CN217182332U

CN217182332U - Battery pack

Info

Publication number: CN217182332U
Application number: CN202221073272.0U
Authority: CN
Inventors: 王帅锋; 杨绪龙; 蒋昕玮
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-08-12
Anticipated expiration: 2032-05-06

Abstract

The utility model relates to a battery technology field provides a battery pack, including battery box and battery, the battery sets up in the battery box, and the battery box includes the main frame, and the main frame includes first portion and second portion, superpose about first portion and the second portion, and first portion and second portion detachably are connected, and the battery is connected with the first portion, or the battery is connected with the second portion. The main frame is designed into the first part and the second part which are detachably connected, and the battery is connected to the first part or the second part, so that the battery can be installed and detached along with the first part or the second part, the battery is convenient to assemble and disassemble, and the service performance of the battery pack is improved.

Description

Battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a battery package.

Background

In the related art, the battery pack may include a plurality of batteries, and the batteries may be disposed in the battery box body, and due to structural limitations of the battery box body, the installation or removal of the battery box body is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery pack to improve the performance of battery pack.

The utility model provides a battery pack, including battery box and battery, the battery sets up in the battery box, and the battery box includes the main frame, and the main frame includes first portion and second portion, superpose about first portion and the second portion, and first portion and second portion detachably are connected, and the battery is connected with the first portion, or the battery is connected with the second portion.

The utility model discloses the battery package includes battery box and battery, and the battery sets up in the battery box, through the first portion and the second portion that are connected for detachably with main frame design, and the battery is connected in first portion or second portion to can make the battery along with the installation and the pulling down of first portion or second portion, make things convenient for the equipment and the dismantlement of battery with this, thereby improve the performance of battery package.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

fig. 1 is a schematic structural view showing a battery pack according to a first exemplary embodiment;

fig. 2 is a schematic structural view showing a battery pack according to a second exemplary embodiment;

fig. 3 is a schematic structural view showing a battery pack according to a third exemplary embodiment;

fig. 4 is a schematic structural view showing a battery pack according to a fourth exemplary embodiment;

fig. 5 is a schematic structural view showing a battery pack according to a fifth exemplary embodiment;

fig. 6 is a schematic structural view showing a battery pack according to a sixth exemplary embodiment;

fig. 7 is a schematic structural view showing a battery pack according to a seventh exemplary embodiment;

fig. 8 is a schematic structural view showing a battery pack according to an eighth exemplary embodiment;

fig. 9 is a schematic structural view showing a battery pack according to a ninth exemplary embodiment;

fig. 10 is a partial structural schematic view showing a battery pack according to the first exemplary embodiment;

fig. 11 is a schematic view showing a partial internal structure of a battery pack according to the first exemplary embodiment;

fig. 12 is a partial structural schematic view showing a battery pack according to a second exemplary embodiment;

fig. 13 is a partial structural schematic view of a battery pack according to a third exemplary embodiment;

FIG. 14 is a schematic flow chart diagram illustrating a method of assembling a battery pack, according to an exemplary embodiment;

fig. 15 is a schematic flow chart illustrating a method of disassembling a battery pack according to an exemplary embodiment.

The reference numerals are explained below:

10. a battery case; 11. a base plate; 12. a main frame; 121. a first portion; 1211. a first component section; 1212. a second section; 122. a second portion; 1221. a third segment; 1222. a fourth segment; 123. an accommodating space; 1231. a sub-accommodation space; 124. a support portion; 125. a frame; 126. a partition beam; 13. a top cover; 131. a heat-insulating layer; 20. a battery; 21. a pressure relief structure; 22. a pole assembly; 30. a heat conducting portion; 40. a temperature adjusting plate; 50. and (4) heat-conducting structural adhesive.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

An embodiment of the present invention provides a battery pack, please refer to fig. 1 to 13, the battery pack includes a battery box 10 and a battery 20, the battery 20 is disposed in the battery box 10, the battery box 10 includes a main frame 12, the main frame 12 includes a first portion 121 and a second portion 122, the first portion 121 and the second portion 122 are stacked up and down, the first portion 121 and the second portion 122 are detachably connected, the battery 20 is connected to the first portion 121, or the battery 20 is connected to the second portion 122.

The utility model discloses a battery package of an embodiment includes battery box 10 and battery 20, and battery 20 sets up in battery box 10, through first part 121 and the second part 122 that is connected for detachably with main frame 12 design, and battery 20 connects in first part 121 or second part 122 to can make battery 20 along with the installation and the dismantlement of first part 121 or second part 122, with this equipment and the dismantlement of battery 20 of convenience, thereby improve the performance of battery package.

In one embodiment, the first portion 121 and the second portion 122 are stacked one on top of the other, and the first portion 121 is positioned on top of the second portion 122, so that the first portion 121 and the second portion 122 can be easily assembled and disassembled one on top of the other.

In one embodiment, the first portion 121 and the second portion 122 are stacked on top of each other, and the first portion 121 may be disposed on the second portion 122, in which case the top of the first portion 121 may be flush with the top of the second portion 122, or the top of the first portion 121 may be higher than the top of the second portion 122, for example, the first portion 121 may be located on the top of the second portion 122, or the top of the first portion 121 may be lower than the top of the second portion 122.

In one embodiment, the battery case 10 further includes: the bottom plate 11, the main frame 12 and the bottom plate 11 are connected to form an accommodating space 123, the battery 20 is disposed in the accommodating space 123, and the bottom plate 11 and the main frame 12 are connected to a side close to the second portion 122, so that the bottom plate 11 can protect the battery 20. The battery pack in this embodiment may not include the top cover 13.

In one embodiment, as shown in fig. 1 to 10, the battery case 10 further includes: a top cover 13, the top cover 13 being connected to an end of the main frame 12 away from the bottom plate 11 to seal the accommodating space 123; wherein the top cover 13 is connected to the other side of the main frame 12 near the first portion 121, so that the top cover 13 and the bottom plate 11 can reliably seal the accommodating space 123, thereby achieving effective protection of the battery 20.

It should be noted that the main frame 12 may include a first opening and a second opening, and the top cover 13 and the bottom plate 11 respectively close the first opening and the second opening, so as to seal the accommodating space 123, and as the first portion 121 and the second portion 122 of the main frame 12 are detachably connected, when assembling the battery 20, the battery 20 may be connected to the first portion 121 or the second portion 122 first, and then the first portion 121 and the second portion 122 are connected, at this time, not only is the installation of the battery 20 facilitated, but also the damage to the battery 20 caused by the main frame 12 may be avoided, after all, during the process of connecting the battery 20 to the first portion 121 or the second portion 122, the space is left to be large, so as to improve the assembling efficiency of the battery 20, and thus improve the assembling efficiency of the battery pack.

