CN219350503U - Battery pack and electric equipment - Google Patents

Abstract

The utility model discloses a battery pack and electric equipment, the battery pack comprises: the battery support is internally provided with a containing cavity, and the inner surface of the battery support is provided with a plurality of support clamping parts; the plurality of single batteries are arranged in the accommodating cavity, and the plurality of single batteries are provided with battery clamping parts, wherein the bracket clamping parts are correspondingly clamped with the battery clamping parts. Through mutual joint between battery support and a plurality of battery cells, can make between battery support and the battery form the interlocking spacing, can make a plurality of battery cells carry out the horizontal and vertical stack and arrange, can restrict the degree of freedom of battery cell better, can improve the overall stability of battery package.

Description

Battery pack and electric equipment

Technical Field

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

Background

In the related art, the battery module comprises a plurality of battery cells, an interlocking structure is formed between the battery cells for limiting, so that the overall stability of the battery module is higher, but the limiting effect between the battery module and a frame or a shell on the outer side is still poorer, and the problem of insufficient constraint on the degree of freedom of the battery cells can exist.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a battery pack that can form interlocking limit between batteries, limiting the degree of freedom of the unit batteries.

The utility model further provides electric equipment.

The battery pack according to the present utility model includes: the battery bracket is internally provided with a containing cavity, and the inner surface of the battery bracket is provided with a plurality of bracket clamping parts; the plurality of single batteries are arranged in the accommodating cavity, and the plurality of single batteries are provided with battery clamping parts, wherein the bracket clamping parts are correspondingly clamped with the battery clamping parts.

According to the battery pack, the battery support and the plurality of single batteries are clamped with each other, so that the battery support and the batteries form interlocking limit, the plurality of single batteries can be stacked horizontally and vertically, the degree of freedom of the single batteries can be better limited, and the overall stability of the battery pack can be improved.

In some examples of the utility model, the battery holder includes: the end plates and the cover plates are oppositely arranged in the first direction, the cover plates are connected between the end plates and located at two ends of the end plates in the second direction, at least one of the end plates and the cover plates is provided with a support clamping part, and the plurality of single batteries are distributed in the first direction at least and perpendicular to the second direction in the first direction.

In some examples of the present utility model, at least one set of the bracket clamping portions is provided on the end plate, and each set of the bracket clamping portions includes at least two bracket clamping portions that are spaced apart in the second direction; the battery clamping parts are arranged on two sides of a first direction of the single battery, each group of battery clamping parts comprises at least two battery clamping parts which are arranged at intervals in a second direction, two adjacent single batteries are matched with each other in a clamping mode through the battery clamping parts in the first direction, and one group of battery clamping parts of the single battery at the end portion are matched with one group of bracket clamping parts on the end plate in a clamping mode.

In some examples of the utility model, each set of the bracket latches includes: first support card protruding and first support draw-in groove that the interval set up in the second direction, every group battery joint portion includes: the first battery clamp is arranged in the second direction at intervals, the first bracket clamp is matched with the first battery clamp in a clamping way, and the first bracket clamp is matched with the first battery clamp in a clamping way.

In some examples of the present utility model, a plurality of sets of the bracket clamping portions are provided on the end plate, the plurality of sets of bracket clamping portions being disposed at intervals in the second direction; the plurality of single batteries are distributed in rows in the first direction and are arranged in rows in the second direction, and the plurality of groups of bracket clamping parts are matched with the battery clamping parts of the single batteries at the ends of the plurality of rows of single batteries in a clamping way.

In some examples of the present utility model, the cover plate is provided with a plurality of support clamping parts, the second direction end part of the single battery is provided with the battery clamping part, and the support clamping part on the cover plate is in clamping fit with the battery clamping part of the second direction end part of the single battery.

In some examples of the present utility model, in the second direction, the bracket clamping portion of the cover plate at one end is a second bracket clamping protrusion and the bracket clamping portion of the cover plate at the other end is a second bracket clamping groove, the battery clamping portion of one end of the single battery is a second battery clamping groove and the battery clamping portion of the other end is a second battery clamping protrusion, the second bracket clamping protrusion is in clamping fit with the second battery clamping groove, and the second bracket clamping groove is in clamping fit with the second battery clamping protrusion.

