The present application relates to a technology field of battery, exemplarily, relates to a battery and a battery system.
In order to protect safety of a battery, the battery cannot be over-charged or over-discharged during use, and there is a need to monitor internal states of various physical environments of the battery. In related arts, a data processing chip is usually used to receive data collected by sensors such as temperature and pressure, and the received data is processed and transmitted to an external terminal to monitor the internal state of the battery.
Among them, the data processing chip of the battery is connected in series with a cell, and the cell supplies power to the data processing chip.
However, when the data processing chip is damaged, positive and negative poles of the cell will be directly connected, resulting in a short circuit.
In a first aspect, the present application provides a battery, the battery cover includes:
In a second aspect, the present application also provides a battery system including a battery, the battery includes:
Beneficial effects: in the battery provided by the present application, the charging protector is electrically connected to the cell and the data processing chip, when power of the data processing chip is insufficient, the charging protector can charge the data processing chip through the cell, so that the data processing chip works stably. At the same time, it can also avoid over-charging caused by the cell charging the data processing chip all the time or short circuit of the cell due to damage of the data processing chip, thus prolonging service life of the cell.
In the battery system provided by the present application, the charging protector of the battery is electrically connected to the cell and the data processing chip. When the power of the data processing chip is insufficient, the charging protector can charge the data processing chip through the cell, so that the data processing chip works stably. At the same time, it can avoid over-charging caused by the cell charging the data processing chip all the time or short circuit of the cell due to damage of the data processing chip, thus prolonging the service life of the cell, and being beneficial to improving service life and working stability of the battery system.
Description of reference numbers: battery 100; cell 10; cell body 1010; first pole 11; second pole 12; data processing chip 20; charging protector 30; switching transistor 31; protecting chip 32; pressure sensor 40; temperature sensor 50; external module 1001; first pole lug 1002; second pole lug 1003; positive electrode connecting tab 1005; first groove 1101; negative electrode connecting tab 1004; top covering assembly 2001; connecting wire assembly 200; first connecting line 2003; second connecting line 2004; adapter clamp assembly 2000; first adapter clamp 2002; first supporting arm 501; first conductive wire hole 504; first clamping arm 502; second adapter clamp 2005.
In order to protect safety of the battery, the battery cannot be over-charged or over-discharged during use, and there is also a need to monitor internal states of various physical environments of the battery. In a related art, a data processing chip is usually used to receive data collected by sensors such as temperature data and pressure data, and the data received by the data processing chip is processed and transmitted to an external terminal to monitor the internal states of the battery.
At present, there are two setting ways to the data processing chip and the cell. A first setting way is that the data processing chip is connected in series with the cell, and the cell supplies power to the data processing chip. However, in this way, when the data processing chip is damaged, a positive pole and a negative pole of the cell will be directly connected, resulting in a short circuit. A second setting way is that the cell does not power for the data processing chip, but in this way, when the data processing chip is exhausted, it cannot be effectively charged, resulting in the data processing chip being unable to monitor the stability of the internal states of the battery.
The present application provides a battery. The battery may be a lithium battery. Referring to
a cell 10, a data processing chip 20, and a charging protector 30. The charging protector 30 is electrically connected to the cell 10 and the data processing chip 20. The charging protector 30 is arranged to control an on or off of a circuit connected the cell 10 and the data processing chip 20.
When voltage of the data processing chip 20 is greater than a preset value, the circuit connected to the data processing chip 20 and the cell 10 in the charging protector 30 is disconnected. When the voltage of the data processing chip 20 is less than the preset value, the circuit connected to the data processing chip 20 and the cell 10 in the charging protector 30 is turned on.
