Battery assembly, battery device and electric device

Abstract

The invention provides a battery assembly, a battery device and a power utilization device, and relates to the technical field of batteries. The battery assembly comprises at least two battery modules, a bracket and an electric connecting piece, the support is connected to at least one battery module, the electric connecting piece is arranged on the support, and the electric connecting piece is connected with different battery modules so that the battery modules can be electrically conducted. According to the battery assembly, the positions of the bracket and the battery module are relatively fixed, and the electric connecting piece is arranged on the bracket, so that a positioning reference is formed by assembling the electric connecting piece and the battery module through the bracket, the positioning precision is improved, and rapid assembly of the battery assembly is facilitated. When the battery assembly is applied to the battery device, the mounting precision between the battery assembly and other components in the battery device can be improved, the battery assembly can be conveniently assembled in the battery device, and the mounting efficiency and the production efficiency of the battery device are further improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery assembly, a battery device, and an electrical device. Background Art

[0002] With the continuous development of battery device technology, the energy density of battery devices has increased, making the application fields of battery devices more extensive.

[0003] In the related art, a battery device includes a box and a plurality of battery modules. The plurality of battery modules are arranged inside the box, and the plurality of battery modules are electrically connected to each other through a transition structure.

[0004] However, due to the limited internal space of the box, the installation of the adapter structure and the battery module is difficult, resulting in poor production efficiency of the battery device. Summary of the Invention

[0005] The present application provides a battery assembly, a battery device, and an electrical device, which improve the production efficiency of the battery device by reducing the difficulty of installation.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] The present application provides a battery assembly, comprising:

[0008] At least two battery modules;

[0009] a bracket connected to at least one of the battery modules;

[0010] An electrical connector is provided on the bracket, and the electrical connector connects different battery modules to make the battery modules electrically conductive.

[0011] In some embodiments, at least part of the electrical connector is connected to the bracket in an embedded manner.

[0012] In some embodiments, the bracket has a bezel, and at least part of the electrical connector is located in the bezel.

[0013] In some embodiments, a busbar is provided at the end of the electrical connector, and the electrical connector is connected to the pole of the battery cell at the end of the battery module through the busbar and is electrically conductive.

[0014] In some embodiments, the bracket and the battery module are connected in a snap-fit ​​manner.

[0015] In some embodiments, the bracket has a first mounting slot, and one end of the battery module is clamped to the bracket through the first mounting slot;

[0016] And / or, the bracket has a first buckle, and the battery module is connected to the bracket via the first buckle.

[0017] In some embodiments, the groove wall of the first installation groove has a first avoidance portion, the clip is located around the first avoidance portion, and the pole of the battery cell at the end of the battery module passes through the first avoidance portion and is engaged with the first clip.

[0018] In some embodiments, the battery cell at the end of the battery module has an explosion-proof valve, the bracket has a second avoidance portion, and the second avoidance portion and the explosion-proof valve are arranged opposite to each other so that there is a gap between the bracket and the explosion-proof valve.

[0019] In some embodiments, the electrical connector has a first connection hole and a first fixing portion, the bracket has a second connection hole, and the first fixing portion is passed through the first connection hole and the second connection hole to connect the electrical connector to the bracket.

[0020] In some embodiments, the bracket has a second mounting groove, a first fixing member is disposed in the second mounting groove, and the second connecting hole is disposed on the first fixing member.

[0021] In some embodiments, the first fixing member is movably disposed in the first mounting groove.

[0022] In some embodiments, the battery module includes a first battery module and a second battery module, the first battery module is connected to the bracket; the electrical connector has a third connection hole and a second fixing portion, the second battery module has a fourth connection hole, and the second fixing portion is passed through the third connection hole and the fourth connection hole to connect the electrical connector to the second battery module.

[0023] In some embodiments, the battery module has a third mounting groove, a second fixing member is disposed in the third mounting groove, and the fourth connection hole is disposed on the second fixing member.

[0024] In some embodiments, the second fixing member is movably disposed in the third mounting groove.

[0025] In some embodiments, the first battery module and the second battery module are stacked.

[0026] In some embodiments, the electrical connector includes a first electrical connection portion and a second electrical connection portion, wherein the first electrical connection portion and the second electrical connection portion are electrically connected;

[0027] An end portion of the first electrical connection portion facing away from the second electrical connection portion is electrically connected to the first battery module, and an end portion of the second electrical connection portion facing away from the first electrical connection portion is electrically connected to the second battery module.

[0028] In some embodiments, the battery assembly further includes a voltage-sharing relay, and two ends of the voltage-sharing relay are respectively connected to the first electrical connection portion and the second electrical connection portion.

[0029] In some embodiments, the bracket includes a first portion and a second portion, the first portion and the second portion are coupled and connected to form a first mounting groove, and the battery module is located in the first mounting groove.

[0030] In some embodiments, the first portion has a first mating portion, the second portion has a second mating portion, and the first mating portion and the second mating portion are mated to connect the first portion and the second portion.

[0031] In some embodiments, there are multiple first engaging portions, and the multiple first engaging portions are arranged at intervals;

[0032] The second mating portion is arranged in a one-to-one correspondence with the first mating portion.

[0033] In some embodiments, the first engaging portion includes a second buckle, and the second engaging portion includes a slot.

[0034] In some embodiments, a reinforcement structure is provided on a side of the bracket facing away from the battery module.

[0035] In some embodiments, the reinforcement structure includes a first reinforcement portion extending along a first direction;

[0036] And / or, the reinforcement structure includes a second reinforcement portion, the second reinforcement portion extends along a second direction; and the first direction and the second direction intersect.

[0037] In some embodiments, the orthographic projection of the reinforcement structure on the surface of the bracket is in a grid shape.

[0038] In some embodiments, the bracket and the electrical connector are connected by integral molding.

[0039] In a second aspect, the present application provides a battery device comprising the battery assembly described in any one of the first aspects.

[0040] In some embodiments, the battery device further includes a box having a receiving cavity, and the battery assembly is installed in the receiving cavity.

[0041] In some embodiments, the battery device further includes a battery management system electrically connected to the voltage-sharing relay of the battery assembly.