In some examples of the present utility model, the plurality of unit cells are distributed in a row in the first direction and arranged in a column in the second direction, and the battery clamping portions of two adjacent unit cells are in clamping fit in the second direction; the battery holder further includes: the baffle is connected between the end plates, and the baffle is blocked at the battery clamping parts of the adjacent two rows of single batteries.

In some examples of the utility model, the cell includes: the battery cell comprises a battery cell body, an insulating film, a positive insulating sheath and a negative insulating sheath, wherein the insulating film is arranged on the battery cell body, the positive insulating sheath and the negative insulating sheath are respectively arranged at the positive end part and the negative end part of the battery cell body, and the positive insulating sheath and the negative insulating sheath are respectively provided with a battery clamping part.

In some examples of the present utility model, the bracket locking portions are respectively provided at both ends of the end plate in the third direction, and the bracket locking portions at both ends are respectively locked and engaged with the battery locking portions on the positive electrode insulating sheath and the negative electrode insulating sheath.

In some examples of the present utility model, one end of the end plate in the second direction corresponds to two cover plates, the two cover plates are disposed at intervals in the third direction, the bracket clamping portion on one cover plate is in clamping fit with the battery clamping portion on the positive electrode insulating sheath, and the bracket clamping portion on the other cover plate is in clamping fit with the battery clamping portion on the negative electrode insulating sheath.

In some examples of the present utility model, at least one end of the end plate along the second direction is provided with an end plate clamping portion, and at least one end of the end plate along the first direction is provided with an end plate clamping portion, and the end plate clamping portion is in clamping fit with the end plate clamping portion.

In some examples of the utility model, the battery holder further comprises: the fastener, end plate joint portion is the end plate draw-in groove, the apron joint portion is the apron card protruding, the fastener wears to establish the end plate draw-in groove with the apron card is protruding to with both fixed connection.

In some examples of the present utility model, in the first direction, an air duct is formed between two adjacent unit cells, and a support block for supporting the unit cells is disposed in the air duct.

The electric equipment according to the utility model comprises: the battery pack described above.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a battery pack according to an embodiment of the present utility model;

fig. 2 is an exploded view of a battery pack according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of the up-and-down assembly of the unit cells;

fig. 4 is an exploded view of a unit cell;

fig. 5 is a schematic diagram of the left and right assembly of the unit cells;

FIG. 6 is a schematic structural view of a negative electrode insulating sheath;

fig. 7 is a schematic structural view of a positive electrode insulating sheath;

fig. 8 is a stack diagram of a three-layer battery.

Reference numerals:

1. a battery pack;

2. a battery holder; 21. a receiving chamber; 22. a bracket clamping part; 221. the first bracket is clamped and protruded; 222. a first bracket clamping groove; 223. the second bracket is clamped and protruded; 224. a second bracket clamping groove; 23. an end plate; 231. an end plate clamping part; 24. a cover plate; 241. a cover plate clamping part; 25. a baffle; 26. a fastener; 3. a single battery; 31. a battery clamping part; 311. the first battery card is convex; 312. a first battery clamping groove; 313. the second battery card is convex; 314. a second battery clamping groove; 32. a cell body; 33. an insulating film; 34. an anode insulating sheath; 35. a negative electrode insulating sheath; 36. an air duct; 37. and a supporting block.

Detailed Description

Embodiments of the present utility model will be described in detail below, with reference to the accompanying drawings, which are exemplary.

A battery pack 1 according to an embodiment of the present utility model, which battery pack 1 can be used as a power battery of electric equipment, will be described with reference to fig. 1 to 8.

As shown in fig. 1 and 2, a battery pack 1 according to an embodiment of the present utility model includes: the battery support 2 and a plurality of battery cells 3, the battery support 2 can play the effect of installation and support to the battery package 1, be formed with in the battery support 2 and hold the chamber 21, can provide installation space for a plurality of battery cells 3 like this, the internal surface of battery support 2 is provided with a plurality of support joint portions 22, a plurality of battery cells 3 are arranged in holding the intracavity 21, be provided with battery joint portion 31 on a plurality of battery cells 3, wherein, support joint portion 22 all corresponds the joint and has battery joint portion 31, can make battery support 2 and a plurality of battery cells 3 joint each other like this, thereby make battery support 2 and a plurality of battery cells 3 constitute battery package 1.