When the battery 20 is disassembled, the battery 20 can be disassembled along with the first part 121 or the second part 122, and then the battery 20 is disassembled from the first part 121 or the second part 122, so that the disassembly of the battery 20 is convenient.

The battery 20 includes a cell and an electrolyte, and is a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged.

In certain embodiments, it is not excluded that the top cover 13 does not seal the receiving space 123, in which case the receiving space 123 may be in gaseous communication with the external environment, for example, a battery pack may be used for the energy storage device.

In one embodiment, the top cover 13 is removably connected to the main frame 12 to facilitate removal of the battery housing 10, thereby facilitating subsequent maintenance and replacement of the battery 20. The top cover 13 and the main frame 12 may be snapped together, or the top cover 13 and the main frame 12 may be connected by fasteners, for example, the top cover 13 and the main frame 12 may be connected by bolts.

In one embodiment, the base plate 11 is detachably connected to the main frame 12, so that the battery case 10 can be easily disassembled, thereby facilitating the subsequent maintenance and replacement of the battery 20. The base plate 11 and the main frame 12 may be clamped, or the base plate 11 and the main frame 12 may be connected by a fastener, for example, the base plate 11 and the main frame 12 may be connected by a bolt.

In one embodiment, the top cover 13 is connected to the first section 121 and the bottom plate 11 is connected to the second section 122.

In one embodiment, the top cover 13 is removably coupled to the first portion 121 to facilitate removal of the battery housing 10, thereby facilitating subsequent maintenance and replacement of the battery 20. The top cover 13 and the first portion 121 may be snap fit or the top cover 13 and the first portion 121 may be connected by fasteners, for example, the top cover 13 and the first portion 121 may be bolted together.

In one embodiment, the top cover 13 and the first portion 121 can be fixedly connected, and the top cover 13 and the first portion 121 can be removed together when the battery case 10 is removed.

In one embodiment, the base plate 11 is removably coupled to the second portion 122 to facilitate removal of the battery housing 10, thereby facilitating subsequent maintenance and replacement of the battery 20. The base plate 11 and the second portion 122 may be snapped together, or the base plate 11 and the second portion 122 may be connected by fasteners, for example, the base plate 11 and the second portion 122 may be bolted together.

In one embodiment, the bottom plate 11 and the second portion 122 can be fixedly connected, and the bottom plate 11 and the second portion 122 can be removed together when the battery case 10 is removed.

In one embodiment, the first portion 121 and the second portion 122 may be snap-fit, for example, the first portion 121 and the second portion 122 are connected by a protrusion and groove structure. The first portion 121 and the second portion 122 may be connected by other means, for example, the first portion 121 and the second portion 122 may be conveniently connected by a connecting piece, one end of which may be connected to the first portion 121 by a bolt, and the other end of which may be connected to the second portion 122 by a bolt. The connection manner of the first portion 121 and the second portion 122 is not limited herein, as long as the first portion 121 and the second portion 122 can be stably connected and the first portion 121 and the second portion 122 can be conveniently detached.

In one embodiment, the battery 20 is fixedly connected to the first portion 121, so that the battery 20 can be removed from the first portion 121 simultaneously, thereby improving the removal efficiency of the battery 20.

When the battery 20 is assembled, the battery 20 may be mounted on the first portion 121, and then the first portion 121 and the second portion 122 are connected.

In one embodiment, the battery 20 is fixedly connected to the second portion 122, so that the battery 20 and the second portion 122 can be removed simultaneously, thereby improving the removal efficiency of the battery 20.

When the battery 20 is assembled, the battery 20 may be mounted on the second portion 122 first, and then the first portion 121 and the second portion 122 are connected.

In one embodiment, as shown in fig. 2 and 8, the battery 20 is bonded to the first portion 121, which not only facilitates connection between the battery 20 and the first portion 121, but also ensures connection stability between the battery 20 and the first portion 121, thereby avoiding problems such as shaking of the battery 20, and improving safety performance of the battery 20. The battery 20 and the first portion 121 may be bonded by the heat conductive adhesive 50, which not only ensures the connection strength, but also realizes heat transfer, thereby improving the heat dissipation capability of the battery 20.

In some embodiments, it is not excluded that the battery 20 and the first portion 121 may be connected by a snap fit or the like.

In one embodiment, as shown in fig. 3 and 7, the battery 20 is bonded to the second portion 122, which not only facilitates the connection between the battery 20 and the second portion 122, but also ensures the connection stability between the battery 20 and the second portion 122, thereby avoiding the problems of shaking and the like of the battery 20, and thus improving the safety performance of the battery 20. The battery 20 and the second portion 122 can be bonded by the heat-conducting structural adhesive 50, which not only can ensure the connection strength, but also can realize heat transfer, thereby improving the heat dissipation capability of the battery 20.

In some embodiments, it is not excluded that the battery 20 and the second portion 122 may be connected by a snap fit or the like.

In one embodiment, as shown in fig. 1 to 6 and 9, the main frame 12 further includes a supporting portion 124, and the battery 20 contacts the supporting portion 124, so that the supporting portion 124 is used for limiting the position of the battery 20, thereby improving the stability of the battery 20, avoiding the problems of shaking and the like of the battery 20, and improving the safety performance of the battery 20.

In one embodiment, as shown in fig. 1 to 4, the supporting portion 124 extends from the second portion 122, and at least a portion of the battery 20 is located between the supporting portion 124 and the top cover 13, so that the battery 20 is fixed between the supporting portion 124 and the top cover 13, thereby improving the connection strength between the battery 20 and the battery box 10 and preventing the battery 20 from shaking.

In one embodiment, as shown in fig. 5, the supporting portions 124 are arranged in pairs, one supporting portion 124 extends from the first portion 121, the other supporting portion 124 extends from the second portion 122, and at least a part of the battery 20 is located between the two supporting portions 124 in the pair, so that the battery 20 can be fixed between the two supporting portions 124, thereby improving the connection strength between the battery 20 and the battery box 10 and preventing the battery 20 from shaking.

In one embodiment, as shown in fig. 6, the supporting portion 124 extends from the first portion 121, and the battery 20 is located between the supporting portion 124 and the bottom plate 11, so that the battery 20 is fixed between the supporting portion 124 and the bottom plate 11, thereby improving the connection strength between the battery 20 and the battery box 10 and preventing the battery 20 from shaking.

