CN221486740U - Battery components - Google Patents

Abstract

The application provides a battery assembly, and relates to the technical field of energy storage. The battery assembly includes a battery pack, a bus bar, a first connecting member, a second connecting member, and an elastic member, and the bus bar is electrically connectable to or disconnectable from the battery pack. When the battery assembly is in the first state, the first connecting piece is connected with the second connecting piece stably and reliably, so that the battery pack is connected with the bus bar stably and reliably, and the electric connection relation between the battery pack and the bus bar is kept stable and reliable, and the battery pack can stably output current to an external electric connection structure through the bus bar. When the battery assembly is in the second state, the bus bar and the battery pack can be separated, so that the bus bar and the battery pack are separated from each other and detached, and a user can conveniently maintain and overhaul the battery pack and the bus bar.

Description

Battery components

Technical Field

The present application relates to a battery assembly, belonging to the field of energy storage technology.

Background technique

With the development of new energy technology, batteries are being used more and more widely. Single batteries can be connected in series and in parallel to form battery modules with higher capacity and voltage levels to meet different power requirements. In order to connect the cells in series, this can be achieved by electrically connecting the cells to the busbar.

In the related art, the busbar and the battery cell are connected by welding. Such connection method is relatively complicated in process, and the busbar and the battery cell cannot be easily disassembled, which makes the battery module inconvenient to maintain.

Utility Model Content

The present application provides a battery assembly that solves the problem of inconvenient connection between batteries and bus bars in the related art.

The present application provides a battery assembly, comprising:

Battery;

A bus bar, electrically connected to or disconnected from the battery pack;

A first connecting member, disposed on the battery pack, wherein the first connecting member has a first limiting groove;

A second connecting member, disposed on the bus bar, wherein the second connecting member has a second limiting groove;

an elastic member, disposed between the first connecting member and the second connecting member;

The battery assembly has a first state and a second state. When the battery assembly is in the first state, one end of the elastic member is connected to one of the first connecting member and the second connecting member, and the other end of the elastic member abuts against the other; the first connecting member abuts against the second connecting member, and different parts of the elastic member are respectively placed in the first limiting groove and the second limiting groove;

When the battery assembly is in the second state, the first connecting member is separated from the second connecting member, and the elastic member is separated from the first connecting member or the second connecting member.

In some embodiments, the elastic member is connected to the first connecting member, and at least a portion of the elastic member is located in the first limiting groove.

In some embodiments, a mounting hole is provided on the first connecting member, the opening of the mounting hole is located on the inner wall of the first limiting groove, and a portion of the outer wall of the elastic member is elastically connected to the inner wall of the mounting hole.

In some embodiments, the elastic member includes an elastic portion and a protruding portion that are connected to each other, the elastic portion is elastically connected to the first connecting member, the protruding portion is connected to the side of the elastic portion that is away from the first connecting member, the outer wall of the protruding portion is an arc surface, and when the battery assembly is in the first state, the protruding portion is embedded in the second limiting groove.

In some embodiments, the number of the elastic member and the number of the second limiting grooves are both two, the two second limiting grooves are located on opposite sides of the second connecting member, and the two elastic members are arranged on the inner walls opposite to each other of the first limiting grooves;

When the battery assembly is in the first state, the two elastic members are respectively located in the two second limiting grooves.

In some embodiments, the battery pack includes a positive electrode tab and a negative electrode tab, and the second connector is electrically connected to the busbar;

When the battery assembly is in the first state, the second connector is electrically connected to the positive electrode tab and/or the negative electrode tab.

In some embodiments, the positive electrode tab and/or the negative electrode tab is located in the first limiting groove, the positive electrode tab and/or the negative electrode tab is electrically connected to the first connecting member, and the second connecting member includes a contact end;

When the battery assembly is in the first state, the contact end is located in the first limiting groove, and the contact end is in contact with the positive electrode ear and/or the negative electrode ear, and the second connector is also in contact with the first connector.

In some embodiments, the busbar, the battery pack, the first connector, the second connector, and the elastic member are all in plural numbers;

Two first connectors are provided on each of the battery packs, two second connectors are provided on each of the busbars, and the positive electrode tab and the negative electrode tab are respectively located in the first limiting grooves of the two first connectors;

The plurality of battery packs are arranged along a preset direction, and one of the two second connectors of any one of the busbars is located in the first limiting groove of the first connector of one of the two adjacent battery packs and is connected to the positive electrode ear of the correspondingly connected battery pack;

Another of the second connecting members is located in the first limiting groove of another of the first connecting members in two adjacent battery packs, and is connected to the negative electrode ear of the correspondingly connected battery pack;

The plurality of elastic members are arranged correspondingly to the plurality of first connecting members.

