CN217468647U - Battery box and battery package - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery box and battery package. This battery box includes: the frame is arranged around the battery unit in a surrounding manner; the supporting piece is positioned between the frame and the battery unit and is pressed against the battery unit; the height of the supporting piece is larger than that of the frame along a first direction, and the first direction is the height direction of the battery unit. Set up between frame and battery unit through support piece, support piece supports to press in battery unit, and support piece plays to frame structure additional strengthening, and support piece guarantees the support intensity to battery unit. Through setting up the support piece and highly being greater than the frame along the height of first direction, be equivalent to that support piece carries out elongated effect to the height of frame, for battery unit provides certain binding power, improves the holding power of battery box to battery unit to guarantee the fixed effect to battery unit.

Description

Battery box and battery package

Technical Field

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

Background

In the related art, when the battery pack is stacked in the battery box, if the height of the frame is too low, there is a case where the support force of the frame to the battery pack is insufficient, which affects the reliability of the entire battery device.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery box and battery package, support intensity is high.

According to the utility model discloses a first aspect provides a battery box, include:

the frame is arranged around the battery unit in a surrounding manner;

the supporting piece is positioned between the frame and the battery unit and is pressed against the battery unit;

the height of the support piece along a first direction is greater than that of the frame along the first direction, and the first direction is the height direction of the battery unit.

The utility model discloses battery box encloses around locating battery unit through setting up the frame, and the frame has played the effect of protecting the battery unit side, avoids battery unit to receive great impact. The supporting piece is located between the frame and the battery unit and is abutted against the battery unit, the supporting piece strengthens the frame structure, and meanwhile, the supporting strength of the battery unit is guaranteed by the supporting piece. If the frame is too little along the height of first direction, the frame just can not guarantee the binding force to battery unit, highly being greater than the frame through setting up support piece along the height of first direction, is equivalent to that support piece carries out elongated effect to the height of frame, for battery unit provides certain binding force, improves the holding power of battery box to battery unit to guarantee the fixed effect to battery unit.

According to a second aspect of the present invention, a battery pack is provided, which includes the above battery box.

The utility model discloses battery pack encloses around locating battery unit through battery pack's frame, and the frame has played the effect of protecting the battery unit side, avoids battery unit to receive great impact. The support piece through the battery package is located between frame and the battery unit, and support piece supports and presses in the battery unit, and support piece guarantees the support intensity to the battery unit when playing to frame structure additional strengthening. If the frame is too little along the height of first direction, the frame just can not guarantee the binding power to battery unit, highly being greater than the frame through setting up support piece along the height of first direction, is equivalent to that support piece carries out elongated effect to the height of frame, for battery unit provides certain binding power, improves the holding power of battery box to battery unit to guarantee the fixed effect to battery unit.

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 view showing a battery device according to a first exemplary embodiment;

fig. 2 is a schematic structural view showing a battery device according to a second exemplary embodiment;

fig. 3 is a first schematic view showing the structure of a battery case in a battery device according to a second exemplary embodiment;

fig. 4 is a second schematic structural view showing a battery case in a battery device according to a second exemplary embodiment;

fig. 5 is a third schematic structural view showing a battery case in a battery device according to a second exemplary embodiment;

fig. 6 is a fourth schematic structural view showing a battery case in a battery device according to the second exemplary embodiment.

The reference numerals are explained below:

100. a battery cell; 101. a battery; 102. an insulating plate;

1. a frame; 2. a support member;

11. a side plate; 12. a carrier plate;

21. a connecting portion; 22. a projection; 23. a support portion.

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 should 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.

An embodiment of the utility model provides a battery box, as shown in fig. 1-3, battery box includes frame 1 and support piece 2, and frame 1 encloses to be located around battery unit 100, and support piece 2 is located between frame 1 and battery unit 100, and support piece 2 supports and presses in battery unit 100. Wherein, the height of the support member 2 is greater than the height of the frame 1 along a first direction, which is the height direction of the battery unit 100.

