WO2021238426A1

WO2021238426A1 - Stabilization apparatus, battery module, and electrical apparatus

Info

Publication number: WO2021238426A1
Application number: PCT/CN2021/086047
Authority: WO
Inventors: 兰天保; 李长江
Original assignee: 东莞新能安科技有限公司
Priority date: 2020-05-28
Filing date: 2021-04-09
Publication date: 2021-12-02

Abstract

A stabilization apparatus (10), which is used for stabilizing a flexible circuit board (30). The stabilization apparatus (10) comprises a base (11) and a support frame (12) arranged on the base (11). The stabilization apparatus (10) further comprises a moving block (13) and an accommodation space (16). The moving block (13) is arranged between the base (10) and the support frame (12). The moving block (13) can move towards or away from the support frame (12) relative to the base (11). The accommodation space (16) is provided between the moving block (13) and the support frame (12), and is used for accommodating the flexible circuit board (30). Further provided are a battery module (100) that has the stabilization apparatus (10) and an electrical apparatus (1000) that has the battery module (100). By means of the stabilization apparatus (10) effectively stabilizing the flexible circuit board (30), problems such as poor communication and being prone to failure caused by the flexible circuit board (30) being suspended are thus effectively prevented.

Description

Fixing device, battery module and electrical device

Technical field

This application relates to the field of batteries, in particular to a fixing device, a battery module having the fixing device, and an electrical device having the battery module.

Background technique

At present, most of the flexible circuit boards in the battery pack have no support and protection at the bending and suspended parts, so it is very easy to cause problems such as failure of the flexible circuit board and poor communication caused by vibration.

Summary of the invention

In view of this, it is necessary to provide a fixing device to solve the above-mentioned problems.

In addition, it is necessary to provide a battery module with the fixing device.

A fixing device for fixing flexible circuit boards. The fixing device includes a base and a bracket arranged on the base. The fixing device further includes a receiving space, which is provided between the base and the bracket and is used for receiving the flexible circuit board.

Optionally, the fixing device further includes a movable block provided between the base and the support, and the movable block can move toward or away from the support relative to the base, wherein the The accommodating space is arranged between the movable block and the bracket.

Optionally, the base includes a bottom plate and two opposite side plates, the side plates are respectively located on both sides of the bottom plate, the side plates are provided with sliding grooves, and the sides of the movable block are provided with A sliding block matched with the chute.

Optionally, the base includes a limiting block, the limiting block is fixed to the sliding groove, and the sliding block is provided between the limiting block and the bottom plate.

Optionally, the movable block is recessed in the direction of the bracket toward the surface of the bottom plate to form a first groove, the first groove is provided with a protruding column, and the base includes a protrusion provided on the bottom plate. Portion, the surface of the protruding portion facing away from the bottom plate is recessed in the direction of the bottom plate to form a second groove, the protruding portion is accommodated in the first groove, and the protruding column is correspondingly accommodated in the Mentioned second groove.

Optionally, the fixing device includes an elastic part, and the elastic part is arranged in the second groove.

Optionally, the elastic portion is a spring, and the height of the spring in a free state is greater than the depth of the second groove.

Optionally, the bracket is provided with a fixing member, the fixing member includes a connecting portion and a hook portion, the connecting portion is protrudingly provided on a surface of the bracket facing the bottom plate, and the hook portion is far away from the connecting portion. One end of the bracket is formed to extend outward, the side plate is provided with an opening, and the hook portion is correspondingly clamped in the opening.

Optionally, the fixing device further includes a first cushion block and a second cushion block, the first cushion block is disposed on the surface of the bracket facing the movable block, and the second cushion block is disposed on the movable block. The block faces the surface of the first cushion block, the accommodating space is provided between the first cushion block and the second cushion block, and the first cushion block and the second cushion block are elastic cushion blocks.

A battery module includes a battery module, a circuit board, a flexible circuit board connecting the battery module and the circuit board, and the above-mentioned fixing device, the fixing device is arranged on the circuit board, The flexible circuit board is arranged in the receiving space.

An electric device includes the above-mentioned battery module.

