CN215300199U - Battery pack and vehicle - Google Patents
Battery pack and vehicle Download PDFInfo
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- CN215300199U CN215300199U CN202121036065.3U CN202121036065U CN215300199U CN 215300199 U CN215300199 U CN 215300199U CN 202121036065 U CN202121036065 U CN 202121036065U CN 215300199 U CN215300199 U CN 215300199U
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Abstract
A battery pack and a vehicle, wherein the battery pack includes: the first circuit loop is provided with a direct current interface, a first switching device and a battery pack; the second circuit loop is provided with the direct current interface, a second switching device, a boosting module and the battery pack; and the battery management system is connected with the first circuit loop and the second circuit loop and used for acquiring the charging voltage at the direct current interface and selectively switching the first switching device and the second switching device according to the charging voltage. The boost module is used for boosting the charging voltage of the direct current interface to the rated voltage of the battery pack; the battery pack is also used for being connected with the output end of the boosting module when the charging voltage of the direct current interface is the rated voltage of the battery pack. The battery package is through the break-make of first switching element and second switching element to compatible different charging voltage's the electric pile that fills, the user need not to select the electric pile that fills that corresponds rated voltage when charging, and it is convenient to charge.
Description
Technical Field
The disclosure belongs to the technical field of vehicles, and particularly relates to a battery pack and a vehicle.
Background
At the moment of rapid popularization of new energy vehicles, endurance mileage is always the most concerned problem for the electric vehicle industry and consumers. Since power battery technology has not yet revolutionized breakthroughs, progress to address range anxiety by increasing battery capacity has been slow. At present, both domestic and foreign vehicle enterprises and suppliers are actively researching and developing super fast charging technology. In terms of physics, power is voltage and current, so a high-power charging system needs to pay attention to two layers of charging piles and vehicles, and pay attention to voltage and current problems.
At present, voltage platforms of common domestic electric vehicles are mostly about 400V, namely, the working voltages of related systems such as motors, batteries and electric control systems are in the range. Therefore, the high-power quick charging of 350kW is realized under a 400V voltage platform, the current in the vehicle reaches 350kW/400V 875A, and the current which can be borne by the internal line of the electric vehicle is about 250A at present. The large current can be matched with the thick cable, and the thick cable can generate great heat, so that the efficiency is low, and the space arrangement in the vehicle is influenced. Therefore, it is better to achieve quick charging by raising the charging voltage and the rated voltage of the battery pack, but some charging voltages in the existing charging pile are around 400V, and some charging voltages have already been raised to a high voltage. This results in that the battery pack after the rated voltage is increased cannot be charged in all the charging piles, and the use by the user is inconvenient.
SUMMERY OF THE UTILITY MODEL
Objects of the disclosure
An object of the present disclosure is to provide a battery pack and a vehicle that can solve the above-described problems.
(II) technical scheme
In order to solve the above problem, a first aspect of the present disclosure provides a battery pack, in which a first circuit loop is provided with a dc interface, a first switching device, and a battery pack; the second circuit loop is provided with the direct current interface, a second switching device, a boosting module and the battery pack; and the battery management system is connected with the first circuit loop and the second circuit loop and used for acquiring the charging voltage at the direct current interface and selectively switching the first switching device and the second switching device according to the charging voltage.
Optionally, the battery pack further includes: the third circuit loop is provided with the boosting module, a third switching device and the battery pack, the third circuit loop further comprises a first parallel circuit which is connected with the third switching device in parallel, and a pre-charging resistor and a fourth switching device are arranged on the first parallel circuit.
Optionally, the third circuit loop further includes a second parallel circuit connected in parallel with the battery pack, an output interface is arranged on the second parallel circuit, and the output interface is connected with the power distribution unit.
Optionally, the battery pack further includes: a fourth circuit loop comprising: the battery pack comprises an alternating current interface, a vehicle-mounted charger and the battery pack; and the vehicle-mounted charger is used for converting the alternating current of the alternating current interface into direct current, boosting the direct current to the rated voltage of the battery pack, and outputting the direct current to charge the battery pack.
Optionally, the battery pack further includes: the vehicle-mounted charger, the third switching device and the battery pack are arranged on the fifth circuit loop, the fifth circuit loop further comprises a first parallel circuit which is connected with the third switching device in parallel, and the first parallel circuit is provided with a pre-charging resistor and a fourth switching device.
