CN217009431U

CN217009431U - Battery pack

Info

Publication number: CN217009431U
Application number: CN202220825527.8U
Authority: CN
Inventors: 王帅锋; 杨培; 关俊山; 谷亮杰; 赵冬; 蒋昕玮
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-07-19
Anticipated expiration: 2032-04-11

Abstract

The utility model relates to the technical field of batteries and provides a battery pack. The battery pack includes: a battery case; the first connecting piece is detachably arranged in the battery box body; the first battery is fixed on the first connecting piece and is arranged in the battery box body through the first connecting piece; the second battery, the second battery sets up in the battery box, first connecting piece not with second battery fixed connection to avoid the second battery to block that first battery and first connecting piece are synchronous to be pulled down by the battery box, and can not influence the second battery, make things convenient for the maintenance of battery package with this, thereby improve the performance of battery package.

Description

Battery pack

Technical Field

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

Background

In the related art, a plurality of batteries are arranged in the battery pack, and after the battery pack is used for a long time, some batteries in the battery pack may have problems, so that the batteries need to be maintained, and all the batteries need to be taken out in the maintenance process, so that the maintenance efficiency of the battery pack is affected.

SUMMERY OF THE UTILITY MODEL

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

The present invention provides a battery pack, including:

a battery case;

the first connecting piece is detachably arranged in the battery box body;

the first battery is fixed on the first connecting piece and is arranged in the battery box body through the first connecting piece;

the second battery is arranged in the battery box body, and the first connecting piece is not fixedly connected with the second battery so as to prevent the second battery from blocking the first battery and the first connecting piece from being synchronously dismounted from the battery box body.

The battery pack provided by the embodiment of the utility model comprises a battery box body, a first connecting piece, a first battery and a second battery, wherein the first battery and the second battery are both arranged in the battery box body. Through being fixed in first connecting piece with first battery, and first connecting piece detachably sets up in the battery box to the second battery is not with first connecting piece fixed connection, thereby can make first battery and first connecting piece pull down by the battery box in step, and can not influence the second battery, thereby make things convenient for the maintenance of battery package, 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 an exploded view schematically illustrating a battery pack according to a first exemplary embodiment;

fig. 2 is an exploded view schematically illustrating a battery pack according to a second exemplary embodiment;

fig. 3 is a schematic view showing an assembled structure of a battery pack according to a second exemplary embodiment;

fig. 4 is an exploded view schematically illustrating a battery pack according to a third exemplary embodiment;

fig. 5 is a partial structural schematic view of a battery pack according to a fourth exemplary embodiment;

fig. 6 is a schematic flow chart illustrating a method of disassembling a battery pack according to an exemplary embodiment.

The reference numerals are explained below:

1. a battery module; 10. a battery case; 11. a base plate; 12. a frame; 13. a top cover; 131. mounting holes; 14. a partition beam; 141. a sub-accommodation space; 20. a first connecting member; 30. a first battery; 40. a second battery; 50. a second connecting member; 60. a connecting assembly; 61. a fixing member; 62. a reinforcement.

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, referring to fig. 1 to 4, the battery pack includes: a battery case 10; the first connecting piece 20, the first connecting piece 20 is detachably arranged in the battery box body 10; a first battery 30, the first battery 30 being fixed to the first connector 20 to be disposed in the battery case 10 through the first connector 20; the second battery 40 and the second battery 40 are disposed in the battery box 10, and the first connector 20 is not fixedly connected to the second battery 40, so as to prevent the second battery 40 from blocking the first battery 30 and the first connector 20 from being removed from the battery box 10 simultaneously.

The battery pack according to one embodiment of the present invention includes a battery case 10, a first connector 20, a first battery 30, and a second battery 40, and both the first battery 30 and the second battery 40 are disposed in the battery case 10. By fixing the first battery 30 to the first connecting member 20, the first connecting member 20 is detachably disposed on the battery box 10, and the second battery 40 is not fixedly connected to the first connecting member 20, so that the first battery 30 and the first connecting member 20 can be synchronously detached from the battery box 10 without affecting the second battery 40, thereby facilitating the maintenance of the battery pack and improving the performance of the battery pack.