The battery box provided by the embodiment is arranged around the battery unit 100 by arranging the frame 1, and the frame 1 plays a role in protecting the side surface of the battery unit 100, so that the battery unit 100 is prevented from being impacted greatly. Be located between frame 1 and battery unit 100 through support piece 2, support piece 2 locates the battery box promptly, and support piece 2 supports and presses in battery unit 100, and support piece 2 guarantees the support intensity to battery unit 100 when playing 1 structure reinforcing effect on frame. If the height of frame 1 is too little, frame 1 just can not guarantee the constraining force to battery unit 100, highly being greater than frame 1 along the height of first direction through setting up support piece 2 along the first direction, is equivalent to support piece 2 and carries out the effect of extension to the height of frame 1, provides certain constraining force for battery unit 100, improves the holding power of battery box to battery unit 100 to the assurance is to battery unit 100's fixed effect.

The battery unit 100 is similar to a rectangular parallelepiped structure, the height direction of the battery unit 100 is defined as a first direction, the length direction of the battery unit 100 is defined as a second direction, the width direction of the battery unit 100 is defined as a third direction, the first direction, the second direction and the third direction are mutually perpendicular to each other, and the first direction, the second direction and the third direction only represent spatial directions and have no substantial significance.

In one embodiment, the frame 1 includes a plurality of side plates 11, the side plates 11 are connected end to form an annular structure, and the side plates 11 surround the battery unit 100 to protect the side of the battery unit 100 and prevent the battery unit 100 from being impacted by the side. The frame 1 further comprises a bearing plate 12, the side plate 11 is arranged on the bearing plate 12, and the bearing plate 12 plays a role in supporting the side plate 11.

In one embodiment, as shown in FIG. 1, the support member 2 is a one-piece structure. By arranging the supporting piece 2 as an integrated structure, the part assembling links are saved, and the production cost is lower

In one embodiment, the support 2 is made of an extruded profile. The support piece 2 is made of an extruded section, the production process is simple, the operation is convenient, the advantage of light weight is achieved, and the requirement of light weight is met.

In one embodiment, the support member 2 is formed by bending a sheet metal part, so that the forming is convenient and the cost can be saved.

In one embodiment, the support member 2 is removably attached to the bezel 1. Because support piece 2 is the integrated into one piece structure, support piece 2's overall dimension is bigger, if support piece 2 and frame 1 adopt welded mode to have the problem of being difficult to fix, through setting up support piece 2 and can dismantle and connect in frame 1, the installation and the dismantlement of support piece 2 of being convenient for, maintenance cost is than lower. Specifically, frame 1 is provided with first connecting hole, and support piece 2 corresponds first connecting hole and is provided with the second connecting hole, and first connecting hole and second connecting hole are worn to establish by the connecting piece, realize the fixed between support piece 2 and the frame 1. Wherein the connecting piece can be a bolt, a connecting pin, a rivet and the like. Alternatively, the support 2 may be removably attached to the floor of the cabinet.

In one embodiment, as shown in fig. 2, the number of the supporting members 2 is multiple, the frame 1 includes a plurality of end-to-end side plates 11, and the supporting members 2 are disposed at intervals on the side plates 11 along the extending direction of the side plates 11. In this way, the supporting member 2 is a split structure, and the supporting members 2 are arranged on the same side plate 11 of the frame 1 at intervals, so that the restraint force on the battery unit 100 is ensured, and the original production materials of the supporting members 2 are saved.

In one embodiment, as shown in fig. 3-4, the supporting member 2 includes a connecting portion 21 and a protruding portion 22, the connecting portion 21 is connected to the frame 1, the protruding portion 22 is disposed on a side of the connecting portion 21 close to the battery unit 100, and the protruding portion 22 presses against the battery unit 100.