Optionally, the fifth circuit loop further includes a second parallel circuit connected in parallel with the battery pack, an output interface is arranged on the second parallel circuit, and the output interface is connected to the power distribution unit.
Optionally, the first switching device comprises a first relay and a second relay; one end of the first relay is connected with the positive electrode of the direct current interface, and the other end of the first relay is connected with the positive electrode of the battery pack; one end of the second relay is connected with the negative electrode of the direct current interface, and the other end of the second relay is connected with the negative electrode of the battery pack.
Optionally, the second switching device comprises a third relay and a fourth relay; one end of the third relay is connected with the positive electrode of the direct current interface, and the other end of the third relay is used for being connected with the boosting module; one end of the fourth relay is connected with the negative electrode of the direct current interface, and the other end of the fourth relay is used for being connected with the boosting module.
Optionally, the third switching device is a seventh relay; the fourth switching device is a fifth relay; one end of the pre-charging resistor is connected with one end of the seventh relay, and the other end of the pre-charging resistor is connected with one end of the fifth relay; the other end of the fifth relay is connected with the other end of the seventh relay.
A second aspect of the present disclosure provides a vehicle including the battery pack as provided in the first aspect of the present disclosure.
According to the charging method and the charging device, the first switch device is conducted when the charging voltage of the direct current interface is the rated voltage of the battery pack to directly charge the battery pack, the second switch device is conducted when the charging voltage of the direct current interface is smaller than the rated voltage of the battery pack, the charging voltage is sent to the boosting module, and the charging voltage is boosted to the rated voltage to charge the battery pack.
(III) advantageous effects
The technical scheme of the disclosure has the following beneficial technical effects:
this disclosed battery package is through the break-make of first switching element and second switching element to compatible different charging voltage's the electric pile that fills, the user need not to select the electric pile that fills that corresponds rated voltage when charging, and it is convenient to charge.
Drawings
Fig. 1 is a schematic view of the overall structure of a battery pack of the present disclosure;
fig. 2 is a schematic diagram of a first circuit loop structure of a battery pack of the present disclosure;
fig. 3 is a schematic diagram of a second circuit loop structure of the battery pack of the present disclosure;
fig. 4 is a schematic diagram of a third circuit loop structure of the battery pack of the present disclosure;
fig. 5 is a schematic diagram of a fourth circuit loop structure of the battery pack of the present disclosure;
fig. 6 is a schematic diagram of a fifth circuit loop structure of the battery pack of the present disclosure;
fig. 7 is a schematic diagram of a sixth circuit loop structure of the battery pack of the present disclosure;
fig. 8 is a charging flow diagram of the battery pack of the present disclosure.
Reference numerals:
1: a battery pack; 2: a direct current interface; 3: a first connection interface; 4: a second connection interface; 5: pre-charging a resistor; 6: an alternating current interface; 7: a vehicle-mounted charger; 8: an output interface;
101: a first relay; 102: a second relay; 103: a third relay; 104: a fourth relay; 105: a fifth relay; 106: a sixth relay; 107: a seventh relay; 108: a fuse;
100: a boost module; 200: a battery management system; 300: a power distribution unit.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is described in further detail below with reference to the accompanying drawings in conjunction with the specific disclosure. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.
A schematic diagram of a layer structure according to an embodiment of the present disclosure is shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity. The shapes of various regions, layers, and relative sizes and positional relationships therebetween shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, as actually required.