In one embodiment, the top cover 13 includes a heat exchange channel, and the top cover 13 contacts the battery 20, so that the top cover 13 can be used to heat or cool the battery 20, and the heat exchange channel may be a fluid heat exchange channel or a gas heat exchange channel, so as to cool or heat the battery 20 inside the battery box 10.

The top cover 13 comprises a heat exchange channel, namely the heat exchange channel can be integrated on the top cover 13, and further, a heat exchange structure can be regarded as the top cover 13 of the battery box body 10, so that the battery 20 can be heated or cooled, at the moment, the further addition of the heat exchange structure for heating or cooling the battery 20 can be omitted, and the weight of the battery pack can be reduced.

The top cover 13 and the battery 20 can be in direct contact, that is, the top cover 13 is attached to the battery 20, and at this time, the heat exchange channel can be used for realizing rapid heating or cooling of the battery 20.

In one embodiment, the top cover 13 and the battery 20 may be in indirect contact, as shown in fig. 1 to 3, the battery pack further includes a heat conduction portion 30, and the heat conduction portion 30 is located between the top cover 13 and the battery 20, so that the top cover 13 is in contact with the battery 20 through the heat conduction portion 30, and thus heat transfer between the top cover 13 and the battery 20 may be achieved through the heat conduction portion 30.

The heat conductive part 30 may be a heat conductive material in the related art, for example, the heat conductive part 30 may include a graphene sheet, a heat conductive silicone grease, and the like, which is not limited herein.

In one embodiment, the heat conducting portion 30 between the top cover 13 and the battery 20 may be a heat conducting glue, which not only realizes heat transfer between the top cover 13 and the battery 20, but also realizes reliable connection between the top cover 13 and the battery 20, thereby improving stability of the battery 20. The heat conducting part 30 can be heat conducting structural adhesive, the top cover 13 and the battery 20 are bonded through the heat conducting structural adhesive, the connection strength can be guaranteed, and heat transfer can be achieved through the heat conducting structural adhesive, so that the heat dissipation capacity of the battery 20 is improved.

In one embodiment, the top cover 13 is fixedly connected with the battery 20, so that the top cover 13 can fix the battery 20, and the top cover 13 can be used for heating or radiating heat of the battery 20. The top cover 13 may be fixedly connected to the battery 20 by a heat conductive structural adhesive. Alternatively, the top cover 13 may be fixedly connected to the battery 20 by a snap-fit structure.

In one embodiment, as shown in fig. 1 to 3, a heat insulating layer 131 is disposed on a side of the top cover 13 away from the battery 20, so as to ensure that the internal temperature of the battery box 10 is maintained at a certain height, and avoid affecting the service performance of the battery pack when the ambient temperature is too low, and when the ambient temperature is higher, because the top cover 13 has a heat exchange channel, the battery 20 can be reliably cooled. The heat preservation layer 131 can be heat preservation cotton, can not only play the heat preservation effect, but also have certain supporting role. The insulating layer 131 may be a coating layer, for example, an insulating material is directly coated or sprayed on the top cover 13 to form the insulating layer 131, which not only can achieve the insulating effect, but also can save space. The specific material of the insulating layer 131 is not limited, and can be selected according to actual requirements.

In one embodiment, as shown in fig. 4 to 6, the battery pack further includes a temperature regulation plate 40, the temperature regulation plate 40 being located between the top cover 13 and the battery 20, the temperature regulation plate 40 being in contact with the battery 20, thereby achieving rapid heating or cooling of the battery 20.

The temperature adjustment plate 40 may be a heat exchange structure in the related art, for example, the temperature adjustment plate 40 may be a liquid cooling plate.

The temperature-adjusting plate 40 may be in direct contact with the battery 20, that is, the temperature-adjusting plate 40 is attached to the battery 20, and at this time, the temperature-adjusting plate 40 can be used to achieve rapid heating or cooling of the battery 20.

In one embodiment, the temperature-adjusting plate 40 and the battery 20 may be indirectly in contact, as shown in fig. 4 to 6, and the battery pack further includes a heat conduction part 30, the heat conduction part 30 being located between the temperature-adjusting plate 40 and the battery 20 such that the temperature-adjusting plate 40 is in contact with the battery 20 through the heat conduction part 30, so that heat transfer between the temperature-adjusting plate 40 and the battery 20 may be achieved through the heat conduction part 30.

In one embodiment, the heat-conducting portion 30 between the temperature adjustment plate 40 and the battery 20 may be a heat-conducting glue, which not only enables heat transfer between the temperature adjustment plate 40 and the battery 20, but also enables reliable connection between the temperature adjustment plate 40 and the battery 20, thereby improving stability of the battery 20. The heat conducting part 30 can be heat conducting structural adhesive, and the temperature adjusting plate 40 is bonded with the battery 20 through the heat conducting structural adhesive, so that the connection strength can be ensured, and the heat conducting structural adhesive can realize heat transfer, thereby improving the heat dissipation capacity of the battery 20.

In one embodiment, the temperature adjusting plate 40 and the top cover 13 may be spaced apart from each other, and a heat insulation structure may be disposed between the temperature adjusting plate 40 and the top cover 13, for example, heat insulation cotton may be disposed between the temperature adjusting plate 40 and the top cover 13, and the heat insulation cotton may play a role in heat insulation and support. The temperature adjusting plate 40 and the top cover 13 can also be in direct contact, so that the space utilization rate of the battery case 10 is improved.

In one embodiment, the temperature adjustment plate 40 is fixedly connected to the battery 20, so that the temperature adjustment plate 40 can fix the battery 20, and the temperature adjustment plate 40 can be used for heating or heat dissipation of the battery 20. The temperature adjustment plate 40 may be fixedly connected to the battery 20 by a heat conductive structural adhesive. Alternatively, the temperature adjustment plate 40 may be fixedly connected to the battery 20 by a snap structure.

In one embodiment, as shown in fig. 1-6, battery 20 includes a pressure relief structure 21, pressure relief structure 21 being disposed toward base plate 11; wherein, pressure relief structure 21 and bottom plate 11 interval set up to can guarantee when battery 20 internal pressure reaches a definite value, pressure relief structure 21 can be broken through, thereby make gaseous can be by the inside discharge of battery 20, thereby avoid causing the safety problem.

It should be noted that the pressure relief structure 21 of the battery 20 may be a pressure relief structure in the related art, such as a rupture membrane, a rupture valve, etc., and is not limited herein.

In one embodiment, as shown in fig. 1-6, the battery 20 further includes a pole assembly 22, the pole assembly 22 being located on the same side of the battery 20 as the pressure relief structure 21; wherein, utmost point post subassembly 22 sets up with bottom plate 11 interval to this guarantees to have safe distance between utmost point post subassembly 22 and the bottom plate 11, avoids bottom plate 11 to damage utmost point post subassembly 22.

