Shell, battery module and electric equipment

Abstract

The embodiment of the utility model relates to the technical field of batteries, and particularly discloses a shell, a battery module and electric equipment, the shell comprises a first end plate, a second end plate, a first side plate and a second side plate; the first end plate comprises a first plate body, a first fixing part and a second fixing part, and the first fixing part and the second fixing part are oppositely arranged on the first plate body; the second end plate comprises a second plate body, a third fixing part and a fourth fixing part, and the third fixing part and the fourth fixing part are oppositely arranged on the second plate body; the second side plate and the first side plate are oppositely arranged; one end of the first side plate is fixed with the first fixing part, and the other end of the first side plate is fixed with the third fixing part; one end of the second side plate is fixed to the third fixing part, and the other end of the second side plate is fixed to the fourth fixing part. According to the embodiment of the utility model, the cost can be reduced.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to battery technology field, in particular to a kind of shell, battery module and electric equipment. BACKGROUND

[0002] As Figure 1 And Figure 2 As shown in the battery module 1' as the core component of battery pack, directly influence the reliability of battery pack, cost etc., battery module 1' usually includes battery assembly 100' and shell (not marked), battery assembly 100' includes multiple well arranged and electrically connected battery monomer 110', shell includes two side plates 300' and two end plates 200', two side plates 300' are oppositely arranged, two end plates 200' are oppositely arranged, two side plates 300' and two end plates 200' are combined to form installation space (not marked), and battery assembly 100' is arranged in installation space.

[0003] The inventor of the utility model in the process of realizing the utility model, found that: the current battery module 1' when assembling, often use stainless steel band 400' to bind fixed shell.I.e., when battery assembly 100' is set in installation space, then through stainless steel band 400' set in shell, to complete assembly, and in stainless steel band 400' set shell.When, the processing of stainless steel band 400' needs to use special module processing, and the machining precision is high, so stainless steel band 400' processing cost is high.In addition, stainless steel band 400' when assembling, need battery assembly 100' is pressed into stainless steel band 400' after, to facilitate assembly, need thicker sponge to absorb size, high requirement to assembly process operation process, and this brings inconvenience to assembly. UTILITY MODEL CONTENTS

[0004] The embodiment of the utility model provides a kind of shell, battery module and electric equipment, can reduce cost.

[0005] To solve the above technical problems, one technical scheme adopted by the utility model is: provide a kind of shell, shell includes first end plate, second end plate, first side plate and second side plate;First end plate includes first plate body, first fixed part and second fixed part, first fixed part and second fixed part are oppositely arranged in first plate body along the first direction;Second end plate includes second plate body, third fixed part and fourth fixed part, third fixed part and fourth fixed part are oppositely arranged in second plate body along the first direction, first plate body and second plate body are oppositely arranged along the second direction, first fixed part and second fixed part are located in the side of first plate body away from second plate body, third fixed part and fourth fixed part are located in the side of second plate body away from first plate body;Second side plate and first side plate are oppositely arranged along the first direction;Wherein, one end of first side plate and first fixed part at least partially overlap, the other end of first side plate and third fixed part at least partially overlap, and one end of first side plate is fixed with first fixed part, the other end of first side plate is fixed with third fixed part;One end of second side plate and second fixed part at least partially overlap, the other end of second side plate and fourth fixed part at least partially overlap, and one end of second side plate is fixed with third fixed part, the other end of second side plate is fixed with fourth fixed part, and the first direction is perpendicular to the second direction.

[0006] To solve the above technical problems, another technical scheme adopted by the utility model is: provide a kind of battery module, including battery assembly and the shell as described in any one of the above embodiments;Battery assembly is housed in shell, along the second direction, the first plate body and second plate body of shell are respectively arranged at the two sides of battery assembly, along the first direction, the first side plate and second side plate of shell are respectively arranged at the two sides of battery module, and the first direction and the second direction are perpendicular.

[0007] To solve the above technical problems, another technical scheme adopted by the utility model is: provide a kind of electric equipment, including the shell as described in any one of the above embodiments.

[0008] The embodiment of the utility model has the advantages that unlike the prior art, the embodiment of the utility model provides a shell, the shell comprises a first end plate, a second end plate, a first side plate and a second side plate, the second side plate and the first side plate are oppositely arranged along a first direction, the first end plate and the second end plate are oppositely arranged along a second direction, the first end plate comprises a first fixed part and a second fixed part, the second end plate comprises a third fixed part and a fourth fixed part, along the first direction, one end of the first side plate at least partially overlaps and is fixed with the first fixed part, the other end of the first side plate at least partially overlaps and is fixed with the third fixed part, along the first direction, one end of the second side plate at least partially overlaps and is fixed with the second fixed part, the other end of the second side plate at least partially overlaps and is fixed with the fourth fixed part. After the first side plate is fixed with the first fixed part and the third fixed part respectively, not only the risk of the first side plate moving along the second direction relative to the first end plate can be reduced, but also the risk of the first side plate overturning relative to the first end plate can be reduced, similarly, after the second side plate is fixed with the second fixed part and the fourth fixed part respectively, not only the risk of the second side plate moving along the second direction relative to the second end plate can be reduced, but also the risk of the second side plate overturning relative to the second end plate can be reduced, so that the firmness of the shell is improved, and the risk of the shell deforming is reduced. In this way, the first side plate is fixedly connected with the first end plate and the second end plate respectively, and the second side plate is fixedly connected with the first end plate and the second end plate respectively, so that assembly can be completed without setting a stainless steel bandage. In this way, not only the cost is reduced, but also the assembly of the shell is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0010] Figure 1 is a perspective view of a battery module in the prior art;

[0011] Figure 2 is an exploded view of a battery module in the prior art;

[0012] Figure 3 is a perspective view of a battery module of the embodiment of the utility model when the first pressing plate, the second pressing plate, the third pressing plate and the fourth pressing plate are not arranged;

