Detachable battery assembly

Abstract

The utility model provides a detachable battery assembly which comprises a battery bin and a battery detachably arranged in the battery bin, at least one end of the battery bin is provided with a positioning groove and a complete machine interface, a positioning column is arranged at the position, corresponding to the positioning groove, of the end of the battery, and the positioning column is clamped in the positioning groove; a battery output end is arranged at the position, corresponding to the complete machine interface, of the end of the battery and electrically connected with the complete machine interface. The positioning columns are arranged at the positions, corresponding to the positioning grooves of the battery compartment, of the end parts of the battery, and the positioning columns are clamped in the positioning grooves, so that the connection between the battery and the battery compartment can be reinforced, and the situation that the electric connection between the battery and the battery compartment is unstable or invalid due to collision of electric products is avoided; the output end of the battery is electrically connected with the complete machine interface at the end part of the battery compartment, so that the battery is electrically connected with the battery compartment; the battery compartment is detachably connected with the battery arranged in the battery compartment, so that the battery can be easily disassembled and replaced by a final user at any time, and the use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a detachable battery assembly. BACKGROUND

[0002] After the EU releases the new version of battery regulation (EU) 2023 / 1542, it is clearly required that portable batteries should be easily detached and replaced by end users at any time within the service life of the product. The existing battery is located inside the battery compartment, and the electrical connection between the battery and the battery compartment is generally realized by a conductive spring piece for detachable and replaceable electrical connection. If there is a large space between the battery and the battery compartment, the position of the battery and the battery compartment will deviate when the electrical product is subjected to impact, resulting in unstable or failed electrical connection. SUMMARY

[0003] In view of the problem that the existing battery and battery compartment are not easy to detach, the utility model provides a detachable battery assembly.

[0004] The utility model solves the technical problem that the technical scheme adopted is as follows:

[0005] The utility model provides a detachable battery assembly, which comprises a battery compartment and a battery detachably arranged in the battery compartment, at least one end of the battery compartment is provided with a positioning groove and a whole machine interface, the end of the battery is provided with a positioning column at the position corresponding to the positioning groove, and the positioning column is clamped in the positioning groove; the end of the battery is provided with a battery output end at the position corresponding to the whole machine interface, and the battery output end is electrically connected with the whole machine interface.

[0006] Optionally, the battery compartment comprises a battery shell and a cover plate, the battery shell is a hollow structure with one side opening, the positioning groove is arranged at the end of the battery shell and communicates with the opening side of the battery shell, the battery is arranged in the cavity of the battery shell, and the cover plate is detachably connected with the opening end of the battery shell.

[0007] Optionally, the whole machine interface comprises a positive electrode interface, a negative electrode interface and a temperature signal detection transmission interface, the battery output end comprises a positive electrode output end, a negative electrode output end and a temperature signal detection output end, the positive electrode output end is electrically connected with the positive electrode interface, the negative electrode output end is electrically connected with the negative electrode interface, and the temperature signal detection output end is electrically connected with the temperature signal detection transmission interface.

[0008] Optionally, the battery compartment is one of a rectangular body and a cylindrical body, the battery is one of a rectangular body and a cylindrical body, and the battery and the battery compartment are the same in shape.

[0009] Optionally, the battery comprises a battery core, a positive electrode connecting piece, a negative electrode connecting piece and a protection plate.

[0010] The positive and negative tabs are respectively arranged at two ends of the battery cell;

[0011] The protection plate is arranged at one end of the battery cell close to the positive tab, and the protection plate is provided with a positive output end, a negative output end and a temperature signal detection output end;

[0012] The two ends of the positive output end, the negative output end and the temperature signal detection output end are arranged on the two sides of the protection plate;

[0013] The side of the positive output end close to the battery compartment is electrically connected with the positive interface; the side of the positive output end close to the positive tab is electrically connected with one end of the positive connecting piece, and the other end of the positive connecting piece is electrically connected with the positive tab;

[0014] The side of the negative output end close to the battery compartment is electrically connected with the negative interface; the side of the negative output end away from the battery compartment is electrically connected with one end of the negative connecting piece, and the other end of the negative connecting piece is electrically connected with the negative tab.

[0015] Optionally, the battery comprises a first insulating gasket, which is arranged between the protection plate and the positive tab.

