CN216750108U

CN216750108U - Battery pack and electrical equipment

Info

Publication number: CN216750108U
Application number: CN202122980248.7U
Authority: CN
Inventors: 王雷; 蔡伟龙; 何林; 邓磊
Original assignee: Ecoflow Technology Ltd
Current assignee: Ecoflow Technology Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-06-14
Anticipated expiration: 2031-11-29

Abstract

The utility model relates to a battery assembly technical field provides a battery package and electrical equipment, wherein, the battery package includes first casing, the second casing, interfere piece and joint structure, first casing is used for with second casing assembly connection, the joint structure includes plug connector and joint spare, the plug connector is used for when second casing forward assembles in first casing, with the cooperation of pegging graft of joint spare, and be used for when second casing reverse assembly in first casing, take place to interfere the contact with interfering the piece. Under the condition that the installation direction of the battery pack is wrong during assembly, the plug connector abuts against the interference piece and interferes with the interference piece, so that the first shell and the lower shell cannot be assembled; so then realized the fool-proof effect when first casing and lower casing assembly, first casing and lower casing just can accomplish the assembly in the correct direction, have avoided leading to follow-up problem of needing to rework the repackage battery package after reverse assembly effectively.

Description

Battery pack and electrical equipment

Technical Field

The application relates to the technical field of battery assembly, and particularly provides a battery pack and electrical equipment.

Background

Energy storage power sources and other electrical devices typically have a battery pack that includes a housing and a battery disposed within the housing. The existing shell is generally of a split structure, the shell is at least divided into two parts, and after a battery is assembled in one part of the shell, the other shell is assembled with the shell; for example, the shell is divided into an upper shell and a lower shell, the upper shell and the lower shell have direction requirements during installation, and the upper shell and the lower shell can finish final assembly molding only when the upper shell is assembled on the lower shell along the correct direction; if the upper shell is assembled on the lower shell in the wrong direction, the battery pack cannot be finally assembled and molded in the subsequent assembling process, and the battery pack needs to be reworked and reassembled, so that the assembling efficiency of the battery pack is reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims to provide a battery pack and electrical equipment, which can enable a shell of the battery pack to be incapable of being assembled in a wrong direction, and avoid the problem that the battery pack needs to be reworked and reassembled subsequently after reverse assembly.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, the embodiment of the application provides a battery pack, including the second casing, first casing, interfere piece and joint structure, first casing is used for with second casing assembly connection, interfere the piece and set up on first casing, the joint structure includes plug connector and joint piece, the plug connector sets up in the second casing, the joint piece sets up in first casing, the plug connector is used for when second casing forward assembly in first casing, with joint piece grafting cooperation, and be used for when second casing reverse assembly in first casing, take place to interfere the contact with interfering the piece.

The embodiment of the application has at least the following beneficial effects: according to the battery pack provided by the embodiment of the application, the first shell and the second shell are installed by utilizing the matching of the plug connector and the clamping piece, when the second shell is assembled on the first shell in the forward direction, and the installation direction of the second shell and the first shell is correct, the plug connector can be smoothly matched with the clamping piece in a plug-in manner, and the assembly guiding effect can be achieved, so that the assembly convenience of the second shell and the first shell is improved; when the second shell is reversely assembled on the first shell and the installation direction of the second shell and the first shell is wrong, the plug connector can be abutted against the interference piece and interferes with the interference piece, so that the second shell and the first shell cannot be assembled; so then realized the fool-proof effect when first casing and second casing assembly, second casing and first casing only just can accomplish the assembly in the correct direction, have avoided leading to follow-up problem that need rework repackage battery package after the reverse assembly effectively, have improved the assembly rate of accuracy of the casing of battery package.

In one embodiment, the clip and the interference member are symmetrical about a center line of the first housing, and a line connecting the clip and the interference member passes through the center line of the first housing.

By adopting the technical scheme, when the assembly is carried out, the first shell and the second shell are normally assembled to enable the clamping piece and the plug connector to be inserted, and the first shell and the second shell are reversely assembled to enable the plug connector and the interference piece to interfere to avoid assembly error and subsequent rework.

In one embodiment, the interference piece is integrally formed on the first housing.

Through adopting foretell technical scheme, integrated into one piece's structure is favorable to improving the structural strength when second casing and first casing assemble.

