Battery pack assembly and electric device

Abstract

The invention provides a battery pack assembly and an electric device. The battery pack assembly comprises a battery holder mounted on a device body of the electric device; the battery pack comprises a battery unit and a discharging assembly, the battery unit comprises a first discharging component, the discharging assembly comprises a second connecting piece and a second discharging component, and when the discharging assembly is located at a first position relative to the battery unit, a distance is formed between the second discharging component and the first discharging component in the first direction; and when the discharging assembly moves to a second position along the first direction relative to the battery unit, a discharging loop is formed. When the battery unit is installed on the battery holder, the discharging assembly is located at a first position relative to the battery unit, and when the battery unit is separated from the battery holder, the first connecting piece drives the second connecting piece so that the discharging assembly can move to a second position in the first direction relative to the battery unit. According to the battery pack, the requirement of self-discharging after the battery pack is used is met, and meanwhile, the electric quantity loss caused by unnecessary discharging of the battery pack is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electric devices, and in particular to a battery pack assembly and an electric device. Background Art

[0002] With the development of technology, electric devices are increasingly used in surgical operations to improve the operator's experience and enhance the surgical effect. Taking the electric stapler as an example, the electrification of the stapler can reduce the pulling force of the stapler on the tissue during operation, reduce the firing jitter, and improve the quality of the stapler. The electric stapler includes a stapler body, a stapler magazine mechanism connected to the distal end of the stapler body, and a firing mechanism that can translate in the stapler magazine mechanism to drive the stapler and cut the tissue. The stapler body is provided with a battery pack for providing energy to the firing mechanism. The battery pack needs to be provided with a discharge circuit, and after the stapler is used, the battery pack can discharge itself for easy waste disposal. However, in the prior art, after the battery pack is installed on the stapler, the battery pack begins to discharge itself, so a larger capacity battery needs to be configured, which is not environmentally friendly. Another prior art is to set a control chip in the battery pack to control the timed discharge of the battery pack, but it increases the overall cost. Summary of the invention

[0003] In response to the problems in the prior art, the purpose of the present application is to provide a battery pack assembly and an electric device to meet the needs of self-discharge of the battery pack after use while reducing the power loss caused by unnecessary discharge of the battery pack.

[0004] An embodiment of the present application provides a battery pack assembly for an electric device, the battery pack assembly comprising: a battery seat mounted on a device body of the electric device, the battery seat comprising a first connecting member; a battery pack comprising a battery cell and a discharge assembly, the battery cell comprising a first discharge component, the discharge assembly comprising a second connecting member and a second discharge component, when the discharge assembly is in a first position relative to the battery cell, the second discharge component and the first discharge component are spaced apart in a first direction, when the discharge assembly moves from the first position to a second position along the first direction relative to the battery cell, the second discharge component is electrically connected to the first discharge component to form a discharge circuit in the battery pack; when the battery cell is mounted on the battery seat, the first connecting member and the second connecting member are connected, the discharge assembly is in a first position relative to the battery cell, when the battery cell is separated from the battery seat, the first connecting member drives the second connecting member to move the discharge assembly to the second position along the first direction relative to the battery cell.

[0005] In some embodiments, after the battery unit is installed in the battery holder, when the battery pack moves relative to the battery holder in a second direction, the battery unit is separated from the battery holder, and the second direction is opposite to the first direction.

[0006] In some embodiments, the battery pack further includes a battery pack bracket, and the battery cell is mounted on the battery pack bracket.

[0007] In some embodiments, the battery pack bracket is provided with a first limiting member, and when the battery unit is installed in the battery holder, the first limiting member is located between the first discharge component and the second discharge component.

[0008] In some embodiments, a side of the first limiting member facing the second discharge component is provided with an inclined first guiding surface.

[0009] In some embodiments, the battery pack holder is provided with a first cavity, the second discharge component and the first discharge component are at least partially located inside the first cavity, and the first limiting member is a first protrusion provided on the inner wall of the first cavity.

[0010] In some embodiments, the battery pack holder further includes a second limiting member, and when the battery unit is separated from the battery holder, the second limiting member drives the second connecting member to partially move in a direction away from the first connecting member and separate from the first connecting member.