In the present application, the charging protector 30 is electrically connected to the cell 10 and the data processing chip 20. When the power of the data processing chip 20 is sufficient, the voltage of the data processing chip 20 is greater than the preset value, and the circuit connected to the data processing chip 20 and the cell 10 in the charging protector 30 is disconnected. And at this time, the cell 10 stops charging the data processing chip 20. When the power of the data processing chip 20 is insufficient, the voltage of the data processing chip 20 is less than the preset value, and the circuit connected to the data processing chip 20 and the cell 10 in the charging protector 30 is turned on. And at this time, the cell 10 starts to charge the data processing chip 20. By providing the charging protector 30, the cell 10 can avoid over-charging caused by the cell 10 constantly charging the data processing chip 20 or short circuit of the cell 10 due to damage to the data processing chip 20, and the service life of the cell 10 can be prolonged. At the same time, when the power of the data processing chip 20 is insufficient, the charging protector 30 can charge the data processing chip 20 through the cell 10, which improves the technical problem that the data processing chip 20 cannot stably monitor the internal states of the battery 100 due to the power insufficient.
In a process of charging the data processing chip 20, a voltage preset value of the data processing chip 20 is set with reference to a rated voltage and a full charge voltage of the data processing chip 20. For example, the rated voltage of the data processing chip 20 is 3.7 V, an over-charge protecting voltage is 4.2±0.05 V, and the voltage preset value of the data processing chip 20 is within a range of 3.7 V to 4.25V.
In a process of discharging the data processing chip 20, the voltage preset value of the data processing chip 20 is set with reference to the rated discharge voltage of the data processing chip 20. For example, the over-discharge protection voltage of the data processing chip 20 is 2.3 V, and the voltage preset value of the data processing chip 20 is within a range of 2.3 V to 2.4V.
The data processing chip 20 is configured to receive data collected by other sensors inside the cell 10 and transmit a collected data to an external terminal.
The battery 100 further includes a display panel. The display panel is provided outside the battery 100. the data processing chip 20 is electrically or wirelessly connected to the display panel. The data processing chip 20 transmits a collected data to the display panel. The display panel receives the data collected by the data processing chip 20 and displays it on the screen, so as to intuitively monitor internal pressure and temperature information of the battery 100, and improve safety performance of the battery 100.
With continued reference to
In some possible embodiments, the first pole 11 is one of a positive electrode and a negative electrode of the cell 10, and the second pole 12 is the other of the positive electrode and the negative electrode of the cell 10. When the second data pin of the data processing chip 20 is electrically connected to the charging protector 30, the first data pin of the data processing chip 20 is electrically connected to one of the positive electrode and the negative electrode of the cell 10. When a voltage of the data processing chip 20 is greater than a preset value, the circuit connected to the second pole 12 and the second data pin in the charging protector 30 is disconnected. When the voltage of the data processing chip 20 is less than the preset value, the circuit connected to the second pole 12 and the second data pin in the charge protector 30 is turned on. When the power of the data processing chip 20 is insufficient, the charging protector 30 can charge the data processing chip 20 through the cell 10, thereby improving the technical problem that the data processing chip 20 cannot stably monitor the internal state of the battery 100 due to the power insufficient.
Referring to
a switching transistor 31 electrically connected to the second pole 12 and the second data pin; and a protecting chip 32 electrically connected to the data processing chip 20.
When the voltage of the data processing chip 20 is greater than the preset value, the switching transistor 31 is turned off. When the voltage of the data processing chip 20 is less than the preset value, the switching transistor 31 is in an open state.
In some possible embodiments, the switching transistor 31 is one of a field effect transistor (FET), a junction field effect transistor (JFET), an N-channel JFET, a P-channel JFET, a metal oxide semiconductor field effect transistor (MOSFET), an N-channel MOSFET, a P-channel MOSFET, a small signal transistor, a small switching transistor 31, a power transistor, a high frequency transistor, a phototransistor, and a single junction transistor (UJT). The protecting chip 32 is set to monitor an instantaneous value of the voltage of the data processing chip 20. The switching transistor 31 is in an off state when the instantaneous value of the voltage of the data processing chip 20 is greater than the preset value. The switching transistor 31is in an on state when the instantaneous value of the voltage of the data processing chip 20 is less than the preset value.
