CN217788672U - Battery and battery device - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery and battery device. The battery includes: the battery shell is provided with a bearing surface, the bearing surface is provided with a fixing part, and the fixing part is used for being fixed with the battery box body; the battery core is arranged in the battery shell; the lug is arranged in the battery shell and is electrically connected with the battery core; the fixing part is positioned between the projection of the battery core on the bearing surface, the projection of the pole lug on the bearing surface and the edge of the bearing surface. The fixing part is located between the projection of the battery cell on the bearing surface, the projection of the lug on the bearing surface and the edge of the bearing surface, so that the setting position of the fixing part on the bearing surface is staggered with the battery cell, the condition that the avoiding part is additionally arranged on the battery cell is avoided, the setting position of the fixing part on the bearing surface is staggered with the lug, the condition that the avoiding part is additionally arranged on the lug is avoided, the production process is simplified, and the production cost is low.

Description

Battery and battery device

Technical Field

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

Background

In the related art, the battery of the battery device is installed in the battery box through the connecting piece, in order to ensure the fixing effect between the battery and the battery box body, an avoiding part needs to be arranged on the battery core or the pole lug, and the avoiding part is used for avoiding the connecting piece, so that the process is complex, and the production cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery and battery device simplifies production technology, saves manufacturing cost.

According to a first aspect of the present invention, there is provided a battery, comprising:

the battery shell is provided with a bearing surface, the bearing surface is provided with a fixing part, and the fixing part is used for being fixed with the battery box body;

the battery core is arranged in the battery shell;

the lug is arranged in the battery shell and electrically connected to the battery cell;

the fixing part is located between the projection of the battery cell on the bearing surface, the projection of the tab on the bearing surface and the edge of the bearing surface.

The utility model discloses battery sets up in the battery case through electric core, and utmost point ear sets up in the battery case, and the battery case plays the effect that holds and protect to electric core and utmost point ear. The battery cell is electrically connected with the battery cell through the pole lugs so as to lead out the current of the battery cell from the pole lugs. The fixing part is arranged on the bearing surface of the battery shell and used for being fixed with the battery box body, the fixing part is used for fixing the battery shell and the battery box body, and the fixing effect of the battery shell in the battery box body is guaranteed. If the position of fixed part and electric core is just to setting up, perhaps the position of fixed part and utmost point ear is just to setting up, in order to guarantee the fixed effect between fixed part and the battery box, need be provided with on electric core or utmost point ear and dodge the portion, dodge the portion and be used for dodging the fixed part, lead to the technology complicacy, manufacturing cost is higher. The projection of the fixing part on the bearing surface is not overlapped with the projection of the battery cell on the bearing surface, namely the projection of the fixing part on the bearing surface is not overlapped with the projection of the battery cell on the bearing surface, so that the arrangement position of the fixing part on the bearing surface is staggered with the battery cell, and the condition that an avoiding part is additionally arranged on the battery cell is avoided; the projection of the fixing part on the bearing surface is not overlapped with the projection of the pole lug on the bearing surface, so that the arrangement position of the fixing part on the bearing surface is staggered with the pole lug, the condition that an avoiding part is additionally arranged on the pole lug is avoided, the link of arranging the avoiding part is saved, the production process is simplified, and the production cost is low.

According to a second aspect of the present invention, there is provided a battery device comprising the above battery.

The utility model discloses battery device, the electric core through the battery sets up in the battery case, and utmost point ear sets up in the battery case, and the battery case plays the effect that holds and protect to electric core and utmost point ear. The battery cell is electrically connected with the battery cell through the pole lugs so as to lead out the current of the battery cell from the pole lugs. The fixing part is arranged on the bearing surface of the battery shell and used for being fixed with the battery box body, the fixing part is used for fixing the battery shell and the battery box body, and the fixing effect of the battery shell in the battery box body is guaranteed. If the position of fixed part and electric core is just to setting up, perhaps the position of fixed part and utmost point ear is just to setting up, in order to guarantee the fixed effect between fixed part and the battery box, need be provided with on electric core or utmost point ear and dodge the portion, dodge the portion and be used for dodging the fixed part, lead to the technology complicacy, manufacturing cost is higher. The projection of the fixing part on the bearing surface is not overlapped with the projection of the battery cell on the bearing surface, namely the projection of the fixing part on the bearing surface is not overlapped with the projection of the battery cell on the bearing surface, so that the arrangement position of the fixing part on the bearing surface is staggered with the battery cell, and the condition that an avoiding part is additionally arranged on the battery cell is avoided; the projection of the fixing part on the bearing surface is not overlapped with the projection of the pole lug on the bearing surface, so that the arrangement position of the fixing part on the bearing surface is staggered with the pole lug, the condition that an avoiding part is additionally arranged on the pole lug is avoided, the link of arranging the avoiding part is saved, the production process is simplified, and the production cost is low.