In one embodiment, the interference piece is a surface of the first shell facing to one side of the second shell; or the plug connector is arranged on one side of the second shell, and the interference piece is a protruding structure arranged on the first shell.

By adopting the technical scheme, the interference piece can be a surface corresponding to the first shell or a protruding structure on the first shell according to different positions of the plug connector.

In one embodiment, the second shell is provided with a plurality of plug connectors along the width direction and/or the length direction, and the first shell is provided with a plurality of clamping pieces and a plurality of interference pieces; when the second shell is assembled on the first shell in the forward direction, the plurality of plug connectors and the plurality of clamping connectors are arranged in a one-to-one correspondence manner; when the second shell is reversely assembled on the first shell, the plurality of plug connectors and the plurality of interference pieces are arranged in a one-to-one correspondence mode.

By adopting the technical scheme, the plug connectors are arranged along the width direction of the second shell, the first shell is provided with a corresponding number of clamping pieces, and during assembly, each plug connector can be inserted into the corresponding clamping piece to realize guide assembly; when the installation direction mistake leads to the reverse installation, a plurality of plug connectors will interfere with a plurality of interference piece one-to-one and the counterbalance, leading to unable completion assembly to realize the slow-witted effect of preventing of assembly.

In one embodiment, the plug connector comprises a first rib formed by protruding along the side wall of the second shell, and a limit convex part arranged on one side surface of the first rib facing the first shell; the joint spare includes the protruding second rib that stretches the formation of the lateral wall along first casing, and the second rib is seted up towards one side surface of second casing and is supplied spacing convex part to insert and establish the spacing breach of complex.

Through adopting foretell technical scheme, the plug connector includes first rib and the spacing convex part of first rib towards a side surface of first casing, and the joint spare includes the spacing breach of second rib and second rib towards a side surface of second casing, establishes the cooperation through inserting of spacing convex part and spacing breach and realizes the assembly of first casing and second casing.

In one embodiment, the second ribs form an interference member toward a side surface of the second housing.

Through adopting foretell technical scheme, spacing breach on the second rib is used for the spacing convex part of cartridge first rib, and the second rib forms the interference piece towards one side surface of second casing, and when the installation direction between first casing and the second casing is wrong, spacing convex part on the first rib of second casing will support and hold on the surface of a second rib of first casing, lead to unable completion assembly, avoid accomplishing the assembly with wrong direction and lead to subsequent rework problem.

In one embodiment, the top inner wall of the first casing and the bottom inner wall of the second casing are both formed with a battery cell plugging support with a plurality of groups of plugging grooves.

Through adopting foretell technical scheme, all be formed with electric core grafting support through the top inner wall at first casing and the bottom inner wall of second casing, utilize electric core grafting support's inserting groove to install and deposit electric core, guarantee the stability that electric core was deposited.

In one embodiment, the side walls of the first shell and the second shell are both provided with a reinforcing structure and are both provided with heat dissipation holes; the reinforcing structure is provided with at least two positioning columns for positioning the battery protection plate; the outer side walls of the two opposite sides of the second shell are provided with connecting lugs, and connecting holes are formed in the connecting lugs.

By adopting the technical scheme, the whole structural strength of the battery pack is improved by forming the reinforcing structures on the side walls of the first shell and the second shell, and the heat dissipation holes are formed in the side walls of the first shell and the second shell to improve the heat dissipation effect of the battery pack; the reinforcing structure is provided with at least two positioning columns, and when the battery protection board is installed, the battery protection board can be positioned by the positioning columns so as to improve the convenience of assembly; the connection and installation are realized by the connecting lugs on the second shell, so that the battery pack is connected with the external base.

In a second aspect, the embodiment of the present application further provides an electrical apparatus, which includes the battery pack as described above.

The embodiment of the application has at least the following beneficial effects: the application provides an electrical equipment, owing to including foretell battery package, and foretell battery package can utilize the cooperation of plug connector, joint spare and interference piece to prevent the mistake of installation direction, so also improved electrical equipment's whole equipment efficiency.

Drawings

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

Fig. 1 is a schematic structural diagram of a battery pack provided in an embodiment of the present application;

fig. 2 is an exploded view of a battery pack provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a first housing according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a second housing according to an embodiment of the present disclosure;

fig. 5 is a schematic connection diagram of the plug member and the clip member when the first housing and the second housing are assembled in the front;

FIG. 6 is a schematic diagram illustrating an interference state of the plug and the interference member when the first housing and the second housing are reversely assembled according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of another interference piece of the first housing according to an embodiment of the present disclosure.