[0016] Optionally, the first insulating gasket comprises a bottom plate and a support, the support is arranged on one side of the bottom plate, the support is provided with a gap for the positive connecting piece and the negative connecting piece to pass through, the side of the bottom plate away from the support is connected with the end of the battery cell, one end of the positive connecting piece away from the positive tab is bent and arranged in the gap, and the side of the support away from the first insulating gasket is connected with the protection plate.

[0017] Optionally, the support is annular; or the support is provided with two supports, the supports are arc-shaped, and the gap is formed between the two supports.

[0018] In the direction perpendicular to the bottom plate, the projection of the support is located in the plane where the bottom plate is located.

[0019] Optionally, the battery comprises a second insulating gasket, the second insulating gasket is arranged at one end of the battery cell close to the negative tab, and one end of the negative connecting piece connected with the negative tab is located between the second insulating gasket and the battery cell.

[0020] Optionally, the battery comprises a shrink sleeve, the shrink sleeve is sleeved outside the battery cell and the negative connecting piece.

[0021] According to the detachable battery assembly provided by the utility model, the end part of the battery is provided with a positioning column at the position corresponding to the battery compartment positioning groove, the positioning column is clamped in the positioning groove, the connection between the battery and the battery compartment can be reinforced, the unstable or ineffective electrical connection between the battery and the battery compartment caused by the collision of the electrical product can be avoided, the battery output end provided at the end part of the battery is electrically connected with the whole machine interface at the end part of the battery compartment, so that the electrical connection between the battery and the battery compartment is realized. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the description of the utility model embodiment, obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without paying the creative labor.

[0023] Figure 1 It is the explosion schematic view of the detachable battery assembly provided by an embodiment of the utility model;

[0024] Figure 2 It is the explosion schematic view of the battery compartment provided by an embodiment of the utility model;

[0025] Figure 3 It is the explosion schematic view of the battery provided by an embodiment of the utility model;

[0026] Figure 4 It is the structural schematic view of the connection between the protection plate and the positive connection piece and the negative connection piece provided by an embodiment of the utility model;

[0027] Figure 5 It is the structural schematic view of the connection between the positive connection piece and the battery cell provided by an embodiment of the utility model;

[0028] Figure 6 It is the structural schematic view of the connection between the first insulating gasket and the battery cell provided by an embodiment of the utility model;

[0029] Figure 7 It is the structural schematic view of the first insulating gasket provided by an embodiment of the utility model;

[0030] Figure 8 It is the structural schematic view of the connection between the protection plate and the battery cell provided by an embodiment of the utility model;

[0031] Figure 9 It is the structural schematic view of the connection between the negative connection piece and the negative pole provided by an embodiment of the utility model;

[0032] Figure 10 is a structure schematic view of the second insulating gasket and the electric core connected according to an embodiment of the utility model;

[0033] Figure 11 is a structure schematic view of the shrink sleeve and the electric core connected according to an embodiment of the utility model;

[0034] The reference signs in the drawings of the specification are as follows:

[0035] 1-battery compartment;11-positioning groove;12-entire machine interface;121-positive electrode interface;122-negative electrode interface;123-temperature signal detection transmission interface;13-battery shell;131-first side plate;132-first end plate;14-cover plate;141-second side plate;142-second end plate;2-battery;21-positioning column;22-battery output end;221-positive electrode output end;222-negative electrode output end;223-temperature signal detection output end;23-electric core;231-positive electrode lug;232-negative electrode lug;24-positive electrode connecting piece;25-negative electrode connecting piece;26-protection plate;27-first insulating gasket;271-bottom plate;272-supporting piece;273-clearance;2731-first clearance;2732-second clearance;28-second insulating gasket;29-shrink sleeve. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clearly understood, the utility model is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0037] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not used to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0038] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "connect", "connect" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be mechanical connection, also can be electrical connection, it can be direct connection, also can be indirectly connected through intermediate medium, it can be the communication inside two elements, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0039] As Figures 1-3 Indicated, in an embodiment, the utility model provides a kind of detachable battery assembly, including battery compartment 1 and detachably set in battery compartment 1 battery 2, at least one end of battery compartment 1 is provided with positioning slot 11 and whole machine interface 12, the position of the end of battery 2 corresponding positioning slot 11 is provided with positioning column 21, and positioning column 21 is clamped in positioning slot 11;The position of the end of battery 2 corresponding whole machine interface 12 is provided with battery output end 22, and battery output end 22 is electrically connected with whole machine interface 12.

