CN216958287U

CN216958287U - Battery pack and casing thereof

Info

Publication number: CN216958287U
Application number: CN202123448410.7U
Authority: CN
Inventors: 陈熙; 邓磊
Original assignee: Ecoflow Technology Ltd
Current assignee: Ecoflow Technology Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-12
Anticipated expiration: 2031-12-31

Abstract

The application relates to the field of energy storage equipment, and provides a battery pack and a shell thereof. The battery pack shell is provided with a first side surface and a second side surface which are oppositely arranged; the first side surface is provided with two first grooves at intervals along a first direction and N second grooves between the two first grooves; the second side surface is provided with a third groove and N second grooves at intervals along the first direction; the N is a natural number, the first groove is used for assembling a single-row connecting sheet, the second groove is used for assembling a double-row connecting sheet, and the third groove is used for selectively assembling the single-row connecting sheet or the double-row connecting sheet. The battery pack shell can be suitable for assembling two battery packs with different capacities and forming two battery packs with different capacities on the basis of manufacturing a novel connecting sheet without repeated and repeated die sinking, so that the battery pack shell has better applicability and usability, can better meet the assembly requirements of the battery packs with different capacities and has lower production cost.

Description

Battery pack and casing thereof

Technical Field

The application belongs to the technical field of energy storage equipment, especially relates to a battery package and casing thereof.

Background

The battery pack of the energy storage power supply generally comprises a battery pack shell, battery cells assembled in the battery pack shell, and connecting sheets assembled outside the battery pack shell, wherein the battery cells can be connected in series, in parallel or in series and in parallel through the connecting sheets to form a battery pack. The battery pack case is generally only suitable for assembling a battery pack with a single capacity, and is poor in applicability.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a battery pack shell to solve the battery pack shell of current battery pack and can only adapt to the group battery of the single capacity of equipment, the relatively poor technical problem of suitability.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a battery pack shell is provided with a first side surface and a second side surface which are oppositely arranged;

the first side surface is provided with two first grooves at intervals along a first direction and N second grooves between the two first grooves;

the second side surface is provided with a third groove and N second grooves at intervals along the first direction;

the N is a natural number, the first groove is used for assembling single-row connecting pieces, the second groove is used for assembling double-row connecting pieces, and the third groove is used for selectively assembling single-row connecting pieces or double-row connecting pieces.

Through adopting above-mentioned scheme, the single connection piece that a battery core was listed as can be connected in the assembly of the first recess adaptation of battery can casing accessible, the double-row connection piece that two adjacent battery cores were listed as can be connected through the assembly of second recess adaptation, optionally adapt to assembly single connection piece or double-row connection piece through third recess, and realize need not repeatedly, on the basis of the novel connection piece of mould sinking preparation again, the group battery of two kinds of different capacities of adaptation equipment, the battery package of two kinds of different capacities of adaptation shaping, thereby can have the suitability of preferred, the usability, can satisfy the equipment demand of different capacity battery packages better, and manufacturing cost is lower.

In one embodiment, one end of the first groove in the second direction is provided with a first notch communicating the first groove to the outside;

one end of the second groove in the second direction is provided with a second notch communicating the second groove to the outside;

one end of the third groove in the second direction is provided with a third notch communicating the third groove to the outside;

the first notch is used for assembling a single-row output end of a single-row connecting sheet, the second notch is used for assembling a double-row output end of a double-row connecting sheet, and the third notch is used for assembling the single-row output end of the single-row connecting sheet or the double-row output end of the double-row connecting sheet.

By adopting the scheme, when the single-row connecting piece is in limited assembly, the first groove and the third groove can be used for limiting and assembling the single-row output end of the single-row connecting piece through the corresponding first notch and the corresponding third notch and guiding the single-row output end to extend out to one side of the first side surface in the second direction; similarly, the second groove and the third groove can limit and assemble the double-row output ends of the double-row connecting sheets through the corresponding second notch and the third notch when the double-row connecting sheets are limit assembled in the second groove, and guide the double-row output ends to extend out to the same side of the first side surface in the second direction; therefore, the power connection relationship between the single-row output ends and the double-row output ends can be stably and reliably established on the same side of the first side surface in the second direction, and the power connection relationship between the single-row connecting pieces and the double-row connecting pieces can be stably and reliably established.