[0013] Figure 4 is an exploded view of a battery module of the embodiment of the utility model when the first pressing plate, the second pressing plate, the third pressing plate and the fourth pressing plate are not arranged;

[0014] Figure 5This is a perspective view of the first end plate of this utility model embodiment when the first positioning member and the third positioning member are not provided;

[0015] Figure 6 This is an embodiment of the present utility model. Figure 1 Exploded view of the first end plate without the first and third positioning components;

[0016] Figure 7 This is an embodiment of the present utility model. Figure 5 BB section view in the middle;

[0017] Figure 8 This is an embodiment of the present utility model. Figure 7 Enlarged view of part A in the image;

[0018] Figure 9 This is an embodiment of the present utility model. Figure 7 Enlarged view of part B in the image;

[0019] Figure 10 This is an embodiment of the present utility model. Figure 3 AA section view in the middle;

[0020] Figure 11 This is an embodiment of the present utility model. Figure 10 Enlarged view of section C in the image;

[0021] Figure 12 This is a perspective view of a battery module according to an embodiment of the present invention, wherein the battery module is provided with a first pressure plate, a second pressure plate, a third pressure plate and a fourth pressure plate;

[0022] Figure 13 This is an exploded view of the battery module of this utility model embodiment when it is provided with a first pressure plate, a second pressure plate, a third pressure plate and a fourth pressure plate;

[0023] Figure 14 This is a perspective view of the first end plate of this utility model embodiment when it is provided with a first positioning member and a third positioning member;

[0024] Figure 15 This is an exploded view of the first end plate of this utility model embodiment when it is provided with a first positioning member and a third positioning member;

[0025] Figure 16 This is an exploded view of the first end plate, first side plate, first pressure plate, and first screw connector of this utility model embodiment;

[0026] Figure 17 This is an embodiment of the present utility model. Figure 12 CC section view in the middle;

[0027] Figure 18 This is an embodiment of the present utility model. Figure 17 Enlarged view of part D in the image;

[0028] Figure 19 is the D-D cross-sectional view in the embodiment of the utility model Figure 12

[0029] Figure 20 is the E part enlarged view in the embodiment of the utility model Figure 19

[0030] Mark explanation:

[0031] 1, 1', battery module;

[0032] 100, 100', battery assembly; 110, 110', battery monomer;

[0033] 200, first end plate; 210, first plate body; 220, first fixed part; 221, first positioning piece; 230, second fixed part; 231, third positioning piece; 240, first mounting part; 241, first main section; 242, first bending section; 243, first hoisting hole; 250, second mounting part; 251, second main section; 252, second bending section; 253, second hoisting hole;

[0034] 300, second end plate; 310, second plate body; 320, third fixed part; 321, second positioning piece; 330, third mounting part; 331, third hoisting hole;

[0035] 400, first side plate; 410, third plate body; 411, first through hole; 412, second through hole; 413, first positioning hole; 414, second positioning hole; 420, fifth fixed part; 421, first screwing part;

[0036] 500, second side plate; 510, fourth plate body; 511, third through hole; 512, third positioning hole; 520, seventh fixed part; 521, second screwing part;

[0037] 600, integrated busbar assembly; 610, fifth through hole; 620, sixth through hole;

[0038] 700, first pressing plate; 701, first through hole; 702, fifth positioning hole; 710, second pressing plate; 701, second through hole; 712, sixth positioning hole; 720, third pressing plate; 721, third through hole; 722, seventh positioning hole; 730, fourth pressing plate; 731, fourth through hole; 732, eighth positioning hole;

[0039] ​​800, first insulating sheet; 801, fifth through hole; 802, ninth positioning hole; 803, sixth through hole; 804, tenth positioning hole; 810, second insulating sheet; 811, seventh through hole; 812, tenth positioning hole; 813, twelfth positioning hole; 820, third insulating sheet; 830, fourth insulating sheet; 840, fifth insulating sheet;

[0040] 900, first pull-rivet nut; 901, second pull-rivet nut; 902, third pull-rivet nut; 903, fourth pull-rivet nut; 904, first screwing piece; 905, second screwing piece; 906, third screwing piece; 907, fourth screwing piece; 908, fifth screwing piece; 909, sixth screwing piece;

[0041] 200', end plate; 300', side plate; 400', stainless steel strap. DETAILED DESCRIPTION

[0042] For the convenience of understanding the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used in the present specification are for illustrative purposes only.

[0043] Unless otherwise defined, all technical and scientific terms used in the present specification are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present specification, which are used in the description of the present application in the specification, are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more related listed items.

[0044] Please refer to Figure 3 and Figure 4 The battery module 1 includes a battery assembly 100, a housing, and an integrated busbar assembly 600. The battery assembly 100 is disposed in the housing, and the integrated busbar assembly 600 is disposed in the housing and electrically connected to the battery assembly 100.

[0045] For the above-mentioned shell, the shell comprises a first end plate 200, a second end plate 300, a first side plate 400, and a second side plate 500. The first side plate 400 and the second side plate 500 are respectively arranged on two sides of the battery assembly 100. The first end plate 200 and the second end plate 300 are respectively arranged on the other two sides of the battery assembly 100, and the two ends of the first end plate 200 are respectively connected with the first side plate 400 and the second side plate 500, and the two ends of the second end plate 300 are respectively connected with the first side plate 400 and the second side plate 500. The integrated busbar assembly 600 is connected to the top of the first end plate 200, the second end plate 300, the first side plate 400, and the second side plate 500, and the integrated busbar assembly and the battery assembly 100 are electrically connected. The first end plate 200, the second end plate 300, the first side plate 400, the second side plate 500, and the integrated busbar assembly 600 enclose a mounting space (not marked), and the battery assembly 100 is arranged in the mounting space to realize the assembly of the battery module.