[0040] Specifically, one end of battery compartment 1 is provided with positioning slot 11 or whole machine interface 12, when the positioning column 21 of the end of battery 2 is clamped in positioning slot 11, the connection of battery 2 and battery compartment 1 can be reinforced, to avoid the problem that battery 2 and battery compartment 1 electric connection is unstable or invalid when electric product encounters collision situation;

[0041] Further, when battery compartment 1 is cylindrical, the position of positioning slot 11 does not coincide with the center of the end of battery compartment 1, when the positioning column 21 of the end of battery 2 is clamped in positioning slot 11, the rotation of battery 2 in battery compartment 1 can be avoided, to avoid the problem that battery output end 22 and whole machine interface 12 electric connection is unstable or invalid.

[0042] Battery output end 22 provided at the end of battery 2 is electrically connected with whole machine interface 12 at the end of battery compartment 1, to realize the electric connection of battery 2 and battery compartment 1. Compared with setting battery output end 22 at both ends of battery 2, setting battery output end 22 at the same end of battery 2 can reduce the volume of battery output end 22 in the length direction of battery 2, so that the volume of battery 2 is small, and it is convenient to carry.

[0043] Setting whole machine interface 12 at the same end of battery compartment 1 can reduce the volume of whole machine interface 12 in the length direction of battery compartment 1 compared with setting whole machine interface 12 at both ends of battery compartment 1, so that battery compartment 1 is highly integrated, small in size, and convenient to carry.

[0044] The battery compartment 1 of the application and the battery 2 provided in the battery compartment 1 are detachably connected, so that they can be easily detached and replaced by the end user at any time, and are convenient to use.

[0045] As Figure 2 shown in the drawings, in an embodiment, the battery compartment 1 comprises a battery shell 13 and a cover plate 14, the battery shell 13 is a hollow structure with one side open, the positioning groove 11 is arranged at the end of the battery shell 13 and communicates with the open side of the battery shell 13, the battery 2 is placed in the cavity of the battery shell 13, and the cover plate 14 is detachably connected with the open end of the battery shell 13.

[0046] Specifically, when the battery compartment 1 is cylindrical, the battery shell 13 comprises a first side plate 131 and first end plates 132 arranged at both ends of the first side plate 131, the first side plate 131 is arc-shaped, and the arc of the first side plate 131 is greater than 180°; the positioning groove 11 is arranged at one of the first end plates 132 of the battery shell 13 and communicates with the open side of the battery shell 13, so as to facilitate the clamping of the positioning column 21 of the battery 2 in the positioning groove 11. When the cover plate 14 and the battery shell 13 are in a sealed state, the rotation of the battery 2 in the battery compartment 1 can be avoided.

[0047] The cover plate 14 comprises a second side plate 141 and second end plates 142 arranged at both ends of the second side plate 141, the second side plate 141 is arc-shaped, and the arc of the second side plate 141 is less than 180°, the cover plate 14 is detachably connected with the open end of the battery shell 13, and the detachable connection modes include but are not limited to commonly used detachable connection modes such as sliding connection and clamping.

[0048] When the battery compartment 1 is a rectangular body (not shown in the drawings), the battery shell 13 comprises a third side plate, fourth side plates arranged at both sides of the third side plate, and third end plates arranged at both ends of the third side plate and the fourth side plates; the positioning groove 11 is arranged at one of the third end plates of the battery shell 13 and communicates with the open side of the battery shell 13, so as to facilitate the clamping of the positioning column 21 of the battery 2 in the positioning groove 11. When the cover plate 14 and the battery shell 13 are in a sealed state, the rotation of the battery 2 in the battery compartment 1 can be avoided.

[0049] The cover plate 14 comprises a fifth side plate, sixth side plates arranged at both sides of the fifth side plate, and fourth end plates arranged at both ends of the fifth side plate and the sixth side plates;

[0050] Further, in order to facilitate the arrangement of the positioning groove 11 and the whole machine interface 12 on the third end plate, the width of the third end plate is greater than the width of the fourth end plate.

[0051] The cover plate 14 is detachably connected with the open end of the battery shell 13, and the detachable connection modes include but are not limited to commonly used detachable connection modes such as sliding connection and clamping.