The protecting chip 32 is electrically connected to the switching transistor 31 and is arranged to control the switching transistor 31 to be turned on or turned off. Alternatively, the protecting chip 32 is a wireless transceiver chip and controls the switching transistor 31 to be turned on or turned off by wireless transceiver.
Referring to
The protecting chip 32 includes a first protecting pin, a second protecting pin, and a third protecting pin.
The second pole 12 is electrically connected to one of the source and the drain. The second data pin is electrically connected to the other of the source and the drain.
The first protecting pin is electrically connected to the first data pin. The second protecting pin is electrically connected to the second data pin. The third protecting pin is electrically connected to the gate.
In some possible embodiments, the switching transistor 31 is an NMOS transistor. A model number of the protecting chip 32 is DW01. The second pole 12 is electrically connected to one of a source and a drain of the NMOS transistor. The second data pin is electrically connected to the other of the source and the drain of the NMOS transistor. The first protecting pin and the second protecting pin of the protecting chip 32 are electrically connected to the first data pin and the second data pin of the data processing chip 20, respectively. The protecting chip 32 is set to monitor the voltage instantaneous value of the data processing chip 20. The third protecting pin of the protecting chip 32 is electrically connected to the gate of the NMOS transistor. The protecting chip 32 is configured to control the NMOS transistor to be turned on or off.
At this time, the NMOS transistor is connected in series between the cell 10 and the data processing chip 20. When the voltage of the data processing chip 20 is less than a preset value, the NMOS transistor is in an open state, the circuit between the cell 10 and the data processing chip 20 is turned on, and the cell 10 charges the data processing chip 20. When the voltage of the data processing chip 20 is greater than the preset value, the NMOS transistor is in the off state, the circuit between the cell 10 and the data processing chip 20 is disconnected, and the cell 10 stops charging the data processing chip 20.
Referring to
In some possible embodiments, the switching transistor 31 is an NMOS transistor. A model number of the protecting chip 32 is DW01. The second pole 12 is electrically connected to one of the source and the drain of the NMOS transistor. The first guard pin is electrically connected to the other of the source and the drain of the NMOS transistor. The second protecting pin and the third protecting pin of the protecting chip 32 are electrically connected to the second data pin and the first data pin of the data processing chip 20, respectively. The protecting chip 32 is set to monitor the voltage instantaneous value of the data processing chip 20. The fourth protecting pin of the protecting chip 32 is electrically connected to the gate of the NMOS transistor, and is configured to control the NMOS transistor to be turned on or turned off.
At this time, the NMOS transistor and the protecting chip 32 are connected in series between the cell 10 and the data processing chip 20. When the voltage of the data processing chip 20 is less than the preset value, the NMOS transistor is in an open state, the circuit between the cell 10 and the data processing chip 20 is turned on, and the cell 10 charges the data processing chip 20. When the voltage of the data processing chip 20 is greater than the preset value, the NMOS transistor is in the off state, the circuit between the cell 10 and the data processing chip 20 is disconnected, and the cell 10 stops charging the data processing chip 20.
Referring to
In some possible embodiments, the first pole 11, the second pole 12, and the data processing chip 20 are all provided at the first end of the cell 10, which facilitates internal wirings of the battery 100 and improves production efficiency of the battery 100.
Referring to
In some possible embodiments, the pressure sensor 40 is one of a strain-gauge pressure sensor, a piezoresistive pressure sensor, a capacitive pressure sensor, and a piezoelectric pressure sensor. When the pressure sensor 40 is a strain-gauge pressure sensor, the strain-gauge pressure sensor includes an elastomer and a strain gauge. The elastomer is arranged at a position where the outer surface of the cell 10 is expanded and deformed, and the strain gauge is attached to the elastomer. When the elastomer is deformed due to expansion of the cell 10, the strain gauge converts the deformation of the elastomer into a resistance signal, and the data processing chip 20 is electrically connected to the strain gauge, and the data processing chip 20 acquires deformation of the cell 10.
