CHARGING AND HEATING APPARATUS AND METHOD AND APPARATUS FOR CONTROLLING SAME

Abstract

A charging and heating apparatus includes a power unit configured to be connected to a battery to be charged/discharged and perform voltage conversion on a received voltage and current and output a converted voltage to the battery, a unidirectional/bidirectional conversion unit connected to the power unit and configured to output a bidirectional alternating current or a preset current to the power unit, and a control unit connected to the unidirectional/bidirectional conversion unit and configured to, in response to the battery being in a heating mode, control the unidirectional/bidirectional conversion unit to output the bidirectional alternating current to the corresponding power unit, such that the battery self-heats under excitation of the bidirectional alternating current, and in response to the battery being in a charge/discharge mode, control the unidirectional/bidirectional conversion unit to output the preset current to the power unit, such that the battery is charged/discharged.

Description

Claims

1. A charging and heating apparatus, comprising: a power unit configured to be connected to a battery to be charged/discharged and perform voltage conversion on a received voltage and current and output a converted voltage to the battery;a unidirectional/bidirectional conversion unit connected to the power unit and configured to output a bidirectional alternating current or a preset current to the power unit; anda control unit connected to the unidirectional/bidirectional conversion unit and configured to: in response to the battery being in a heating mode, control the unidirectional/bidirectional conversion unit to output the bidirectional alternating current to the power unit, such that the battery self-heats under excitation of the bidirectional alternating current; andin response to the battery being in a charge/discharge mode, control the unidirectional/bidirectional conversion unit to output the preset current to the power unit, such that the battery is charged/discharged.

2. The charging and heating apparatus according to claim 1, wherein: the control unit is further configured to be communicatively connected to a battery management system of the battery, to respond to a request from the battery management system for the heating mode or the charge/discharge mode; andthe battery management system sets a mode of the battery as the heating mode or the charge/discharge mode based on at least one of a real-time temperature or a state of X (SOX) parameter of the battery.

3. The charging and heating apparatus according to claim 2, wherein the control unit is configured to, in response to the real-time temperature of the battery being lower than a preset value and the SOX parameter of the battery meeting a preset condition, control the battery to enter the heating mode.

4. The charging and heating apparatus according to claim 2, wherein the control unit is configured to, in response to the real-time temperature of the battery being greater than or equal to a preset value and the SOX parameter of the battery meeting a preset condition, control the battery to enter the charge/discharge mode.

5. The charging and heating apparatus according to claim 2, wherein the control unit is further configured to: receive a state parameter, collected by the battery management system, of the battery in the charge/discharge mode, the state parameter indicating that a charge/discharge rate of the battery reaches a preset threshold; andupload the state parameter and identification information of the battery to a cloud.

6. The charging and heating apparatus according to claim 2, wherein the control unit is further configured to upload the SOX parameter, a real-time voltage, and the real-time temperature of the battery to a cloud, such that the cloud determines, based on the SOX parameter, the real-time voltage, the real-time temperature, and historical charge/discharge record information, whether the battery meets a heating condition, and, in response to the battery meeting the heating condition, control the unidirectional/bidirectional conversion unit to output the bidirectional alternating current to the power unit.

7. The charging and heating apparatus according to claim 2, wherein the control unit is further configured to upload the SOX parameter, a real-time voltage, and the real-time temperature of the battery to a cloud, such that the cloud determines, based on the SOX parameter, the real-time voltage, the real-time temperature, and historical charge/discharge record information, whether the battery meets a charge/discharge condition, and, in response to the battery meeting the charge/discharge condition, control the unidirectional/bidirectional conversion unit to output the preset current to the power unit.

8. The charging and heating apparatus according to claim 2, further comprising: a display panel connected to the control unit and configured to display the real-time temperature and a state parameter of the battery.

9. The charging and heating apparatus according to claim 1, wherein in one period of the bidirectional alternating current, a duration during which a current direction of the bidirectional alternating current is from the unidirectional/bidirectional conversion unit to the power unit is greater than or equal to a duration during which the current direction is from the power unit to the unidirectional/bidirectional conversion unit.

10. The charging and heating apparatus according to claim 1, wherein in one period of the bidirectional alternating current, a duration during which a current direction of the bidirectional alternating current is from the unidirectional/bidirectional conversion unit to the power unit is greater than or less than a duration during which the current direction is from the power unit to the unidirectional/bidirectional conversion unit.

11. The charging and heating apparatus according to claim 1, wherein: the bidirectional alternating current is a first bidirectional alternating current; andthe preset current comprises a plurality of segments of second bidirectional alternating currents and a plurality of segments of unidirectional direct currents, and the plurality of segments of second bidirectional alternating currents and the plurality of segments of unidirectional direct currents are distributed alternately at intervals.

12. The charging and heating apparatus according to claim 1, further comprising: a first switch unit connected to the power unit and the control unit, the first switch unit being configured to be switched on or off under control of a battery management system; anda second switch unit connecting the power unit to the unidirectional/bidirectional conversion unit;wherein the control unit is connected to the second switch unit, to connect or disconnect the unidirectional/bidirectional conversion unit to or from the power unit.

13. A method for controlling a charging and heating apparatus, comprising: obtaining a state parameter of a battery read by a battery management system;outputting a bidirectional alternating current to the battery in response to the state parameter being within a first preset range, such that the battery self-heats under driving of the bidirectional alternating current; andoutputting a preset current to the battery in response to the state parameter being within a second preset range, such that the battery is charged.

14. The method for controlling the charging and heating apparatus according to claim 13, wherein the state parameter comprises at least one of a real-time temperature or a state of X (SOX) parameter of the battery.

15. The method for controlling the charging and heating apparatus according to claim 14, wherein outputting the bidirectional alternating current to the battery in response to the state parameter being within the first preset range comprises: outputting the bidirectional alternating current to the battery in response to the real-time temperature of the battery being lower than a preset value and the SOX parameter of the battery meeting a preset condition.

16. The method for controlling the charging and heating apparatus according to claim 14, wherein outputting the preset current to the battery in response to the state parameter being within the second preset range comprises: outputting the preset current to the battery in response to the real-time temperature of the battery being greater than or equal to a preset value and the SOX parameter of the battery meeting a preset condition.

17. The method for controlling the charging and heating apparatus according to claim 13, wherein: the bidirectional alternating current is a first bidirectional alternating current; andthe preset current comprises: a unidirectional direct current; ora plurality of segments of second bidirectional alternating currents and a plurality of segments of unidirectional direct currents, the plurality of segments of second bidirectional alternating currents and the plurality of segments of unidirectional direct currents being distributed alternately at intervals.

18. The method for controlling the charging and heating apparatus according to claim 14, wherein outputting the bidirectional alternating current to the battery in response to the state parameter being within the first preset range comprises: uploading the SOX parameter, a real-time voltage, and the real-time temperature of the battery to a cloud, such that the cloud determines, based on the SOX parameter, the real-time temperature, and historical charge record information, whether the battery meets a heating condition, and under a condition that the battery meets the heating condition, outputting the first bidirectional alternating current to the battery to heat the battery.

19. The method for controlling the charging and heating apparatus according to claim 14, wherein the outputting a preset current to the battery under a condition that the state parameter is within a second preset range, such that the battery is charged comprises: uploading the SOX parameter, a real-time voltage, and the real-time temperature of the battery to a cloud, such that the cloud determines, based on the SOX parameter, the real-time voltage, the real-time temperature, and historical charge record information, whether the battery meets a charge/discharge condition; andin response to the battery meeting the charge/discharge condition, outputting the preset current to the battery to charge the battery.