In this application, the fixing device is arranged on the circuit board, and the flexible circuit board is effectively fixed by the cooperation of the base and the bracket, so as to effectively prevent the easy failure and poor communication caused by the suspension of the flexible circuit board. . In addition, with the help of the design that the movable block can be movably arranged on the base and the elastic part cooperate to fix the flexible circuit board together with the bracket, it can effectively prevent the flexible circuit board from being easily placed in the air. In addition to problems such as failure and poor communication, it also greatly reduces the damage caused by the shaking of the flexible circuit board under vibration conditions.

Description of the drawings

FIG. 1 is a schematic structural diagram of a fixing device according to an embodiment of the application.

Fig. 2 is an exploded schematic view of the fixing device shown in Fig. 1.

Fig. 3 is a schematic diagram of a part of the structure of the base, the protrusion, the limit block and the protrusion shown in Fig. 2.

Fig. 4 is a partial exploded schematic view of the fixing device shown in Fig. 2.

Fig. 5 is a schematic partial cross-sectional view taken along the line VI-VI shown in Fig. 1.

Fig. 6 is a schematic diagram of the structure of the movable block and the base shown in Fig. 2.

FIG. 7 is a schematic structural diagram of a battery module according to an embodiment of the application.

FIG. 8 is a schematic diagram of a part of the structure of the battery module shown in FIG. 7.

FIG. 9 is a schematic diagram of modules of an electric device according to an embodiment of the application.

Symbol description of main components

Power consuming device 1000

Battery module 100

Fixing device 10

Base 11

Backplane 111

Side panel 112

Housing space 113

Chute 114

Bottom wall of tank 1141

Slot side wall 1142

First Chute Branch 1143

Second Chute Division 1144

Opening 1145

Limit block 115

The first limit department 1151

The second limit part 1152

Bump 116

Gap 1161

Protruding part 117

The second surface 1171

The second groove 1172

The bottom of the second tank 1173

Side of the second slot 1174

Resilience Department 118

The first end 1181

The second end 1182

Bracket 12

Fixed parts 121

Connection Department 1211

Gou Department 1212

Activity block 13

Slider 131

First surface 132

The first groove 133

The bottom of the first tank 1331

Side of the first slot 1332

Convex column 134

The third surface 135

The third groove 136

The first block 14

The second block 15

Containment space 16

Coordination Department 151

Cell module 20

Polar Ear 21

Circuit board 22

Flexible circuit board 30

The following specific embodiments will further illustrate this application in conjunction with the above-mentioned drawings.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terminology used in the specification of the application herein is only for the purpose of describing specific embodiments, and is not intended to limit the application.

Hereinafter, some embodiments of the present application will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Referring to FIG. 1, an embodiment of the present application provides a fixing device 10 for fixing a flexible circuit board 30 (refer to FIG. 7). The fixing device 10 includes a base 11, a bracket 12 and a receiving space 16. The bracket 12 is disposed on the base 11. The accommodating space 16 is provided between the base 11 and the bracket 12 for accommodating the flexible circuit board 30. Furthermore, the fixing device 10 further includes a movable block 13. The movable block 13 is arranged between the base 11 and the support 12. The movable block 13 can move toward or away from the support 12 relative to the base 11. The accommodating space 16 is provided between the movable block 13 and the bracket 12.

Referring to FIG. 2, the base 11 includes a bottom plate 111 and two opposite side plates 112. The two side plates 112 are respectively located on two sides of the bottom plate 111 and form an accommodating space 113 together with the bottom plate 111. The two side plates 112 are respectively provided with sliding grooves 114. The two sliding grooves 114 are arranged opposite to each other. In this embodiment, the base 11 and the two side plates 112 are integrally formed. The base 11 and the two side plates 112 are both rectangular. In other embodiments, the shapes of the base 11 and the two side plates 112 can be adjusted according to actual needs, and can be regular shapes such as a circle, a diamond, or other irregular shapes.

The movable block 13 is accommodated in the accommodating space 113. Two sides of the movable block 13 are respectively provided with sliding blocks 131 matched with the sliding grooves 114. The sliding block 131 is slidably connected to the sliding groove 114, so that the movable block 13 faces or faces away from the base 11 in the thickness direction of the fixing device 10 (that is, the X-axis direction) The stand 12 moves.