In one embodiment, the battery pack shell further comprises a third side surface, wherein a first supporting plate arranged opposite to the first notch, a second supporting plate arranged opposite to the second notch and a third supporting plate arranged opposite to the third notch are convexly arranged on the third side surface, the first supporting plate is used for supporting the single-row output end of the single-row connecting piece, the second supporting plate is used for supporting the double-row output end of the double-row connecting piece, and the third supporting plate is used for supporting the single-row output end of the single-row connecting piece or the double-row output end of the double-row connecting piece.

By adopting the scheme, the single-row output ends of the single-row connecting pieces extending out of the first notch can be reliably supported by the first supporting plate, so that the electrical connection stability of the single-row output ends and the BMS board is conveniently ensured and improved; similarly, the double row output terminals of the double row connection tabs protruding from the second notch may be reliably supported by the second support plate, thereby facilitating securing and improving the electrical connection stability of the double row output terminals with the BMS board; similarly, the single row output terminal or the double row output terminal protruding from the third slot may be reliably supported by the third support plate, thereby facilitating and improving the electrical connection stability of the single row output terminal or the double row output terminal with the BMS board.

In one embodiment, the third side surface is convexly provided with a plurality of mounting posts for cooperating with fasteners to fix the BMS board.

By adopting the scheme, the battery pack shell can stably and reliably assemble the BMS board on one side of the first side surface in the second direction through the mounting columns, so that the single-row connecting sheets and the double-row connecting sheets which are assembled on the first side surface and the second side surface in a limiting manner are connected with the BMS board, and stable and reliable power connection relation is constructed.

In one embodiment, the third side surface is convexly provided with a plurality of positioning columns, and the positioning columns are used for being matched with the positioning holes of the BMS board to position the BMS board.

Through adopting above-mentioned scheme, the accurate assembled position and the assembled state of location BMS board of battery pack body accessible each reference column, and then can be convenient for accurate spacing assembly each list connection piece and each biserial connection piece and the relative position relation of BMS board on first side and second side, the accurate connection relation of establishing between them of being convenient for to can ensure and improve the equipment convenience and the equipment precision of battery pack.

In one embodiment, the battery pack case has a mounting cavity for mounting a battery pack, and the bottoms of the first groove, the second groove and the third groove are provided with welding holes communicated with the mounting cavity.

By adopting the scheme, the polarity end parts of the electric cores can be correspondingly exposed through the welding holes, so that the single-row connecting pieces and the double-row connecting pieces which are assembled in the first groove, the second groove and the third groove can conveniently and reliably establish the electric connection relation with the corresponding polarity end parts of the electric cores.

In one embodiment, the third groove comprises a first region for fitting the double row connecting piece and a second region for fitting the single row connecting piece, and the first region and the second region at least partially coincide.

Through adopting above-mentioned scheme, the third recess is optionally through the regional assembly list connection piece of second, or through the regional assembly biserial connection piece of the first of at least partial coincidence with the second, on this basis, can be on the basis of not relapse, the novel connection piece of mould sinking preparation again, the third recess adaptation of being convenient for assembles two kinds of different connection pieces to adapt to, satisfy the equipment demand of different capacity battery package, thereby have suitability, the usability of preferred. In addition, the first area and the second area are at least partially overlapped, the occupied space of the third groove can be compacted to a certain extent, and the cell rows are matched in arrangement.

In one embodiment, the first region includes two rows of weld holes that mate with the two rows of tabs, the second region includes one row of weld holes that mate with the single row of tabs, and the one row of weld holes of the second region coincides with one of the two rows of weld holes of the first region.