Connect in frame 1 through setting up connecting portion 21, connecting portion 21 plays the effect of intermediate junction, sets up in one side that connecting portion 21 is close to battery unit 100 through bulge 22, and bulge 22 plays the effect that support piece 2 structure is strengthened, guarantees support piece 2's structural strength. Meanwhile, since the protruding portion 22 is pressed against the battery unit 100, a certain distance is formed between the battery unit 100 and the side plate 11 of the frame 1, that is, the battery unit 100 is not directly contacted with the side plate 11 of the frame 1, so that a path for directly transferring heat between the battery unit 100 and the frame 1 is reduced, heat loss of the battery unit 100 is reduced, and thermal uniformity of the battery unit 100 is improved.

It should be noted that the number of the connecting portions 21 is two, and the two connecting portions 21 are respectively disposed on two sides of the protruding portion 22, so that the cross section of the supporting member 2 is a "zigzag" structure, or the supporting member 2 is specifically a pi-shaped member.

In one embodiment, the connection portion 21 is provided with a contact surface, which is connected to the bezel 1. If the contact surface of connecting portion 21 is not set up, then be line contact between bulge 22 and the frame 1, area of contact between bulge 22 and the frame 1 is smaller, be provided with the contact surface through connecting portion 21, the contact surface is connected in frame 1, then be surface contact between bulge 22 and the frame 1, area of contact between bulge 22 and the frame 1 is bigger, the joint strength between bulge 22 and the frame 1 has been increased, structural stability is improved.

Specifically, the contact surface and the frame 1 are connected by resistance welding.

Among them, resistance welding refers to a method of performing welding by generating heat through contact resistance using a strong current passing through a contact point between an electrode and a workpiece. The contact surface of the electrode and the connecting part 21 needs to be applied with certain pressure during welding, and the welding device is short in electrifying time, high in production efficiency and stable in welding quality, and is suitable for the mass production of metal sheets with the welding thickness smaller than 3 mm.

It should be noted that, the resistance welding may also be referred to as electric welding, and the connecting portion 21 of the support member 2 is equivalent to adding a turned-over edge to increase a welding area, so as to increase the welding area, and thus, spot welding may be adopted, which is similar to butt welding and has lower welding power and energy compared with the existing carbon dioxide arc welding, thereby reducing the thermal deformation of the support member 2 and improving the overall structural strength of the support member 2.

In addition, if the support member 2 is in direct contact with the frame 1, the battery unit 100, the support member 2 and the frame 1 are in sequential contact, and the three directly exchange heat, so that the heat dissipation speed is relatively high, but because only a local position of the battery unit 100 is in contact with the support member 2, the temperature of the part of the battery unit 100 in contact with the support member 2 is relatively low due to the relatively high heat dissipation speed, and the thermal consistency of the battery unit 100 is affected by the condition that the part of the battery unit 100 not in contact with the support member 2 is relatively low due to the relatively low heat dissipation speed and relatively high temperature. In the embodiment, the contact surface and the frame 1 are connected through resistance welding, heat of the battery unit 100 is transferred to the frame 1 through spot welding for heat dissipation, a heat dissipation path is slowed down, the heat dissipation speed of a part of the battery unit 100, which is in contact with the support member 2, is reduced, the situation that the temperature of the part of the battery unit 100, which is in contact with the support member 2, is lower is avoided, the thermal consistency of the whole battery unit 100 is further improved, and the temperature difference between the batteries 101 is reduced.

In one embodiment, as shown in fig. 5-6, the supporting member 2 further includes a supporting portion 23, the supporting portion 23 is connected to the connecting portion 21, and the supporting portion 23 is disposed on a top surface of the frame 1 along the first direction.

The supporting portion 23 is connected to the connecting portion 21, the supporting portion 23 is disposed on the frame 1, and the supporting portion 23 plays a role of intermediate connection, so that the connecting portion 21 and the frame 1 are fixed. If support member 2 is than higher along the high of first direction, support member 2 surpasss the part of frame 1 and though can retrain battery unit 100, but only support member 2's lower extreme position and frame 1 are connected, support member 2's upper end position appears the condition of bending easily, set up on frame 1 along the top surface of first direction through supporting part 23, support member 2 surpasss the part of frame 1 and is connected with frame 1 through supporting part 23 promptly, play the effect of strengthening support member 2 upper end position structure, avoid support member 2 the condition of bending to appear, thereby guarantee that support member 2 has good support intensity to battery unit 100.