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 according to a first exemplary embodiment;

fig. 2 is a schematic diagram showing the structure of a battery according to a second exemplary embodiment;

fig. 3 is a schematic structural view showing a battery device according to a second exemplary embodiment;

FIG. 4 is a first schematic diagram of a battery device according to a second exemplary embodiment showing a structure of a battery case with portions thereof hidden;

FIG. 5 is a second schematic diagram of a battery device according to a second exemplary embodiment, with portions of the battery housing hidden;

fig. 6 is a third schematic structural view of a battery device shown according to a second exemplary embodiment with a battery case hidden.

The reference numerals are explained below:

100. a battery case; 101. a base plate; 102. a support member; 200. an insulating fixing member;

1. a battery case; 2. an electric core; 3. a tab; 4. a pole column;

11. a bearing surface; 12. a side surface; 13. a fixed part; 14. avoiding the groove.

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, so it should 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.

An embodiment of the utility model provides a battery, please refer to fig. 1 to 3 and show, this battery includes battery case 1, electric core 2 and utmost point ear 3, and battery case 1 has loading end 11, and loading end 11 is provided with fixed part 13, and fixed part 13 is used for fixing mutually with battery box 100. The battery core 2 is arranged in the battery shell 1. Tab 3 is arranged in the battery shell 1, and the tab 3 is electrically connected to the battery cell 2. The fixing portion 13 is located between the projection of the battery core 2 on the bearing surface 11, the projection of the tab 3 on the bearing surface 11, and the edge of the bearing surface 11.

The battery that this embodiment provided sets up in battery case 1 through electric core 2, and utmost point ear 3 sets up in battery case 1, and battery case 1 plays the effect that holds and protect to electric core 2 and utmost point ear 3. The battery cell 2 is electrically connected through the tab 3, so that the current of the battery cell 2 is led out from the tab 3. The fixing part 13 is arranged on the bearing surface 11 of the battery shell 1, the fixing part 13 is used for fixing with the battery box 100, and the fixing part 13 is used for fixing the battery shell 1 and the battery box 100, so that the fixing effect of the battery shell 1 in the battery box 100 is ensured. If the positions of the fixed portion 13 and the battery cell 2 are opposite to each other, or the positions of the fixed portion 13 and the tab 3 are opposite to each other, in order to ensure the fixing effect between the fixed portion 13 and the battery box body 100, an avoiding portion needs to be arranged on the battery cell 2 or the tab 3, and the avoiding portion is used for avoiding the fixed portion 13, so that the process is complex, and the production cost is high. The projection of the battery cell 2 on the bearing surface 11, the projection of the tab 3 on the bearing surface 11 and the edge of the bearing surface 11 are positioned, that is, the projection of the fixing part 13 on the bearing surface 11 and the projection of the battery cell 2 on the bearing surface 11 are not overlapped, so that the arrangement position of the fixing part 13 on the bearing surface 11 is staggered with the battery cell 2, and the situation that an avoiding part is additionally arranged on the battery cell 2 is avoided; the projection of the fixing part 13 on the bearing surface 11 is not overlapped with the projection of the tab 3 on the bearing surface 11, so that the arrangement position of the fixing part 13 on the bearing surface 11 is staggered with the tab 3, the situation that an avoiding part is additionally arranged on the tab 3 is avoided, the link of arranging the avoiding part is saved, the production process is simplified, and the production cost is lower.

Wherein the battery further includes an electrolyte, which is a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell 2 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 batteries are laminated batteries, which are convenient to pack and can be processed to obtain batteries with longer length.