Referring to FIG. 2, in this embodiment, each sliding groove 114 includes a groove bottom wall 1141 and two opposite groove side walls 1142. The two groove side walls 1142 are respectively located on two sides of the groove bottom wall 1141. Wherein, the groove bottom wall 1141 and the two groove side walls 1142 both extend from the bottom plate 111 toward the bracket 12.

Referring to FIG. 3, further, the base 11 further includes a limiting block 115. The limiting block 115 is fixed in the sliding groove 114. Wherein, the sliding block 131 is provided between the limiting block 115 and the bottom plate 111. In this way, through the setting of the limit block 115, the sliding range of the slider 131 in the sliding groove 114 is limited, so as to ensure that the movable block 13 faces or faces away from the bottom plate 111 within a preset stroke. The bracket 12 slides.

Referring to FIG. 3, specifically, two protrusions 116 are provided in each sliding groove 114. Each bump 116 is protrudingly provided at the junction of the groove bottom wall 1141 and the groove side wall 1142. The two bumps 116 are opposed to each other and are spaced apart to form a gap 1161. In this embodiment, the limiting block 115 includes a first limiting portion 1151 and a second limiting portion 1152. The first limiting portion 1151 is received in the gap 1161. The second limiting portion 1152 is connected to the first limiting portion 1151 and connected between the two groove side walls 1142. In this way, through the arrangement of the limiting block 115, the sliding groove 114 is divided into a first sliding groove part 1143 and a second sliding groove part 1144. Wherein, the first chute subsection 1143 is close to the bottom plate 111 relative to the second chute subsection 1144. The sliding block 131 is slidably connected to the first sliding groove sub-part 1143. In one embodiment, the limiting block 115 is in interference fit with the protrusion 116 and the two groove sidewalls 1142.

In other embodiments, the limiting block 115 can be omitted according to actual needs.

Referring to FIGS. 2, 4 and 5, the movable block 13 includes a first surface 132 facing the bottom plate 111. The first surface 132 is recessed toward the bracket 12 to form a first groove 133. A protrusion 134 is provided in the first groove 133. Correspondingly, the base 11 further includes a protrusion 117. The protruding part 117 protrudes from the bottom plate 111 and is located between the two side plates 112. The protruding portion 117 includes a second surface 1171 facing away from the bottom plate 111. The second surface 1171 is recessed toward the bottom plate 111 to form a second groove 1172. The protrusion 117 is accommodated in the first groove 133, and the protrusion 134 is correspondingly accommodated in the second groove 1172, so as to be in the length direction of the fixing device 10 (ie, in the Y-axis direction). ) And the width direction of the fixing device 10 (ie, the Z-axis direction) to limit the movement of the movable block 13. In this embodiment, the height of the protrusion 134 and the height of the protrusion 117 are not higher than the depth of the first groove 133.

Referring to FIG. 4, in this embodiment, the first surface 132 is provided with two first grooves 133. The two first grooves 133 are respectively located on two sides of the first surface 132 close to the sliding block 131. Correspondingly, the bottom plate 111 is provided with two protrusions 117 corresponding to the first groove 133. In other embodiments, the number of the first groove 133 and the number of the protrusion 117 can be adjusted according to actual needs, and can be one, three, four, and so on.

Referring to FIG. 5, specifically, the first groove 133 includes a first groove bottom surface 1331 and a first groove side surface 1332 surrounding the periphery of the first groove bottom surface 1331. The protruding pillar 134 is protruded from the bottom surface 1331 of the first groove. The second groove 1172 includes a second groove bottom surface 1173 and a second groove side surface 1174 surrounding the periphery of the second groove bottom surface 1173. Wherein, the shapes of the first groove 133, the protrusion 134, and the second groove 1172 are not limited to regular shapes such as a circle, a rectangle, or other irregular shapes.

Referring to FIG. 5, further, the fixing device 10 further includes an elastic part 118. The elastic portion 118 is located between the bottom plate 111 and the movable block 13, and is used to support the movable block 13 to cooperate with the bracket 12 to fix the flexible circuit board 30, and to ensure that the movable block 13 is in position. Further, when the elastic portion 118 is compressed to a desired position, the stroke of the fixing device 10 in the thickness direction can restrict the movable block 13 from moving toward the support 12.

