CN216850184U - Battery pack - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery pack. The battery pack includes: the battery box body is provided with a limiting surface; the end plate is arranged in the box body; the end plate is provided with a limiting part, and a limiting space along the direction vertical to the limiting surface is formed between the limiting part and the limiting surface; the protection support is arranged on one side of the end plate, and at least part of the protection support is located in the limiting space. The battery pack can be flexibly and reliably fixed and protected through a limiting space. Particularly, this battery package carries on spacingly through spacing space to the protection support, can effectively spacing protection support's removal space to avoid protecting the support and break away from preset position in the use, thereby can promote the security performance and the life of the battery package that this application provided. Meanwhile, independent connecting pieces do not need to be arranged among the protective support, the battery box body and the end plates, so that the internal structure of the battery pack can be simplified, and the space utilization rate of the battery pack is improved.

Description

Battery pack

Technical Field

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

Background

In the related art, a protection support is required to be arranged inside the battery to connect and fix the output end of the plug connector or the wiring harness board assembly, and the protection support is usually fixed on the box body through a screw connection mode and the like. Because the protective support adopts the spiro union connected mode, so need holing on the box, this can lead to the processing difficulty and influence box intensity.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery pack to nimble, reliable fixed protection support.

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

provided is a battery pack including:

the battery box body is provided with a limiting surface;

the end plate is arranged in the battery box body; the end plate is provided with a limiting part, and a limiting space in the direction vertical to the limiting surface is formed between the limiting part and the limiting surface;

the protection support is arranged on one side of the end plate, and at least part of the protection support is located in the limiting space.

The application provides a battery includes battery box, end plate and protection support, and wherein, inside battery box was arranged in to end plate and protection support, and the spacing portion of end plate and the spacing face of battery box inside formed spacing space. When the installation protection support in the battery package that this application provided, can arrange the at least part of protection support in spacing space to avoid the protection support to take place the displacement along perpendicular spacing face direction.

It should be noted that, the battery package that this application provided can pass through spacing flexible, reliable fixed protection support. Particularly, the battery pack provided by the application is limited by the limiting space, the moving space of the protection support can be effectively limited, so that the protection support is prevented from being separated from the preset position in the using process, and the safety performance and the service life of the battery pack provided by the application can be improved. Meanwhile, independent connecting pieces do not need to be arranged among the protective support, the battery box body and the end plates, so that the internal structure of the battery pack can be simplified, and the space utilization rate of the battery pack is improved.

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 pack provided in an embodiment of the present application;

fig. 2 is an exploded view of an end plate and a protective support in a battery pack according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of the assembled structure of FIG. 2;

FIG. 4 is a partial cross-sectional view of the structure of FIG. 3;

FIG. 5 is a top view of the structure of FIG. 3;

fig. 6 is a schematic structural view of a partition beam in a battery pack according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of an assembly structure of the protective support and the separation beam;

fig. 8 is another schematic structural diagram of an end plate in a battery pack according to an embodiment of the present application.

The reference numerals are illustrated below:

100. a battery case; 110. a partition beam; 111. a missing part; 112. a weight-loss cavity; 200. an end plate; 210. a limiting part; 300. a protective support; 310. a recessed portion; 311. a first opening; 312. a second opening; 320. and (3) a step structure.

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 application provides a battery pack. Fig. 1 is a schematic structural diagram of a battery pack provided in an embodiment of the present application. Fig. 2 is an exploded view of the end plate 200 and shield support 300 of fig. 1. Referring to the structure shown in fig. 1 in conjunction with fig. 2, a battery pack provided in an embodiment of the present application includes:

the battery box 100, the battery box 100 has limiting surfaces;

the end plate 200, the end plate 200 is placed in the box body; the end plate 200 is provided with a limiting part 210, and a limiting space along the direction vertical to the limiting surface is formed between the limiting part 210 and the limiting surface;

the protective support 300 is arranged on one side of the end plate 200, and at least part of the protective support 300 is positioned in the limit space.

It should be understood that different "faces" in the battery case 100 may be selected to form the limiting faces according to the arrangement position of the end plate 200 in the battery case 100, so as to form the limiting space in cooperation with the limiting portion 210 of the end plate 200, and the selection of the limiting faces in the battery case 100 will be described in detail in the following structure.