Specifically, electric core 2 is the lamination formula electricity core, and electric core 2 has first pole piece, the second pole piece opposite with first pole piece electric property and the diaphragm of setting between first pole piece and second pole piece that range upon range of each other to make many pairs of first pole piece and second pole piece pile up and form lamination formula electricity core.

Optionally, the battery 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 cell 2. It will be appreciated that in some embodiments, the tab is a pole piece, and the pole piece includes a first pole piece and a second pole piece.

In one embodiment, the battery is a square battery, the shape of the battery case 1 is similar to a rectangular parallelepiped structure, the battery case 1 has two opposite bearing surfaces 11 and four end-to-end side surfaces 12, and the four side surfaces 12 are disposed between the two opposite bearing surfaces 11. Wherein the surface area of the carrying surface 11 is larger than the surface area of the side surface 12.

By providing two oppositely disposed bearing surfaces 11 and four end-to-end side surfaces 12, the four side surfaces 12 are disposed between the two oppositely disposed bearing surfaces 11, and the two bearing surfaces 11 and the four side surfaces 12 form six surfaces of the battery case 1. By providing the surface area of the support surface 11 to be larger than the surface area of the side surface 12, the support surface 11 is also referred to as a large surface of the battery case 1. Since the bearing surface 11 is a large surface, the fixing portion 13 is disposed on the large surface of the battery case 1, and the large surface provides a large position range for the fixing portion 13, which facilitates the disposition of the fixing portion 13.

It can be understood that it is not essential to define the length direction of the battery case 1 as the first direction, the width direction of the battery case 1 as the second direction, the height direction of the battery case 1 as the third direction, the long side direction of the carrying surface 11 as the first direction, the short side direction of the carrying surface 11 as the second direction, both the first direction and the second direction are parallel to the carrying surface 11, the first direction, the second direction and the third direction are mutually perpendicular, and the first direction and the second direction only represent the spatial direction.

In one embodiment, as shown in fig. 1, the battery further includes a terminal post 4, the terminal post 4 being electrically connected to the tab 3. The pole 4 is disposed at the edge of the bearing surface 11, and the fixing portion 13 is disposed at one end of the bearing surface 11 close to the connection position of the pole 4 and the tab 3 along the first direction.

If the terminal 4 is disposed at the edge of the bearing surface 11, that is, the terminal 4 is disposed at the edge of the large surface, which is equivalent to the terminal 4 being disposed at a position close to the side edge of the bearing surface 11, it is convenient for the terminal 4 of other batteries or other electrical devices to be electrically connected.

Connect in utmost point ear 3 through utmost point post 4 electricity, make the electric current of electric core 2 pass through utmost point ear 3 drainage to utmost point post 4, utmost point post 4 sets up in the edge of loading surface 11 to draw the outside of battery case 1 with the battery. When utmost point post 4 and utmost point ear 3 are connected, along first direction, the space that utmost point ear 3, utmost point post 4 and the hookup location between utmost point post 4 and the utmost point ear 3 occupy is bigger, sets up in the one end that loading face 11 is close to utmost point post 4 and utmost point ear 3 hookup location through fixed part 13, is equivalent to fixed part 13 borrows the space of utmost point post 4 and utmost point ear 3, the fixed part 13 of being convenient for arranges.

In addition, if the fixing portion 13 is disposed at one end of the carrying surface 11, which is far away from the connection position of the terminal post 4 and the tab 3, the battery cell 2 needs to be moved toward the terminal post 4, so that a larger space exists between one end of the battery cell 2, which is far away from the fixing portion 13, and the battery housing 1, so as to allow the fixing portion 13 to be arranged, thereby increasing the overall height of the battery housing 1 while causing the waste of the space of the battery housing 1, and not using the space utilization rate. Set up in the one end that is close to utmost point post 4 and utmost point ear 3 hookup location in loading end 11 through fixed part 13, need not to have great space between the one end that fixed part 13 was kept away from to electric core 2 and battery case 1, avoid the waste in battery case 1 space, improve space utilization, and can not increase battery case 1's whole volume, avoid the too big condition of battery overall dimension.

In one embodiment, as shown in fig. 2, the battery further includes a terminal post 4, the terminal post 4 being electrically connected to the tab 3; the pole 4 is disposed on the side surface 12, and the fixing portion 13 is disposed at an edge corner of the bearing surface 11 near one end of the tab 3 along the first direction.