In the description of the present disclosure, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 3, the present disclosure provides a battery pack including: a first circuit loop, on which a direct current interface 2, a first switching device and a battery pack 1 are arranged; the second circuit loop is provided with a direct current interface 2, a second switching device, a boosting module 100 and a battery pack 1; the battery management system 200 is connected to the first circuit loop and the second circuit loop, and configured to obtain a charging voltage at the dc interface 2, and selectively open and close the first switching device and the second switching device according to the charging voltage. Specifically, a dc interface 2 for charging the battery pack 1 by a dc power supply; the first switching device is arranged on a line connecting the direct current interface 2 and the battery pack 1 and is used for conducting when the charging voltage of the direct current interface 2 is the rated voltage of the battery pack 1; one end of the second switching device is connected with the direct current interface 2, the other end of the second switching device is used for being connected with the input end of the boosting module 100, and the second switching device is conducted when the charging voltage of the direct current interface 2 is smaller than the rated voltage of the battery pack 1; the boosting module 100 is configured to boost the charging voltage of the dc interface 2 to a rated voltage of the battery pack 1. The present disclosure directly charges the battery pack 1 by the first switching device being turned on when the charging voltage of the dc interface 2 is the rated voltage of the battery pack 1, and is turned on when the charging voltage of the dc interface 2 is less than the rated voltage of the battery pack 1 by the second switching device, and charges the battery pack 1 by boosting the charging voltage to the rated voltage by the boosting module 100. The charging pile is compatible with different charging voltages through the on-off of the first switch device and the second switch device, a user does not need to select the charging pile corresponding to the rated voltage when charging, and charging is convenient. Wherein, the rated voltage is generally not less than 800V, and can be selected from 800V to 1000V. In the present embodiment, the battery management system 200 is also a BMS.
In an alternative embodiment, the boost module 100 is a dc transformer. In addition, the boosting module 100 may be disposed inside or outside the battery pack case as needed, particularly in view of the spatial arrangement inside the battery pack.
Referring to fig. 3, in an alternative embodiment, the second circuit loop further includes: a first connection interface 3, one end of which is connected to the second switching device and the other end of which is used for being connected to the input end of the boost module 100; and a second connection interface 4, one end of which is connected to the battery pack 1 and the other end of which is used for being connected to the output end of the boosting module 100. The first connection interface 3 and the second connection interface 4 are used when the boost module 100 is disposed outside the battery pack and the battery pack is connected to the boost module 100.
Specifically, the first switching device includes a first relay 101 and a second relay 102, one end of the first relay 101 is connected to the positive electrode of the dc interface 2, and the other end is connected to the positive electrode of the battery pack 1; one end of the second relay 102 is connected to the negative electrode of the dc interface 2, and the other end is connected to the negative electrode of the battery pack 1. The second switching device comprises a third relay 103 and a fourth relay 104, one end of the third relay 103 is connected with the positive electrode of the direct current interface 2, and the other end of the third relay is connected with the positive electrode of the first connecting interface 3; one end of the fourth relay 104 is connected to the negative electrode of the dc interface 2, and the other end is connected to the negative electrode of the first connection interface 3. Wherein, the first switching device is turned on means that the first relay 101 and the second relay 102 are both closed. The first switching device is turned off means that both the first relay 101 and the second relay 102 are turned off or turned off. The second switching device being on means that the third relay 103 and the fourth relay 104 are both closed. The second switching device is turned off means that both the third relay 103 and the fourth relay 104 are turned off or turned off. Optionally, the second circuit loop further comprises: a third switching device and a fifth switching device; the third switching device is a seventh relay 107, one end of the seventh relay 107 is connected with the positive electrode of the battery pack 1, and the other end is connected with the positive electrode of the second connection interface 4. The fifth switching device is a sixth relay 106, one end of the sixth relay 106 is connected to the negative electrode of the battery pack 1, and the other end is connected to the negative electrode of the second connection interface 4.
Referring to fig. 4, in an alternative embodiment, the battery pack further includes: the third circuit loop is provided with the boosting module 100, a third switching device and a battery pack, and further comprises a first parallel circuit connected with the third switching device in parallel, and the first parallel circuit is provided with a pre-charging resistor and a fourth switching device. The third circuit loop also comprises a second parallel circuit which is connected with the battery pack 1 in parallel, an output interface is arranged on the second parallel circuit, and the output interface is connected with the power distribution unit. Wherein, one end of the pre-charging resistor 5 is connected with the battery pack 1; and one end of the fourth switching device is connected with the other end of the pre-charging resistor 5, and the other end of the fourth switching device is connected with the second connection interface 4. The third circuit loop further comprises: and one end of the fifth switching device is connected with the battery pack 1, and the other end of the fifth switching device is connected with one end of the second connection interface 4. Specifically, the fourth switching device is a fifth relay 105, one end of the fifth relay 105 is connected to the pre-charging resistor 5, the other end of the fifth relay is connected to the anode of the second connection interface 4, the fifth switching device is a sixth relay 106, one end of the sixth relay 106 is connected to the cathode of the battery pack 1, and the other end of the sixth relay is connected to the cathode of the second connection interface 4. The pre-charging resistor 5, the fifth relay 105 and the sixth relay 106 are used for pre-charging the vehicle when the vehicle is powered on, the fifth relay 105 and the sixth relay 106 are closed during pre-charging, part of the electricity output by the boosting module 100 is used for powering on the whole vehicle through the output interface 8, and the other part of the electricity is used for charging the battery pack 1 through the pre-charging resistor 5. After the pre-charging is finished, the battery pack 1 is opened 105 and closed 107, and the electricity output by the boosting module 100 is totally introduced into the battery pack 1 to charge the battery pack 1 because the potential of the battery pack 1 is far lower than that of the power distribution unit 300.