It can be understood that a plurality of battery cells 3 are arranged horizontally and vertically each other to set up in holding chamber 21 that forms in battery support 2, the joint is carried out at the position that battery cell 3 is connected with battery support 2, can carry out spacingly to battery cell 3 like this, can effectively retrain the degree of freedom of battery cell 3, can avoid appearing the problem that battery cell 3 shifted, thereby can make the fastening more that is connected between battery cell 3 and the battery support 2, can promote the overall stability of battery package 1.

From this, through mutual joint between battery support 2 and a plurality of battery cells 3, can make to form the interlocking spacing between battery support 2 battery cell 3, can make a plurality of battery cells 3 carry out the horizontal stack and arrange, can promote the overall stability of battery package 1.

As shown in fig. 1 and 2, the battery holder 2 includes: the end plates 23 and the cover plates 24 are oppositely arranged in the first direction, the cover plates 24 are connected between the end plates 23, the cover plates 24 are located at two ends of the end plates 23 in the second direction, at least one of the end plates 23 and the cover plates 24 is provided with a bracket clamping part 22, and the plurality of single batteries 3 are arranged at least in the first direction, and the first direction is perpendicular to the second direction. That is, the end plates 23 are located at the left and right sides of the battery pack 1, the cover plate 24 is connected with the end plates 23, the cover plate 24 is located at the upper and lower sides of the battery pack 1, and the bracket clamping parts 22 are provided on at least one of the end plates 23 and the cover plate 24, so that the unit batteries 3 at the corresponding positions can be clamped with the end plates 23 or the cover plate 24, thereby restraining the degree of freedom of the unit batteries 3 and ensuring the overall stability of the battery pack 1.

As shown in fig. 2, at least one set of bracket clamping parts 22 is provided on the end plate 23, and each set of bracket clamping parts 22 includes at least two bracket clamping parts 22 arranged at intervals in the second direction. At least two bracket engaging portions 22 are provided at an upper and lower interval of the end plate 23. By providing at least two holder engaging portions 22, the reliability of the engagement between the end plate 23 and the corresponding unit cell 3 can be improved.

Similarly, as shown in fig. 2 and 3, a group of battery clamping portions 31 are disposed on two sides of the single battery 3 in the first direction, each group of battery clamping portions 31 includes at least two battery clamping portions 31 disposed at intervals in the second direction, in the first direction, two adjacent single batteries 3 are in clamping fit through the battery clamping portions 31, and the group of battery clamping portions 31 of the single battery 3 located at the end is in clamping fit with the group of bracket clamping portions 22 on the end plate 23. That is, the battery clamping parts 31 are arranged on the left and right sides of the single battery 3, so that two adjacent single batteries 3 can be matched through the battery clamping parts 31 in a clamping manner, the two adjacent single batteries 3 can be interlocked, the single battery 3 positioned at the end part and the end plate 23 are matched in a clamping manner through the battery clamping parts 31 and the bracket clamping parts 22, the interlocking between the single battery 3 and the end plate 23 in a row can be completed, and the stability of the single battery 3 in the row can be ensured. And the stability of the single battery 3 can be further improved by the one-to-one clamping of the at least two battery clamping parts 31 and the at least two bracket clamping parts 22.

As shown in fig. 1 and 2, each set of bracket locking portions 22 includes: the first bracket locking protrusion 221 and the first bracket locking groove 222, which are disposed at intervals in the second direction, each group of battery locking parts 31 includes: the first battery clamping protrusions 311 and the first battery clamping grooves 312 are arranged at intervals in the second direction, the first bracket clamping protrusions 221 are matched with the first battery clamping grooves 312 in a clamping mode, and the first bracket clamping grooves 222 are matched with the first battery clamping protrusions 311 in a clamping mode. That is, the first bracket locking protrusion 221 and the first bracket locking groove 222 are disposed at an upper and lower direction of each group of the bracket locking portions 22 at an upper and lower direction, and the first battery locking protrusion 311 and the first battery locking groove 312 are disposed at an upper and lower direction of each group of the battery locking portions 31 at an upper and lower direction at an interval, so that the first bracket locking protrusion 221 and the first battery locking groove 312 can be locked and matched, and the first bracket locking groove 222 and the first battery locking protrusion 311 can be locked and matched, so that the bracket locking portions 22 and the battery locking portions 31 can be mutually connected, and the interlocking can be completely formed, and the stability of the single battery 3 can be further improved. And by adopting the bracket clamping part 22 and the battery clamping part 31 with different structures, the problem of the dislocation of the installation of the single battery 3 can be avoided.

