Battery and energy storage system

Abstract

The utility model discloses a battery and an energy storage system, and belongs to the technical field of batteries. The battery comprises a battery cell group, a shell, a plurality of buffer limiting pieces and a cover plate, the shell forms a containing cavity with an opening, and the containing cavity is used for containing the battery cell group; the buffer limiting pieces are arranged in the accommodating cavity, and each outer side wall, close to the opening, of the battery cell group is connected with at least one buffer limiting piece; and the cover plate is arranged at the opening in a covering manner. The complexity of design and process assembly is reduced, and the energy density, the reliability and the service life of the battery are effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a battery and an energy storage system. BACKGROUND

[0002] With the rapid development of application fields such as new energy vehicles and power grid energy storage, the demand for high-performance and high-safety energy storage systems is increasing. The structure design of a battery, as a core component of the energy storage system, directly affects the performance and safety of the entire energy storage system. In the related art, the overall design of the energy storage system is basically from a battery monomer to a battery module and then to a battery pack, which is a process of gradual integration. Each level has its specific function and design requirement, and the assembly process also corresponds, that is, the battery monomer is first stacked to form a module, the module pole is welded, and then the metal shell is used for protection, and then integrated into the box. However, this design and process assembly are complex and high in cost, and the increase of the structure and connecting piece leads to a large space occupied by the battery pack, resulting in a small number of battery monomers that can be accommodated, which limits the overall storage capacity and energy density of the energy storage system. CONTENT OF THE UTILITY MODEL

[0003] The application aims to at least solve one of the technical problems in the prior art. To this end, the application provides a battery and an energy storage system, which reduces the complexity of design and process assembly, and effectively improves the energy density, reliability and service life of the battery.

[0004] In a first aspect, the application provides a battery, comprising:

[0005] a battery cell group;

[0006] a shell, the shell forms a containing cavity with an opening, and the containing cavity is used for placing the battery cell group;

[0007] a plurality of buffer limiting pieces arranged in the containing cavity, and each outer side wall of the battery cell group close to the opening is connected with at least one buffer limiting piece;

[0008] a cover plate arranged at the opening.

[0009] According to the battery of this application, on the one hand, when the battery is subjected to external impact, the buffer limiting component can absorb part of the energy, reduce the direct impact on the cell assembly, and protect the cell assembly from damage; on the other hand, since the cell assembly is directly installed in the housing through the buffer limiting component, it not only restricts the position of the cell assembly in the housing cavity, reducing the possibility of displacement or shaking of the cell assembly during battery use and movement, ensuring the stability and safety of the battery, but also realizes the modular design, allowing the cell assembly to be directly integrated into the housing cavity of the battery, reducing the complexity of design and process assembly, thereby accelerating the production rate and facilitating mass production. At the same time, it eliminates the need for overly complicated accessories, materials, and manufacturing processes, saving production and manufacturing costs, and also makes full use of the space in the housing cavity, thereby effectively improving the energy density of the battery.

[0010] According to one embodiment of this application, the inner wall of the receiving cavity is provided with at least one of the aforementioned buffer limiting members; and / or

[0011] The bottom wall of the receiving cavity is provided with at least one of the aforementioned buffer limiting members.

[0012] According to one embodiment of this application, the buffer limiting member includes:

[0013] The main body is spaced apart from the inner wall corresponding to the receiving cavity;

[0014] Multiple connecting parts are provided, one end of which is connected to the main body at an angle, and the other end extends toward the inner wall of the receiving cavity, and at least one buffer space is formed between the main body, the connecting parts and the inner wall of the receiving cavity.

[0015] According to one embodiment of this application, at least a portion of the connecting portion, at one end away from the body, is connected to the inner wall corresponding to the receiving cavity; and / or

[0016] At least a portion of the connecting portion is spaced apart from the inner wall of the receiving cavity at one end away from the main body.

[0017] According to one embodiment of this application, the cover plate is provided with a heat dissipation section for dissipating heat from the battery cell assembly; and / or

[0018] A thermally conductive structural adhesive is provided between the buffer limiting member and the battery cell assembly.

[0019] According to one embodiment of this application, it also includes:

[0020] Two mounting portions are arranged opposite each other, the mounting portions being located within the receiving cavity and close to the opening;

[0021] A connector, the two ends of which are detachably connected to two mounting parts respectively, and the outer wall portion of the battery cell assembly facing the opening abuts against the connector.