Referring to
In some possible embodiments, types of the cell 10 include a wound cell and a laminated cell. When the cell 10 is a wound cell, the pressure sensor 40 is provided on a side of the wound cell. When the cell 10 is a laminated cell, the pressure sensor 40 is provided on a side surface in a lamination direction of the laminated cell.
Referring to
In some possible embodiments, the temperature sensor 50 may be one of a thermistor, a thermocouple, a resistance temperature detector (RTD), an analog thermometer chip, a digital thermometer chip, a silicon diode, an infrared radiator. When the pressure sensor 40 is a thermistor, the thermistor is provided on the outer surface of the cell 10, and the data processing chip 20 acquires a surface temperature of the cell 10 by collecting a resistance data of the thermistor, and the temperature sensor 50 improves safety performance of the battery 100.
Referring to
In some possible embodiments, the temperature sensor 50 is provided on the second end surface, and is configured to monitor an instantaneous temperature value of a portion of the cell 10 away from the first end face to ensure the safety performance of the battery 100.
Referring to
With continued reference to
The cell 10 further includes a cell body 1010, the first pole 11 and the second pole 12. The first pole 11 and the second pole 12 are located on the cell body 1010. The first pole 11 is connected to the positive electrode connecting tab 1005. The second pole 12 is connected to the negative electrode connecting tab 1004.
The data processing chip 20 includes a voltage conversion component that can convert a voltage transmitted by the cell 10 into a voltage required for internal power supply of the data processing chip 20.
In some possible embodiments, the positive electrode connecting tab 1005 and the negative electrode connecting tab 1004 are positioned between the cell body 1010 and the top cover assembly 2001.
In some possible embodiments, as shown in
In some possible embodiments, as shown in
In some possible embodiments, as shown in
In the present application, the positive electrode connecting tab 1005 and the negative electrode connecting tab 1004 of the cell 10 are respectively connected to the data processing chip 20, so that the data processing chip 20 is powered by electric energy of the cell 10 itself, thereby solving a problem of unstable power supply caused by wireless charging and a problem of space occupation caused by power supply using built-in battery.
As shown in
In some possible embodiments, as shown in
The adapter clamp assembly 2000 includes a first adapter clamp 2002 and a second adapter clamp 2005. The first adapter clamp 2002 is connected to the positive electrode connecting tab 1005. The second adapter clamp 2005 is connected to the negative electrode connecting tab 1004. Configuration of the second adapter clamp 2005 may or may not be consistent with configuration of the first adapter clamp 2002. The configuration of the second adapter clamp 2005 may be consistent with the configuration of the first adapter clamp 2002.
The connecting wire assembly 200 includes a first connecting wire 2003 and a second connecting wire 2004. One end of the first connecting wire 2003 is connected to the first adapter clamp 2002. The other end of the first connecting wire 2003 (i.e., one end away from the first adapter clamp 2002) is connected to the data processing chip 20. One end of the second connecting wire 2004 is connected to the second adapter clamp 2005, and the other end of the second connecting wire 2004 (i.e., one end away from the second adapter clamp 2005) is connected to the data processing chip 20.
The other end of the first connecting wire 2003 may be directly connected to the data processing chip 20 or may be connected to the charging protector 30 or other devices, thereby indirectly connecting the data processing chip 20 through the charging protector 30 or other devices. Similarly, the other end of the second connecting wire 2004 may be directly connected to the data processing chip 20, or may be connected to the charging protector 30 or other devices, thereby being indirectly connected to the data processing chip 20 through the charging protector 30 or other devices.
In some possible embodiments, materials of the first adapter clamp 2002 and the first connecting wire 2003 may be conductive materials such as aluminum. The first connecting wire 2003 may be wrapped with an insulating layer. A material of the second connecting wire 2004 may be a conductive material such as copper. The material of the second connecting wire 2004 may be wrapped with an insulating layer. A material of the second adapter clamp 2005 may be a conductive material such as copper.