It should be noted that, the first battery 30 is fixed to the first connecting member 20, and the first connecting member 20 is detachably disposed in the battery box 10, so that the first battery 30 can be stably disposed in the battery box 10, and the problem that the first battery 30 shakes during normal use of the battery pack is avoided. When the first battery 30 is to be maintained, the connection between the first connector 20 and the battery housing 10 may be released, so that the first connector 20 is detached from the battery housing 10, and the first battery 30 is taken out of the battery housing 10, and subsequent maintenance may be performed, for example, the first battery 30 on the first connector 20 is detached, a new first battery 30 is mounted on the original first connector 20, and the first battery 30 and the first connector 20 are subsequently mounted on the battery housing 10. Alternatively, the first battery 30 and the first connector 20 are directly replaced with new ones and mounted to the battery case 10.

The first battery 30 and the first connector 20 may not be fixedly connected to the second battery 40, so that the second battery 40 does not obstruct the first battery 30 and the first connector 20 when the first battery 30 and the first connector 20 are removed from the battery housing 10, thereby ensuring independent removal of the first battery 30 and the first connector 20 without affecting the second battery 40.

The battery includes a cell and an electrolyte, and 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.

It should be noted that neither the first battery 30 nor the first connector 20 is fixedly connected to the second battery 40, and the second battery 40 can be stably disposed in the battery housing 10, in which case the second battery 40 can be directly fixed to the battery housing 10, or the second battery 40 can be fixed to the battery housing 10 through other components, which are not limited herein.

In one embodiment, the first battery 30 is bonded to the first connecting member 20, so that the first battery 30 can be stably connected to the first connecting member 20, and the problem of shaking of the first battery 30 is avoided, thereby improving the safety performance of the first battery 30. The first battery 30 and the first connecting member 20 can be bonded by the heat conductive adhesive, which not only ensures the connection strength, but also realizes heat transfer, thereby improving the heat dissipation capability of the first battery 30.

In some embodiments, it is not excluded that the first battery 30 and the first connector 20 may be connected by a snap-fit connection or the like.

In one embodiment, the first battery 30 is a plurality of batteries, and the plurality of batteries 30 are fixed to the first connector 20, so that the plurality of batteries 30 can be simultaneously removed along with the first connector 20 when the first connector 20 is removed from the battery case 10.

The plurality of first batteries 30 may be fixed to the first connecting member 20 after forming the battery module 1, and the plurality of first batteries 30 may be fixed by end plates and side plates to form the battery module 1, and finally mounted in the battery case 10, as shown in fig. 5. The plurality of first cells 30 may be independently fixed to the first connecting member 20, i.e., without grouping the plurality of first cells 30, and at this time, the end plates and the side plates may be removed.

In one embodiment, as shown in fig. 1, 2 and 4, the battery pack further includes a second connector 50, the second connector 50 is detachably disposed in the battery box 10, the second battery 40 is fixed to the second connector 50 to be disposed in the battery box 10 through the second connector 50, and the first battery 30 is not fixedly connected to the second connector 50, so as to prevent the first battery 30 from blocking the second battery 40 and the second connector 50 from being simultaneously removed from the battery box 10, so that the first battery 30 is not affected when the second battery 40 and the second connector 50 are simultaneously removed from the battery box 10, thereby facilitating the maintenance of the battery pack.

The first battery 30 can be detachably disposed on the battery box 10 through the first connector 20, and the second battery 40 can be detachably disposed on the battery box 10 through the second connector 50, so that the first battery 30 or the second battery 40 can be independently detached from the battery box 10 according to maintenance requirements, thereby improving maintenance efficiency.

In one embodiment, the second battery 40 is bonded to the second connector 50, so that the second battery 40 can be stably connected to the second connector 50, and the problem of shaking of the second battery 40 is avoided, thereby improving the safety performance of the second battery 40. The second battery 40 and the second connecting member 50 can be bonded by the heat conductive adhesive, which not only ensures the connection strength, but also realizes heat transfer, thereby improving the heat dissipation capability of the second battery 40.

In some embodiments, it is not excluded that the second battery 40 and the second connector 50 may be connected by a snap fit or the like.

In one embodiment, the second battery 40 is a plurality of batteries, and the plurality of batteries 40 are fixed to the second connector 50, so that the plurality of batteries 40 can be simultaneously detached along with the second connector 50 when the second connector 50 is detached from the battery case 10.