In some embodiments, a plurality of external connectors are further included, each of which is provided with a second connector, and the external connector is electrically connected to the corresponding second connector;

The multiple battery packs include a first battery pack and a second battery pack located at both ends of the preset direction, one of the external connectors is electrically connected to the positive electrode tab of the first battery pack, and another of the external connectors is connected to the negative electrode tab of the second battery pack.

In some embodiments, it further includes a housing, an insulating isolation plate, and an insulating flame retardant plate;

A plurality of battery packs are arranged in the housing, the insulating isolation plate is covered on the plurality of battery packs and is located between the battery packs and the inner wall of the housing, and a plurality of bus bars are arranged at intervals on the insulating isolation plate;

The insulating flame-retardant plate is arranged between adjacent battery groups, and the battery group is arranged on the insulating flame-retardant plate, and a gap is formed between the battery group and the inner wall of the shell.

In the battery assembly provided by the present application, the bus is electrically connected to the battery pack, so that the power of the battery pack can be transmitted to the bus. When the battery assembly is in the first state and the elastic member is arranged on the first connecting member, the second connecting member is located in the first limiting groove, so that the first limiting groove can limit the second connecting member, so that the first connecting member can be fixed to the second connecting member. The elastic member is located in the second limiting groove, so that the elastic member can be fixed to the second connecting member, and because the elastic member is connected to the first connecting member, the first connecting member and the second connecting member can be further fixed to each other, so that the connection effect between the first connecting member and the second connecting member is more reliable, thereby making the bus.

When the battery assembly is in the first state and the elastic member is disposed on the second connector, the first connector is located in the second limiting groove, so that the second limiting groove can limit the first connector, thereby allowing the first connector to be fixed to the second connector. The elastic member is located in the first limiting groove, so that the elastic member can be fixed to the first connector, and because the elastic member is connected to the second connector, the first connector and the second connector can be further fixed to each other, thereby making the connection effect between the first connector and the second connector more reliable, thereby making the busbar.

When the battery assembly is in the second state, the first connecting member is separated from the second connecting member, and the elastic member is separated from the first connecting member and the second connecting member, so that the bus bar is separated from the battery pack, and the bus bar and the battery pack are separated and disassembled from each other, so that the user can conveniently maintain and repair the battery pack and the bus bar.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other purposes, features and advantages of the embodiments of the present application will become more easily understood through the following detailed description with reference to the accompanying drawings. In the accompanying drawings, multiple embodiments of the present application will be described in an exemplary and non-limiting manner, wherein:

FIG1 is an exploded schematic diagram of a battery assembly according to an embodiment of the present application;

FIG2 is a schematic diagram of a battery pack of a battery assembly according to an embodiment of the present application;

FIG3 is a schematic diagram showing an enlarged view of area A in FIG2 in one embodiment;

FIG4 is an enlarged schematic diagram showing area A in FIG2 in another embodiment;

FIG5 is a schematic diagram of a busbar of a battery assembly according to an embodiment of the present application;

FIG6 is an enlarged schematic diagram showing area B in FIG5 ;

FIG7 is a schematic diagram of an insulating isolation plate of a battery assembly according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a mounting groove of an insulating isolation plate of a battery assembly according to an embodiment of the present application.

Reference numerals:

100-battery group, 110-positive electrode ear, 120-negative electrode ear, 100a-first battery group, 100b-second battery group,

200-busbar,

300-first connecting member, 310-first limiting groove, 320-mounting hole,

400-second connecting member, 410-second limiting groove, 420-contact end,

500-elastic member, 510-elastic portion, 520-protruding portion,

600-External connector,

710-insulating isolation board, 711-installing groove, 720-insulating flame retardant board, 730-box, 740-cover plate, 750-side plate.

Detailed ways

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

With the development of new energy technology, batteries are being used more and more widely. Single batteries can be connected in series and in parallel to form battery modules with higher capacity and voltage levels to meet different power requirements. In order to connect the cells in series, this can be achieved by electrically connecting the cells to the busbar.