Referring to FIG. 5, in this embodiment, the elastic portion 118 has a hollow ring structure, and includes a first end portion 1181 and a second end portion 1182 facing away from the first end portion 1181. The elastic portion 118 is disposed in the second groove 1172. In this way, when the movable block 13 is disposed in the accommodating space 113, the elastic part 118 disposed in the second groove 1172 and the protruding part 117 are accommodated in the second groove 1172 together. A groove 133, and the protrusion 134 penetrates the elastic portion 118. At this time, the first end 1181 of the elastic portion 118 abuts the first groove bottom surface 1331, the second end 1182 of the elastic portion 118 abuts the second groove bottom surface 1173, the elastic portion 118 The height of is greater than the depth of the first groove 133. Wherein, the height of the protrusion 134 and the height of the protruding portion 117 are not higher than the depth of the first groove 133, so that the movable block 13 is supported by the elastic portion 118 to interact with the The bracket 12 is in contact with each other, and the movable block 13 and the bottom plate 111 are spaced apart, so as to ensure the stroke of the movable block 13 in the thickness direction of the fixing device 10.

Wherein, the height of the elastic portion 118 in the free state is greater than the depth of the first groove 133. The free state of the elastic portion 118 refers to the state when the elastic portion 118 is not compressed, that is, the state when the elastic portion 118 is disposed in the second groove 1172. The distance from the first surface 132 to the bottom plate 111 is the stroke of the movable block 13.

In one embodiment, the elastic portion 118 is a spring.

Referring to FIG. 2, the bracket 12 is fixed to the base 11. In this embodiment, the bracket 12 is also provided with two opposite fixing members 121 protrudingly. The fixing member 121 is arranged at both ends of the bracket 12. The bracket 12 is fixed to the base 11 by two fixing members 121.

Referring to FIGS. 2 and 3, specifically, each fixing member 121 includes a connecting portion 1211 and a hook portion 1212. The connecting portion 1211 protrudes from the surface of the bracket 12 facing the bottom plate 111. The hook portion 1212 is formed by extending one end of the connecting portion 1211 away from the bracket 12 outwardly. Correspondingly, an opening 1145 is provided on the bottom wall 1141 of the second chute branch 1144. The hook portion 1212 is correspondingly snapped into the opening 1145 so that the bracket 12 is fixed to the base 11.

In other embodiments, the fixing member 121 may be omitted. In this way, the bracket 12 can be fixed to the side plate 112 of the base 11 by welding, bonding, screwing, or other methods.

Referring to FIG. 1, the fixing device 10 further includes a first block 14 and a second block 15. The first cushion block 14 is disposed on the surface of the support 12 facing the movable block 13, and the second cushion block 15 is disposed on the surface of the movable block 13 facing the first cushion block 14. The accommodating space 16 is provided between the first cushion block 14 and the second cushion block 15. Wherein, the flexible circuit board 30 is fixed between the first spacer block 14 and the second spacer block 15. In this embodiment, the first spacer block 14 and the second spacer block 15 are elastic spacer blocks. Protect the flexible circuit board 30. In addition, the first block 14 and the second block 15 adopt the design of elastic block, which can make the first block 14 and the second block 15 be in the movable block 13 and the The support 12 is compressed, and when the movable block 13 moves up and down, the elastic pad itself has elastic properties, so that the flexible circuit board 30 can be firmly clamped to the first when the movable block 13 moves. Between the cushion block 14 and the second cushion block 15.

In other embodiments, the first block 14 and the second block 15 may be omitted.

Referring to FIGS. 4, 5 and 6, in this embodiment, the movable block 13 includes a third surface 135 facing away from the first surface 132. The third surface 135 is provided with two third grooves 136. Correspondingly, the second cushion block 15 is convexly provided with a mating portion 151 that cooperates with the third groove 136. The matching portion 151 is correspondingly clamped in the third groove 136 to fix the second cushion block 15 to the third surface 135 of the movable block 13. In other embodiments, the second spacer block 15 may be fixed to the third surface 135 of the movable block 13 by welding, bonding, screwing, or the like.

In one embodiment, the first cushion block 14 and the bracket 12 can be connected by clamping, welding, bonding, screwing, or the like.