The main frame 12 may include two opposite openings, and the top cover 13 may cover a first opening of the main frame 12, which may face a passenger compartment of the vehicle. The second mouth of main frame 12 can be sheltered from to bottom plate 11, and battery 20's pressure relief structure 21 and utmost point post subassembly 22 all towards bottom plate 11, thereby can avoid directly towards first opening blowout by pressure relief structure 21 combustion gas, can avoid battery 20 to take place thermal runaway and cause the safety problem to a certain extent, and because pressure relief structure 21 and utmost point post subassembly 22 towards bottom plate 11, thereby can be when guaranteeing to have certain clearance between battery and the bottom plate 11, can make pressure relief structure 21 and utmost point post subassembly 22 rational utilization this clearance again, with this space utilization who improves battery box 10.

At present, in order to improve the energy density of the battery, a cathode material with a high nickel content is generally selected, and a ternary material, such as a nickel-cobalt-manganese material, in which the nickel content accounts for more than 60 wt%, is generally called a high nickel material. When energy density obtains promoting, the battery thermal runaway's that uses the nickelic material heat can be up to more than 1000 ℃, be greater than the melting point of the general material of present top cap 13, for example aluminium, the steel, therefore it is passenger cabin that top cap 13 direct influence is worn in thermal runaway gas fusion, cause very big potential safety hazard, through setting up pressure relief structure 21 and utmost point post subassembly 22 towards bottom plate 11, influence to passenger cabin when can having avoided thermal runaway to a great extent, protect passenger's safety. Usually, utmost point post subassembly 22 is connected with the busbar in order to realize the electric connection between the battery 20, nevertheless in order to guarantee the security performance of battery package, can leave certain electric clearance between battery box 10 and the busbar usually, all set up to orientation bottom plate 11 through with pressure relief structure 21 and utmost point post subassembly 22 to can be when guaranteeing to have certain clearance between battery and the bottom plate 11, can make pressure relief structure 21 and this clearance of this rational utilization of utmost point post subassembly 22 again, with this space utilization who improves battery box 10. It should be noted that the top cover 13 can block the first opening of the main frame 12, and the pressure relief structure 21 and the pole assembly 22 of the battery 20 are both disposed toward the bottom plate 11, that is, when the battery 20 is out of thermal runaway, the pressure relief structure 21 is damaged, so that the gas inside the battery 20 is sprayed out, at this time, the sprayed gas can be directly sprayed toward the bottom plate 11, and when the gas flows to the top cover 13, the heat and the pressure are both reduced to a certain extent, at this time, the damage of the gas to the top cover 13 will be reduced, and the first opening of the main frame 12 is disposed toward the passenger compartment of the vehicle, at this time, the gas sprayed out by the pressure relief structure 21 can be prevented from being directly sprayed toward the passenger compartment, so as to improve the safety performance of the vehicle.

The bottom plate 11 of battery package will be through the ball hitting standard, and at this moment, can leave the clearance between battery 20 and the bottom plate 11, guarantee anticollision and buffering, when utmost point post subassembly 22 was towards bottom plate 11, just can utilize this clearance to satisfy the safety clearance between utmost point post subassembly 22 and the battery box 10 to rational utilization battery box 10 space has improved battery box 10's space utilization.

As shown in fig. 1-4, the pressure relief structure 21 and the pole assembly 22 can be disposed toward the base plate 11, and the top cover 13 and the support portion 124 on the second portion 122 can secure the battery 20.

As shown in fig. 5, the pressure relief structure 21 and the pole assembly 22 may be disposed toward the bottom plate 11, and the support portion 124 of the first portion 121 and the support portion 124 of the second portion 122 may fix the battery 20.

As shown in fig. 6, the pressure relief structure 21 and the pole assembly 22 may be disposed toward the bottom plate 11, the battery 20 may be disposed between the support portion 124 of the first portion 121 and the bottom plate 11, and a support structure (not shown) may be disposed between the battery 20 and the bottom plate 11, and the support structure is configured to ensure that a gap is formed between the pressure relief structure 21 and the pole assembly 22 and the bottom plate 11. The support structure may be selected according to actual needs, for example, the support structure may be a glue layer, the support structure may be a positioning bracket, and the like.

In one embodiment, as shown in fig. 7 to 9, the battery 20 includes a pressure relief structure 21 and a pole assembly 22, the pressure relief structure 21 and the pole assembly 22 may be both disposed toward the top cover 13, the bottom plate 11 may include a heat exchange channel, and the battery 20 and the bottom plate 11 may be in direct contact with each other, or the battery 20 and the bottom plate 11 may be in contact with each other through the heat conduction portion 30, which is not limited herein.

In one embodiment, as shown in fig. 10 and 11, the main frame 12 includes: a frame 125, the frame 125 being disposed around the base plate 11 to form an accommodating space 123; the partition beam 126, the partition beam 126 being positioned inside the frame 125 to partition the accommodating space 123 into at least two sub-accommodating spaces 1231, the partition beam 126 including the first portion 121 and the second portion 122, so that the partition beam 126 can be easily disassembled, thereby enabling the battery 20 to be quickly disassembled from the frame 125 through the partition beam 126.

The partition beam 126 may be coupled to the bezel 125 and the battery 20 may be coupled to at least one of the first portion 121 and the second portion 122 of the partition beam 126, the partition beam 126 being removably coupled to the bezel 125 so as to enable the at least one of the first portion 121 and the second portion 122 to be quickly removed from the bezel 125 with the battery 20.

The top cover 13 may be connected to the rim 125, the top cover 13 may be connected to the partition beam 126, the bottom plate 11 may be connected to the rim 125, and the bottom plate 11 may be connected to the partition beam 126.

In one embodiment, as shown in fig. 12 and 13, the main frame 12 includes a rim 125, the rim 125 is disposed around the bottom plate 11 to form the receiving space 123, and the rim 125 includes at least parts of the first portion 121 and the second portion 122, so that the first portion 121 and the second portion 122 can protect the battery 20 from the circumferential direction.

It should be noted that the frame 125 is not specifically referred to as being disposed around the bottom plate 11, and it is important to note that the frame 125 forms a circumferentially closed space. The frame 125 is connected to the base plate 11, and the frame 125 may be disposed on the base plate 11, or the frame 125 may be connected to a circumferential edge of the base plate 11, which is not limited herein. The bezel 125 may include an edge rail, the bezel 125 may include an inboard reinforcement, the reinforcement may be coupled to the edge rail, and the reinforcement may be a beam, e.g., a beam welded to the edge rail, or a beam integrally formed with the edge rail. The reinforcing member may also be a plate body that may be connected to the edge beam. The specific structure of the frame 125 is not limited, but it is mainly explained that the frame 125 can form a circumferentially closed space.