If the pole 4 is arranged on the side 12, i.e. the pole 4 is arranged on the narrow side of the battery housing 1. When the terminal 4 is connected with the tab 3, along the first direction, the tab 3 occupies a larger height in the battery case 1, and is disposed at one end of the bearing surface 11 close to the tab 3 through the fixing portion 13, which is equivalent to the fixing portion 13 borrows the height space of the tab 3, thereby facilitating the arrangement of the fixing portion 13. Because utmost point ear 3 sets up in the middle part at edge, the inner space of edge corner is bigger, sets up in edge corner through fixed part 13, is convenient for fixed part 13 to arrange.

In one embodiment, the number of the poles 4 is two, and the two poles 4 are arranged at two ends of the bearing surface 11 along the first direction; and/or, the number of the fixing portions 13 is multiple, and the fixing portions 13 are arranged at two ends of the bearing surface 11 along the first direction.

Wherein, two utmost point posts 4 specifically are positive post and negative pole post respectively, and two utmost point posts 4 set up respectively in the bearing surface 11 along the both ends of first direction, and the battery goes out the structure for utmost point post 4 both ends this moment, and two utmost point posts 4 are not set up in the homonymy of battery housing 1 promptly, but two utmost point posts 4 set up in the heteronymy of battery housing 1, make the distance between two utmost point posts 4 bigger relatively, the electric connection of the utmost point post 4 of being convenient for.

If the length of the carrying surface 11 along the extending direction is relatively large, only one fixing portion 13 may be unstable, and the fixing portions 13 are disposed at two ends of the carrying surface 11 along the first direction, so that the fixing portions 13 can be distributed at two ends of the carrying surface 11, thereby ensuring the fixing balance effect of the fixing portions 13 on the battery case 1. Meanwhile, as the two poles 4 are arranged at the two ends of the bearing surface 11 along the first direction, one part of the fixing parts 13 corresponds to the positive pole 4, and the other part corresponds to the negative pole 4, so that the two fixing parts 13 can use the space near the connection position of the poles 4 and the pole lugs 3, and the space utilization rate is high.

In one embodiment, as shown in fig. 3-5, the fixing portions 13 are diagonally disposed on the carrying surface 11.

When the two poles 4 are disposed at two ends of the carrying surface 11 along the first direction, the fixing portions 13 are disposed at opposite angles on the carrying surface 11, so that the fixing portions 13 are disposed at two ends of the carrying surface 11 along the first direction, and the fixing portions 13 are disposed at two ends of the carrying surface 11 along the second direction, so that the battery case 1 has a good fixing and balancing effect with the battery case 100 in both the first direction and the second direction.

In one embodiment, the fixing portion 13 is a through hole disposed on the carrying surface 11, and the insulating fixing member 200 is disposed through the through hole and the battery case 100 for fixing the battery to the battery case 100.

The fixing portion 13 is a through hole formed in the bearing surface 11, the through hole penetrates through the two opposite bearing surfaces 11 of the battery case 1, the insulating fixing member 200 may be a bolt, a pin, or the like made of an insulating material, and the insulating fixing member 200 penetrates through the through hole and the battery case 100, so that the battery and the battery case 100 are fixed.

It is understood that the fixing portion 13 may also be a through groove penetrating through the two opposite bearing surfaces 11, and the insulating fixing member 200 is inserted through the through groove to fix the battery case 100.

The embodiment also provides a battery device which comprises the battery.