[0042] In a third aspect, the present application provides an electrical device comprising: the battery assembly provided in the first aspect; or the battery device provided in the second aspect.

[0043] The present application provides a battery assembly, a battery device and an electrical device, wherein the battery assembly includes at least two battery modules, a bracket and an electrical connector. The bracket is connected to at least one battery module, the electrical connector is arranged on the bracket, and the electrical connector connects different battery modules to make the battery modules electrically conductive. In the present application, the positions of the bracket and the battery module are relatively fixed, and the electrical connector is arranged on the bracket to form a positioning reference for the assembly between the electrical connector and the battery module through the bracket to improve the positioning accuracy and facilitate the rapid assembly of the battery assembly. When the battery assembly is applied to the battery device, the installation accuracy between the battery assembly and other components in the battery device can be improved, the assembly of the battery assembly in the battery device can be facilitated, and the installation efficiency and production efficiency of the battery device can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0045] Figure 1 A schematic diagram of a battery device provided in an embodiment of the present application;

[0046] Figure 2 An internal schematic diagram of a battery device provided in an embodiment of the present application Figure 1 ;

[0047] Figure 3 for Figure 2 A magnified view of the local structure of the solid line frame part;

[0048] Figure 4 Schematic diagram of the bracket in the battery assembly provided in the embodiment of the present application Figure 1 ;

[0049] Figure 5 for Figure 4 A magnified view of the local structure of the dotted box;

[0050] Figure 6 An internal schematic diagram of a battery device provided in an embodiment of the present application Figure 2 ;

[0051] Figure 7 for Figure 6 An enlarged view of the local structure of part II;

[0052] Figure 8 Schematic diagram of the bracket in the battery assembly provided in the embodiment of the present application Figure 2 ;

[0053] Figure 9 for Figure 8 A magnified view of the local structure of the dotted box part;

[0054] Figure 10 for Figure 6 An enlarged view of the local structure of part I;

[0055] Figure 11 A schematic diagram of a first portion of a bracket in a battery assembly provided in an embodiment of the present application;

[0056] Figure 12 A schematic diagram of the second portion of the bracket in the battery assembly provided in an embodiment of the present application.

[0057] Description of reference numerals:

[0058] 100-battery assembly;

[0059] 110 - battery module; 110a - first battery module; 110b - second battery module; 111 - battery cell;

[0060] 120 - bracket; 121 - embedding groove; 122 - first mounting groove; 1221 - first avoidance portion; 123 - first buckle; 124 - second mounting groove; 125 - first portion; 1251 - first mating portion; 126 - second portion; 1261 - second mating portion; 127 - reinforcement structure; 1271 - first reinforcement portion; 1272 - second reinforcement portion; 128 - second avoidance portion;

[0061] 130 - electrical connector; 131 - first connecting hole; 132 - first fixing portion; 133 - third connecting hole; 134 - second fixing portion; 135 - third mounting slot; 136 - first electrical connecting portion; 137 - second electrical connecting portion; 138 - voltage divider relay;

[0062] 140-busbar;

[0063] 200-battery device; 210-box. DETAILED DESCRIPTION

[0064] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0065] Combine Figure 1 、 Figure 2 、 Figure 3 In a first aspect, the present application provides a battery assembly 100 comprising at least two battery modules 110. The at least two battery modules 110 are electrically connected to each other. The embodiments of the present application do not require a specific manner of connecting the battery modules 110 in series and / or in parallel.

[0066] The number of battery modules 110 in the embodiment of the present application may be two or more. When there are more than one battery module 110 , there is no requirement for the specific number.

[0067] In some embodiments, the battery assembly 100 further includes electrical connectors 130 , which are respectively connected to different battery modules 110 to make the battery modules 110 electrically conductive.

[0068] For example, the electrical connector 130 may be an aluminum busbar, a copper busbar, or a cable, etc., which is not limited in the present embodiment. It should be noted that the present embodiment uses a copper busbar as an example to illustrate various implementations of the present application.

[0069] When the battery assembly 100 is used in a battery device 200, the battery assembly 100 is installed in the housing 210 of the battery device 200. This requires high installation precision between the electrical connector 130 and the battery module 110 to prevent interference between the battery assembly 100 and the housing 210 when the battery assembly 100 and the housing 210 are mated. However, as installation precision increases, the difficulty of installing the battery assembly 100 and the housing 210 of the battery device 200 increases, as does the difficulty of installing the electrical connector 130 and the battery module 110. These factors place more stringent requirements on the installation of the battery device 200, resulting in reduced installation efficiency and production efficiency of the battery device 200.

[0070] In order to solve the above problems, the battery assembly 100 in the embodiment of the present application further includes a bracket 120, which is connected to at least one battery module 110. The electrical connector 130 is provided on the bracket 120. In this way, the positions of the bracket 120 and the battery module 110 are relatively fixed, and the electrical connector 130 is provided on the bracket 120, so that a positioning reference is formed for the assembly between the electrical connector 130 and the battery module 110 through the bracket 120, so as to improve the positioning accuracy and facilitate the rapid assembly of the battery assembly 100. When the battery assembly 100 is applied to the battery device 200, the installation accuracy between the battery assembly 100 and other components in the battery device 200 can be improved, the assembly of the battery assembly 100 in the battery device 200 is facilitated, and the installation efficiency and production efficiency of the battery device 200 are further improved.

[0071] There are a variety of connection structures for the electrical connector 130 to be arranged on the bracket 120. As one optional embodiment, at least part of the electrical connector 130 is connected to the bracket 120 in an embedded manner. In this way, the electrical connector 130 and the bracket 120 are fixedly connected in an embedded manner, and a tight fit is formed between the electrical connector 130 and the bracket 120, which enhances the stability of the overall structure and prevents the electrical connector 130 from loosening or falling off. Furthermore, the embedded position of the electrical connector 130 is relatively fixed, so that during the connection process between the electrical connector 130 and the battery module 110, the positional relationship between the electrical connector 130 and the battery module 110 is determined by the bracket 120, thereby improving the installation accuracy of the battery assembly 100, facilitating the assembly of the battery assembly 100, and improving the installation efficiency and production efficiency of the battery assembly 100 and the battery device 200.