The plurality of second batteries 40 may be fixed to the second connecting member 50 after forming a battery module, and the plurality of second batteries 40 may be fixed by end plates and side plates to form the battery module. The plurality of second cells 40 may be independently fixed to the second connecting member 50, that is, without grouping the plurality of second cells 40, and at this time, the end plates and the side plates may be removed.

It is noted that the first battery 30 and the second battery 40 may be the same type of battery, and in some embodiments, it is not excluded that the first battery 30 and the second battery 40 may be different types of batteries, and the utility model is not limited thereto. The plurality of first batteries 30 may be connected in series or in parallel, and the plurality of second batteries 40 may be connected in series or in parallel, for example, the plurality of first batteries 30 form a first module, the plurality of second batteries 40 form a second module, and the first module and the second module may be electrically connected, so that when the first battery 30 or the second battery 40 is independently removed, the connection relationship between the first module and the second module is disconnected, thereby ensuring that the first battery 30 and the second battery 40 do not affect each other.

Even if the first battery 30 and the second battery 40 are connected, for example, the first battery 30 and the second battery 40 are connected by a bus bar, since the second battery 40 is not connected to the first connector 20 and the second battery 40 is not connected to the second connector 50, when the first battery 30 and the second battery 40 are independently removed, only the connection between the first battery 30 and the second battery 40 needs to be broken, the first battery 30 can be removed along with the first connector 20, or the second battery 40 can be removed along with the second connector 50, so that the overall structure of the battery pack can not be damaged.

In some embodiments, the first connector 20 and the second connector 50 can be connected, but the first connector 20 and the second connector 50 are detachably connected, the first connector 20 and the second connector 50 can be directly connected, or the first connector 20 and the second connector 50 can be indirectly connected.

In some embodiments, the first connecting member 20 and the second connecting member 50 are spaced apart from each other, so that when the first connecting member 20 and the second connecting member 50 are independently removed, the removal of the direct connection between the first connecting member 20 and the second connecting member 50 is omitted, thereby avoiding the influence on the connection strength between the first connecting member 20 or the second connecting member 50 and the battery case 10.

In one embodiment, the first connector 20 includes a circulation flow passage, and a heat exchange medium, for example, a liquid heat exchange medium, a gas exchange medium, or a phase change material, etc., may be disposed in the circulation flow passage, so that the heat transfer performance of the first connector 20 may be improved, thereby achieving cooling or preheating of the first battery 30.

In one embodiment, the second connection member 50 includes a circulation flow passage, and a heat exchange medium, for example, a liquid heat exchange medium, a gas exchange medium, or a phase change material, etc., may be disposed in the circulation flow passage, so that the heat transfer performance of the second connection member 50 may be improved, thereby achieving cooling or preheating of the second battery 40.

It should be noted that the first connecting member 20 and the second connecting member 50 form a temperature adjusting mechanism of the battery pack, so as to adjust the temperature of the battery inside the battery pack, thereby ensuring the usability of the battery pack. The first connecting member 20 may have a plate-shaped structure, and the second connecting member 50 may have a plate-shaped structure, which may include upper and lower plate bodies stacked one on another, thereby forming a circulation flow path between the two plate bodies. The specific structural form of the plate-shaped structure and the specific structural form of the circulating flow channel are not limited, and can be selected according to actual requirements.

In one embodiment, as shown in fig. 1, the battery case 10 includes: a base plate 11; the frame 12 is arranged around the bottom plate 11; the first connecting member 20 is disposed in the frame 12, and at least one of the bottom plate 11 and the frame 12 is connected to the first connecting member 20, so that the first connecting member 20 can be stably disposed in the battery box 10, and at least one of the bottom plate 11 and the frame 12 is detachably connected to the first connecting member 20, that is, the bottom plate 11 is detachably connected to the first connecting member 20, and/or the frame 12 is detachably connected to the first connecting member 20, and it can also be ensured that the first connecting member 20 can be detached from the battery box 10.

In one embodiment, the second battery 40 is disposed in the battery case 10 by a second connector 50, and at least one of the bottom plate 11 and the frame 12 is detachably connected to the second connector 50.

It should be noted that the frame 12 is disposed around the bottom plate 11 and has no specific reference, and it is emphasized that the frame 12 forms a circumferentially closed space. The frame 12 is connected to the base plate 11, and the frame 12 may be disposed on the base plate 11, or the frame 12 may be connected to a circumferential edge of the base plate 11, which is not limited herein.

