CN219303830U

CN219303830U - Battery box and battery

Info

Publication number: CN219303830U
Application number: CN202223386265.9U
Authority: CN
Inventors: 张可欣; 王勒言; 薛从文; 张硕
Original assignee: Linkdata New Energy Co Ltd
Current assignee: Linkdata New Energy Co Ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-07-04
Anticipated expiration: 2032-12-16

Abstract

The application provides a battery box and battery, the battery box includes bottom plate, curb plate and bonding piece, and the curb plate is around setting up along the circumference of bottom plate, is formed with first concave part on arbitrary one of bottom plate and curb plate, is formed with the first convex part of first concave part complex on another one, and first concave part and first convex part are around setting up along the circumference of bottom plate, are formed with first glue groove between first concave part and the first convex part, and first glue groove extends along the circumference of bottom plate; the bonding piece is filled in the first glue groove, and the side plate is bonded with the bottom plate through the bonding piece in the first glue groove, so that the fixed connection of the side plate and the bottom plate can be realized without welding, the use of welding flux and welding equipment in the assembly process of the box body structure is saved, and the cost is saved.

Description

Battery box and battery

Technical Field

The application belongs to the technical field of batteries, and particularly relates to a battery box and a battery.

Background

The battery refers to a power supply device with a battery core arranged inside, and the structure of the power supply device generally comprises the battery core, a battery box body and a battery box cover, wherein the battery core is arranged in an accommodating space formed by the battery box body and the battery box cover in a surrounding mode.

The current battery box body is generally welded to achieve the fixed connection between the components, for example, the connection between the bottom plate and the side plate of the battery box body, or the connection between the side plates of the battery box body is achieved through welding.

However, since soldering is performed by means of a soldering apparatus and a large amount of solder, the soldering apparatus and the solder have high costs, which results in high production costs of the battery case.

Disclosure of Invention

The embodiment of the application provides a battery box and a battery, which can reduce the production cost of the battery box.

In one aspect, an embodiment of the present application provides a battery box, including a bottom plate, a side plate and a bonding part, wherein the side plate is arranged around the bottom plate along the circumferential direction, a first concave part is formed on any one of the bottom plate and the side plate, a first convex part matched with the first concave part is formed on the other one of the bottom plate and the side plate, the first concave part and the first convex part are arranged around the bottom plate along the circumferential direction, a first glue groove is formed between the first concave part and the first convex part, and the first glue groove extends along the circumferential direction of the bottom plate; the bonding piece is filled in the first glue groove, and the side plate is bonded with the bottom plate through the bonding piece in the first glue groove.

In some embodiments, the bottom board includes a first sub-board and a second sub-board, a second concave part is formed on one side of the first sub-board, a second convex part matched with the second concave part is formed on one side of the second sub-board, a second glue groove is formed between the second concave part and the second convex part, the second glue groove extends along the extending direction of the second convex part, the bonding piece is further filled in the second glue groove, and the second sub-board is bonded with the first sub-board through the bonding piece in the second glue groove.

In some embodiments, the second glue grooves are located on the surface of the second protruding portion, the number of the second glue grooves is multiple, and the multiple second glue grooves are arranged on the surface of the second protruding portion at intervals.

In some embodiments, the first glue grooves are located on the surface of the first protruding portion, the number of the first glue grooves is multiple, and the multiple first glue grooves are arranged on the surface of the first protruding portion at intervals.

In some embodiments, the first recess is formed on the bottom panel and the first protrusion is formed on the side panel.

In some embodiments, the side plate includes a plurality of fifth sub-boards and a plurality of sixth sub-boards, the fifth sub-boards and the sixth sub-boards are arranged in a staggered manner along the circumferential direction of the bottom plate, a first convex part is formed on one side, close to the bottom plate, of each of the fifth sub-boards and the sixth sub-boards, a third concave part is formed at two ends of each of the fifth sub-boards, the first convex part of each of the sixth sub-boards is clamped in the third concave part of each of the fifth sub-boards, and each of the sixth sub-boards is bonded with each of the fifth sub-boards through a bonding part in the first adhesive groove of each of the first convex parts.

In some embodiments, the battery box further comprises a connector, and the fifth sub-board and the sixth sub-board are fixedly connected by the connector.

In some embodiments, the bottom plate includes a third sub-plate and a fourth sub-plate that are disposed at intervals along a first direction, and a plurality of connection spacers that are disposed between the third sub-plate and the fourth sub-plate, the plurality of connection spacers being disposed at intervals along a second direction, and a heat exchange flow channel being formed between two adjacent connection spacers, the first direction being perpendicular to the second direction.

In some embodiments, the bottom plate further includes two sealing plates fixedly disposed between the third sub-plate and the fourth sub-plate, the two sealing plates are disposed on two sides of the connecting partition plate along the third direction, the sealing plates extend along the second direction and cover each heat exchange flow channel, and the second direction is disposed intersecting the third direction.