[0046] For the above-mentioned battery assembly 100, please continue to refer to Figure 4 , the battery assembly 100 comprises a plurality of battery monomers 110, and the battery monomer 110 is provided with a positive electrode (not marked) and a negative electrode (not marked). Along the width direction of the battery monomer 110, the plurality of battery monomers 110 are arranged in sequence, and the adjacent two battery monomers 110 are arranged in adhesion, and the plurality of battery monomers 110 are connected in series or parallel through the positive electrode and the negative electrode. In some embodiments, the battery assembly 100 can further comprise a plurality of insulating sheets (not shown in the figure), and an insulating sheet is arranged between the adjacent two battery monomers 110 to improve the insulation performance between the adjacent battery monomers.

[0047] For the convenience of understanding, the following first defines the direction as follows: the first direction, the second direction, and the third direction are perpendicular to each other. The first direction is the length direction of the battery monomer 110, the second direction is the width direction of the battery monomer 110, and the third direction is the height direction of the battery monomer 110. Along the third direction, the positive electrode and the negative electrode of the battery monomer 110 are at one end of the battery monomer 110, which is the top, and the other end away from the positive electrode and the negative electrode of the battery monomer 110, which is the bottom.

[0048] For the above-mentioned first end plate 200, please refer to Figures 4-6The first end plate 200 includes a first plate body 210, a first fixing portion 220, a second fixing portion 230, a first mounting portion 240, and a second mounting portion 250. The first plate body 210 is provided as a square plate. The first fixing portion 220 and the second fixing portion 230 are oppositely arranged on two sides of the first plate body 210 along a first direction. The first mounting portion 240 and the second mounting portion 250 are oppositely arranged on the other two sides of the first plate body 210 along a third direction. The first fixing portion 220, the second fixing portion 230, the first mounting portion 240, and the second mounting portion 250 are all arranged perpendicularly to the first plate body 210. In some embodiments, the first fixing portion 220, the second fixing portion 230, the first mounting portion 240, and the second mounting portion 250 are integrally formed with the first plate body 210.

[0049] Further, the first mounting portion 240 includes a first main body segment 241 and two first bending segments 242, which are arranged on two sides of the first main body segment 241 along the first direction. The second mounting portion 250 includes a second main body segment 251 and two second bending segments 252, which are arranged on two sides of the second main body segment 251 along the first direction. The first main body segment 241 and the second main body segment 251 are arranged along the first direction, and oppositely arranged on two sides of the first plate body 210 along the third direction. One first bending segment 242 is fixedly attached to the first fixing portion 220, and the other first bending segment 242 is fixedly attached to the second fixing portion 230. One second bending segment 252 is fixedly attached to the first fixing portion 220, and the other second bending segment 252 is fixedly attached to the second fixing portion 230. In some embodiments, the two first bending segments 242 and the first main body segment 241 are integrally formed, thereby improving the firmness of the first mounting portion 240, and the two second bending segments 252 and the second main body segment 251 are integrally formed, thereby improving the firmness of the second mounting portion 250.

[0050] It should be noted that, since the first fixing portion 220, the second fixing portion 230, the first mounting portion 240, and the second mounting portion 250 are integrally formed with the first plate body 210, and the two first bending segments 242 and the first main body segment 241 are integrally formed, and the two second bending segments 252 and the second main body segment 251 are integrally formed, the first end plate 200 can be processed by sheet metal processing. The first plate body 210, the first fixing portion 220, the second fixing portion 230, the first mounting portion 240, and the second mounting portion 250 are all located in the same plane, and the bending of the first fixing portion 220, the second fixing portion 230, the first mounting portion 240, and the second mounting portion 250, as well as the bending of the first bending segments 242 and the second bending segments 252 can be achieved by using a general bending knife, without the need for customized molds or other machining, thereby reducing the cost.

[0051] In some embodiments, please refer to Figures 7-9 The battery module 1 further comprises three first rivet nuts 900 and three third rivet nuts 902. In the first direction, one end of the first fixed part 220 is riveted to the first bent section 242 by one first rivet nut 900, and the other end of the first fixed part 220 is riveted to the second bent section 252 by one first rivet nut 900. The remaining one first rivet nut 900 is directly fixed to the first fixed part 220 and located between the first bent section 242 and the second bent section 252. The first rivet nut 900 is provided with a first screw hole for connecting with the first side plate 400. The first fixed part 220 is connected with the first side plate 400 through the first screw holes of the three first rivet nuts 900, achieving three-point connection, which is conducive to improving the connection firmness.

[0052] In the first direction, one end of the second fixed part 230 is riveted to the first bent section 242 by one third rivet nut 902, and the other end of the second fixed part 230 is riveted to the second bent section 252 by one third rivet nut 902. The remaining one third rivet nut 902 is directly fixed to the second fixed part 230 and located between the first bent section 242 and the second bent section 252. The third rivet nut 902 is provided with a third screw hole for connecting with the second side plate 500. The second fixed part 230 is connected with the second side plate 500 through the first screw holes of the three third rivet nuts 902, achieving three-point connection, which is conducive to improving the connection firmness.

[0053] In order to facilitate the reader to understand the riveting method, the following describes the riveting of the first fixed part 220 to the first bent section 242 by one first rivet nut 900:

[0054] The first fixed part 220 is provided with a first connecting hole (not marked), and the first bent section 242 is provided with a second connecting hole (not marked). After the first rivet nut 900 is sequentially arranged in the first connecting hole and the second connecting hole, the first rivet nut 900 is deformed by a rivet gun to form a deformed part with a larger transverse dimension. The head of the first rivet nut 900 and the deformed part are located at the inner side and the outer side of the first end plate 200, respectively, to clamp and fix the first fixed part 220 and the first bent section 242. The deformed part is located at the inner side of the first end plate 200, and the aperture of the first screw hole is arranged towards the outer side of the first end plate 200, so as to facilitate the connection of the first end plate 200 with the first side plate 400. In this way, not only is the fixed connection of the first bent section 242 and the first fixed part 220 facilitated, and the connection strength is improved, but the first rivet nut 900 also provides the first screw hole, which facilitates the connection of the first end plate 200 with the first side plate 400, and is particularly suitable when the first end plate 200 is a thin-walled part.