The battery device provided by the embodiment is arranged in the battery shell 1 through the battery cell 2 of the battery, the tab 3 is arranged in the battery shell 1, and the battery shell 1 plays a role in accommodating and protecting the battery cell 2 and the tab 3. The battery cell 2 is electrically connected through the tab 3, so that the current of the battery cell 2 is led out from the tab 3. The fixing part 13 is arranged on the bearing surface 11 of the battery shell 1, the fixing part 13 is used for fixing with the battery box 100, and the fixing part 13 is used for fixing the battery shell 1 and the battery box 100, so that the fixing effect of the battery shell 1 in the battery box 100 is ensured. If the positions of the fixed portion 13 and the battery cell 2 are opposite to each other, or the positions of the fixed portion 13 and the tab 3 are opposite to each other, in order to ensure the fixing effect between the fixed portion 13 and the battery box body 100, an avoiding portion needs to be arranged on the battery cell 2 or the tab 3, and the avoiding portion is used for avoiding the fixed portion 13, so that the process is complex, and the production cost is high. The projection of the fixing part 13 on the bearing surface 11 is not overlapped with the projection of the battery cell 2 on the bearing surface 11, so that the setting position of the fixing part 13 on the bearing surface 11 is staggered with the battery cell 2, and the situation that an avoiding part is additionally arranged on the battery cell 2 is avoided; the projection of the fixing part 13 on the bearing surface 11 is not overlapped with the projection of the tab 3 on the bearing surface 11, so that the arrangement position of the fixing part 13 on the bearing surface 11 is staggered with the tab 3, the situation that an avoiding part is additionally arranged on the tab 3 is avoided, the link of arranging the avoiding part is saved, the production process is simplified, and the production cost is lower.

In one embodiment, as shown in fig. 3 to 5, the battery device further includes a battery case 100, the battery is disposed in the battery case 100, and the fixing portion 13 of the battery is fixed to the battery case 100.

Set up in battery box 100 through setting up the battery, battery box 100 plays the effect of holding the battery to protect the battery. The fixing between the battery and the battery case 100 is achieved by the fixing portion 13 to secure the fixing effect of the battery.

In one embodiment, the battery device further includes an insulating fixing member 200, and the fixing portion 13 is fixed to the battery case 100 by the insulating fixing member 200. The insulating fixing member 200 may be a bolt, a plug, or the like made of an insulating material, and the insulating fixing member 200 plays an intermediate connection role, so that the fixing portion 13 is fixed to the battery case 100 through the insulating fixing member 200, thereby fixing the battery to the battery case 100.

In one embodiment, the fixing portion 13 and the insulating fixing member 200 are connected by at least one of a screw connection, a snap connection, a plug connection, and an interference connection. When the fixing portion 13 is a through hole penetrating through the two opposite bearing surfaces 11, the through hole may be a circular hole or a threaded hole, so that the insulating fixing member 200 is a plastic bolt, and the insulating fixing member 200 is screwed to the fixing portion 13; the through hole can also be a hole with a size slightly smaller than that of the insulating fixing piece 200, so that the insulating fixing piece 200 is inserted into the fixing part 13, or the insulating fixing piece 200 and the fixing part 13 are in interference fit; a clamping portion matched with the insulating fixing member 200 may be further disposed in the through hole, so that the insulating fixing member 200 and the fixing portion 13 are clamped. The fixing manner between the fixing portion 13 and the insulating fixing member 200 is not limited in this embodiment, and can be adjusted according to actual production needs.

In one embodiment, as shown in fig. 3 to 5, the number of the cells is plural, and the plural cells are stacked in the third direction to form a battery assembly; wherein the third direction is perpendicular to the bearing surface 11 of the battery.

The battery pack is formed by stacking a plurality of batteries in the third direction, thereby improving the energy density of the entire battery device. The third direction is perpendicular to the bearing surfaces 11 of the cells, the bearing surfaces 11 of two adjacent cells are in contact with each other, and the contact area of the two adjacent cells is large due to the large surface area of the bearing surfaces 11, so that the stability of the cell assembly in the stacking process is ensured.

In one embodiment, the projections of the fixing portions 13 corresponding to the plurality of batteries on the carrying surface 11 are at least partially overlapped, and the fixing portions 13 of the plurality of batteries are connected through the insulating fixing member 200.

The projections of the fixing parts 13 corresponding to the plurality of batteries on the bearing surface 11 are at least partially overlapped, that is, the fixing parts 13 corresponding to the plurality of batteries are arranged oppositely, and the centers of the fixing parts 13 corresponding to the plurality of batteries are coaxially arranged, so that the insulating fixing member 200 can be conveniently penetrated. Specifically, the insulating fixture 200 may sequentially pass through the through-holes of the plurality of batteries to assemble the plurality of batteries into an integrated structure.

In one embodiment, the battery case 100 includes a base plate 101, a plurality of batteries are disposed on the base plate 101, and an insulating fixture 200 is coupled to the battery case 100; wherein the third direction is parallel to the base plate 101 (not shown in the figure).