In addition, as shown in fig. 2 and 3, a plurality of sets of bracket clamping parts 22 are provided on the end plate 23, the plurality of sets of bracket clamping parts 22 are arranged at intervals in the second direction, the plurality of single batteries 3 are distributed in rows in the first direction, the plurality of single batteries 3 are also arranged in columns in the second direction, and the plurality of sets of bracket clamping parts 22 are matched with the battery clamping parts 31 of the single batteries 3 at the end parts of the plurality of columns of single batteries 3 in a clamping manner. The multiple groups of bracket clamping parts 22 arranged on the end plate 23 can be mutually clamped and connected with the battery clamping parts 31 at the end parts of the multiple rows of single batteries 3, so that the freedom degree of the single batteries 3 can be effectively limited in the up-down direction, the single batteries 3 can be favorably arranged in rows in the accommodating cavity 21, and the overall stability of the battery pack 1 can be further improved. And the mode of up-down clamping is adopted, so that the single battery 3 is fixed simply and efficiently.

As shown in fig. 2 and 3, the cover plate 24 is provided with a plurality of holder engaging portions 22, and the second direction end portion of the unit battery 3 is provided with a battery engaging portion 31, and the holder engaging portion 22 on the cover plate 24 is engaged with the battery engaging portion 31 of the second direction end portion of the unit battery 3. That is, the battery clamping portions 31 are also provided at the upper and lower ends of the unit batteries 3, so that the cover plate 24 can be clamped with one end of the plurality of unit batteries 3, the degree of freedom of the unit batteries 3 can be restrained in the up-down direction, and the stability of the unit batteries 3 in the battery holder 2 can be further improved.

Specifically, as shown in fig. 2 and 3, in the second direction, the bracket locking portion 22 of the one end cover plate 24 is a second bracket locking protrusion 223, the bracket locking portion 22 of the other end cover plate 24 is a second bracket locking groove 224, the battery locking portion 31 of one end of the unit battery 3 is a second battery locking groove 314, the battery locking portion 31 of the other end of the unit battery 3 is a second battery locking protrusion 313, the second bracket locking protrusion 223 is locked and engaged with the second battery locking groove 314, and the second bracket locking groove 224 is locked and engaged with the second battery locking protrusion 313. That is, at the upper and lower ends of the cover plate 24, one end is a second bracket clamping protrusion 223, the other end is a second bracket clamping groove 224, and at the upper and lower ends of the single battery 3, one end is a second battery clamping groove 314, and the other end is a second battery clamping protrusion 313, so that the second bracket clamping protrusion 223 and the second battery clamping groove 314 can be in clamping fit, and the second bracket clamping groove 224 and the second battery clamping protrusion 313 can be in clamping fit, that is, the cover plate 24 can be in clamping fit with a plurality of single batteries 3, so that the cover plate 24 and the single batteries 3 are connected into a whole. By this arrangement, the problem of the dislocation of the mounting of the single battery 3 can be avoided.

As shown in fig. 1, 2, and 8, the plurality of unit cells 3 are arranged in a row in the first direction and in a column in the second direction, and the battery locking portions 31 of two adjacent unit cells 3 are locked and engaged in the second direction. That is, the plurality of unit cells 3 may be engaged with each other not only in a left-right row but also in a top-bottom row, so that the plurality of unit cells 3 may be engaged with each other to form a single cube. In this way, the single battery 3 can be clamped and interlocked in the left-right direction and the up-down direction, the degree of freedom can be further restrained, and the stability of the single battery 3 can be improved.