Wherein, one end of the third switching device is connected with the battery pack 1, and the other end is connected with one end of the second connection interface 4. The third switching device is a seventh relay 107, one end of the seventh relay 107 is connected with the positive electrode of the battery pack 1, and the other end is connected with the positive electrode of the second connection interface 4. The seventh relay 107 is used when the boost module 100 charges the battery pack 1 after the precharge, specifically, the boost module 100 charges the battery pack 1 through the sixth relay 106 and the seventh relay 107, and when the boost module 100 charges the battery pack 1, the sixth relay 106 and the seventh relay 107 are closed.
Referring to fig. 3 and 4, the second circuit loop and the third circuit loop share a part of the circuit, and the boosting module 100, the sixth relay 106, and the seventh relay 107 are disposed on the shared circuit.
Referring to fig. 5, in an alternative embodiment, the battery pack further includes a fourth circuit loop, which includes: the system comprises an alternating current interface 6, a vehicle-mounted charger 7 and a battery pack 1; and the vehicle-mounted charger 7 is used for converting the alternating current of the alternating current interface 6 into direct current, boosting the direct current to rated voltage and outputting the rated voltage to the battery pack 1 for charging. The alternating current interface 6 can be connected with an alternating current power supply through an alternating current external interface 9 according to needs. Optionally, the fourth circuit loop further includes a sixth relay 106 and a seventh relay 107, one end of the sixth relay 106 is connected to the negative electrode of the battery pack 1, and the other end is connected to the vehicle-mounted charger 7. One end of the seventh relay 107 is connected with the positive electrode of the battery pack 1, and the other end is connected with the vehicle-mounted charger 7. The fourth circuit shares a part of the circuit with the third circuit, and a sixth relay 106 and a seventh relay 107 are provided on the shared circuit.
Referring to fig. 6, in an alternative embodiment, the battery pack further includes a fifth circuit loop on which the vehicle-mounted charger 7, the third switching device and the battery pack 1 are disposed, the fifth circuit loop further includes a first parallel circuit disposed in parallel with the third switching device, and the first parallel circuit is provided with the pre-charging resistor 5 and the fourth switching device. The fifth circuit loop further includes a second parallel circuit connected in parallel with the battery pack 1, and an output interface is provided on the second parallel circuit and connected to the power distribution unit 300. One end of the vehicle-mounted charger 7 is connected with the alternating current interface 6, the other end of the vehicle-mounted charger is connected with the other end of the fourth switching device and the other end of the fifth switching device respectively, and the vehicle-mounted charger 7 is used for converting alternating current of the alternating current interface 6 into direct current, boosting the direct current to rated voltage, and outputting the direct current to the battery pack 1 for charging. The alternating current interface 6 is used for connecting 220V alternating current when the battery pack is charged at home, and when the vehicle-mounted charger 7 is used, the output end of the vehicle-mounted charger is connected with the other end of the fifth relay 105 and the other end of the sixth relay 106 respectively to perform pre-charging. During pre-charging, one part of the electricity output by the vehicle-mounted charger 7 is used for electrifying the whole vehicle through the output interface 8, and the other part of the electricity is used for charging the battery pack 1 through the pre-charging resistor 5. After the pre-charging is finished, the battery pack 1 is opened 105 and closed 107, and at this time, since the potential of the battery pack 1 is far lower than that of the power distribution unit 300, all the electricity output by the vehicle-mounted charger 7 enters the battery pack 1 to charge the battery pack 1. The fifth relay 105 and the sixth relay 106 are closed at the time of precharge. After the pre-charging, the vehicle-mounted charger 7 charges the battery pack 1 through the sixth relay 106 and the seventh relay 107, and when the battery pack is charged, the sixth relay 106 and the seventh relay 107 are closed.