In one embodiment, the height of the support 2 is H, the height of the battery cell 100 is H; wherein H is more than or equal to H/2 and less than or equal to H.

If the height of the support member 2 is too small, the constraint force on the battery unit 100 cannot be ensured, and by setting H/2 to be not more than H, the height of the support member 2 is at least greater than the height of the center of gravity of the battery unit 100, so that a certain constraint force is provided for the battery unit 100, and the fixing effect on the battery unit 100 is ensured; if the height of the supporting member 2 is too large, the strength of the supporting member 2 is large, a strong constraint force can be generated on the battery unit 100, when the battery unit 100 is operated circularly, a large acting force is generated between the expanded battery unit 100 and the supporting member 2, and the cycle performance of the battery unit 100 is affected, H is set to be less than or equal to H, the height of the supporting member 2 is at least smaller than that of the battery unit 100, namely the height of the supporting member 2 cannot be too high, so that the supporting member 2 can provide a buffer space for the expanded battery unit 100, the condition that the constraint force of the supporting member 2 on the battery unit 100 is too large in the cycle process of the battery unit 100 is avoided, the battery unit 100 can operate in a more comfortable posture, and the service performance of the battery unit 100 is ensured. Meanwhile, if the height of the supporting piece 2 is too high, no redundant fixing point exists between the supporting piece 2 and the frame 1, the supporting piece 2 is easy to bend, so that the strength of the supporting piece 2 is poor, and H/2 is set to be not less than H and not more than H, so that the fixing strength of the battery unit 100 can be ensured while the service performance and reliability of the battery unit 100 are ensured.

The embodiment provides a battery pack which comprises the battery box body.

As shown in fig. 1 to fig. 6, in the battery pack provided in this embodiment, the frame 1 of the battery pack is arranged around the battery unit 100, and the frame 1 plays a role in protecting the side of the battery unit 100, so as to prevent the battery unit 100 from being impacted greatly. The support member 2 through the battery pack is arranged on one side, close to the battery unit 100, of the frame 1, the support member 2 abuts against the battery unit 100, the support member 2 strengthens the structure of the frame 1, and meanwhile, the support member 2 guarantees the support strength of the battery unit 100. If the height of frame 1 along the first direction is too little, frame 1 just can not guarantee the constraining force to battery unit 100, highly being greater than frame 1 along the height of first direction through setting up support piece 2 along the first direction, is equivalent to support piece 2 and carries out the effect of extension to the height of frame 1, provides certain constraining force for battery unit 100, improves the holding power of battery box to battery unit 100 to guarantee the fixed effect to battery unit 100.

In one embodiment, the battery pack further comprises a battery unit 100, wherein the frame 1 of the battery box body is arranged around the battery unit 100, and the support 2 of the battery box body is pressed against the battery unit 100.

The frame 1 surrounds the battery unit 100, so that the frame 1 plays a role in protecting the side of the battery unit 100, and the battery unit 100 is prevented from being impacted greatly. The support member 2 is arranged on one side, close to the battery unit 100, of the frame 1, the support member 2 abuts against the battery unit 100, the support member 2 strengthens the structure of the frame 1, and meanwhile, the support member 2 guarantees the support strength of the battery unit 100.

It should be noted that the shape of the battery unit 100 is similar to a rectangular parallelepiped structure, and the height direction of the battery unit 100 is defined as a first direction, the width direction of the battery unit 100 is defined as a second direction, and the length direction of the battery unit 100 is defined as a third direction, where the first direction, the second direction, and the third direction are perpendicular to each other in pairs, and the first direction, the second direction, and the third direction only represent a spatial direction and have no substantial meaning.

In one embodiment, the battery cell 100 has two oppositely disposed first sides and four end-to-end second sides, the four second sides being disposed between the two first sides, the first sides having a surface area greater than the surface area of the second sides; wherein, the supporting member 2 is pressed against the first side of the battery unit 100.