It should be noted that, with continuing reference to the structures shown in fig. 1 and fig. 2, the battery pack provided by the embodiment of the present application can flexibly and reliably fix the protective seat 300 through the limiting space. Particularly, the battery pack provided by the embodiment of the application is limited by the limiting space of the protective support 300, and the moving space of the protective support 300 can be effectively limited, so that the protective support 300 is prevented from being separated from a preset position in the using process, and the safety performance and the service life of the battery pack provided by the embodiment of the application can be improved. Meanwhile, separate connecting members do not need to be arranged between the protective support 300 and the battery box 100 and between the protective support and the end plate 200, so that the internal structure of the battery pack can be simplified, and the space utilization rate of the battery pack can be improved.

It should be understood that the position-limiting portion 210 in fig. 1 and 2 is shown in a convex structure, and of course, the position-limiting portion 210 may also be a concave structure shown in fig. 8, and for example, the top surface Q of the concave structure may cooperate with the position-limiting surface of the battery case 100 to limit the position of the protective support 300.

It should be noted that the protection holder 300 may be a high voltage protection holder 300 or a low voltage protection holder 300, wherein the high voltage protection holder 300 is used for protecting the output end of the bus bar, and the low voltage protection holder 300 is used for protecting the output end of the signal acquisition, so as to ensure the reliability of the output end. It should be understood that the structure of the shield holder 300 shown in fig. 1 is only a schematic illustration, and the shield holder 300 has a receiving cavity to place an output terminal of a bus bar or an output terminal of signal acquisition, and the receiving cavity structure is not shown. When spacing space was arranged in to protection support 300, need consider the position relation that holds chamber and spacing space in the protection support 300 to the opening that avoids holding the chamber is sheltered from, and the output can't be convenient imbeds or shifts out and holds the intracavity, specifically can set up according to the demand, no longer gives unnecessary details here.

In one embodiment, the end plate 200 is fixed with the battery case 100. It should be noted that, when the end plate 200 is fixed to the battery box 100, the limiting space is substantially not changed during the use process, so as to improve the limiting effect on the protective support 300.

With continued reference to the structure shown in fig. 1 and 2, as shown in fig. 2, each end plate 200 is provided with a stopper 210. It should be understood that the stopper portion 210 is not limited to the arrangement position shown in fig. 2. Illustratively, the stopper 210 may be provided at a corner of the end plate 200. In addition, the position-limiting portion 210 and the end plate 200 may be an integrated structure to simplify the manufacturing process. Illustratively, both are formed by casting or stamping. Alternatively, the stopper 210 and the end plate 200 may be a separate structure. Illustratively, the two are connected by bonding, snapping, or the like.

Of course, each end plate 200 may be further provided with a plurality of limiting parts 210, and for example, the end plate 200 may be provided with two limiting parts 210, and each limiting part 210 of the two limiting parts 210 forms a limiting space with the limiting surface of the battery case 100 to limit one protection support 300. Specifically, one protective holder 300 may be held in both holding spaces, or the protective holder 300 may be selectively placed in one of the two holding spaces.

It should be understood that the spacing space may be greater than or equal to the size of the shield mount 300. Illustratively, as shown in fig. 2, the predetermined surface P is a stopper surface of the battery case 100, the end plate 200 and the guard holder 300 are arranged in a direction a, and a stopper space formed between the stopper portion 210 of the end plate 200 and the stopper surface of the battery case 100 extends in a direction b perpendicular to the direction a.

In a specific embodiment, along the direction b, the size of the protection holder 300 is equal to the size of the limiting space, and in this specific embodiment, the limiting space limits the protection holder 300 in the space, so as to prevent the protection holder 300 from shaking along the direction b, and further improve the limiting effect.

In another specific embodiment, the size of the spacing space is slightly larger than the size of the shield holder 300 in the direction b. In this particular embodiment, the spacing space may limit the potential for a small range of movement of shield mount 300 in direction b. It should be understood that, in this particular embodiment, along the direction b, the protective support 300 may contact with the limiting surface, and there is a certain gap with the limiting portion 210 of the end plate 200; or, along the direction b, the protective support 300 may contact with the limiting portion 210 of the end plate 200, and a certain gap exists between the protective support and the limiting surface; alternatively, a certain gap may exist between the protective holder 300 and the position-limiting portion 210 of the end plate 200 along the direction b.