Through adopting above-mentioned scheme, can be when the third recess selectively passes through the regional assembly list of connection piece of second, the direct correspondence is listed as the welding hole and is set up an electric core and is listed as, and when the third recess selectively passes through the regional assembly biserial connection piece of first, the direct correspondence is listed as two welding holes and is set up two electric cores and is listed as, and need not to change the clearance of arranging between each electric core row of adjustment battery pack casing inside, thereby can be convenient for ensure and improve the regularity of arranging of electric core row, and be convenient for the inside design that is used for spacing each electric core of battery pack casing, and still be convenient for ensure and improve the equipment convenience of different capacity battery packs.

In one embodiment, a plurality of first positioning holes are formed in the bottom of the first groove and used for being matched with a welding jig to position the single-row connecting sheets;

a plurality of second positioning holes are formed in the bottom of the second groove and used for being matched with the welding jig to position the double-row connecting pieces;

the bottom of the third groove is provided with a plurality of first positioning holes and a plurality of second positioning holes.

By adopting the scheme, the welding jig of the single-row connecting sheet can be conveniently and accurately positioned through each first positioning hole, so that the welding jig can conveniently and accurately weld the single-row connecting sheet in the first groove or the third groove; similarly, the welding jig of accurate location biserial connection piece of accessible each second locating hole to be convenient for welding jig realizes the accurate welding of biserial connection piece in second recess or third recess. Based on this, the convenience of assembly and the assembly precision between battery pack case and single row connection piece and double row connection piece can be ensured and improved to a certain extent.

It is also an object of an embodiment of the present application to provide a battery pack, including the battery pack case, and:

a battery pack assembled in the battery pack case, the battery pack including 2N +2 cell rows arranged at intervals in the first direction;

the two single-row connecting pieces are respectively assembled in the two first grooves;

and the two rows of connecting pieces are 2N +1 and are respectively assembled in the third groove and each second groove.

By adopting the scheme, 2N +2 battery cell columns, two single-column connecting sheets and 2N +1 double-column connecting sheets can be assembled through the limiting of the battery pack shell, and the power connection relation of the 2N +2 battery cell columns is constructed through the two single-column connecting sheets and the 2N +1 double-column connecting sheets, so that a full-capacity battery pack is formed.

the battery pack is assembled in the battery enclosure body and comprises 2N +1 battery cell rows arranged at intervals along the first direction, and the 2N +1 battery cell rows are staggered with the first grooves opposite to the third grooves;

two single-row connecting pieces are arranged and respectively assembled in the third groove and the first groove staggered with the third groove;

and 2N double-row connecting pieces are arranged and are respectively assembled in the second grooves.

By adopting the scheme, one battery cell column can be arranged in an empty mode in the area where the first groove and the third groove are opposite, then 2N +1 battery cell columns, two single-column connecting pieces and 2N double-column connecting pieces are assembled in a limiting mode through the battery pack shell, and the power connection relation of the 2N +1 battery cell columns is constructed through the two single-column connecting pieces and the 2N double-column connecting pieces, so that the battery pack with the capacity reduced by one battery cell column compared with the previous embodiment is formed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a first schematic perspective view of a battery pack according to an embodiment of the present disclosure at full capacity, without single row tabs and double row tabs assembled;

fig. 2 is a second perspective view of the battery pack provided in fig. 1;

FIG. 3 is a first schematic perspective view of a battery pack according to an embodiment of the present disclosure at full capacity, with single row tabs and double row tabs assembled;

fig. 4 is a second perspective view of the battery pack provided in fig. 3;

fig. 5 is a first schematic perspective view of a battery pack provided in an embodiment of the present application when the capacity of a cell array is reduced and a single-array connecting piece and a double-array connecting piece are not assembled;

fig. 6 is a second perspective view of the battery pack provided in fig. 5;

fig. 7 is a first schematic perspective view of a battery pack provided in an embodiment of the present application when reducing the capacity of one cell array and assembling a single-array connecting sheet and a double-array connecting sheet;

fig. 8 is a second perspective view of the battery pack provided in fig. 7.