[0052] As Figures 1-3As shown, in one embodiment, the overall interface 12 includes a positive interface 121, a negative interface 122, and a temperature signal detection and transmission interface 123. The battery output terminal 22 includes a positive output terminal 221, a negative output terminal 222, and a temperature signal detection output terminal 223. The positive output terminal 221 is electrically connected to the positive interface 121, the negative output terminal 222 is electrically connected to the negative interface 122, and the temperature signal detection output terminal 223 is electrically connected to the temperature signal detection and transmission interface 123.

[0053] By electrically connecting the positive output terminal 221 to the positive interface 121 and the negative output terminal 222 to the negative interface 122, the battery 2 can provide power to external electrical devices through the battery compartment 1. The temperature signal detection output terminal 223 is electrically connected to the temperature signal detection transmission interface 123, which facilitates the detection of the temperature of the battery 2 and avoids the problem that the battery 2 will be too hot and the pressure of the battery 2 will be too high, causing the battery 2 to fail.

[0054] like Figures 1-2 As shown, in one embodiment, the battery compartment 1 is either a rectangle or a cylinder, and the battery 2 is either a rectangle or a cylinder. The battery 2 has the same shape as the battery compartment 1.

[0055] Specifically, when the battery compartment 1 is rectangular, the battery 2 is also rectangular, thereby preventing the battery 2 from moving inside the battery compartment 1 during use and ensuring an effective electrical connection between the battery 2 and the battery compartment 1.

[0056] When the battery compartment 1 is cylindrical, the battery 2 is also cylindrical, thus preventing the battery 2 from moving inside the battery compartment 1 during use and ensuring an effective electrical connection between the battery 2 and the battery compartment 1.

[0057] like Figures 3-5 and Figures 8-9 As shown, in one embodiment, the battery 2 includes a cell 23, a positive electrode connecting piece 24, a negative electrode connecting piece 25, and a protection plate 26;

[0058] The two ends of the battery cell 23 are respectively provided with a positive electrode tab 231 and a negative electrode tab 232;

[0059] The protection board 26 is located at one end of the battery cell 23 near the positive electrode tab 231. The protection board 26 is provided with a positive output terminal 221, a negative output terminal 222 and a temperature signal detection output terminal 223.

[0060] The positive output terminal 221, the negative output terminal 222, and the temperature signal detection output terminal 223 are all arranged to protrude from both sides of the protection plate 26;

[0061] The positive output terminal 221 is electrically connected to the positive interface 121 on the side near the battery compartment 1; the positive output terminal 221 is electrically connected to one end of the positive connecting piece 24 on the side near the positive tab 231, and the other end of the positive connecting piece 24 is electrically connected to the positive tab 231.

[0062] The negative output terminal 222 is electrically connected to the negative interface 122 on the side closer to the battery compartment 1; the negative output terminal 222 is electrically connected to one end of the negative connecting piece 25 on the side farther away from the battery compartment 1, and the other end of the negative connecting piece 25 is electrically connected to the negative ear 232.

[0063] Specifically, the positive output terminal 221 and the negative output terminal 222 are symmetrically arranged on the surface of the protection plate 26. The specific assembly process includes the following steps:

[0064] like Figure 4 As shown, the side of the positive output terminal 221 near the positive electrode tab 231 is welded to one end of the positive electrode connecting piece 24 by resistance welding.

[0065] like Figure 4 As shown, the side of the negative output terminal 222 closest to the positive electrode tab 231 is welded to one end of the negative electrode connecting piece 25 by resistance welding.

[0066] like Figure 5 As shown, the other end of the positive electrode connecting piece 24 and the positive electrode tab 231 are welded together by resistance welding;

[0067] like Figures 8-9 As shown, the other end of the negative electrode connecting piece 25 and the negative electrode ear 232 are welded together by resistance welding;

[0068] The above preparation method achieves electrical connection between battery cell 23 and protection board 26;

[0069] Furthermore, the protection plate 26 is provided with a positioning post 21. When the positioning post 21 is engaged in the positioning groove 11, it can prevent the battery 2 from rotating in the battery compartment 1.

[0070] like Figures 6-7 As shown, in one embodiment, the battery 2 includes a first insulating pad 27, which is disposed between the protection plate 26 and the positive electrode tab 231.

[0071] Before step (4) above, a first insulating pad 27 is attached to one end of the cell 23 near the positive electrode tab 231. The first insulating pad 27 is set to prevent the protection plate 26 and the negative electrode connecting piece 25 from directly contacting the positive electrode tab 231, thus preventing the battery 2 from short-circuiting.