Fig. 3 is a schematic view of the structure of the end plate 200 assembled with the shield support 300, and fig. 4 is a partial sectional view of the structure of fig. 3; fig. 5 is a top view of the structure of fig. 3. As shown in fig. 3, 4 and 5, when the size of the shield holder 300 in the direction b is equal to the size of the spacing space in the direction b. In one embodiment, the protection holder 300 is disposed on the position-limiting surface of the battery case 100, and the position-limiting portion 210 abuts against the protection holder 300 toward the position-limiting surface.

It should be noted that, when the limiting portion 210 abuts against the protection support 300 toward one side of the limiting surface, the limiting portion 210 applies an acting force to the protection support 300, so that the protection support 300 can be more stably placed in the limiting space, and the protection effect of the protection support 300 on the output end can be improved.

In one embodiment, to move along the multi-directional restraining shield support 300 to further enhance the restraining effect on the shield support 300. When the limiting part 210 is a convex structure, for example, as shown in fig. 2, the protective holder 300 may be provided with a concave part 310; the position-limiting portion 210 is disposed in the recess 310. Of course, when the position-limiting portion 210 is a concave structure, the protective support 300 may have a convex structure matching with the concave structure, which is not described in detail.

It should be noted that the size of the limiting portion 210 may be smaller than or equal to the size of the recess 310, and may be specifically set according to requirements, which is not described herein again.

In addition, there are many possible configurations of the recess 310 and the limiting portion 210. in one embodiment, as shown in fig. 2, the recess 310 has a first opening 311 and a second opening 312 (schematically separated by a dotted line), wherein,

the first opening 311 communicates with the second opening 312; the first opening 311 is located on one side of the protective support 300 departing from the limiting surface; the second opening 312 is located on the side of the shield holder 300 facing the end plate 200.

It should be noted that, as shown in fig. 2, this structure facilitates the insertion and extraction connection of the end plate 200 and the protective holder 300, which can improve the assembly efficiency. Specifically, the position-limiting portion 210 of the end plate 200 may be disposed in the recessed portion 310 from the first opening 311 on the side of the protection holder 300 facing away from the position-limiting surface, or the position-limiting portion 210 of the end plate 200 may be disposed inside the recessed portion 310 from the second opening 312 on the side of the protection holder 300 facing the end plate 200. For example, the protection holder 300 may be pushed into the limiting space after the end plate 200 and the battery case 100 are mounted, and at this time, the limiting portion 210 of the end plate 200 may gradually enter the recess 310 from the position of the protection holder 300 toward the second opening 312 of the end plate 200.

Of course, the recess 310 of the shield holder 300 may have only the first opening 311 or the second opening 312. Accordingly, the shape of the retainer 210 on the end plate 200 may be deformed. For example, when only the first opening 311 is provided, the stopper portion 210 of the end plate 200 may be provided in a cantilever structure to be inserted into the recess 310.

In one embodiment, the recess 310 is provided in a middle region of the shield support 300 along the direction c. It is to be understood that the direction c is perpendicular to the direction a, and perpendicular to the direction b.

It should be noted that, when the recessed portion 310 is disposed in the middle region of the protective support 300, along the direction c, and the central line of the protective support 300 is used as a boundary, the force applied to the two sides of the protective support 300 by the limiting space is more uniform, and the protective support 300 can be better limited.

In one embodiment, a beam is provided within the battery case 100. It should be noted that the beams may assist the battery case 100 to bear the expansion force of the battery, so as to enhance the strength of the battery case 100, thereby improving the stability and safety of the battery pack. Specifically, the beams are divided into edge beams and partition beams 110 according to functions, wherein the edge beams form a ring structure, and the partition beams 110 are disposed in the ring structure formed by the edge beams to partition the inner space of the battery case 100.

In one embodiment, please continue to refer to the structure shown in FIG. 1. The partition beam 110 partitions the space in the battery case 100 into at least two receiving parts M, and a top of the partition beam 110 between two adjacent receiving parts M forms a limiting surface. In other words, the shield support 300 may be provided on the top of the partition beam 110. The structure is arranged to limit the protective support 300 by using the self-separation beam 110 in the battery box 100 to match with the limiting part 210 of the end plate 200.

It should be noted that, this structural arrangement can simplify the internal structure of the battery box 100, and it is not necessary to separately provide a support structure to support the protective support 300, which can improve the space utilization rate in the battery box 100.