[0072] It should be noted that if Figure 3 As shown, the electrical connector 130 can be partially embedded in the bracket 120, with one end of the electrical connector 130 electrically connected to the battery module 110, and the other end of the electrical connector 130 exposed to the outside of the bracket 120 and electrically connected to another battery module 110. Of course, in some embodiments, the electrical connector 130 can also be fully embedded in the bracket 120, with one end of the electrical connector 130 connected to and electrically conductive with the battery module 110, and a portion of the structure at the other end of the electrical connector 130 can be connected to and electrically conductive with another battery module 110 by welding or threaded fastening. This embodiment of the application does not impose any requirements on the size of the structure embedded in the bracket 120 of the electrical connector 130.

[0073] There are many embedded connection structures of the bracket 120 and the electrical connector 130, combined with Figure 3 、 Figure 8 and Figure 9In the embodiment of the present application, the bracket 120 has a bezel 121, and at least a portion of the electrical connector 130 is located within the bezel 121. Thus, the bezel 121 provides a precise positioning reference for the electrical connector 130, ensuring that the electrical connector 130 is accurately installed. Furthermore, the electrical connector 130 can be quickly inserted into the bezel 121 and secured to the bracket 120, simplifying the installation process between the electrical connector 130 and the bracket 120 and improving the assembly efficiency of the battery assembly 100 and battery device 200. Furthermore, the bezel 121 design embeds the electrical connector 130 within the bracket 120, reducing the external space occupied by the electrical connector 130 and making the overall structure of the battery assembly 100 and battery device 200 more compact.

[0074] See Figure 3 In some embodiments, a busbar 140 is provided at the end of the electrical connector 130 , and the electrical connector 130 is connected to the pole of the battery cell 111 at the end of the battery module 110 through the busbar 140 and is electrically conductive.

[0075] It is not difficult to understand that the busbar 140 is connected to the electrical connector 130 and the poles of the battery cell 111 respectively. The busbar 140 usually has a large cross-sectional area and low resistance characteristics, which can effectively reduce energy loss during current transmission and improve current transmission efficiency.

[0076] For example, the busbar 140 may be made of copper busbar, aluminum busbar, etc.

[0077] In some embodiments, the busbar 140 and the poles of the battery module 110 are fixed by reliable methods such as welding and bolting to ensure close contact between the electrical connector 130 and the poles, so as to reduce the contact resistance between the busbar 140, the electrical connector 130 and the battery module 110, as well as the problem of heating of the battery device 200 caused by the contact resistance. In this way, by enhancing the connection stability between the various parts of the battery assembly 100, the probability of thermal runaway of the battery device 200 is reduced, and the safety of the battery device 200 is improved.

[0078] It is easy to understand that the electrical connector 130 is disposed on the bracket 120, and the connection between the bracket 120 and the battery module 110 can improve the installation accuracy between the electrical connector 130 and the battery module 110, thereby improving the installation efficiency of the battery assembly 100 and the battery device 200, and further increasing the production capacity of the battery device 200. Therefore, in some embodiments, the bracket 120 and the battery module 110 are connected in a snap-fit ​​manner.

[0079] In this way, the bracket 120 and the battery module 110 are connected in a snap-fit ​​manner, and the relative position between the bracket 120 and the battery module 110 is fixed. This can improve the installation accuracy between the electrical connector 130 on the bracket 120 and the battery module 110, making the connection between the battery module 110 and the electrical connector 130 accurate and convenient. The snap-fit ​​connection method also makes the installation process between the bracket 120 and the battery module 110 simple and quick, which can improve the assembly efficiency of the battery device 200. Furthermore, the snap-fit ​​connection is a detachable connection method, which facilitates the disassembly and assembly between the battery module 110 and the bracket 120, facilitating the maintenance and replacement of the battery module 110.

[0080] In some embodiments, the clamping connection between the bracket 120 and the battery module 110 can be achieved by the clamping force of a clamping structure. The clamping structure can be provided on at least one of the bracket 120 and the battery module 110. When both the bracket 120 and the battery module 110 have a clamping structure, the clamping structure on the bracket 120 and the clamping structure of the battery module 110 are mutually adapted to improve the installation accuracy of the bracket 120 and the battery module 110, and enhance the stability of the connection between the bracket 120 and the battery module 110 via the clamping structure.

[0081] There are many ways to form a snap-on structure, such as protrusions and grooves, and the embodiments of this application do not make specific requirements for this.

[0082] In an optional embodiment of the present application, the bracket 120 has a first mounting groove 122 , and one end of the battery module 110 is connected to the bracket 120 through the first mounting groove 122 .

[0083] See Figure 4 The battery module 110 includes a plurality of battery cells 111, which are assembled and electrically connected. The bracket 120 is located at the end of the battery module 110 and is engaged with the battery cells 111 at the end of the battery module 110. Specifically, a first mounting groove 122 is provided on the side of the bracket 120 facing the battery module 110. The shape of the first mounting groove 122 is adapted to the battery cells 111 at the end of the battery module 110. In this way, the groove wall of the first mounting groove 122 supports and tightens the battery cells 111, thereby stabilizing the connection between the battery module 110 and the bracket 120 and reducing shaking between the bracket 120 and the battery module 110, thereby ensuring the installation accuracy between the electrical connector 130 and the battery module 110 and facilitating the connection between the electrical connector 130 and the battery module 110.

[0084] Optional, see Figure 4 and Figure 5The bracket 120 has a first snap 123, and the battery module 110 is connected to the bracket 120 via the first snap 123. In this manner, in the embodiment of the present application, the simple structure of the first snap 123 facilitates the production of the bracket 120 and the connection between the bracket 120 and the battery module 110. Furthermore, the first snap 123 is disposed on the bracket 120 to form a clamping and tightening force on the battery module 110 through the first snap 123, thereby reducing the shaking between the battery module 110 and the bracket 120, thereby stabilizing the connection between the battery module 110 and the bracket 120 and further ensuring the installation accuracy between the electrical connector 130 and the battery module 110.