[0011] In some embodiments, the first connecting member includes a first embedding portion, and the second connecting member includes a second embedding portion, and when the battery unit is installed in the battery holder, the first embedding portion is embedded with the second embedding portion;

[0012] When the discharge assembly moves along the first direction relative to the battery unit, the second limiting member abuts against the first connecting member and drives the second engaging portion to move in a direction away from the first engaging portion, so that the second connecting member is separated from the first connecting member, and the battery pack as a whole is separated from the battery holder.

[0013] In some embodiments, a side of the second limiting member facing the discharge assembly is provided with an inclined second guiding surface.

[0014] In some embodiments, the battery pack holder also includes a second cavity, the discharge assembly at least partially enters the second cavity from one end of the second cavity, the battery holder at least partially enters the second cavity from the other end of the second cavity, and the second limiter is a second protrusion provided on the inner wall of the second cavity.

[0015] In some embodiments, the battery holder further includes a first abutting portion, and the discharge assembly further includes a second abutting portion. When the battery unit is installed on the battery holder, the first abutting portion abuts against the second abutting portion to keep the discharge assembly in the first position.

[0016] In some embodiments, the battery holder is provided with two first connecting members, the two first connecting members are arranged on both sides of the first supporting portion along the third direction, the second connecting member includes two connecting arms, and the two connecting arms are arranged opposite to the two first connecting members; and / or,

[0017] The discharge assembly further includes a discharge circuit board. The discharge assembly includes two groups of the second discharge components. The two groups of the second discharge components are respectively arranged at two ends of the discharge circuit board. The two connecting arms are arranged between the two groups of the second discharge components.

[0018] An embodiment of the present application also provides an electric device, comprising the above-mentioned battery pack assembly.

[0019] The battery pack assembly and electric device provided in this application have the following advantages:

[0020] By adopting the present application, the battery seat is arranged on the device body, and the battery pack is detachably installed on the battery seat. After the battery pack is installed on the device body through the battery seat, the battery pack will not discharge itself. When the battery pack is removed from the battery seat, the battery pack starts to discharge itself. Therefore, while meeting the need for the battery pack to discharge itself after use, it reduces the power loss caused by unnecessary discharge of the battery pack. There is no need to configure a large-capacity battery pack, which is more energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0022] Figure 1 is a schematic structural diagram of a battery pack assembly according to an embodiment of the present application;

[0023] Figure 2 is an exploded view of a battery pack assembly according to an embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the structure of the battery holder and the discharge assembly in accordance with an embodiment of the present application;

[0025] Figure 4 is a schematic structural diagram of a discharge assembly according to an embodiment of the present application;

[0026] Figure 5It is a schematic diagram of the structure of the discharge assembly and the battery unit according to an embodiment of the present application, wherein the two upper battery cells are omitted;

[0027] Figure 6 is a schematic structural diagram of a battery pack assembly bracket according to an embodiment of the present application;

[0028] Figure 7 is a bottom view of a battery pack assembly according to an embodiment of the present application;

[0029] Figure 8 yes Figure 7 Sectional view in the AA direction;

[0030] Fig. 9 yes Figure 7 Cross-sectional view in the BB direction;

[0031] Fig.10 is a schematic diagram of a discharge assembly according to an embodiment of the present application in a first position, wherein the two upper cells are omitted;

[0032] Fig.11 1 is a schematic diagram of a discharge assembly according to an embodiment of the present application in a second position, wherein the two upper battery cells are omitted.

[0033] Reference numerals:

[0034] 1 battery holder 32 second cavity

[0035] 11 base 33 first limiter

[0036] 12 first connecting member 34 second limiting member

[0037] 121 hook portion 4 discharge assembly

[0038] 13 first abutting portion 41 second connecting member

[0039] 2 battery unit 411 connecting arm

[0040] 21 battery cell 412 connection hole

[0041] 22 first discharge component 42 second abutting portion

[0042] 23 battery pack base 43 second discharge component

[0043] 3 battery pack bracket 44 discharge circuit board

[0044] 31 First cavity DETAILED DESCRIPTION

[0045] The example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as being limited to the embodiments set forth herein; on the contrary, these embodiments are provided so that the present application will be comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. "Or" and "or" in the specification may both mean "and" or "or". Although the terms "upper", "lower", "between", etc. may be used in this specification to describe different exemplary features and elements of the present application, these terms are used herein only for convenience, such as according to the directions of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional direction of the structure to fall within the scope of the present application. Although "first" or "second" etc. are used in this specification to represent certain features, they are only used to represent the function, and are not used as a limitation on the number and importance of specific features.

