Battery and vehicle

Abstract

The utility model provides a battery and a vehicle, and relates to the technical field of batteries. The battery provided by the utility model comprises two battery monomer groups, each battery monomer group comprises at least two battery monomers, the battery monomers in the same battery monomer group are sequentially connected in series and have the same electrode orientation, and the battery monomers in different battery monomer groups have different electrode orientations; in the first direction, the battery monomers of the two battery monomer groups are arranged in a staggered manner, and the ends, close to each other, of the two battery monomer groups in the first direction are detachably and electrically connected. The battery provided by the utility model is used for supplying power, and the safety of the battery can be improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery and a vehicle. Background Technology

[0002] When performing battery repairs or other operations, personnel may come into contact with both the positive and negative terminals simultaneously. In batteries using this technology, it is difficult to guarantee personnel safety when both terminals are in contact at the same time, resulting in poor battery safety. Utility Model Content

[0003] This application provides a battery and a vehicle that can improve battery safety.

[0004] In a first aspect, this application provides a battery comprising two battery cell groups, each battery cell group comprising at least two battery cells, wherein the battery cells in the same battery cell group are connected in series and the electrodes are oriented in the same direction, and the electrodes of the battery cells in different battery cell groups are oriented in different directions; along a first direction, the battery cells of the two battery cell groups are arranged alternately, and the ends of the two battery cell groups that are close to each other along the first direction are detachably electrically connected.

[0005] The battery provided in this application has two battery cells detachably electrically connected at their ends, which are close to each other along a first direction. This disconnects the positive and negative output terminals of the battery, preventing the formation of a circuit even if a person simultaneously touches both terminals, thus improving personnel safety. Therefore, the battery provided in this application enhances battery safety.

[0006] In conjunction with the first aspect, in some possible implementations, the battery also includes an adapter assembly, which includes a first adapter and two second adapters. The two second adapters are configured to correspond one-to-one with two battery cell groups. The first end of the second adapter is electrically connected to one end of the corresponding battery cell group. The second ends of the two second adapters are spaced apart and are detachably connected to the first adapter, so that the ends of the two battery cell groups that are close to each other are detachably electrically connected.

[0007] In this way, the first adapter is detachably connected to the second end of each of the two second adapters, so that the ends of the two battery cell groups that are close to each other can be detachably electrically connected. This allows the two battery cell groups to be disconnected or connected by attaching or removing the first adapter from the second adapter, without easily damaging the electrodes of the battery cells.

[0008] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the battery also includes an end plate, which is disposed opposite to the battery cell group along the first direction, and the second end of the second adapter, the first adapter and the end plate are connected by fasteners.

[0009] By connecting the second end of the second adapter, the first adapter, and the end plate with fasteners, the connection between the first and second adapters is convenient and reliable. The first and second adapters can be supported by the end plate, which helps improve the stress distribution on both components.

[0010] In combination with the first aspect and the above implementation, in some possible implementations, the battery also includes a side plate, which is connected to the end plate and together surrounds the battery cell; the second end of the second adapter extends to one side of the end plate in the second direction, and the second direction, the first direction and the thickness direction of the side plate are perpendicular to each other.

[0011] By extending the second end of the second adapter to one side of the end plate in the second direction, that is, by setting the side plate and the fastener on adjacent sides of the end plate respectively, the personnel are less likely to be obstructed by the side plate during the fastener disassembly and assembly process, which facilitates personnel operation.

[0012] In combination with the first aspect and the above-described implementation, in some possible implementations, the end plate is disposed on one side of the side plate along the thickness direction; the second adapter includes a first extension section and a second extension section. The first end of the first extension section is connected to an electrode, and the second end extends along a first direction to the space between the end plate and the side plate; the first end of the second extension section is connected to the second end of the first extension section, and the second end of the second extension section extends along the edge of the end plate to one side of the end plate in a second direction, and is connected to a fastener.

[0013] In this way, along the thickness direction of the side plate, the area covered by the side plate for the second adapter is relatively large, and the side plate can provide sufficient protection for the second adapter, which is beneficial to improving the reliability of the battery.

[0014] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, a crack-stopping groove is provided at the second end of the first extension segment.

[0015] This reduces stress concentration at the connection between the first and second extension sections, thus improving the reliability of the second adapter.

[0016] In combination with the first aspect and the above implementation, in some possible implementations, the battery further includes an adapter protective cover, which is fixed relative to the end plate. Along the extension direction of the fastener, the end face of one end of the end plate is disposed opposite to the adapter protective cover, and the first adapter is located between the end plate and the adapter protective cover.

[0017] In this way, the end plate and the adapter protective cover together form a space for accommodating the first adapter. The end plate and the adapter protective cover can provide better protection for the first adapter, which is beneficial to improving the safety and reliability of the battery.

[0018] In combination with the first aspect and the above implementation, in some possible implementations, the battery also includes a side plate, an adapter protective cover, and a side plate, one of which has a mounting groove and the other has a mounting part adapted to the mounting groove. The mounting groove can slide along the mounting part, and the groove wall of the mounting groove clamps the mounting part. One end of the mounting groove has a mounting opening, and the mounting part can extend into the mounting groove through the mounting opening.

[0019] In this way, by allowing the mounting part to extend into the mounting groove through the mounting opening, and the mounting groove to slide along the mounting part, the installation of the mounting part within the mounting groove is more convenient, thereby facilitating the installation between the side plate and the adapter protective cover. After the mounting part enters the mounting groove, the groove wall clamps the mounting part, maintaining the relative position between the adapter protective cover and the side plate, ensuring a secure installation of the adapter protective cover and the side plate.

[0020] In combination with the first aspect and the above implementation, in some possible implementations, along the second direction, the end face of the first end of the end plate is disposed opposite to the adapter protective cover, and the second direction, the thickness direction of the side plate and the thickness direction of the end plate are perpendicular to each other; one of the mounting part and the mounting groove is disposed on the surface of the side plate near the inside of the battery.

[0021] By placing either the mounting section or the mounting groove on the surface of the side plate closer to the inside of the battery, the space inside the battery is fully utilized, which helps to improve the compactness of the structure and reduce the size of the battery.

[0022] Combining the first aspect and the above-described implementation methods, in some possible implementation methods, the mounting slot is located on one side of the end plate along the second direction.