Referring to FIG. 7, the present application also provides a battery module 100. The battery module 100 includes the fixing device 10, a battery cell module 20, a circuit board 22, and the flexible circuit board 30 connecting the battery module 20 and the circuit board 22. Wherein, the fixing device 10 is disposed on the circuit board 22. In this embodiment, the fixing device 10 is fixed to the circuit board 22 by screws. In other embodiments, the fixing device 10 can also be fixed to the circuit board 22 by a buckle.

Referring to Figures 7 and 8, specifically, one end of the flexible circuit board 30 is connected to the tab 21 on the cell module 20 to collect signals such as voltage and temperature of the cell module 20. The flexible circuit The other end of the board 30 is connected to the circuit board 22 on the cell module 20. Wherein, the circuit board 22 and the tabs 21 are respectively located on different sides of the battery module 20, and the flexible circuit board 30 needs to be bent 90 degrees to make the two ends of the flexible circuit board 30 and The tab 21 and the circuit board 22 are connected. In this way, in the present application, the fixing device 10 is used to fix the flexible circuit board 30 at the bend between the bracket 12 and the movable block 13 to avoid easy failure caused by the flexible circuit board 30 at the bend being placed in the air. Problems such as poor communication. In addition, due to the assembly tolerances of the battery module 100 during the production process, it is impossible to ensure that the height of the flexible circuit board 30 is the same every time. It may be necessary to adjust the height of the flexible circuit board 30 up and down to ensure that the flexible circuit board 30 and the tabs 21 and/or the circuit board 22, and the arrangement of the elastic part 118 ensures the movement stroke of the movable block 13, so as to adjust the flexible circuit board 30 and the connection part (ie, the tab 21 and/or The level of the circuit board 22) solves the problems caused by the assembly tolerance of the battery module 100 during the production process, so that the assembly of the battery module 100 is more flexible and convenient.

In this application, the design that the movable block 13 can be movably arranged on the base 11 cooperates with the elastic portion 118 to fix the flexible circuit board 30 together with the bracket 12, thereby greatly reducing vibration conditions. The damage caused by the shaking of the lower flexible circuit board 30 can effectively prevent problems such as easy failure and poor communication caused by the flexible circuit board 30 being placed in the air. In addition, the flexible circuit board 30 can be bent and fixed with the help of the fixing device 10, and the connection reliability of the flexible circuit board 30 can be improved. In addition, the fixing device 10 also has the advantages of simple installation and simple operation.

1, 5, 7 and 8, the steps of fixing the fixing device 10 to the circuit board 22 and using the fixing device 10 to fix the flexible circuit board 30 will be briefly described below.

Step 1: Fix the base 11 of the above-mentioned fixing device 10 to the circuit board 22 by screws.

Step two, the flexible circuit board 30 is set on the second cushion block 15. 7 and 8, one end of the flexible circuit board 30 is connected to the tab 21 on the cell module 20, and the other end of the flexible circuit board 30 is close to but not connected to the circuit board 22 temporarily.

Step 3: With the help of the bracket 12, the movable block 13 is pressed down in the direction of the bottom plate 111 along the thickness direction of the fixing device 10, the elastic portion 118 is continuously compressed by the force, and the movable block 13 continuously moves toward the bottom plate 111. Approach until the other end of the flexible circuit board 30 and the circuit board 22 are approximately at the same level. Then, the fixing members 121 at both ends of the bracket 12 are correspondingly connected to the opening 1145 on the base 11 to fix the bracket 12 to the base 11. At this time, the second pad on the movable block 13 The block 15 cooperates with the first cushion block 14 on the bracket 12 to clamp and fix the flexible circuit board 30 together. In other embodiments, the height of the flexible circuit board 30 can be adjusted according to actual conditions, and it does not necessarily need to be at the same level as the circuit board 22.

Step 4: Connect the other end of the flexible circuit board 30 to the circuit board 22. Wherein, after the bracket 12 is assembled to the base 11, if the other end of the flexible circuit board 30 and the circuit board 22 cannot be assembled due to the height difference, the flexible circuit board 30 can be adjusted by adjusting the movable block 13 up and down. The level with the circuit board 22 ensures the connection between the flexible circuit board 30 and the circuit board 22. In other embodiments, the other end of the flexible circuit board 30 may be connected to the circuit board 22 in step 2. Not limited.