As shown in fig. 1 and 2, the battery holder 2 may further include: the baffle plates 25, the baffle plates 25 are connected between the end plates 23, and the baffle plates 25 are arranged at the battery clamping parts 31 of the single batteries 3 in two adjacent rows. The length of the baffle 25 is close to or the same as that of the cover plate 24, a baffle 25 is arranged between every two rows of single batteries 3, the baffle 25 can limit the single batteries 3 and also can limit the movement of the single batteries 3, and the surface of the baffle 25 is wrapped with an insulating film, so that the electric leakage danger between the single batteries 3 can be avoided.

For example, as shown in fig. 1, the battery clamping parts 31 of the leftmost and rightmost battery cells 3 of the bottommost row, which are close to the side of the end plate 23, are respectively matched with the corresponding bracket clamping parts 22 on the end plate 23, and the battery clamping parts 31 of the lower side are matched with the bracket clamping parts 22 on the cover plate 24, so that the operation modes can be all slid in front and back, and the installation of the battery cells 3 is simple and convenient.

The battery clamping parts 31 on the side of the single battery 3 on the left side and the right side of the lowest row are matched with the battery clamping parts 31 on the side of the single battery 3 on the left side and the right side adjacent to each other, the battery clamping parts 31 on the lower side are matched with the bracket clamping parts 22 on the cover plate 24, the operation modes can be all sliding in front and back, and the like, so that the arrangement of the single battery 3 on the lowest row can be completed, and the single battery 3 is interlocked in the four directions of up, down, left and right; the next-lower row of unit cells 3 may be distinguished in that the up-down interlocking of the unit cells 3 is the fit between the battery cell 3 clamping portions 31 in the up-down direction according to the mounting manner of the lowermost row of unit cells 3. After the two rows of single batteries 3 are assembled, the baffle 25 can be installed to limit the front and back of the two rows of single batteries 3, and then each layer of single batteries 3 is stacked, the baffle 25 is installed to limit the single batteries 3, so that the freedom degrees of the single batteries 3 in six directions can be limited.

In particular, as shown in fig. 3 to 7, the unit cell 3 includes: the battery cell comprises a battery cell body 32, an insulating film 33, a positive insulating sheath 34 and a negative insulating sheath 35, wherein the insulating film 33 is arranged on the battery cell body 32, the positive insulating sheath 34 and the negative insulating sheath 35 are respectively arranged at the positive end part and the negative end part of the battery cell body 32, and battery clamping parts 31 are respectively arranged on the positive insulating sheath 34 and the negative insulating sheath 35. That is, the positive insulating sheath 34 is located at the front end of the battery cell body 32, the front end of the battery cell body 32 is positive, the negative insulating sheath 35 is located at the rear end of the battery cell body 32, the rear end of the battery cell body 32 is negative, the battery clamping parts 31 are arranged on the positive insulating sheath 34 and the negative insulating sheath 35, so that the single battery 3 and the battery bracket 2 can be conveniently clamped and matched, the positive insulating sheath 34 and the negative insulating sheath 35 can also be used for bearing the weight of the single battery 3, so that the single battery 3 can not be directly stressed when stacked, and the positive insulating sheath 34 and the negative insulating sheath 35 can protect the single battery 3. For example, the insulating film 33 is wrapped around the upper, lower, left and right surfaces of the cell body 32, and the materials of the positive insulating sheath 34 and the negative insulating sheath 35 include any one or a combination of a plurality of PA, PPO, POM, PC, PBT, PET, so that the insulating effect can be ensured.

As shown in fig. 2, the end plate 23 is provided with bracket engaging portions 22 at both ends in the third direction, and the bracket engaging portions 22 at both ends are engaged with the battery engaging portions 31 on the positive electrode insulating sheath 34 and the negative electrode insulating sheath 35, respectively. The end plate 23 is provided with the bracket clamping portion 22 in the front-rear direction, so that the positive electrode insulating sheath 34 and the negative electrode insulating sheath 35 of the single battery 3 can be matched with the end plate 23 in a clamping manner, and the overall stability of the battery pack 1 is improved. The third direction is the front-rear direction shown in fig. 1.