The fifth circuit loop and the third circuit loop share part of the circuit. The sixth relay 106, the seventh relay 107, the first parallel circuit, and the second parallel circuit are provided on a common circuit.
Referring to fig. 7, in an alternative embodiment, the battery pack further includes a sixth circuit loop, where a battery pack 1 and an output interface 8 are disposed on the sixth circuit loop, the battery pack 1 supplies power through the output interface 8, the output interface 8 is connected to a power distribution unit 300, and the battery pack supplies power to a device to be powered through the power distribution unit 300. The sixth circuit loop further comprises: a sixth relay 106 and a seventh relay 107 to control the on/off of the sixth circuit loop.
Referring to fig. 1, in an alternative embodiment, the dc interface 2, the first connection interface 3, the second connection interface 4, the ac interface 6, the output interface 8 and the ac external interface 9 may be connected by a via, a high voltage connector or a liquid cooling connector as required. Specifically, the direct current interface 2 is a liquid cooling connector, and the first connection interface 3, the second connection interface 4, the alternating current interface 6 and the output interface 8 are high-voltage connectors. The alternating current external interface 9 is connected by a via hole.
In an optional embodiment, the copper bar is increased to main heating cable accessible inside in the battery package, reduces the use of electric wire, liquid cooling pencil, improves conversion efficiency. The main heat generating cable is a cable through which a high current flows, for example, a cable near the dc interface 2.
Referring to fig. 1, in an alternative embodiment, the battery pack further includes a fuse 108, and the fuse 108 is disposed on a circuit of the battery pack and functions to fuse itself to cut off current when current in the circuit abnormally rises to a certain height and heat, so as to protect the circuit from safe operation. Specifically, the fuse 108 may be disposed on a line connecting the other end of the first relay 101 to the positive electrode of the battery pack 1, a line connecting the vehicle-mounted charger 7 and the seventh relay 107, and a line connecting the seventh relay 107 to the positive electrode of the battery pack 1, so as to protect the circuit.
Referring to fig. 1 and 8, the present disclosure provides a vehicle including a battery pack provided as described above in the present disclosure.
The vehicle of this disclosure is when charging through filling electric pile, carries out according to following step:
the method includes the steps of performing handshake, wherein during the handshake, the battery management system 200 acquires charging information of the charging pile, such as voltage, whether the charging information is rated voltage of the battery pack 1 or not, if the handshake fails, the handshake is retried, and after 3 times of handshaking, if the handshake fails, the charging is quitted.
If the handshake is successful, the voltage information is acquired through the battery management system 200; if the charging voltage of the direct current interface 2 is the rated voltage, the first switch device is closed to enter the charging process, and the charging process is exited after the charging process is fully performed.
And if the charging voltage of the direct current interface 2 is less than the rated voltage, closing the second switching device, the fourth switching device and the fifth switching device for pre-charging.
And if the pre-charging fails, the charging is quitted.
And if the pre-charging is successful, the third switching device is closed, the fourth switching device is disconnected, the battery pack 1 is charged through the fifth switching device and the third switching device, and the charging process is exited after the battery pack is fully charged.
The charging method disclosed by the invention is mainly suitable for the situation that a super quick charging network is not completely popularized, and as a transition vehicle type, the charging method can be compatible with a high-voltage electric framework of an electric vehicle of a high-voltage and low-voltage charging platform, meets the market demand, and is convenient for charging new energy vehicles on different charging platforms or charging piles.
The same portions of the present disclosure as the above battery pack are not described herein.
The present disclosure directly charges the battery pack 1 by the first switching device being turned on when the charging voltage of the dc interface 2 is the rated voltage of the battery pack 1, and the charging voltage is sent to the boosting module 100 by the second switching device being turned on when the charging voltage of the dc interface 2 is smaller than the rated voltage of the battery pack 1, so as to boost the charging voltage to the rated voltage, thereby charging the battery pack 1.