Wherein, in the figures, the respective reference numerals:

10-Battery pack case 101-first side 102-second side

103-first recess 1031-first notch 1032-first positioning hole

104-second recess 1041-second notch 1042-second positioning hole

105-third groove 1051-third notch 1052-first region

1053-second area 106-third side 1061-mounting post

1062-positioning column 1063-first supporting plate 1064-second supporting plate

1065-third support plate 107-assembly cavity 108-welding hole

20-single row connecting piece 201-single row output end 202-welding piece

30-double-row connecting sheet 301-double-row output end 40-BMS board

50-battery pack 501-battery cell array 5011-cylindrical battery cell

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The energy storage power supply is provided with a battery pack, the battery pack comprises a battery pack shell, electric cores assembled in the battery pack shell and connecting sheets assembled on the battery pack shell, and the electric cores are connected in series or in parallel through the connecting sheets to form a complete battery pack. The traditional battery pack shell can only be suitable for assembling a battery pack with fixed capacity, so that the capacities of the battery pack and the energy storage power supply are single. In order to provide products with various capacities to meet the demands of more consumers, manufacturers can only design different battery pack housings to adapt to battery packs with different sizes and capacities, so that the production cost rises sharply.

From this, this application embodiment provides a battery package casing, can be on the basis that need not to relapse, the novel connection piece of mould sinking preparation again, the group battery of two kinds of different capacities of adaptation equipment, the battery package of the two kinds of different capacities of adaptation shaping to can have suitability, the usability of preferred, can satisfy the equipment demand of different capacity battery packages better, and manufacturing cost is lower.

Specific implementations of the present application are described in more detail below with reference to specific embodiments:

referring to fig. 1, fig. 2, fig. 3, and fig. 7, an embodiment of the present application provides a battery pack case 10 having a first side 101 and a second side 102 opposite to each other; the first side surface 101 is provided with two first grooves 103 at intervals along a first direction a, and N second grooves 104 located between the two first grooves 103; the second side surface 102 is provided with a third groove 105 and N second grooves 104 at intervals along the first direction a; wherein N is a natural number, the first groove 103 is used for assembling a single-row connecting piece 20, the second groove 104 is used for assembling a double-row connecting piece 30, and the third groove 105 is used for selectively assembling the single-row connecting piece 20 or the double-row connecting piece 30.

It should be noted that, the inside of the battery pack case 10 has a space (hereinafter, the assembling cavity 107) for accommodating the battery pack 50, and after the battery pack 50 is assembled in the battery pack case 10, the battery pack case 10 can provide a limiting effect on the battery pack 50 to regulate and stabilize the structural layout of the battery pack 50 accommodated therein, and in addition, the battery pack case 10 can provide a reliable protection effect on the battery pack 50 accommodated therein to ensure and prolong the service life of the battery pack 50.

The first side 101 and the second side 102 of the battery pack case 10 correspond to two sides of the electrode of the battery pack 50, respectively. N is a natural number, that is, the number of the second grooves 104 is not limited, and in the present embodiment, N is 3.

A plurality of welding sheets 202 are arranged on each of the single-row connecting sheet 20 and the double-row connecting sheet 30, and the welding sheets 202 are used for being connected with electrodes of the cells in the battery pack 50 in a welding manner so as to realize series connection or parallel connection of the cells. The single-row connecting piece 20 is provided with one row of welding pieces 202, the double-row connecting piece 30 is provided with two rows of welding pieces 202, and the width of the double-row connecting piece 30 is larger than that of the single-row connecting piece 20. The welding lugs 202 on the single-row connecting lug 20 and the double-row connecting lug 30 are the same in shape and size, and the arrangement gaps are the same, but because the single-row connecting lug 20 is commonly used as a connecting lug of an output power supply, the width from the welding lug 202 to the side of the single-row connecting lug 20 in the single-row connecting lug 20 is larger than the width from the welding lug 202 to the side of the double-row connecting lug 30 in the double-row connecting lug 30, so that the single-row connecting lug 20 cannot be installed in the second groove 104.

