CN221783376U - Battery modules and battery packs - Google Patents
Battery modules and battery packs Download PDFInfo
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- CN221783376U CN221783376U CN202323193245.4U CN202323193245U CN221783376U CN 221783376 U CN221783376 U CN 221783376U CN 202323193245 U CN202323193245 U CN 202323193245U CN 221783376 U CN221783376 U CN 221783376U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application belongs to the technical field of power electronics, and provides a battery module and a battery pack, wherein the battery module connects all battery modules in series by using a first switch, and simultaneously connects all battery modules by using a series switch group to form a maintainable module structure, when single or a plurality of battery modules have faults such as low voltage or low capacity, the fault battery module can be removed through the first switch and the series switch group, the personal and property safety can not be threatened even if the battery module is continuously used, the scrapping treatment of the whole battery module/battery pack is not needed, and the battery module is simple and reliable in structure and low in cost.
Description
Technical Field
The application belongs to the technical field of power electronics, and particularly relates to a battery module and a battery pack.
Background
The conventional battery pack has a large number of battery cores and high cost, and when single or multiple battery cores have low capacity, low voltage or other anomalies, the whole battery pack can be scrapped, so that the cost is extremely high. In addition, in the use process of the battery pack, single or multiple battery cells are abnormal, such as limit under-voltage, so that great potential safety hazards can be brought to personal properties.
Disclosure of Invention
In view of the above problems, the present application provides a battery module and a battery pack, which are aimed at solving the problem that the battery cells in the conventional battery module are abnormal, and the whole battery module/battery pack needs to be scrapped, for example, if the battery module/battery pack is continuously used, the battery module/battery pack brings great potential safety hazard to the personal property.
In a first aspect, an embodiment of the present application provides a battery module, where the battery module includes a plurality of battery modules and a plurality of first switches, and the plurality of battery modules are connected in series between a positive electrode and a negative electrode of the battery module through the plurality of first switches, and the battery module further includes a series switch group disposed between the battery modules, where the series switch group is used to bypass any number of the battery modules.
In the technical scheme of the embodiment of the application, all the battery modules are connected in series by using the first switch, and all the battery modules are connected by using the series switch group to form a maintainable module structure, when single or multiple battery modules have faults such as low voltage or low capacity, the fault battery modules can be removed (i.e. bypassed) by the first switch and the series switch group, so that the personal and property safety is not threatened when the battery modules are continuously used, and the whole battery modules/battery packs are not required to be scrapped.
In some embodiments, the battery module includes m of the battery modules, and the series switch group includes m-1 second switches connected in series;
The nth second switch is connected between the first pole of the nth battery module and the first pole of the (n+1) th battery module, the value of m is a positive integer greater than or equal to 3, n is epsilon (1, m-1), and the first pole is positive pole or negative pole.
In the technical scheme of the embodiment of the application, the series switch group is connected with the positive electrode or the negative electrode of the battery module in series, when the nth battery module is abnormal, the nth battery module can be bypassed by opening the nth first switch and closing the nth second switch, and the use of the whole battery module is not influenced.
In some embodiments, the first switch is positive and the second switch is negative;
The third switch is connected between the negative electrode of the 1 st battery module and the negative electrode of the 2 nd battery module, and the negative electrode of the 1 st battery module is connected with the negative electrode of the battery module.
In the technical scheme of the embodiment of the application, when the first electrode is positive, and the 1 st battery module is bypassed, the third switch is needed to connect the negative electrode of the 2 nd battery module with the negative electrode of the battery module, so that each battery module in the whole battery module can be bypassed without influencing the use of the whole battery module.
In some embodiments, the first switch is a positive pole and the second switch is a negative pole;
The third switch is connected between the positive electrode of the m-th battery module and the positive electrode of the m-1-th battery module, and the positive electrode of the m-th battery module is connected with the positive electrode of the battery module.
In the technical scheme of the embodiment of the application, when the first electrode is the negative electrode, and the m-th battery module is bypassed, the third switch is needed to connect the positive electrode of the m-1-th battery module with the positive electrode of the battery module, so that each battery module in the whole battery module can be bypassed without influencing the use of the whole battery module.
In the technical scheme of the embodiment of the application, the battery module also provides a maintenance state, and in the maintenance state, a plurality of battery modules of the battery module are removed by-pass and still can be used without bringing potential safety hazard.