[0072] like Figures 6-7As shown in the figure, in an embodiment, the first insulating pad 27 comprises a bottom plate 271 and a support 272, the support 272 is arranged on one side of the bottom plate 271, the support 272 is provided with a gap 273 for the positive electrode connecting piece 24 and the negative electrode connecting piece 25 to pass through, the side of the bottom plate 271 away from the support 272 is connected with the end of the battery cell 23, the end of the positive electrode connecting piece 24 away from the positive electrode lug 231 is bent and arranged in the gap 273, and the side of the support 272 away from the first insulating pad 27 is connected with the protection plate 26.

[0073] Specifically, the side of the bottom plate 271 away from the support 272 is adhered to the end of the battery cell 23 close to the positive electrode lug 231, the end of the positive electrode connecting piece 24 close to the positive electrode output end 221 is bent and arranged in the gap 273, the end of the negative electrode connecting piece 25 close to the negative electrode output end 222 is also bent and arranged in the gap 273, and the positive electrode connecting piece 24 and the negative electrode connecting piece 25 do not contact; the support 272 is supported by an insulating material, arranged on the outer periphery of the positive electrode output end 221 and the negative electrode output end 222, to avoid the positive electrode output end 221 and the negative electrode output end 222 from contacting other conductive components and causing short circuit; the other end of the negative electrode connecting piece 25 is attached to the outer surface of the battery cell 23, and is bent again at the position close to the negative electrode lug 232 of the battery cell 23 to be electrically connected with the negative electrode lug 232.

[0074] As shown in the figure, Figures 6-7 In an embodiment, the support 272 is annular; or, the support 272 is provided with two supports 272, the support 272 is arc-shaped, and the gap 273 is formed between the two supports 272; in the direction perpendicular to the bottom plate 271, the projection of the support 272 is located in the plane where the bottom plate 271 is located.

[0075] Specifically, the support 272 is annular, the support 272 is provided with a first gap 2731 and a second gap 2732 symmetrically, the end of the positive electrode connecting piece 24 close to the positive electrode output end 221 is bent and arranged in the first gap 2731, the end of the negative electrode connecting piece 25 close to the negative electrode output end 222 is also bent and arranged in the second gap 2732, and the positive electrode connecting piece 24 and the negative electrode connecting piece 25 do not contact; to avoid the positive electrode output end 221 and the negative electrode output end 222 from contacting and causing short circuit.

[0076] Specifically, the support 272 is provided in two, the support 272 is arc-shaped, and the two supports 272 have the same arc, the two supports 272 are symmetrically arranged on the surface of the bottom plate 271, and the two ends of the two supports 272 form a first gap 2731 and a second gap 2732, respectively. One end of the positive electrode connecting piece 24 close to the positive electrode output end 221 is bent and arranged in the first gap 2731, and one end of the negative electrode connecting piece 25 close to the negative electrode output end 222 is also bent and arranged in the second gap 2732. The positive electrode connecting piece 24 and the negative electrode connecting piece 25 do not contact; avoiding the positive electrode output end 221 and the negative electrode output end 222 from contacting and causing short circuit.

[0077] Further, in the direction perpendicular to the bottom plate 271, the projection of the support 272 is located on the plane of the bottom plate 271, and the outer periphery of the support 272 and the outer periphery of the bottom plate 271 are located on the same arc surface, so that the distance between the first gap 2731 and the second gap 2732 is larger, avoiding the positive electrode connecting piece 24 and the negative electrode connecting piece 25 from contacting.

[0078] As shown in the drawings, Figure 10 in an embodiment, the battery 2 includes a second insulating pad 28, the second insulating pad 28 is arranged at one end of the battery cell 23 close to the negative electrode lug 232, and the end of the negative electrode connecting piece 25 connected with the negative electrode lug 232 is located between the second insulating pad 28 and the battery cell 23.

[0079] Specifically, after the above step (4), the second insulating pad 28 is adhered at one end of the battery cell 23 close to the negative electrode lug 232, and the arrangement of the second insulating pad 28 avoids the negative electrode connecting piece 25 and the negative electrode lug 232 from contacting with other conductive components, avoiding the short circuit problem of the battery 2.