[0046] The present application provides a battery pack assembly for an electric device. The battery pack assembly includes a battery holder and a battery pack. The electric device is, for example, a surgical instrument such as an electric stapler, an electric suturer, or an electric cutting knife. The electric device also includes a device body. The battery pack includes a battery cell and a discharge assembly, the battery cell includes a first discharge component, and the discharge assembly includes a second discharge component. When the discharge assembly is in a first position relative to the battery cell, the second discharge component and the first discharge component are spaced apart in a first direction, a discharge circuit will not be formed in the battery pack, and the battery pack will not discharge itself. When the discharge assembly moves from the first position relative to the battery cell along the first direction to the second position, the second discharge component is electrically connected to the first discharge component, a discharge circuit is formed in the battery pack, and the battery pack can discharge itself. Therefore, by changing the relative position of the discharge assembly and the battery cell, the switching between the non-self-discharging state and the self-discharging state of the battery pack can be achieved.

[0047] The battery holder is installed on the device body of the electric device, and the battery holder includes a first connecting member. The discharge assembly also includes a second connecting member. When the battery cell is installed on the battery holder, the first connecting member and the second connecting member are connected, and the discharge assembly is in a first position relative to the battery cell, and the battery pack will not discharge by itself. When the battery cell is separated from the battery holder, the first connecting member drives the second connecting member to move the discharge assembly to the second position along the first direction relative to the battery cell, and the battery pack starts to discharge by itself. Therefore, while meeting the requirement of self-discharge of the battery pack after use, the present application reduces the power loss caused by unnecessary discharge of the battery pack, does not require a large-capacity battery pack, and is more energy-saving and environmentally friendly.

[0048] The structure of the battery pack assembly of each specific embodiment of the present application is described in detail below in conjunction with the accompanying drawings. It can be understood that the specific embodiments are not intended to limit the scope of protection of the present application.

[0049] like Figures 1 to 5 As shown, an embodiment of the present application provides a battery pack assembly for an electric device. The battery pack assembly includes a battery holder 1 and a battery pack. The battery holder 1 is installed on the device body of the electric device, and the battery holder 1 includes a base 11 and at least one first connector 12 provided on one side of the base 11. In this embodiment, the battery holder 1 is provided with two first connectors 12, and the two first connectors 12 are connected along a third direction S3 (shown in FIG. Fig. 9 ) are arranged opposite to each other. The battery pack includes a battery unit 2 and a discharge assembly 4. The battery unit 2 includes a battery seat base 23, at least one battery cell 21 and at least one first discharge component 22. In this embodiment, the battery unit 2 includes four battery cells 21 and four first discharge components 22 as an example for explanation, but the present application is not limited to this. The first discharge component 22 is a metal connecting sheet, and the first end of the first discharge component 22 is connected to the discharge end of the battery cell 21. The discharge assembly 4 includes a discharge circuit board 44, a second connecting member 41 and a second discharge component 43. The second connecting member 41 includes two connecting arms 411, and the two connecting arms 411 are arranged opposite to the two first connecting members 12, and the two connecting arms 411 are preferably partially elastic. The number of the second discharge components 43 is opposite to the number of the first discharge components 22, and two groups of the second discharge components 43 are provided, which are respectively arranged at the two ends of the second connecting member 41 along the fifth direction S5. In this embodiment, the second discharge component 43 is an elastic arm connected to the discharge circuit board 44.

[0050] The discharge assembly 4 can move in a first direction relative to the battery cell 2. The battery pack can move in the first direction relative to the battery holder 1 and be installed on the battery holder 1, and the battery cell 2 can move in a second direction relative to the battery holder 1 and be separated from the battery holder 1. In the present application, the first direction refers to the direction in which the battery pack moves toward the battery holder 1, and the second direction refers to the direction in which the battery pack moves away from the battery holder 1. For example, in Figure 2 In the perspective of , the first direction is S1 direction, that is, the direction in which the battery pack points to the battery holder 1, and the second direction is S2 direction, which is opposite to the first direction. When the position of the battery holder 1 changes, the first direction and the second direction also change accordingly.

