CN217086784U - Battery module and battery pack - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery module and battery package. This battery module includes: a module body; the module body is arranged between the two end plates; every end plate is equipped with integrated into one piece's protection support, and the protection support of two end plates sets up along the diagonal of module body relatively. The protective supports of the two end plates in the battery module are arranged oppositely along the diagonal line, so that the two end plates can be arranged to have the same structure, and the end plates with the same specification can be adopted for installation, so that the production cost of the battery module is reduced; the end plate and the protection support are of an integrally formed structure, so that the stability of the whole structure of the end plate can be improved, and the stability of the protection support after being connected with other structures can be improved. When installing this battery module, because both sides end plate structure is the same, so need not to distinguish the end plate specification, can save the artifical identification process in the installation to can promote battery module's assembly efficiency.

Description

Battery module and battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a battery module and battery package.

Background

In the related art, the end plates on each side of the battery module have different patterns, need to be separately prepared, and are high in cost. Moreover, because the patterns of the end plates at each side of the battery module are different, an operator needs to identify whether each end plate is the end plate at the corresponding side of the battery module in the installation process, and the assembly efficiency is seriously affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery module and battery package to reduce manufacturing cost, promote assembly efficiency.

In order to achieve the above purpose, the utility model provides the following technical scheme:

according to the utility model discloses a first aspect provides a battery module, include:

a module body;

the module body is arranged between the two end plates; every the end plate is equipped with integrated into one piece's protection support, and two the protection support of end plate is followed the diagonal of module body sets up relatively.

In the above-mentioned battery module, two end plates set up relatively, and arrange the both sides of module body in, and the protection support of every end plate sets up along the diagonal of module body relatively with the protection support of another end plate. The protective supports of the two end plates in the battery module are arranged oppositely along the diagonal line, so that the two end plates can be arranged to have the same structure, and the end plates with the same specification can be adopted for installation, so that the production cost of the battery module is reduced; the end plate and the protection support are of an integrally formed structure, so that the stability of the whole structure of the end plate can be improved, and the stability of the protection support after being connected with other structures can be improved.

When the battery module that this application provided is installed, because battery module both sides end plate structure is the same, so need not to distinguish the specification of end plate when the installation, can save the artifical identification process in the installation to can promote battery module's assembly efficiency.

According to a second aspect of the present application, there is provided a battery pack including the battery module provided in any of the above-described technical solutions.

In the battery package that this application provided, two end plates set up relatively, and arrange the both sides of module body in, and the protection support of every end plate sets up along the diagonal of module body relatively with the protection support of another end plate. The protective supports of the two end plates are arranged oppositely along the diagonal line, so that the two end plates can be arranged to have the same structure, and the end plates with the same specification can be adopted for installation, so that the production cost of the battery module is reduced; the end plate and the protection support are of an integrally formed structure, so that the stability of the whole structure of the end plate can be improved, and the stability of the protection support after being connected with other structures can be improved.

When this application of installation provides the battery module in the battery package, because battery module both sides end plate structure is the same, so need not to distinguish the specification of end plate when the installation, can save the artifical identification process in the installation to can promote battery module's assembly efficiency.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of two end plates of FIG. 1;

fig. 3 is a partial structural view of the battery module of fig. 1;

fig. 4 is a schematic view illustrating another structure of an end plate in a battery module according to an embodiment of the present disclosure;

fig. 5 is a partial structural view illustrating the end plate of fig. 4 applied to a battery module;

fig. 6 is a schematic structural view of a plurality of battery modules in fig. 1 after connection;

FIG. 7 is a perspective view of the structure of FIG. 6;

fig. 8 is a schematic diagram of a plurality of battery modules of fig. 1 after connection.

The reference numerals are explained below:

100. a battery module; 110. a module body; 111. a first polarity lead-out terminal; 112. a second polarity terminal; 120. an end plate; 130. a protective support; 131. a nut; 140. connecting lugs; 150. avoiding the missing part; 200. and a conductive member.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

The embodiment of the present application provides a battery module 100. Fig. 1 is a schematic structural view of a battery module 100 according to an embodiment of the present disclosure, and fig. 2 is a schematic structural view of two end plates 120 in fig. 1. As shown in fig. 1 and 2, the battery module 100 according to the embodiment of the present application includes:

a module body 110;

two end plates 120 arranged oppositely, and the module body 110 is arranged between the two end plates 120; each of the end plates 120 is provided with a protective holder 130 formed integrally, and the protective holders 130 of the two end plates 120 are oppositely disposed along a diagonal line of the module body 110. It should be understood that "diagonal line of the module body 110" means a facing diagonal line of the module body 110. Illustratively, two guard supports 130 are oppositely disposed along a diagonal line a of the top surface of the module body 110.