In the related art, the busbar and the battery cell are connected by welding. Such connection method is relatively complicated in process, and the busbar and the battery cell cannot be easily disassembled, which makes the battery module inconvenient to maintain.

In the battery assembly proposed in the present application, the bus is electrically connected to the battery pack, so that the power of the battery pack can be transmitted to the bus. When the battery assembly is in the first state and the elastic member is arranged on the first connecting member, the second connecting member is located in the first limiting groove, so that the first limiting groove can limit the second connecting member, so that the first connecting member can be fixed to the second connecting member. The elastic member is located in the second limiting groove, so that the elastic member can be fixed to the second connecting member, and because the elastic member is connected to the first connecting member, the first connecting member and the second connecting member can be further fixed to each other, so that the connection effect between the first connecting member and the second connecting member is more reliable, thereby making the bus.

When the battery assembly is in the first state and the elastic member is disposed on the second connector, the first connector is located in the second limiting groove, so that the second limiting groove can limit the first connector, thereby allowing the first connector to be fixed to the second connector. The elastic member is located in the first limiting groove, so that the elastic member can be fixed to the first connector, and because the elastic member is connected to the second connector, the first connector and the second connector can be further fixed to each other, thereby making the connection effect between the first connector and the second connector more reliable, thereby making the busbar.

When the battery assembly is in the second state, the first connecting member is separated from the second connecting member, and the elastic member is separated from the first connecting member and the second connecting member, so that the bus bar is separated from the battery pack, and the bus bar and the battery pack are separated and disassembled from each other, so that the user can conveniently maintain and repair the battery pack and the bus bar.

The battery assembly provided in the present application is described in detail below in conjunction with specific embodiments.

The embodiment of the present application proposes a battery assembly, as shown in FIGS. 1 to 6, including a battery pack 100, a busbar 200, a first connector 300, a second connector 400 and an elastic member 500, wherein the busbar 200 and the battery pack 100 can be electrically connected or disconnected. The first connector 300 is disposed on the battery pack 100, the second connector 400 is disposed on the busbar 200, the first connector 300 has a first limiting groove 310, the second connector 400 has a second limiting groove 410, the elastic member 500 is disposed between the first connector 300 and the second connector 400, and the elastic member 500 can be connected to the first connector 300 or the second connector 400. The battery assembly has a first state and a second state. When the battery assembly is in the first state and the elastic member 500 is disposed on the first connector 300, at least part of the second connector 400 is located in the first limiting groove 310, and at least part of the elastic member 500 is located in the second limiting groove 410. When the battery assembly is in the first state and the elastic member 500 is disposed on the second connector 400, at least a portion of the first connector 300 is located in the second limiting groove 410, and at least a portion of the elastic member 500 is located in the first limiting groove 310. When the battery assembly is in the second state, the first connector 300 is separated from the second connector 400, and the elastic member 500 is separated from the first connector 300 or the second connector 400.

The battery pack 100 is an energy storage component of the battery assembly, and the battery pack 100 can output current. The busbar 200 is electrically connected to the battery pack 100, so that the current of the battery pack 100 can be output to the busbar 200, and the busbar 200 can also be connected to other energy storage components, so that other energy storage components can also output current to the busbar 200. The busbar 200 is also connected to an external electrical connection component, so that the current of the battery pack 100 can be output to the external electrical connection component through the busbar 200, and the battery pack 100 can also be connected in series with other energy storage components.

When the battery assembly is in the first state and the elastic member 500 is disposed on the first connector 300, the second connector 400 is located in the first limiting groove 310, so that the first limiting groove 310 can limit the second connector 400, so that the first connector 300 can be fixed to the second connector 400. The elastic member 500 is located in the second limiting groove 410, so that the second limiting groove 410 can limit the elastic member 500, so that the elastic member 500 can be fixed to the second connector 400. And because the elastic member 500 is connected to the first connector 300, the first connector 300 and the second connector 400 can be further fixed to each other, so that the connection effect of the first connector 300 and the second connector 400 is more reliable, and then the connection effect of the busbar 200 and the battery pack 100 is more reliable, so that the electrical connection effect of the busbar 200 and the battery pack 100 is also more reliable.