[0055] Of course, the number of the first pull rivet nuts 900 can be more than three, such as two, four, etc. The plurality of first pull rivet nuts 900 provide a plurality of first screw holes, which can realize the multi-point connection between the first fixed part 220 and the first side plate 400. Similarly, the number of the third pull rivet nuts 902 can also be more than three, such as two, four, etc. The plurality of third pull rivet nuts 902 provide a plurality of third screw holes, which can realize the multi-point connection between the second fixed part 230 and the second side plate 500.

[0056] It can be understood that the connection between the first fixed part 220 and the first bending section 242, the connection between the first fixed part 220 and the second bending section 252, the connection between the second fixed part 230 and the first bending section 242, and the connection between the second fixed part 230 and the second bending section 252 are not limited to the pull rivet connection, but can also be connected by other means, such as welding or clamping, etc.

[0057] Further, the first mounting part 240 is provided with a first lifting hole 243, and the second mounting part 250 is provided with a second lifting hole 253. The first lifting hole 243 and the second lifting hole 253 are used for lifting the battery module. In some embodiments, the number of the first lifting hole 243 and the second lifting hole 253 is two, and the two second lifting holes 253 and the two first lifting holes 243 are arranged along the first direction. Of course, the number of the first lifting hole 243 and the second lifting hole 253 can be more than two, such as three, four, etc. It can be understood that the first end plate 200 can be made by sheet metal process, and the first lifting hole 243 and the second lifting hole 253 can be performed together with the blanking process, so as to reduce the processing cost and improve the efficiency.

[0058] For the above-mentioned second end plate 300, please refer to Figure 4 , and refer to Figure 10 , the second end plate 300 includes a second plate body 310, a third fixed part 320, a fourth fixed part (not marked), a third mounting part 330, and a fourth mounting part (not marked). The second plate body 310 is provided as a square plate. Along the first direction, the third fixed part 320 and the fourth fixed part are oppositely arranged on the two sides of the second plate body 310. Along the third direction, the third mounting part 330 and the fourth mounting part are oppositely arranged on the two sides of the second plate body 310. The third fixed part 320, the fourth fixed part, the third mounting part 330, and the fourth mounting part are all arranged perpendicular to the second plate body 310. In some embodiments, the third fixed part 320, the fourth fixed part, the third mounting part 330, and the fourth mounting part are integrally formed with the second plate body 310.

[0059] In the second direction, the second plate body 310 and the first plate body 210 are oppositely arranged, and the battery assembly 100 is clamped between the first plate body 210 and the second plate body 310. The third fixing part 320, the fourth fixing part, the third mounting part 330, and the fourth mounting part are all located on the side of the second plate body 310 away from the battery assembly 100. The first fixing part 220, the second fixing part 230, the first mounting part 240, and the second mounting part 250 are all arranged on the side of the first plate body 210 away from the battery assembly 100.

[0060] Further, the third mounting part 330 includes a third main body segment (not shown) and two third bending segments (not shown). In the first direction, the two third bending segments are respectively arranged on both sides of the third main body segment. The fourth mounting part includes a fourth main body segment and two fourth bending segments. In the first direction, the two fourth bending segments are respectively arranged on both sides of the fourth main body segment. The third main body segment and the fourth main body segment are arranged in the first direction, and the third bending segment and the fourth bending segment are arranged in the third direction. The third main body segment and the fourth main body segment are oppositely arranged. One third bending segment is fixedly attached to the third fixing part 320, and the other third bending segment is fixedly attached to the fourth fixing part. One fourth bending segment is fixedly attached to the third fixing part 320, and the other fourth bending segment is fixedly attached to the fourth fixing part. In some embodiments, the two third bending segments and the third main body segment are integrally formed, and the two fourth bending segments and the fourth main body segment are integrally formed. It can be understood that, similar to the first end plate 200, the second end plate 300 can also be made by sheet metal processing, and the technical effects of the second end plate 300 will not be repeated here.

[0061] In some embodiments, the battery module 1 further includes three second rivet nuts 901 and three fourth rivet nuts 903. In the first direction, one end of the third fixing part 320 is rivet-fixed with the third bending segment through one second rivet nut 901, and the other end of the third fixing part 320 is rivet-fixed with the fourth bending segment through one second rivet nut 901. The remaining one second rivet nut 901 is directly fixed to the third fixing part 320 and located between the third bending segment and the fourth bending segment. The second rivet nut 901 is provided with a second screw hole for connecting with the first side plate 400. The third fixing part 320 is connected with the first side plate 400 through the second screw holes of the three second rivet nuts 901, achieving three-point connection, which is conducive to improving the connection firmness.

[0062] In the first direction, one end of the fourth fixed part is fixed by a fourth pull rivet nut 903 with the third bending section, and the other end of the fourth fixed part is fixed by a fourth pull rivet nut 903 and the fourth bending section. The remaining one fourth pull rivet nut 903 is directly fixed to the fourth fixed part and located between the third bending section and the fourth bending section. The fourth pull rivet nut 903 is provided with a fourth screw hole for connecting with the second side plate 500. The fourth fixed part is connected with the second side plate 500 through the fourth screw holes of the three fourth pull rivet nuts 903, realizing three-point connection, which is conducive to improving the connection firmness.

[0063] It can be understood that the second pull rivet nut 901 and the fourth pull rivet nut 903 can be provided with multiple, and are not limited to three.

[0064] It can be understood that the third fixed part 320 and the third bending section, the third fixed part 320 and the fourth bending section, the fourth fixed part and the third bending section, and the fourth fixed part and the fourth bending section are not limited to pull rivet fixing, but can also be fixed and connected by other ways, such as welding or clamping.