[0085] In some embodiments, the bracket 120 can be provided with a first mounting groove 122 and a first clip 123. Through the provision of the first mounting groove 122 and the first clip 123, the bracket 120 can be connected to the battery module 110 from different positions and angles to ensure a stable connection between the bracket 120 and the battery module 110.

[0086] See Figure 4 、 Figure 5 Figure 6 and Figure 7 In some embodiments, the groove wall of the first mounting groove 122 has a first avoidance portion 1221, and the first clip 123 is located on the peripheral side of the first avoidance portion 1221. The pole of the battery cell 111 at the end of the battery module 110 passes through the first avoidance portion 1221 and is engaged with the first clip 123.

[0087] For example, the first avoidance portion 1221 can be a hole-like structure provided on the wall of the first mounting groove 122. The hole-like structure penetrates the wall of the first mounting groove 122 and is used to allow the terminal of the battery cell 111 at the end of the battery module 110 to pass through, so that the terminal of the battery cell 111 is exposed from the first avoidance portion 1221 to facilitate connection with the electrical connector 130 on the bracket 120. The shape of the first avoidance portion 1221 matches the shape of the terminal.

[0088] The first clips 123 in the embodiment of the present application are arranged on the peripheral side of the first avoidance portion 1221, wherein the number of the first clips 123 on the peripheral side of the first avoidance portion 1221 can be one, two or more, and the embodiment of the present application does not require a specific number of the first clips 123.

[0089] In combination with the aforementioned embodiment, the electrical connector 130 and the bracket 120 are connected in an embedded manner, which can improve the installation accuracy between the electrical connector 130 and the bracket 120 and between the electrical connector 130 and the battery module 110 .

[0090] For further information, see Figure 3In some embodiments, the electrical connector 130 has a first connection hole 131 and a first fixing portion 132 , the bracket 120 has a second connection hole, and the first fixing portion 132 is passed through the first connection hole 131 and the second connection hole to connect the electrical connector 130 to the bracket 120 .

[0091] In the embodiment of the present application, the first fixing portion 132 may be a columnar structural member, etc., and the cross-sectional shape of the first fixing portion 132 may be square, circular, triangular, polygonal, irregular, etc. Accordingly, the shapes of the first connection hole 131 and the second connection hole both match the cross-sectional shape of the first fixing portion 132. Thus, in the embodiment of the present application, the first fixing portion 132 is inserted through the first connection hole 131 and the second connection hole to form a simple hole-axis connection structure, which facilitates the connection between the electrical connector 130 and the bracket 120, thereby facilitating the assembly and production of the battery assembly 100 and the battery device 200, thereby increasing the production efficiency and capacity of the battery assembly 100 and the battery device 200.

[0092] It should be noted that when the first fixing portion 132 is inserted into the first connection hole 131 and the second connection hole, an interference fit can be adopted between the first fixing portion 132 and the first connection hole 131 and the second connection hole, respectively, so as to stabilize the connection between the electrical connector 130 and the bracket 120, avoid looseness between the electrical connector 130 and the bracket 120, and prevent the internal resistance of the battery device 200 from increasing, thereby improving the thermal safety of the battery device 200 and extending the service life of the battery device 200.

[0093] It is not difficult to understand that when the first fixing portion 132 is passed through the first connecting hole 131 and the second connecting hole, errors are inevitable in the manufacturing process of the first fixing portion 132, the first connecting hole 131 and the second connecting hole, resulting in reduced stability of the hole-axis matching connection structure formed by the first fixing portion 132 and the first connecting hole 131 and the second connecting hole, and inconvenience in installation.

[0094] In order to solve the above problem, in an optional embodiment of the present application, at least one of the first connecting hole 131 and the second connecting hole has a first internal thread, the first fixing portion 132 has a first external thread, and the first fixing portion 132 is connected by the matching of the first external thread and the first internal thread so that the electrical connector 130 is connected to the bracket 120.

[0095] Alternatively, when the first connection hole 131 has a first internal thread, the first external thread of the first fixing portion 132 is engaged with the first internal thread of the first connection hole 131 and then passed through the second connection hole of the bracket 120 to form a hole-axis connection structure. It should be noted that the second connection hole in this case may be a plain hole.

[0096] Optionally, when the second connection hole has a first internal thread, the first fixing portion 132 passes through the first connection hole 131, and the first external thread of the first fixing portion 132 and the first internal thread of the second connection hole are mated and connected, so that the electrical connector 130 is connected to the bracket 120. It should be noted that the first fixing portion 132 and the first connection hole 131 form a hole-axis connection structure, and in this case, the first connection hole 131 can be a blank hole.

[0097] Optionally, when both the first connecting hole 131 and the second connecting hole have a first internal thread, the first external thread of the first fixing portion 132 can be matched with the first internal thread of the first connecting hole 131 and the first internal thread of the second connecting hole in sequence to connect the electrical connector 130 to the bracket 120.

[0098] In this way, the electrical connector 130 and the bracket 120 form a detachable connection structure with a stable threaded fastening connection through the first internal thread and the first external thread, and a mechanical fastening force is formed through such a threaded fitting connection, so that the connection structure of the electrical connector 130 and the bracket 120 is compact and stable, so as to prevent the electrical connector 130 and the bracket 120 from being disconnected during long-term use of the battery device 200.

[0099] It is understood that the electrical connector 130 and the bracket 120 are independently manufactured components, and the manufacturing process of the electrical connector 130 and the bracket 120 has errors. In order to improve the connection accuracy between the electrical connector 130 and the bracket 120, the electrical connector 130 and the bracket 120 are combined. Figure 3 、 Figure 8 and Figure 9 The bracket 120 in the embodiment of the present application has a second mounting groove 124, a first fixing member is disposed in the second mounting groove 124, and the second connecting hole is disposed on the first fixing member.

[0100] In this way, the first fixing member is arranged in the second mounting groove 124, so that the error of the mutual fit between the electrical connector 130 and the bracket 120 through the first fixing part 132, the first connecting hole 131 and the second connecting hole can be adjusted through the position of the first fixing member in the second mounting groove 124, thereby facilitating the assembly of the electrical connector 130 and the bracket 120, thereby improving the assembly efficiency and production capacity of the battery assembly 100 and the battery device 200.