On the other hand, the embodiment of the application also provides a battery, which comprises the battery box and the battery cell arranged in the battery box.

The utility model provides a battery box and battery, the battery box sets up along the circumference of bottom plate, the curb plate is formed with first concave part on the arbitrary one of bottom plate and curb plate along the setting of the circumference of bottom plate, be formed with on the other with first concave part complex first convex part, be formed with first glue groove between first concave part and the first convex part, first glue groove extends along the circumference of bottom plate, the bonding piece is filled in first glue groove, the curb plate bonds with the bottom plate through the bonding piece in the first glue groove, therefore need not to realize the fixed connection of curb plate and bottom plate through the welding, the welding flux in the box structure assembly process and welding equipment's use have been saved, the cost is saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.

Fig. 1 is a schematic structural view of a bottom plate of a battery box provided in some embodiments of the present application;

fig. 2 is a schematic structural view of a side plate of a battery box according to some embodiments of the present application;

FIG. 3 is an assembly view of a bottom panel and side panels of a battery compartment provided in some embodiments of the present application;

FIG. 4 is another schematic structural view of a bottom plate of a battery box provided in some embodiments of the present application;

FIG. 5 is an exploded view of a side panel provided in some embodiments of the present application;

fig. 6 is an exploded view of a bottom plate of a battery box provided in some embodiments of the present application.

Description of the reference numerals:

a base plate 100; a side plate 200; a first concave portion 101; a first convex portion 201; a first glue groove 202; a first sub-board 102; a second sub-board 103; a second recess 104; a second convex portion 105; a second glue groove 106; a third sub-board 107; a fourth sub-board 108; a connection spacer 109; a heat exchange flow passage 110; a fifth sub-board 203; a sixth daughter board 204; a third recess 205; plug 206.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to explain the present application and are not configured to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

In order to solve the problems in the prior art, embodiments of the present application provide a battery box and a battery. The battery box provided in the embodiment of the present application will be described first.

Fig. 1 is a schematic structural view of a bottom plate of a battery box according to some embodiments of the present application, fig. 2 is a schematic structural view of a side plate of the battery box according to some embodiments of the present application, and fig. 3 is an assembly diagram of the bottom plate and the side plate of the battery box according to some embodiments of the present application.

As shown in fig. 1, 2 and 3, in one aspect, the embodiment of the present application provides a battery box, including a bottom plate 100, a side plate 200 and an adhesive member, the side plate 200 is disposed around the bottom plate 100 along the circumferential direction, a first concave portion 101 is formed on any one of the bottom plate 100 and the side plate 200, a first convex portion 201 matching with the first concave portion 101 is formed on the other, the first concave portion 101 and the first convex portion 121 are disposed around the bottom plate 100 along the circumferential direction, a first adhesive groove 202 is formed between the first concave portion 101 and the first convex portion 201, and the first adhesive groove 202 extends along the circumferential direction of the bottom plate 100; the adhesive member is filled in the first adhesive groove 202, and the side plate 200 is adhered to the bottom plate 100 by the adhesive member in the first adhesive groove 202.

The shape of the bottom plate 100 may be various, for example, the bottom plate 100 may be any shape such as square, round or triangle, the bottom plate 100 may be a regular shape, and the specific shape of the bottom plate 100 may be determined according to the shape of the battery box in actual use; the first concave portion 101 may be provided on the bottom plate 100, in which case the first convex portion 201 is provided on the side plate 200, or the first concave portion 101 may be provided on the side plate 200, in which case the first convex portion 201 is provided on the bottom plate 100; the first concave part 101 and the first convex part 201 are matched with each other, that is, the first convex part 201 can be matched and clamped in the first concave part 101, the shapes of the first concave part 101 and the first convex part 201 are complementary, for example, when the first concave part 101 is a semicircular groove, the section of the first convex part 201 is semicircular, and when the first concave part 101 is a square groove, the section of the first convex part 201 is also square, so that the connection strength of the first convex part 201 when clamped in the first concave part 101 can be ensured; the first glue groove 202 is formed on the surface of the first protrusion 201, thereby realizing the fixed connection of the side plate 200 and the bottom plate 100.

The first glue groove 202 may be located on the surface of the first protrusion 201 or may be located on the wall surface of the first recess 101; the first glue groove 202 extends along the circumferential direction of the base plate 100, and the cross-sectional shape of the first glue groove 202 may be various shapes such as a circle, a semicircle, a triangle, or a square, which is not particularly limited herein.

The adhesive member may be various adhesive materials, and may be various common structural adhesives, such as high-performance silicone or neutral transparent silicone, or may be other synthetic adhesives, such as epoxy, polyurethane, or acrylic, and it is understood that the adhesive may be liquid or solid, which is not particularly limited herein.