When the battery assembly is in the first state and the elastic member 500 is disposed on the second connector 400, the first connector 300 is located in the second limiting groove 410, so that the second limiting groove 410 can limit the first connector 300, so that the first connector 300 can be fixed to the second connector 400. The elastic member 500 is located in the first limiting groove 310, so that the first limiting groove 310 can limit the elastic member 500, so that the elastic member 500 can be fixed to the first connector 300. And because the elastic member 500 is connected to the second connector 400, the first connector 300 and the second connector 400 can be further fixed to each other, so that the connection effect of the first connector 300 and the second connector 400 is more reliable, and then the connection effect of the busbar 200 and the battery pack 100 is more reliable, so that the electrical connection effect of the busbar 200 and the battery pack 100 is also more reliable.

Therefore, when the battery assembly is in the first state, the first connecting member 300 and the second connecting member 400 are stably and reliably connected, so that the battery pack 100 and the bus 200 are stably and reliably connected. In this way, the electrical connection relationship between the battery pack 100 and the bus 200 remains stable and reliable, so that the battery pack 100 can stably output current to the external electrical connection structure through the bus 200.

When the battery assembly is in the second state, the first connector 300 is separated from the second connector 400. If the elastic member 500 is connected to the first connector 300, the elastic member 500 is separated from the second connector 400. If the elastic member 500 is connected to the second connector 400, the elastic member 500 is separated from the first connector 300. The busbar 200 can be separated from the battery pack 100, so that the busbar 200 and the battery pack 100 can be separated and disassembled from each other, so that the user can conveniently perform maintenance and repair on the battery pack 100 and the busbar 200.

In some embodiments, referring to FIG. 3 and FIG. 4 , the elastic member 500 is connected to the first connecting member 300 , and the elastic member 500 is located in the first limiting groove 310 .

It is worth noting that the elastic member 500 of the present application is specifically connected to the first connecting member 300, and since the elastic member 500 is arranged in the first limiting groove 310, correspondingly, when the battery assembly is in the first state, the second limiting groove 410 of the second connecting member 400 is also located in the first limiting groove 310, so that the elastic member 500 located in the first limiting groove 310 can be directly embedded in the second limiting groove 410.

Specifically, when the elastic member 500 is disposed on the first connecting member 300, the elastic member 500 can be deformed by force, so that when the battery assembly is switched from the first state to the second state, the elastic member 500 can be deformed by force and moved out of the second limiting groove 410, so that the second connecting member 400 can be moved out of the first limiting groove 310. When the battery assembly is switched from the second state to the first state, the elastic member 500 can be deformed by force and extend into the second limiting groove 410, so that the elastic member 500 and the second connecting member 400 are fixed to each other.

In some embodiments, a mounting hole 320 is provided on the first connecting member 300 , the opening of the mounting hole 320 is located on the inner wall of the first limiting groove 310 , and a portion of the outer wall of the elastic member 500 is elastically connected to the inner wall of the mounting hole 320 .

Specifically, the mounting hole 320 is a through hole opened on the inner wall of the first limiting groove 310, and part of the outer wall of the elastic member 500 is elastically connected to the inner wall of the mounting hole 320. Correspondingly, another part of the elastic member 500 is separated from the inner wall of the mounting hole 320, so that when the elastic member 500 is subjected to force, the elastic member 500 can move relative to the first connecting member 300. When the second connecting member 400 extends into the first limiting groove 310, the second connecting member 400 can squeeze the elastic member 500, so that the elastic member 500 moves away from the second connecting member 400. When the second connecting member 400 moves to the opening of the second limiting groove 410 and faces the elastic member 500, the elastic member 500 is no longer squeezed by the second connecting member 400, and the restoring deformation force of the elastic member 500 can drive the elastic member 500 to move toward the second connecting member 400, so that the elastic member 500 can be embedded in the second limiting groove 410. When the elastic member 500 is subjected to force again and moves away from the second connecting member 400 , the elastic member 500 can be moved out of the second limiting groove 410 , so that the elastic member 500 and the second connecting member 400 no longer interfere with each other, and the second connecting member 400 can extend out of the first limiting groove 310 .

In some embodiments, referring to Figures 3 and 4, the elastic member 500 includes an elastic portion 510 and a protrusion 520 that are connected to each other, the elastic portion 510 is elastically connected to the first connecting member 300, the protrusion 520 is connected to the side of the elastic portion 510 that is away from the first connecting member 300, and the outer wall of the protrusion 520 is an arc surface. When the battery assembly is in the first state, the protrusion 520 is embedded in the second limiting groove 410.