Specifically, in this structure, the top of the partition beam 110 forms a stopper surface. When the shield support 300 is provided, the bottom of the shield support 300 may be disposed on top of the partition beam 110. Since a downward force is applied to the protection bracket 300 when the protection bracket 300 is installed at the output end, the protection bracket 300 may move downward in the vertical direction b, and at this time, the position-limiting surface of the partition beam 110 may effectively support the protection bracket 300.

It is noted that each housing portion M houses a battery assembly, which includes a plurality of batteries. When the battery assembly is placed in the receiving portion M, the large faces of the cells in the battery assembly are parallel to the end plates 200. Of course, only one accommodating portion M may be disposed in the battery box 100 according to requirements, and will not be described herein. It should be understood that the large face of the cell refers to a plane having a relatively large area with respect to the other faces.

In one embodiment, the same protective bracket 300 can be used to connect the battery modules in two adjacent receiving portions M, so as to improve the integration of the device and save space.

It should be understood that one or two end plates 200 may be disposed in each receiving portion M, and when two end plates 200 are disposed in the receiving portion M, the two end plates 200 are disposed on two sides of the battery assembly in the direction a and are oppositely disposed to fix or protect the battery assembly.

In one embodiment, with continued reference to the structure shown in fig. 1 to 3, in two adjacent accommodating portions M, an end plate 200 is disposed in each accommodating portion M, and the end plate 200 in each accommodating portion M and the limiting surface of the same partition beam 110 form a limiting space. The leading-out terminals of two adjacent battery components can be connected through the adapter sheet.

As shown in fig. 1 to 5, when the end plates 200 are provided on both sides of each partition beam 110, a space is defined between at least one of the end plates 200 and the top of the partition beam 110. When both end plates 200 form a spacing space with the top of the partition beam 110, the shield support 300 may be selectively placed in one spacing space, or may be placed in both spacing spaces. When two placing spaces formed by the two end plates 200 are simultaneously arranged in the same protective support 300, the two placing spaces are matched with each other and limit the protective support 300, so that the limiting effect on the protective support 300 can be improved.

It should be noted that the positions of the limiting parts 210 on the end plates 200 on each side of the partition beam 110 are the same or different, and likewise, the shapes of the limiting parts 210 may also be the same or different, and may be specifically set according to the requirements, and are not described herein again.

In an embodiment, please continue to refer to the structure shown in fig. 6, the separation beam 110 has a notch 111, for example, the notch 111 in fig. 6 is shown in the form of a notch formed by cutting or shearing, and of course, the notch 111 may also be a groove structure disposed on the separation beam 110, which is not described herein again.

With continued reference to the structure shown in fig. 6, the protective support 300 may be disposed on the notch 111 shown in fig. 6, and at this time, the bottom surface P of the notch 111 forms a limiting surface along the direction b. It should be understood that the partition beam 110 may have a plurality of the cutaway portions 111, and the shield support 300 may be selectively placed in one of the cutaway portions 111.

It should be noted that, the corner of the partition beam 110 is provided with the notch 111, so as to form an avoiding structure, and when the protection support 300 is placed in the notch 111, the space occupied by the protection support 300 in the battery box 100 can be reduced, so that the space utilization rate in the battery box 100 can be improved, and the space available for placing the battery assembly can be increased in a limited space.

In one embodiment, the indentation 111 is located at the top corner of the partition beam 110. It should be noted that, since the bus bar is located at the side of the battery pack, when the notch 111 is located at the top corner of the partition beam 110, the conductive member can be conveniently led out.

In one embodiment, with continued reference to the structure shown in fig. 6, the partition beam 110 may be provided with a cavity structure as a weight-reducing cavity 112 therein to reduce the overall weight of the battery case 100. It is understood that the cavity structure inside the partition beam 110 may be one or more. When the cavity structure is specifically arranged, the related conditions such as weight reduction and structural strength need to be considered. In preparing the partition beams 110, the integrated partition beams 110 may be formed by extruding a plate material, or the partition beams 110 may be formed by cutting.

In one embodiment, continuing with the structure shown in fig. 6, the indentation 111 communicates with the weight-reducing chamber 112, and at least a portion of the shield support 300 is located within the weight-reducing chamber 112.

It should be noted that the protective holder 300 can be partially embedded in the weight-reducing cavity 112 to further reduce the space occupied by the protective holder 300 in the battery box 100, thereby improving the space utilization rate of the battery pack.