The bottom plate 11 and the frame 12 form an accommodating space, the first connecting member 20 is disposed in the accommodating space, and the second connecting member 50 is disposed in the accommodating space, that is, the first battery 30 and the second battery 40 are disposed in the accommodating space, and the first connecting member 20 and the second connecting member 50 can be independently removed from the bottom plate 11 and the frame 12, for example, the first connecting member 20 and the second connecting member 50 can be taken out from the top of the frame 12, or the first connecting member 20 and the second connecting member 50 can be taken out from the bottom of the frame 12.

In one embodiment, the frame 12 is detachably connected to the base plate 11, and the frame 12 is detachably connected to the first connecting member 20, that is, if the first connecting member 20 is taken out from the bottom of the frame 12 during the process of removing the first connecting member 20, the base plate 11 must be removed from the frame 12, and then the removal of the first connecting member 20 is completed, so that the first battery 30 can be detached alone.

Frame 12 and bottom plate 11 can the joint, and frame 12 can be connected through one or more fasteners with bottom plate 11, for example the bolt, and frame 12 can rivet through one or more rotatory tapping with bottom plate 11, does not do the restriction here, as long as on the basis of guaranteeing joint strength, convenient dismantlement can.

The frame 12 and the first connecting member 20 can be clamped, the frame 12 and the first connecting member 20 can be connected through one or more fasteners, such as bolts, the frame 12 and the first connecting member 20 can be riveted through one or more rotary tapping, and the connection strength is guaranteed.

In one embodiment, as shown in fig. 1, the first connecting member 20 is located between the frame 12 and the base plate 11, so that the frame 12 and the base plate 11 can reliably clamp the first connecting member 20, thereby ensuring the stability of the first connecting member 20, and after the base plate 11 is separated from the frame 12, the first connecting member 20 can be exposed, so that the first connecting member 20 can be detached from the bottom of the frame 12, thereby facilitating the independent maintenance of the first battery 30.

In one embodiment, as shown in fig. 1, the battery box 10 further includes a top cover 13, the top cover 13 is disposed on the frame 12, and the top cover 13 is detachably connected to the first battery 30, so that the top cover 13 can fix the first battery 30 when the battery pack is in normal use, and the top cover 13 can release the first battery 30 when the first battery 30 needs to be removed.

The top cover 13 and the bottom plate 11 are coupled to the top and bottom of the frame 12, respectively, so that the battery case 10 has a closed receiving space, thereby protecting the internal batteries.

It should be noted that the top cover 13 can be connected to the second battery 40, and when the first battery 30 is detached, the top cover 13 can be disconnected from the first battery 30, and if the first battery 30 is detached from the bottom of the frame 12, the top cover 13 may not be disconnected from the second battery 40. If the first battery 30 is detached from the top of the frame 12, the connection of the top cover 13 and the second battery 40 can be released, and the top cover 13 can be removed. In some embodiments, it is not excluded that the top cover 13 may be plural, and one top cover may correspond to the first battery 30 and another top cover may correspond to the second battery 40.

In some embodiments, the top cover 13 and the first battery 30 can be directly connected, for example, the top cover 13 and the first battery 30 can be snapped together.

In one embodiment, as shown in fig. 1, the battery pack further includes a connecting assembly 60, and the top cover 13 is connected to the first battery 30 through the connecting assembly 60, so that not only the connection stability of the top cover 13 to the first battery 30 can be ensured, but also the connection of the top cover 13 to the first battery 30 can be easily released.

The connection assembly 60 may include a screw, a bolt, a key, etc., for example, the connection assembly 60 includes a bolt, and the first battery 30 may be provided with a screw hole, so that the bolt may be connected with the screw hole after passing through the top cover 13. The first battery 30 may have a threaded hole in its housing structure, or the first battery 30 may have a raised structure externally provided thereon, which may have a threaded hole.

In one embodiment, the top cover 13 is removably connected to at least a portion of the connection assembly 60, the first battery 30 is fixedly connected to at least a portion of the connection assembly 60, such that when removal of the first battery 30 is performed, the connection assembly 60 is released from connection with the top cover 13, and at least a portion of the connection assembly 60 is removable with the first battery 30.

In some embodiments, the connecting assembly 60 may include a first clamping portion and a second clamping portion, the first clamping portion is fixed to the top cover 13, the second clamping portion is fixed to the first battery 30, and the first clamping portion and the second clamping portion are clamped, when the first battery 30 is removed, the first clamping portion and the second clamping portion are released from clamping, so that the first clamping portion is retained on the top cover 13, and the second clamping portion is removed along with the first battery 30.