It should be further noted that the first side surface 101 of the battery pack case 10 is sequentially provided with a first groove 103, N second grooves 104, and another first groove 103 along the first direction a, and the second side surface 102 is correspondingly provided with a third groove 105 and N second grooves 104 along the first direction a. Wherein a portion of the third grooves 105 of the second side 102 is located opposite to the first grooves 103 of the first side 101 arranged in the first direction a.

Based on this, battery package casing 10 accessible first recess 103 adaptation assembly can connect the single connection piece 20 that is listed as 501 of a battery core, can connect the double-row connection piece 30 that two adjacent battery cores were listed as 501 through second recess 104 adaptation assembly, optionally adapt to assembly single connection piece 20 or double-row connection piece 30 through third recess 105, and realize need not repeatedly, on the basis of the novel connection piece of mould preparation again, adapt to the group battery 50 of two kinds of different capacities of equipment, adapt to the battery package of two kinds of different capacities of shaping, thereby can have the suitability of preferred, the usability, can satisfy the equipment demand of different capacity battery packages better, and manufacturing cost is lower.

Specifically, referring to fig. 1, 2, 3, and 4, in one embodiment, the battery pack housing 10 may participate in assembling to form a full capacity battery pack. The battery pack includes a battery pack case 10, and a battery pack 50, a single-row connector tab 20, and a double-row connector tab 30. The battery pack 50 is assembled in the battery pack case 10, and the battery pack 50 includes 2N +2 (in the illustration, 2N +2 is 8) battery cell columns 501 arranged at intervals in the first direction a; two single-row connecting pieces 20 are arranged and are respectively assembled in the two first grooves 103; the double row connecting piece 30 is provided with 2N +1 (2N +1 ═ 7 in the drawing) pieces, and is fitted in the third groove 105 and each of the second grooves 104, respectively.

Based on this, 2N +2 cell columns 501, two single-column connecting pieces 20 and 2N +1 double-column connecting pieces 30 can be assembled in a limiting manner through the battery pack shell 10, and the power connection relation of the 2N +2 cell columns 501 is jointly constructed through the two single-column connecting pieces 20 and the 2N +1 double-column connecting pieces 30, so that a full-capacity battery pack is formed. In this embodiment, two single rows of connecting tabs 20, each fitted in two first recesses 103, respectively, serve as a positive output electrode and a negative output electrode of the battery pack for establishing a power connection relationship with other electrical devices.

Referring to fig. 5, 6, 7, and 8, in another embodiment, the battery pack case 10 may participate in assembling a battery pack with a reduced capacity of one cell row 501 compared to the previous embodiment. The battery pack includes a battery pack case 10, and a battery pack 50, a single-row connector tab 20, and a double-row connector tab 30. The battery pack 50 is assembled in the battery pack case 10, and the battery pack 50 includes 2N +1 (in the illustration, 2N +1 is 7) cell columns 501 arranged at intervals along the first direction a, where the 2N +1 cell columns 501 are staggered from the first groove 103 opposite to the third groove 105; two single-row connecting pieces 20 are arranged and respectively assembled in the third groove 105 and the first groove 103 staggered with the third groove 105; the double row connecting piece 30 is provided with 2N (2N ═ 6 in the drawing) pieces, and is fitted in each of the second grooves 104.

Based on this, one cell array 501 may be arranged in the area where the first groove 103 and the third groove 105 are opposite to each other, and then 2N +1 cell arrays 501, two single-array connecting pieces 20 and 2N double-row connecting pieces 30 are assembled in a limited manner through the pack case 10, and a power connection relationship of 2N +1 cell arrays 501 is established by the two single-array connecting pieces 20 and the 2N double-row connecting pieces 30, so that a battery pack with a capacity reduced by one cell array 501 compared to the previous embodiment is formed. In this embodiment, two single-row connecting pieces 20 respectively fitted in the first groove 103 and the third groove 105 which are displaced serve as a positive output pole and a negative output pole of the battery pack for establishing a power connection relationship with other electric devices.