Specifically, as shown in fig. 2, one end of the end plate 23 in the second direction corresponds to two cover plates 24, the two cover plates 24 are arranged at intervals in the third direction, the bracket clamping portion 22 on one cover plate 24 is in clamping fit with the battery clamping portion 31 on the positive electrode insulating sheath 34, and the bracket clamping portion 22 on the other cover plate 24 is in clamping fit with the battery clamping portion 31 on the negative electrode insulating sheath 35. That is, the cover plates 24 may be four, two cover plates 24 are located in the upper and lower directions of the end plate 23, and the two cover plates 24 are disposed at intervals in the front-rear direction, so that the cover plates 24 located on the front side and the positive electrode insulating sheath 34 of the unit cell 3 can be engaged with each other, and the cover plates 24 located on the rear side and the negative electrode insulating sheath 35 of the unit cell 3 are engaged with each other, so that the unit cell 3, the end plate 23 and the cover plates 24 are engaged with each other to form the cell pack 1. The battery support 2 arranged in this way has a simple structure, fewer parts and maximum functionalization of each part.

Of course, as shown in fig. 2, at least one end of the end plate 23 along the second direction is provided with an end plate clamping portion 231, at least one end of the cover plate 24 along the first direction is provided with a cover plate clamping portion 241, and the end plate clamping portion 231 is in clamping fit with the cover plate clamping portion 241. The end plate 23 is provided with an end plate clamping part 231 in the up-down direction, the end plate clamping part 231 can be a groove, the cover plate 24 is provided with a cover plate clamping part 241 in the left-right direction, the cover plate clamping part 241 can be a clamping protrusion, the end plate clamping part 231 and the cover plate clamping part 241 can be conveniently matched in a clamping manner, and during installation, the clamping protrusions on the two cover plates 24 can slide in along the groove on the end plate 23, so that the end plate 23 and the cover plate 24 are connected. The end plate clamping part 231 and the cover plate clamping part 241 arranged in this way can clamp the end plate 23 and the cover plate 24 together, can improve the structural reliability of the battery bracket 2, and are simple and convenient to install in this way.

In addition, as shown in fig. 1, the battery holder 2 further includes: the fastening piece 26, the end plate clamping portion 231 is an end plate clamping groove, the cover plate clamping portion 241 is a cover plate clamping protrusion, and the fastening piece 26 penetrates through the end plate clamping groove and the cover plate clamping protrusion to fixedly connect the end plate clamping groove and the cover plate clamping protrusion. After the end plate 23 and the cover plate 24 are connected with each other, the end plate clamping groove and the cover plate clamping projection are penetrated through the fastener 26, so that the end plate 23 and the cover plate 24 are connected more tightly, and the overall structural strength of the battery pack 1 is improved.

As shown in fig. 1, an air duct 36 is formed between two adjacent single batteries 3 in the first direction, and a support block 37 for supporting the single batteries 3 is disposed in the air duct 36. The supporting blocks 37 can separate the accommodating cavities 21, so that an air channel 36 is formed between two single cells in the left-right direction, the battery pack 1 is not required to be provided with an additional air channel 36, specifically, a plurality of supporting blocks 37 are adhered to one large surface of the single cells 3, the thickness of the supporting blocks 37 is equal to the distance between the two single cells 3, the distance between the supporting blocks 37 positioned in the middle of the single cells 3 is relatively close, the distance between rubber blocks close to two ends of the single cells 3 is gradually increased, the expansion force of the battery is mainly concentrated in the middle part of two adjacent single cells 3, the supporting blocks 37 between the single cells 3 are relatively dense, the expansion force of the single cells 3 can be buffered well, and meanwhile, the supporting blocks 37 divide the gap between the single cells 3 into a plurality of air channels 36, namely the air channel 36 capable of forming up-down air inlet and outlet. The support block 37 may be a rubber block.

The assembly process of the battery pack is described in detail below.

In a first step, the end plate 23 is mated with the lower cover plate 24. The two lower cover plates 24 and the two end plates 23 are respectively slid into and clamped with each other through the end plate clamping parts 231 and the cover plate clamping parts 241, so that limiting can be performed in the left-right direction, and then the end plates 23 are fixedly connected with the lower cover plates 24 through the fasteners 26.