[0022] According to one embodiment of this application, the battery cell assembly includes:

[0023] Multiple first buffer members are spaced apart along a first direction, and the first buffer members at both ends are respectively connected to the two buffer limiting members;

[0024] Multiple battery cells are provided, with one battery cell disposed between each two adjacent first buffer components;

[0025] Two second buffer members are spaced apart along a second direction. The sides of the two second buffer members that are close to each other are respectively connected to a plurality of said battery cells, and the sides of the two second buffer members that are far apart from each other are respectively connected to two said buffer limiting members. The first direction and the second direction intersect.

[0026] According to one embodiment of this application, the orientation of the opening intersects with the first direction and the second direction, respectively.

[0027] According to one embodiment of this application, the battery pack further includes:

[0028] A heating element is disposed on the side of the battery cell near the opening.

[0029] Secondly, this application provides an energy storage system that includes the battery described above.

[0030] The energy storage system according to this application achieves modular design, reduces the complexity of design and process assembly, saves space within the energy storage system, and effectively improves the overall storage capacity and energy density of the energy storage system.

[0031] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0032] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 This is a schematic diagram of the structure of the battery cover plate provided in the embodiment of this application;

[0034] Figure 2 This is an exploded view of the battery provided in an embodiment of this application;

[0035] Figure 3 This is an exploded view of the battery cell assembly provided in the embodiments of this application;

[0036] Figure 4This is a schematic diagram of the structure of the shell provided in the embodiment of this application.

[0037] Figure label:

[0038] 100. Battery cell pack;

[0039] 110. First buffer component; 120. Battery cell; 130. Second buffer component; 140. Circuit board; 150. Epoxy resin board; 160. Heating component;

[0040] 200. Shell; 210. Receiving cavity; 211. Opening;

[0041] 300. Buffer limiting component; 301. Main body; 302. Connecting part;

[0042] 310. First buffer limiter; 320. Second buffer limiter; 330. Third buffer limiter;

[0043] 400. Cover plate; 410. Heat dissipation unit;

[0044] 500, Connector; 600, Second mounting hole. Detailed Implementation

[0045] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0046] The following is for reference. Figures 1-4 The battery provided in the embodiments of this application is described. The battery includes a cell pack 100, a housing 200, a plurality of buffer limiting members 300 and a cover plate 400.

[0047] The housing 200 forms a receiving cavity 210 with an opening 211 for placing the battery cell assembly 100. A cover plate 400 is provided over the opening 211. That is, the battery cell assembly 100 can be placed into the housing 200 through the opening 211, which facilitates the installation and removal of the battery cell assembly 100 and provides protection for the battery cell assembly 100.

[0048] It should be noted that the size and shape of the opening 211 and the receiving cavity 210 can be designed according to actual needs, and this embodiment does not impose specific restrictions on them.

[0049] A buffer limiting member 300 is disposed within the receiving cavity 210, and each outer wall of the battery cell assembly 100 near the opening 211 is connected to at least one buffer limiting member 300. It should be noted that the number and specific distribution of the buffer limiting members 300 can be designed according to actual needs, and this embodiment does not impose specific limitations on this.

[0050] Understandably, on the one hand, when the battery is subjected to external impact, the buffer limiting member 300 can absorb some energy, reducing the direct impact on the cell assembly 100 and protecting the cell assembly 100 from damage; on the other hand, since the cell assembly 100 is directly installed in the housing 200 through the buffer limiting member 300, it not only restricts the position of the cell assembly 100 in the receiving cavity 210, reducing the possibility of displacement or shaking of the cell assembly 100 during battery use and movement, ensuring the stability and safety of the battery, but also realizes the modular design, allowing the cell assembly 100 to be directly integrated into the battery receiving cavity 210, reducing the complexity of design and process assembly, thereby accelerating the production rate and facilitating mass production. At the same time, it eliminates the need for overly complicated accessories, materials, and manufacturing processes, saving production and manufacturing costs, and also makes full use of the space in the receiving cavity 210, thereby effectively improving the energy density of the battery.

[0051] The battery provided according to the embodiments of this application reduces the complexity of design and process assembly, and effectively improves the energy density, reliability and service life of the battery.