[0023] In this way, the portion of the adapter protective cover that faces the first end of the end plate is mounted on the side plate via the mounting groove and mounting part, making the receiving space enclosed by the adapter protective cover and the end plate more stable. This receiving space accommodates the first adapter and can provide good protection for the first adapter. Moreover, the mounting groove is located on one side of the end plate along the second direction, which also helps to reduce the length of the adapter protective cover in the thickness direction of the end plate, thus improving the compactness of the structure.

[0024] Combining the first aspect and the above implementation methods, in some possible implementation methods, the mounting groove extends along the thickness direction of the end plate.

[0025] The side plate extends a long distance in the thickness direction of the end plate, allowing the mounting groove to extend along the thickness direction of the end plate. The length of the side plate in the thickness direction of the end plate is fully utilized, which helps to improve the compactness of the structure and can reduce the length of the side plate in its own thickness direction as well as its length in the first direction.

[0026] Secondly, this application provides an electrical device, which includes an electrical body and a battery provided in the first aspect and the above implementation, the battery being used to supply power to the electrical body.

[0027] The electrical equipment provided in this application, including the side plate provided in the first aspect of this application and the above-described implementation, can achieve the same technical effect, namely, improving battery safety. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a battery provided in an embodiment of this application;

[0030] Figure 2 This is one of the exploded views of a battery provided in the embodiments of this application;

[0031] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0032] Figure 4 This is a schematic diagram of the connection between the first adapter and the second adapter in an embodiment of this application;

[0033] Figure 5 This is an exploded view of the connection between the first adapter and the second adapter in an embodiment of this application;

[0034] Figure 6 This is a schematic diagram of the series connection of individual battery cells in the embodiments of this application;

[0035] Figure 7 This is a schematic diagram of the bus structure in an embodiment of this application;

[0036] Figure 8 This is one of the structural schematic diagrams of the acquisition component in the embodiments of this application;

[0037] Figure 9 This is the second schematic diagram of the structure of the acquisition component in the embodiments of this application;

[0038] Figure 10 This is an exploded view of the connection between the adapter protective cover and the side plate in an embodiment of this application;

[0039] Figure 11 This is one of the schematic diagrams showing the relative positional relationship between the adapter protective cover and the end plate in the embodiments of this application;

[0040] Figure 12 This is the second schematic diagram showing the relative positional relationship between the adapter protective cover and the end plate in the embodiments of this application;

[0041] Figure 13 This is a schematic diagram of the structure of the second buffer between two adjacent batteries in an embodiment of this application;

[0042] Figure 14 This is the second exploded view of a battery in the embodiments of this application;

[0043] Figure 15 This is an exploded view of the connection between the output terminal, the data acquisition unit, and the end plate.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Battery cell; 2. Busbar; 21. Bending section; 3. Adapter assembly; 31. First adapter; 32. Second adapter; 321. First extension; 3211. Crack prevention groove; 322. Second extension; 33. Fastener; 4. Housing; 41. End plate; 411. Housing; 412. Support frame; 413. Metal insert; 42. Side plate; 421. Mounting part; 43. Sub-cover; 44. Adapter protective cover; 441. Mounting groove; 4411. Mounting port; 442. Long groove; 45. Output electrode protective cover; 5. Strap; 6. Acquisition assembly; 61. Flexible circuit board; 62. Acquisition device; 63. First buffer; 7. Output electrode; 8. Output busbar; 81. First extension; 82. Second extension; 9. Second buffer. Detailed Implementation

[0046] The technical solutions in this application will now be described clearly and in detail with reference to the accompanying drawings.

[0047] Unless otherwise defined, 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 limit this application.

[0048] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0049] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0050] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0051] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0052] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "abutment" and "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting objects with essentially no interaction force, or contact between two contacting objects with interaction force.

[0053] This application provides a vehicle including a battery. The vehicle provided can be of various types, such as a truck, bus, sedan, SUV, or sport utility vehicle (SUV). Please refer to... Figure 1 and Figure 2 The battery provided in this application embodiment can be of various types, for example, it can be a battery module, a battery pack or an energy storage battery, etc.

[0054] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5The battery provided in this application includes two battery cell groups, each battery cell group including at least two battery cells 1. The battery cells 1 within the same battery cell group are connected in series with their electrodes facing the same direction. The battery cells 1 in different battery cell groups have different electrode orientations. Along a first direction, the battery cells 1 of the two battery cell groups are arranged alternately, and the ends of the two battery cell groups that are close to each other along the first direction are detachably electrically connected. By making the ends of the two battery cell groups that are close to each other along the first direction detachably electrically connected, the positive output terminal 7 and the negative output terminal 7 of the battery are disconnected. Even if a person simultaneously touches both the positive and negative output terminals 7, a circuit will not be formed, which is beneficial to personnel safety. Therefore, the battery provided in this application can improve battery safety.

[0055] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In this embodiment, the battery cell 1 can be a secondary battery. After the secondary battery is discharged, the active materials can be activated by charging so that it can continue to be used. The battery cell 1 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this embodiment is not limited to this.

[0056] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In this application embodiment, the battery cell 1 can be a prismatic battery, a cylindrical battery, or a pouch battery, etc., and this application embodiment is not limited to this.

[0057] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It should be explained that in the embodiments of this application, the orientation of the electrode is different from the first direction. Generally, in some embodiments of this application, the orientation of the electrode is perpendicular to the first direction. For example, in some embodiments of this application, the battery cell 1 is a prismatic battery, and the first direction is the thickness direction of the battery cell 1. Of course, in some embodiments of this application, the orientation of the electrode is not perpendicular to the first direction, for example, the angle between the orientation of the electrode and the first direction is 30°, 60°, or 75°.

[0058] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It should be noted that in the embodiments of this application, the orientation of the electrode is the orientation of the surface of the battery cell 1 on the side where the electrode is provided, which can be referred to as the third orientation in the figure.

[0059] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the electrodes of battery cells 1 in different battery cell groups are oriented in opposite directions. This means that adjacent battery cells 1 are oriented in opposite directions, and these two adjacent battery cells 1 belong to two different battery groups. Since heat generation at the electrodes is relatively severe, orienteding the electrodes of adjacent battery cells 1 in opposite directions—that is, along a third direction—means that the electrodes of adjacent battery cells 1 are located at opposite ends of the battery cell 1, and the electrodes of adjacent battery cells 1 are far apart, this helps to achieve more even heat generation in different areas of the battery, thus reducing the phenomenon of excessively high temperatures.

[0060] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the electrodes of the battery cell 1 in the battery cell assembly are oriented horizontally. This results in better stress distribution on the electrodes compared to the downward orientation of the electrodes in the battery cell 1, making them less susceptible to damage.