In one embodiment, the frame 125 may include all of the first portion 121 and the second portion 122, the frame 125 may form one accommodation space 123, the plurality of batteries 20 are disposed in the one accommodation space 123, and the plurality of batteries 20 may be connected in series or in parallel by a bus bar, for example, the pole assembly 22 of two adjacent batteries is connected by the bus bar. The battery 20 may include two pole assemblies 22, a positive pole assembly and a negative pole assembly.

In one embodiment, as shown in fig. 12 and 13, the main frame 12 further includes a partition beam 126, the partition beam 126 being located inside the rim 125 to partition the accommodating space 123 into at least two sub-accommodating spaces 1231; the batteries 20 are multiple, the multiple batteries 20 include a first battery and a second battery, and the first battery and the second battery are respectively disposed in the two sub-accommodation spaces 1231, so that the batteries 20 in the two adjacent sub-accommodation spaces 1231 can be prevented from being influenced by each other, and the safety performance of the battery pack can be improved.

The number of the partition beams 126 may be one or more, and is not limited herein and may be selected according to actual needs.

In one embodiment, the bezel 125 includes one portion of the first and

second portions

121 and 122, and the partition beam 126 includes the other portion of the first and

second portions

121 and 122, thereby integrally dividing the main frame 12 into the first and

second portions

121 and 122, and facilitating assembly and disassembly of the battery 20 through detachable connection of the first and

second portions

121 and 122.

In one embodiment, as shown in fig. 11 and 13, the first portion 121 includes a first body section 1211 and a second body section 1212, the first body section 1211 and the second body section 1212 are detachably connected, the first battery is fixed to the first body section 1211, and the second battery is fixed to the second body section 1212, so as to prevent the second battery from blocking the first battery from being removed from the battery housing 10 simultaneously with the first body section 1211 or preventing the first battery from blocking the second battery from being removed from the battery housing 10 simultaneously with the second body section 1212.

The battery 20 can be detached from the battery housing 10 with the first part 121 detached from the battery housing 10 by providing the first part 121 as a first component section 1211 and a second component section 1212 that are detachably connected, and the first component section 1211 and the second component section 1212 belong to the two sub-receiving spaces 1231, respectively, and the first battery and the second battery are provided in the two sub-receiving spaces 1231, respectively, so that when maintenance or replacement of the first battery or the second battery is required, the first battery and the first component section 1211 can be detached from the battery housing 10 simultaneously and independently without detaching the second battery. Alternatively, the second battery and the second section 1212 can be removed from the battery case 10 simultaneously without removing the first battery, thereby facilitating maintenance of the battery pack and reducing maintenance costs.

In one embodiment, as shown in fig. 11 and 13, the second portion 122 includes a third segment 1221 and a fourth segment 1222, the third segment 1221 and the fourth segment 1222 are detachably connected, the first battery is fixed to the third segment 1221, and the second battery is fixed to the fourth segment 1222, so as to prevent the second battery from blocking the first battery and the third segment 1221 from being removed from the battery box 10 simultaneously, or prevent the first battery from blocking the second battery and the fourth segment 1222 from being removed from the battery box 10 simultaneously.

The battery 20 can be detached from the battery case 10 along with the second portion 122, and by providing the second portion 122 with the detachably connected third and

fourth segment sections

1221 and 1222, and the third and

fourth segment sections

1221 and 1222 respectively belong to the two sub-accommodating spaces 1231, and the first and second batteries are respectively disposed in the two sub-accommodating spaces 1231, when maintenance or replacement of the first or second battery is required, the first and third segment sections 1221 can be detached from the battery case 10 simultaneously and separately without detaching the second battery. Alternatively, the second battery and the fourth segment 1222 may be separately removed from the battery case 10 simultaneously without removing the first battery, thereby facilitating maintenance of the battery pack and reducing maintenance costs.

It is noted that, as shown in connection with fig. 10 and 11, the partitioning beam 126 may include the first portion 121 and the second portion 122, and the first portion 121 may include the first and

second body segments

1211 and 1212, and the second portion 122 may include the third and

fourth body segments

1221 and 1222. As shown in connection with fig. 12, the bezel 125 and the partition beam 126 include a first portion 121 and a second portion 122, while the first portion 121 of the partition beam 126 may include a first segment 1211 and a second segment 1212, and the second portion 122 of the partition beam 126 may include a third segment 1221 and a fourth segment 1222. As shown in connection with fig. 13, the bezel 125 and the partition beam 126 include a first portion 121 and a second portion 122, while the bezel 125 and the first portion 121 of the partition beam 126 may include a first segment 1211 and a second segment 1212, and the bezel 125 and the second portion 122 of the partition beam 126 may include a third segment 1221 and a fourth segment 1222.

It should be noted that the two sub-receiving spaces 1231 may be respectively provided with a plurality of first batteries and a plurality of second batteries, and the first batteries and the second batteries may be identical batteries, or the first batteries and the second batteries may be non-identical batteries. The batteries in the two independent sub-accommodation spaces 1231 need to be separately detachable, so that the first part 121 or the second part 122 can be disassembled for the second time, thereby meeting the requirement of independent detachment.

An embodiment of the present invention further provides an assembly method of a battery pack, please refer to fig. 14, the assembly method of the battery pack includes: s101, fixing the battery 20 on the main frame 12, wherein the main frame 12 comprises a first part 121 and a second part 122 which are overlapped up and down, and the first part 121 and the second part 122 are detachably connected.

The utility model discloses a battery pack's assembly method of one embodiment is through fixing battery 20 in main frame 12, and main frame 12 designs for detachably connected first portion 121 and second portion 122 to can make things convenient for the equipment of battery box 10, with this equipment of making things convenient for battery 20, thereby improve battery pack's packaging efficiency.

It should be noted that the first portion 121 and the second portion 122 are stacked on top of each other, and it can be considered that the first portion 121 is located above the second portion 122 when the battery pack is used, further, the main frame 12 may include a first opening and a second opening, the first portion 121 and the second portion 122 respectively include the first opening and the second opening, and the top cover 13 and the bottom plate 11 respectively close the first opening and the second opening. Because the first part 121 and the second part 122 of the main frame 12 are detachably connected, when the battery 20 is assembled, the battery 20 can be connected to the first part 121 or the second part 122 first, and then the first part 121 and the second part 122 are connected, at this time, the installation of the battery 20 is facilitated, and the damage of the main frame 12 to the battery 20 can be avoided, after all, the avoiding space is large in the process of connecting the battery 20 to the first part 121 or the second part 122, so that the assembling efficiency of the battery 20 can be improved, and the assembling efficiency of the battery pack can be improved.