In the second step, the unit cells 3 are fitted to the support blocks 37. The supporting blocks 37 are stuck on one large surface of the single battery 3 in the left-right direction, the thickness of the supporting blocks 37 is guaranteed to be equal to the distance between the single battery 3, the distance between the supporting blocks 37 in the middle of the single battery 3 is relatively close, the distance between the supporting blocks 37 close to the two ends of the single battery 3 is gradually increased, so that the buffer effect of the supporting blocks 37 on the expansion force of the single battery 3 can be improved, and the supporting blocks 37 can also divide the gap between the single batteries 3, so that an air duct 36 for air outlet up and down is formed.

And thirdly, arranging the single batteries 3. The leftmost and rightmost battery cells 3 of the bottommost row are matched with the bracket clamping parts 22, the battery clamping parts 31 of the next left and right battery cells 3 are matched with the battery clamping parts 31 of the adjacent leftmost and rightmost battery cells 3, the battery clamping parts 31 of the lower side are matched with the bracket clamping parts 22 on the cover plate 24, the operation modes can be all sliding in from front to back, and the like, so that the arrangement of the bottommost battery cells 3 can be completed, and the battery cells 3 form interlocking in the up-down, left-right directions; the next-lower row of unit cells 3 may be distinguished in that the up-down interlocking of the unit cells 3 is the fit between the battery cell 3 clamping portions 31 in the up-down direction according to the mounting manner of the lowermost row of unit cells 3.

After the two rows of single batteries 3 are assembled, the baffle 25 can be installed to limit the front and back of the two rows of single batteries 3, and then the baffle 25 is installed to limit the single batteries 3 every time one row of single batteries 3 are stacked, so that the freedom degrees of the single batteries 3 in six directions can be limited.

In a final step, the end plate 23 is mated with the upper cover plate 24. The number of the unit cells 3 transversely arranged and the number of the vertically stacked columns are determined by the required electric quantity and the material strength of the positive and negative insulating jackets, after the last row of unit cells 3 are stacked, the upper cover plates 24 are installed, the cover plate clamping parts 241 of the two upper cover plates 24 are matched with the end plate clamping parts 231 of the end plates 23 in a clamping manner, and finally the end plates 23 are fixedly connected with the cover plates 24 through the fasteners 26.

According to an embodiment of the utility model, a powered device includes: the battery pack 1 described in the above embodiment.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features. In the description of the present utility model, "plurality" means two or more. In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween. In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (15)

1. A battery pack, comprising:

a battery bracket (2), wherein a containing cavity (21) is formed in the battery bracket (2), and a plurality of bracket clamping parts (22) are arranged on the inner surface of the battery bracket (2);

the battery pack comprises a plurality of single batteries (3), wherein the single batteries (3) are arranged in a containing cavity (21), battery clamping portions (31) are arranged on the single batteries (3), and the bracket clamping portions (22) are correspondingly clamped with the battery clamping portions (31).

2. The battery pack according to claim 1, wherein the battery holder (2) includes: end plate (23) and apron (24), end plate (23) set up relatively in the first direction, apron (24) connect in between end plate (23) and be located end plate (23) second direction both ends, end plate (23) with at least one of apron (24) is provided with support joint portion (22), a plurality of battery cells (3) are at least in first direction is arranged, first direction with the second direction is perpendicular.

3. The battery pack according to claim 2, wherein the end plate (23) is provided with at least one set of the bracket clamping portions (22), each set of the bracket clamping portions (22) including at least two bracket clamping portions (22) arranged at intervals in the second direction;

the battery clamping parts (31) are arranged on two sides of a first direction of the single battery (3), each battery clamping part (31) comprises at least two battery clamping parts (31) which are arranged at intervals in a second direction, two adjacent single batteries (3) are matched with each other in a clamping mode through the battery clamping parts (31), and one group of the battery clamping parts (31) of the single battery (3) at the end portion are matched with one group of the bracket clamping parts (22) on the end plate (23) in a clamping mode.

4. A battery pack according to claim 3, wherein each set of the bracket clamping portions (22) includes: first bracket clamping protrusions (221) and first bracket clamping grooves (222) which are arranged at intervals in the second direction, wherein each group of battery clamping parts (31) comprises: the first battery clamping protrusions (311) and the first battery clamping grooves (312) are arranged at intervals in the second direction, the first support clamping protrusions (221) are matched with the first battery clamping grooves (312) in a clamping mode, and the first support clamping grooves (222) are matched with the first battery clamping protrusions (311) in a clamping mode.