Because the surface area of the first side surface is larger than that of the second side surface, the first side surface can also be called as a large surface, and because the temperature of two ends of the general battery unit 100 is lower, the temperature of the end part of the battery unit 100 is lower, the support member 2 is pressed against the first side surface of the battery unit 100, that is, the large surface of the battery unit 100 is pressed against the support member 2, so that the contact support area of the support member 2 and the battery unit 100 is larger, and the support member 2 is close to the frame 1, thereby further improving the thermal consistency of the battery pack.

It is understood that one battery unit 100 may also be referred to as an array of battery strings.

In one embodiment, the number of the battery units 100 is multiple, the battery units 100 are arranged along the third direction, and the supporting member 2 is pressed against the first side surfaces of the battery units 100. The first direction and the third direction are vertically arranged, and the first direction and the third direction are parallel to the first side face.

In this case, the support member 2 is equivalent to simultaneously support the large surfaces of the plurality of battery cells 100, and the plurality of battery cells 100 can be supported by one support member 2, so that the uniformity is good.

In one embodiment, the number of the supporting members 2 is multiple, and the supporting members 2 are pressed against the first sides of the battery units 100 in a one-to-one correspondence. By arranging the plurality of supporting members 2 to be pressed against the first side surfaces of the plurality of battery units 100 in a one-to-one correspondence manner, each battery unit 100 is pressed against one supporting member 2 in a one-to-one correspondence manner, so that the supporting effect of each battery unit 100 is ensured.

In one embodiment, the battery unit 100 includes a plurality of batteries 101 stacked in the second direction, and the support 2 is provided at an end of the battery unit 100 in the second direction; wherein the first direction and the second direction are arranged vertically. Wherein the first direction and the second direction are vertically arranged, and the second direction is perpendicular to the first side surface.

When the plurality of batteries 101 are stacked along the second direction, the batteries 101 need to be pressed to fix the plurality of batteries 101, and the support member 2 is arranged at the end of the battery unit 100 along the second direction, so that the support member 2 can well restrain the batteries 101 when the plurality of batteries 101 are pressed, and the pressing strength of the plurality of batteries 101 is ensured.

Among them, a battery includes a cell and an electrolyte, and 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 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.

In one embodiment, the cells 101 are stacked cells, which not only facilitate grouping, but also allow longer length cells 101 to be processed.

Specifically, electric core is lamination formula electric core, and electric core has first pole piece that stacks up each other, with first pole piece opposite electric property's second pole piece and the diaphragm of setting between first pole piece and second pole piece to make many to pile up and form lamination formula electric core to first pole piece and second pole piece.

Optionally, the battery 101 may be a winding battery, that is, a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a winding battery core.

In one embodiment, the battery unit 100 further includes an insulating plate 102, and the plurality of batteries 101 are stacked in the second direction to form a battery assembly, and the insulating plate 102 is disposed between the support member 2 and the battery assembly in the second direction.

Being equivalent to insulating board 102 set up in the tip of battery pack along the second direction, insulating board 102 has played the effect of protecting the battery pack tip, sets up between support piece 2 and battery pack through insulating board 102, and insulating board 102 plays isolated effect in the middle of battery pack and the support piece 2, avoids the risk of battery pack short circuit, guarantees battery pack's security.

Wherein, insulating board 102 can adopt the metal material to make, has insulating coating at insulating board 102's surface coating, and insulating coating plays and carries out isolated effect to baffle and battery pack, avoids the condition of short circuit, guarantees the security of battery 101 device.

If the insulating coating on the insulating plate 102 is easily scratched, it causes insulation failure. The insulating plate 102 may be made of an insulating resin material, such as Polycarbonate (PC), polyethylene terephthalate (PET), or may be made of mica or other materials. Wherein, mica has excellent high temperature insulating property, and when the battery 101 is in thermal runaway, the mica insulating plate 102 can still maintain normal insulating property, thereby reducing the risk of thermal runaway of the battery 101.