[0061] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 Of course, in some embodiments of this application, the electrode orientation of the battery cell 1 in different battery cell groups can also be at other angles, such as 60° or 90°.

[0062] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It is understood that in the embodiments of this application, the battery cells 1 within the same battery cell group are connected in series sequentially, that is, along the first direction, the battery cells 1 within the same battery cell group are connected in series sequentially. In some embodiments of this application, along the first direction, two adjacent battery cells 1 within the same battery cell group can be connected in series via a busbar 2. The busbar 2 has high conductivity, which is beneficial to improving battery performance.

[0063] Please refer to Figure 2 , Figure 6 and Figure 7In some embodiments of this application, the battery cell 1 is a prismatic battery with the positive and negative electrodes facing the same direction. For ease of understanding, one of two adjacent battery cells 1 in the same battery cell group is referred to as the first battery cell, and the other as the second battery cell. The positive electrode of the first battery cell and the negative electrode of the second battery cell are arranged along a first direction, and the negative electrode of the first battery cell and the positive electrode of the second battery cell are also arranged along a first direction. The busbar 2 can be connected between the positive electrode of the first battery cell and the negative electrode of the second battery cell, or it can be connected between the negative electrode of the first battery cell and the positive electrode of the second battery cell, so that the first battery cell and the second battery cell are connected in series. This is beneficial for having a shorter extension distance of the busbar 2 and for reducing interference between multiple busbars 2, resulting in a more compact battery structure and higher reliability.

[0064] Please refer to Figure 2 , Figure 6 and Figure 7 In some embodiments of this application, the busbar 2 has a bent portion 21 that bends along the direction of the electrodes, or it may have a bent portion 21 that bends in the opposite direction of the electrodes. The bent portion 21 is located between the first battery cell and the second battery cell. In this way, the bent portion 21 can absorb the expansion displacement of the battery cell 1, which is beneficial to improving the stress condition of the busbar 2 and improving the reliability of the busbar 2.

[0065] Please refer to Figure 2 , Figure 6 and Figure 7 In some embodiments of this application, the number of bent portions 21 can be at least two, and the multiple bent portions 21 are arranged at intervals along the first direction. This is beneficial to further improve the stress condition of the busbar 2 and improve the reliability of the busbar 2. Exemplarily, in some embodiments of this application, the number of bent portions 21 is two, one bent portion 21 is disposed at the end of the first battery cell near the second battery cell, and the other bent portion 21 is disposed at the end of the second battery cell near the first battery cell.

[0066] Please refer to Figure 2 , Figure 8 and Figure 9 In some embodiments of this application, the busbar 2 can be connected to the acquisition component 6. The acquisition component 6 includes an acquisition device 62 and a flexible circuit board 61. The flexible circuit board 61 is connected to the busbar 2, and the acquisition device 62 is connected to the flexible circuit board 61. The acquisition device 62 acquires voltage information and temperature information of the battery cell 1, etc.

[0067] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5It should be explained that, in this embodiment of the application, the two battery cell groups are detachably electrically connected at their ends that are close to each other along the first direction, so that the two battery cell groups are connected in series.

[0068] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 To facilitate understanding, the following explanation describes the detachable electrical connection of two battery cell groups at their ends, which are close to each other along a first direction. One battery cell group includes a first end cell, located on the outermost side of all battery cells 1 in that group along the first direction. The other battery cell group includes a second end cell, also located on the outermost side of all battery cells 1 in that group along the first direction. The first and second end cells are arranged adjacent to each other, with one of them located on the outermost side of all battery cells 1 in both groups along the first direction. In other words, the first and second end cells represent the ends of the two battery cell groups that are close to each other along the first direction. The first and second end cells are detachably connected in series, meaning the ends of the two battery cell groups that are close to each other along the first direction are detachably electrically connected.

[0069] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It should be explained that, in the embodiments of this application, the two battery cell groups are detachably electrically connected at their ends that are close to each other along the first direction. That is, the electrical connection between the two battery cell groups at their ends that are close to each other along the first direction can be detached. In the detached state, the series connection between the two battery cell groups is broken.

[0070] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It is understood that in this embodiment of the application, the battery cells 1 within the same battery cell group are connected in series, and the ends of two battery cell groups that are close to each other along the first direction are detachably connected. This results in the positive output terminal 7 and the negative output terminal 7 of the battery being located at the other ends of the two battery cell groups that are close to each other along the first direction, with the positive output terminal 7 and the negative output terminal 7 being relatively close. By making the ends of two battery cell groups that are close to each other along the first direction detachably connected, the positive output terminal 7 and the negative output terminal 7 of the battery are disconnected. Even if a person touches the positive output terminal 7 and the negative output terminal 7 simultaneously, a circuit will not be formed, which is beneficial to the safety of personnel.

[0071] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 Furthermore, it is understandable that by detachably connecting the two battery cell packs at their ends close to each other along the first direction, the electrical connection between the two battery packs can be broken. The break point and the output terminal 7 are located at opposite ends of the battery packs along the first direction, a considerable distance apart, making it less likely for personnel to accidentally touch them simultaneously, thus enhancing safety. Additionally, after the electrical connection between the two battery cell packs is broken, the voltages of the two battery packs are relatively close, reducing the likelihood of one battery pack having a low voltage while the other has an excessively high voltage, which could pose a risk. Therefore, detachably connecting the two battery cell packs at their ends close to each other along the first direction helps improve battery safety.

[0072] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the battery further includes an adapter assembly 3. The adapter assembly 3 includes a first adapter 31 and two second adapters 32. The two second adapters 32 are configured one-to-one with two battery cell groups. The first end of the second adapter 32 is electrically connected to one end of the corresponding battery cell. The second ends of the two second adapters 32 are spaced apart and are detachably connected to the first adapter 31, so that the ends of the two battery cell groups that are close to each other are detachably electrically connected. In this way, the first adapter 31 is detachably connected to the second ends of the two second adapters 32 respectively, so that the ends of the two battery cell groups that are close to each other are detachably electrically connected. This allows the operation of disconnecting or connecting the two battery cell groups to be performed by removing and installing the first adapter 31 on the second adapter 32, without easily damaging the electrodes of the battery cell 1.

[0073] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It should be explained that, in this embodiment of the application, the second ends of the two second adapters 32 are spaced apart, so that when the first adapter 31 is disconnected from the two second adapters 32, the conduction between the two second adapters 32 is broken.

