Battery module and energy storage device

Abstract

This utility model relates to the field of battery energy storage technology, specifically to a battery module and energy storage device. The battery module includes a battery cell. The top of the battery cell is provided with a first positioning member and a first plug-in terminal located within the first positioning member, with the first plug-in terminal protruding from the first positioning member. The bottom of the battery cell is provided with a first positioning groove and a second plug-in terminal located within the first positioning groove. The first plug-in terminal and the second plug-in terminal are matched, and the first positioning member matches the first positioning groove. During handling or assembly, the first and second plug-in terminals of this utility model are less susceptible to impact, ensuring the stability of the electrical connection between battery modules and thus improving the performance of the energy storage device.

Description

Technical Field

[0001] This utility model relates to the field of battery energy storage technology, and in particular to a battery module and energy storage device. Background Technology

[0002] Stacked energy storage battery packs have high output power and capacity, and are widely used in various fields. They are typically composed of several battery modules stacked together. Each battery module has a first plug-in terminal on top and a second plug-in terminal on the bottom that corresponds to the first plug-in terminal. When several battery modules are stacked, the first plug-in terminal of the battery module at the bottom is plugged into the second plug-in terminal of the battery module at the top to achieve electrical connection between two adjacent battery modules.

[0003] Currently, the first connector of the existing battery cell is exposed on the top of the battery module, which is easily bumped during handling or assembly, affecting the stability of the electrical connection between battery modules and hindering the use of stacked energy storage battery packs. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a battery module and energy storage device to solve the problem that in the prior art, the first plug-in terminal of the existing battery module is exposed on the top of the battery module, which is easily bumped during transportation or assembly, affecting the stability of the electrical connection between battery modules and is not conducive to the use of stacked energy storage battery packs.

[0005] This utility model discloses a battery module, including: a battery cell, the top of the battery cell is provided with a first positioning member and a first plug-in terminal located in the first positioning member, the first plug-in terminal being exposed from the first positioning member; the bottom of the battery cell is provided with a first positioning groove and a second plug-in terminal located in the first positioning groove; wherein, the first plug-in terminal and the second plug-in terminal are matched, and the first positioning member and the first positioning groove are matched.

[0006] Optionally, a second positioning member is provided on the top of the battery cell, and a second positioning groove is provided on the bottom of the battery cell, wherein the second positioning member matches the first positioning groove.

[0007] Optionally, the first positioning member and the second positioning member are respectively distributed on opposite sides of the battery cell along the length direction of the battery cell.

[0008] Optionally, the first positioning member includes a first housing and a second housing connected to each other. The first housing has a first receiving cavity with a first opening at its opposite ends. The first opening is arranged in a vertical direction. The first plug-in terminal is located in the first receiving cavity and exposed along the first opening. The second housing has a second receiving cavity with a second opening. The second positioning member includes a third housing located on the side close to the first housing. The third housing has a third receiving cavity with a third opening. In the length direction of the battery cell, the second opening and the third opening are opposite to each other.

[0009] Optionally, the first positioning member and the second positioning member have a rectangular structure.

[0010] Optionally, both the first and second positioning members are connected to positioning pieces on their outer peripheries, and the positioning pieces are connected to the battery cell by fasteners.

[0011] Optionally, a buffer pad made of silicone material is provided on top of each of the battery cells.

[0012] Optionally, the number of buffer pads is set to multiple, and the multiple buffer pads are distributed on the battery cell along the circumference of the battery cell.

[0013] This utility model also discloses an energy storage device, including a battery management module and the aforementioned battery modules. Several battery modules are stacked vertically. In two adjacent battery modules, the first positioning member of one battery module extends into the first positioning groove of the other battery module, and the first plug-in terminal of one battery module is plugged into the second plug-in terminal of the other battery module. The battery management module is located on the top battery module. The bottom of the battery management module is provided with a third positioning groove and a third plug-in terminal that match the battery module. The first positioning member of the battery module is inserted into the third positioning groove, and the third plug-in terminal is plugged into the first plug-in terminal.

[0014] Optionally, each of the battery cells and the battery management module is provided with an explosion-proof port.