In some possible embodiments, as shown in
Similarly, the second adapter clamp 2005 may include a second supporting arm and two second clamping arms respectively connected to the second supporting arm. Positions of the two second clamping arms are opposite to each other. One end of the two second clamping arms away from the second supporting arm is close to each other. The two second clamping arms are clamped on both sides of the negative electrode connecting tab 1004.
By clamping the positive electrode connecting tab 1005 by the two first clamping arms 502 of the first adapter clamp 2002 and clamping the negative electrode connecting tab 1004 by the two second clamping arms of the second adapter clamp 2005, frictional forces between the first adapter clamp 2002 and the positive electrode connecting tab 1005, and between the second adapter clamp 2005 and the negative electrode connecting tab 1004 are increased. Falling off phenomenon between the first adapter clamp 2002 and the positive electrode connecting tab 1005, and between the second adapter clamp 2005 and the negative electrode connecting tab 1004 is less likely to occur when the battery 100 is shaken.
In some possible embodiments, as shown in
As shown in
It should be noted that the first conductive wire hole 504 and the second conductive wire hole may be provided at other positions on the first supporting arm 501 and the second supporting arm, respectively, according to specific circumstances. The above-described examples are only for better description of the present aspect, and are not limited to the present aspect.
In some possible embodiments, as shown in
Extension lines of the two first clamping arms 502 of the first adapter clamp 2002 and the two second clamping arm of the second adapter clamp 2005 are intersected. An angle formed by the intersection is an acute angle, so that the first adapter clamp 2002 and the second adapter clamp 2005 can be clamped on the positive electrode connecting tab 1005 and the negative electrode connecting tab 1004, respectively, without slipping phenomenon.
In some possible embodiments, as shown in
In some possible embodiments, as shown in
By adding two first crimping portions 503 between the two first clamping arms 502 of the first adapter clamp 2002 and adding the two second crimping portions between the two second clamping arms of the second adapter clamp 2005, stability of a connection of the first adapter clamp 2002 to the positive electrode connecting tab 1005 and stability of a connection of the second adapter clamp 2005 to the negative electrode connecting tab 1004 are enhanced.
In some possible embodiments, as shown in
By adding two first crimping portions 503 between the two first clamping arms 502 of the first adapter clamp 2002 and adding two second crimping portions between the two second clamping arms of the second adapter clamp 2005, one of the two first crimping portions 503 is crimped toward the other of the two first crimping portions 503 (i.e. bent inward), and one of the second crimping portions is crimped toward the other of the two second crimping portions, which can avoid the problem that related insulating tapes inside the battery core 10 are broken and failed due to a sharp end of the second clamping arm 502 when the two first crimping portions 503 and the two second crimping portions of the second clamping arm 502 are clamped on the positive electrode connecting tab 1005 and the negative electrode connecting tab 1004, respectively.
In one embodiment, as shown in
The embodiments of the present application provides a battery, in which the positive electrode and the negative electrode inside the cell 10 are respectively connected to the data processing chip, so that the data processing chip can be supplied with power through the computer of the cell 10 itself, effectively solving the problem of unstable power supply caused by using wireless power supply, and simultaneously solving the problem of space occupation caused by using built-in battery power supply.
Embodiments of the present application also provide a battery system comprising the battery described above. This battery system has all the advantages of the batteries described above and will not be described herein.
Number | Date | Country | Kind |
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202322015107.0 | Jul 2023 | CN | national |
202323185051.X | Nov 2023 | CN | national |
PCT/CN2024/104176 | Jul 2024 | WO | international |
This application is a continuation of International Patent Application No. PCT/CN2024/104176, filed on Jul. 8, 2024, which claims priority to Chinese Patent Application Serial No. 202322015107.0, titled with “LITHIUM BATTERY”, and filed to CNIPA on Jul. 28, 2023 and 202323185051.X, titled with “BATTERY AND BATTERY SYSTEM”, and filed to CNIPA on Nov. 23, 2023. The contents of the aforementioned applications are incorporated herein by reference.
Number | Date | Country | |
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Parent | PCT/CN2024/104176 | Jul 2024 | WO |
Child | 19023298 | US |