CN219203387U - Battery pack - Google Patents

Abstract

The utility model relates to the technical field of batteries, and provides a battery pack, which comprises: the box, first output support, second output support and protection casing, first output support sets up in the box, and the second output support sets up in the box, and the protection casing is connected in the box to protection effect of protection casing has been guaranteed to protection first output support and second output support simultaneously.

Description

Battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack.

Background

In the related art, the battery pack can include a plurality of output supports, and the output support can be used for supporting electrically conductive output, in order to guarantee the security performance of electrically conductive output, needs to protect through the protection casing more, because the structure and the hookup location restriction of protection casing, the protection effect of protection casing is not fine.

Disclosure of Invention

The utility model provides a battery pack to improve the service performance of the battery pack.

The present utility model provides a battery pack, comprising:

a case;

the first output end support is arranged in the box body;

the second output end support is arranged in the box body;

the protection casing, the protection casing connect in the box is in order to protect simultaneously first output support with the second output support.

According to the battery pack disclosed by the embodiment of the utility model, as the protective cover is connected to the box body and is not directly connected with the first output end support and the second output end support, when the first output end support and the second output end support are positioned at different heights and have a height difference, the protective cover cannot be influenced, namely the connection position of the protective cover on the box body cannot be moved, the protection effect of the protective cover is ensured, and the safety of the battery pack is further 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 have different arrangements as known in the art. Furthermore, in the drawings, like reference numerals designate identical or similar parts throughout the several views.

Wherein:

fig. 1 is a schematic view illustrating a structure of a battery pack according to an exemplary embodiment;

FIG. 2 is a schematic diagram illustrating an assembled shield according to an exemplary embodiment;

FIG. 3 is a schematic diagram illustrating the configuration of an output and an output support according to an exemplary embodiment;

FIG. 4 is a schematic diagram of the structure of an output mount according to an exemplary embodiment;

FIG. 5 is a schematic top view of a protective cover according to an exemplary embodiment;

fig. 6 is a schematic diagram of the bottom structure of a protective cover according to an exemplary embodiment.

The reference numerals are explained as follows:

10. a case; 11. a frame; 111. a first space; 112. a second space; 12. a dividing beam; 121. an avoidance space;

20. a first output port support; 21. a first output terminal;

30. a second output port support; 31. a second output terminal;

40. a protective cover; 410. a cover body; 420. a fixed arm; 430. a positioning arm; 440. reinforcing ribs;

50. a first end plate;

60. a second end plate;

70. a single battery;

80. and a conductive bar.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying 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, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" refers to two or more than two; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the/the" object or "an" object are likewise intended to mean one of a possible plurality of such objects.

Unless specified or indicated otherwise, the terms "connected," "fixed," and the like are to be construed broadly and are, for example, capable of being fixedly connected, detachably connected, or integrally connected, electrically connected, or signally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in the present disclosure may be understood by those skilled in the art according to the specific circumstances.

Further, in the description of the present disclosure, it should be understood that the terms "upper", "lower", "inner", "outer", and the like, as described in the example embodiments of the present disclosure, are described with the angles shown in the drawings, and should not be construed as limiting the example embodiments of the present disclosure. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.

Embodiments of the present application provide a battery pack, as shown in fig. 1 to 6, including: the box 10, first output support 20, second output support 30 and protection casing 40, first output support 20 sets up in box 10, and second output support 30 sets up in box 10, and protection casing 40 connects in box 10 to protection casing 20 and second output support 30 simultaneously.

The battery pack provided by the application, because the protection casing 40 is connected to the box 10, the protection casing 40 is not directly connected with the first output end support 20 and the second output end support 30, and when the first output end support 20 and the second output end support 30 are located at different heights and have height differences, the protection casing 40 cannot be influenced, namely, the connection position of the protection casing 40 on the box 10 cannot be moved, the protection effect of the protection casing 40 is guaranteed, and then the safety of the battery pack is improved.

Specifically, as shown in fig. 1 and 2, the battery pack further includes: a plurality of unit cells 70. The plurality of unit cells 70 are disposed in the case 10, and a stacking direction of the plurality of unit cells 70 is perpendicular to a large surface of the unit cells 70. By the stacking direction of the plurality of unit cells 70 being perpendicular to the large surface of the unit cells 70, the space occupied after the plurality of unit cells 70 are stacked can be made small.

The large surface of the unit cell 70 may be regarded as the surface of the unit cell 70 having the largest area, and further, the large surface of the unit cell 70 may be regarded as the surface of the unit cell 70 having the largest heat generation, for example, when the unit cell 70 is a square cell, the unit cell 70 includes two opposite large surfaces.

Among them, the unit cell 70 includes an electric core and an electrolyte, and is a minimum 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 portion 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 are interchangeable. The electric core is arranged in the battery shell.

The single batteries are laminated batteries, so that the battery is convenient to group and long in length can be obtained through processing. Specifically, the battery cell is a laminated battery cell, and the battery cell is provided with a first pole piece, a second pole piece opposite to the first pole piece and a diaphragm sheet arranged between the first pole piece and the second pole piece, which are mutually laminated, so that a plurality of pairs of the first pole piece and the second pole piece are stacked to form the laminated battery cell.

Alternatively, the unit cell may be a wound cell, that is, a first pole piece, a second pole piece opposite to the first pole piece, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a wound cell.

The single battery can be square battery, namely the single battery can be a quadrangular battery, the quadrangular battery mainly refers to a prismatic shape, whether each side of the prismatic is a straight line with strict meaning is not strictly limited, and corners between sides are not necessarily right angles and can be arc transition. In certain embodiments, it is not excluded that the battery may be a cylindrical battery.

Specifically, as shown in fig. 4, the battery pack further includes: and a conductive bar 80. The conductive bar 80 is electrically connected to at least two unit cells 70, and the conductive bar 80 is located between the unit cells 70 and the side walls of the case 10. The electrodes of the plurality of unit cells 70 are led out through the conductive bars 80.

Specifically, as shown in fig. 1 and 2, the case 10 includes: a frame 11 and a dividing beam 12. The frame 11 is formed with an accommodating space, and the partition beam 12 is disposed in the accommodating space to partition the accommodating space into a first space 111 and a second space 112. Wherein the shield 40 is attached to the dividing beam 12. The first output terminal holder 20 and the second output terminal holder 30 are positioned in the receiving space formed by the frame 11, and the protection cover 40 is connected to the partition beam 12, so that the protection cover 40 is not directly connected to the first output terminal holder 20 and the second output terminal holder 30, and the protection cover 40 is not affected when the first output terminal holder 20 and the second output terminal holder 30 are positioned at different heights.

Wherein, a plurality of single batteries 70 are disposed in the first space 111, and a plurality of single batteries 70 are disposed in the second space 112. The electrodes of the plurality of unit cells 70 in the first space 111 are serially connected and led out through one conductive bar 80, and the electrodes of the plurality of unit cells 70 in the second space 112 are serially connected and led out through the other conductive bar 80.

Specifically, as shown in fig. 3, the conductive strip 80 located in the first space 111 is connected to the first output terminal 21, the conductive strip 80 located in the second space 112 is connected to the second output terminal 31, the first output terminal 21 is located on the first output terminal support 20, and the second output terminal 31 is located on the second output terminal support 30. Through the protection casing 40 of connecting on box 10, be located simultaneously on first output support 20 and second output support 30, i.e. be located on first output 21 and second output 31, can form the protection to first output 21 and second output 31 simultaneously, when first output 21 and second output 31 are in the difference in height, can not cause the influence to protection casing 40, guaranteed protection casing 40's protection effect.

Wherein, the first output end 21 is provided with a through hole, the first output end support 20 is provided with a threaded hole, and the first output end 21 is fixed on the first output end support 20 through a screw; the second output end 31 is provided with a through hole, the second output end support 30 is provided with a threaded hole, and the second output end 31 is fixed on the second output end support 30 through a screw. The threaded hole of the first output end support 20 may be formed by embedding a nut in the first output end support 20, or the threaded hole of the first output end support 20 may be a threaded hole directly formed on the support body; the threaded hole of the second output port holder 30 may be formed by embedding a nut in the second output port holder 30, or the threaded hole of the second output port holder 30 may be a threaded hole formed directly on the holder body.

Specifically, as shown in fig. 2-4, the battery pack also includes a first end plate 50. The first end plate 50 is disposed in the first space 111, and the first output port holder 20 is disposed on the first end plate 50. By having the first output port mount 20 disposed on the first end plate 50, the shield 40 is attached to the dividing beam 12 such that the shield 40 is not in hard-wired relationship with the first output port mount 20, thereby making the first output port mount 20 not to affect the mounting position of the shield 40.

Wherein the first output end support 20 and the first end plate 50 are integrally formed. By integrating the first output end support 20 and the first end plate 50, the structural strength of the first output end support 20 is improved, and the position accuracy of the first output end support 20 relative to the first end plate 50 is ensured. Of course, the first output support 20 and the first end plate 50 may be separate structures, for example, the first output support 20 and the first end plate 50 are connected together by welding, bonding, clamping, screwing, or the like.

Specifically, as shown in fig. 2-4, the battery pack also includes a second end plate 60. The second end plate 60 is disposed in the second space 112 and the second output port mount 30 is disposed on the second end plate 60. By having the second output port mount 30 disposed on the second end plate 60, the shield 40 is attached to the dividing beam 12 such that the shield 40 is not in hard-wired relation with the second output port mount 30, thereby making the second output port mount 30 not to affect the mounting position of the shield 40.

Wherein the second output port mount 30 is of unitary molded construction with the second end plate 60. By integrating the second output end support 30 and the second end plate 60 into a molded structure, the structural strength of the second output end support 30 is improved, and the positional accuracy of the second output end support 30 relative to the second end plate 60 is ensured. Of course, the second output end support 30 and the second end plate 60 may be separate structures, for example, the second output end support 30 and the second end plate 60 are connected together by welding, bonding, clamping, screwing, or the like.

Wherein the first output port holder 20 and the second output port holder 30 are disposed opposite to each other. The first output end support 20 is disposed on the first end plate 50, the second output end support 30 is disposed on the second end plate 60, and the first output end support 20 and the second output end support 30 are disposed oppositely through the first output end support 20 and the second output end support 30, so that the first output end support 20 and the second output end support 30 can be protected simultaneously through the protection cover 40.

Specifically, the first output end 21 and the second output end 31 may be high-voltage output ends, and the first output end support 20 and the second output end support 30 are both high-voltage output end supports.

Specifically, as shown in fig. 2 to 4, the partition beam 12 is provided with an escape space 121, and the first output port mount 20 and the second output port mount 30 are located in the escape space 121. Through set up on the dividing beam 12 and dodge the space 121, make first output support 20 and second output support 30 be located and dodge the space 121, after assembling protection casing 40 in first output support 20 and second output support 30 top, protection casing 40 can be located and dodge the space 121 to avoid protection casing 40 too outstanding dividing beam 12 to cause the overall dimension increase of battery package.

Wherein, the first output end support 20, the second output end support 30, the first output end 21 and the second output end 31 are located in the avoidance space 121, and the shape and the size of the avoidance space 121 can be matched with those of the protection cover 40, so that the protection cover 40 and the separation beam 12 cooperate to form a more regular battery pack shape.

Specifically, after the protective cover 40 is disposed on the first output end support 20 and the second output end support 30, the first output end support 20, the second output end support 30, the first output end 21 and the second output end 31 can be bent to cover, that is, the front projection of the protective cover 40 on the bottom plate of the battery pack completely covers the front projection of the first output end support 20, the second output end support 30, the first output end 21 and the second output end 31 on the bottom plate of the battery pack; or, after the protective cover 40 is disposed on the first output end support 20 and the second output end support 30, the first output end 21 and the second output end 31 can be bent to cover, that is, the front projection of the protective cover 40 on the bottom plate of the battery pack completely covers the front projection of the first output end 21 and the second output end 31 on the bottom plate of the battery pack.

Specifically, the shield 40 is detachably connected to the case 10. The protection cover 40 is detachably connected with the box body 10, namely, the protection cover 40 is detachably connected with the separation beam 12, so that the protection cover 40 is convenient to mount and dismount, the assembly position of the first output end 21 on the first output end support 20 is convenient to adjust, and the assembly position of the second output end 31 on the second output end support 30 is convenient to adjust.

Wherein, the protection cover 40 is clamped to the case 10. The purpose that the protective cover 40 is clamped on the box body 10 can be achieved by arranging matched clamping structures on the protective cover 40 and the partition beam 12 of the box body 10 and matching clamping hooks on the protective cover 40 and the partition beam 12. For example, a plurality of clamping columns are arranged on the protective cover 40, clamping seats are arranged at corresponding positions on the separation beam 12, and the protective cover 40 and the separation beam 12 are clamped in the clamping seats in a one-to-one correspondence manner through the plurality of clamping columns; or, a plurality of clamping seats are arranged on the protective cover 40, clamping columns are arranged at corresponding positions on the separation beam 12, and the protective cover 40 and the separation beam 12 are clamped in the clamping seats in a one-to-one correspondence manner through the clamping columns; or, a plurality of clamping seats and a plurality of clamping columns are arranged on the protective cover 40, the clamping columns and the clamping seats are arranged at corresponding positions on the separation beam 12, and the protective cover 40 and the separation beam 12 are clamped in the clamping seats in a one-to-one correspondence manner through the plurality of clamping columns. The application does not limit the specific form of the clamping structure, and all the changes on the clamping structure belong to the protection scope of the application.

The protection cover 40 may also be inserted into the case 10. The purpose of plugging the protective cover 40 on the box body 10 can be achieved by arranging matched plugging structures on the protective cover 40 and the partition beam 12 of the box body 10 and matching the protective cover 40 with the matched plugging structures on the partition beam 12. For example, a plurality of sliding rails are arranged on the protective cover 40, sliding grooves are arranged at corresponding positions on the separation beam 12, and the protective cover 40 and the separation beam 12 are inserted into the sliding grooves in a one-to-one correspondence manner through the sliding rails; or, a plurality of sliding grooves are formed in the protective cover 40, sliding rails are arranged at corresponding positions on the separation beam 12, and the protective cover 40 and the separation beam 12 are inserted into the sliding grooves in a one-to-one correspondence manner through the sliding rails; or, a plurality of sliding rails and a plurality of sliding grooves are arranged on the protective cover 40, the sliding grooves and the sliding rails are arranged at corresponding positions on the separation beam 12, and the protective cover 40 and the separation beam 12 are inserted into the sliding grooves in a one-to-one correspondence manner through the sliding rails.

Of course, the protection cover 40 and the case 10 may be detachably or fixedly connected by bonding, welding, riveting, screwing, etc., which is not limited in this application.

Wherein, the protection cover 40 is an insulation protection cover 40, the insulation protection cover 40 can be formed by insulation plastic, the shaping of the protection cover 40 is convenient, the process is simple, and the material cost is low.

In one embodiment, as shown in fig. 2, 5 and 6, the shield 40 includes a shield body 410, a fixed arm 420 and a positioning arm 430.

The cover 410 is formed with two accommodating spaces for accommodating the first output terminal 21 and the second output terminal 31, respectively. The shape of the two receiving spaces is adapted to the shape of the first output 21 on the first output support 20 and to the shape of the second output 31 on the second output support 30. Since the first output 21 is located on the first output support 20 in the same shape and size as the second output 31 is located on the second output support 30, the two receiving spaces are also the same in shape and size.

Wherein, form between two and dodge the space 121 that receive the space, dodge the space 121 and can be convenient for follow-up follow protection casing 40 top and walk the line, avoid protection casing 40 to jack-up for walk the line and can be located same horizontal plane on dividing beam 12 and protection casing 40.

Wherein, the fixed arm 420 is connected with the cover 410, and the one end that the fixed arm 420 kept away from the cover 410 is provided with the joint structure, when protection casing 40 and separating beam 12 assembly, is equipped with the fixed orifices on separating beam 12, can stretch into the fixed orifices with the one end that the fixed arm 420 kept away from the cover 410, and through the elastic force of fixed arm 420 for the joint structure of tip and the fixed orifices joint of separating beam 12, thereby avoided the fixed arm 420 to withdraw from the fixed orifices by oneself, guaranteed the connection reliability of protection casing 40 and separating beam 12.