Wherein, in the figures, the respective reference numerals:

10-first housing 11-snap-in part 12-interference part

20-second housing 21-plug connector 30-battery cell plug-in connection support

31-plug groove 32-separating part 40-reinforcing structure

41-positioning column 50-heat dissipation hole 60-connecting lug

70-battery protection plate 100-battery pack 111-second ribs

112-limit notch 211-first rib 212-limit projection.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1 to 7 are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings only for the convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus, are not to be construed as limiting the present application.

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

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

The shell of the battery pack usually adopts a split structure, the shell is at least divided into two parts, and after the battery is assembled in one part of the shell, the other shell is assembled with the shell; for example, the shell is divided into an upper shell and a lower shell, the upper shell and the lower shell have direction requirements during installation, and the upper shell and the lower shell can finish final assembly molding only when the upper shell is assembled on the lower shell along the correct direction; if the upper shell is assembled on the lower shell in the wrong direction, the final assembly forming of the battery pack cannot be completed in the subsequent assembly process, and the battery pack needs to be reworked and reassembled, so that the assembly efficiency of the battery pack is reduced.

Therefore, the embodiment of the application provides a battery pack and electrical equipment, so that the shell of the battery pack cannot be assembled in the wrong direction, and the problem that the battery pack needs to be reworked and reassembled subsequently after reverse assembly is avoided.

Specifically, in a first aspect, the embodiment of the present application provides a battery pack 100, including a first housing 10, a second housing 20, an interference piece 12 and a clamping structure, where the first housing 10 is used for being assembled and connected with the second housing 20, the interference piece 12 is disposed on the first housing 10, the clamping structure includes a plug piece 21 and a clamping piece 11, the plug piece 21 is disposed on the second housing 20, the clamping piece 11 is disposed on the first housing 10, the plug piece 21 is used for being in a plugging fit with the clamping piece 11 when the second housing 20 is assembled on the first housing 10 in a forward direction, and is used for being in an interfering contact with the interference piece 12 when the second housing 20 is assembled on the first housing 10 in a reverse direction, so that the assembly cannot be completed when the first housing 10 is assembled on the second housing 20 in a reverse direction. The above-mentioned forward fitting refers to a fitting process in which the second housing 20 is fitted to the first housing 10 in a correct direction.

The position of the plug 21 may be arbitrarily set, and for example, may be set in an inner region or an outer region of the second housing 20, or may be directly set on the second housing 20; correspondingly, the positions of the clamping pieces 11 correspond to the positions of the plug pieces 21 one by one, so that during assembly, the first shell 10 is assembled on the second shell 20 in the correct direction, and each plug piece 21 can be inserted into the corresponding clamping piece 11, so that the guiding effect of the assembly of the first shell 10 on the second shell 20 is realized. When the first housing 10 is assembled on the second housing 20 in the wrong direction, that is, after the first housing 10 rotates 180 ° around the center line, the connector 21 will be aligned with the interference element 12; during the assembly, plug connector 21 will support and hold in interfering 12 and interfere, and first casing 10 and second casing 20 can't realize the assembly and form an organic whole to operating personnel can learn the assembly direction mistake, alright the relative position between first casing 10 and the second casing 20 of direct adjustment, assemble with the correct direction again can, realized the slow-witted effect of preventing of assembly.

It is understood that the plug 21 may be a protrusion structure such as a bump, a boss, etc. directly formed on the second housing 20, so that the plug 11 is a groove structure directly formed at a corresponding position of the first housing 10; alternatively, the plug 21 may be mounted on the side wall of the second housing 20, so that the clip 11 is correspondingly mounted on the side wall of the first housing 10 to realize the plug-in fit. The interference part 12 may be formed by protruding the sidewall of the first casing 10 to the corresponding position, or be provided in the structure of the bracket and the baffle of the first casing 10, when the first casing 10 is reversely installed (i.e. rotated 180 ° around the central line at the correct installation position), the interference part 12 is opposite to the plug part 21, and during the assembly, the plug part 21 is abutted against the interference part 12 and interferes, so that the first casing 10 cannot be assembled on the second casing 20, so that the installer can find in time that there is an error in the assembly direction.