Each cell column 501 includes a plurality of cylindrical cells 5011 arranged at intervals in the second direction b. To this end, the number of the cylindrical battery cells 5011 contained in each battery cell row 501 is equal in this embodiment, that is, the capacity of the battery pack is not changed by increasing or decreasing the number of the cylindrical battery cells 5011 contained in the battery cell rows 501, based on this, no matter which capacity of the battery pack is formed by assembling, the battery pack is all universal, common, and reusable, the single-row connecting sheet 20 and the double-row connecting sheet 30 can be used, and the novel connecting sheet can be manufactured without repeated and repeated opening of the mold, so that the production and assembly of the battery pack can be facilitated, the maximum output current and the peak output power of the battery pack can be ensured, and the usability of the battery pack can be ensured and improved.

The single-row connecting sheet 20 may be, but is not limited to, a nickel sheet, and the double-row connecting sheet 30 may be, but is not limited to, a nickel sheet.

Referring to fig. 1, fig. 2, fig. 3, and fig. 4, and referring to fig. 7, in the present embodiment, one end of the first recess 103 in the second direction b is provided with a first notch 1031 for communicating the first recess 103 to the outside; a second notch 1041 for communicating the second groove 104 to the outside is formed at one end of the second groove 104 in the second direction b; a third notch 1051 for communicating the third groove 105 to the outside is formed at one end of the third groove 105 in the second direction b; the first notch 1031 is used for mounting the single-row output 201 of the single-row connecting piece 20, the second notch 1041 is used for mounting the double-row output 301 of the double-row connecting piece 30, and the third notch 1051 is used for mounting the single-row output 201 of the single-row connecting piece 20 or the double-row output 301 of the double-row connecting piece 30.

Here, one end of the single-row tab 20 is provided with a single-row output terminal 201 for connection to a BMS (Battery Management System) board 40, one end of the double-row tab 30 is provided with a double-row output terminal 301 for connection to the BMS board 40, and the single-row tabs 20 and the double-row tabs 30 are connected to the BMS board 40 to establish a power connection relationship therebetween.

In the embodiment, because the two battery packs with different capacities are finally formed by using the two single-row connecting pieces 20 as the positive output electrode and the negative output electrode respectively, the width of the single-row output end 201 in the first direction a is greater than the width of the double-row output end 301 in the first direction a, so as to optimize the overcurrent performance of the single-row output end 201.

By adopting the above scheme, the first groove 103 and the third groove 105 can limit and assemble the single-row output end 201 of the single-row connecting piece 20 through the corresponding first notch 1031 and third notch 1051 when the single-row connecting piece 20 is limit-assembled therein, and guide the single-row output end 201 to extend to one side of the first side surface 101 in the second direction b; similarly, the second groove 104 and the third groove 105 can limit-fit the dip 301 of the double row connector 30 through the corresponding second notch 1041 and third notch 1051 when the double row connector 30 is limit-fitted therein, and guide the dip 301 to extend to the same side of the first side face 101 in the second direction b; therefore, the power connection relationship between the single row output 201 and the double row output 301 on the same side of the first side surface 101 in the second direction b can be conveniently and reliably established, and the power connection relationship between the single row connecting pieces 20 and the double row connecting pieces 30 can be stably and reliably established.

Referring to fig. 1, 2, 3, and 4, and referring to fig. 7, in the present embodiment, the battery pack case 10 further has a third side 106, the third side 106 is convexly provided with a first support plate 1063 disposed opposite to the first slot 1031, a second support plate 1064 disposed opposite to the second slot 1041, and a third support plate 1065 disposed opposite to the third slot 1051, the first support plate 1063 is used to support the single-row output end 201 of the single-row connecting piece 20, the second support plate 1064 is used to support the double-row output end 301 of the double-row connecting piece 30, and the third support plate 1065 is used to support the single-row output end 201 of the single-row connecting piece 20 or the double-row output end 301 of the double-row connecting piece 30. Wherein the third side 106 is located at one side of the first side 101 in the second direction b.