[0015] Compared with the prior art, the beneficial effects of the battery module and energy storage device provided by the present utility model are as follows: the top of the battery cell is provided with a first positioning member and a first plug-in terminal located in the first positioning member. The first positioning member provides a protective environment for the first plug-in terminal. When transporting or assembling the battery module, the first positioning member can protect the first plug-in terminal from damage such as bumps, ensure the stability of the electrical connection between battery modules, and thus improve the performance of the battery module and energy storage device. Attached Figure Description

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1 This is one of the structural schematic diagrams of a battery cell provided in the embodiments of this utility model;

[0018] Figure 2 This is the second schematic diagram of the structure of a battery cell provided in this embodiment of the present invention;

[0019] Figure 3 This is a bottom view of a battery cell provided in an embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of the battery module provided in this embodiment of the utility model;

[0021] Figure 5 This is a bottom view of the battery management module provided in this embodiment of the utility model.

[0022] The labels for the attached figures are as follows:

[0023] 10. Battery module; 110. Battery cell; 111. First plug-in terminal; 112. First positioning component; 1121. First housing; 1101. First opening; 1122. Second housing; 1102. Second opening; 113. Second plug-in terminal; 114. First positioning groove; 115. Second positioning component; 1151. Third housing; 1103. Third opening; 116. Second positioning groove; 20. Battery management module; 210. Third plug-in terminal; 220. Third positioning groove; 230. Connection port; 30. Positioning piece; 40. Fastener; 50. Buffer pad; 60. Explosion-proof port. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] This utility model embodiment provides a battery module 10, such as Figures 1 to 3 As shown, the battery module 10 includes a battery cell 110. The top of the battery cell 110 is provided with a first positioning member 112 and a first plug-in terminal 111 located in the first positioning member 112. The first plug-in terminal 111 protrudes from the first positioning member 112. The bottom of the battery cell 110 is provided with a first positioning groove 114 and a second plug-in terminal 113 located in the first positioning groove 114. The first plug-in terminal 111 and the second plug-in terminal 113 are matched, and the first positioning member 112 and the first positioning groove 114 are matched.

[0026] In this embodiment, a first positioning member 112 and a first plug-in terminal 111 located within the first positioning member 112 are provided on the top of the battery cell 110. The first positioning member 112 provides a protective environment for the first plug-in terminal 111. When transporting or assembling the battery module 10, the first positioning member 112 can protect the first plug-in terminal 111 from damage such as bumps.

[0027] When assembling an energy storage device using the battery modules 10 of this embodiment, a first positioning member 112 is matched with a first positioning groove 114. In two adjacent battery modules 10, the first positioning member 112 of one battery module 10 is inserted into the first positioning groove 114 of the other battery module 10. Guided by the first positioning member 112 and the first positioning groove 114, the two adjacent battery modules 10 are quickly positioned. A first plug-in terminal 111 is matched with a second plug-in terminal 113 to facilitate electrical connection between the two adjacent battery modules 10. This improves the assembly efficiency of the energy storage device and ensures its operational stability.

[0028] More specifically, when several battery modules 10 are stacked to form an energy storage device, in two adjacent battery modules 10, the first positioning member 112 of one battery module 10 extends into the first positioning groove 114 of the other battery module 10, and the first plug-in terminal 111 of one battery module 10 is plugged into the second plug-in terminal 113 of the other battery module 10; thus, the two adjacent battery modules 10 are electrically connected. Simultaneously, a battery management module 20 is disposed on the uppermost battery module 10. The bottom of the battery management module 20 is provided with a third positioning groove 220 and a third plug-in terminal 210 that match the battery module 10. The first positioning member 112 of the battery module 10 is inserted into the third positioning groove 220, and the third plug-in terminal 210 is plugged into the first plug-in terminal 111. This achieves the electrical connection between the battery management module 20 and the battery module 10. In this embodiment, the first plug-in terminal 111 and the second plug-in terminal 113 are not easily bumped during the handling and assembly process of the battery module 10, which ensures the stability of the electrical connection between the battery modules 10 and thus improves the performance of the energy storage device.

[0029] Meanwhile, in this embodiment, the battery module 10 has the first plug-in terminal 111 located in the first positioning member 112, and the corresponding second plug-in terminal 113 located in the first positioning groove 114. When the two battery modules 10 are stacked, there is no need to set a separate receiving groove at the bottom of the battery cell 110 for matching with the first positioning member 112, which simplifies the external structure of the battery cell 110 and facilitates the production and processing of the battery cell 110.

[0030] As a preferred embodiment, refer to Figures 1 to 3 The top of the battery cell 110 is provided with a second positioning member 115, and the bottom of the battery cell 110 is provided with a second positioning groove 116. The second positioning member 115 matches the first positioning groove 114.