The application provides a battery box and battery, the battery box includes bottom plate 100, curb plate 200 and bonding piece, curb plate 200 is along the circumference of bottom plate 100 around setting, be formed with first concave part 101 on any one of bottom plate 100 and curb plate 200, be formed with on the other one with first concave part 101 complex first convex part 201, first concave part 101 and first convex part 121 are along the circumference of bottom plate 100 around setting, be formed with first glue groove 202 between first concave part 101 and the first convex part 201, first glue groove 202 extends along the circumference of bottom plate 100, the bonding piece is filled in first glue groove 202, curb plate 200 bonds with bottom plate 100 through the bonding piece in the first glue groove 202, consequently need not to realize the fixed connection of curb plate 200 and bottom plate 100 through the welding, the use of solder and welding equipment in the box structure assembly process has been saved, the cost is saved.

It can be understood that in the prior art, the fixing connection of the battery box is realized through a welding technology, the welding flux needs to be accurately controlled to be at a correct welding position, and when the welding flux is at an improper position, welding seams can occur on the welded battery box, so that the sealing of the battery box is not facilitated; moreover, as the positions of the battery box are required to be welded, the time spent for welding is longer, and the production efficiency of the battery box is reduced to a certain extent; therefore, in this application, the first concave portion 101 is formed on any one of the bottom plate 100 and the side plate 200, the first convex portion 201 matching with the first concave portion 101 is formed on the other one, the first concave portion 101 and the first convex portion 121 are circumferentially arranged along the bottom plate 100, the first glue groove 202 is formed between the first concave portion 101 and the first convex portion 201, the first glue groove 202 extends along the circumferential direction of the bottom plate 100, and the bonding piece is filled in the first glue groove 202, so that the bonding between the side plate 200 and the bottom plate 100 is realized through the bonding piece in the first glue groove 202, in this process, the occurrence of a sealing failure point similar to a welding line can be avoided, the sealing effect of the battery box is improved, meanwhile, the fixed connection between the side plate 200 and the bottom plate 100 is realized through the bonding piece, only the bonding piece is required to be filled in the first glue groove 202, and the fixed connection between the side plate 200 and the bottom plate 100 can be realized after the bonding piece is automatically fixed, and no complicated operation steps are required, thus the assembly steps of the battery box can be simplified to a certain extent, the difficulty of assembling the battery box can be reduced, the time required by an operator to assemble the battery box can be shortened, and the production efficiency of the battery box can be improved.

It can be appreciated that one or several glue injection ports communicated with the first glue groove 202 may be formed on the side plate 200, and glue is injected into the first glue groove 202 through the glue injection ports.

Further, the first glue groove 202 may have a depth of about 1mm and a width of about 7mm to 10mm, so as to better fix the side plate 200 and the bottom plate 100.

Further, after the assembly of the side plate 200 and the bottom plate 100 is completed, a certain adhesive member may be filled into the gap between the side plate 200 and the bottom plate 100 to further improve the sealing performance of the battery case.

Fig. 4 is another schematic structural view of a bottom plate of a battery box according to some embodiments of the present application.

As shown in fig. 4, in some embodiments, the chassis 100 includes a first sub-board 102 and a second sub-board 103, a second concave portion 104 is formed on one side of the first sub-board 102, a second convex portion 105 that mates with the second concave portion 104 is formed on one side of the second sub-board 103, a second glue groove 106 is formed between the second concave portion 104 and the second convex portion 105, the second glue groove 106 extends along an extending direction of the second convex portion 105, the adhesive member is further filled in the second glue groove 106, and the second sub-board 103 is adhered to the first sub-board 102 by the adhesive member in the second glue groove 106.

Since the base plate 100 is required to be manufactured by a mold, when the size of the base plate 100 is large, the required mold is also large, and at this time, the production cost of the base plate 100 is high, and therefore, the base plate 100 is formed by splicing the first sub-board 102 and the second sub-board 103, and the first sub-board 102 and the second sub-board 103 can be manufactured by using a small mold, so that the production cost of the base plate 100 can be reduced to some extent.

The second concave portion 104 and the second convex portion 105 are engaged with each other, at this time, the second convex portion 105 is engaged with and clamped in the second concave portion 104, that is, the shapes of the second concave portion 104 and the second convex portion 105 are complementary, for example, when the second concave portion 104 is a semicircular groove, the cross section of the second convex portion 105 is semicircular, and when the second concave portion 104 is a square groove, the cross section of the second convex portion 105 is square; the second glue groove 106 may be provided on the wall surface of the second concave portion 104, or may be formed on the surface of the second convex portion 105; the second glue groove 106 extends along the extending direction of the second protruding portion 105, preferably, two ends of the second glue groove 106 are flush with two ends of the second protruding portion 105, so that an adhesive area between the first sub-board 102 and the second sub-board 103 is increased, and connection strength of the first sub-board 102 and the second sub-board 103 is improved.