Parallel through setting up third direction and bottom plate 101, set up and pile up in proper order about a plurality of batteries, connect in battery box 100 through setting up insulating mounting 200, after insulating mounting 200 is connected a plurality of batteries of completion and is in groups, insulating mounting 200 reconnection in battery box 100 to the realization is fixed in battery box 100 with a plurality of batteries simultaneously.

In one embodiment, the battery case 100 further includes an end insulating plate disposed at an end of the battery assembly, and the insulating fixture 200 is disposed through the end insulating plate for fixation between the battery assembly and the end insulating plate.

Set up in battery pack's tip through the end insulation board, the end plate plays the effect to 12 protections in battery pack tip side, and guarantees the insulating effect to battery pack. Wear to locate the end insulation board through insulating mounting 200, the end insulation board provides the mounted position for insulating mounting 200 to guarantee battery pack's fixed effect.

It should be noted that, in the second direction, two ends of the insulating fixing member 200 are respectively fixed to two end insulating plates disposed opposite to each other, so as to ensure the fixing effect between the two ends of the battery assembly in the second direction and the battery box 100.

In one embodiment, as shown in fig. 3 to 4, the battery case 100 includes a bottom plate 101 and a support member 102, the insulating fixing member 200 is connected to the bottom plate 101 through the support member 102, and the support member 102 is used for carrying a battery assembly; wherein the third direction is perpendicular to the base plate 101.

By setting the third direction perpendicular to the bottom plate 101, the plurality of batteries are arranged up and down and stacked in order. For a plurality of batteries arranged up and down, by arranging the supporting member 102, the supporting member 102 plays a role of bearing the plurality of batteries to ensure a supporting effect on the batteries. Meanwhile, the support member 102 serves as an intermediate member between the battery pack and the battery box 100, and the support member 102 serves as an intermediate connection to secure the plurality of batteries to the bottom plate 101.

It is understood that the supporting member 102 is a flat plate structure, and can be connected to the bottom plate 101 of the battery box 100; the supporting member 102 is similarly of an L-shaped structure, the supporting member 102 can be connected to a frame or a side plate of the battery case 100, and the connection position between the supporting member 102 and the battery case 100 is not limited and can be adjusted according to actual production needs.

In one embodiment, as shown in fig. 5-6, in the third direction, the bottom of the lowest cell in the battery assembly is provided with an avoidance groove 14, and the avoidance groove 14 is used for avoiding the support member 102.

Since the supporting member 102 is disposed at the bottom of the battery assembly in order to support the battery assembly, if the supporting member 102 protrudes from the battery assembly, the supporting member 102 occupies a height space of the battery device along the third direction, which increases the overall height of the battery device. The avoidance groove 14 is formed in the bottom of the battery at the lowest end of the battery assembly, the avoidance groove 14 is used for avoiding the support piece 102, the support piece 102 is embedded into the avoidance groove 14 at least partially, the situation that the support piece 102 protrudes out of the battery assembly part and is higher in height is avoided, the support piece 102 cannot occupy the height space of the battery device along the third direction, and the situation that the overall height of the battery device is higher is avoided.

It should be noted that, in the third direction, the lower end of the insulating fixing member 200 is connected to the supporting member 102, and the upper end of the insulating fixing member 200 is fixed to the top cover of the battery case 100, so as to secure the two ends of the battery assembly in the third direction.

In one embodiment, the battery device is a battery module including a plurality of batteries, and the battery module may further include end plates and side plates for fixing the plurality of batteries. A buffer pad may be disposed between adjacent cells, and a buffer pad may be disposed between the end plate and the cells.

In one embodiment, the battery device is a battery pack. The battery is disposed in the battery case 100. The battery case 100 protects the battery by providing the battery in the battery case 100.

When the number of the cells is plural, the plural cells may be arranged in the cell stacking direction to form a group of cells and then fixed in the cell case 100 by the end plates and the side plates. When a plurality of batteries are directly disposed in the battery case 100, i.e., without grouping the plurality of batteries, at this time, the end plates and the side plates 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 in 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 disclosure is limited only by the appended claims.