[0074] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5In some embodiments of this application, the first adapter 31 may have a plate-like structure, extending along the outer surfaces of the two battery cell groups. Similarly, the second adapter 32 may also have a plate-like structure, extending along the outer surfaces of the two battery cell groups. This results in a larger adapter assembly 3 with higher conductivity. The extension of the adapter assembly 3 along the outer surfaces of the two battery cell groups also contributes to improving the compactness of the battery structure.

[0075] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the battery further includes an end plate 41. Along a first direction, the end plate 41 is disposed opposite to the battery cell assembly. The second end of the second adapter 32, the first adapter 31, and the end plate 41 are connected by fasteners 33. By connecting the second end of the second adapter 32, the first adapter 31, and the end plate 41 with fasteners 33, the connection between the first adapter 31 and the second adapter 32 is more convenient and reliable. The first adapter 31 and the second adapter 32 can be supported by the end plate 41, which helps improve the stress distribution on the first adapter 31 and the second adapter 32.

[0076] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It should be explained that, in this embodiment of the application, the end plate 41 has the same meaning as commonly understood by those skilled in the art. In this embodiment, the battery is a battery module, and the end plate 41 belongs to the outer casing 4 of the battery module. Generally, the outer casing 4 of the battery module includes two side plates 42 and two end plates 41. The two side plates 42 are arranged opposite to each other, and the two end plates 41 are arranged opposite to each other. The two side plates 42 and the two end plates 41 are connected to form a frame, and the frame surrounds the two battery packs, that is, the two battery packs are arranged within the space enclosed by the frame.

[0077] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It is understood that in this embodiment of the application, the thickness direction of the end plate 41 is the first direction.

[0078] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the thickness direction of the side plate 42 is parallel to a third direction, and the electrodes face the side plate 42. In this way, the side plate 42 covers the electrodes, which can protect the electrodes and improve the safety of the battery.

[0079] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the outer casing 4 also includes a cover plate, the thickness direction of which is parallel to the second direction. The second direction, the first direction, and the thickness direction of the side plate 42 are perpendicular to each other. Along the second direction, the cover plate closes the opening at one end of the frame in the second direction. The cover plate and the frame together form a cavity for accommodating two battery packs.

[0080] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the cover plate can be integrally formed with the side plate 42. Furthermore, in some embodiments of this application, the cover plate can be a bent portion located at the edge of the side plate 42, thus facilitating its manufacturing. In some embodiments of this application, the side plate 42 includes two sub-cover plates 43, which are separate structures. Each sub-cover plate 43 is integrally formed with one of the two side plates 42, and the two sub-cover plates 43 are spliced ​​together to jointly close the opening at one end of the frame in the second direction. This further facilitates the manufacturing of the cover plate.

[0081] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 Of course, in some embodiments of this application, the cover plate and the side plate 42 can also be separate structures, and the cover plate and the side plate 42 can be detachably connected.

[0082] Please refer to Figure 2 , Figure 8 and Figure 9 In some embodiments of this application, a flexible circuit board 61 is disposed between the cover plate and the battery cell assembly along the thickness direction of the cover plate. The surface of the flexible circuit board 61 closest to the battery cell assembly is bonded to the battery cell 1, and a first buffer 63 is disposed between the surface of the flexible circuit board 61 furthest from the battery cell assembly and the cover plate. In this way, the installation of the flexible circuit board 61 is more stable and less prone to damage. The first buffer 63 in the embodiments of this application can have various implementation forms. For example, it can be foam, sponge, foam plastic, etc.

[0083] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the surface of the cover plate facing the inside of the battery is flat along the thickness direction. This facilitates a tighter fit between the cover plate and the first buffer member 63.

[0084] Please refer to Figure 2 , Figure 3, Figure 4 and Figure 5 In some embodiments of this application, the battery module may further include a strap 5, which has the same meaning as commonly understood by those skilled in the art to which this application pertains. Along the extension direction of the frame, the strap 5 is disposed around the frame and is capable of applying a force toward the inwards of the frame to the end plate 41 and the side plate 42; this will not be described in detail further in this application.

[0085] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It should be explained that, in this embodiment of the application, the second end of the second adapter 32, the first adapter 31 and the end plate 41 are connected by a fastener 33, that is, the fastener 33 is inserted between the second end of the second adapter 32, the first adapter 31 and the end plate 41, so as to fix the second end of the second adapter 32, the first adapter 31 and the end plate 41.

[0086] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, a metal insert 413 is embedded in the end plate 41, and a first connecting hole is formed on the metal insert 413. A fastener 33 passes through the second end of the second adapter 32, the first adapter 31, and the first connecting hole, so as to fix the second end of the second adapter 32, the first adapter 31, and the end plate 41. This helps to improve the reliability of the fastener 33 installed on the end plate 41.

[0087] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It is understood that in this embodiment of the application, the second ends of the two second adapters 32 are spaced apart, and the second ends of the two second adapters 32 are respectively mounted on the end plate 41 by different fasteners 33.

[0088] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the second ends of the two second adapters 32 are located on the same side of the end plate 41. Thus, the fasteners 33 for mounting the second ends of the two second adapters 32 pass through the side of the end plate 41 on the same side, facilitating the installation and removal of the fasteners 33.

[0089] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5In some embodiments of this application, the second end of the second adapter 32 extends to one side of the end plate 41 in the second direction, and the second direction, the first direction, and the thickness direction of the side plate 42 are perpendicular to each other. By extending the second end of the second adapter 32 to one side of the end plate 41 in the second direction, that is, the side plate 42 and the fastener 33 are respectively disposed on adjacent sides of the end plate 41, the personnel are less likely to be obstructed by the side plate 42 during the installation and removal of the fastener 33, which facilitates personnel operation.

[0090] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It is understood that in this embodiment of the application, the fastener 33 passes through the end face of one end of the end plate 41 along the second direction. Generally, in some embodiments of this application, the second direction is a vertical direction, the second end of the second adapter 32 extends to the upper side of the end plate 41, and the fastener 33 passes through the upper side of the end plate 41. In this way, during the process of assembling and disassembling the fastener 33, personnel are less likely to be obstructed by the side plate 42, which facilitates personnel operation.

[0091] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the end plate 41 is disposed on one side of the side plate 42 along the thickness direction; the second adapter 32 includes a first extension 321 and a second extension 322. The first end of the first extension 321 is connected to an electrode, and the second end extends along a first direction to the space between the end plate 41 and the side plate 42; the first end of the second extension 322 is connected to the second end of the first extension 321, and the second end of the second extension 322 extends along the edge of the end plate 41 to one side of the end plate 41 in a second direction, and is connected to a fastener 33. Thus, along the thickness direction of the side plate 42, the area covered by the side plate 42 for the second adapter 32 is relatively large, and the side plate 42 can provide sufficient protection for the second adapter 32, which is beneficial to improving the reliability of the battery.