According to the battery pack 100 provided by the embodiment of the application, the plug connector 21 is matched with the clamping piece 11 for installation, when the second shell 20 is assembled on the first shell 10 in the forward direction, and the installation direction of the second shell 20 and the first shell 10 is correct, the plug connector 21 can be smoothly matched with the clamping piece 11 in a plugging manner, and an assembly guiding effect can be achieved, so that the assembly convenience of the second shell 20 and the first shell 10 is improved; when the second housing 20 is reversely assembled to the first housing 10 and the installation direction of the second housing 20 and the first housing 10 is wrong, the plug-in connector 21 will abut against the interference piece 12 and interfere with the interference piece 12, so that the first housing 10 and the second housing 20 cannot be assembled; so then realized the fool-proof effect when first casing 10 and second casing 20 assemble, first casing 10 and second casing 20 just can accomplish the assembly in the correct direction, have avoided leading to the problem of follow-up need reworking repacking battery package 100 after the reverse assembly effectively, have improved the assembly accuracy of battery package 100's casing.

Referring to fig. 1 to 6, in one embodiment, the clip 11 and the interference 12 are symmetrical about a center line of the first housing 10, and a connection line between the clip 11 and the interference 12 passes through the center line of the first housing 10. When the first casing 10 is being mounted on the second casing 20, the clip member 11 of the first casing 10 is inserted into the clip member 21 of the second casing 20, so that the first casing 10 and the second casing 20 are completely assembled; when the installation direction of the first housing 10 is wrong, and the first housing 10 is reversely installed on the second housing 20 (i.e. the position after the first housing 10 rotates 180 ° around its central line at the normal installation position), the plug-in connector 21 of the second housing 20 is right opposite to the interference piece 12 of the first housing 10, and the first housing 10 cannot be assembled on the second housing 20, so as to remind the installer of the wrong installation position at this time.

Referring to fig. 1 to 6, in an embodiment, when the interference member 12 and the clamping member 11 are disposed on the first housing 10, the interference member 12 is integrally formed on the first housing 10. The integrally formed structure is advantageous in improving structural strength when the second housing 20 and the first housing 10 are assembled. Alternatively, when the interference piece 12 and the snap-in piece 11 are disposed on the second housing 20, the interference piece 12 is integrally formed on the second housing 20.

In one embodiment, when the plug 21 is disposed on the surface of the second housing 20 facing the first housing 10, the interference member 12 is the surface of the first housing 10 facing the second housing 20. Alternatively, when the plug 21 is disposed on one side of the second housing 20, for example, on the inner side of the second housing 20, the interference member 12 is a protruding structure disposed on the first housing 10; the protruding structure may be a bump, a protruding beam, or the like formed by protruding the side wall of the first housing 10, and only the protruding structure can interfere with the plug connector 21 when the first housing 10 and the second housing 20 are reversely installed; as shown in fig. 7, the plug 21 is disposed at one side in the second housing 20, in the first housing 10 in fig. 5, the clip 11 is disposed at a corresponding side in the first housing 10, the interference element 12 is a protruding block formed by protruding from an inner wall of the other corresponding side of the first housing 10, and when the first housing 10 and the second housing 20 are reversely installed, the plug 21 of the second housing 20 will abut against the protruding block in fig. 7 and interfere with each other.

When the interference member 12 is formed by a part of the first housing 10, the interference member 12 may be a flat surface of a corresponding side of the first housing 10, or a protruding bump or beam, etc., and when the interference member 12 is independent of the first housing 10, the interference member 12 may be a plate, a bracket, etc., mounted on the first housing 10, so that the interference member 12 interferes with the plug 21 when mounted in the reverse direction.