In one embodiment, the coupling assembly 60 is bonded to the first battery 30, which not only ensures the coupling stability of the coupling assembly 60 to the first battery 30, but also allows at least a portion of the coupling assembly 60 to be detached together with the first battery 30. The connecting assembly 60 and the first battery 30 can be bonded by structural adhesive, and further, the connecting assembly 60 and the first battery 30 can be bonded by thermal conductive structural adhesive, so that not only can the connecting strength be ensured, but also the thermal conductive structural adhesive can realize heat transfer, thereby improving the heat dissipation capacity of the first battery 30.

In some embodiments, it is not excluded that the connecting assembly 60 is detachably connected to the first battery 30, for example, a glue layer with relatively weak adhesive strength is used between the connecting assembly 60 and the first battery 30, so that the connecting assembly 60 can be detached from the first battery 30 after the connecting assembly 60 is detached with the first battery 30, so as to repair or replace the first battery 30.

In one embodiment, as shown in fig. 1 and 4, the connection assembly 60 includes: a fixing member 61, the fixing member 61 being detachably connected with the top cover 13; the reinforcing member 62 is connected to one end of the fixing member 61 facing the first battery 30, the reinforcing member 62 is bonded to the first battery 30, so that not only can the connection strength between the reinforcing member 62 and the first battery 30 be ensured, but also the first battery 30 can be reliably protected, the stability of the first battery 30 is improved, and when the first battery 30 is removed, the connection between the fixing member 61 and the top cover 13 can be released.

The fixing member 61 may be a bolt, and the connection assembly 60 may further include a nut through which the bolt is fixed after passing through the top cover 13, and when the removal of the first battery 30 is performed, the nut may be removed from the bolt, so that the connection of the first battery 30 to the top cover 13 may be released. The fixing member 61 may also be a protruding structure, and the protruding structure is inserted into the top cover 13 to connect the top cover and the top cover, so that the first battery 30 can drive the protruding structure to separate from the top cover 13 when the first battery 30 is removed.

In some embodiments, the reinforcing member 62 may be connected to a plurality of first batteries 30 simultaneously, as shown in fig. 4, the reinforcing member 62 may be a plate body, the plate body is connected to a plurality of first batteries 30 simultaneously, and a plurality of fixing members 61 may be disposed on the reinforcing member 62. The top cover 13 may be provided with a plurality of mounting holes 131, and the fixing member 61 may be inserted into the mounting holes 131.

In some embodiments, one of the reinforcing members 62 may be connected to one of the first batteries 30, and one of the reinforcing members 62 corresponds to one of the fixing members 61.

In one embodiment, the connection assembly 60 may be plural.

In one embodiment, as shown in fig. 1 to 4, the battery case 10 further includes a partition beam 14, the partition beam 14 is disposed in the frame 12, and the first battery 30 and the second battery 40 are respectively located at both sides of the partition beam 14. One partition beam 14 may divide the accommodating space enclosed by the frame 12 into two sub-accommodating spaces, and the first battery 30 and the second battery 40 may be respectively located in the two sub-accommodating spaces, so that when the batteries are removed, the first battery 30 or the second battery 40 in one sub-accommodating space may be independently removed.

In some embodiments, when the battery case 10 includes one partition beam 14, the battery case 10 is formed with two sub-receiving spaces 141, the first battery 30 and the second battery 40 are respectively disposed in the two sub-receiving spaces 141, and the first connector 20 and the second connector 50 are respectively disposed in the two sub-receiving spaces 141, and accordingly, the plurality of first batteries 30 and the plurality of second batteries 40 are respectively disposed in the two sub-receiving spaces 141. The first connector 20 can simultaneously remove a plurality of first batteries 30 from one sub-receiving space 141, and the second connector 50 can simultaneously remove a plurality of second batteries 40 from another sub-receiving space 141. Each sub-receiving space 141 may correspond to at least one connecting assembly 60.

In some embodiments, the battery case 10 may include at least two partition beams 14, for example, the two partition beams 14 may be arranged to intersect, so that 4 sub-receiving spaces 141 may be formed, in which case, the battery case 10 may further include a plurality of third batteries and a plurality of fourth batteries, and accordingly, the third batteries and the fourth batteries may be arranged in the battery case 10 through third connectors and fourth connectors.