Claims (17)

1. A battery, comprising:

the battery box comprises a battery shell (1), wherein the battery shell (1) is provided with a bearing surface (11), the bearing surface (11) is provided with a fixing part (13), and the fixing part (13) is used for being fixed with a battery box body (100);

the battery core (2) is arranged in the battery shell (1);

the tab (3) is arranged in the battery shell (1), and the tab (3) is electrically connected to the battery core (2);

the fixing part (13) is located between the projection of the battery cell (2) on the bearing surface (11), the projection of the tab (3) on the bearing surface (11) and the edge of the bearing surface (11).

2. The battery according to claim 1, characterized in that the battery case (1) has four end-to-end side faces (12), the four side faces (12) being disposed between two oppositely disposed carrying faces (11);

wherein the area of the bearing surface (11) is larger than that of the side surface (12).

3. The battery according to claim 2, further comprising a terminal post (4), wherein the terminal post (4) is electrically connected to the tab (3);

the pole (4) is arranged at the edge of the bearing surface (11), and the fixing part (13) is arranged at one end, close to the connection position of the pole (4) and the pole lug (3), of the bearing surface (11) along a first direction;

wherein the first direction is parallel to the bearing surface (11).

4. The battery according to claim 2, further comprising a terminal post (4), wherein the terminal post (4) is electrically connected to the tab (3);

the pole (4) is arranged on the side surface (12), and the fixing part (13) is arranged at the edge corner of one end, close to the pole lug (3), of the bearing surface (11) along a first direction;

wherein the first direction is parallel to the bearing surface (11).

5. The battery according to claim 3 or 4, characterized in that the number of the poles (4) is two, and two poles (4) are arranged at two ends of the bearing surface (11) along the first direction; and/or the presence of a gas in the gas,

the number of the fixing parts (13) is multiple, and the fixing parts (13) are arranged at two ends of the bearing surface (11) along a first direction.

6. The battery according to claim 5, wherein the plurality of fixing portions (13) are diagonally disposed on the carrying surface (11).

7. The battery according to claim 1, wherein the fixing portion (13) is a through hole provided on the carrying surface (11), and an insulating fixing member (200) is inserted through the through hole and the battery case (100) for fixing between the battery and the battery case (100).

8. A battery device comprising the battery according to any one of claims 1 to 7.

9. The battery device according to claim 8, further comprising a battery case (100), wherein the battery is disposed in the battery case (100), and the fixing portion (13) of the battery is fixed to the battery case (100).

10. The battery device according to claim 9, further comprising an insulating fixing member (200), wherein the fixing portion (13) is fixed to the battery case (100) by the insulating fixing member (200).

11. The battery device according to claim 10, wherein the fixing portion (13) and the insulating fixing member (200) are connected by at least one of a screw connection, a snap connection, a plug connection, and an interference.

12. The battery device according to claim 10, wherein the number of the battery is plural, and a plurality of the battery is stacked in a third direction to form a battery assembly;

wherein the third direction is perpendicular to the load bearing surface (11) of the battery.

13. The battery device according to claim 12, wherein the projections of the fixing portions (13) corresponding to the plurality of batteries on the bearing surface (11) are at least partially overlapped, and the fixing portions (13) of the plurality of batteries are connected through the insulating fixing member (200).

14. The battery device according to claim 12 or 13, wherein the battery case (100) includes a bottom plate (101), a plurality of the batteries are provided to the bottom plate (101), and the insulating fixing member (200) is attached to the battery case (100);

wherein the third direction is parallel to the base plate (101).

15. The battery device according to claim 14, wherein the battery case (100) further comprises an end insulating plate provided at an end of the battery assembly, and the insulating fixture (200) is penetratingly provided at the end insulating plate for fixation between the battery assembly and the end insulating plate.

16. The battery device according to claim 12 or 13, wherein the battery case (100) comprises a bottom plate (101) and a support (102), the insulating fixture (200) is connected to the bottom plate (101) through the support (102), and the support (102) is used for carrying the battery assembly;

wherein the third direction is perpendicular to the base plate (101).

17. The battery device according to claim 16, characterized in that, in the third direction, the bottom of the battery at the lowest end of the battery assembly is provided with an avoidance groove (14), and the avoidance groove (14) is used for avoiding the support member (102).

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