In this embodiment, the bottom board 100 includes the first sub-board 102 and the second sub-board 103, the second concave portion 104 is formed on one side of the first sub-board 102, the second convex portion 105 matching with the second concave portion 104 is formed on one side of the second sub-board 103, so that the second convex portion 105 is clamped in the second concave portion 104 to achieve the splicing of the bottom board 100, and since the second glue groove 106 is formed between the second concave portion 104 and the second convex portion 105, the second glue groove 106 extends along the extending direction of the second convex portion 105, and the adhesive piece is filled in the second glue groove 106, so that the adhesive piece in the second glue groove 106 is improved to achieve the fixed connection between the second sub-board 103 and the first sub-board 102, at this time, the first sub-board 102 and the second sub-board 103 can be formed by processing only with a smaller mold while the fixed connection effect of the first sub-board 102 and the second sub-board 103 is ensured, so that the processing cost of the bottom board 100 can be reduced to a certain extent, and the production cost of the whole battery box can be shortened.

Further, after the first and

second sub-boards

102 and 103 are assembled, the adhesive may be filled into the gap between the first and

second sub-boards

102 and 103 to further secure the sealing performance of the battery case.

In some embodiments, the second glue grooves 106 are located on the surface of the second protruding portion 105, the number of the second glue grooves 106 is plural, and the plurality of second glue grooves 106 are disposed on the surface of the second protruding portion 105 at intervals.

It can be appreciated that, since the second protrusion 105 protrudes outward, the second glue groove 106 is processed on the surface of the second protrusion 105, which is less difficult to process than the second glue groove 106 is processed on the wall surface of the second recess 104.

When the cross section of the second protrusion 105 is square, the second protrusion 105 has at least three surfaces, and at this time, the plurality of second glue grooves 106 may be disposed on the three surfaces, for example, the number of the second glue grooves 106 may be three, and the three second glue grooves 106 may be disposed on the three surfaces of the second protrusion 105, respectively.

In the present embodiment, the second glue groove 106 is processed on the surface of the second protrusion 105, so that the processing difficulty of the second glue groove 106 can be reduced compared with the processing of the second glue groove 106 on the wall surface of the second recess 104; because a plurality of second glue grooves 106 are arranged on the surface of the second convex part 105 at intervals, the second daughter board 103 is fixedly connected with the first daughter board 102 through the bonding pieces positioned in the plurality of second glue grooves 106 of the second convex part 105, the adhesive area between the second daughter board 103 and the first daughter board 102 is increased, the connection strength of the first daughter board 102 and the second daughter board 103 is ensured, and the structural strength of the base plate 100 formed by splicing the first daughter board 102 and the second daughter board 103 is further ensured.

In some embodiments, the first glue grooves 202 are located on the surface of the first protruding portion 201, the number of the first glue grooves 202 is plural, and the plural first glue grooves 202 are disposed on the surface of the first protruding portion 201 at intervals.

It can be appreciated that, since the first protrusion 201 protrudes outward, the processing difficulty is less in processing the first glue groove 202 on the surface of the first protrusion 201 than in processing the first glue groove 202 on the wall surface of the first recess 101.

When the cross section of the first protruding portion 201 is square, the first protruding portion 201 has three surfaces, at this time, the plurality of first glue grooves 202 may be disposed on the three surfaces, for example, when the number of the first glue grooves 202 is three, the three first glue grooves 202 may be disposed on the three surfaces, and when the number of the first glue grooves 202 is six, two first glue grooves 202 may be disposed at intervals on each surface, and of course, the number of the first glue grooves 202 on each surface may be inconsistent, which is not limited herein.

In the present embodiment, the processing difficulty of the first glue groove 202 can be reduced compared to processing the first glue groove 202 on the wall surface of the first concave portion 101 by processing the first glue groove 202 on the surface of the first convex portion 201; since the plurality of first adhesive grooves 202 are arranged on the surface of the first convex part 201 at intervals, the adhesive area between the side plate 200 and the bottom plate 100 can be increased, the connection strength between the side plate 200 and the bottom plate 100 is ensured, and the assembly strength of the battery box is further ensured.

In some embodiments, the first recess 101 is formed on the bottom plate 100 and the first protrusion 201 is formed on the side plate 200.

It will be appreciated that, since the thickness of the side plate 200 is thinner than that of the bottom plate 100, the first recess 101 is provided on the bottom plate 100, and the structural strength of the battery case can be secured to some extent with respect to the side plate 200.

Fig. 5 is an exploded view of a side panel provided in some embodiments of the present application.