As shown in fig. 2 to 4, the battery box 10 may include at least two partition beams 14, for example, the two partition beams 14 may be arranged in a crossing manner, so that 4 sub-receiving spaces 141 may be formed, in this case, the first battery 30 is disposed in each of two adjacent sub-receiving spaces 141, the second battery 40 is disposed in each of the other two adjacent sub-receiving spaces 141, the first connector 20 may correspond to the first battery 30 in the two sub-receiving spaces 141, and the second connector 50 may correspond to the second battery 40 in the two sub-receiving spaces 141.

In one embodiment, the first connecting member 20 is located between the partition beam 14 and the base plate 11, so that the partition beam 14 and the base plate 11 can securely hold the first connecting member 20, thereby ensuring stability of the first connecting member 20, and after the base plate 11 is separated from the frame 12, the first connecting member 20 can be exposed, thereby enabling the first connecting member 20 to be detached from the frame 12, thereby facilitating independent maintenance of the first battery 30.

The partition beam 14 and the bottom plate 11 may be clamped, the partition beam 14 and the bottom plate 11 may be connected by one or more fasteners, such as bolts, and the partition beam 14 and the bottom plate 11 may be riveted by one or more rotary tapping, which is not limited herein, as long as the connection strength is ensured, and the disassembly is convenient.

The partition beam 14 and the first connecting member 20 may be clamped, the partition beam 14 and the first connecting member 20 may be connected by one or more fasteners, such as bolts, the partition beam 14 and the first connecting member 20 may be riveted by one or more rotary tapping, the partition beam 14 and the first connecting member 20 may only abut, and the connection strength is not limited herein as long as the separation beam is convenient to detach.

In one embodiment, as shown in fig. 1, the first and

second connectors

20 and 50 may be positioned below the partition beam 14 and the frame 12 and above the bottom plate 11, so that the first and

second connectors

20 and 50 may be stably disposed in the battery case 10, thereby securing stability of the first and

second batteries

30 and 40. When the first battery 30 or the second battery 40 is independently removed, the connection between the bottom plate 11 and the side frame 12 and the connection between the bottom plate 11 and the partition beam 14 may be released, and at this time, the first connection member 20 and the second connection member 50 may be exposed, so that the connection between the first connection member 20 and the side frame 12 may be released and the connection between the first connection member 20 and the partition beam 14 may be released, so that the first connection member 20 and the first battery may be simultaneously removed, or the connection between the second connection member 50 and the side frame 12 may be released and the connection between the second connection member 50 and the partition beam 14 may be released, so that the second connection member 50 and the second battery 40 may be simultaneously removed.

In some embodiments, it is not excluded that the bottom plate 11 may be at least two, and the independent bottom plates 11 may correspond to the first connector 20 and the second connector 50, respectively. As shown in fig. 1, the bottom plate 11 is an integral structure, which is not only simple in structure, but also ensures sealing performance.

It should be noted that the second battery 40 is disposed in the battery box 10 through the second connecting member 50, and the connection manner and the disposition manner of the second connecting member 50 can refer to the connection manner and the disposition manner of the first connecting member 20, which are not described herein again.

In one embodiment, as shown in fig. 2 to 4, the battery pack includes a first connecting member 20 and a second connecting member 50, the first battery 30 is disposed on the first connecting member 20, the second battery 40 is disposed on the second connecting member 50, the battery case 10 includes a frame 12 and a top cover 13, the first connecting member 20 is connected to the bottom of the frame 12, the second connecting member 50 is connected to the bottom of the frame 12, and the top cover 13 is disposed on the top of the frame 12, thereby forming a space for accommodating the batteries.

Compared with the battery pack in the above embodiment, the battery pack in this embodiment removes the bottom plate 11, that is, the first connecting member 20 and the second connecting member 50 achieve bottom protection of the battery case 10, and independent detachment of the battery is also extremely convenient.

In one embodiment, as shown in fig. 2 to 4, the battery case 10 further includes a partition beam 14, the partition beam 14 is disposed in the frame 12, and the first battery 30 and the second battery 40 are respectively located at both sides of the partition beam 14; wherein the first connector 20 and the second connector 50 are connected to the bottom of the partition beam 14, and the first connector 20 and the second connector 50 realize the bottom protection of the battery case 10.