It is to be understood that the above-described specific embodiments of the present disclosure are merely illustrative of or illustrative of the principles of the present disclosure and are not to be construed as limiting the present disclosure. Accordingly, any modification, equivalent replacement, improvement or the like made without departing from the spirit and scope of the present disclosure should be included in the protection scope of the present disclosure. Further, it is intended that the following claims cover all such variations and modifications that fall within the scope and bounds of the appended claims, or equivalents of such scope and bounds.
Claims (10)
1. A battery pack, comprising:
the first circuit loop is provided with a direct current interface (2), a first switching device and a battery pack (1);
the second circuit loop is provided with the direct current interface (2), a second switching device, a boosting module (100) and the battery pack (1);
and the battery management system (200) is connected with the first circuit loop and the second circuit loop and is used for acquiring the charging voltage at the direct current interface (2) and selectively switching on and off the first switching device and the second switching device according to the charging voltage.
2. The battery pack according to claim 1, further comprising,
the boost circuit comprises a third circuit loop, wherein the boost module (100), a third switching device and the battery pack are arranged on the third circuit loop, the third circuit loop further comprises a first parallel circuit which is connected with the third switching device in parallel, and a pre-charging resistor (5) and a fourth switching device are arranged on the first parallel circuit.
3. A battery pack according to claim 2, wherein the third circuit loop further comprises a second parallel circuit arranged in parallel with the battery pack (1), the second parallel circuit being provided with an output interface (8), the output interface (8) being connected to a power distribution unit (300).
4. The battery pack according to claim 1, further comprising,
a fourth circuit loop comprising: the charging system comprises an alternating current interface (6), a vehicle-mounted charger (7) and the battery pack (1), wherein the vehicle-mounted charger (7) is used for converting alternating current of the alternating current interface (6) into direct current, boosting the direct current to rated voltage of the battery pack (1), and outputting the direct current to the battery pack (1) for charging.
5. The battery pack according to claim 4, further comprising:
the vehicle-mounted charger (7), the third switching device and the battery pack (1) are arranged on the fifth circuit loop, the fifth circuit loop further comprises a first parallel circuit which is connected with the third switching device in parallel, and a pre-charging resistor (5) and a fourth switching device are arranged on the first parallel circuit.
6. The battery pack according to claim 5, wherein the fifth circuit loop further comprises a second parallel circuit arranged in parallel with the battery pack (1), wherein an output interface (8) is arranged on the second parallel circuit, and wherein the output interface (8) is connected with a power distribution unit (300).
7. The battery pack according to claim 1, wherein the first switching device includes a first relay (101) and a second relay (102);
one end of the first relay (101) is connected with the positive electrode of the direct current interface (2), and the other end of the first relay is connected with the positive electrode of the battery pack (1);
one end of the second relay (102) is connected with the negative electrode of the direct current interface (2), and the other end of the second relay is connected with the negative electrode of the battery pack (1).
8. The battery pack according to claim 1, wherein the second switching device includes a third relay (103) and a fourth relay (104);
one end of the third relay (103) is connected with the positive electrode of the direct current interface (2), and the other end of the third relay is used for being connected with the boosting module (100);
one end of the fourth relay 104 is connected with the negative electrode of the direct current interface (2), and the other end of the fourth relay is used for being connected with the boosting module (100).
9. The battery pack according to claim 2 or 5, wherein the third switching device is a seventh relay (107);
the fourth switching device is a fifth relay (105);
one end of the pre-charging resistor (5) is connected with one end of the seventh relay (107), and the other end of the pre-charging resistor is connected with one end of the fifth relay (105);
the other end of the fifth relay (105) is connected to the other end of the seventh relay (107).
10. A vehicle characterized by comprising the battery pack according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121036065.3U CN215300199U (en) | 2021-05-14 | 2021-05-14 | Battery pack and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121036065.3U CN215300199U (en) | 2021-05-14 | 2021-05-14 | Battery pack and vehicle |
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| CN215300199U true CN215300199U (en) | 2021-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023122937A1 (en) * | 2021-12-28 | 2023-07-06 | 宁德时代新能源科技股份有限公司 | Battery charging circuit and method, device, and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023122937A1 (en) * | 2021-12-28 | 2023-07-06 | 宁德时代新能源科技股份有限公司 | Battery charging circuit and method, device, and storage medium |
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