The elastic part 510 is elastically connected to the first connecting member 300, so that the elastic part 510 can move relative to the first connecting member 300, and because the protrusion 520 is arranged on the elastic part 510, the protrusion 520 can move relative to the first connecting member 300 along with the elastic part 510. When the battery assembly is in the first state, the protrusion 520 is embedded in the second limiting groove 410, so that the protrusion 520 and the second connecting member 400 are fixed. The outer wall of the protrusion 520 is set as an arc surface, so when the second connecting member 400 is subjected to force, the outer wall of the protrusion 520 can slide relative to the opening of the second limiting groove 410, so that the second connecting member 400 can be separated from the elastic member 500, so that the second connecting member 400 can be smoothly separated from the elastic member 500.

In addition, when the battery assembly is in the first state, the outer wall of the protrusion 520 can be arranged to abut against the inner wall of the second limiting groove 410, so that the fixing effect of the second connecting member 400 and the elastic member 500 can be more stable and reliable.

In some embodiments, referring to FIG3 and FIG4 , the number of the elastic member 500 and the number of the second limiting grooves 410 are both two, the two second limiting grooves 410 are located on opposite sides of the second connecting member 400, and the two elastic members 500 are disposed on the inner walls opposite to the first limiting groove 310. When the battery assembly is in the first state, the two elastic members 500 are located in the two second limiting grooves 410, respectively.

The two second limiting grooves 410 are distributed on opposite sides of the second connecting member 400, so that when the second connecting member 400 extends into the first limiting groove 310, the two second limiting grooves 410 can be respectively arranged opposite to the inner wall opposite to the first limiting groove 310. The two elastic members 500 are arranged on the inner wall opposite to the first limiting groove 310, so that when the second connecting member 400 extends into the first limiting groove 310, the two elastic members 500 can be respectively arranged opposite to the two second limiting grooves 410, so that the two elastic members 500 can be respectively embedded in the two second limiting grooves 410. In this way, the first connecting member 300 and the second connecting member 400 are fixed to each other at more locations, and the fixed locations are arranged in a balanced manner, and the fixing effect of the first connecting member 300 and the second connecting member 400 is more stable and reliable.

In addition, the number of elastic members 500 can also be set to four, and the four elastic members 500 can be distributed on the inner walls around the first limiting groove 310. When the second connecting member 400 extends into the first limiting groove 310, two of the elastic members 500 can be embedded in the second limiting groove 410, and the remaining two elastic members 500 can be clamped on the outer walls opposite to each other of the second connecting member 400.

In some embodiments, as shown in FIG1 , the battery pack 100 includes a positive electrode tab 110 and a negative electrode tab 120, and the second connector 400 is electrically connected to the busbar 200. When the battery assembly is in the first state, the second connector 400 is electrically connected to the positive electrode tab 110 or the negative electrode tab 120.

The positive electrode ear 110 and the negative electrode ear 120 of the battery pack 100 are the positive electrode and the negative electrode of the battery pack 100. Since the second connector 400 is electrically connected to the busbar 200, when the second connector 400 is electrically connected to the positive electrode ear 110 or the negative electrode ear 120 of the battery pack 100, the busbar 200 can be electrically connected to the battery pack 100 through the second connector 400. When the busbar 200 is also electrically connected to other energy storage components, the busbar 200 can connect the other energy storage components in series with the battery pack 100. By connecting the second connector 400 to the positive electrode ear 110 or the negative electrode ear 120, it is not necessary to additionally set other components for electrically connecting to the battery pack 100 on the busbar 200, thereby achieving the purpose of simplifying the structure of the busbar 200, and ultimately achieving the purpose of simplifying the structure of the battery assembly.

In some embodiments, referring to FIG. 1 and FIG. 2 , in order to facilitate the electrical connection between the second connector 400 and the positive electrode ear 110 and the negative electrode ear 120 of the battery pack 100, the positive electrode ear 110 and/or the negative electrode ear 120 of the battery pack 100 may be arranged corresponding to the first connector 300, so that at least one of the positive electrode ear 110 and the negative electrode ear 120 of the battery pack 100 may be arranged in the limiting groove of the first connector 300. For example, the positive electrode ear 110 or the negative electrode ear 120 may be arranged in the first limiting groove 310 alone, or the positive electrode ear 110 and the negative electrode ear 120 may be arranged in the first limiting groove 310 at the same time, and this application does not limit this. The second connector 400 includes a contact end 420, which is specifically an end of the second connector 400. When the battery assembly is in the first state, the contact end 420 of the second connector 400 can extend into the first limiting groove 310 and contact the positive electrode ear 110 and/or the negative electrode ear 120 located in the first limiting groove 310, so that the second connector 400 can be electrically connected to the positive electrode ear 110 and/or the negative electrode ear 120, and further the second connector 400 can be electrically connected to the battery pack 100.