It should be noted that other structures of the battery pack in fig. 2 to fig. 4 may be the same as the battery pack in fig. 1, and are not described herein again, and the difference is that the bottom plate 11 in fig. 1 may be eliminated from the battery pack in fig. 2 to fig. 4. Of course, the battery pack shown in fig. 2 to 4 may be provided with the bottom plate 11 shown in fig. 1, which is not limited herein.

In one embodiment, the first battery 30 is a quadrangular prism battery, and the second battery 40 is a quadrangular prism battery, so that the internal space of the battery case 10 can be maximally utilized to meet the energy demand. The first battery 30 is a quadrangular prism battery and the second battery 40 is a quadrangular prism battery, i.e., the first battery 30 and the second battery 40 may be square batteries.

An embodiment of the present invention further provides a method for detaching a battery pack, referring to fig. 6, the method for detaching a battery pack includes:

s101, releasing the connection between the first connecting piece 20 and the battery box body 10;

s103, the first connector 20 is detached from the battery box body 10, the first battery 30 is detached along with the first connector 20, and the second battery 40 is remained in the battery box body 10.

According to the method for dismounting the battery pack, the first connecting piece 20 and the battery box body 10 can be disconnected, the first battery 30 can be dismounted from the battery box body 10 synchronously along with the first connecting piece 20, the second battery 40 cannot be influenced, therefore, the maintenance of the battery pack is facilitated, the maintenance efficiency of the battery pack is improved, and the maintenance cost can be saved.

In one embodiment, the releasing the first connector 20 from the battery housing 10 includes: the connection between the first connecting member 20 and the frame 12 is released, that is, the first connecting member 20 and the frame 12 are detachably connected in a normal state, and when the first battery 30 is maintained, the connection between the first connecting member 20 and the frame 12 needs to be released, so that the first connecting member 20 can be taken down from the frame 12, and the first battery 30 can be detached independently.

In some embodiments, the bolts connecting the first connector 20 to the bezel 12 are removed, thereby removing the connection of the first connector 20 to the bezel 12.

In one embodiment, the releasing the connection of the first connector 20 to the battery case 10 further includes: before the first connecting member 20 is disconnected from the frame 12, the connection between the base plate 11 and the frame 12 is released, so that the first connecting member 20 can be exposed, and the connection between the first connecting member 20 and the frame 12 can be subsequently released.

In some embodiments, the connection base 11 and the frame 12 are bolted down, thereby removing the connection of the first connection member 20 and the frame 12.

In one embodiment, the releasing the connection of the first connector 20 to the battery case 10 further includes: the top cover 13 is disconnected from the first battery 30 so that the first connector 20 can be detached from the battery case 10 with the first battery 30.

In some embodiments, the connecting assembly 60 connecting the top cover 13 and the first battery 30 is removed, and in particular, the nut is removed from the bolt, so that the connecting assembly 60 and the top cover 13 are disconnected, thereby allowing at least part of the connecting assembly 60 to be detached from the battery housing 10 along with the first battery 30.

In one embodiment, the first connecting member 20 is removed from the bottom of the frame 12 to allow the first battery 30 to be removed through the bottom of the frame 12, i.e., when the first battery 30 is removed, the first battery 30 can be pulled out from the bottom of the frame 12, and the top cover 13 can be removed without removing, thereby reducing the number of steps for removing.

In some embodiments, the bolts connecting the bottom plate 11 and the side frame 12 are removed, the bottom plate 11 is removed, the bolts connecting the first connecting member 20 and the side frame 12 are removed, and the connecting assembly 60 connecting the top cover 13 and the first battery 30 is removed prior to or after the two steps, and before the two steps, which is not limited herein. The first connector 20 can be removed from the bottom of the bezel 12 by removing the bolts from the first connector 20 and the bezel 12.

In one embodiment, the method for disassembling a battery pack further comprises: the second connector 50 is disconnected from the battery case 10; the second connector 50 is removed from the battery case 10, and the second battery 40 is removed simultaneously with the second connector 50. The first battery 30 and the second battery 40 can be independently detached through the first connector 20 and the second connector 50, so that the batteries in the battery pack can be purposefully maintained, and the maintenance efficiency is improved. For the disassembling process of the second connector 50, which is not described in detail herein, reference may be made to the disassembling process of the first connector 20.