By adopting the above-described scheme, the single row output terminals 201 of the single row of the tabs 20 protruding from the first notches 1031 can be reliably supported by the first support plate 1063, thereby facilitating securing and improving the electrical connection stability of the single row output terminals 201 with the BMS board 40; similarly, the dual row output terminal 301 of the dual row connecting tab 30 protruding from the second notch 1041 can be securely supported by the second support plate 1064, thereby facilitating securing and improving the electrical connection stability of the dual row output terminal 301 with the BMS board 40; similarly, the single row output 201 or the dual row output 301 protruding from the third notch 1051 can be securely supported by the third support plate 1065, thereby facilitating and improving the electrical connection stability of the single row output 201 or the dual row output 301 to the BMS board 40.

Referring to fig. 1 and 5, in the present embodiment, a plurality of mounting posts 1061 are protruded from the third side 106, and the mounting posts 1061 are used for cooperating with fasteners to fix the BMS board 40.

By adopting the above-described scheme, the battery pack case 10 can stably and reliably mount the BMS board 40 at one side of the first side 101 in the second direction b through the mounting posts 1061, so that the single row tabs 20 and the double row tabs 30 mounted at the first side 101 and the second side 102 are limitedly coupled to the BMS board 40, and a stable and reliable power connection relationship is constructed.

Referring to fig. 1 and 5, in the present embodiment, a plurality of positioning posts 1062 are protruded from the third side 106, and the positioning posts 1062 are used for cooperating with the positioning holes of the BMS board 40 to position the BMS board 40.

By adopting the above scheme, the battery pack case 10 can accurately position the assembly position and the assembly state of the BMS board 40 through the positioning posts 1062, and then can facilitate accurate limiting of the relative position relationship between the single-row connecting pieces 20 and the double-row connecting pieces 30 assembled on the first side surface 101 and the second side surface 102 and the BMS board 40, and facilitate accurate construction of the connection relationship therebetween, thereby ensuring and improving the assembly convenience and the assembly accuracy of the battery pack.

Referring to fig. 1, 2 and 5, in the present embodiment, the battery pack case 10 has a mounting cavity 107 for mounting the battery pack 50, and the groove bottoms of the first groove 103, the second groove 104 and the third groove 105 are provided with welding holes 108 communicating with the mounting cavity 107. The number of the welding holes 108 is matched with the number and arrangement of the welding pieces 202 on the single-row connecting piece 20 and the double-row connecting piece 30.

By adopting the above scheme, the polarity end portions of the battery cells can be correspondingly exposed through the welding holes 108, so that the welding sheets 202 of the single-row connecting sheet 20 and the double-row connecting sheet 30 assembled in the first groove 103, the second groove 104 and the third groove 105 and the corresponding polarity end portions of the battery cells can conveniently and reliably establish an electrical connection relationship.

Referring to fig. 1, 3 and 7, in the present embodiment, the third groove 105 includes a first area 1052 and a second area 1053, the first area 1052 is used for assembling the dual row connecting pad 30, the second area 1053 is used for assembling the single row connecting pad 20, and the first area 1052 and the second area 1053 at least partially coincide.

By adopting the above scheme, the third groove 105 can be selectively assembled with a single-row connecting sheet 20 through the second region 1053, or assembled with a double-row connecting sheet 30 through the first region 1052 at least partially coinciding with the second region 1053, on the basis of which, the third groove 105 can be conveniently adapted to assemble two different connecting sheets on the basis of manufacturing a novel connecting sheet without repeated and repeated die sinking, so as to adapt to and meet the assembling requirements of battery packs with different capacities, thereby having better applicability and usability. In addition, the first region 1052 and the second region 1053 at least partially overlap, so that the occupied space of the third groove 105 can be further compacted to some extent, and the arrangement of the cell array 501 is matched.

Referring to fig. 1, 3 and 7, in the present embodiment, the first area 1052 includes two rows of solder apertures 108 matching with the two rows of connecting pads 30, the second area 1053 includes one row of solder apertures 108 matching with the single row of connecting pads 20, and the one row of solder apertures 108 of the second area 1053 coincides with one of the two rows of solder apertures 108 of the first area 1052.