Wherein, two fixing arms 420 are provided, which are oppositely arranged on the cover body 410, and when the protective cover 40 is assembled with the separation beam 12, the two fixing arms 420 are deformed in opposite directions through elastic deformation so as to simultaneously extend into the fixing holes of the separation beam 12; the clamping structure is a protrusion formed at the end part of the fixing arm 420, after the two fixing arms 420 extend into the fixing holes of the separation beam 12, the protrusion at the end part of the fixing arm 420 is located in the fixing hole, and the fixing arm 420 enables the protruding step surface at the end part of the fixing arm 420 to form the abutting connection with the edge of the fixing hole of the separation beam 12 through elastic restoring force, so that the limit that the fixing arm 420 automatically withdraws from the fixing hole is formed.

Wherein, the side of the protrusion of the end of the fixing arm 420 facing away from the cover body 410 may be an inclined surface, and the inclined surface forms a guide for the end of the fixing arm 420 to extend into, so as to facilitate the assembly of the protection cover 40 on the separation beam 12.

Wherein, the positioning arm 430 is connected with the cover body 410, and the positioning of the installation of the protective cover 40 on the separation beam 12 is realized through the positioning arm 430. The length of the positioning arm 430 is smaller than that of the fixing arm 420, after the fixing arm 420 extends into the fixing hole of the separation beam 12, the end portion of the positioning arm 430 is abutted against the surface of the separation beam 12, so that the fixing arm 420 continues to extend into the fixing hole of the separation beam 12, and the positioning between the protective cover 40 and the separation beam 12 is achieved.

As shown in fig. 6, four positioning arms 430 are disposed at four corner positions of the cover 410. Of course, the positioning arm 430 may be provided with one, two, three, five or more, which is not limited in this application.

Therein, as shown in fig. 6, a reinforcing rib 440 is provided on the inner side of the fixing arm 420. Since the fixing arm 420 is required to be elastically deformed to extend into the fixing hole of the separation beam 12, the strength of the fixing arm 420 can be improved by providing the reinforcing rib 440 on the inner side of the fixing arm 420, the breakage of the fixing arm 420 is avoided, and the reliability of the protective cover 40 is improved.

The battery pack can be applied to electric equipment, and the electric equipment can be a vehicle or an energy storage device.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the utility model 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. The specification and example embodiments are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (11)

1. A battery pack, comprising:

a case (10);

the first output end support (20) is arranged in the box body (10);

the second output end support (30) is arranged in the box body (10);

-a protective cover (40), said protective cover (40) being connected to said tank (10) for protecting said first output support (20) and said second output support (30) simultaneously.

2. The battery pack according to claim 1, wherein the case (10) includes:

a frame (11), the frame (11) being formed with an accommodation space;

a partition beam (12), the partition beam (12) being disposed within the accommodation space to partition the accommodation space into a first space (111) and a second space (112);

wherein the shield (40) is connected to the dividing beam (12).

3. The battery pack according to claim 2, further comprising a first end plate (50), the first end plate (50) being disposed in the first space (111), the first output support (20) being disposed on the first end plate (50).

4. A battery pack according to claim 3, wherein the first output port holder (20) is of unitary construction with the first end plate (50).

5. A battery pack according to claim 3, further comprising a second end plate (60), the second end plate (60) being disposed within the second space (112), the second output port mount (30) being disposed on the second end plate (60);

wherein the first output end support (20) and the second output end support (30) are arranged opposite to each other.

6. The battery pack of claim 5, wherein the second output port mount (30) is of unitary construction with the second end plate (60).

7. The battery pack according to claim 2, wherein the partition beam (12) is provided with an avoidance space (121), and the first output terminal support (20) and the second output terminal support (30) are located in the avoidance space (121).

8. The battery pack of claim 1, wherein the first output terminal support (20) and the second output terminal support (30) are both high voltage output terminal supports.

9. The battery pack according to claim 1, wherein the protective cover (40) is detachably connected to the case (10);

wherein, protection casing (40) joint in box (10).

10. The battery pack according to claim 1, further comprising a plurality of unit cells (70), the unit cells (70) being disposed in the case (10), a stacking direction of the plurality of unit cells (70) being perpendicular to a large surface of the unit cells (70).

11. The battery pack according to claim 10, further comprising a conductive strip (80), the conductive strip (80) electrically connecting at least two of the cells (70), the conductive strip (80) being located between the cells (70) and a side wall of the case (10).

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