[0051] like Figure 5As shown, when the discharge assembly 4 is in the first position relative to the battery cell 2, the second discharge component 43 is spaced apart from the second end of the first discharge component 22 in the first direction, that is, the second discharge component 43 does not contact the first discharge component 22, and a discharge circuit is not formed in the battery pack, and the battery pack does not discharge itself. The discharge assembly 4 moves from the first position relative to the battery cell 2 along the first direction to the second position ( Fig.11 When the discharge component 4 is in the position of the discharge component 4, the second discharge component 43 is electrically connected to the first discharge component 22, a discharge circuit is formed in the battery pack, and the battery pack starts to discharge itself. Therefore, by driving the discharge component 4 to move relative to the battery unit 2, the battery pack can be switched from a non-self-discharging state to a self-discharging state.

[0052] In this embodiment, the switching of the discharge state of the battery pack is achieved by the cooperation between the battery holder 1 and the battery pack. Figure 3 and Figure 4 As shown, the end of the first connector 12 is provided with a first engaging portion, which is a hook-shaped portion 121, and the end of the connecting arm 411 is provided with a second engaging portion, which is a connecting hole 412. The battery holder 1 is also provided with a first abutting portion 13, which is provided on the same side of the base 11 as the first connector 12, and the first abutting portion 13 protrudes toward the battery pack relative to the first connector 12, and the two first connectors 12 are respectively provided on the upper and lower sides of the first abutting portion 13. The discharge assembly 4 includes a second abutting portion 42. When the battery cell 2 is installed in the battery holder 1, the hook-shaped portion 121 is at least partially engaged in the connecting hole 412, so that the first connector 12 and the second connector 41 are connected, and the first abutting portion 13 abuts against the second abutting portion 42, so that the discharge assembly 4 is maintained in the first position relative to the battery cell 2.

[0053] When the battery pack moves relative to the battery holder 1 along the second direction and separates from the battery holder 1, the hook-shaped portion 121 is still connected with the connection hole 412, and the discharge assembly 4 is driven to move along the first direction through the second connection member 41, so that the discharge assembly 4 moves relative to the battery unit 2 along the first direction to the second position, so that the second discharge component 43 and the first discharge component 22 are electrically connected to form a discharge circuit in the battery pack. Here, the first engaging portion is the hook-shaped portion 121 and the second engaging portion is the connection hole 412 as an example for explanation. In other alternative embodiments, the first engaging portion may be the hook-shaped portion 121 and the second engaging portion may be the connection groove, or the first engaging portion may be the connection hole 412 or the connection groove, and the second engaging portion may be the hook-shaped portion 121, etc.

[0054] like Figure 2 and Figure 6 As shown, the battery pack further includes a battery pack bracket 3, and the battery unit 2 is mounted on the battery pack bracket 3, so the discharge assembly 4 can move along a first direction relative to the battery pack bracket 3. The battery pack bracket 3 is provided with a first cavity 31. The second discharge component 43 and the first discharge component 22 are at least partially located inside the first cavity 31. The battery pack bracket 3 is provided with a first limiting member 33, and the first limiting member 33 is a first protrusion provided on the inner wall of the first cavity 31. When the battery unit 2 is installed in the battery holder 1, the first limiting member 33 is located between the first discharge component 22 and the second discharge component 43, and the first limiting member 33 and the second discharge component 43 are abutted against each other to initially limit the first position of the discharge assembly 4.

[0055] The battery pack holder 3 further includes a second cavity 32, the discharge assembly 4 at least partially enters the second cavity 32 from one end of the second cavity 32, and the battery holder 1 at least partially enters the second cavity 32 from the other end of the second cavity 32. The battery pack holder 3 further includes a second stopper 34, which is a second protrusion provided on the inner wall of the second cavity 32. When the battery unit 2 is separated from the battery holder 1, the second stopper 34 drives the second connector 41 to move away from the first connector 12, so that the second connector 41 is separated from the first connector 12, so that the discharge assembly 4 can also be separated from the battery holder 1, that is, the battery pack as a whole is separated from the battery holder 1. The second connector 41 can be at least partially elastic, so that the connecting arm 411 can be bent and moved inward. Therefore, the separation of the battery pack from the battery holder 1 is divided into two stages: the first stage: the battery cell 2 and the battery pack holder 3 move along the second direction relative to the battery holder 1 and are separated from the battery holder 1, and the discharge assembly 4 still remains connected to the battery holder 1; the second stage: under the action of the second limiting member 34, the discharge assembly 4 is separated from the battery holder 1 and moves along the second direction relative to the battery holder 1 together with the battery cell 2 and the battery pack holder 3, and the battery pack as a whole is separated from the battery holder 1.