Referring to fig. 1 to 6, in an embodiment, the second housing 20 is provided with a plurality of plug connectors 21 along a width direction and/or a length direction, and the first housing 10 is provided with a plurality of clamping members 11 and a plurality of interference members 12; when the second housing 20 is assembled to the first housing 10 in the forward direction, the plurality of plug connectors 21 and the plurality of clip connectors 11 are arranged in a one-to-one correspondence; when the second housing 20 is reversely assembled to the first housing 10, the plurality of plug-in units 21 and the plurality of interference units 12 are arranged in one-to-one correspondence. When only one plug connector 21 is arranged on the second casing 20, the first casing 10 is correspondingly provided with one clamping piece 11 and an interference piece 12 which is symmetrical to the clamping piece 11 about the central line of the first casing 10; when assembled in the correct orientation, the first housing 10 is assembled on the second housing 20, and the plug-in connector 21 is inserted into the clip-in connector 11; when the first housing 10 is assembled in the wrong direction, which is equivalent to the first housing 10 being assembled on the second housing 20 after rotating 180 ° around the center line, the interference piece 12 is located right above the plug-in piece 21, the first housing 10 is assembled on the second housing 20, and the plug-in piece 21 abuts against the interference piece 12 to generate interference, so that the assembly between the first housing 10 and the second housing 20 cannot be completed. When two plug-in connectors 21 are arranged on the second housing 20 along the width direction, the first housing 10 is correspondingly provided with two clamping pieces 11 and two interference pieces 12 which are respectively symmetrical with the two clamping pieces 11 about the central line of the first housing 10 (or only one interference piece 12 is arranged, and the interference piece 12 is symmetrical with any one of the two clamping pieces 11 about the central line of the first housing 10); when assembled in the correct orientation, the first casing 10 is assembled on the second casing 20, and the two plug-in connectors 21 are inserted with the corresponding clamping connectors 11; when the first housing 10 is assembled in the wrong direction, which is equivalent to the first housing 10 being assembled on the second housing 20 after rotating 180 ° around the center line, the two interference pieces 12 are respectively located right above the corresponding plug-in piece 21 (or, in the case of only one interference piece 12, the interference piece 12 interferes with the corresponding plug-in piece 21), the first housing 10 is assembled on the second housing 20, and the plug-in piece 21 abuts against the interference piece 12 to interfere, so that the first housing 10 and the second housing 20 cannot be assembled.

Referring to fig. 1 to 6, in an embodiment, the plug 21 includes a first rib 211 formed along a sidewall of the second housing 20 in a protruding manner, and a limiting protrusion 212 disposed on a side surface of the first rib 211 facing the first housing 10; the clamping member 11 includes a second rib 111 formed along the side wall of the first housing 10 in a protruding manner, and a side surface of the second rib 111 facing the second housing 20 is provided with a limiting notch 112 for the limiting protrusion 212 to be inserted and matched. The second ribs 111 and the first ribs 211 are arranged correspondingly, when the first housing 10 is assembled on the second housing 20 in a correct direction, the second ribs 111 are located right above the first ribs 211, and the limiting convex parts 212 are inserted into the limiting notches 112, so that the assembly guiding function is realized.

Referring to fig. 1 to 6, in an embodiment, two first ribs 211 are convexly formed on the side walls of the two opposite sides of the second housing 20, and a limiting protrusion 212 is disposed on a side surface of each first rib 211 facing the first housing 10, wherein the two first ribs 211 on the same side are symmetrically distributed, and the two first ribs 211 on one side and the two first ribs 211 on the other side are symmetrically distributed; the two limiting convex parts 212 arranged on the two first ribs 211 on the same side are in staggered distribution, that is, the distance between the two limiting convex parts 212 and one side wall of the second shell 20 which convexly extends to form the first ribs 211 is different; meanwhile, two second ribs 111 are convexly extended from the side walls of the two opposite sides of the first housing 10, the second ribs 111 are opposite to the corresponding first ribs 211, and the limiting notches 112 formed in the second ribs 111 correspond to the limiting protrusions 212 on the corresponding first ribs 211 one by one. At this time, when the first housing 10 is assembled on the second housing 20 in the correct direction, each limiting protrusion 212 can be inserted into the corresponding limiting notch 112, and when the first housing 10 is assembled on the second housing 20 in the wrong direction, the limiting protrusions 212 respectively abut against the second ribs 111, so that the interference piece 12 is formed on one side surface of the second rib 111 facing the second housing 20.

Referring to fig. 1 to 6, in an embodiment, a battery cell plugging bracket 30 having a plurality of sets of plugging slots 31 is formed on each of a top inner wall of the first casing 10 and a bottom inner wall of the second casing 20. The battery cell is installed and stored by using the insertion groove 31 of the battery cell insertion bracket 30, so that the storage stability of the battery cell is ensured. Wherein, a separator 32 can be arranged between each adjacent group of plug-in slots for separating the adjacent plug-in slots 31; the partition 32 may be a partition plate of a cross structure, or a diamond column or the like.