As shown in fig. 5, in some embodiments, the side board 200 includes a plurality of fifth sub-boards 203 and a plurality of sixth sub-boards 204, the fifth sub-boards 203 and the sixth sub-boards 204 are arranged in a staggered manner along the circumferential direction of the bottom board 100, a first protrusion 201 is formed on one side of the fifth sub-boards 203 and the sixth sub-boards 204 close to the bottom board 100, a third recess 205 is formed on two ends of the fifth sub-boards 203, the first protrusion 201 of the sixth sub-boards 204 is clamped in the third recess 205 of the fifth sub-boards 203, and the sixth sub-boards 204 are bonded to the fifth sub-boards 203 by bonding pieces in the first adhesive grooves 202 of the first protrusions 201.

The fifth sub-board 203 and the sixth sub-board 204 are arranged in a staggered manner along the circumferential direction of the bottom board 100, that is, one fifth sub-board 203 is connected with the sixth sub-board 204 along both sides of the circumferential direction of the bottom board 100; the first convex part 201 is formed on one side of the fifth sub-board 203 and the sixth sub-board 204 close to the bottom board 100, and is clamped in the first concave part 101 of the bottom board 100; the third concave 205 is formed at two ends of the fifth sub-board 203, and the first convex 201 of the sixth sub-board 204 is clamped in the third concave 205 of the fifth sub-board 203, that is, the first convex 201 on the sixth sub-board 204 extends along two ends of the periphery Xiang Chaoxiang of the bottom board 100 and is clamped in the third concave 205 of the fifth sub-board 203, or the sixth sub-board 204 extends along two ends of the periphery Xiang Chaoxiang of the bottom board 100, so that the first convex 201 of the sixth sub-board 204 can be clamped in the third concave 205 of the fifth sub-board 203; it can be understood that the first glue groove 202 on the first protrusion 201 of the sixth sub-board 204 also extends into the third recess 205 along with the first protrusion 201, at this time, the adhesive in the first glue groove 202 through which the sixth sub-board 204 passes is fixedly connected with the fifth sub-board 203, preferably, two ends of the first glue groove 202 on the first protrusion 201 of the sixth sub-board 204 extend to an outer wall surface of one side of the fifth sub-board 203 away from the bottom board 100, at this time, two ends of the first glue groove 202 of the sixth sub-board 204 may be exposed to the outside of the battery box, so that glue may be injected into the first glue groove 202 through two ends of the first glue groove 202 of the sixth sub-board 204 without an additional glue injection opening.

In this embodiment, the side board 200 includes a plurality of fifth sub-boards 203 and a plurality of sixth sub-boards 204, so that the manufacturing difficulty of the side board 200 can be reduced, and when the side board 200 is manufactured, only the fifth sub-boards 203 and the sixth sub-boards 204 need to be manufactured separately through smaller molds, so that the mold cost for manufacturing the side board 200 can be saved, and meanwhile, the fixing connection of the fifth sub-boards 203 and the sixth sub-boards 204 can be realized through the adhesive pieces in the first adhesive grooves 202 on the first protruding portions 201 of the sixth sub-boards 204, compared with the welding mode, so that the cost can be saved to a certain extent.

It can be understood that in the process of assembling the side board 200, the assembly of the fifth sub-board 203 and the bottom board 100 may be achieved first, specifically, the first protrusion 201 of the fifth sub-board 203 is inserted into the first recess 101 of the bottom board 100, and the adhesive is injected into the first glue groove 202 on the first protrusion 201 of the fifth sub-board 203, and after the adhesive is cured, the fixed connection between the fifth sub-board 203 and the bottom board 100 is achieved; subsequently, the first protrusion 201 of the sixth sub-board 204 is inserted into the first recess 101 of the bottom board 100, and at the same time, the first protrusion 201 of the sixth sub-board 204 is ensured to be inserted into the third recess 205 of the fifth sub-board 203 at both sides, and then the adhesive is injected into the first adhesive groove 202 on the first protrusion 201 of the sixth sub-board 204, and after the adhesive is cured, the assembly of the sixth sub-board 204 is realized.

It will be appreciated that some degree of flash or lack of glue may occur during the injection of the glue, at which point the spilled glue may be smoothed or the glue may be applied where the glue is not in place.

The fifth sub-board 203 and the sixth sub-board 204 enclose the bottom board 100 to form a containing cavity for containing a battery, the first protruding portion 201 of the sixth sub-board 204 may extend to an outer wall surface of a side of the fifth sub-board 203 facing away from the containing cavity along two ends of the periphery Xiang Chaoxiang of the bottom board 100, or the sixth sub-board 204 may extend to an outer wall surface of a side of the fifth sub-board 203 facing away from the containing cavity along two ends of the periphery Xiang Chaoxiang of the bottom board 100, at this time, the first protruding portion 201 of the sixth sub-board 204 is clamped in the third recessed portion 205, and an end surface of the first protruding portion 201 of the sixth sub-board 204 is flush with the outer wall surface of the side of the fifth sub-board 203 facing away from the containing cavity.