When the battery assembly is in the second state, the contact end 420 of the second connector 400 can extend into the first limiting groove 310, so that the contact end 420 of the second connector 400 can be separated from the positive electrode ear 110 and/or the negative electrode ear 120, so that the second connector 400 is no longer electrically connected to the battery pack 100.

Therefore, by switching the battery assembly between the first state and the second state, not only can the battery pack 100 and the busbar 200 be switched between an electrically connected state and a disconnected state, but the busbar 200 and the battery pack 100 can also be switched between a relatively fixed state and a separated state. In this way, it is not necessary to separately control the electrical connection or disconnection of the battery pack 100 and the busbar 200, making it more convenient to assemble and disassemble the battery pack 100 and the busbar 200.

In addition, after the positive electrode ear 110 and/or the negative electrode ear 120 are arranged in the first limiting groove 310, the positive electrode ear 110 and/or the negative electrode ear 120 can also be surrounded by the first connecting member 300, so that the first connecting member 300 can also protect the positive electrode ear 110 and/or the negative electrode ear 120 and prevent the positive electrode ear 110 and/or the negative electrode ear 120 from being damaged by collision.

The first connector 300 can also be electrically connected to the positive electrode ear 110 and/or the negative electrode ear 120 of the battery pack 100. When the battery assembly is in the first state, the first connector 300 is also electrically connected to the corresponding second connector 400. In this way, even if the contact end 420 of the second connector 400 accidentally fails to contact the positive electrode ear 110 and/or the negative electrode ear 120 of the battery pack 100, the bus 200 can be electrically connected to the battery pack 100 through the second connector 400 and the first connector 300, thereby making the electrical connection effect between the bus 200 and the battery pack 100 more reliable.

In some embodiments, as shown in FIG. 1 , the number of the busbar 200, the battery pack 100, the first connector 300, the second connector 400 and the elastic member 500 in the present application can be set to multiple. Among them, the multiple battery packs 100 can be arranged along a preset direction, so that each battery pack 100 has other adjacent battery packs 100 and forms a battery row. The number of battery rows can also be set to multiple, and the multiple battery rows can be arranged in a direction perpendicular to the preset direction, so that the multiple battery packs 100 can be arranged in order. Two first connectors 300 are provided on each battery pack 100 in the multiple battery packs 100, and the two first connectors 300 can be respectively arranged corresponding to the positive pole ear 110 and the negative pole ear 120 on the battery pack 100, so that the positive pole ear 110 and the negative pole ear 120 of the battery pack 100 can be respectively located in the first limiting groove 310 of the two first connectors 300, so that the positive pole ear 110 and the negative pole ear 120 can be surrounded by the first connector 300 and protected. Each first connecting member 300 is provided with a corresponding elastic member 500 .

The busbar 200 may be disposed on two adjacent battery packs 100, and two second connectors 400 are disposed on each busbar 200. One of the two second connectors 400 on the busbar 200 may be connected to the first connector 300 corresponding to the positive electrode ear 110 on one of the two adjacent battery packs 100, and the other of the two second connectors 400 on the busbar 200 may be connected to the first connector 300 corresponding to the negative electrode ear 120 on the other of the two adjacent battery packs 100. In this way, the second connector 400 may be electrically connected to the positive electrode ear 110 and the negative electrode ear 120 of the two adjacent battery packs 100, so that the two adjacent battery packs 100 may be connected in series through the corresponding busbar 200. The second connectors 400 on the plurality of busbars 200 can connect a plurality of adjacent battery packs 100 in series, so that all the battery packs 100 can be connected in series, which can make the battery assembly have better discharge performance.

In summary, the positive tab 110 on any battery pack 100 is electrically connected to the negative tab 120 on an adjacent battery pack 100 via a bus 200, and the negative tab 120 on the battery pack 100 is connected to the positive tab 110 on an adjacent battery pack 100 via another bus 200, so that adjacent battery packs 100 can form a passage.

In some embodiments, referring to FIG. 1 and FIG. 7 , in order to facilitate the connection of multiple battery packs 100 with external electrical connection components so that the multiple battery packs 100 can output current to the external electrical connection components, the battery assembly may also be provided with multiple external connection members 600. After the multiple battery packs 100 are arranged along a preset direction, the multiple battery packs 100 may include a first battery pack 100a and a second battery pack 100b located at both ends of the preset direction, that is, the first battery pack 100a and the second battery pack 100b are located at the head and tail ends of the multiple battery packs 100. Among them, the positive electrode ear 110 of the first battery pack 100a is not connected to the second connection member 400 on the bus 200, and the negative electrode ear 120 of the second battery pack 100b is not connected to the second connection member 400 on the bus 200.

A second connector 400 is provided on the external connector 600, wherein the second connector 400 of one external connector 600 can extend into the first limiting groove 310 of the first connector 300 corresponding to the positive electrode ear 110 on the first battery pack 100a, and the elastic member 500 on the first connector 300 can extend into the second limiting groove 410 of the second connector 400. The second connector 400 on the other external connector 600 can extend into the first limiting groove 310 of the first connector 300 corresponding to the negative electrode ear 120 on the second battery pack 100b, and the elastic member 500 on the first connector 300 can extend into the second limiting groove 410 of the second connector 400. The two external connectors 600 can be connected to an external electrical connection component, so that a battery pack formed by connecting multiple battery packs 100 in series can be electrically connected to an external electrical connection component.

In some embodiments, as shown in FIG1 , in order to make the structure of the battery assembly of the present application more stable and reliable, the battery assembly may also include a housing. The housing has a cavity, and a plurality of battery packs 100 may be disposed in the cavity of the housing, so that the battery packs 100 are not exposed, thereby protecting the battery packs 100.

The housing may include a box body 730, an upper cover plate 740 and a side plate 750. The top and side of the box body 730 have openings, and the upper cover plate 740 and the side plate 750 may be detachably disposed on the opening of the box body 730. This makes it convenient to take multiple battery packs 100 from the housing.

In some embodiments, with reference to FIG. 1 , FIG. 7 and FIG. 8 , the battery assembly of the present application further includes an insulating isolation plate 710 and an insulating flame retardant plate 720. Among them, a plurality of battery packs 100 are arranged at intervals along a preset direction, and the insulating flame retardant plate 720 can be arranged between adjacent battery packs 100 to separate adjacent battery packs 100 and prevent short circuits between adjacent battery packs 100. When the number of battery packs 100 is more than two, the number of insulating flame retardant plates 720 can be set to multiple to ensure that an insulating flame retardant plate 720 is arranged between each group of adjacent battery packs 100. The battery pack 100 can be arranged on the insulating flame retardant plate 720, so that the outer wall of the insulating flame retardant plate 720 can contact the inner wall of the shell so that the insulating flame retardant plate 720 can be fixed, and the battery pack 100 arranged on the insulating flame retardant plate 720 can be arranged at intervals from the inner wall of the shell, so that the battery pack 100 does not contact the shell, and a short circuit between the battery pack 100 and the shell is prevented. The insulating isolation plate 710 is disposed to cover the plurality of battery packs 100 , and the insulating isolation plate 710 is located between the battery pack 100 and the inner wall of the housing.

A plurality of busbars 200 may be disposed on the insulating isolation plate 710 . Specifically, a plurality of mounting grooves for mounting the busbars 200 may be provided on the insulating isolation plate 710 .

Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned implementation modes, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present application.

Claims (10)

1. A battery assembly, comprising: Battery pack (100); A bus bar (200) electrically connected to or disconnected from the battery pack (100); A first connecting member (300) is arranged on the battery pack (100), wherein the first connecting member (300) has a first limiting groove (310); A second connecting member (400) is arranged on the busbar (200), and the second connecting member (400) has a second limiting groove (410); An elastic member (500) is disposed between the first connecting member (300) and the second connecting member (400); The battery assembly has a first state and a second state. When the battery assembly is in the first state, one end of the elastic member (500) is connected to one of the first connecting member (300) and the second connecting member (400), and the other end of the elastic member (500) abuts against the other; the first connecting member (300) abuts against the second connecting member (400), and different parts of the elastic member (500) are respectively placed in the first limiting groove (310) and the second limiting groove (410); When the battery assembly is in the second state, the first connecting member (300) is separated from the second connecting member (400), and the elastic member (500) is separated from the first connecting member (300) or the second connecting member (400). 2. The battery assembly according to claim 1 is characterized in that the elastic member (500) is connected to the first connecting member (300), and at least a portion of the elastic member (500) is located in the first limiting groove (310). 3. The battery assembly according to claim 2 is characterized in that a mounting hole (320) is provided on the first connecting member (300), the opening of the mounting hole (320) is located on the inner wall of the first limiting groove (310), and a portion of the outer wall of the elastic member (500) is elastically connected to the inner wall of the mounting hole (320). 4. The battery assembly according to claim 3 is characterized in that the elastic member (500) includes an elastic portion (510) and a protruding portion (520) connected to each other, the elastic portion (510) is elastically connected to the first connecting member (300), the protruding portion (520) is connected to the side of the elastic portion (510) facing away from the first connecting member (300), the outer wall of the protruding portion (520) is an arc surface, and when the battery assembly is in the first state, the protruding portion (520) is embedded in the second limiting groove (410). 5. The battery assembly according to any one of claims 2 to 4, characterized in that the number of the elastic member (500) and the number of the second limiting groove (410) are both two, the two second limiting grooves (410) are located on opposite sides of the second connecting member (400), and the two elastic members (500) are arranged on opposite inner walls of the first limiting groove (310); When the battery assembly is in the first state, the two elastic members (500) are respectively located in the two second limiting grooves (410). 6. The battery assembly according to any one of claims 1 to 4, characterized in that the battery pack (100) comprises a positive electrode tab (110) and a negative electrode tab (120), and the second connector (400) is electrically connected to the busbar (200); When the battery assembly is in the first state, the second connector (400) is electrically connected to the positive electrode tab (110) and/or the negative electrode tab (120). 7. The battery assembly according to claim 6, characterized in that the positive electrode ear (110) and/or the negative electrode ear (120) is located in the first limiting groove (310), the positive electrode ear (110) and/or the negative electrode ear (120) is electrically connected to the first connecting member (300), and the second connecting member (400) includes a contact terminal (420); When the battery assembly is in the first state, the contact end (420) is located in the first limiting groove (310), and the contact end (420) is in contact with the positive electrode ear (110) and/or the negative electrode ear (120), and the second connector (400) is also in contact with the first connector (300). 8. The battery assembly according to claim 7, characterized in that the number of the busbar (200), the battery pack (100), the first connecting member (300), the second connecting member (400) and the elastic member (500) are all multiple; Two first connecting members (300) are provided on each battery pack (100), two second connecting members (400) are provided on each busbar (200), and the positive electrode tab (110) and the negative electrode tab (120) are respectively located in the first limiting grooves (310) of the two first connecting members (300); A plurality of the battery packs (100) are arranged along a preset direction, and one of the two second connectors (400) of any one of the busbars (200) is located in the first limiting groove (310) of the first connector (300) of one of the two adjacent battery packs (100), and is connected to the positive electrode tab (110) of the correspondingly connected battery pack (100); Another of the second connecting members (400) is located in the first limiting groove (310) of another of the first connecting members (300) in two adjacent battery packs (100), and is connected to the negative electrode ear (120) of the correspondingly connected battery pack (100); The plurality of elastic members (500) are arranged correspondingly to the plurality of first connecting members (300). 9. The battery assembly according to claim 8, characterized in that it further comprises a plurality of external connectors (600), each of the external connectors (600) is provided with a second connector (400), and the external connector (600) is electrically connected to the corresponding second connector (400); The plurality of battery packs (100) include a first battery pack (100a) and a second battery pack (100b) located at two ends of the preset direction, one of the external connectors (600) being electrically connected to the positive electrode tab (110) of the first battery pack (100a), and another of the external connectors (600) being connected to the negative electrode tab (120) of the second battery pack (100b). 10. The battery assembly according to claim 1, further comprising a housing, an insulating isolation plate (710) and an insulating flame retardant plate (720); A plurality of battery packs (100) are arranged in the housing, the insulating isolation plate (710) is covered on the plurality of battery packs (100) and is located between the battery packs (100) and the inner wall of the housing, and a plurality of bus bars (200) are arranged at intervals on the insulating isolation plate (710); The insulating flame-retardant plate (720) is arranged between adjacent battery packs (100), and the battery pack (100) is arranged on the insulating flame-retardant plate (720), and a gap is formed between the battery pack (100) and the inner wall of the shell.