[0065] Further, the third mounting part 330 is provided with a third lifting hole 331, and the third mounting part 330 is provided with a fourth lifting hole, which is used for lifting the battery module. In some embodiments, the number of the third lifting hole 331 and the fourth lifting hole is two, and the two fourth lifting holes and the two third lifting holes 331 are spaced apart along the first direction. Of course, the number of the third lifting hole 331 and the fourth lifting hole can be multiple, not limited to two, for example, three, four, etc.

[0066] For the above-mentioned first side plate 400, please refer to Figure 3 、 Figure 4 and Figure 10 , the first side plate 400 includes a third plate body 410, a fifth fixed part 420 and a sixth fixed part (not marked), and the fifth fixed part 420 and the sixth fixed part are both vertically arranged on the side of the third plate body 410 facing the battery assembly 100. In the third direction, the fifth fixed part 420 and the sixth fixed part are arranged at both ends of the third plate body 410, the fifth fixed part 420 is arranged at the top of the third plate body 410, and the sixth fixed part is arranged at the bottom of the third plate body 410. The battery assembly 100 is arranged between the fifth fixed part 420 and the sixth fixed part, and the fifth fixed part 420 and the sixth fixed part limit the battery assembly 100.

[0067] In some embodiments, the fifth fixing part 420 further comprises a first screwing part 421, which is arranged on the side of the fifth fixing part 420 away from the battery assembly 100. A plurality of first screwing parts 421 are arranged at intervals along the second direction. The first screwing part 421 is provided with a fifth screw hole for connecting the integrated busbar assembly 600. It can be understood that the fifth screw hole can be directly arranged on the first screwing part 421, or a fifth connecting piece provided with a fifth screw hole can be arranged on the first screwing part 421.

[0068] The first side plate 400 is provided with a first through hole 411 and a second through hole 412 at both ends thereof along the second direction, and each of the first through hole 411 and the second through hole 412 is provided with three. The battery module 1 further comprises three first screwing pieces 904 and three second screwing pieces 905. A first screwing piece 904 is sequentially threaded through a first through hole 411 and screwed into a first screw hole of a first rivet nut 900. A second screwing piece 905 is sequentially threaded through a second through hole 412 and screwed into a second screw hole of a second rivet nut 901, so as to realize the partial overlapping and fixing of the two ends of the first side plate 400 with the first end plate 200 and the second end plate 300 respectively.

[0069] For the above-mentioned second side plate 500, please refer to Figure 3 、 Figure 4 、 Figure 10 and Figure 11 , the second side plate 500 comprises a fourth plate body 510, a seventh fixing part 520 and an eighth fixing part (not shown). The seventh fixing part 520 and the eighth fixing part are both arranged perpendicularly on the fourth plate body 510, and are both arranged on the side of the fourth plate body 510 facing the battery assembly 100. Along the third direction, the seventh fixing part 520 and the eighth fixing part are arranged at both ends of the fourth plate body 510, the seventh fixing part 520 is arranged at the top of the fourth plate body 510, and the eighth fixing part is arranged at the bottom of the fourth plate body 510. The battery assembly 100 is clamped between the seventh fixing part 520 and the eighth fixing part, and the seventh fixing part 520 and the eighth fixing part limit the battery assembly 100.

[0070] In some embodiments, the seventh fixing part 520 further comprises a second screwing part 521, which is arranged on the side of the seventh fixing part 520 away from the battery assembly 100. The second screwing part 521 is provided with a sixth screw hole for connecting the integrated busbar assembly 600. Optionally, the number of the second screwing part 521 can be a plurality, and a plurality of second screwing parts 521 are arranged at intervals along the second direction. The sixth screw holes of the plurality of second screwing parts 521 are all used for screwing with the integrated busbar assembly 600 to realize multiple-point connection.

[0071] The second side plate 500 is provided with three third through holes 511 and three fourth through holes at two ends along the second direction. The battery module 1 further comprises three third screw members 906 and three fourth screw members 907. A third screw member 906 sequentially passes through a third through hole 511 and is screwed into a third screw hole of a third rivet nut 902. A fourth screw member 907 sequentially passes through a fourth through hole and is screwed into a fourth screw hole of a fourth rivet nut 903, so that the two ends of the second side plate 500 are partially overlapped and fixed with the first end plate 20 and the second end plate 300 respectively.

[0072] For the integrated busbar assembly 600 described above, please refer to Figure 2 The battery module 1 further comprises a plurality of fifth screw members 908 and a plurality of sixth screw members 909. Along the third direction, the top surfaces of the first mounting portion 240, the third mounting portion 330, the fifth fixing portion, and the seventh fixing portion 520 are located in the same plane, and the integrated busbar assembly 600 is arranged on the top surfaces of the first mounting portion 240, the third mounting portion 330, the fifth fixing portion, and the seventh fixing portion 520. The integrated busbar assembly 600 is provided with a plurality of fifth through holes 610 and a plurality of sixth through holes 620. A fifth screw member 908 is screwed into a fifth screw hole after passing through a fifth through hole 610, and a sixth screw member 909 is screwed into a sixth screw hole after passing through a sixth through hole 620, so as to fix the integrated busbar assembly 600 to the first side plate and the second side plate.

[0073] In order to facilitate the reader to understand the technical effects of the partial overlap and fixation of the two ends of the first side plate with the first end plate and the second end plate, the following force analysis of the first side plate is carried out:

[0074] Please refer to Figure 10 and Figure 11When the battery assembly 100 expands or is subjected to external force, the first side plate 400 is subjected to a pushing force F2 parallel to the first direction, a pushing force F1 parallel to the second direction, and a flipping force F3 driving the first side plate 400 to flip relative to the first end plate 200 and the second end plate 300. FC1 is the interaction force between the first end plate 200 and the first side plate 400 to counteract the pushing force F1 parallel to the second direction, FT1 is the interaction force between the first end plate 200 and the first side plate 400 to counteract the pushing force F2 parallel to the first direction, and N1 is the flipping torque between the first end plate 200 and the first side plate 400 to counteract the interaction about the third direction. The first side plate 400 is attached to the first fixed portion 220, and the first side plate 400 is connected to the first end plate 200 by three first threaded members 904. The first end plate 200 and the first side plate 400 generate FC1 and FT1 through the three first threaded members 904, thereby counteracting F1 and F2. The first side plate 400 is attached to the first end plate 200 and the second end plate 300, respectively, to generate N1, thereby counteracting F3, thereby reducing the displacement of the first side plate 400 relative to the first end plate 200, thereby improving the ability of the shell to resist deformation.