[0092] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It should be explained that, in the embodiments of this application, the first end of the first extension segment 321 is connected to the electrode, and the second end extends along the first direction to the space between the end plate 41 and the side plate 42. This means that the first extension segment 321 extends along the first direction. Along the extension direction of the first extension segment 321, the first end of the first extension segment 321 is connected to the electrode, and the second end is located between the side plate 42 and the end plate 41. The first extension segment 321 being located between the side plate 42 and the end plate 41 means that the side plate 42, the second end of the first extension segment 321, and the end plate 41 are arranged sequentially along the thickness direction of the side plate 42.

[0093] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 It should be explained that, in this embodiment of the application, the first end of the second extension segment 322 is connected to the second end of the first extension segment 321, and the second end of the second extension segment 322 extends along the edge of the end plate 41 to one side of the end plate 41 in the second direction and is connected to the fastener 33. This means that the second extension segment 322 extends along the edge of the end plate 41, and the second extension segment 322 is disposed opposite to the side of the end plate 41 extending in the thickness direction. Along the extension direction of the second extension segment 322, the first end of the second extension segment 322 is connected to the second end of the first extension segment 321, the second end of the second extension segment 322 is located on one side of the end plate 41 in the second direction, and the second end of the second extension segment 322 is connected to the fastener 33.

[0094] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the second end of the first extension 321 abuts against the end plate 41 and the side plate 42 on opposite sides along the thickness direction of the side plate 42, respectively. In this way, the second end of the first extension 321 is clamped by the side plate 42 and the end plate 41, and the first extension 321 is installed with high stability.

[0095] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the electrodes face the side plate 42, and the side plate 42 covers the first extension section 321 along the thickness direction of the side plate 42. This allows the side plate 42 to cover a larger area of ​​the second adapter 32, providing sufficient protection for the second adapter 32 and improving battery reliability. It is understood that in the embodiments of this application, along the thickness direction of the side plate 42, the battery pack and the side plate 42 are located on opposite sides of the first extension section 321, and the end plate 41 and the side plate 42 are also located on opposite sides of the first extension section 321.

[0096] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the side plate 42 is made of plastic. This insulates the side plate 42 from the second adapter 32, which helps improve battery reliability.

[0097] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5In some embodiments of this application, the second extension 322 abuts against the end plate 41. This allows the second extension 322 to be supported by the end plate 41, which helps improve the reliability of the second connector.

[0098] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the end plate 41 is made of plastic. This insulates the end plate 41 from the adapter assembly 3, which helps improve battery reliability.

[0099] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the end plate 41 includes a housing 411 and a support frame 412. The housing 411 is made of plastic and has a mounting cavity, with fasteners 33 passing through it. The support frame 412 is made of metal and is disposed within the mounting cavity, with the housing 411 isolating the support frame 412 from the adapter assembly 3. Thus, the metal material of the support frame 412 provides high strength, enabling the end plate 41 to withstand a larger load, which is beneficial for improving the strength of the battery module. The plastic material of the housing 411 provides strong heat insulation, making it difficult for heat released by the battery cell 1 to be transferred to the external environment through the end plate 41. Furthermore, the housing 411 isolates the support frame 412 from the adapter assembly 3, ensuring insulation between the support frame 412 and the adapter assembly 3, which is beneficial for improving the safety of the end plate 41.

[0100] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the housing 411 is arranged around the support frame 412. Thus, in a direction perpendicular to the first direction, the housing 411 and the support frame 412 are mutually positioned, making it less prone to displacement and improving the protection effect of the end plate 41 on the battery cell 1. Furthermore, the housing 411's arrangement around the support frame 412 isolates the support frame 412 from the second extension 322, and insulates the support frame 412 from the second extension 322, thereby improving the safety of the end plate 41.

[0101] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5To facilitate understanding, the following explanation is given regarding the arrangement of the housing 411 surrounding the support frame 412. The housing 411 is arranged around the support frame 412 such that at least a portion of the housing 411 forms a closed annular structure. The inner circumferential surface of the annular structure is arranged opposite to the support frame 412, and the direction of the relative arrangement is perpendicular to the first direction.

[0102] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, the battery includes a strap 5. Along the extension direction of the frame, the strap 5 is disposed around the frame and can apply a force toward the inwards of the end plate 41 and the side plate 42. It is understood that, along the thickness direction of the side plate 42, the side plate 42 covers a first extension 321, and a second extension 322 extends along the edge of the end plate 41, such that the side plate 42 and the end plate 41 isolate the strap 5 from the second adapter 32, thus insulating the strap 5 from the second adapter 32 and improving battery reliability.

[0103] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, a crack-resistant groove 3211 is provided at the second end of the first extension 321. This reduces stress concentration at the connection between the first extension 321 and the second extension 322, thereby improving the reliability of the second adapter 32.

[0104] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the outer casing 4 further includes an adapter protective cover 44, which is fixed relative to the end plate 41. Along the extending direction of the fastener 33, one end face of the end plate 41 is disposed opposite to the adapter protective cover 44, and the first adapter 31 is located between the end plate 41 and the adapter protective cover 44. In this way, the end plate 41 and the adapter protective cover 44 together form a receiving space for accommodating the first adapter 31, which can better protect the first adapter 31 and improve the safety and reliability of the battery.

[0105] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12In some embodiments of this application, the battery further includes a side plate 42, an adapter protective cover 44, and a mounting groove 441 formed in one of the side plate 42 and a mounting portion 421 adapted to the mounting groove 441. The mounting groove 441 can slide along the mounting portion 421, and the groove wall of the mounting groove 441 clamps the mounting portion 421. One end of the mounting groove 441 has a mounting opening 4411, through which the mounting portion 421 can extend into the mounting groove 441. Thus, by allowing the mounting portion 421 to extend into the mounting groove 441 through the mounting opening 4411, and by allowing the mounting groove 441 to slide along the mounting portion 421, the installation of the mounting portion 421 within the mounting groove 441 is more convenient, thereby facilitating the installation between the side plate 42 and the adapter protective cover 44. After the mounting part 421 enters the mounting groove 441, the groove wall of the mounting groove 441 clamps the mounting part 421, which can maintain the relative position between the adapter protective cover 44 and the side plate 42, so that the adapter protective cover 44 and the side plate 42 are securely installed.