[0080] As shown in the drawings, Figure 11 in an embodiment, the battery 2 includes a shrink sleeve 29, the shrink sleeve 29 is sleeved on the outside of the battery cell 23 and the negative electrode connecting piece 25.

[0081] Specifically, the shrink sleeve 29 is made of thermosetting insulating material, and the length of the shrink sleeve 29 is greater than the length of the battery cell 23. The shrink sleeve 29 is sleeved on the outside of the battery cell 23 and the negative electrode connecting piece 25, avoiding the negative electrode connecting piece 25 from being exposed and causing short circuit problem; at the same time, the two ends of the shrink sleeve 29 can be covered by high temperature, covering the outer periphery of the second insulating pad 28 and the protection plate 26, connecting the second insulating pad 28, the battery cell 23 and the protection plate 26 as a whole, avoiding the second insulating pad 28 and the protection plate 26 from falling off from the two ends of the battery cell 23, affecting the safety performance of the battery 2.

[0082] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A detachable battery assembly characterized by: The battery compartment includes a battery shell and a cover plate, the battery shell is a hollow structure with one side opening, the positioning slot is arranged at the end of the battery shell and communicates with the opening side of the battery shell, the battery is arranged in the cavity of the battery shell, and the cover plate is detachably connected with the opening end of the battery shell.

2. The detachable battery assembly of claim 1, wherein: The whole machine interface includes a positive electrode interface, a negative electrode interface and a temperature signal detection transmission interface, the battery output end includes a positive electrode output end, a negative electrode output end and a temperature signal detection output end, the positive electrode output end is electrically connected with the positive electrode interface, the negative electrode output end is electrically connected with the negative electrode interface, and the temperature signal detection output end is electrically connected with the temperature signal detection transmission interface.

3. The detachable battery assembly of claim 1, wherein: The battery compartment is one of a rectangular body and a cylindrical body, the battery is one of a rectangular body and a cylindrical body, and the battery has the same shape as the battery compartment.

4. The detachable battery assembly of claim 1, wherein: The battery includes a battery cell, a positive electrode connecting piece, a negative electrode connecting piece and a protection plate.

5. The detachable battery assembly of claim 3, wherein: The two ends of the battery cell are respectively provided with a positive electrode lug and a negative electrode lug. The protection plate is arranged at one end of the battery cell close to the positive electrode lug, and the protection plate is provided with a positive electrode output end, a negative electrode output end and a temperature signal detection output end. The two ends of the positive electrode output end, the negative electrode output end and the temperature signal detection output end are arranged to protrude from the two sides of the protection plate. The side of the positive electrode output end close to the battery compartment is electrically connected with the positive electrode interface, the side of the positive electrode output end close to the positive electrode lug is electrically connected with one end of the positive electrode connecting piece, and the other end of the positive electrode connecting piece is electrically connected with the positive electrode lug. The side of the negative electrode output end close to the battery compartment is electrically connected with the negative electrode interface, the side of the negative electrode output end away from the battery compartment is electrically connected with one end of the negative electrode connecting piece, and the other end of the negative electrode connecting piece is electrically connected with the negative electrode lug. The battery includes a first insulating pad, and the insulating pad is arranged between the protection plate and the positive electrode lug.

6. The detachable battery assembly of claim 5, wherein: The first insulating pad includes a bottom plate and a support, the support is arranged on one side of the bottom plate, the support is provided with a gap for the positive electrode connecting piece and the negative electrode connecting piece to pass through, the side of the bottom plate away from the support is connected with the end of the battery cell, the end of the positive electrode connecting piece away from the positive electrode lug is bent and arranged in the gap, and the side of the support away from the first insulating pad is connected with the protection plate.

7. The detachable battery assembly of claim 6, wherein: The support is annular, or the support is provided with two arc-shaped supports, and the gap is formed between the two supports.

8. The detachable battery assembly of claim 7, wherein: In the direction perpendicular to the bottom plate, the projection of the support is located in the plane where the bottom plate is located. ​ 9. The detachable battery assembly of claim 5, wherein: The battery comprises a second insulating gasket, which is arranged at one end of the battery cell close to the negative tab, and the end of the negative connecting piece connected with the negative tab is located between the second insulating gasket and the battery cell.

10. The detachable battery assembly of claim 5, wherein: The battery comprises a shrink sleeve, which is sleeved outside the battery cell and the negative connecting piece.

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