Referring to fig. 1 to 4, in one embodiment, the sidewalls of the first casing 10 and the second casing 20 are formed with a reinforcing structure 40 and are formed with heat dissipation holes 50; the reinforcing structure 40 is provided with at least two positioning columns 41 for positioning the battery protection plate 70; the outer side walls of the two opposite sides of the second casing 20 are provided with connecting lugs 60, and the connecting lugs 60 are provided with connecting holes. The structural strength of the entire battery pack 100 is improved by forming a reinforcing structure 40 on the sidewalls of the first and

second cases

10 and 20, wherein the reinforcing structure 40 may be a reinforcing rib, a reinforcing bracket, a reinforcing mesh, or the like formed by the sidewalls of the first and

second cases

10 and 20; the positioning column 41 is disposed on the reinforcing structure 40, and when the battery protection plate 70 is mounted, the positioning column 41 can be used to position the battery protection plate 70, so as to improve the convenience of assembly. The side walls of the first casing 10 and the second casing 20 are provided with heat dissipation holes 50 to improve the air flow inside the battery pack 100, so as to improve the heat dissipation effect of the battery pack 100; the connection and installation are performed by using the connection lug 60 on the second housing 20, and the connection lug 60 is snapped with a connection hole, by which the battery pack 100 is connected to an external base.

In a second aspect, an embodiment of the present application further provides an electrical apparatus, which includes the battery pack 100 as described above. The electric equipment provided by the application comprises the battery pack 100, and the battery pack 100 can prevent the error of the installation direction by utilizing the matching of the plug-in connector 21, the clamping connector 11 and the interference piece 12, so that the overall equipment efficiency of the electric equipment is also improved.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A battery pack, comprising:

a first housing;

the second shell is used for being assembled and connected with the first shell;

an interference piece disposed on the first housing;

the joint structure, the joint structure includes plug connector and joint spare, the plug connector set up in the second casing, the joint spare set up in first casing, the plug connector is used for second casing forward assembly in during the first casing, with the cooperation of pegging graft of joint spare, and be used for the reverse assembly of second casing in during the first casing, with interference piece takes place to interfere the contact.

2. The battery pack according to claim 1, wherein: the clamping piece and the interference piece are symmetrical about a center line of the first shell in the depth direction, and a connecting line between the clamping piece and the interference piece penetrates through the center line.

3. The battery pack according to claim 2, wherein: the interference piece is integrally formed on the first shell.

4. The battery pack according to claim 2, wherein: the interference piece is a surface of one side of the first shell facing the second shell;

or the plug connector is arranged on one side of the second shell, and the interference piece is a protruding structure arranged on the first shell.

5. The battery pack according to claim 2, wherein: the second shell is provided with a plurality of plug connectors along the width direction and/or the length direction, and the first shell is provided with a plurality of clamping pieces and a plurality of interference pieces;

when the second shell is assembled on the first shell in the forward direction, the plurality of plug connectors and the plurality of clamping connectors are arranged in a one-to-one correspondence manner;

when the second shell is reversely assembled on the first shell, the plurality of plug connectors and the plurality of interference pieces are arranged in a one-to-one correspondence mode.

6. The battery pack according to claim 5, wherein: the plug connector comprises a first rib formed by protruding along the side wall of the second shell and a limit convex part arranged on the surface of one side, facing the first shell, of the first rib;

the clamping piece comprises a second rib formed by protruding extension of the side wall of the first shell, and the second rib faces towards the surface of one side of the second shell and is provided with a limiting notch for inserting the limiting convex part into the limiting notch.

7. The battery pack according to claim 6, wherein: the second ribs form the interference piece toward one side surface of the second shell.

8. The battery pack according to any one of claims 1 to 7, wherein: and the inner wall of the top of the first shell and the inner wall of the bottom of the second shell are both provided with a battery cell inserting support with a plurality of groups of inserting grooves.

9. The battery pack according to any one of claims 1 to 7, wherein: the side walls of the first shell and the second shell are both provided with a reinforcing structure and are both provided with heat dissipation holes; the reinforcing structure is provided with at least two positioning columns for positioning the battery protection board; the outer side walls of the two opposite sides of the second shell are provided with connecting lugs, and connecting holes are formed in the connecting lugs.

10. An electrical device, characterized by: comprising a battery pack according to any one of claims 1 to 9.