[0106] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 It is understood that in the embodiments of this application, the adapter protective cover 44 may have a mounting groove 441 formed on it and the side plate 42 may have a mounting portion 421 formed on it; or the adapter protective cover 44 may have a mounting portion 421 formed on it and the side plate 42 may have a mounting groove 441 formed on it.

[0107] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 It is understood that in this embodiment, the mounting groove 441 can slide along the mounting portion 421, and the direction in which the mounting groove 441 slides along the mounting portion 421 is the extending direction of the mounting groove 441. It should be noted that the extending direction of the mounting groove 441 is perpendicular to the depth direction of the mounting groove 441.

[0108] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 It is understood that in this embodiment of the application, one end of the mounting groove 441 extends through the side plate 42 along the extension direction of the mounting groove 441 to form a mounting opening 4411.

[0109] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12It is understood that in the embodiments of this application, the groove wall of the mounting groove 441 clamps the mounting part 421, that is, along at least one direction perpendicular to the extending direction of the mounting groove 441, the side surfaces of the mounting part 421 on opposite sides abut against the groove wall of the mounting groove 441. Exemplarily, in some embodiments of this application, along the width direction of the mounting groove 441, the side surfaces of the mounting part 421 on opposite sides abut against the groove wall of the mounting groove 441, that is, the groove wall of the mounting groove 441 clamps the mounting part 421 along the width direction of the mounting groove 441. It should be explained that the extending direction, the width direction, and the depth direction of the mounting groove 441 are all perpendicular to each other.

[0110] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the mounting part 421 and the mounting groove 441 are interference-fitted. This improves the stability of the mounting part 421 and the mounting groove 441. Along the extending direction of the mounting groove 441, the adapter protective cover 44 and the side plate 42 are mutually restrained by the friction between the groove wall of the mounting groove 441 and the mounting part 421, making the installation of the adapter protective cover 44 on the side plate 42 more stable.

[0111] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the length of the mounting portion 421 is the same as that of the mounting groove 441 along the extending direction of the mounting groove 441. This results in a larger mating length between the mounting portion 421 and the mounting groove 441, which is beneficial for improving the stability of the connection between the mounting portion 421 and the mounting groove 441.

[0112] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 It is understood that, in the embodiment of this application, during the process of installing the adapter protective cover 44 on the side plate 42, the mounting part 421 is first allowed to enter the mounting groove 441 through the mounting port 4411, and then the mounting part 421 and the mounting groove 441 continue to slide relative to each other. The direction in which the mounting groove 441 slides relative to the mounting part 421 is the opposite direction of the opening, and the direction in which the mounting part 421 slides relative to the mounting groove 441 is the direction of the opening. After the mounting part 421 and the mounting groove 441 have slid a target distance, the adapter protective cover 44 is in the target position relative to the side plate 42. When the adapter protective cover 44 is in this position, it is opposite to the first adapter 31, thus realizing the installation of the adapter protective cover 44 on the side plate 42.

[0113] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the mounting groove 441 is a semi-through groove, that is, the end of the mounting groove 441 away from the mounting opening 4411 has a stop portion, and the stop portion and the mounting portion 421 are mutually restrained along the extending direction of the mounting groove 441. With this structural form, the stop portion can limit the relative sliding distance between the mounting portion 421 and the mounting groove 441, making it difficult for the mounting portion 421 to continue sliding after sliding a target distance with the mounting groove 441, which is beneficial to keep the adapter protective cover 44 in the target position relative to the side plate 42.

[0114] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the mounting part 421 abuts against the wall of the mounting groove 441 along the depth direction of the mounting groove 441. In this way, the side plate 42 can limit the position of the adapter protective cover 44 along the depth direction of the mounting groove 441, which helps to improve the reliability of the adapter protective cover 44 installation.

[0115] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, along the second direction, the end face of the first end of the end plate 41 is disposed opposite to the adapter protective cover 44, and the second direction, the thickness direction of the side plate 42, and the thickness direction of the end plate 41 are perpendicular to each other; one of the mounting part 421 and the mounting groove 441 is disposed on the surface of the side plate 42 near the inside of the battery. By disposing of one of the mounting part 421 and the mounting groove 441 on the surface of the side plate 42 near the inside of the battery, the space inside the battery is fully utilized, which is beneficial to improving the compactness of the structure and reducing the volume of the battery.

[0116] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 It is understood that, in this embodiment of the application, along the second direction, the first adapter 31 is disposed between the end plate 41 and the adapter protective cover 44.

[0117] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12In some embodiments of this application, the end plate 41 is disposed on one side of the side plate 42 along the thickness direction. This improves the reliability of the installation between the end plate 41 and the side plate 42. Furthermore, in some embodiments of this application, the first adapter 31 is located between the two side plates 42. Thus, along the thickness direction of the side plate 42, the side plate 42 can shield the first adapter 31, protecting it and improving the reliability of the battery module.

[0118] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the mounting portion 421 is formed on the side plate 42, and the mounting groove 441 is formed on the adapter protective cover 44. Along the thickness direction of the side plate 42, the mounting groove 441 faces the side plate 42; that is, the height direction of the mounting groove 441 points from the adapter protective cover 44 to the side plate 42, and along the thickness direction of the side plate 42, the height direction of the mounting groove 441 points from the inside of the battery to the outside of the battery. Along the thickness direction of the side plate 42, the depth direction of the mounting groove 441 points from the outside of the battery to the inside of the battery. The height direction and the depth direction of the mounting groove 441 are parallel but opposite in orientation. This makes the manufacturing of the mounting groove 441 and the mounting portion 421 more convenient.

[0119] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 Based on this, in some embodiments of this application, the mounting portion 421 is a guide rib formed on the surface of the side plate 42 facing the inside of the battery. This makes the manufacturing of the mounting portion 421 more convenient. Based on this, in some embodiments of this application, the guide rib is formed at the edge of one end of the side plate 42 along the second direction. Of course, in some embodiments of this application, the guide rib may also be formed in the middle of the side plate 42 along the second direction.

[0120] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, a mounting groove 441 is formed on a side plate 42, and a mounting portion 421 is formed on a connector protective cover 44. Along the thickness direction of the side plate 42, the mounting groove 441 faces into the battery module; that is, along the thickness direction of the side plate 42, the height direction of the mounting groove 441 points from the outside of the battery to the inside of the battery. This makes the manufacturing of the mounting groove 441 and the mounting portion 421 more convenient.