[0056] Combine the following Figures 7 to 11 The state switching principle of the battery pack assembly during assembly and disassembly is specifically introduced.

[0057] Figures 7-10 The structure of the battery pack assembly when the battery pack is installed in the battery holder 1 is shown. Figure 8 and Fig. 9 As shown, when the battery pack is installed in the battery holder 1, the hook portion 121 of the first connecting member 12 is engaged with the connecting arm 411. The first abutting portion 13 abuts against the second abutting portion 42 to keep the discharge assembly 4 in the first position relative to the battery unit 2. Figure 8 and Fig.10 As shown, the first stopper 33 is located between the second discharge component 43 and the first discharge component 22 to separate the first discharge component 22 and the second discharge component 43 and to stop the initial position of the second discharge component 43. The first stopper 33 is provided with an inclined first guide surface on one side facing the second discharge component 43, so that when the discharge assembly 4 is subjected to a force in the first direction, the second discharge component 43 can pass over the first stopper 33 and contact the first discharge component 22. Fig. 9 As shown, the second limiting member 34 is located at one side of the connecting arm 411 in the first direction without acting on the connecting arm 411 .

[0058] exist Figures 8 to 10 In the state of moving the battery pack support 3 and the battery unit 2 relative to the battery holder 1 in the second direction and separating from the battery holder 1, the battery pack assembly enters Fig.11 Shown status. Combined Fig.10 and Fig.11 It can be seen that in the first stage of the battery pack being separated from the battery holder 1, the battery pack bracket 3 and the battery cell 2 move relative to the battery holder 1 in the second direction, the hook portion 121 and the connecting arm 411 remain engaged and pull the discharge assembly 4 in the first direction, the discharge assembly 4 moves relative to the battery cell 2 in the first direction to the second position, the second discharge component 43 contacts and forms an electrical connection with the first discharge component 22, so that a discharge circuit is formed in the battery pack, and the battery pack begins to discharge itself. Fig. 9 and Fig.11 It can be seen that the second limit member 34 is provided with an inclined second guide surface on the side facing the discharge assembly 4. In the first stage of separation of the battery pack relative to the battery holder 1, the second limit member 34 contacts the connecting arm 411, and the force of the second limit member 34 on the connecting arm 411 along the second direction is converted into an inward force through the second guide surface, thereby applying an inward driving force to the connecting arm 411, and the end of the connecting arm 411 moves inward and away from the hook portion 121, that is, the end of the upper connecting arm 411 moves along the third direction S3, and the end of the lower connecting arm 411 moves along the fourth direction S4, so that the hook portion 121 is separated from the connecting hole 412 of the connecting arm 411. Fig.11 The state is the state of the battery pack assembly after the first stage of separation of the battery pack from the battery holder 1 is completed. Fig.11 In the state of , in the second stage of separation of the battery pack relative to the battery holder 1, the battery cell 2 and the battery pack support 3 continue to move in the second direction relative to the battery holder 1, the second connecting member 41 separates from the first connecting member 12, and the entire battery pack can be separated from the battery holder 1 as a whole and removed from the device body of the electric device. At this time, the discharge assembly 4 is still in the second position relative to the battery cell 2, the discharge circuit in the battery pack is still conductive, and the battery pack continues to self-discharge. If the battery pack is installed on the battery holder 1 again along the first direction at this time, the first abutting portion 13 of the battery holder 1 will drive the discharge assembly 4 to move in the second direction relative to the battery cell 2 and return to the first position, the second discharge component 43 separates from the first discharge component 22 to disconnect the discharge circuit, and the battery pack stops self-discharging. If the battery pack is removed from the battery holder 1 again, after the above-mentioned first and second stages, the battery pack is separated from the battery holder 1 as a whole, and the discharge circuit is conductive again to cause the battery pack to start self-discharging.