It should be noted that, since the protection supports 130 of the two end plates 120 in the battery module 100 are oppositely arranged along the diagonal line a, the two end plates 120 can be arranged to have the same structure, so that the end plates 120 with the same specification can be adopted for installation, thereby reducing the production cost of the battery module 100; the end plate 120 and the protective support 130 are integrally formed, so that the stability of the whole structure of the end plate 120 can be improved, and the stability of the protective support 130 after being connected with other structures can be improved.

It is worth noting that when the battery module 100 provided by the embodiment of the application is installed, because the end plates 120 on the two sides of the battery module 100 have the same structure, the specification of the end plates 120 does not need to be distinguished when the battery module is installed, the manual identification process in the installation process can be omitted, and therefore the assembly efficiency of the battery module 100 can be improved.

With continuing reference to the structures shown in fig. 1 and fig. 2, in order to more clearly describe the battery module 100 provided in the embodiment of the present application, the following are set: the arrangement direction of the two end plates 120 forms a first direction, and the battery module 100 is interposed between the two end plates 120 in the first direction. It is noted that the line connecting the two protective supports 130 may be completely parallel or approximately parallel to the diagonal a. Of course, the two protective supports 130 can also be oppositely arranged along the diagonal line B intersecting with a, and will not be described herein.

With continued reference to the structure shown in fig. 2, each of the end plates 120 of the battery module 100 according to the embodiment of the present disclosure may be mounted on any side of the module body 110 in the first direction. Specifically, since the end plate 120 is provided with the shield holder 130 only in one corner region, when the end plate 120 is placed from one side to the other side of the module body 110 in the direction of the dotted arrow in fig. 2, the shield holder 130 is equivalent to reaching from one end point to the other end point of the diagonal line a in fig. 2, and the arrangement requirement can still be satisfied. Therefore, when the battery module 100 provided by the embodiment of the present application is installed, an operator does not need to distinguish the front side and the back side of the end plate 120, and a manual identification process in the installation process can be omitted, so that the assembly efficiency of the battery module 100 can be improved.

With continued reference to the structure shown in fig. 1 and 2, each end plate 120 has a plate-like body portion, and a side of the body portion facing the module body 110 is substantially planar. On the side facing the module body 110, the protective support 130 is parallel or approximately parallel to the surface of the body, so that the end plate 120 and the module body 110 can be conveniently installed; on the side away from the module body 110, the protective support 130 protrudes from the body to meet the size requirement and facilitate connection to other structures.

It should be understood that the protection holder 130 may be a high voltage protection holder 130 or a low voltage protection holder 130, wherein the high voltage protection holder 130 is used for protecting the output terminal of the bus bar or the separate outgoing line, and the low voltage protection holder 130 is used for protecting the output terminal of the signal acquisition, so as to ensure the reliability of the output terminal.

In one embodiment, the module body 110 has a first polarity terminal 111 and a second polarity terminal 112 with opposite polarities, and the first polarity terminal 111 and the second polarity terminal 112 are disposed opposite to each other along a diagonal line of the module body 110.

It should be noted that the module body 110 has a first polarity terminal 111 and a second polarity terminal 112, wherein the first polarity terminal 111 and the second polarity terminal 112 have opposite polarities. Specifically, when the first polarity lead 111 is a negative polarity lead, the second polarity lead 112 is a positive polarity lead, whereas when the first polarity lead 111 is a positive polarity lead, the second polarity lead 112 is a negative polarity lead.

It is noted that the first polarity terminal 111 and the second polarity terminal 112 of the module body 110 are diagonally opposite to each other, and for example, as shown in fig. 3, the first polarity terminal 111 and the second polarity terminal 112 are diagonally opposite to each other. It is understood that the arrangement of the first polarity lead 111 and the second polarity lead 112 may be adapted to the disposition position of the shield holder 130, so that the coupling with the shield holder 130 may be facilitated.

In one embodiment, referring to the structure shown in fig. 1 in conjunction with fig. 3, at least a portion of the first polarity lead 111 is disposed on the guard support 130 of one end plate 120, and at least a portion of the second polarity lead 112 is disposed on the guard support 130 of the other end plate 120.

For example, as shown in fig. 3, the first polarity terminal 111 and the second polarity terminal 112 are formed by a bus bar structure, in this case, the protection holder 130 is a high voltage protection holder 130, and the protection holder 130 is used for outputting signals transmitted by the bus bar in the module body 110.

In one embodiment, with continued reference to the structure shown in fig. 2, the end plate 120 is provided with a connecting lug 140 on a side away from the module body 110. It should be noted that the connection lug 140 can facilitate the fixing or hoisting operation of the end plate 120 and other structures, so as to improve the stability of the battery module 100 and improve the safety performance of the battery pack.

It is noted that the number of the engaging lugs 140 can be set according to the requirement, and can be 1 or 2 for example.

Of course, the engaging lugs 140 may be provided in other numbers, which will not be described in detail herein.

In one embodiment, the engaging ears 140 are integrally formed with the end plate 120.

It should be noted that the integrally formed structure can reduce the manufacturing cost and improve the stability of the connection structure between the end plate 120 and the connection lug 140. Particularly, when the connecting lugs 140 are used for connection or hoisting, the possibility that the connecting lugs 140 are separated from the end plates 120 can be reduced due to the integrally formed structure, so that the stability of the battery module 100 in the installation and hoisting processes can be improved.

Of course, the connection lug 140 and the end plate 120 may also be made of a separate structure, so as to be made of different materials according to requirements, thereby enabling each part to exert different effects. For example, the engaging lug 140 may be made of alloy material to improve the structural strength; the endplate 120 may be plastic to reduce the overall mass of the endplate 120.

It should be understood that when the end plate 120 and the connecting lug 140 are made of two materials, they can be integrally formed, and will not be described herein.

In one embodiment, with continued reference to the structure shown in FIG. 2, the end plate 120 is provided with an evacuation notch 150 to evacuate other structures.

It should be noted that the structure arrangement enables the structures in the battery pack to be matched with each other, so that the space in the battery pack can be reasonably utilized, and the utilization rate of the space in the battery pack is favorably improved.

For example, as shown in fig. 2, relief notches 150 may be provided at the corners of the end plate 120 to relieve the connector. It should be appreciated that the connectors are used to connect low voltage wiring harnesses within the module body 110 to enable the acquisition of voltage and temperature signals within the module body 110. Alternatively, as shown in fig. 2, the avoiding notch 150 may be disposed in other areas of the end plate 120 to avoid other structures in the module body 110.

It should be noted that the function, the number of the installation positions and the installation number of the avoidance missing portion 150 can be set according to the requirement, and are not limited to the structure shown in fig. 2. As shown in fig. 4 and 5, the end plate 120 is provided with only one avoidance recess 150, and the avoidance recess 150 is used to avoid the leading end of the heating film.

It should be understood that, of course, through holes may be provided in the end plate 120 to allow for attachment of other structures. Illustratively, as shown in fig. 4 and 5, the end plate 120 is provided with a through hole through which the external control harness is fixed, and the external control harness is connected to the outlet of the heating film.

In one embodiment, an insulating structure may be provided on the end plate 120 and/or the protective support 130. Illustratively, the insulating structure may be one or more of an insulating coating, an insulating film, or an insulating tape.

In another embodiment, endplate 120 is made of an insulating material. It should be understood that end plate 120 may be made partially of an insulating material or entirely of an insulating material. When the end plate 120 is made of an insulating material as a whole, the insulating property between the end plate 120 and the protective holder 130 can be improved better, and at the same time, the end plate 120 can also be used as an insulating plate to insulate the module body 110 from other structures.

Illustratively, when the end plate 120 is made of an insulating material, the insulating material may be selected from one or more of PC (polycarbonate), PP (polypropylene), or a composite of PC and ABS (acrylonitrile butadiene styrene copolymer).

In one embodiment, with continued reference to the structure shown in fig. 2, a nut 131 is embedded in the protective support 130 to facilitate connection of the first polarity terminal 111 or the second polarity terminal 112 with other structures.

In the case of the first polarity terminal 111, when the first polarity terminal 111 is made of a different material from that of the other structure, the material and the melting point are different, so that the two terminals cannot be connected by welding. At this time, the first polarity leading-out end 111 can be connected with other structures by connecting the nut 131 pre-embedded in the protective support 130 with a bolt.

The embodiment of the application also provides a battery pack. Fig. 6 is a schematic structural diagram of a battery pack according to an embodiment of the present application, and the battery pack includes the battery module 100 according to any of the above-mentioned technical solutions, as shown in fig. 6.

It should be noted that, referring to the structure shown in fig. 6 in combination with fig. 1-3, in the battery pack provided in the embodiment of the present application, two end plates 120 are disposed opposite to each other and on both sides of the module body 110, and the protective holder 130 of each end plate 120 is disposed opposite to the protective holder 130 of the other end plate 120 along a diagonal line of the module body 110.

Since the protective supports 130 of the two end plates 120 are diagonally opposite to each other, the two end plates 120 can be arranged to have the same structure, so that the end plates 120 of the same specification can be used for installation, thereby reducing the production cost of the battery module 100; the end plate 120 and the protective support 130 are integrally formed, so that the stability of the whole structure of the end plate 120 can be improved, and the stability of the protective support 130 after being connected with other structures can be improved.

When installing battery module 100 in this application embodiment provides the battery package, because battery module 100 both sides end plate 120 structure is the same, so need not to distinguish the specification of end plate 120 when the installation, can save the manual identification process in the installation to can promote battery module 100's assembly efficiency.

In one embodiment, the battery pack provided by the embodiment of the present application includes at least three battery modules 100 arranged in sequence. It is noted that the arrangement direction of the battery modules 100 forms a second direction perpendicular to the first direction as exemplarily shown in fig. 6 and 7, or parallel to the first direction as exemplarily shown in fig. 8.

Illustratively, as shown in fig. 6 and 7, taking the second direction perpendicular to the first direction as an example, in the second direction, in every three battery modules 100: the battery module 100 located at the middle position is connected to the previous battery module 100 through one conductive member 200, and the battery module 100 located at the middle position is connected to the next battery module 100 through another conductive member 200, and the two conductive members 200 have the same structure. It should be understood that the two conductive members 200 have the same structure, which means: the specifications are consistent, such as length, material and the like.

It should be noted that, since the two protective holders 130 in each battery module 100 are diagonally disposed, the two conductive members 200 connected between each battery module 100 and the other battery modules 100 may have the same size and structure. When the conductive members 200 of each battery module 100 connected to other battery modules 100 have the same structure, the conductive members 200 of the same specification can be selected for connection, so as to reduce the manufacturing cost. Moreover, when the conductive devices 200 of the same specification are adopted, the situation that the conductive devices 200 of the wrong size are mistakenly assembled can be avoided, and therefore the assembling efficiency can be improved.

With continued reference to the structure shown in fig. 7, two adjacent battery modules 100 may be connected in series or in parallel by using the conductive member 200. For example, when the battery modules 100 are connected in series, taking the battery module 100 located at the middle position as an example, the second polarity terminal 112 of the battery module 100 is connected to the first polarity terminal 111 of another battery module 100 through one conductive member 200, and the first polarity terminal 111 of the battery module 100 is connected to the second polarity terminal 112 of another battery module 100 through another conductive member 200. Of course, when the battery modules 100 are connected in parallel, the first polarity terminal 111 of one battery module 100 is connected to the first polarity terminal 111 of another battery module 100 through the conductive member 200.

In addition, there are some battery modules 100 connected in series in the battery pack, and some battery modules 100 may be connected in parallel, which may be specifically set according to the requirement, and will not be described herein again.

In one embodiment, the conductive member 200 is a copper bar. It should be noted that the copper bar can promote the electric conduction rate to promote the electric conduction property of battery package.

When the first and second polarity terminals 111 and 112 are made of aluminum, each of the first and second polarity terminals 111 and 112 and the conductive member 200 may be fastened by a bolt to be electrically connected due to the difference between melting points of aluminum and copper. Specifically, with continued reference to the structure shown in fig. 6 and 7, each terminal is placed on the abutting table of the corresponding protective support 130, and the through hole of the terminal is aligned with the nut 131; the conductive piece 200 is arranged on one side of the leading-out end departing from the butting table, the through hole of the conductive piece 200 is aligned with the through hole of the leading-out end, the bolt penetrates through the conductive piece 200 and the through hole of the leading-out end and then is screwed into the nut 131, and meanwhile, the conductive piece 200 and the leading-out end are fastened and butted by the head of the bolt.

In one embodiment, the module body 110 includes a battery, which is a cylindrical battery.

It should be noted that the cylindrical battery has less internal expansion, so the end plate 120 may be an end insulating plate, and the strength requirement is less.

In one embodiment, each cell includes a first electrode terminal and a second electrode terminal.

In one embodiment, the first electrode terminal and the second electrode terminal are both terminals, and the first electrode terminal and the second electrode terminal are located on two opposite sides of the battery. It is to be understood that the arrangement direction of the two electrode terminals in each battery may be along the second direction, and in particular, each battery may be arranged laterally, provided that the bottom of the battery case is the bottom surface, when the battery module 100 is seated in the battery case. Of course, each cell may also be arranged vertically, which is not described in detail herein.

The first electrode terminal and the second electrode terminal have opposite polarities and are insulated from each other. Specifically, when the first electrode terminal is a positive polarity terminal, the second electrode terminal is a negative polarity terminal, whereas when the first electrode terminal is a negative polarity terminal, the second electrode terminal is a positive polarity terminal.

In one embodiment, the module body 110 further includes a plurality of bus bars, and the plurality of bus bars are connected to the module body 110 to form a bus string, so as to transmit electrical signals in the module body 110. It should be noted that the first polarity terminal 111 and the second polarity terminal 112 may be formed by bending a portion of the bus bar at the edge of the bus bar, or may be formed by a separate terminal. It should be understood that a separate lead out row connects the ends of the bus string to enable signal derivation within the bus string.

It is noted that the following principles are generally followed when arranging the plurality of batteries within the battery module 100: more cells are arranged in one direction to form the long sides of the module body 110, and less cells are arranged in the other direction to form the short sides of the module body 110; a plurality of battery modules 100 in the battery pack are arranged in the short side direction so as to be conveniently arranged in the battery case.

Illustratively, as shown in fig. 6, each battery module 100 is large in size, forming a long side, in the first direction; in the second direction, each battery module 100 is small in size, forming a short side, and the end plates 120 may be placed at the short side of the battery module 100. Of course, the end plate 120 may be disposed at the long side of the battery module 100 according to the requirement, and will not be described herein.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims. It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A battery module (100), comprising:

a module body (110);

two end plates (120) which are oppositely arranged, wherein the module body (110) is arranged between the two end plates (120); each end plate (120) is provided with an integrally formed protective support (130), and the two protective supports (130) of the end plates (120) are arranged oppositely along the diagonal line of the module body (110).

2. The battery module (100) according to claim 1, wherein the module body (110) has a first polarity outlet (111) and a second polarity outlet (112) of opposite polarities, wherein:

the first polarity leading-out end (111) and the second polarity leading-out end (112) are oppositely arranged along the diagonal line of the module body (110);

at least a portion of the first polarity lead (111) is disposed in the guard support (130) of one of the end plates (120) and at least a portion of the second polarity lead (112) is disposed in the guard support (130) of the other end plate (120).

3. The battery module (100) according to claim 1, wherein the side of the end plate (120) facing away from the module body (110) is provided with a connecting lug (140).

4. The battery module (100) according to claim 3, wherein the connecting lug (140) and the end plate (120) are of an integrally formed structure.

5. The battery module (100) according to claim 1, wherein the end plate (120) is provided with an escape notch (150).

6. The battery module (100) according to any one of claims 1-5, wherein the end plate (120) is an insulating end plate (120).

7. A battery pack, characterized by comprising the battery module (100) according to any one of claims 1 to 6.

8. The battery pack according to claim 7, comprising at least three battery modules (100) arranged in sequence, wherein in each three battery modules (100) in the arrangement direction:

the battery module (100) at the middle position is connected with the previous battery module (100) through a conductive member (200), and the battery module (100) at the middle position is connected with the next battery module (100) through another conductive member (200);

the two conductive members (200) have the same structure.

9. The battery pack according to claim 8, wherein the arrangement direction of at least three battery modules (100) is parallel or perpendicular to the arrangement direction of two end plates (120) in each battery module (100).

10. The battery pack according to any one of claims 7-9, wherein the module body (110) comprises a battery, and the battery is a cylindrical battery.

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