[0075] Meanwhile, the first fixed portion 220 and the first bent section 242 are attached and connected by a first pull nut 900, and the first fixed portion 220 and the second bent section 252 are attached and connected by a first pull nut 900, thereby improving the rigidity of the first fixed portion 220, thereby improving the ability of the first end plate to resist deformation. Further, the first fixed portion 220 and the first side plate 400 are in surface-to-surface contact, which not only limits the relative movement along the first direction, but also limits the relative rotation about the third direction, thereby improving the ability to resist deformation.

[0076] In some embodiments, referring to Figure 12 and Figure 13 , the battery module 1 further comprises a first pressing plate 700, a second pressing plate 710, a third pressing plate 720, and a fourth pressing plate 730. Along the third direction, the first pressing plate 700 is spaced apart by three first through holes 701. The second pressing plate 710 is spaced apart by three second through holes 701. The third pressing plate 720 is spaced apart by three third through holes 721. The fourth pressing plate 730 is spaced apart by three fourth through holes 731.

[0077] In the second direction, the first pressing plate 700 and the second pressing plate 710 are respectively arranged at two ends of the first side plate 400, and the first pressing plate 700 and the second pressing plate 710 are both arranged on the outer side of the first side plate 400. The third pressing plate 720 and the fourth pressing plate 730 are respectively arranged at two ends of the second side plate 500, and the third pressing plate 720 and the fourth pressing plate 730 are both arranged on the outer side of the second side plate 500. A first screw member 904 is sequentially arranged in a first through hole 701 and a first through hole 411, and is screwed into a first screw hole of a first pull rivet nut 900. A second screw member 905 is sequentially arranged in a second through hole 701 and a second through hole 412, and is screwed into a second screw hole of a second pull rivet nut 901. A third screw member 906 is sequentially arranged in a third through hole 721 and a third through hole 511, and is screwed into a third screw hole of a third pull rivet nut 902. A fourth screw member 907 is sequentially arranged in a fourth through hole 731 and a fourth through hole, and is screwed into a fourth screw hole of a fourth pull rivet nut 903. When the first side plate 400 is arranged on the first end plate 200 and the second end plate 300 through the first pressing plate 700 and the second pressing plate 710, it is beneficial to reduce the risk of overturning of the first side plate 400 relative to the first end plate 200 and the second end plate 300. Similarly, when the second side plate 500 is arranged on the first end plate 200 and the second end plate 300 through the third pressing plate 720 and the fourth pressing plate 730, it is beneficial to reduce the risk of overturning of the second side plate 500 relative to the first end plate 200 and the second end plate 300.

[0078] Further, in the third direction, the first pressing plate 700 is spaced apart from a plurality of fifth positioning holes 702, the second pressing plate 710 is spaced apart from a plurality of sixth positioning holes 712, the third pressing plate 720 is spaced apart from a plurality of seventh positioning holes 722, and the fourth pressing plate 730 is spaced apart from a plurality of eighth positioning holes 732.

[0079] Please refer to Figures 13-16 The first fixing portion 220 is provided with a first positioning member 221 in a direction away from the battery assembly 100, and the second fixing portion 230 is provided with a third positioning member 231 in a direction away from the battery assembly 100. The first positioning member 221 and the third positioning member 231 are both provided with a plurality of positioning members in the third direction. It can be understood that the first positioning member 221 and the third positioning member 231 can be integrally formed with the first plate body 210; or at least one of the first positioning member 221 and the third positioning member 231 is a component independent of the first plate body 210.

[0080] The third fixing part 320 is provided with a second positioning member 321 in a direction away from the battery assembly 100, and the fourth fixing part is provided with a fourth positioning member in a direction away from the battery assembly 100. The second positioning member 321 and the fourth positioning member are both provided with a plurality of members in the third direction. It can be understood that the second positioning member 321 and the fourth positioning member can be integrally formed with the second plate body 310; or at least one of the second positioning member 321 and the fourth positioning member is a component independent of the second plate body 310.

[0081] In the second direction, the two ends of the first side plate 400 are respectively provided with a first positioning hole 413 and a second positioning hole 414, and the first positioning hole 413 and the second positioning hole 414 are both provided with a plurality of members in the third direction. In the second direction, the two ends of the second side plate 500 are respectively provided with a third positioning hole 512 and a fourth positioning hole, and the third positioning hole 512 and the fourth positioning hole are both provided with a plurality of members in the third direction.

[0082] A first positioning member 221 is sequentially inserted into the fifth positioning hole 702 and the first positioning hole 413, a second positioning member 321 is sequentially inserted into a sixth positioning hole 712 and a second positioning hole 414, a third positioning member 231 is sequentially inserted into a seventh positioning hole 722 and a third positioning hole 512, and a fourth positioning member is sequentially inserted into an eighth positioning hole 732 and a fourth positioning hole. By cooperating the first positioning member 221 with the fifth positioning hole 702 and the first positioning hole 413, and cooperating the second positioning member 321 with the sixth positioning hole 712 and the second positioning hole 414, the risk of the first side plate 400 being flipped relative to the first end plate 200 and the second end plate 300 can be further inhibited. Similarly, by cooperating the third positioning member 231 with the seventh positioning hole 722 and the third positioning hole 512, and cooperating the fourth positioning member with the eighth positioning hole 732 and the fourth positioning hole, the risk of the second side plate 500 being flipped relative to the first end plate 200 and the second end plate 300 can also be further inhibited.

[0083] In order to facilitate the reader to understand how to inhibit the risk of the first side plate 400 being flipped relative to the first end plate 200 and the second end plate 300 after the first positioning member 700 is inserted into the first side plate 400 and the first pressing plate 700, and the second positioning member 321 is inserted into the first side plate 400 and the second pressing plate 702, the following analyzes the force of the first side plate 400 after the first positioning member 700 is inserted into the first side plate 400 and the first pressing plate 700. It can be understood that the other end of the first side plate 400 and the second side plate are similar, and therefore, the other end of the first side plate 400 and the second side plate 500 are not analyzed in detail.

[0084] Specifically, the first side plate 400 is analyzed as follows: please refer toFigures 16-20 When the battery assembly 100 expands or is subjected to external force, the first side plate 400 is subjected to a pushing force F2 parallel to the first direction, a pushing force F1 parallel to the second direction, and a flipping force F3 driving the first side plate 400 to flip relative to the first end plate 200 and the second end plate 300. FC2 is the interaction force between the first end plate 200 and the first side plate 400 to counteract the pushing force F1 parallel to the second direction, FT2 is the interaction force between the first end plate 200 and the first side plate 400 to counteract the pushing force F2 parallel to the first direction, and N2 is the flipping torque between the first end plate 200 and the first side plate 400 to counteract the interaction in the third direction. The first side plate 400 is attached to the first fixed portion 220, and the first side plate 400 is connected to the first end plate 200 by three first screw members 904. The first end plate 200 and the first side plate 400 jointly generate FC2 and FT2 through the three first screw members 904, and the first positioning portion 221 is inserted into the first side plate 400 and the first pressing plate 700, respectively, to generate FC3 parallel to the second direction. FC2, FC3, and FT2 combine to counteract F1 and F2. The first side plate 400 is attached to the first end plate 200 and the second end plate 300, respectively, to generate N2, thereby counteracting F3. Further, the displacement of the first side plate 400 relative to the first end plate 200 is reduced, thereby improving the ability of the shell to resist deformation.

[0085] It can be understood that the first pressing plate 700, the second pressing plate 710, the third pressing plate 720, and the fourth pressing plate 730 can also not be provided.

[0086] In some embodiments, please refer again to Figure 13, the battery module 1 further comprises a first insulation sheet 800, a second insulation sheet 810, a third insulation sheet 820, a fourth insulation sheet 830 and a fifth insulation sheet 840. Along the second direction, one end of the first insulation sheet 800 is provided with a fifth through hole 801 and a ninth positioning hole 802, and the other end of the first insulation sheet 800 is provided with a sixth through hole 803 and a tenth positioning hole 804. Along the second direction, one end of the second insulation sheet 810 is provided with a seventh through hole 811 and a tenth positioning hole 812, and the other end of the second insulation sheet 810 is provided with an eighth through hole and a twelfth positioning hole 813. The fifth through hole 801, the sixth through hole 803, the seventh through hole 811 and the eighth through hole are all spaced apart by three along the third direction, and the ninth positioning hole 802, the tenth positioning hole 804, the tenth positioning hole 812 and the twelfth positioning hole 813 are all spaced apart by multiple along the third direction. The first insulation sheet 800 is arranged between the fifth fixed part 420 and the sixth fixed part, and the first insulation sheet 800 of the first insulation sheet 800 is arranged between the first side plate 400 and the battery assembly 100. The second insulation sheet 810 is arranged between the seventh fixed part 520 and the eighth fixed part, and the second insulation sheet 810 is arranged between the second side plate 500 and the battery assembly 100. A fifth through hole 801 accommodates a first threaded part 904, a sixth through hole 803 accommodates a second threaded part 905, a seventh through hole 811 accommodates a third threaded part 906, and an eighth through hole accommodates a fourth threaded part 907. A ninth positioning hole 802 accommodates a first positioning part 221, a tenth positioning hole 804 accommodates a second positioning part 321, a tenth positioning hole 812 accommodates a third positioning part 231, and a twelfth positioning hole 813 accommodates a fourth positioning part. The third insulation sheet 820 is arranged between the first end plate 200 and the battery assembly 100, the fourth insulation sheet 830 is arranged between the second end plate 300 and the battery assembly 100, and the fifth insulation sheet 840 is arranged at the top of the integrated busbar assembly 600.

[0087] In the embodiment of the utility model, the shell includes first end plate 200, second end plate 300, first side plate 400 and second side plate 500, second side plate 500 and first side plate 400 are oppositely arranged along the first direction, first end plate 200 and second end plate 300 are oppositely arranged along the second direction, first end plate 200 includes first fixed part 220 and second fixed part 230, second end plate 300 includes third fixed part 320 and fourth fixed part, along the first direction, one end of first side plate 400 at least partially overlaps and is fixed with first fixed part 220, the other end of first side plate 400 at least partially overlaps and is fixed with third fixed part 320, along the first direction, one end of second side plate 500 at least partially overlaps and is fixed with second fixed part 230, the other end of second side plate 500 at least partially overlaps and is fixed with fourth fixed part, and after first side plate 400 is fixedly overlapped with first fixed part 220 and third fixed part 320 respectively, not only can the risk of moving along the second direction of first side plate 400 relative to first end plate 200 be reduced, but also the risk of overturning of first side plate 400 relative to first end plate 200 is reduced, similarly, after second side plate 500 is fixedly overlapped with second fixed part 230 and fourth fixed part respectively, not only can the risk of moving along the second direction of second side plate 500 relative to second end plate 300 be reduced, but also the risk of overturning of second side plate 500 relative to second end plate 300 is reduced, thereby the firmness of the shell is improved, and the risk of deformation of the shell is reduced. In this way, first side plate 400 is fixedly connected with first end plate 200 and second end plate 300 respectively, and second side plate 500 is fixedly connected with first end plate 200 and second end plate 300 respectively, without setting stainless steel bandage, the assembly can be completed. In this way, not only the cost is reduced, but also the assembly of the shell is facilitated.