[0101] Optionally, the first fixing member is movably disposed within the second mounting groove 124. It is readily understood that the first fixing member moves within the second mounting groove 124 so that the second connection hole on the first fixing member and the first connection hole 131 on the electrical connector 130 are aligned with each other, thereby reducing the error between the first fixing portion 132, the first connection hole 131, and the second connection hole. This facilitates installation of the electrical connector 130 and the bracket 120, thereby improving the production capacity of the battery assembly 100 and the battery device 200.

[0102] It should be noted that when the first fixing portion 132 is not connected to the second connection hole on the first fixing member, the first fixing member can slide within the second mounting groove 124 and its position is not fixed. When the first fixing portion 132 is connected to the second connection hole on the first fixing member, the position of the first fixing member within the second mounting groove 124 remains fixed.

[0103] It should also be noted that in the embodiment of the present application, the number of first connection holes 131, second connection holes and first fixing parts 132 corresponds one to one, and there is no requirement for the specific number of first connection holes 131, second connection holes and first fixing parts 132.

[0104] In combination with the above-mentioned embodiment, the electrical connector 130 and the bracket 120 are connected in an embedded manner. The electrical connector 130 and the bracket 120 are connected through the first fixing portion 132, the first connection hole 131 and the second connection hole. The installation accuracy between the electrical connector 130 and the bracket 120 and between the electrical connector 130 and the battery module 110 can be improved.

[0105] See Figure 3 Furthermore, in order to improve the installation accuracy between the electrical connector 130 and the battery module 110. In an optional embodiment of the present application, the battery module 110 includes a first battery module 110a and a second battery module 110b, and the first battery module 110a is connected to the bracket 120; the second end of the electrical connector 130 has a third connection hole 133 and a second fixing portion 134, and the second battery module 110b has a fourth connection hole, and the second fixing portion 134 is passed through the third connection hole 133 and the fourth connection hole, so that the electrical connector 130 is connected to the second battery module 110b.

[0106] In the embodiment of the present application, the second fixing portion 134 may be a columnar structural member, etc., and the cross-sectional shape of the second fixing portion 134 may be square, circular, triangular, polygonal, irregular, etc. Accordingly, the shapes of the third connection hole 133 and the fourth connection hole both match the cross-sectional shape of the second fixing portion 134. Thus, in the embodiment of the present application, the second fixing portion 134 is inserted through the third connection hole 133 and the fourth connection hole to form a simple hole-axis connection structure, which facilitates the connection between the electrical connector 130 and the second battery module 110b, thereby facilitating the assembly and production of the battery assembly 100 and the battery device 200, thereby increasing the production efficiency and capacity of the battery assembly 100 and the battery device 200.

[0107] It should be noted that when the second fixing portion 134 is inserted into the third connection hole 133 and the fourth connection hole, an interference fit connection method can be adopted between the second fixing portion 134 and the third connection hole 133 and the fourth connection hole, respectively, so as to stabilize the connection between the electrical connector 130 and the second battery module 110b, avoid looseness between the electrical connector 130 and the second battery module 110b, and cause an increase in the internal resistance of the battery device 200, thereby improving the thermal safety of the battery device 200 and extending the service life of the battery device 200.

[0108] It is not difficult to understand that when the second fixing portion 134 is passed through the third connecting hole 133 and the fourth connecting hole, errors are inevitable in the manufacturing process of the second fixing portion 134, the third connecting hole 133 and the fourth connecting hole, resulting in reduced stability of the hole-axis matching connection structure formed by the second fixing portion 134 and the third connecting hole 133 and the fourth connecting hole, and inconvenience in installation.

[0109] In order to solve the above problem, in an optional embodiment of the present application, at least one of the third connecting hole 133 and the fourth connecting hole has a second internal thread, the second fixing portion 134 has a second external thread, and the second fixing portion 134 is connected through the matching of the second external thread and the second internal thread so that the electrical connector 130 is connected to the second battery module 110b.

[0110] Optionally, when the third connection hole 133 has a second internal thread, the second external thread of the second fixing portion 134 is engaged with the second internal thread of the third connection hole 133, and then passed through the fourth connection hole of the second battery module 110b to form a hole-axis connection structure with the fourth connection hole. It should be noted that the fourth connection hole in this case can be a bare hole.

[0111] Optionally, when the fourth connection hole has a second internal thread, the second fixing portion 134 passes through the third connection hole 133. The second external thread of the second fixing portion 134 and the second internal thread of the fourth connection hole mate to connect the electrical connector 130 to the second battery module 110b. It should be noted that the second fixing portion 134 and the third connection hole 133 form a hole-to-shaft connection structure, and in this case, the third connection hole 133 can be a bare hole.

[0112] Optionally, when both the third connecting hole 133 and the fourth connecting hole have a second internal thread, the second external thread of the second fixing portion 134 can be matched with the second internal thread of the third connecting hole 133 and the second internal thread of the fourth connecting hole in sequence to connect the electrical connector 130 to the second battery module 110b.

[0113] In this way, the electrical connector 130 and the second battery module 110b form a detachable connection structure with a stable threaded fastening connection through the second internal thread and the second external thread, and a mechanical fastening force is formed through such a threaded fitting connection, so that the connection structure between the electrical connector 130 and the second battery module 110b is compact and stable, so as to prevent the electrical connector 130 and the battery module 110 from being disconnected during long-term use of the battery device 200.

[0114] It is understood that the electrical connector 130 and the second battery module 110b are independently manufactured components, and the manufacturing process of the electrical connector 130 and the second battery module 110b has errors. In order to improve the connection accuracy between the electrical connector 130 and the second battery module 110b, the electrical connector 130 and the second battery module 110b are combined. Figure 6 and Figure 10 In the embodiment of the present application, the second battery module 110b has a third mounting groove 135, a second fixing member is disposed in the third mounting groove 135, and a fourth connection hole is disposed on the second fixing member.