Further, the automatic glue injection machine may be used for injecting glue, or the manual glue injection may be used, for example, a manual glue gun may be used for injecting glue, which is not particularly limited herein.

Further, a certain thickness of adhesive may be applied to the gap between the sixth and fifth sub-boards 204 and 203 to secure the sealing of the battery case.

Referring again to fig. 2, in some embodiments, the battery box further includes a connector 206, and the fifth sub-board 203 and the sixth sub-board 204 are fixedly connected by the connector 206.

The plug 206 may be a pin, a bolt, a rivet, a stud, or the like, which is not particularly limited herein; the fifth and

sixth sub-boards

203, 204 are fixedly connected by means of the plug 206, i.e. the plug 206 is inserted into the fifth sub-board 203 through the sixth sub-board 204, so that a further fixation of the fifth and

sixth sub-boards

203, 204 can be achieved by means of the plug 206.

Further, a groove may be formed at a position of the fifth daughter board 203 corresponding to the end portion of the plug connector 206, so that the plug connector 206 is inserted into the fifth daughter board 203, meanwhile, a bonding member may be injected into the groove after the plug connector 206 is inserted, so that a gap between the plug connector 206 and the fifth daughter board 203 and a gap between the plug connector 206 and the sixth daughter board 204 may be avoided from affecting the tightness of the battery box, thereby ensuring the tightness of the battery box, and the plug connector 206 may be prevented from accidentally falling off by the bonding member injected into the groove, and the fixing effect of the plug connector 206 to the fifth daughter board 203 and the sixth daughter board 204 is ensured.

In other embodiments, the side board 200 includes a plurality of seventh sub-boards circumferentially disposed along the bottom board 100, each of the seventh sub-boards has a first protrusion 201 formed on a side near the bottom board 100, a fourth recess formed on one end of the seventh sub-board, the first protrusion 201 of one seventh sub-board is snapped into the fourth recess of an adjacent seventh sub-board, and the seventh sub-board is adhered to the adjacent seventh sub-board by an adhesive in the first adhesive groove 202 of the first protrusion 201.

The seventh sub-boards are circumferentially arranged along the circumferential direction of the bottom plate 100, and the first convex parts 201 are positioned on one side of the seventh sub-boards close to the bottom plate 100 and are clamped in the first concave parts 101 of the bottom plate 100; a fourth recess is formed at one end of each seventh sub-board, and the first protrusion 201 of one seventh sub-board is snapped into the fourth recess of an adjacent seventh sub-board, that is, the first protrusion 201 of one seventh sub-board extends along one end of the periphery Xiang Chaoxiang of the bottom board 100 and is snapped into the fourth recess of an adjacent seventh sub-board, or the entire seventh sub-board extends along one end of the periphery Xiang Chaoxiang of the bottom board 100, so that the first protrusion 201 of the seventh sub-board may be snapped into the fourth recess of an adjacent seventh sub-board; it can be understood that the first glue groove 202 on the first protrusion 201 of the seventh sub-board also extends into the corresponding fourth groove along with the first protrusion 201, at this time, the seventh sub-board is fixedly connected with the adjacent seventh sub-board through the adhesive piece in the first glue groove 202 on the first protrusion 201, preferably, one end of the first glue groove 202 on the first protrusion 201 of the seventh sub-board extends to the outer wall surface of the side of the adjacent seventh sub-board away from the bottom board 100, at this time, one end of the first glue groove 202 of the seventh sub-board may be exposed to the outside of the battery box, so that glue may be injected into the first glue groove 202 of the corresponding seventh sub-board through the end without an additional glue injection port.

In this embodiment, the side board 200 includes a plurality of seventh sub-boards circumferentially disposed along the circumferential direction of the bottom board 100, so that the difficulty in manufacturing the side board 200 can be reduced, and when manufacturing the side board 200, only a smaller mold is needed to manufacture the seventh sub-board, so that the mold cost in manufacturing the side board 200 can be saved, and meanwhile, the fixed connection between two adjacent seventh sub-boards is realized by the adhesive piece in the first adhesive groove 202 on the first protrusion 201 of the seventh sub-board, compared with the welding method, the cost can be reduced to a certain extent.