[0121] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12Based on this, in some embodiments of this application, the mounting portion 421 is a protrusion formed on the adapter protective cover 44, and the protrusion direction of the protrusion is the depth direction of the mounting groove 441. This makes the manufacturing of the mounting portion 421 more convenient. In some embodiments of this application, the mounting portion 421 may not be a protrusion formed on the adapter protective cover 44. For example, along the thickness direction of the side plate 42, the end face of the mounting portion 421 facing the side plate 42 may not have a protrusion, and the mounting portion 421 is inserted into the mounting groove 441 along the depth direction of the mounting groove 441.

[0122] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 Of course, in some embodiments of this application, the depth direction of the mounting groove 441 may not be parallel to the thickness direction of the side plate 42, but may be parallel to the direction of the side plate 42, such as parallel to the second direction.

[0123] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the mounting groove 441 is located on one side of the end plate 41 along the second direction. Thus, the portion of the adapter protective cover 44 facing the end face of the first end of the end plate 41 is mounted on the side plate 42 via the mounting groove 441 and the mounting portion 421, making the receiving space formed by the adapter protective cover 44 and the end plate 41 more stable. This receiving space accommodates the first adapter 31 and provides good protection for the first adapter 31. Furthermore, the mounting groove 441 being located on one side of the end plate 41 along the second direction also helps to reduce the length of the adapter protective cover 44 in the thickness direction of the end plate 41, thus improving the compactness of the structure.

[0124] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 It should be explained that, in this embodiment of the application, the first end and the second end of the end plate 41 are the two opposite ends of the end plate 41 in the second direction. Along the second direction, the first end of the end plate 41 is closer to the mounting groove 441 than the second end.

[0125] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the extending direction of the mounting groove 441 is perpendicular to the thickness direction of the side plate 42, that is, the extending direction of the mounting groove 441 is parallel to the side plate 42. This facilitates the processing and manufacturing of the mounting groove 441.

[0126] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the mounting groove 441 extends along the thickness direction of the end plate 41. The side plate 42 extends a relatively long distance in the thickness direction of the end plate 41, so that the mounting groove 441 extends along the thickness direction of the end plate 41. The length of the side plate 42 in the thickness direction of the end plate 41 is fully utilized, which is beneficial to improving the compactness of the structure and can reduce the length of the side plate 42 in its own thickness direction and its length in the second direction.

[0127] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, a mounting groove 441 is formed on the adapter protective cover 44, and the mounting opening 4411 faces from the side of the end plate 41 away from the battery to the side of the end plate 41 closer to the battery. This makes the installation of the adapter protective cover 44 more convenient.

[0128] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, a mounting groove 441 is formed on the side plate 42, and the mounting opening 4411 faces from the side of the end plate 41 closest to the battery to the side of the end plate 41 furthest from the battery. This facilitates the installation of the adapter protective cover 44.

[0129] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, there are two side plates 42, which are arranged opposite to each other. A mounting groove 441 and a mounting portion 421 are provided between the adapter protective cover 44 and each side plate 42. By providing a mounting groove 441 and a mounting portion 421 between the adapter protective cover 44 and each side plate 42, both ends of the adapter protective cover 44 can be reliably installed along the thickness direction of the side plate 42, which improves the reliability of the adapter protective cover 44 installation.

[0130] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12In some embodiments of this application, the groove wall of the mounting groove 441 clamps the mounting portion 421 along the second direction. This ensures more reliable positioning between the adapter protective cover 44 and the side plate 42 along the second direction. It is understood that the mounting groove 441 and mounting portion 421 are provided between the adapter protective cover 44 and each side plate 42, ensuring better protection of the side plate 42 and the adapter protective cover 44 in the thickness direction of the side plate 42. The groove wall of the mounting groove 441 clamps the mounting portion 421 along the second direction, further ensuring better positioning of the side plate 42 and the adapter protective cover 44 in the second direction. This allows the side plate 42 and the adapter protective cover 44 to be stably positioned relative to each other in all directions, improving the stability of the installation of the side plate 42 and the adapter protective cover 44.

[0131] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 Of course, in some embodiments of this application, the groove wall of the mounting groove 441 may also clamp the mounting part 421 along the thickness direction of the end plate 41 or the thickness direction of the side plate 42.

[0132] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the surface of the adapter protective cover 44 away from the end plate 41 is recessed with an elongated groove 442. The extending direction of the elongated groove 442 has an angle with the extending direction of the mounting groove 441. The angle is greater than or equal to 60° and less than or equal to 90°. For example, the size of the angle can be 60°, 75° or 90°, etc. By forming an elongated groove 442 on the surface of the adapter protective cover 44 away from the end plate 41, the friction between the hand and the surface of the adapter protective cover 44 away from the end plate 41 can be increased. The extension direction of the elongated groove 442 has an angle with the extension direction of the mounting groove 441, which is greater than or equal to 60° and less than or equal to 90°. This significantly increases the friction along the extension direction of the mounting groove 441, making it easier for the person to push the adapter protective cover 44 along the extension direction of the mounting groove 441. It also allows the groove wall of the mounting groove 441 to slide relative to the adapter protective cover 44, thus enabling the adapter protective cover 44 to be installed with the side plate 42.

[0133] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, the number of elongated grooves 442 is at least two, and the at least two elongated grooves 442 are arranged along a first direction. This helps to increase the friction between the hand and the surface of the adapter protective cover 44 away from the end plate 41.

[0134] Please refer to Figure 2 , Figure 10 , Figure 11 and Figure 12 In some embodiments of this application, at least two elongated grooves 442 extend in parallel directions. This facilitates the processing and manufacturing of the elongated grooves 442.

[0135] Please refer to Figure 2 and Figure 13 In some embodiments of this application, a second buffer 9 is provided between two adjacent battery cells 1. The buffer pad can absorb the expansion force of the battery cell 1, which helps to improve the stress condition of the battery cell 1. In some embodiments of this application, the second buffer 9 extends along the edge of the battery cell 1. In this way, the weight of the second buffer 9 can be reduced, saving material consumption of the second buffer 9.

[0136] Please refer to Figure 2 , Figure 14 and Figure 15 In some embodiments of this application, along the first direction, the collector 62 and the adapter assembly 3 are respectively located at both ends of the battery, with the collector 62 disposed on the upper side of the end plate 41. Thus, the end plate 41 serves both to protect the battery cell 1 and to house the collector 62, resulting in high utilization of the end plate 41. Furthermore, the location of the collector 62 and the adapter assembly 3 at both ends of the battery facilitates the placement of the collector 62.