[0115] In this way, the second fixing member is arranged in the third mounting groove 135, so as to adjust the error of the mutual fit between the electrical connector 130 and the second battery module 110b through the second fixing portion 134, the third connection hole 133 and the fourth connection hole through the position of the second fixing member in the third mounting groove 135, thereby facilitating the assembly of the electrical connector 130 and the second battery module 110b, thereby improving the assembly efficiency and production capacity of the battery assembly 100 and the battery device 200.

[0116] Optionally, the second fixing member is movably disposed within the third mounting groove 135. It is readily understood that the second fixing member moves within the third mounting groove 135 so that the fourth connection hole on the second fixing member and the third connection hole 133 on the electrical connector 130 are aligned with each other, thereby reducing the error between the second fixing portion 134, the third connection hole 133, and the fourth connection hole. This facilitates the installation of the electrical connector 130 and the second battery module 110b, thereby improving the production capacity of the battery assembly 100 and the battery device 200.

[0117] It should be noted that when the second fixing portion 134 is not connected to the fourth connection hole on the second fixing member, the second fixing member can slide within the third mounting groove 135 and its position is not fixed. When the second fixing portion 134 is connected to the fourth connection hole on the second fixing member, the position of the second fixing member within the third mounting groove 135 remains fixed.

[0118] It should also be noted that in the embodiment of the present application, the number of the third connection holes 133, the fourth connection holes and the second fixing parts 134 corresponds one to one, and there is no requirement for the specific number of the third connection holes 133, the fourth connection holes and the second fixing parts 134.

[0119] Combine Figure 3 、 Figure 4 、 Figure 9 、 Figure 11 and Figure 12 In some embodiments, the bracket 120 includes a first portion 125 and a second portion 126, which are mate-connected to form a first mounting groove 122, within which the battery module 110 is located. Thus, the mate-connection of the first portion 125 and the second portion 126 facilitates the manufacture of the bracket 120 and the assembly of the bracket 120 and the battery module 110. Furthermore, the mate-connection of the first portion 125 and the second portion 126 can improve the installation accuracy between the bracket 120 and the battery module 110, further improving the installation accuracy between the electrical connector 130 and the battery module 110, thereby improving the overall installation accuracy of the battery assembly 100 and facilitating the application of the battery assembly 100 in the battery device 200.

[0120] Among them, there are many ways to mate and connect the first part 125 and the second part 126. In some embodiments, the first part 125 has a first mate portion 1251, and the second part 126 has a second mate portion 1261. The first mate portion 1251 and the second mate portion 1261 are mate-mate to connect the first part 125 and the second part 126.

[0121] For example, see Figure 11 and Figure 12 The first mating portion 1251 may be a second buckle, and the second mating portion 1261 may be a slot or a hole. Thus, the first mating portion 1251 and the second mating portion 1261 are conveniently mated and connected through the connection between the second buckle and the corresponding slot or hole.

[0122] In some embodiments, the first mating portion 1251 can be a limiting protrusion, and the second mating portion 1261 can be a limiting groove, or the first mating portion 1251 can be a limiting groove, and the second mating portion 1261 corresponds to a limiting protrusion. In this way, the first part 125 and the second part 126 are mated and connected through the mutual cooperation of the limiting protrusion and the limiting groove.

[0123] It is not difficult to understand that the structures of the first mating portion 1251 and the second mating portion 1261 are adapted to each other and correspond in position. Thus, the assembly accuracy between the first part 125 and the second part 126 is improved through the mutual cooperation of the first mating portion 1251 and the second mating portion 1261, so as to facilitate the connection between the bracket 120, the battery assembly 100 and the electrical connector 130, thereby improving the assembly efficiency and production capacity of the battery assembly 100 and the battery device 200.

[0124] See Figure 11 and Figure 12In some embodiments, there are multiple first mating portions 1251, which are spaced apart from each other. The second mating portions 1261 are disposed one-to-one with the first mating portions 1251. Thus, the one-to-one correspondence between the multiple first mating portions 1251 and the multiple second mating portions 1261 increases the mating connection force between the first portion 125 and the second portion 126, thereby ensuring a stable connection between the first portion 125 and the second portion 126.

[0125] It is not difficult to understand that during use, the battery module 110 will expand and deform due to the heat generated within the battery module 110. To prevent the expansion of the battery module 110 from causing deformation of the bracket 120 and to provide a restraining effect on the battery module 110 through the stable structure of the bracket 120, the bracket 120 in the embodiment of the present application is provided with a reinforcement structure 127 on the side facing away from the battery module 110. In this way, the provision of the reinforcement structure 127 enhances the structural strength of the bracket 120, prevents deformation of the bracket 120, and extends the service life of the battery assembly 100 and the battery device 200.

[0126] In some embodiments, the reinforcement structure 127 includes a first reinforcement portion 1271 extending along a first direction.

[0127] For example, see Figure 8 and Figure 12 The first reinforcing portion 1271 is a reinforcing rib, wherein the first direction can be along the height direction of the battery module 110, and the first direction can also be along the width direction of the battery module 110. Of course, the first reinforcing portion 1271 can also be a convex hull, etc., and this embodiment of the application does not limit this.

[0128] In some embodiments, the reinforcement structure 127 includes a second reinforcement portion 1272 extending along the second direction.

[0129] For example, see Figure 8 and Figure 12 The second reinforcing portion 1272 is a reinforcing rib, wherein the second direction can be the width direction of the battery module 110 or the height direction of the battery module 110. Of course, the second reinforcing portion 1272 can also be a convex hull, etc., and this embodiment of the application does not limit this.

[0130] It should be noted that the first direction and the second direction intersect, the first direction and the second direction may be perpendicular, an angle is formed between the first direction and the second direction, and the angle is 90°, or an angle of other degrees is formed between the first direction and the second direction. It should also be noted that the first reinforcement portion 1271 and the second reinforcement portion 1272 in the reinforcement structure 127 can be provided on the bracket 120 at the same time. Among them, at least one of the first reinforcement portion 1271 and the second reinforcement portion 1272 is multiple, the multiple first reinforcement portions 1271 are arranged at intervals, and the multiple second reinforcement portions 1272 are arranged at intervals. There is no restriction on the size of the angle between each first reinforcement portion 1271 and each second reinforcement portion 1272.