[0088] The utility model provides the embodiment of battery module, and the battery module includes the shell, and the structure and function of shell can refer to the above embodiment, and here will not be repeated.

[0089] The utility model provides the embodiment of electric equipment, and the electric equipment includes the shell, and the structure and function of shell can refer to the above embodiment, and here will not be repeated.

[0090] It should be noted that the description and drawings of the utility model give the preferred embodiments of the utility model, however, the utility model can be realized through many different forms, and is not limited to the embodiments described in the description, the embodiments are not as additional limitation to the content of the utility model, the purpose of providing the embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Furthermore, the above technical features continue to combine, form various embodiments not listed above, which are considered as the range of the description of the utility model; further, for those skilled in the art, the above description can be improved or transformed, and all these improvements and transformations should belong to the protection scope of the utility model claims.

Claims

1. A housing characterized by, The shell comprises: a first end plate comprising a first plate body, a first fixing portion and a second fixing portion, the first fixing portion and the second fixing portion being oppositely arranged on the first plate body along a first direction; a second end plate comprising a second plate body, a third fixing portion and a fourth fixing portion, the third fixing portion and the fourth fixing portion being oppositely arranged on the second plate body along the first direction, the first plate body and the second plate body being oppositely arranged along a second direction, the first fixing portion and the second fixing portion being located on a side of the first plate body away from the second plate body, and the third fixing portion and the fourth fixing portion being located on a side of the second plate body away from the first plate body; a first side plate; a second side plate, the second side plate and the first side plate being oppositely arranged along the first direction; wherein one end of the first side plate at least partially overlaps with the first fixing portion, the other end of the first side plate at least partially overlaps with the third fixing portion, and one end of the first side plate is fixed with the first fixing portion, and the other end of the first side plate is fixed with the third fixing portion; one end of the second side plate at least partially overlaps with the second fixing portion, the other end of the second side plate at least partially overlaps with the fourth fixing portion, and one end of the second side plate is fixed with the third fixing portion, and the other end of the second side plate is fixed with the fourth fixing portion, the first direction being perpendicular to the second direction.

2. The shell according to claim 1, wherein one end of the first side plate is provided with a first through hole, and the other end of the first side plate is provided with a second through hole; the first fixing portion is provided with a first screw hole, and the third fixing portion is provided with a second screw hole; the shell further comprises a first screwing piece and a second screwing piece, the first screwing piece is screwed to the first screw hole after passing through the first through hole, and the second screwing piece is screwed to the second screw hole after passing through the second through hole.

3. The shell according to claim 2, wherein the shell further comprises a first pressing plate and a second pressing plate; the first pressing plate is provided with a first through hole, and the second pressing plate is provided with a second through hole; along the second direction, the two ends of the first side plate are respectively attached with the first pressing plate and the second pressing plate; the first screwing piece is screwed to the first screw hole after passing through the first through hole and the first through hole in sequence, and the second screwing piece is screwed to the second screw hole after passing through the second through hole and the second through hole in sequence.

4. The shell according to claim 3, wherein the number of the first through hole, the first through hole, the first screwing piece and the first screw hole is multiple, a plurality of the first screw holes are spaced apart on the first fixing portion along a third direction, and a first screwing piece is screwed to a first screw hole after passing through a first through hole and a first through hole in sequence; the number of the second through hole, the second through hole, the second screwing piece and the second screw hole is multiple, a plurality of the second screw holes are spaced apart on the third fixing portion along the third direction, and a second screwing piece is screwed to a second screw hole after passing through a second through hole and a second through hole in sequence; The first direction, the second direction and the third direction are perpendicular to each other.

5. The shell of claim 1, wherein, The first fixed part is provided with a first positioning member, and the third fixed part is provided with a second positioning member; One end of the first side plate is provided with a first positioning hole, and the other end of the first side plate is provided with a second positioning hole, the first positioning member is inserted into the first positioning hole, and the second positioning member is inserted into the second positioning hole.

6. The shell of claim 1, wherein, The first end plate further comprises a first mounting part and a second mounting part, and the first mounting part and the second mounting part are oppositely arranged on the side of the first plate body away from the second plate body along a third direction; The first mounting part comprises a first main body segment and two first bending segments, the first main body segment is arranged along the first direction, and the two first bending segments are arranged at the two ends of the first main body segment respectively, one of the first bending segments is fixedly connected to the first fixed part, and the other first bending segment is fixedly connected to the second fixed part; The second mounting part comprises a second main body segment and two second bending segments, the second main body segment is arranged along the first direction, and the two second bending segments are arranged at the two ends of the second main body segment respectively, one of the second bending segments is fixedly connected to the first fixed part, and the other second bending segment is fixedly connected to the second fixed part.

7. The shell of claim 6, wherein, The shell further comprises a plurality of first pull rivets and a plurality of third pull rivets, one of the first bending segments and one of the second bending segments are fixedly connected to the first fixed part through one of the first pull rivets, and the other first bending segment and the other second bending segment are fixedly connected to the second fixed part through one of the third pull rivets.

8. The shell of any one of claims 1-7, wherein, One end of the second side plate is provided with a third through hole, and the other end of the second side plate is provided with a fourth through hole; The second fixed part is provided with a third screw hole, and the fourth fixed part is provided with a fourth screw hole; The shell further comprises a third screw member and a fourth screw member, the third screw member is screwed to the third screw hole after passing through the third through hole, and the fourth screw member is screwed to the fourth screw hole after passing through the fourth through hole.

9. A battery module, characterized by The shell comprises a battery assembly and the shell of any one of claims 1-8; The battery assembly is accommodated in the shell, along the second direction, the first plate body and the second plate body of the shell are arranged on the two sides of the battery assembly respectively, along the first direction, the first side plate and the second side plate of the shell are arranged on the two sides of the battery module respectively, and the first direction and the second direction are perpendicular.

10. An electric device, characterized by The shell comprises the shell of any one of claims 1-8.

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