In one embodiment, securing the battery to the main frame 12 includes: after the battery 20 is connected to the first portion 121 or the second portion 122, the first portion 121 and the second portion 122 are connected, so that the battery 20 can be independently mounted on the first portion 121 or the second portion 122, a large space can be provided, the assembly efficiency of the battery 20 can be improved, and the battery 20 is not easily damaged.

The battery 20 may be connected to the first portion 121 first, and then the first portion 121 and the second portion 122 are connected. Alternatively, the battery 20 may be connected to the second portion 122 first, and then the first portion 121 and the second portion 122 are connected.

The battery 20 can be bonded to the first portion 121, and the battery 20 and the first portion 121 can be bonded by the heat conductive adhesive, so that not only can the connection strength be ensured, but also the heat transfer can be realized by the heat conductive adhesive, thereby improving the heat dissipation capability of the battery 20.

The battery 20 can be bonded to the second portion 122, and the battery 20 and the second portion 122 can be bonded by the heat-conducting structural adhesive, so that not only can the connection strength be ensured, but also the heat-conducting structural adhesive can realize heat transfer, thereby improving the heat dissipation capability of the battery 20.

In one embodiment, securing the battery to the main frame 12 includes: after the first and

second parts

121 and 122 are coupled, the battery 20 is coupled to at least one of the first and

second parts

121 and 122, so that the assembly efficiency of the battery pack can be improved and the coupling stability of the battery 20 can be ensured.

In one embodiment, the method for assembling a battery pack further comprises: connecting the main frame 12 and the bottom plate 11; the main frame 12 and the top cover 13 are connected to seal the receiving space 123 for placing the battery 20, so that effective protection of the battery 20 can be achieved.

The main frame 12 may include a first opening and a second opening, and the top cover 13 and the bottom plate 11 close the first opening and the second opening, respectively, thereby achieving sealing of the receiving space 123.

In one embodiment, after the battery 20 is fixed to the main frame 12 and the connection of the first portion 121 and the top cover 13 is completed, the main frame 12 and the top cover 13 are turned over such that the opening of the main frame 12 faces upward, and the base plate 11 is connected to the main frame 12 to shield the opening of the main frame 12.

When the top cover 13 is connected to the main frame 12, the first opening of the main frame 12 faces upward, and when the bottom plate 11 is connected, the second opening of the main frame 12 needs to face upward, so as to facilitate the connection of the bottom plate 11. In the process of turning over the main frame 12 and the top cover 13, since the battery 20 is fixed to the main frame 12, no positional change occurs.

In one embodiment, at least portions of the first portion 121 and the second portion 122 form a rim 125, the base plate 11 is connected to the second portion 122, and the top cover 13 is connected to the first portion 121, such that the base plate 11 and the top cover 13 can be sealed to the main frame 12.

A hermetic structure may be provided between the first portion 121 and the second portion 122, thereby ensuring a reliable seal between the first portion 121 and the second portion 122.

In one embodiment, the first portion 121 and the second portion 122 form a separation beam 126, and the base plate 11 and the top cover 13 are both attached to the rim 125, i.e., the separation beam 126 may be attached to the rim 125, and the separation beam 126 may facilitate sealing of the base plate 11 and the top cover 13 to the main frame 12 as the battery 20 is detached from the rim 125 along with the separation beam 126.

In one embodiment, the first portion 121 and the second portion 122 form a partition beam 126, and the bottom plate 11 and the top cover 13 are connected to the second portion 122 and the first portion 121, respectively, i.e. the partition beam 126 may be used to achieve the fixation of the bottom plate 11 and the top cover 13.

In one embodiment, the first portion 121 and the second portion 122 form a dividing beam 126, and after the battery 20 is attached to at least one of the first portion 121 and the second portion 122, the attached first portion 121 and second portion 122 are attached to the frame 125, such that the battery 20 is mounted in the frame 125, and when the battery 20 is disassembled, only at least a portion of the dividing beam 126 needs to be removed from the frame 125, thereby achieving the disassembly of the battery 20.

In one embodiment, the pressure relief structure 21 and the terminal post assembly 22 of the battery 20 are disposed toward the bottom plate 11, so that the pressure relief structure 21 and the bottom plate 11 are disposed at an interval, and it can be ensured that the pressure relief structure 21 can be broken when the internal pressure of the battery 20 reaches a certain value, so that gas can be discharged from the inside of the battery 20, thereby avoiding causing safety problems, and the terminal post assembly 22 and the bottom plate 11 are disposed at an interval, thereby ensuring that a safety distance exists between the terminal post assembly 22 and the bottom plate 11, and avoiding the bottom plate 11 from damaging the terminal post assembly 22.

In one embodiment, the pressure relief structure 21 and the pole assembly 22 of the battery 20 are disposed toward the bottom plate 11, the second portion 122 is disposed with the supporting portion 124, the side of the battery 20 disposed with the pressure relief structure 21 and the pole assembly 22 is placed on the supporting portion 124 of the main frame 12, and the battery 20 and the supporting portion 124 are fixed, and then the top cover 13 is connected to the first portion 121, and the main frame 12 and the top cover 13 may be turned over so that the opening of the main frame 12 faces upward, and the bottom plate 11 is connected to the second portion 122.

In one embodiment, the pressure relief structure 21 and the pole assembly 22 of the battery 20 are disposed toward the bottom plate 11, the first portion 121 is disposed with the supporting portion 124, the other side of the battery 20 away from the side where the pressure relief structure 21 and the pole assembly 22 are disposed is placed on the supporting portion 124 of the main frame 12, and the battery 20 and the supporting portion 124 are fixed, and then the bottom plate 11 may be connected to the second portion 122, and the main frame 12 and the bottom plate 11 may be turned over, so that the opening of the main frame 12 faces upward, and the top cover 13 is connected to the first portion 121. In the present embodiment, the pressure relief structure 21 and the pole assembly 22 are disposed toward the bottom plate 11, and it is necessary to ensure that there is a gap between the pressure relief structure 21 and the bottom plate 11, and a gap between the pole assembly 22 and the bottom plate 11.

In one embodiment, the pressure relief structure 21 and the pole assembly 22 of the battery 20 are disposed toward the bottom plate 11, and the assembling method of the battery pack further includes: before the base plate 11 is attached to the main frame 12, the adjacent batteries 20 are connected by the bus bars to achieve direct serial or parallel connection of the batteries 20.