In one embodiment, the method for disassembling the battery pack is applied to 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 utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in 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 that have been 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, comprising:

a battery case (10);

a first connector (20), wherein the first connector (20) is detachably arranged in the battery box body (10);

a first battery (30), the first battery (30) being fixed to the first connector (20) so as to be disposed in the battery case (10) through the first connector (20);

the second battery (40), the second battery (40) sets up in battery box (10), first connecting piece (20) not with second battery (40) fixed connection to avoid the second battery (40) block first battery (30) and first connecting piece (20) are in step by battery box (10) dismantlement.

2. The battery pack according to claim 1, wherein the first battery (30) is bonded to the first connector (20).

3. The battery pack according to claim 1, wherein the first battery (30) is plural, and the plural first batteries (30) are each fixed to the first connecting member (20).

4. The battery pack according to claim 1, further comprising a second connector (50), the second connector (50) being detachably provided in the battery case (10), the second battery (40) being fixed to the second connector (50) to be provided in the battery case (10) through the second connector (50);

wherein the first battery (30) is not fixedly connected with the second connector (50) so as to avoid the first battery (30) blocking the second battery (40) and the second connector (50) from being synchronously detached from the battery box body (10).

5. The battery pack according to claim 4, wherein the second battery (40) is bonded to the second connector (50).

6. The battery pack according to claim 4, wherein the second battery (40) is plural, and the plural second batteries (40) are each fixed to the second connecting member (50).

7. A battery pack, as claimed in claim 4, characterised in that the first connector (20) is spaced from the second connector (50).

8. The battery pack according to any one of claims 1 to 7, wherein the battery case (10) includes:

a base plate (11);

a frame (12), wherein the frame (12) is arranged around the bottom plate (11);

the first connecting piece (20) is arranged in the frame (12), the bottom plate (11) is detachably connected with the first connecting piece (20), and/or the frame (12) is detachably connected with the first connecting piece (20).

9. The battery pack according to claim 8, wherein the rim (12) is detachably connected to the base plate (11), and the rim (12) is detachably connected to the first connecting member (20).

10. The battery pack according to claim 8, wherein the first connecting member (20) is located between the rim (12) and the base plate (11) such that the first connecting member (20) can be detached from the rim (12) after the base plate (11) is detached from the rim (12).

11. The battery pack according to claim 8, wherein the battery case (10) further comprises a top cover (13), the top cover (13) is disposed on the rim (12), and the top cover (13) is detachably connected to the first battery (30).

12. A battery pack, as claimed in claim 11, further comprising a connection assembly (60), the top cover (13) being connected to the first battery (30) by the connection assembly (60).

13. Battery pack according to claim 12, characterized in that the top cover (13) is detachably connected with at least part of the connecting assembly (60) and the first battery (30) is fixedly connected with at least part of the connecting assembly (60).

14. Battery pack according to claim 13, wherein the connection assembly (60) is glued to the first battery (30).

15. Battery pack according to claim 14, wherein the connection assembly (60) comprises:

a fixing member (61), wherein the fixing member (61) is detachably connected with the top cover (13);

a reinforcement (62), the reinforcement (62) being connected to an end of the fixing member (61) facing the first battery (30), the reinforcement (62) being bonded to the first battery (30).

16. The battery pack according to claim 8, wherein the battery case (10) further comprises a partition beam (14), the partition beam (14) being disposed within the bezel (12), the first battery (30) and the second battery (40) being located on both sides of the partition beam (14), respectively.

17. A battery pack as claimed in claim 16, wherein the first connector (20) is located between the partition beam (14) and the base plate (11) such that the first connector (20) can be removed from the rim (12) after the base plate (11) is detached from the rim (12).

18. The battery pack according to any one of claims 1 to 7, further comprising a second connecting member (50), wherein the second battery (40) is disposed on the second connecting member (50), wherein the battery case (10) comprises a rim (12) and a top cover (13), wherein the first connecting member (20) is connected to the bottom of the rim (12), the second connecting member (50) is connected to the bottom of the rim (12), and wherein the top cover (13) is disposed on the rim (12).

19. The battery pack according to claim 18, wherein the battery case (10) further comprises a partition beam (14), the partition beam (14) being disposed in the frame (12), the first battery (30) and the second battery (40) being respectively located on both sides of the partition beam (14);

wherein the first connector (20) and the second connector (50) are connected to the bottom of the partition beam (14).