[0031] The second positioning member 115 at the top and the second positioning groove 116 at the bottom of the battery cell 110 are configured to align with the first positioning member 112 and the second positioning member 115 of the lower battery cell 10 when the battery modules 10 are stacked vertically to form an energy storage device. This ensures the accurate positioning of the two battery modules 10, facilitates the assembly of the energy storage device, and improves assembly efficiency. It also further enhances the stability of the energy storage device.

[0032] As a preferred embodiment, refer to Figure 1 and Figure 2 The first positioning member 112 and the second positioning member 115 are respectively distributed on opposite sides of the battery cell 110 along the length direction of the battery cell 110.

[0033] The aforementioned distribution limitation of the first positioning member 112 and the second positioning member 115 on the battery cell 110 enables the adjacent battery modules 10 to be quickly positioned again when the battery modules 10 are stacked in sequence, and improves the positioning accuracy of the two battery modules 10.

[0034] As a preferred embodiment, refer to Figure 1 and Figure 2 The first positioning member 112 includes a first housing 1121 and a second housing 1122 connected to each other. The first housing 1121 has a first receiving cavity with a first opening 1101 formed at opposite ends. The first opening 1101 is arranged in a vertical direction. The first plug-in terminal 111 is located in the first receiving cavity and exposed along the first opening 1101. The second housing 1122 has a second receiving cavity with a second opening 1102. The second positioning member 115 includes a third housing 1151. The third housing 1151 is located on the side close to the first housing 1121. The third housing 1151 has a third receiving cavity with a third opening 1103 formed on it. In the length direction of the battery cell 110, the second opening 1102 and the third opening 1103 are opposite to each other.

[0035] The first positioning member 112 in this embodiment is composed of a first housing 1121 and a second housing 1122. The first housing 1121 has a first receiving cavity with a first opening 1101 formed at its two opposite ends. The first receiving cavity provides an installation environment for the first plug-in terminal 111 and exposes the first plug-in terminal 111 from the first opening 1101 so that when stacking battery modules 10, two adjacent battery modules 10 can be electrically connected to the second plug-in terminal 113 through the first plug-in terminal 111. The first positioning member 112 also includes a second housing 1122, on which a second receiving cavity with a second opening 1102 is formed. Meanwhile, the second positioning member 115 includes a third housing 1151, which is located on the side close to the first housing 1121. A third receiving cavity with a third opening 1103 is formed on the third housing 1151. In the length direction of the battery cell 110, the second opening 1102 and the third opening 1103 are opposite to each other. When the user is carrying the battery module 10, both hands can be inserted into the first receiving cavity and the second receiving cavity through the second opening 1102 and the third opening 1103 respectively. At this time, the first positioning member 112 and the second positioning member 115 act as handles, making it easier for the user to carry and stack the battery module 10 and improving the application convenience of the battery module 10.

[0036] As a preferred embodiment, refer to Figure 1 and Figure 2 The first positioning element 112 and the second positioning element 115 are rectangular in shape.

[0037] The shape of the first positioning member 112 and the second positioning member 115 is defined to facilitate the quick matching and positioning of the first positioning member 112 with the first positioning groove 114 and the second positioning member 115 with the second positioning groove 116, thereby ensuring the high efficiency of the battery module 10 when stacked into an energy storage device; at the same time, it is also convenient for users to handle with both hands, improving the user's convenience and experience.

[0038] As a preferred embodiment, refer to Figure 1 and Figure 2 Positioning pieces 30 are connected to the outer periphery of the first positioning member 112 and the second positioning member 115. The positioning pieces 30 are connected to the battery cell 110 by fasteners 40.

[0039] The positioning piece 30 is designed to cooperate with the fastener 40 to securely mount the first positioning member 112 and the second positioning member 115 onto the battery cell 110, thereby improving the structural stability of the battery module 10. The fastener 40 can be a screw.

[0040] As a preferred embodiment, refer to Figure 1 and Figure 2Each battery cell 110 has a buffer pad 50 on top, and the buffer pad 50 is made of silicone material.

[0041] In this system, after the battery modules 10 are stacked, the buffer pad 50 provides mechanical protection between the battery modules 10. It can absorb and disperse external impacts and vibrations, reducing the transmission of these forces to the battery modules 10, thereby protecting the battery modules 10 and the energy storage device. The buffer pad 50 is made of silicone material. Due to its excellent elasticity, wear resistance, and chemical stability, silicone material can provide good cushioning effect.

[0042] As a preferred embodiment, a plurality of buffer pads 50 are provided, and the plurality of buffer pads 50 are distributed on the battery cell 110 along the circumference of the battery cell 110.