In some embodiments, the first switch comprises a contactor, a circuit breaker, a relay, or a disconnector.
In the technical scheme of the embodiment of the application, the implementation mode of the first switch which bears larger current is provided, so that the charge and discharge power of the battery module is not influenced.
In some embodiments, the second switch, the third switch comprises a contactor, a circuit breaker, a relay, or a disconnector.
In the technical scheme of the embodiment of the application, the implementation modes of the second switch and the third switch which bear larger current are provided, so that the charge and discharge power of the battery module is not influenced.
In some embodiments, the battery module includes one or more battery cells, a plurality of the battery cells being connected in series and/or parallel with each other.
In the technical scheme of the embodiment of the application, each battery module can be one battery core or a plurality of battery cores can be used as a group, so that the cost of the first switch and the series switch group can be saved, and the product volume can be reduced.
In a second aspect, an embodiment of the present application further provides a battery pack including at least one battery module as described above.
According to the technical scheme provided by the embodiment of the application, one or more battery modules are combined into one battery pack, so that the battery pack is used for bypassing any number of battery modules, a fault battery module can be removed, the personal and property safety is not threatened when the battery pack is continuously used, and the whole battery pack is not required to be scrapped.
In some embodiments, the control circuit is connected with each of the first switch and the series switch group, and the control circuit is used for controlling the on and off of the first switch and the series switch group.
In the technical scheme of the embodiment of the application, the control circuit is a part of a Battery management system (Battery MANAGEMENT SYSTEM, BMS) arranged in the Battery pack, and an external circuit is not required to implement the control on the Battery pack, so that the Battery pack can remove a fault Battery module to continue to operate, the application cost of a product is reduced, and the reliability of the product is provided.
In some embodiments, the battery module further comprises a detection circuit, wherein the detection circuit is connected with each battery module and is used for detecting the electric parameter of each battery module and outputting a detection signal;
The control circuit is connected with the detection circuit and is also used for controlling the on and off of the first switch and the series switch group according to the detection signal.
In the technical scheme of the embodiment of the application, the detection circuit is arranged in the BMS, and an external circuit is not required to detect the battery module, so that the battery pack can continue to operate by detecting and eliminating the failed battery module, the application cost of the product is reduced, and the reliability of the product is provided.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:
fig. 1 is a schematic view showing a structure of a battery module according to an embodiment of the present application;
fig. 2 is a schematic view illustrating a structure of a battery module according to an embodiment of the present application;
Fig. 3 is a schematic view illustrating a structure of a battery module according to an embodiment of the present application;
Fig. 4 is a schematic view showing the structure of a battery module according to an embodiment of the present application;
fig. 5 is a schematic view showing the structure of a battery pack according to an embodiment of the present application;
fig. 6 is a schematic view showing a structure of a battery pack according to an embodiment of the present application;
fig. 7 is a schematic view showing a structure of a battery pack according to an embodiment of the present application.
Detailed Description
Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.
In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.
The conventional battery modules are used by connecting the battery cells in series and parallel through the welding of the tabs, and some battery cells reach 200 battery cells which are connected in series, so that the cost is high. When single or multiple battery cells have low capacity, low voltage or other anomalies, the whole battery pack can only be scrapped, and the cost is extremely high. When the battery pack is applied to a new energy vehicle, if a single or a plurality of battery cells are abnormal in the driving process, such as limit under-voltage, the whole vehicle system is caused to be under high voltage, and the personal and property safety is greatly threatened.
Aiming at the problems that when the battery core in the conventional battery module is abnormal, the whole battery pack needs to be scrapped, the cost is extremely high, and the personal and property safety is extremely threatened in the application process, the application provides the battery module capable of being automatically maintained.
According to some embodiments of the present application, referring to fig. 1 and 2, fig. 1 shows a schematic structural diagram of a battery module according to an embodiment of the present application, fig. 2 shows a schematic structural diagram of a battery module according to an embodiment of the present application, and for convenience of explanation, only the portions related to the embodiment are shown in detail as follows:
The battery module 10 includes a plurality of battery modules m_m (where m=1, 2,3 … …) and a plurality of first switches k_m-1, the plurality of battery modules m_m being connected in series between the positive electrode v+ and the negative electrode V-of the battery module 10 through the plurality of first switches k_m-1, the battery module 10 further includes a series switch group 11 disposed between the battery modules m_m, the series switch group 11 being for bypassing any number of the battery modules m_m.
Wherein, the battery module M_m comprises one or more electric cores, and the electric cores are connected in series and/or in parallel. The battery module M_m is formed by a plurality of battery cells, each battery cell can be connected through a tab, the battery module M_m is provided with a positive electrode and a negative electrode which are externally connected, and a first switch K_m-1 is connected between every two adjacent battery modules M_m; the series switch group 11 includes a plurality of second switches s_m-1 connected in series, and the second switches s_m-1 are connected in parallel with the battery modules m_m and the first switches k_m-1 connected in series, respectively. Therefore, by controlling the first switch K_m-1 to be turned off and controlling the corresponding second switch S_m-1 in the series switch group 11 to be turned on, the battery module M_m at the corresponding position can be bypassed so as to achieve the purpose of eliminating the abnormal battery module M_m.
In the technical scheme of the embodiment of the application, all the battery modules M_m are connected in series by using the first switch K_m-1, and all the battery modules M_m are connected by using the series switch group 11 to form a maintainable module structure, when a single or a plurality of battery modules M_m have faults such as low voltage or low capacity, the fault battery modules M_m can be removed (i.e. bypassed) by using the first switch K_m-1 and the series switch group 11, the personal and property safety is not threatened when the battery module 10 is continuously used, and the whole battery module 10/battery pack does not need to be scrapped.
In some embodiments, the battery module 10 includes M battery modules M_m, and the series switch group 11 includes M-1 series-connected second switches S_m-1;
The nth second switch s_m-1 is connected between the first pole of the nth battery module m_m and the first pole of the (n+1) th battery module m_m, wherein the value of M is a positive integer greater than or equal to 3, n is epsilon (1, M-1), and the first pole is positive pole or negative pole.
In one battery module 10, all the second switches s_m-1 are simultaneously connected with the positive electrode of the battery module m_m, so that the nth second switch s_m-1 is connected in parallel with the (n+1) th battery module m_m and the nth first switch k_m-1 in series, and the nth second switch s_m-1 can bypass the (n+1) th battery module m_m, see fig. 1. Or all the second switches s_m-1 are connected with the negative electrode V-of the battery module m_m at the same time, so that the nth second switch s_m-1 is connected with the nth battery module m_m and the nth first switch k_m-1 in parallel in series, and the nth second switch s_m-1 can bypass the nth battery module m_m, see fig. 2.
In the technical scheme of the embodiment of the application, the series switch group 11 is a positive electrode or a negative electrode of the series-connected battery module M_m, when the nth battery module M_m is abnormal, the nth battery module M_m can be bypassed by opening the nth first switch K_m-1 and closing the nth second switch S_m-1, and the use of the whole battery module 10 is not affected.
Referring to fig. 3, fig. 3 is a schematic structural view of a battery module 10 according to an embodiment of the present application, and for convenience of explanation, only the portions related to the present embodiment are shown, and the details are as follows:
In some embodiments, the battery module 10 further includes a third switch P1, the first pole of the battery module m_m is positive, and the second pole of the battery module m_m is negative; the third switch P1 is connected between the negative electrode of the 1 st battery module m_m and the negative electrode of the 2 nd battery module m_m, and the negative electrode of the 1 st battery module m_m is connected to the negative electrode V-of the battery module 10.
When the 1 st battery module m_m is bypassed in the case where the first electrode is the positive electrode, the third switch P1 is required to connect the negative electrode of the 2 nd battery module m_m to the negative electrode V-of the battery module 10. In the technical solution of the embodiment of the present application, each battery module m_m in the entire battery module 10 can be bypassed without affecting the use of the entire battery module 10.
Referring to fig. 4, fig. 4 is a schematic structural view of a battery module 10 according to an embodiment of the present application, and for convenience of explanation, only the portions related to the present embodiment are shown, and the details are as follows:
In some embodiments, the battery module 10 further includes a third switch P1, wherein the first pole of the battery module m_m is negative, and the second pole of the battery module m_m is positive; the third switch P1 is connected between the positive electrode of the mth battery module m_m and the positive electrode of the M-1 th battery module m_m, and the positive electrode of the mth battery module m_m is connected to the positive electrode v+ of the battery module 10.
When the mth battery module m_m is bypassed in the case where the first electrode is the negative electrode, the third switch P1 is required to connect the positive electrode of the mth-1 th battery module m_m to the positive electrode v+ of the battery module 10. In the technical solution of the embodiment of the present application, each battery module m_m in the entire battery module 10 can be bypassed without affecting the use of the entire battery module 10.
It is understood that the battery module 10 has a normal state and a maintenance state; in the normal state, each first switch K_m-1 is turned on, and each second switch S_m-1 and each third switch P1 are turned off, which indicates that each battery module M_m in the battery module 10 is operating normally. In the maintenance state, when the first electrode is negative, the nth first switch k_m-1 is turned off, the nth second switch s_m-1 is turned on, and if n=1 or n=m-1, the third switch P1 is turned on. In the maintenance state, the battery modules m_m of the battery module 10 are bypassed and can still be used without bringing about potential safety hazards.
In some embodiments, the first switch K_m-1 comprises a contactor, a circuit breaker, a relay, or a disconnector. The first switch k_m-1 adopts these devices to be able to withstand a larger current than the semiconductor transistor, so that the charge and discharge power of the battery module 10 is not affected.
In some embodiments, the second switch s_m-1, the third switch P1 comprises a contactor, a circuit breaker, a relay, or a disconnector. The second switch s_m-1 and the third switch P1 use these devices to withstand a larger current than the semiconductor transistor, so that the charge and discharge power of the battery module 10 is not affected.
In some embodiments, battery module m_m includes one or more cells, which are connected in series and/or parallel with each other.
In the technical scheme of the embodiment of the application, each battery module M_m can be one battery core or a plurality of battery cores can be used as a group, so that the cost of the first switch K_m-1 and the series switch group 11 can be saved, and the product volume can be reduced.
The battery module 10 provided in the embodiment of the present application is provided with the series switch group 11, so that the battery module 10 has a maintenance line to implement a maintenance State, and can perform equalization processing on a single or multiple low-capacity or low-voltage battery modules m_m, that is, perform independent power replenishment, and pull the residual Charge amount (State of Charge, SOC) of the single or multiple low-capacity or low-voltage battery modules m_m with other battery modules m_m, thereby avoiding the problem that the whole battery module 10 cannot be used due to the abnormality of one battery module m_m.
In addition, all the first switches k_m-1 are opened, each battery module m_m is all open, and all the second switches s_m-1 and the third switches P1 are closed, so that the entire battery module 10 can be stopped from being charged and discharged. And the first switch K_m-1 of the nth abnormal battery module M_m is disconnected, and then all the other second switches S_m-1 are opened, so that the abnormal battery module M_m can be subjected to power-up operation, and repair is attempted.
According to some embodiments of the present application, referring to fig. 5, fig. 5 shows a schematic structure of a battery pack according to an embodiment of the present application, and for convenience of explanation, only the portions related to the embodiment are shown, and the following details are given:
The battery pack 100 includes at least one battery module 10 as described above. In the technical solution of the embodiment of the present application, one or more battery modules 10 are assembled into a battery pack 100, so that the battery pack 100 is used for bypassing any number of battery modules m_m, and thus, the faulty battery module m_m can be removed, and the battery pack 100 is not threatened in personal and property safety and does not need to be scrapped for the whole battery pack 100.
The plurality of battery modules 10 inside the battery pack 100 may be connected in series through a plurality of switches, and by providing a second series switch group between the battery modules 10, any number of battery modules 10 may be bypassed. It is understood that all the cells of one battery module 10 may be removed from the battery pack 100 by opening all the first switches k_m-1 and closing all the second switches s_m-1 and the third switches P1 in the battery module 10.
According to some embodiments of the present application, referring to fig. 6, fig. 6 shows a schematic structural diagram of a battery pack according to an embodiment of the present application, and for convenience of explanation, only the portions related to the present embodiment are shown, and the following details are given:
The battery pack 100 further includes a control circuit 12, wherein the control circuit 12 is connected to each of the first switch k_m-1 and the series switch group 11, and the control circuit 12 is configured to control the first switch k_m-1 and the series switch group 11 to be turned on and off.