[0131] In some embodiments, the orthographic projection of the reinforcement structure 127 on the surface of the bracket 120 forms a grid. As will be appreciated, the first reinforcement portion 1271 and the second reinforcement portion 1272 are perpendicular to each other. This facilitates the production and manufacturing of the bracket 120, thereby increasing the production capacity of the battery assembly 100 and battery device 200.

[0132] In some embodiments, the battery module 110 includes an explosion-proof valve, and the bracket 120 includes a second relief portion 128. The second relief portion 128 and the explosion-proof valve are positioned relative to each other, creating a gap between the bracket 120 and the explosion-proof valve. In this manner, when thermal runaway occurs in the battery module 110, the explosion-proof valve opens and discharges gaseous substances within the battery module 110 through the gap between the bracket 120 and the explosion-proof valve. This prevents the substances discharged from the explosion-proof valve from flowing freely, thereby preventing these substances from short-circuiting or damaging other components within the battery assembly 100 and the battery device 200, further exacerbating thermal runaway, and thereby improving the thermal safety of the battery assembly 100 and the battery device 200.

[0133] In some embodiments, the bracket 120 includes an insulating member. For example, the insulating member may be a plastic insulating member, etc. The present embodiment does not specify the specific material of the bracket 120. The bracket 120, through its inherent insulation properties, provides creepage isolation between the electrical connector 130 and the battery module 110, thereby enhancing the safety of the battery assembly 100 and the battery device 200 and extending the service life of the battery assembly 100 and the battery device 200.

[0134] In some embodiments, the bracket 120 and the electrical connector 130 are connected by integral molding, for example, the bracket 120 and the electrical connector 130 are integrally molded by injection molding. This embodiment of the application does not make specific requirements on the integral molding connection between the bracket 120 and the electrical connector 130.

[0135] See Figure 2 、 Figure 6For example, in the embodiment of the present application, at least two battery modules 110 are stacked. In this way, by stacking, the number of battery modules 110 is increased, the energy density of the battery assembly 100 and the battery device 200 is improved, and the capacity of the battery device 200 is increased. In addition, the stacked battery modules 110 can also reduce the length of the battery assembly 100, thereby reducing the space occupied by the battery assembly 100 along its own length direction, so that the battery assembly 100 can be used in different scenarios. The embodiment of the present application does not make specific requirements on the usage scenarios of the battery assembly 100 and the battery device 200.

[0136] See Figure 3 In the embodiment of the present application, the electrical connector 130 includes a first electrical connector 136 and a second electrical connector 137, and the first electrical connector 136 and the second electrical connector 137 are electrically connected; the end of the first electrical connector 136 facing away from the second electrical connector 137 is electrically connected to the first battery module 110a, and the end of the second electrical connector 137 facing away from the first electrical connector 136 is electrically connected to the second battery module 110b.

[0137] The end of the first electrical connection portion 136 facing away from the second electrical connection portion 137 can be embedded in the bracket 120 and electrically connected to the pole of the battery cell 111 of the first battery module 110a that is secured to the bracket 120. A current bus 140 can also be disposed between the first electrical connection portion 136 and the corresponding pole. The end of the second electrical connection portion 137 facing away from the first electrical connection portion 136 can be electrically connected to the pole of the battery cell 111 at the end of the second battery module 110b. A current bus 140 can also be disposed between the second electrical connection portion 137 and the corresponding pole.

[0138] Furthermore, the first connection hole 131 and the first fixing portion 132 can be provided on the first electrical connection portion 136. The first fixing portion 132 and the first connection hole 131 cooperate with the second connection hole on the bracket 120 to connect the first electrical connection portion 136 to the bracket 120. The third connection hole 133 and the second fixing portion 134 can be provided on the second electrical connection portion 137. The second fixing portion 134 cooperates with the third connection hole 133 and the fourth connection hole on the battery module 110 to connect the second electrical connection portion 137 to the second battery module 110b.

[0139] In some embodiments, the battery assembly 100 further includes a voltage divider relay 138, with its two ends respectively connected to the first electrical connection portion 136 and the second electrical connection portion 137. Because the voltage of the battery module 110 is high, the provision of the voltage divider relay 138 provides monitoring, detection, and protection for the battery device 200, thereby improving the safety of the battery assembly 100 and the battery device 200.

[0140] In a second aspect, the present application provides a battery device 200 , comprising the battery assembly 100 provided in the first aspect.

[0141] The battery device 200 in the embodiment of the present application, since it includes the battery assembly 100 provided in the first aspect, can reduce the difficulty of installing the battery assembly 100 while ensuring the installation accuracy of the battery assembly 100, thereby improving the assembly efficiency and production capacity of the battery assembly 100 and the battery device 200.

[0142] In some embodiments, the battery device 200 further includes a housing 210 having a receiving cavity within which the battery assembly 100 is mounted. Thus, the housing 210 encapsulates the battery assembly 100, providing protection and isolation for the battery assembly 100, thereby extending the service life of the battery assembly 100 and the battery device 200.

[0143] In some embodiments, the battery device 200 further includes a battery management system (BMS), which is electrically connected to the voltage divider relay 138 of the battery assembly 100 .

[0144] Among them, the BMS can be integrated on the circuit board in the form of an integrated circuit, and the BMS here and the BMS mentioned in the aforementioned embodiment can be the same or different, and the number of circuit boards can be one or more, which is not required by the embodiment of the present application.

[0145] In a third aspect, an embodiment of the present application may further provide an electrical device, comprising: the battery assembly 100 provided in the first aspect; or the battery device 200 provided in the second aspect.

[0146] The electrical device provided in the embodiment of the present application, since it includes the battery assembly 100 provided in the first aspect; or the battery device 200 provided in the second aspect, can improve the assembly efficiency and production capacity of the battery assembly 100 or the battery device 200 in the electrical device.

[0147] It should be noted that the electrical devices in the embodiments of the present application include energy storage devices, aircraft, vehicles, electronic equipment, etc., and the embodiments of the present application do not make specific requirements for this.

[0148] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0149] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0150] It should be readily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes the meaning of “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0151] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90° or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery assembly, characterized in that: include: at least two battery modules (110); a bracket (120), the bracket (120) being connected to at least one of the battery modules (110); An electrical connector (130) is provided on the bracket (120), and the electrical connector (130) connects different battery modules (110) to make the battery modules (110) electrically conductive.