It can be understood that in this embodiment, the fixing connection between the seventh sub-board and the bottom board 100 may be sequentially achieved, which is specifically implemented by firstly clamping the first protrusion 201 of one seventh sub-board in the first recess 101 of the bottom board 100, injecting the adhesive into the first glue groove 202 on the first protrusion 201 of the seventh sub-board, clamping the first protrusion 201 of the second seventh sub-board in the first recess 101 of the bottom board 100 after the adhesive is cured, simultaneously clamping the first protrusion 201 of the second seventh sub-board in the fourth recess of the first seventh sub-board, injecting the adhesive into the first glue groove 202 of the second seventh sub-board, and after the curing, achieving the assembly between the second seventh sub-board and the first seventh sub-board and the bottom board 100, and so on until all the seventh sub-boards are assembled.

As shown in fig. 6, in some embodiments, the bottom plate 100 includes a third sub-plate 107 and a fourth sub-plate 108 disposed at intervals along a first direction, and a plurality of connection spacers 109 disposed between the third sub-plate 107 and the fourth sub-plate 108, the plurality of connection spacers 109 being arranged at intervals along a second direction, and a heat exchange flow passage 110 being formed between two adjacent connection spacers 109, the first direction being perpendicular to the second direction.

The first direction refers to the thickness direction of the bottom plate 100, or the first direction is an extension direction in which the side plate 200 extends toward an end of the side plate 200 remote from the bottom plate 100 at an end connected to the bottom plate 100, and the second direction is a width direction or a length direction of the bottom plate 100; the chassis base 100 includes a third sub-board 107 and a fourth sub-board 108 disposed at intervals from each other in the first direction, and a plurality of connection spacers 109 disposed between the third sub-board 107 and the fourth sub-board 108, that is, the third sub-board 107 and the fourth sub-board 108 are connected to each other by the connection spacers 109; the plurality of connection spacers 109 are arranged at intervals along the second direction, and at this time, between the third sub-board 107 and the fourth sub-board 108, two adjacent connection spacers 109 enclose to form a heat exchange flow channel 110, so that heat exchange can be performed on the battery in the battery box by arranging a heat exchange medium in the heat exchange flow channel 110.

In this embodiment, the heat exchange flow channel 110 is formed in the bottom plate 100, that is, the bottom plate 100 of the battery box and the heat exchange plate of the battery are integrally arranged, so that a replacement hot plate is not required to be arranged in the battery box again, the cost can be saved to a certain extent, and the space for placing the replacement hot plate in the battery box can be used for placing other structures, so that the space utilization rate in the battery box can be improved to a certain extent, or the space for placing the replacement hot plate can be directly omitted, so that the volume of the battery box is reduced, and the production cost of the battery box is saved.

It will be appreciated that the distance between the two connection spacers 109 located on the extreme sides may be smaller than the dimensions of the third and fourth sub-boards 107 and 108 in the second direction, in which case the first recess 101 may be formed between the third and fourth sub-boards 107 and 108 and the connection spacers 109 located on the extreme sides; the size of the connection spacer 109 may be smaller than the sizes of the third and fourth sub-boards 107 and 108 in the extending direction of the connection spacer 109, that is, the end of the connection spacer 109 may have a certain distance from the end of the third and fourth sub-boards 107 and 108 in the extending direction of the connection spacer 109, and at this time, the first recess 101 may be formed between the end of the connection spacer 109 and the third and fourth sub-boards 107 and 108; it will be appreciated that, since the heat exchange flow channels 110 are formed between the adjacent connection spacers 109, in this case, in order to avoid the heat exchange medium in the heat exchange flow channels 110 from interfering with the adhesive in the first adhesive groove 202, the first adhesive groove 202 may be disposed on other surfaces of the first protrusion 201 than the surface disposed opposite to the end of the connection spacer 109, for example, when the first protrusion 201 has three surfaces, one of which is disposed opposite to the end of the connection spacer 109, and in this case, the first adhesive groove 202 may be disposed on the other two surfaces, thereby avoiding the contact of the adhesive with the heat exchange medium.

In some embodiments, the bottom plate 100 further includes two sealing plates fixedly disposed between the third sub-plate 107 and the fourth sub-plate 108, where the two sealing plates are disposed on two sides of the connecting partition 109 along the third direction, and the sealing plates extend along the second direction and cover each heat exchange flow channel 110, and the second direction is disposed intersecting the third direction.

The third direction, i.e., the extending direction of the connection spacer 109; the two sealing plates are respectively disposed on two sides of the connecting partition 109 along the third direction, and extend along the second direction and cover each heat exchange flow channel 110, so that the heat exchange medium in the heat exchange flow channel 110 can be prevented from flowing out, and at this time, the first glue groove 202 on the surface of the first protrusion 201 may be disposed on the surface of the first protrusion 201 opposite to the end of the connecting partition 109.

In this embodiment, by providing sealing plates at both ends of the connection spacer 109 in the third direction, respectively, the sealing plates extend in the second direction and cover each of the heat exchange channels 110, thereby sealing the heat exchange channels 110 by the sealing plates, and preventing the heat exchange medium located in the heat exchange channels 110 from flowing out.