[0137] In some embodiments of this application, the collector 62 has snap-fit ​​holes at both ends along the thickness direction of the side plate 42, and snap-fit ​​members pass through the snap-fit ​​holes and the end plate 41 to fix the collector 62 to the end plate. In some embodiments of this application, the snap-fit ​​members are made of plastic. This makes the installation of the collector 62 more convenient.

[0138] Please refer to Figure 2 , Figure 14 and Figure 15 In some embodiments of this application, the battery further includes two output rows 8. Along a first direction, the ends of two battery cell groups close to each other are detachably electrically connected, and the other ends of the two battery cell groups close to each other are respectively connected to one end of the two output rows 8. The other end of the output row 8 extends to the corresponding end plate 41. The positive output electrode 7 passes through one output row 8 and the end plate 41, and the negative output electrode 7 passes through the other output row 8 and the end plate 41. In this way, the installation of the positive output electrode 7 and the negative output electrode 7 is more convenient and reliable.

[0139] Please refer to Figure 2 , Figure 14 and Figure 15In some embodiments of this application, the positive output electrode 7 is disposed on the upper end surface of the end plate 41, and the negative output electrode 7 is disposed on the upper end surface of the end plate 41. In this way, the installation of the positive output electrode 7 and the negative output electrode 7 on the end plate 41 is more convenient.

[0140] Please refer to Figure 2 , Figure 14 and Figure 15 In some embodiments of this application, the end plate 41 is disposed on one side of the side plate 42 along the thickness direction; the output row 8 includes a first extension 81 and a second extension 82. The first end of the first extension 81 is connected to an electrode, and the second end extends along a first direction between the end plate 41 and the side plate 42; the first end of the second extension 82 is connected to the second end of the first extension 81, and the second end of the second extension 82 extends along the edge of the end plate 41 to the upper side of the end plate 41, connecting with the corresponding output electrode 7. Thus, along the thickness direction of the side plate 42, the side plate 42 covers a large area of ​​the output row 8, providing sufficient protection for the output row 8 and improving battery reliability.

[0141] Please refer to Figure 2 , Figure 14 and Figure 15 In some embodiments of this application, a crack-prevention notch is provided at the second end of the first extension 81. This helps to reduce the stress on the output outlet 8.

[0142] Please refer to Figure 2 , Figure 14 and Figure 15 In some embodiments of this application, the electrodes face the side plate 42, and the side plate 42 covers the first extension 81 along its thickness direction. This allows the side plate 42 to cover a larger area of ​​the output row 8, providing sufficient protection for the output row 8 and improving battery reliability. It is understood that in these embodiments, along the thickness direction of the side plate 42, the battery pack and the side plate 42 are located on opposite sides of the first extension 81, and the end plate 41 and the side plate 42 are also located on opposite sides of the first extension 81.

[0143] Please refer to Figure 2 , Figure 14 and Figure 15 In some embodiments of this application, the positive output electrode 7 and the negative output electrode 7 are located on opposite sides of the collector 62 along the thickness direction of the side plate 42. The end plate 41 has a relatively large length in the thickness direction of the side plate 42, which makes full use of the length of the end plate 41 in the thickness direction of the side plate 42, making the arrangement of the positive output electrode 7, the collector 62 and the negative output electrode 7 more convenient.

[0144] Please refer to Figure 2 , Figure 14 and Figure 15 In some embodiments of this application, the outer casing 4 further includes an output electrode protection cover 45, which is fixed relative to the end plate 41. The upper surface of the end plate 41 is disposed opposite to the output electrode protection cover 45, and the output electrode 7 is located between the end plate 41 and the output electrode protection cover 45. In this way, the end plate 41 and the output electrode protection cover 45 can better protect the output electrode 7, which is beneficial to improving the safety and reliability of the battery.

[0145] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. A battery, characterized by, The battery module comprises two battery cell groups, each of which comprises at least two battery cells, the battery cells in the same battery cell group are connected in series and have the same electrode orientation, and the battery cells in different battery cell groups have different electrode orientations. In the first direction, the battery cells of the two battery cell groups are staggered, and the ends of the two battery cell groups close to each other are detachably electrically connected.

2. The battery of claim 1, wherein, The adapter assembly comprises a first adapter and two second adapters, the two second adapters are arranged one-to-one corresponding to the two battery cell groups, the first end of the second adapter is electrically connected to one end of the corresponding battery cell group, the second ends of the two second adapters are spaced apart, and are detachably connected to the first adapter, so that the ends of the two battery cell groups close to each other are detachably electrically connected.

3. The battery of claim 2, wherein, The end plate is arranged opposite to the battery cell group in the first direction, and the second end of the second adapter, the first adapter and the end plate are connected by fasteners.

4. The battery of claim 3, wherein, The side plate is connected to the end plate and surrounds the battery cells together. The second end of the second adapter extends to one side of the end plate in the second direction, and the second direction, the first direction and the thickness direction of the side plate are perpendicular to each other.

5. The battery of claim 4, wherein, The end plate is arranged on one side of the side plate in the thickness direction. The second adapter comprises: The first extension section has a first end connected to the electrode and a second end extending to the space between the end plate and the side plate in the first direction; The second extension section has a first end connected to the second end of the first extension section, and a second end extending to one side of the end plate in the second direction along the edge of the end plate and connected to the fastener.

6. The battery of claim 5, wherein, The second end of the first extension section is provided with a crack stop groove.

7. The battery of any one of claims 3 to 6, wherein, The adapter protection cover is fixed opposite to the end plate, and the end surface of one end of the end plate is arranged opposite to the adapter protection cover in the extension direction of the fastener, and the first adapter is located between the end plate and the adapter protection cover.

8. The battery of claim 7, wherein, The side plate is connected to the end plate and surrounds the battery cells together.

9. The battery of claim 8, wherein, In the second direction, the end surface of the first end of the end plate is arranged opposite to the adapter protection cover, the second direction, the thickness direction of the side plate and the thickness direction of the end plate are perpendicular to each other; one of the mounting portion and the mounting groove is arranged on the surface of the side plate close to the battery module.

10. The battery of claim 9, wherein, The mounting groove is located on one side of the end plate in the second direction.

11. The battery of claim 9, wherein, The mounting groove extends in the thickness direction of the end plate.

12. A vehicle characterized by comprising: The battery module comprises the battery module according to any one of claims 1-11. The battery module comprises the battery module according to any one of claims 1-11.

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