[0043] The aforementioned buffer pads 50 are evenly distributed on the battery cell 110, thereby improving the buffering effect. In this embodiment, the number of buffer pads 50 is not specifically limited. Figures 1 to 2 The example given is a 50-inch cushioning pad with four pads.

[0044] This application also discloses an energy storage device, referring to... Figure 4 and Figure 5 The system includes a battery management module 20 and several battery modules 10 as described in the preceding embodiments. Several battery modules 10 are stacked vertically. In two adjacent battery modules 10, the first positioning member 112 of one battery module 10 extends into the first positioning groove 114 of the other battery module 10, and the first plug-in terminal 111 of one battery module 10 is plugged into the second plug-in terminal 113 of the other battery module 10. The battery management module 20 is disposed on the top battery module 10. The bottom of the battery management module 20 is provided with a third positioning groove 220 and a third plug-in terminal 210 that match the battery module 10. The first positioning member 112 of the battery module 10 is inserted into the third positioning groove 220, and the third plug-in terminal 210 is plugged into the first plug-in terminal 111, completing the electrical connection between the battery module 10 and the battery management module 20.

[0045] This energy storage device has the same structure and beneficial effects as the battery module 10 in the foregoing embodiments. The structure and beneficial effects of the battery module 10 have been described in detail in the foregoing embodiments and will not be repeated here.

[0046] Reference Figure 4 It should be mentioned that the battery management module 20 is equipped with a connection port 230 for connecting to electrical equipment to apply energy storage devices.

[0047] As a preferred embodiment, refer to Figure 4 Each battery cell 110 and the battery management module 20 are equipped with an explosion-proof port 60. The explosion-proof port 60 can release the internal pressure of the battery module 10 and the battery management module 20 in a timely manner, preventing the battery module 10 or the battery management module 20 from exploding or leaking, and protecting the safety of users and energy storage equipment.

[0048] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A battery module, characterized by, include: The battery cell has a first positioning member and a first plug-in terminal located within the first positioning member at its top, with the first plug-in terminal protruding from the first positioning member; the battery cell also has a first positioning groove and a second plug-in terminal located within the first positioning groove at its bottom. The first plug-in terminal is matched with the second plug-in terminal, and the first positioning member is matched with the first positioning groove.

2. The battery module of claim 1, wherein, The top of the battery cell is provided with a second positioning member, and the bottom of the battery cell is provided with a second positioning groove, the second positioning member matching the first positioning groove.

3. The battery module of claim 2, wherein, The first positioning member and the second positioning member are respectively distributed on opposite sides of the battery cell along the length direction of the battery cell.

4. The battery module of claim 3, wherein, The first positioning member includes a first housing and a second housing connected to each other. The first housing has a first receiving cavity with a first opening at its opposite ends. The first opening is arranged in a vertical direction. The first plug-in terminal is located in the first receiving cavity and exposed along the first opening. The second housing has a second receiving cavity with a second opening. The second positioning member includes a third housing located on the side close to the first housing. The third housing has a third receiving cavity with a third opening. In the length direction of the battery cell, the second opening and the third opening are opposite to each other.

5. The battery module of claim 4, wherein, The first positioning element and the second positioning element are rectangular in shape.

6. The battery module of claim 4, wherein, Both the first and second positioning members have positioning pieces connected to their outer peripheries, and the positioning pieces are connected to the battery cell by fasteners.

7. The battery module of any one of claims 1 to 6, wherein, Each of the battery cells is provided with a cushioning pad on top, and the cushioning pad is made of silicone material.

8. The battery module of claim 7, wherein, The number of buffer pads is set to multiple, and the multiple buffer pads are distributed on the battery cell along the circumference of the battery cell.

9. An energy storage device, characterized by, Includes a battery management module and a battery module as described in any one of claims 1 to 8. Several battery modules are stacked in sequence in the vertical direction. Among two adjacent battery modules, the first positioning member of one battery module extends into the first positioning groove of the other battery module, and the first plug-in terminal of one battery module is plugged into the second plug-in terminal of the other battery module. The battery management module is located on the top of the battery module. The bottom of the battery management module is provided with a third positioning groove and a third plug-in terminal that match the battery module. The first positioning member of the battery module is inserted into the third positioning groove, and the third plug-in terminal is plugged into the first plug-in terminal.

10. The energy storage device of claim 9, wherein, Each of the battery cells and the battery management module is equipped with an explosion-proof port.

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