Referring to FIG. 9, this application also provides an electric device 1000. The electrical device 1000 includes the battery module 100 described above. Wherein, the electrical device 1000 may be a mobile electronic device, an energy storage device, an electric vehicle, a hybrid electric vehicle, and the like. The mobile electronic device may be a mobile phone, a wearable electronic device, a tablet computer, a notebook computer, and the like.

The above descriptions are only preferred embodiments of this application and are not intended to limit this application. Any modification, equivalent replacement and improvement made within the spirit and principle of this application shall be included in the protection of this application. Within range.

Claims

A fixing device for fixing a flexible circuit board. The fixing device includes a base and a bracket arranged on the base. The fixing device is characterized in that the fixing device further includes:

The accommodating space is provided between the base and the bracket and is used for accommodating the flexible circuit board.
The fixing device according to claim 1, wherein the fixing device further comprises a movable block, the movable block is provided between the base and the support, and the movable block can be oriented toward or relative to the base. Move back to the bracket, wherein the accommodating space is provided between the movable block and the bracket.
The fixing device according to claim 2, wherein the base includes a bottom plate and two opposite side plates, the side plates are respectively located on both sides of the bottom plate, and the side plates are provided with sliding grooves , The side of the movable block is provided with a sliding block matched with the sliding groove.
The fixing device according to claim 3, wherein the base includes a limit block, the limit block is fixed to the chute, and the sliding block is provided between the limit block and the bottom plate between.
The fixing device according to claim 3 or 4, wherein the movable block is recessed toward the surface of the bottom plate in the direction of the bracket to form a first groove, and the first groove is provided with a convex post, The base includes a protruding part disposed on the bottom plate, the surface of the protruding part facing away from the bottom plate is recessed in the direction of the bottom plate to form a second groove, and the protruding part is accommodated in the first groove. A groove, and the protruding column is correspondingly accommodated in the second groove.
The fixing device according to claim 5, wherein the fixing device comprises an elastic part, and the elastic part is provided in the second groove.
7. The fixing device according to claim 6, wherein the elastic portion is a spring, and the height of the spring in a free state is greater than the depth of the second groove.
The fixing device according to claim 5, wherein the bracket is provided with a fixing member, the fixing member includes a connecting portion and a hook portion, and the connecting portion is protrudingly provided on a surface of the bracket facing the bottom plate, The hook portion is formed by extending one end of the connecting portion away from the bracket, the side plate is provided with an opening, and the hook portion is correspondingly clamped in the opening.
The fixing device according to claim 5, wherein the number of the first grooves is two, which are respectively located on the two sides of the sliding block on the surface of the movable block facing the bottom plate. Two protruding parts corresponding to the two first grooves are convexly provided.
The fixing device according to claim 9, wherein the first groove includes a first groove bottom surface and a first groove side surface surrounding a periphery of the first groove bottom surface, and the protruding column is provided on the The bottom of the first groove.
The fixing device according to claim 4, wherein the sliding groove comprises a groove bottom wall and two opposite groove side walls, and the two groove side walls are respectively located on both sides of the groove bottom wall, so The bottom wall of the groove and the two side walls of the groove both extend from the bottom plate toward the bracket;

There are two protrusions in the sliding groove, each of the protrusions is provided at the junction of the bottom wall of the groove and the side wall of the groove, and the two protrusions are arranged oppositely and oppositely to form a gap, so The limiting block includes a first limiting portion and a second limiting portion, the first limiting portion is received in the gap, and the second limiting portion is connected to the first limiting portion and connected to Between the side walls of the two grooves.
The fixing device according to any one of claims 2-4, wherein the fixing device further comprises a first block and a second block, and the first block is arranged on the bracket facing the The surface of the movable block, the second cushion block is disposed on the surface of the movable block facing the first cushion block, the containing space is disposed between the first cushion block and the second cushion block, the first cushion block The block and the second cushion block are elastic cushion blocks.
A battery module, comprising a battery module, a circuit board, and a flexible circuit board connecting the battery module and the circuit board, characterized in that the battery module also includes claims 1-12 According to any one of the fixing device, the fixing device is arranged on the circuit board, and the flexible circuit board is arranged on the accommodating space.
An electric device, characterized in that the electric device comprises the battery module according to claim 13.