In one embodiment, the pressure relief structure 21 and the pole assembly 22 of the battery 20 are disposed toward the top cover 13, the support portion 124 is disposed on the first portion 121, the side of the battery 20 where the pressure relief structure 21 and the pole assembly 22 are disposed is placed on the support portion 124 of the main frame 12, and the battery 20 and the support portion 124 are fixed, and then the bottom plate 11 may be connected to the second portion 122, and the main frame 12 and the bottom plate 11 may be turned over so that the opening of the main frame 12 faces upward, and the top cover 13 is connected to the first portion 121.

In one embodiment, the pressure relief structure 21 and the pole assembly 22 of the battery 20 are disposed toward the top cover 13, the second portion 122 is disposed with the supporting portion 124, the other side of the battery 20 away from the side where the pressure relief structure 21 and the pole assembly 22 are disposed is placed on the supporting portion 124 of the main frame 12, and the battery 20 and the supporting portion 124 are fixed, and then the top cover 13 is connected to the first portion 121, and the main frame 12 and the top cover 13 may be turned over, so that the opening of the main frame 12 faces upward, and the bottom plate 11 is connected to the second portion 122.

In one embodiment, the pressure relief structure 21 and the pole assembly 22 of the battery 20 are disposed toward the top cover 13, and the assembling method of the battery pack further includes: before the top cover 13 is connected to the main frame 12, the adjacent batteries 20 are connected by the bus bars to directly connect the batteries 20 in series or in parallel.

In one embodiment, the method for assembling a battery pack further comprises: the top cover 13 is brought into contact with the battery 20 via the heat conduction portion 30, so that heat transfer between the top cover 13 and the battery 20 can be achieved via the heat conduction portion 30. The heat conducting part 30 can be heat conducting structural adhesive, the top cover 13 and the battery 20 are bonded through the heat conducting structural adhesive, the connection strength can be guaranteed, and heat transfer can be achieved through the heat conducting structural adhesive, so that the heat dissipation capacity of the battery 20 is improved.

In one embodiment, the method for assembling a battery pack further comprises: a temperature regulation plate 40 is installed between the top cover 13 and the battery 20, and the temperature regulation plate 40 is in contact with the battery 20, thereby achieving heat transfer between the top cover 13 and the battery 20 through the temperature regulation plate 40. The temperature adjustment plate 40 is in contact with the battery 20 through the heat conduction portion 30.

It is to be noted that it is not excluded that the connection between the top cover 13 and the first portion 121 can be completed before the installation of the battery 20 is performed, for example, the top cover 13 is connected to the first portion 121, the battery 20 is fixed to the second portion 122, and the connection between the first portion 121 and the second portion 122 is subsequently completed. It is not excluded that the connection of the base plate 11 to the second portion 122 can be completed before the installation of the battery 20 is carried out, for example, the battery 20 is fixed to the first portion 121 except for the connection of the base plate 11 to the second portion 122, and then the connection of the first portion 121 to the second portion 122 is completed.

In one embodiment, a method of assembling a battery pack is used to form the battery pack described above.

An embodiment of the present invention further provides a method for detaching a battery pack, please refer to fig. 15, the method for detaching a battery pack includes:

s201, disconnecting the first part 121 and the second part 122 which are overlapped up and down;

s203, the first part 121 or the second part 122 to which the battery 20 is connected is detached from the battery case 10 in synchronization with the battery 20.

The utility model discloses a battery pack's dismantlement method can make first part 121 or second part 122 that is connected with battery 20 pull down by battery box 10 with battery 20 synchronization through removing the connection of the first part 121 and the second part 122 of upper and lower superpose to this improves battery 20's dismantlement efficiency, thereby saves battery pack's maintenance cost.

In one embodiment, the method for disassembling a battery pack further comprises: before the connection between the first part 121 and the second part 122 which are stacked up and down is released, the bottom plate 11 is detached from the main frame 12, so that the second part 122 is detached from the battery case 10 in synchronization with the battery 20, thereby improving the detachment efficiency of the battery 20, and the detachment of the second part 122 from the battery 20 can be completed subsequently, thereby realizing the maintenance or replacement of the battery 20.

In one embodiment, the removal of the first part 121 or the second part 122 to which the battery 20 is connected from the battery case 10 in synchronization with the battery 20 includes: the bottom plate 11, the second part 122 and the battery 20 are synchronously dismounted from the battery box body 10, so that the dismounting efficiency of the battery 20 is improved, the battery 20 can be subsequently dismounted, the maintenance or replacement of the battery 20 is realized, and the bottom plate 11 and the second part 122 can be dismounted or not dismounted.

In one embodiment, the method for disassembling a battery pack further comprises: before the connection between the first part 121 and the second part 122 which are stacked up and down is released, the top cover 13 is detached from the main frame 12, so that the first part 121 and the battery 20 are detached from the battery case 10 simultaneously, thereby improving the detachment efficiency of the battery 20, and the detachment of the first part 121 and the battery 20 can be completed subsequently, thereby realizing the maintenance or replacement of the battery 20.

In one embodiment, the removal of the first part 121 or the second part 122 to which the battery 20 is connected from the battery case 10 in synchronization with the battery 20 includes: the top cover 13, the first part 121 and the battery 20 are synchronously detached from the battery box body 10, so that the detaching efficiency of the battery 20 is improved, the battery 20 can be subsequently detached, the maintenance or replacement of the battery 20 is realized, and the top cover 13 and the first part 121 can be detached or not detached.

In one embodiment, the method for disassembling a battery pack further comprises: after the first and

second body segments

1211 and 1212 are disconnected from each other, the first body segment 1211 is detached from the battery case 10, the first battery is detached in synchronization with the detachment of the first body segment 1211, and the second battery remains in the battery case 10, so that the first battery can be detached independently, the maintenance of the battery pack is facilitated, and the maintenance cost can be reduced.

Accordingly, after the first and

second body segments

1211 and 1212 are disconnected from each other, the second body segment 1212 is detached from the battery case 10, the second battery is detached in synchronization with the second body segment 1212, and the first battery remains in the battery case 10.

The first portion 121 may include a first body segment 1211 and a second body segment 1212, the first body segment 1211 and the second body segment 1212 being removably coupled, the first battery being secured to the first body segment 1211, and the second battery being secured to the second body segment 1212 to prevent the second battery from blocking the first battery from being removed from the battery housing 10 simultaneously with the first battery and the first body segment 1211, or to prevent the first battery from blocking the second battery from being removed from the battery housing 10 simultaneously with the second body segment 1212.