[0059] The above content is a further detailed description of the present application in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A battery pack assembly, It is characterized in that For an electric device, the battery pack assembly comprises: A battery holder, mounted on a device body of the electric device, the battery holder comprising a first connecting member; A battery pack, comprising a battery cell and a discharge assembly, wherein the battery cell comprises a first discharge component, the discharge assembly comprises a second connector and a second discharge component, when the discharge assembly is in a first position relative to the battery cell, the second discharge component is spaced apart from the first discharge component in a first direction, and when the discharge assembly moves from the first position relative to the battery cell along the first direction to a second position, the second discharge component is electrically connected to the first discharge component, thereby forming a discharge circuit in the battery pack; Wherein, when the battery cell is installed in the battery holder, the first connecting member and the second connecting member are connected, and the discharge assembly is in a first position relative to the battery cell; when the battery cell is separated from the battery holder, the first connecting member drives the second connecting member to move the discharge assembly to the second position along the first direction relative to the battery cell.

2. The battery pack assembly according to claim 1, It is characterized in that After the battery unit is installed on the battery seat, when the battery unit moves relative to the battery seat along a second direction, the battery unit is separated from the battery seat, and the second direction is opposite to the first direction.

3. The battery pack assembly according to claim 1, It is characterized in that The battery pack further includes a battery pack bracket, and the battery unit is mounted on the battery pack bracket.

4. The battery pack assembly according to claim 3, It is characterized in that The battery pack bracket is provided with a first limiting member, and when the battery unit is installed in the battery seat, the first limiting member is located between the first discharge component and the second discharge component.

5. The battery pack assembly according to claim 4, It is characterized in that A first inclined guiding surface is provided on a side of the first limiting member facing the second discharging component.

6. The battery pack assembly according to claim 4, It is characterized in that The battery pack bracket is provided with a first cavity, the second discharge component and the first discharge component are at least partially located inside the first cavity, and the first limiting member is a first protrusion provided on the inner wall of the first cavity.

7. The battery pack assembly according to claim 3, It is characterized in that The battery pack bracket also includes a second limiting member. When the battery unit is separated from the battery holder, the second limiting member drives the second connecting member to move in a direction away from the first connecting member and separate from the first connecting member, thereby separating the entire battery pack from the battery holder.

8. The battery pack assembly according to claim 7, It is characterized in that The first connecting member includes a first embedding portion, and the second connecting member includes a second embedding portion, and when the battery unit is installed in the battery holder, the first embedding portion is embedded with the second embedding portion; When the discharge assembly moves relative to the battery unit along the first direction, the second limiting member abuts against the first connecting member and drives the second engaging portion to move in a direction away from the first engaging portion, so that the second connecting member is separated from the first connecting member.

9. The battery pack assembly according to claim 7, It is characterized in that A second inclined guiding surface is provided on a side of the second limiting member facing the discharge assembly.

10. The battery pack assembly according to claim 7, It is characterized in that The battery pack holder also includes a second cavity, the discharge assembly at least partially enters the second cavity from one end of the second cavity, the battery holder at least partially enters the second cavity from the other end of the second cavity, and the second limiter is a second protrusion provided on the inner wall of the second cavity.

11. The battery pack assembly according to claim 1, It is characterized in that The battery holder further includes a first abutting portion, and the discharge assembly further includes a second abutting portion. When the battery unit is installed on the battery holder, the first abutting portion abuts against the second abutting portion to keep the discharge assembly in the first position.

12. The battery pack assembly according to claim 11, It is characterized in that The battery holder is provided with two first connecting members, the two first connecting members are arranged on both sides of the first supporting portion along the third direction, the second connecting member includes two connecting arms, the two connecting arms are arranged opposite to the two first connecting members; and / or, The discharge assembly further includes a discharge circuit board. The discharge assembly includes two groups of the second discharge components. The two groups of the second discharge components are respectively arranged at two ends of the discharge circuit board. The two connecting arms are arranged between the two groups of the second discharge components.

13. An electric device, It is characterized in that It comprises a device body and a battery pack assembly as described in any one of claims 1 to 12.

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