2. The battery assembly according to claim 1, wherein: At least part of the electrical connector (130) is connected to the bracket (120) in an embedded manner.

3. The battery assembly according to claim 2, wherein: The bracket (120) has an embedding groove (121), and at least a portion of the electrical connector (130) is located in the embedding groove (121).

4. The battery assembly according to claim 1, wherein: A busbar (140) is provided at the end of the electrical connector (130), and the electrical connector (130) is connected to the pole of the battery cell (111) at the end of the battery module (110) through the busbar (140) and is electrically conductive.

5. The battery assembly according to claim 1, wherein: The bracket (120) and the battery module (110) are connected in a snap-fit ​​manner.

6. The battery assembly according to claim 5, characterized in that The bracket (120) has a first mounting groove (122), and one end of the battery module (110) is clamped to the bracket (120) through the first mounting groove (122); And / or, the bracket (120) has a first buckle (123), and the battery module (110) is connected to the bracket (120) via the first buckle (123).

7. The battery assembly according to claim 6, characterized in that The groove wall of the first installation groove (122) has a first avoidance portion (1221), the first buckle (123) is located on the peripheral side of the first avoidance portion (1221), and the pole of the battery cell (111) at the end of the battery module (110) passes through the first avoidance portion (1221) and is engaged with the first buckle (123).

8. The battery assembly according to claim 6, wherein: The battery cell (111) at the end of the battery module (110) has an explosion-proof valve, and the bracket (120) has a second avoidance portion (128). The second avoidance portion (128) and the explosion-proof valve are arranged relative to each other so that there is a gap between the bracket (120) and the explosion-proof valve.

9. The battery assembly according to claim 1, wherein: The electrical connector (130) has a first connection hole (131) and a first fixing portion (132), the bracket (120) has a second connection hole, and the first fixing portion (132) is inserted through the first connection hole (131) and the second connection hole, so that the electrical connector (130) is connected to the bracket (120).

10. The battery assembly according to claim 9, characterized in that The bracket (120) has a second mounting groove (124), a first fixing member is arranged in the second mounting groove (124), and the second connecting hole is arranged on the first fixing member.

11. The battery assembly according to claim 10, characterized in that The first fixing member is movably arranged in the second installation groove (124).

12. The battery assembly according to claim 1, wherein: The battery module (110) comprises a first battery module (110a) and a second battery module (110b), wherein the first battery module (110a) is connected to the bracket (120); The electrical connector (130) has a third connection hole (133) and a second fixing portion (134), the second battery module (110b) has a fourth connection hole, and the second fixing portion (134) is inserted through the third connection hole (133) and the fourth connection hole to connect the electrical connector (130) to the second battery module (110b).

13. The battery assembly according to claim 12, wherein: The second battery module (110b) has a third mounting groove (135), a second fixing member is arranged in the third mounting groove (135), and the fourth connection hole is arranged on the second fixing member.

14. The battery assembly according to claim 13, wherein: The second fixing member is movably arranged in the third installation groove (135).

15. The battery assembly according to claim 12, wherein: The first battery module (110a) and the second battery module (110b) are stacked.

16. The battery assembly according to claim 12, wherein: The electrical connector (130) includes a first electrical connector (136) and a second electrical connector (137), wherein the first electrical connector (136) and the second electrical connector (137) are electrically connected; The end of the first electrical connection portion (136) facing away from the second electrical connection portion (137) is electrically connected to the first battery module (110a), and the end of the second electrical connection portion (137) facing away from the first electrical connection portion (136) is electrically connected to the second battery module (110b).

17. The battery assembly according to claim 16, wherein: It also includes a voltage-dividing relay (138), wherein two ends of the voltage-dividing relay (138) are respectively connected to the first electrical connection part (136) and the second electrical connection part (137).

18. The battery assembly according to claim 1, wherein: The bracket (120) includes a first part (125) and a second part (126), wherein the first part (125) and the second part (126) are coupled and connected to form a first mounting groove (122), and the battery module (110) is located in the first mounting groove (122).

19. The battery assembly according to claim 18, wherein: The first part (125) has a first mating portion (1251), and the second part (126) has a second mating portion (1261). The first mating portion (1251) and the second mating portion (1261) are mated to connect the first part (125) and the second part (126).

20. The battery assembly according to claim 19, wherein: There are multiple first coupling parts (1251), and the multiple first coupling parts (1251) are arranged at intervals; The second mating portion (1261) is arranged in a one-to-one correspondence with the first mating portion (1251).

21. The battery assembly according to claim 19, wherein: The first engaging portion (1251) includes a second buckle, and the second engaging portion (1261) includes a slot.

22. The battery assembly according to any one of claims 1 to 21, characterized in that: A reinforcement structure (127) is provided on a side of the bracket (120) facing away from the battery module (110).

23. The battery assembly according to claim 22, wherein: The reinforcement structure (127) includes a first reinforcement portion (1271), wherein the first reinforcement portion (1271) extends along a first direction; And / or, the reinforcement structure (127) includes a second reinforcement portion (1272), and the second reinforcement portion (1272) extends along a second direction; the first direction and the second direction intersect.

24. The battery assembly according to claim 22, wherein: The orthographic projection of the reinforcement structure (127) on the surface of the bracket (120) presents a grid shape.

25. The battery assembly according to any one of claims 1 to 21, characterized in that: The bracket (120) and the electrical connector (130) are connected by integral molding.

26. A battery device, characterized in that: A battery assembly (100) comprising any one of claims 1-25.

27. The battery device according to claim 26, characterized in that It also includes a box body (210), wherein the box body (210) has a receiving cavity, and the battery assembly (100) is installed in the receiving cavity.

28. The battery device according to claim 26, wherein: The invention also includes a battery management system, which is electrically connected to the voltage-sharing relay (138) of the battery assembly (100).

29. An electrical device, characterized in that: include: The battery assembly (100) according to any one of claims 1 to 25; or the battery device (200) according to any one of claims 26 to 28.

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