In one embodiment, after the third segment 1221 and the fourth segment 1222 are disconnected, the third segment 1221 is detached from the battery case 10, the first battery is detached simultaneously with the third segment 1221, and the second battery is retained in the battery case 10, so that the first battery can be detached separately, thereby facilitating the maintenance of the battery pack and reducing the maintenance cost.

Accordingly, after the third segment 1221 and the fourth segment 1222 are disconnected, the fourth segment 1222 is removed from the battery housing 10, the second battery is removed simultaneously with the removal of the fourth segment 1222, and the first battery remains in the battery housing 10.

The second portion 122 includes a third segment 1221 and a fourth segment 1222, the third segment 1221 and the fourth segment 1222 are detachably connected, the first battery is fixed to the third segment 1221, and the second battery is fixed to the fourth segment 1222, so as to prevent the second battery from blocking the first battery and the third segment 1221 from being removed from the battery case 10 simultaneously, or prevent the first battery from blocking the second battery and the fourth segment 1222 from being removed from the battery case 10 simultaneously.

fourth segment sections

1221 and 1222, and the third and

fourth segment sections

In one embodiment, the method for disassembling the battery pack is used for disassembling the battery pack.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A battery pack, characterized by comprising a battery case (10) and a battery (20), wherein the battery (20) is disposed in the battery case (10), the battery case (10) comprises a main frame (12), the main frame (12) comprises a first portion (121) and a second portion (122), the first portion (121) and the second portion (122) are stacked on top of each other, the first portion (121) and the second portion (122) are detachably connected, and the battery (20) is connected with the first portion (121) or the battery (20) is connected with the second portion (122).

2. A battery pack according to claim 1, wherein the battery (20) is bonded to the first part (121) or the battery (20) is bonded to the second part (122).

3. The battery pack according to claim 1, wherein the battery case (10) further comprises:

a bottom plate (11), the main frame (12) is connected with the bottom plate (11) to form an accommodating space (123), the battery (20) is disposed in the accommodating space (123), and the bottom plate (11) is connected with one side of the main frame (12) close to the second portion (122).

4. The battery pack according to claim 3, wherein the battery case (10) further comprises:

the top cover (13), the said top cover (13) is connected to one end far away from the said bottom plate (11) of the said main frame (12);

wherein the top cover (13) is connected with the other side of the main frame (12) close to the first part (121).

5. The battery pack according to claim 4, wherein the main frame (12) further includes a support portion (124), and the battery (20) is in contact with the support portion (124).

6. The battery pack according to claim 5, wherein the support portion (124) extends from the first portion (121), and the battery (20) is located between the support portion (124) and the bottom plate (11).

7. The battery pack of claim 5, wherein the support portion (124) extends from the second portion (122), and the battery (20) is located between the support portion (124) and the top cover (13).

8. The battery pack according to claim 5, wherein the support portions (124) are provided in pairs, one of the support portions (124) extending from the first portion (121) and the other of the support portions (124) extending from the second portion (122), and the battery (20) is located between the pair of support portions (124).

9. Battery pack according to claim 4, characterized in that the top cover (13) comprises heat exchanging channels, the top cover (13) being in contact with the batteries (20).

10. The battery pack according to claim 9, further comprising a heat conduction portion (30), the heat conduction portion (30) being located between the top cover (13) and the battery (20) such that the top cover (13) is in contact with the battery (20) through the heat conduction portion (30);

wherein the heat conducting part (30) is heat conducting glue.

11. The battery pack according to claim 4, further comprising a temperature regulation plate (40), the temperature regulation plate (40) being located between the top cover (13) and the battery (20), the temperature regulation plate (40) being in contact with the battery (20).

12. The battery pack according to claim 11, further comprising a heat conduction portion (30), the heat conduction portion (30) being located between the temperature-adjusting plate (40) and the battery (20) such that the temperature-adjusting plate (40) is in contact with the battery (20) through the heat conduction portion (30);

wherein the heat conducting part (30) is heat conducting glue.

13. Battery pack according to any of claims 3 to 12, characterized in that the battery (20) comprises a pressure relief structure (21), which pressure relief structure (21) is arranged towards the base plate (11);

the pressure relief structure (21) and the bottom plate (11) are arranged at intervals.

14. The battery pack of claim 13, wherein the battery (20) further comprises a pole assembly (22), the pole assembly (22) being located on the same side of the battery (20) as the pressure relief structure (21);

wherein the pole assembly (22) and the bottom plate (11) are arranged at intervals.

15. A battery pack according to any one of claims 3 to 12, wherein the main frame (12) comprises a rim (125), the rim (125) being arranged around the base plate (11) to form the receiving space (123), the rim (125) comprising at least part of the first portion (121) and the second portion (122).

16. The battery pack according to claim 15, wherein the main frame (12) further comprises a partition beam (126), the partition beam (126) being located inside the rim (125) to partition the accommodating space (123) into at least two sub-accommodating spaces (1231);

the plurality of batteries (20) are provided, each of the plurality of batteries (20) includes a first battery and a second battery, and the first battery and the second battery are respectively disposed in the two sub-accommodation spaces (1231).

17. The battery pack of claim 16, wherein the bezel (125) comprises a portion of the first portion (121) and the second portion (122), and the separator beam (126) comprises another portion of the first portion (121) and the second portion (122).

18. The battery pack according to claim 3, wherein the main frame (12) includes:

a rim (125), the rim (125) being disposed around the base plate (11) to form the receiving space (123);

a partition beam (126), the partition beam (126) being located inside the rim (125) to partition the accommodation space (123) into at least two sub-accommodation spaces (1231), the partition beam (126) including the first portion (121) and the second portion (122);

19. A battery pack according to claim 17 or 18, wherein the first part (121) comprises a first section (1211) and a second section (1212), the first section (1211) and the second section (1212) being detachably connected, the first battery being fixed to the first section (1211), the second battery being fixed to the second section (1212), in order to avoid the second battery blocking the first battery from being removed from the battery housing (10) simultaneously with the first section (1211) or the first battery blocking the second battery from being removed from the battery housing (10) simultaneously with the second section (1212);

or, the second part (122) comprises a third segment (1221) and a fourth segment (1222), the third segment (1221) and the fourth segment (1222) being detachably connected, the first battery being fixed to the third segment (1221), the second battery being fixed to the fourth segment (1222), so as to prevent the second battery from blocking the first battery and the third segment (1221) from being removed simultaneously from the battery housing (10), or to prevent the first battery from blocking the second battery and the fourth segment (1222) from being removed simultaneously from the battery housing (10).