Further, two sealing plates are respectively disposed at both ends of the connection partition 109 in the third direction, and at this time, the sealing plates and the ends of the connection partition 109 may have a predetermined distance, so that the heat exchange channels 110 may be mutually communicated.

The battery box and the battery provided by the application, the battery box comprises a bottom plate 100, a side plate 200 and a bonding piece, the bottom plate 100 is circumferentially and circumferentially arranged along the bottom plate 100, the side plate 200 is circumferentially and circumferentially arranged along the bottom plate 100, one side of the side plate 200, which is close to the bottom plate 100, is formed with a first convex part 201 matched with the first concave part 101, a first adhesive groove 202 is formed in the surface of the first convex part 201, the first adhesive groove 202 extends along the circumference of the bottom plate 100, the bonding piece is filled in the first adhesive groove 202, the side plate 200 is bonded with the bottom plate 100 through the bonding piece in the first adhesive groove 202, so that the fixed connection of the side plate 200 and the bottom plate 100 can be realized without welding, the use of welding flux and welding equipment in the assembly process of a box structure is saved, the cost is saved, meanwhile, the sealing failure point similar to a welding line can be avoided, the sealing effect of the battery box is ensured, the assembly of the battery box is realized through the bonding piece, the bonding piece is only injected into the adhesive groove, the battery box is automatically fixed, the operation step is not needed after the bonding piece is automatically fixed, the battery box is assembled, the assembly step of the battery box can be simplified to a certain extent, the assembly efficiency of the battery box is reduced, the required production time is shortened, and the operation time is shortened.

In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, which are intended to be included in the scope of the present application.

Claims

1. A battery box, comprising:

a bottom plate;

a side plate which is arranged around the circumference of the bottom plate, wherein a first concave part is formed on any one of the bottom plate and the side plate, a first convex part matched with the first concave part is formed on the other side plate, the first concave part and the first convex part are arranged around the circumference of the bottom plate, a first glue groove is formed between the first concave part and the first convex part, and the first glue groove extends along the circumference of the bottom plate;

and the bonding piece is filled in the first glue groove, and the side plate is bonded with the bottom plate through the bonding piece in the first glue groove.

2. The battery box according to claim 1, wherein the bottom plate includes a first sub-plate and a second sub-plate, a second concave portion is formed on one side of the first sub-plate, a second convex portion that mates with the second concave portion is formed on one side of the second sub-plate, a second glue groove is formed between the second concave portion and the second convex portion, the second glue groove extends along an extending direction of the second convex portion, the bonding member is further filled in the second glue groove, and the second sub-plate is bonded with the first sub-plate through the bonding member in the second glue groove.

3. The battery box according to claim 2, wherein the second adhesive grooves are located on the surface of the second protruding portion, the number of the second adhesive grooves is plural, and the plural second adhesive grooves are disposed on the surface of the second protruding portion at intervals.

4. The battery box according to claim 1, wherein the first glue grooves are located on the surface of the first protruding portion, the number of the first glue grooves is plural, and the plural first glue grooves are arranged on the surface of the first protruding portion at intervals.

5. The battery box of claim 1, wherein the first recess is formed on the bottom plate and the first protrusion is formed on the side plate.

6. The battery box according to claim 5, wherein the side plate comprises a plurality of fifth sub-plates and a plurality of sixth sub-plates, the fifth sub-plates and the sixth sub-plates are arranged in a staggered manner along the circumferential direction of the bottom plate, the first protruding portions are formed on one sides of the fifth sub-plates and the sixth sub-plates, which are close to the bottom plate, and third recessed portions are formed on two ends of the fifth sub-plates, the first protruding portions of the sixth sub-plates are clamped in the third recessed portions of the fifth sub-plates, and the sixth sub-plates are bonded with the fifth sub-plates through the bonding pieces in the first adhesive grooves of the first protruding portions.

7. The battery box of claim 6, further comprising a plug, wherein the fifth sub-board and the sixth sub-board are fixedly connected by the plug.

8. The battery box according to claim 1, wherein the bottom plate comprises a third sub-plate, a fourth sub-plate and a plurality of connecting partition plates, wherein the third sub-plate and the fourth sub-plate are arranged at intervals along a first direction, the connecting partition plates are arranged at intervals along a second direction, a heat exchange flow channel is formed between two adjacent connecting partition plates, and the first direction is perpendicular to the second direction.

9. The battery box of claim 8, wherein the bottom plate further comprises two sealing plates fixedly arranged between the third sub-plate and the fourth sub-plate, the two sealing plates are respectively arranged on two sides of the connecting partition plate along a third direction, the sealing plates extend along the second direction and cover each heat exchange flow channel, and the second direction is intersected with the third direction.

10. A battery comprising the battery case according to any one of claims 1 to 9 and an electric core provided in the battery case.