In one embodiment, a limiting structure is provided between the protective holder 300 and the inner wall of the weight-reducing cavity 112 to limit the maximum size of the protective holder 300 extending into the weight-reducing cavity 112.

It should be noted that the limiting structure may limit the maximum size of the protective holder 300 inserted into the weight-reducing cavity 112, and avoid the insertion between the protective holder 300 and the weight-reducing cavity 112. It should be understood that "over-insertion" means that the retaining structure is inserted too far into the weight-reduction cavity 112, such that the output end cannot be inserted into or removed from the receiving cavity of the protective bracket 300.

In a specific embodiment, as shown in fig. 7, a step structure 320 may be provided at a portion of the shield holder 300 for being inserted into the weight-reducing cavity 112, and an abutment surface may be formed at one side of the step structure 320 to abut on an end surface of the sidewall forming the weight-reducing cavity 112. Alternatively, a limit boss may be formed on the inner wall of the lightening cavity 112 to limit the insertion size of the shield holder 300.

In one embodiment, an insulating structure may be provided on the end plate 200 and/or the shield holder 300. Illustratively, the insulating structure may be one or more of an insulating coating, an insulating film, or an insulating tape.

In another embodiment, the end plate 200 is made of an insulating material. It should be understood that the end plate 200 may be made partially of an insulating material or entirely of an insulating material. When the end plate 200 is entirely made of an insulating material, the insulating property between the end plate 200 and the protective holder 300 can be improved more, and at the same time, the end plate 200 can also be used as an insulating plate to insulate the battery pack from the battery case 100.

Illustratively, when the end plate 200 is made of an insulating material, the insulating material may be selected as one or more of PC (polycarbonate), or PP (polypropylene), or a composite material of PC and ABS (acrylonitrile butadiene styrene copolymers).

In one embodiment, the battery assembly in the battery pack is coupled with the end plate 200 to form a battery module. Specifically, a plurality of batteries are fixed by the end plates 200 and the side plates to form a battery module. Of course, the battery pack may not have a side plate structure, and only the end plate 200 may be used to separate the battery assembly from the battery case 100. The battery includes a cell and an electrolyte, and is the smallest unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged.

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 that have been 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 pack, comprising:

the battery box body (100), the battery box body (100) has a limiting surface;

an end plate (200), the end plate (200) being disposed within the battery case (100); the end plate (200) is provided with a limiting part (210), and a limiting space in the direction vertical to the limiting surface is formed between the limiting part (210) and the limiting surface;

the protective support (300) is arranged on one side of the end plate (200), and at least part of the protective support (300) is located in the limiting space.

2. The battery pack according to claim 1, wherein the stopper portion (210) abuts against the protective holder (300) on a side facing the stopper surface.

3. The battery pack according to claim 1 or 2, wherein the stopper portion (210) is a projection structure provided to the end plate (200); the protective support (300) is provided with a concave part (310); the raised structures are disposed within the recesses (310).

4. The battery pack according to claim 3, wherein the recess (310) has a first opening (311) and a second opening (312), wherein,

the first opening (311) communicates with the second opening (312);

the first opening (311) is positioned on one side, away from the limiting surface, of the protective support (300);

the second opening (312) is located on the side of the protective support (300) facing the end plate (200).

5. The battery pack according to claim 1 or 2, wherein a separation beam (110) is provided in the battery case (100), the separation beam (110) separates the space in the battery case into at least two accommodating portions, and the top of the separation beam (110) between two adjacent accommodating portions forms the limiting surface.

6. The battery pack according to claim 5, wherein the end plate (200) is provided in each of two adjacent receiving portions, and the end plate (200) in each receiving portion forms one limiting space with a limiting surface of the same partition beam (110).

7. Battery pack according to claim 6, characterized in that the partition beam (110) has a cutout (111); the protective support (300) is arranged on the notch part (111).

8. The battery pack according to claim 7, wherein the notch (111) is provided at a top corner of the partition beam (110).

9. The battery pack according to claim 8, wherein the partition beam (110) has a weight-reducing cavity (112), the cutout (111) communicates with the weight-reducing cavity (112), and at least a portion of the protective holder (300) is located in the weight-reducing cavity (112).

10. The battery pack according to claim 9, wherein a limiting structure is provided between the protective holder (300) and the inner wall of the weight-reducing cavity (112) to limit the maximum size of the protective holder (300) extending into the weight-reducing cavity (112).

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