The control circuit 12 is used for controlling the on and off of the third switch P1 in addition to the on and off of the first switch K_m-1 and the second switch S_m-1.
In the technical solution of the embodiment of the present application, the control circuit 12 is, for example, a part of a Battery management system (Battery MANAGEMENT SYSTEM, BMS) built in the Battery pack 100, and the external circuit is not required to implement these controls on the Battery pack 100, so that the Battery pack 100 can reject the failed Battery module m_m and continue to operate, thereby reducing the application cost of the product and providing the reliability of the product.
According to some embodiments of the present application, referring to fig. 7, fig. 7 shows a schematic structure of a battery pack according to an embodiment of the present application, and for convenience of explanation, only the portions related to the embodiment are shown, and the following details are given:
The battery pack 100 further includes a detection circuit 13, where the detection circuit 13 is connected to each battery module m_m, and is configured to detect an electrical parameter of each battery module m_m and output a detection signal; the control circuit 12 is connected to the detection circuit 13 and is further configured to control the first switch k_m-1 and the series switch group 11 to be turned on and off according to the detection signal.
The detection circuit 13 is disposed in the BMS, for example, as a part of the BMS protection circuit, and does not need to provide an external circuit to detect the battery module m_m, so that the battery pack 100 can continue to operate by detecting and rejecting the failed battery module m_m, thereby reducing the application cost of the product and providing the reliability of the product.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. The battery module is characterized by comprising a plurality of battery modules and a plurality of first switches, wherein the battery modules are connected between a positive electrode and a negative electrode of the battery module in series through the first switches, and the battery module further comprises a series switch group arranged between the battery modules, and the series switch group is used for bypassing any number of the battery modules.
2. The battery module according to claim 1, wherein the battery module includes m of the battery modules, and the series switch group includes m-1 second switches connected in series;
The nth second switch is connected between the first pole of the nth battery module and the first pole of the (n+1) th battery module, the value of m is a positive integer greater than or equal to 3, n is epsilon (1, m-1), and the first pole is positive pole or negative pole.
3. The battery module of claim 2, further comprising a third switch, wherein a first pole of the battery module is a positive pole and a second pole of the battery module is a negative pole;
The third switch is connected between the negative electrode of the 1 st battery module and the negative electrode of the 2 nd battery module, and the negative electrode of the 1 st battery module is connected with the negative electrode of the battery module.
4. The battery module of claim 2, further comprising a third switch, the first pole of the battery module being a negative pole and the second pole of the battery module being a positive pole;
The third switch is connected between the positive electrode of the m-th battery module and the positive electrode of the m-1-th battery module, and the positive electrode of the m-th battery module is connected with the positive electrode of the battery module.
5. The battery module of any one of claims 1 to 4, wherein the first switch comprises a contactor, a circuit breaker, a relay, or a disconnector.
6. The battery module of claim 3 or 4, wherein the second switch, the third switch comprises a contactor, a circuit breaker, a relay, or a disconnector.
7. The battery module according to any one of claims 1 to 4, wherein the battery module comprises one or more cells, a plurality of the cells being connected in series and/or in parallel with each other.
8. A battery pack comprising at least one battery module according to any one of claims 1 to 7.
9. The battery pack of claim 8, further comprising a control circuit coupled to each of the first switch and the series switch group, the control circuit for controlling the first switch and the series switch group to be turned on and off.
10. The battery pack of claim 9, further comprising a detection circuit coupled to each of the battery modules for detecting an electrical parameter of each of the battery modules and outputting a detection signal;
The control circuit is connected with the detection circuit and is also used for controlling the on and off of the first switch and the series switch group according to the detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323193245.4U CN221783376U (en) | 2023-11-24 | 2023-11-24 | Battery modules and battery packs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323193245.4U CN221783376U (en) | 2023-11-24 | 2023-11-24 | Battery modules and battery packs |
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| CN221783376U true CN221783376U (en) | 2024-09-27 |
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| CN202323193245.4U Active CN221783376U (en) | 2023-11-24 | 2023-11-24 | Battery modules and battery packs |
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- 2023-11-24 CN CN202323193245.4U patent/CN221783376U/en active Active
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