It should be noted that, when the number of the batteries 101 is plural, the plural batteries 101 may be arranged in the stacking direction of the batteries 101 to form a group of the batteries 101 and then in the battery box, and the plural batteries 101 may be fixed by the end plate and the side plate 11. At this time, a buffer pad may be disposed between the adjacent two batteries 101 for buffering and heat insulation between the adjacent two batteries 101, and may also be disposed between the end plate and the battery case for buffering and heat insulation between the set of batteries 101 and the battery case.

When a plurality of cells 101 are directly provided in the cell case, i.e., without grouping the plurality of cells 101, the end plate and the side plate 11 may be removed.

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 (17)

1. A battery case, comprising:

a frame (1) that surrounds the battery unit (100);

a support (2) located between the frame (1) and the battery unit (100), the support (2) being pressed against the battery unit (100);

wherein the height of the support member (2) is greater than the height of the frame (1) in a first direction, which is a height direction of the battery unit (100).

2. The battery box according to claim 1, characterized in that the support (2) is of one-piece construction.

3. The battery box according to claim 2, characterized in that the support (2) is made of extruded profile.

4. A battery box according to claim 3, characterised in that said support (2) is removably connected to said border (1).

5. The battery box body as claimed in claim 1, wherein the number of the supporting members (2) is plural, the frame (1) comprises a plurality of end-to-end side plates, and the plurality of supporting members (2) are arranged on the side plates at intervals along the extending direction of the side plates.

6. Battery box according to claim 5, characterised in that said support (2) comprises:

a connecting portion (21) connected to the frame (1);

and the protruding part (22) is arranged on one side, close to the battery unit (100), of the connecting part (21), and the protruding part (22) is pressed against the battery unit (100).

7. The battery box according to claim 6, wherein the support member (2) further comprises a support portion (23), the support portion (23) is connected to the connection portion (21), and the support portion (23) is provided on a top surface of the rim (1) in the first direction.

8. Battery box according to claim 6, characterised in that the connection (21) is provided with a contact surface, which is connected to the frame (1).

9. The battery case according to claim 8, wherein the contact surface and the frame (1) are connected by resistance welding.

10. The battery box according to any of claims 1 to 9, characterized in that, in the first direction, the height of the support (2) is H, the height of the battery cell (100) is H;

wherein H is more than or equal to H/2 and less than or equal to H.

11. A battery pack comprising the battery case according to any one of claims 1 to 10.

12. The battery pack according to claim 11, further comprising a battery unit (100), wherein the frame (1) of the battery case is disposed around the battery unit (100), and the support member (2) of the battery case is pressed against the battery unit (100).

13. The battery pack of claim 12, wherein the battery cell (100) has two oppositely disposed first sides and four end-to-end second sides, the four second sides being disposed between the two first sides, the first sides having a surface area greater than the surface area of the second sides;

wherein the support (2) is pressed against the first side of the battery unit (100).

14. The battery pack according to claim 13, wherein the number of the battery units (100) is plural, the plural battery units (100) are arranged along a third direction, and the support member (2) is pressed against the first side surfaces of the plural battery units (100);

the first direction and the third direction are vertically arranged, and the first direction and the third direction are parallel to the first side face.

15. The battery pack according to claim 14, wherein the number of the supporting members (2) is plural, and the plural supporting members (2) are pressed against the first sides of the plural battery cells (100) in a one-to-one correspondence.

16. The battery pack according to claim 13, wherein the battery unit (100) includes a plurality of batteries (101) stacked in a second direction, the support (2) being provided to an end of the battery unit (100) in the second direction;

wherein the first direction and the second direction are vertically arranged, and the second direction is perpendicular to the first side surface.

17. The battery pack according to claim 16, wherein the battery unit (100) further comprises an insulating plate (102), and a plurality of the batteries (101) are stacked in the second direction to form a battery assembly, and the insulating plate (102) is disposed between the support (2) and the battery assembly in the second direction.

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