5. The battery pack according to claim 2, wherein a plurality of sets of the bracket locking portions (22) are provided on the end plate (23), the plurality of sets of the bracket locking portions (22) being arranged at intervals in the second direction;

the plurality of single batteries (3) are distributed in rows in the first direction and are arranged in rows in the second direction, and the plurality of groups of bracket clamping parts (22) are matched with the battery clamping parts (31) of the single batteries (3) at the ends of the plurality of groups of single batteries (3) in a clamping mode.

6. The battery pack according to claim 2, wherein a plurality of the bracket clamping portions (22) are provided on the cover plate (24), the battery clamping portions (31) are provided at the second direction end portions of the unit batteries (3), and the bracket clamping portions (22) on the cover plate (24) are in clamping fit with the battery clamping portions (31) at the second direction end portions of the unit batteries (3).

7. The battery pack according to claim 6, wherein in the second direction, the bracket locking portion (22) of the cover plate (24) at one end is a second bracket locking protrusion (223) and the bracket locking portion (22) of the cover plate (24) at the other end is a second bracket locking groove (224), the battery locking portion (31) of one end of the unit battery (3) is a second battery locking groove (314) and the battery locking portion (31) of the other end is a second battery locking protrusion (313), the second bracket locking protrusion (223) is locked and engaged with the second battery locking groove (314), and the second bracket locking groove (224) is locked and engaged with the second battery locking protrusion (313).

8. The battery pack according to claim 6, wherein the plurality of unit cells (3) are arranged in a row in the first direction and in a column in the second direction, and the battery clamping portions (31) of two adjacent unit cells (3) are clamped and fitted in the second direction;

the battery holder (2) further comprises: the baffle (25), baffle (25) connect in between end plate (23), baffle (25) keep off locate adjacent two rows battery clamping portion (31) department of battery cell (3).

9. The battery pack according to claim 2, wherein the unit cells (3) include: electric core body (32), insulating film (33), anodal insulating sheath (34) and negative pole insulating sheath (35), insulating film (33) set up in on electric core body (32), anodal insulating sheath (34) with negative pole insulating sheath (35) set up respectively in anodal tip and negative pole tip of electric core body (32), anodal insulating sheath (34) with all be provided with on negative pole insulating sheath (35) battery joint portion (31).

10. The battery pack according to claim 9, wherein the bracket locking portions (22) are provided at both ends of the end plate (23) in the third direction, respectively, and the bracket locking portions (22) at both ends are respectively locked and engaged with the battery locking portions (31) on the positive electrode insulating sheath (34) and the negative electrode insulating sheath (35), respectively.

11. The battery pack according to claim 10, wherein two cover plates (24) are corresponding to one end of the end plate (23) in the second direction, the two cover plates (24) are arranged at intervals in the third direction, the bracket clamping part (22) on one cover plate (24) is clamped and matched with the battery clamping part (31) on the positive electrode insulating sheath (34), and the bracket clamping part (22) on the other cover plate (24) is clamped and matched with the battery clamping part (31) on the negative electrode insulating sheath (35).

12. The battery pack according to claim 2, wherein the end plate (23) is provided with an end plate clamping portion (231) at least at one end in the second direction, the cover plate (24) is provided with a cover plate clamping portion (241) at least at one end in the first direction, and the end plate clamping portion (231) is in clamping fit with the cover plate clamping portion (241).

13. The battery pack according to claim 12, wherein the battery holder (2) further comprises: the end plate clamping portion (231) is an end plate (23) clamping groove, the cover plate clamping portion (241) is a cover plate (24) clamping protrusion, and the fastener (26) penetrates through the end plate (23) clamping groove and the cover plate (24) clamping protrusion to fixedly connect the end plate and the cover plate.

14. Battery pack according to claim 2, characterized in that between two adjacent single cells (3) in the first direction an air channel (36) is formed, in which a support block (37) supporting the single cells (3) is arranged.

15. A powered device, comprising: the battery pack of any one of claims 1-14.

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