[0052] In some embodiments, such as Figure 3 As shown, the battery cell assembly 100 includes a plurality of first buffer members 110, a plurality of battery cells 120, and two second buffer members 130. The plurality of first buffer members 110 are spaced apart along a first direction, and the first buffer members 110 at both ends are respectively connected to two buffer limiting members 300. A battery cell 120 is disposed between each pair of adjacent first buffer members 110. The two second buffer members 130 are spaced apart along a second direction, with the sides of the two second buffer members 130 that are close to each other connected to the plurality of battery cells 120, and the sides of the two second buffer members 130 that are far apart from each other connected to the two buffer limiting members 300. The first direction and the second direction intersect. Exemplarily, the battery cell 120 includes, but is not limited to, a pouch cell 120.

[0053] It should be noted that, in this embodiment, as Figure 2 As shown, the first direction is parallel to the up-down direction, and the second direction is parallel to the left-right direction.

[0054] Understandably, multiple battery cells 120 and multiple first buffer components 110 are first stacked alternately in the vertical direction to form a semi-finished product, and then second buffer components 130 are set on both sides of the semi-finished product to form a battery cell assembly 100. That is, the topmost first buffer component 110, the bottommost first buffer component 110, and the two second buffer components 130 are respectively connected to multiple buffer limiting components 300 to achieve modular assembly, reduce battery weight, and help improve energy density.

[0055] In some embodiments, such as Figure 3As shown, both the first buffer 110 and the second buffer 130 are made of EPE (Expandable Polyethylene) foam. The EPE foam is fixed to the battery cell 120 by gluing. It not only provides buffer protection, but also helps to reduce heat transfer between the battery cells 120 by utilizing its own heat insulation properties, thus ensuring heat dissipation.

[0056] In some embodiments, such as Figure 2 As shown, the orientation of the opening 211 intersects with the first direction and the second direction respectively, making the battery layout more flexible, better adaptable to different installation spaces, and giving the cell pack 100 better support in multiple directions.

[0057] It should be noted that, in conjunction with the above, in this embodiment, the orientation of the opening 211 is parallel to the front-rear direction. Of course, in other embodiments, the first, second, and third directions may also be parallel to other directions, and this embodiment does not impose specific limitations on this. For example, the opening 211 faces rearward, the cover plate 400 is disposed on the rear side of the housing 200, and the battery cell assembly 100 is pushed forward into the housing 200 from the opening 211.

[0058] In some embodiments, such as Figure 3 As shown, a circuit board 140 is also provided between the second buffer 130 and the battery cell 120, that is, the circuit board 140 is electrically connected to each battery cell 120 to realize the series and parallel connection between the battery cells 120 in the battery cell group 100.

[0059] In some embodiments, such as Figure 3 As shown, an epoxy resin plate 150 is also provided on the side of the second buffer 130 away from the battery cell 120 to provide insulation, heat insulation and structural support, thereby improving the overall structural strength of the battery cell assembly 100.

[0060] In some embodiments, such as Figure 3 As shown, the battery cell assembly 100 also includes a heating element 160, which is disposed on the side of the battery cell 120 near the opening 211. The heating element 160 includes, but is not limited to, a heating film.

[0061] It is understood that the heating element 160 is located on the rear side of the battery cell 120 and electrically connected to the circuit board 140, and is used to heat each battery cell 120 when used in a low-temperature environment, thereby ensuring the reliability of the battery cell assembly 100 and extending the service life of the battery cell assembly 100.

[0062] In some embodiments, such as Figure 1 and Figure 2As shown, the plurality of buffer limiting members 300 include two first buffer limiting members 310, a second buffer limiting member 320, and a third buffer limiting member 330. The two first buffer limiting members 310 are respectively connected to the two side walls of the battery cell assembly 100 that are arranged opposite to each other along the second direction. The second buffer limiting member 320 and the third buffer limiting member 330 are respectively connected to the two side walls of the battery cell assembly 100 that are arranged opposite to each other along the first direction. At least one of the first buffer limiting member 310, the second buffer limiting member 320, and the third buffer limiting member 330 forms at least one buffer space together with the inner wall of the receiving cavity 210. The buffer space is used to accommodate the expansion deformation of the battery cell assembly 100.

[0063] It should be noted that the number, shape, size, and whether the buffer space is connected to the receiving cavity 210 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0064] Understandably, the left and right sides of the cell assembly 100 are connected to two first buffer limiting members 310, and the top and bottom sides of the cell assembly 100 are connected to a third buffer limiting member 330 and a second buffer limiting member 320, thereby achieving battery modularization. Meanwhile, during charging and discharging, the battery inevitably undergoes volume changes. If the expanded cell 120 cannot release its expansion in time, it may be damaged. Therefore, by forming a buffer space to directly absorb the space for the cell 120 to release its volume expansion, the probability of damage to the cell assembly 100 is reduced while fixing the cell assembly 100, thus improving the safety and reliability of the battery.

[0065] In some embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, in order to limit the vertical and horizontal movement of the battery cell 120, there are multiple ways to set the multiple buffer limiters 300. The embodiments of this application will be specifically described from three different implementation perspectives below.

[0066] Firstly, multiple buffer limiting components 300 are all disposed on the inner side wall of the receiving cavity 210.

[0067] It should be noted that the inner wall of the receiving cavity 210 refers to the inner wall portion of the receiving cavity 210 near the opening 211.

[0068] It is understandable that, considering that the opening 211 is located on the rear side of the housing 200, that is, the two first buffer limiting members 310 are respectively protruding in the left and right directions on the left and right side walls of the receiving cavity 210, and the third buffer limiting member 330 and the second buffer limiting member 320 are respectively protruding in the up and down directions on the upper and lower side walls of the receiving cavity 210.

[0069] Secondly, the bottom wall of the receiving cavity 210 is provided with at least one buffer limiting member 300.

[0070] It should be noted that the bottom wall of the receiving cavity 210 refers to the inner wall portion of the receiving cavity 210 that is directly opposite the opening 211.

[0071] It is understandable that, considering that the opening 211 is located on the rear side of the housing 200, that is, the two first buffer limit members 310, the second buffer limit member 320 and the third buffer limit member 330 are all protruding in the front wall of the receiving cavity 210 in the front-rear direction.

[0072] Thirdly, the inner wall of the receiving cavity 210 is provided with at least one buffer limiting member 300, and the bottom wall of the receiving cavity 210 is provided with at least one buffer limiting member 300.

[0073] It is understood that a portion of the plurality of buffer limiting members 300 is disposed on the inner sidewall of the receiving cavity 210, and another portion of the plurality of buffer limiting members 300 is disposed on the inner front wall of the receiving cavity 210. For example, as shown... Figure 2 As shown, two first buffer limiting members 310 protrude from the left and right sides of the receiving cavity 210 in the left-right direction, respectively; a second buffer limiting member 320 protrudes from the lower side wall of the receiving cavity 210 in the up-down direction; and a third buffer limiting member 330 protrudes from the inner front wall of the receiving cavity 210 in the front-back direction.

[0074] In some embodiments, such as Figure 4 As shown, the buffer limiting member 300 includes a main body 301 and a plurality of connecting portions 302. The main body 301 is spaced apart from the inner wall of the receiving cavity 210. One end of the connecting portion 302 is connected to the main body 301 at an angle, and the other end extends toward the inner wall of the receiving cavity 210. At least one buffer space is formed between the main body 301, the connecting portion 302, and the inner wall of the receiving cavity 210. It should be noted that the number, shape, and specific distribution of the connecting portions 302 can be designed according to actual needs, and this embodiment does not impose specific limitations on this.

[0075] It is understandable that when the buffer limiting member 300 is disposed on the inner wall of the receiving cavity 210, the main body 301 and the corresponding inner wall of the receiving cavity 210 are spaced apart, and the connecting part 302 is disposed between the main body 301 and the corresponding inner wall of the receiving cavity 210; when the buffer limiting member 300 is disposed on the bottom wall of the receiving cavity 210, the main body 301 and the inner wall of the receiving cavity 210 are spaced apart, and the connecting part 302 is disposed between the main body 301 and the corresponding inner wall of the receiving cavity 210.

[0076] In this embodiment, as Figure 4As shown, the main body 301 of the first buffer limiting member 310 is spaced apart from the corresponding left and right inner walls of the receiving cavity 210. Multiple connecting portions 302 of the first buffer limiting member 310 are spaced apart in the vertical direction and located between the main body 301 of the first buffer limiting member 310 and the left (or right) wall of the receiving cavity 210. The main body 301 of the second buffer limiting member 320 is spaced apart from the corresponding lower wall of the receiving cavity 210. Multiple connecting portions 302 of the second buffer limiting member 320 are sequentially arranged along the circumference of the second buffer limiting member 320 and located between the main body 301 of the second buffer limiting member 320 and the lower wall of the receiving cavity 210. The main body 301 of the third buffer limiting member 330 is spaced apart from the corresponding upper wall of the receiving cavity 210. Multiple connecting portions 302 of the third buffer limiting member 330 are spaced apart in the left and right direction and located between the main body 301 of the third buffer limiting member 330 and the upper wall of the receiving cavity 210.

[0077] It should be noted that "multiple" refers to two or more. For example, in this embodiment, the first buffer limiting member 310 and the left side wall (or right side wall) of the receiving cavity 210 form two buffer spaces, the second buffer limiting member 320 and the lower side wall of the receiving cavity 210 form one buffer space, and the third buffer limiting member 330 and the upper side wall of the receiving cavity 210 form four buffer spaces.

[0078] In some embodiments, such as Figure 4 As shown, at least one end of the connecting portion 302 away from the main body 301 is connected to the inner wall of the receiving cavity 210, thereby increasing the overall structural strength of the battery.

[0079] In this embodiment, as Figure 4 As shown, the left and right ends of the connecting portion 302 of the first buffer limiting member 310 are connected to the left side wall (or right side wall) of the receiving cavity 210 and the main body 301 of the first buffer limiting member 310, respectively. The upper and lower ends of the connecting portion 302 of the second buffer limiting member 320 are connected to the main body 301 of the second buffer limiting member 320 and the lower side wall of the receiving cavity 210, respectively.

[0080] In some embodiments, such as Figure 4 As shown, at least one end of the connecting portion 302 away from the main body 301 is spaced apart from the inner wall of the receiving cavity 210 to increase the deformation range and improve the adaptability to the expansion and deformation of the battery cell 120.

[0081] In this embodiment, as Figure 4 As shown, the lower end of the connecting portion 302 of the third buffer limiting member 330 is connected to the main body 301, and the upper end of the connecting portion 302 of the third buffer limiting member 330 is spaced apart from the upper side wall of the receiving cavity 210.

[0082] In some embodiments, the buffer limiter 300 and the housing 200 are integrally formed to ensure the overall strength of the battery.

[0083] In some embodiments, a thermally conductive structural adhesive is provided between the buffer limiting member 300 and the cell assembly 100, thereby ensuring not only the tightness of the connection between the buffer limiting member 300 and the cell assembly 100, but also enabling rapid heat conduction. Furthermore, the inherent elastic properties of the thermally conductive structural adhesive can absorb the expansion force of the cell assembly 100 during charging and discharging, improving the reliability of battery use. The thermally conductive structural adhesive includes, but is not limited to, polyurethane structural adhesive, silicone-based thermally conductive adhesive, or acrylic structural adhesive.

[0084] It should be noted that thermally conductive structural adhesive is first applied to each buffer limiting member 300 and the inner front wall of the receiving cavity 210. Then, the battery cell assembly 100 is pushed into the receiving cavity 210 from the opening 211 until the front end face of the battery cell assembly 100 abuts against the inner front wall of the receiving cavity 210, and each buffer limiting member 300 abuts against the outer side wall of the battery cell assembly 100, so that the buffer limiting member 300 and the battery cell assembly 100 are bonded together by the thermally conductive structural adhesive. After the thermally conductive structural adhesive has cured, the cover plate 400 is installed at the opening 211.

[0085] In some embodiments, such as Figure 2 As shown, the cover plate 400 is provided with a heat dissipation section 410 to ensure that the heat generated by the battery cell 120 during operation can be effectively dissipated, thereby maintaining the normal operating temperature of the battery. Exemplarily, the heat dissipation section 410 includes, but is not limited to, a plurality of spaced heat dissipation fins that protrude from the cover plate 400.

[0086] In some embodiments, such as Figure 1 and Figure 2 As shown, the battery also includes two oppositely arranged mounting parts and connectors 500. The mounting parts are located inside the receiving cavity 210 and close to the opening 211. The two ends of the connectors 500 are detachably connected to the two mounting parts respectively. The portion of the cell assembly 100 facing the outer wall of the opening 211 abuts against the connectors 500.

[0087] Understandably, after the cell assembly 100 is pushed into the receiving cavity 210 and abuts against each buffer limiting member 300, it is connected through the mounting part and the connector 500, so that the front end face of the cell assembly 100 abuts against the inner front wall of the receiving cavity 210, and the rear end face of the cell assembly 100 abuts against the connector 500, thereby achieving all-round limiting of the cell assembly 100, improving the reliability of battery use, reducing thermal resistance, and increasing the heat dissipation capacity of the battery.

[0088] In some embodiments, such as Figure 4As shown, the connector 500 has a first mounting hole, and the mounting portion includes a second mounting hole 600 corresponding to the first mounting hole. The second mounting hole 600 is formed in the housing 200 to achieve a detachable connection between the connector 500 and the housing 200. Of course, in other embodiments, such as... Figure 4 As shown, the second mounting hole 600 can also be provided on the buffer limiting member 300 to realize the detachable connection between the connector 500 and the buffer limiting member 300. This embodiment does not impose specific restrictions on this.

[0089] In some embodiments, such as Figure 1 and Figure 2 As shown, the connector 500 extends vertically, and the two connectors 500 are spaced apart horizontally. Of course, in other embodiments, the connectors 500 also extend horizontally. It should be noted that the shape, number, and specific distribution of the connectors 500 can be designed according to actual needs, and this embodiment does not impose specific limitations on this.

[0090] This application also provides an energy storage system. The energy storage system includes the battery described above.

[0091] The energy storage system provided in the embodiments of this application realizes modular design, reduces the complexity of design and process assembly, saves space in the energy storage system, and effectively improves the overall storage capacity and energy density of the energy storage system.

[0092] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0093] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0094] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0095] In the description of this application, "multiple" means two or more.

[0096] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0097] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0099] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery, characterized in that, include: Battery cell assembly; A housing that forms an open receiving cavity for housing the battery cell assembly; Multiple buffer limiting members are disposed within the receiving cavity, and each outer side wall of the battery cell assembly near the opening is connected to at least one of the buffer limiting members; A cover plate is placed over the opening.

2. The battery according to claim 1, characterized in that, The inner wall of the receiving cavity is provided with at least one of the aforementioned buffer limiting members; and / or The bottom wall of the receiving cavity is provided with at least one of the aforementioned buffer limiting members.

3. The battery according to claim 2, characterized in that, The buffer limiting member includes: The main body is spaced apart from the inner wall corresponding to the receiving cavity; Multiple connecting parts are provided, one end of which is connected to the main body at an angle, and the other end extends toward the inner wall of the receiving cavity, and at least one buffer space is formed between the main body, the connecting parts and the inner wall of the receiving cavity.

4. The battery according to claim 3, characterized in that, At least a portion of the connecting portion, at one end away from the main body, is connected to the inner wall corresponding to the receiving cavity; and / or At least a portion of the connecting portion is spaced apart from the inner wall of the receiving cavity at one end away from the main body.

5. The battery according to any one of claims 1 to 4, characterized in that, The cover plate is provided with a heat dissipation section for cooling the battery cell assembly; and / or A thermally conductive structural adhesive is provided between the buffer limiting member and the battery cell assembly.

6. The battery according to any one of claims 1 to 4, characterized in that, Also includes: Two mounting portions are arranged opposite each other, the mounting portions being located within the receiving cavity and close to the opening; A connector, the two ends of which are detachably connected to two mounting parts respectively, and the outer wall portion of the battery cell assembly facing the opening abuts against the connector.

7. The battery according to any one of claims 1 to 4, characterized in that, The battery cell assembly includes: Multiple first buffer members are spaced apart along a first direction, and the first buffer members at both ends are respectively connected to the two buffer limiting members; Multiple battery cells are provided, with one battery cell disposed between each two adjacent first buffer components; Two second buffer members are spaced apart along a second direction. The sides of the two second buffer members that are close to each other are respectively connected to a plurality of said battery cells, and the sides of the two second buffer members that are far apart from each other are respectively connected to two said buffer limiting members. The first direction and the second direction intersect.

8. The battery according to claim 7, characterized in that, The orientation of the opening intersects with the first direction and the second direction, respectively.

9. The battery according to claim 7, characterized in that, The battery cell assembly also includes: A heating element is disposed on the side of the battery cell near the opening.

10. An energy storage system, characterized in that, Includes the battery as described in any one of claims 1 to 9.

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