Through adopting above-mentioned scheme, can be when third recess 105 is selectively through the regional 1053 assembly list connection piece 20 of second, the direct correspondence is listed as welding hole 108 and is set up a battery core and is listed as 501, and when third recess 105 is selectively through the regional 1052 assembly double row connection piece 30 of first, the direct correspondence is listed as welding hole 108 and is set up two battery cores and is listed as 501, and need not to change the clearance of arranging between each battery core of adjustment battery package casing 10 inside is listed as 501, thereby can be convenient for guarantee and improve the regularity of arranging of battery core and be convenient for the design of the inside structure that is used for spacing each battery core of battery package casing 10, and still be convenient for guarantee and improve the equipment convenience of different capacity battery packages.

Referring to fig. 5 and 6, in the present embodiment, a plurality of first positioning holes 1032 are disposed at the bottom of the first groove 103, and the first positioning holes 1032 are used for cooperating with a welding jig to position the single-row connecting sheet 20; a plurality of second positioning holes 1042 are arranged at the bottom of the second groove 104, and the second positioning holes 1042 are used for matching with a welding jig to position the double-row connecting sheet 30; the bottom of the third recess 105 is provided with a plurality of first positioning holes 1032 and a plurality of second positioning holes 1042.

By adopting the scheme, the welding jig of the single-row connecting piece 20 can be conveniently and accurately positioned through the first positioning holes 1032, so that the welding jig can realize accurate welding of the single-row connecting piece 20 in the first groove 103 or the third groove 105; similarly, the second positioning holes 1042 facilitate the accurate positioning of the welding jig for the double-row connecting piece 30, so that the welding jig realizes the accurate welding of the double-row connecting piece 30 in the second groove 104 or the third groove 105. Based on this, the ease of assembly and the accuracy of assembly between the battery pack case 10 and the single-row connecting pieces 20 and the double-row connecting pieces 30 can be secured and improved to some extent.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A battery pack case is characterized by comprising a first side surface and a second side surface which are oppositely arranged;

2. The battery pack case according to claim 1, wherein one end of the first groove in the second direction is provided with a first notch communicating the first groove to the outside;

one end of the third groove in the second direction is provided with a third notch for communicating the third groove to the outside;

3. The battery pack case of claim 2, wherein the battery pack case further comprises a third side surface, wherein the third side surface is convexly provided with a first support plate disposed opposite to the first notch for supporting a single row output end of a single row of connecting pieces, a second support plate disposed opposite to the second notch for supporting a double row output end of a double row connecting piece, and a third support plate disposed opposite to the third notch for supporting a single row output end of a single row connecting piece or a double row output end of a double row connecting piece.

4. The battery pack case of claim 3, wherein the third side surface is protrusively provided with a plurality of mounting posts for cooperating with fasteners to fix the BMS board,

or the third side surface is convexly provided with a plurality of positioning columns, and the positioning columns are used for being matched with the positioning holes of the BMS board to position the BMS board.

5. The battery pack case according to claim 1, wherein the battery pack case has a fitting cavity for fitting a battery pack, and the groove bottoms of the first groove, the second groove, and the third groove are each provided with a welding hole communicating with the fitting cavity.

6. A battery pack case according to any one of claims 1 to 5, wherein the third recess comprises a first region for fitting the double row connecting tab and a second region for fitting the single row connecting tab, and the first region and the second region at least partially coincide.

7. The battery pack case of claim 6, wherein the first region includes two columns of weld holes that mate with the two columns of connecting tabs, and the second region includes one column of weld holes that mate with the single column of connecting tabs, the one column of weld holes of the second region coinciding with one of the two columns of weld holes of the first region.

8. The battery pack shell according to any one of claims 1 to 5, wherein a plurality of first positioning holes are formed at the bottom of the first groove and used for being matched with a welding jig to position the single-row connecting pieces;

a plurality of second positioning holes are formed in the bottom of the second groove and used for being matched with a welding jig to position the double-row connecting pieces;

9. A battery pack comprising the battery pack case according to any one of claims 1 to 8, and:

10. A battery pack comprising the battery pack case according to any one of claims 1 to 8, and: