Battery and terminal with same

Abstract

The utility model provides a battery and a terminal with the same, the battery comprises: a battery body, which comprises a battery shell and a battery cell arranged in the battery shell, and one end of the battery shell is provided with an accommodating part; the protection plate is separably arranged in the accommodating part, the protection plate comprises an injection molding shell, a protection plate body, and a positive electrode connecting part and a negative electrode connecting part which are arranged on the first side of the protection plate body, the battery shell wraps the protection plate body, the side wall of the injection molding shell is connected with the side wall of the accommodating part, the positive electrode connecting part is connected with the positive electrode of the battery cell, and the negative electrode connecting part is connected with the negative electrode of the battery cell. The negative electrode connecting part is connected with the negative electrode of the battery cell, and a conductive part exposed out of the injection molding shell is arranged on the second side of the protection plate body. According to the technical scheme provided by the invention, the problem that the battery cell cannot be recycled due to the fact that the protection plate and the battery cell are difficult to disassemble in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery and a terminal having the same. Background Art

[0002] With the rapid development of electronic devices, more and more digital products are emerging. With the rapid development of science and technology, the functions of digital products are gradually increasing, which requires higher and higher energy density of digital batteries. Lithium-ion batteries have large capacity and good safety performance, which makes lithium-ion batteries widely used.

[0003] In the related technology, the Chinese invention patent with application number 201811410265.3 discloses a battery cell and battery protection board packaging structure, including a battery cell, a battery protection board and a shell. The battery protection board is vertically installed on the top of the battery cell, and the battery cell, the battery protection board hard board and part of the battery protection soft board are installed inside the shell, so that the battery cell and the battery protection board are packaged together to improve the overall stability of the battery.

[0004] However, the protection plate and the battery cell in the above technical solution are difficult to disassemble, resulting in the inability to recycle the battery cell. Utility Model Content

[0005] The utility model provides a battery and a terminal having the same, so as to solve the problem in the related art that a protection plate and a battery core are difficult to disassemble, resulting in the inability to recycle the battery core.

[0006] According to one aspect of the utility model, a battery is provided, the battery comprising: a battery body, comprising a battery shell and a battery cell arranged in the battery shell, a receiving portion being provided at one end of the battery shell; a protective plate, detachably provided in the receiving portion, the protective plate comprising an injection molded shell, a protective plate body, and a positive electrode connecting portion and a negative electrode connecting portion provided on a first side of the protective plate body, the injection molded shell wraps the protective plate body, the side wall of the injection molded shell is connected to the side wall of the receiving portion, the positive electrode connecting portion is connected to the positive electrode of the battery cell, the negative electrode connecting portion is connected to the negative electrode of the battery cell, and a conductive portion exposed to the injection molded shell is provided on the second side of the protective plate body.

[0007] Furthermore, the accommodating portion includes a first side wall, a second side wall, a third side wall and a bottom wall, the first side wall and the third side wall are arranged opposite to each other, the second side wall is located between the first side wall and the third side wall, the bottom wall is arranged at the bottom of the first side wall, the second side wall and the third side wall, and the top of the first side wall, the second side wall and the third side wall forms an opening for installing a protective plate; a first avoidance notch is arranged on the bottom wall for avoiding the positive pole of the battery cell.

[0008] Furthermore, the battery also includes a positive electrode connector, the connection end of the positive electrode connector is connected to the positive electrode of the battery cell through the positive electrode connector, and the positive electrode connector is inserted into the first avoidance gap.

[0009] Furthermore, the battery casing is made of metal material, the outer wall of the battery casing is covered with an insulating layer, the negative electrode of the battery cell is connected to the bottom wall, and the connecting end of the negative electrode connecting part is connected to the bottom wall.

[0010] Furthermore, the battery also includes an insulating film, which is arranged between the first side wall, the second side wall, the third side wall and the bottom wall and the injection molded shell, and has a second avoidance gap for avoiding the connection end of the negative electrode connecting part.

[0011] Furthermore, a welding notch for welding the connection end of the positive electrode connection part and the positive electrode of the battery cell and the connection end of the negative electrode connection part and the negative electrode of the battery cell is formed on one side of the accommodating part corresponding to the second side wall.

[0012] Furthermore, a first right angle or a first obtuse angle is formed between the first side wall and the bottom wall, a second right angle or a second obtuse angle is formed between the third side wall and the bottom wall, and the end surface of the injection-molded housing matches the first side wall and the third side wall.

[0013] Furthermore, the injection molded shell includes a first injection molded rib, a second injection molded rib, a third injection molded rib, a fourth injection molded rib, a fifth injection molded rib and a sixth injection molded rib. The first injection molded rib is fitted with the first side wall, the second injection molded rib is fitted with the second side wall, the third injection molded rib is fitted with the third side wall, the sixth injection molded rib is fitted with the bottom wall, the sixth injection molded rib is provided with a connecting hole for avoiding the positive electrode connector, and the fifth injection molded rib is provided with a third avoidance gap for avoiding the conductive part.

[0014] Furthermore, the conductive part includes a conductive copper foil arranged on the protection plate body.

[0015] Furthermore, an explosion-proof structure is provided on the outer side wall of the battery housing.

[0016] According to another aspect of the present invention, a terminal is provided, comprising a battery, where the battery is the battery provided above.

[0017] The technical solution of the utility model is applied, and the battery includes a battery body and a protection plate. The battery body includes a battery shell and a battery cell. The battery cell is arranged in the battery shell. One end of the battery shell is provided with a receiving portion. The protection plate is detachably arranged in the receiving portion, so that the protection plate can be assembled in the receiving portion of the battery shell and can be separated from the battery body, which plays a role of convenient disassembly and assembly. Among them, the protection plate includes an injection molded shell, a protection plate body, and a positive electrode connection portion and a negative electrode connection portion arranged on the first side of the protection plate body. The injection molded shell wraps the protection plate body and the side wall of the injection molded shell is connected to the side wall of the receiving portion, which can protect the protection plate body. The positive electrode connection portion is connected to the positive electrode of the battery cell, and the negative electrode connection portion is connected to the negative electrode of the battery cell, so that the protection plate body is electrically connected to the battery body under the action of the positive electrode connection portion and the negative electrode connection portion, so that the protection plate body can play a role of circuit protection. A conductive portion exposed to the injection molded shell is provided on the second side of the protection plate body, so that the conductive portion is used to play a conductive role under the premise that the protection plate body plays a safe protection role for the circuit, so that the battery body can play a charging or discharging effect. By adopting the above structure, a receiving portion is provided at one end of the battery casing. When the protective plate is installed in the receiving portion, the protective plate can play a circuit protection role for the charging or discharging of the battery body. When the battery cell needs to be recycled, the injection molded shell can be heated to deform it, and then the protective plate can be directly separated from the receiving portion of the battery casing. This facilitates disassembly, and the battery casing and battery cell can be recycled to avoid waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of a battery provided by an embodiment of the utility model is shown;

[0020] Figure 2 An exploded view of a battery provided by an embodiment of the utility model is shown;

[0021] Figure 3 An exploded view of a battery provided by an embodiment of the utility model from another perspective is shown;

[0022] Figure 4 An exploded view of a protection plate provided by an embodiment of the utility model is shown;

[0023] Figure 5 A schematic structural diagram of a battery body provided in an embodiment of the utility model is shown.

[0024] The above drawings include the following reference numerals:

[0025] 10. Battery body; 11. Battery shell; 12. Accommodation portion; 121. First side wall; 122. Second side wall; 123. Third side wall; 124. Bottom wall; 1241. First avoidance gap; 125. Welding gap;

[0026] 20. protection plate; 21. injection molded housing; 211. first injection molded rib plate; 212. second injection molded rib plate; 213. third injection molded rib plate; 214. fourth injection molded rib plate; 215. fifth injection molded rib plate; 2151. third avoidance notch; 216. sixth injection molded rib plate; 2161. connecting hole; 22. protection plate body; 23. positive electrode connection portion; 24. negative electrode connection portion; 25. conductive portion;

[0027] 30. Positive electrode connector;

[0028] 40. Insulating film; 41. Second avoidance gap. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] like Figures 1 to 5 As shown, an embodiment of the utility model provides a battery, which includes a battery body 10 and a protection plate 20, the battery body 10 includes a battery shell 11 and a battery cell arranged in the battery shell 11, one end of the battery shell 11 is provided with a accommodating portion 12, the protection plate 20 is detachably arranged in the accommodating portion 12, the protection plate 20 includes an injection molded shell 21, a protection plate body 22, and a positive electrode connecting portion 23 and a negative electrode connecting portion 24 arranged on a first side of the protection plate body 22, the injection molded shell 21 wraps the protection plate body 22, the side wall of the injection molded shell 21 is connected to the side wall of the accommodating portion 12, the positive electrode connecting portion 23 is connected to the positive electrode of the battery cell, the negative electrode connecting portion 24 is connected to the negative electrode of the battery cell, and a conductive portion 25 exposed from the injection molded shell 21 is provided on the second side of the protection plate body 22.

[0031] The battery provided in this embodiment includes a battery body 10 and a protective plate 20. The battery body 10 includes a battery shell 11 and a battery cell. The battery cell is arranged in the battery shell 11. A receiving portion 12 is arranged at one end of the battery shell 11. The protective plate 20 is detachably arranged in the receiving portion 12, so that the protective plate 20 can be assembled in the receiving portion 12 of the battery shell 11 and can be separated from the battery body 10, which facilitates disassembly and assembly. The protection board 20 includes an injection molded shell 21, a protection board body 22, and a positive electrode connection portion 23 and a negative electrode connection portion 24 arranged on the first side of the protection board body 22. The injection molded shell 21 wraps the protection board body 22 and the side wall of the injection molded shell 21 is connected to the side wall of the accommodating portion 12, which can protect the protection board body 22. The positive electrode connection portion 23 is connected to the positive electrode of the battery cell, and the negative electrode connection portion 24 is connected to the negative electrode of the battery cell, so that the protection board body 22 is electrically connected to the battery body 10 under the action of the positive electrode connection portion 23 and the negative electrode connection portion 24, so that the protection board body 22 can be used to protect the circuit. A conductive portion 25 exposed to the injection molded shell 21 is provided on the second side of the protection board body 22, so that the conductive portion 25 is used to conduct electricity on the premise that the protection board body 22 plays a safety role in protecting the circuit, so that the battery body 10 can play a charging or discharging effect. By adopting the above structure, a receiving portion 12 is provided at one end of the battery casing 11. When the protection plate 20 is installed in the receiving portion 12, the protection plate 20 can play a circuit protection role in the charging or discharging of the battery body 10. When the battery cell needs to be recycled, the injection molded shell 21 can be heated to deform it, and then the protection plate 20 can be directly separated from the receiving portion 12 of the battery casing 11. This is convenient for disassembly and the battery cell in the battery casing 11 can be recycled to avoid waste of resources.

[0032] It should be noted that in the present application, the injection molded shell 21 is formed by integral injection molding, and the first side of the protection plate body 22 needs to be connected to the positive electrode connection portion 23 and the negative electrode connection portion 24 first, and then the protection plate body 22 is assembled in the accommodating portion 12, and the protection plate body 22 and the battery housing 11 are placed together in the injection mold, and the size of the injection mold matches the size of the battery body 10 (the injection mold is wrapped around the outside of the battery body 10 and fits the surface of the battery body 10, and the injection mold blocks the opening of the accommodating portion 12), and an injection port is provided at a position of the injection mold close to the accommodating portion 12, and then the injection molding is performed into the accommodating portion 12 to form the injection molded shell 21. The injection molded shell 21 is formed by adopting an integral injection molding process, and the molded injection molded shell 21 is connected to the battery housing 11 at the same time, so as to achieve a fixing effect, so that the injection molded shell 21 can completely wrap the protection plate 20, thereby protecting the protection plate 20.

[0033] In this embodiment, the positive electrode connecting portion 23 is a positive electrode connecting sheet, and the negative electrode connecting portion 24 is a negative electrode connecting sheet.

[0034] like Figure 1 , Figure 2 , Figure 3 as well as Figure 5 As shown, the receiving portion 12 includes a first side wall 121, a second side wall 122, a third side wall 123 and a bottom wall 124. The first side wall 121 is arranged opposite to the third side wall 123, the second side wall 122 is located between the first side wall 121 and the third side wall 123, and the bottom wall 124 is arranged at the bottom of the first side wall 121, the second side wall 122 and the third side wall 123. The tops of the first side wall 121, the second side wall 122 and the third side wall 123 form an opening for installing the protection plate 20. With the above structure, the receiving portion 12 is formed by the first side wall 121, the second side wall 122, the third side wall 123 and the bottom wall 124, and the tops of the first side wall 121, the second side wall 122 and the third side wall 123 form an opening. The protection plate 20 is detachably arranged in the receiving portion 12 through the opening, so that the protection plate 20 is conveniently connected or separated from the battery body 10.

[0035] It should be noted that by setting the bottom wall 124 of the accommodating portion 12 towards the direction close to the battery cell, the first side wall 121, the second side wall 122, the third side wall 123 and the bottom wall 124 of the accommodating portion 12 form a accommodating groove. When the protective plate 20 is installed in the accommodating portion 12, the injection molded shell 21 of the protective plate 20 is adapted to the opening, so that the upper surface of the injection molded shell 21 is flush with the end of the battery casing 11, thereby preventing the protective plate 20 from protruding from the battery casing 11, ensuring the structural stability of the battery, and facilitating the assembly of the battery.

[0036] Among them, the top and bottom are for Figures 1 to 5 In terms of the placement direction of the battery, when the battery changes its placement direction, the positions of the top and bottom need to be adjusted according to the placement direction of the battery.

[0037] like Figure 2 and Figure 5 As shown, a first avoidance notch 1241 for avoiding the positive electrode of the battery cell is provided on the bottom wall 124. With the above structure, the positive electrode connection part 23 on the protection board body 22 can extend into the battery housing 11 through the first avoidance notch 1241, so that the positive electrode connection part 23 is connected to the positive electrode of the battery cell, ensuring that the battery cell of the battery body 10 can be electrically connected to the protection board body 22, thereby playing a role in protecting the circuit.

[0038] like Figure 2 and Figure 3As shown, the battery further includes a positive electrode connector 30, and the connection end of the positive electrode connector 23 is connected to the positive electrode of the battery cell through the positive electrode connector 30, and the positive electrode connector 30 is inserted into the first avoidance gap 1241. With the above structure, by providing the positive electrode connector 30, the positive electrode connector 30 is inserted into the first avoidance gap 1241, and the positive electrode connector 23 is connected and fixed to the positive electrode connector 30, so that under the action of the positive electrode connector 30, the positive electrode connector 23 on the protection plate body 22 is electrically connected to the positive electrode of the battery cell.

[0039] It should be noted that the positive electrode connector 30 is passed through the first avoidance notch 1241 of the bottom wall 124, and the positive electrode connector 30 is sealed and fixed to the side wall of the first avoidance notch 1241. This can prevent the injection material from entering the battery casing 11 through the first avoidance notch 1241 on the bottom wall 124 during one-piece injection molding, thereby ensuring that the positive electrode connector 30 can play both an electrical connection role and a sealing role for the battery body 10.

[0040] In this embodiment, the positive electrode connector 30 includes a positive electrode connecting post.

[0041] In this embodiment, the battery housing 11 is made of metal material, the outer wall of the battery housing 11 is covered with an insulating layer, the negative electrode of the battery cell is connected to the bottom wall 124, and the connecting end of the negative electrode connecting part 24 is connected to the bottom wall 124. With the above structure, the battery housing 11 is made of metal material, which is convenient for electrically connecting the protection board body 22 to the battery housing 11. It only needs to connect the negative electrode of the battery cell to the bottom wall 124, and directly connect the connecting end of the negative electrode connecting part 24 to the bottom wall 124 to play a conductive role. There is no need to set up other structures for connection, ensuring that the connection structure is simple. In addition, an insulating layer is provided on the outer wall of the battery housing 11, which can insulate the terminal after the battery body 10 and the protection board 20 are assembled, avoiding the battery housing 11 from being directly connected to other circuit structures and affecting the stability of the terminal device.

[0042] It should be noted that the outer side wall of the battery case 11 is the area of ​​the battery case 11 excluding the first side wall 121 , the second side wall 122 , the third side wall 123 and the bottom wall 124 .

[0043] In this embodiment, the battery housing 11 is made of steel.

[0044] like Figure 2 and Figure 3As shown, the battery further includes an insulating film 40, which is disposed between the first side wall 121, the second side wall 122, the third side wall 123 and the bottom wall 124 and the injection molded shell 21, and the insulating film 40 has a second avoidance notch 41 for avoiding the connection end of the negative electrode connecting portion 24. With the above structure, by disposing the insulating film 40 between the first side wall 121, the second side wall 122, the third side wall 123 and the bottom wall 124 and the injection molded shell 21, the protective plate 20 and the battery body 10 can be insulated.

[0045] like Figure 2 , Figure 3 as well as Figure 5 As shown, a welding notch 125 for welding the connection end of the positive electrode connection part 23 and the positive electrode of the battery cell and the connection end of the negative electrode connection part 24 and the negative electrode of the battery cell is formed on one side of the accommodating part 12 corresponding to the second side wall 122. With the above structure, when the protective plate body 22 is assembled in the accommodating part 12, the positive electrode connection part 23 fits with the positive electrode of the battery cell, and the negative electrode connection part 24 fits with the negative electrode of the battery cell. In order to ensure the stability of the connection structure between the protective plate body 22 and the battery shell 11, by setting the welding notch 125, a welding tool is inserted into the welding notch 125 to directly weld and fix the connection end of the positive electrode connection part 23 and the connection end of the negative electrode connection part 24, so as to ensure the firmness of the connection structure between the protective plate body 22 and the battery shell 11.

[0046] In this embodiment, the first side wall 121 and the bottom wall 124 have a first right angle or a first obtuse angle, the third side wall 123 and the bottom wall 124 have a second right angle or a second obtuse angle, and the end surface of the injection molded housing 21 matches the first side wall 121 and the third side wall 123. With the above structure, the first side wall 121 and the third side wall 123 are respectively matched with the end surface of the injection molded housing 21, so that when the protective plate 20 is disassembled from the battery body 10, the first side wall 121 and the third side wall 123 play a role of sliding guide, which is convenient for separation, thereby ensuring that the battery body 10 can be recycled.

[0047] It should be noted that, in a preferred embodiment, the angle between the first side wall 121 and the bottom wall 124 is a first obtuse angle, the angle between the third side wall 123 and the bottom wall 124 is a second obtuse angle, and the two end faces of the injection-molded shell 21 are guide slopes, so that the two end faces of the injection-molded shell 21 respectively act as sliding guides with the first side wall 121 and the third side wall 123, thereby facilitating the disassembly of the protective plate 20.

[0048] like Figures 2 to 4As shown, the battery housing 11 includes a first injection molded rib 211, a second injection molded rib 212, a third injection molded rib 213, a fourth injection molded rib 214, a fifth injection molded rib 215 and a sixth injection molded rib 216. The first injection molded rib 211 is fitted with the first side wall 121, the second injection molded rib 212 is fitted with the second side wall 122, the third injection molded rib 213 is fitted with the third side wall 123, the sixth injection molded rib 216 is fitted with the bottom wall 124, the sixth injection molded rib 216 is provided with a connecting hole 2161 for avoiding the positive electrode connector 30, and the fifth injection molded rib 215 is provided with a third avoidance gap 2151 for avoiding the conductive part 25. With the above structure, by providing the first injection rib 211, the second injection rib 212, the third injection rib 213, the fourth injection rib 214, the fifth injection rib 215 and the sixth injection rib 216, the battery housing 11 can be matched with the accommodating portion 12, and the sixth injection rib 216 can avoid the positive electrode connector 30 by providing the connecting hole 2161, so that the positive electrode connector 23 can be electrically connected to the positive electrode connector 30. And the third avoidance notch 2151 on the fifth injection rib 215 can avoid the conductive portion 25, so that the battery can be charged or discharged through the conductive portion 25.

[0049] In this embodiment, the conductive part 25 includes a conductive copper foil disposed on the protection plate body 22. The conductive copper foil can improve the conductive efficiency and facilitate the transmission of electrical signals.

[0050] In this embodiment, an explosion-proof structure is provided on the outer wall of the battery housing 11. With the above structure, the explosion-proof structure on the battery housing 11 can prevent the battery body 10 from exploding, thereby improving the structural reliability of the battery body 10.

[0051] In this embodiment, the explosion-proof structure includes an arc-shaped groove provided on the outer surface of the battery housing 11 .

[0052] It should be noted that the protection board body 22 is provided with an electrical control element for controlling the conduction of the circuit.

[0053] Another embodiment of the utility model provides a terminal, including a battery, wherein the battery is the battery provided above. With the above structure, the battery can be used to charge or discharge the terminal, ensuring that the terminal can be used for a long time, and the battery body 10 in the battery can be disassembled and recycled to avoid waste of resources.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0056] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0057] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0059] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery, characterized in that: The battery comprises: A battery body (10) comprises a battery casing (11) and a battery cell arranged in the battery casing (11), wherein a receiving portion (12) is arranged at one end of the battery casing (11); A protection plate (20) is detachably arranged in the accommodating portion (12), the protection plate (20) comprising an injection molded shell (21), a protection plate body (22), and a positive electrode connecting portion (23) and a negative electrode connecting portion (24) arranged on a first side of the protection plate body (22), the injection molded shell (21) wraps the protection plate body (22), the side wall of the injection molded shell (21) is connected to the side wall of the accommodating portion (12), the positive electrode connecting portion (23) is connected to the positive electrode of the battery cell, the negative electrode connecting portion (24) is connected to the negative electrode of the battery cell, and a conductive portion (25) exposed from the injection molded shell (21) is arranged on the second side of the protection plate body (22).

2. The battery according to claim 1, characterized in that The accommodating portion (12) comprises a first side wall (121), a second side wall (122), a third side wall (123) and a bottom wall (124); the first side wall (121) and the third side wall (123) are arranged opposite to each other; the second side wall (122) is located between the first side wall (121) and the third side wall (123); the bottom wall (124) is arranged at the bottom of the first side wall (121), the second side wall (122) and the third side wall (123); and the tops of the first side wall (121), the second side wall (122) and the third side wall (123) form an opening for installing the protective plate (20); The bottom wall (124) is provided with a first avoidance notch (1241) for avoiding the positive electrode of the battery cell.

3. The battery according to claim 2, characterized in that The battery further comprises a positive electrode connector (30), the connection end of the positive electrode connector (23) being connected to the positive electrode of the battery cell via the positive electrode connector (30), and the positive electrode connector (30) being inserted into the first avoidance notch (1241).

4. The battery according to claim 3, characterized in that The battery housing (11) is made of metal material, the outer wall of the battery housing (11) is covered with an insulating layer, the negative electrode of the battery cell is connected to the bottom wall (124), and the connection end of the negative electrode connecting part (24) is connected to the bottom wall (124).

5. The battery according to claim 4, characterized in that The battery further comprises an insulating film (40), wherein the insulating film (40) is arranged between the first side wall (121), the second side wall (122), the third side wall (123), and the bottom wall (124) and the injection molded housing (21), and the insulating film (40) has a second avoidance notch (41) for avoiding the connection end of the negative electrode connecting portion (24).

6. The battery according to claim 3, characterized in that The accommodating portion (12) is formed with a welding notch (125) on one side corresponding to the second side wall (122) for welding the connection end of the positive electrode connection portion (23) and the positive electrode of the battery cell and the connection end of the negative electrode connection portion (24) and the negative electrode of the battery cell.

7. The battery according to claim 3, characterized in that A first right angle or a first obtuse angle is formed between the first side wall (121) and the bottom wall (124), a second right angle or a second obtuse angle is formed between the third side wall (123) and the bottom wall (124), and an end surface of the injection-molded housing (21) cooperates with the first side wall (121) and the third side wall (123).

8. The battery according to claim 3, characterized in that The injection molded housing (21) comprises a first injection molded rib plate (211), a second injection molded rib plate (212), a third injection molded rib plate (213), a fourth injection molded rib plate (214), a fifth injection molded rib plate (215) and a sixth injection molded rib plate (216); the first injection molded rib plate (211) is in contact with the first side wall (121); the second injection molded rib plate (212) is in contact with the second side wall (122); the third injection molded rib plate (213) is in contact with the third side wall (123); the sixth injection molded rib plate (216) is in contact with the bottom wall (124); the sixth injection molded rib plate (216) is provided with a connecting hole (2161) for avoiding the positive electrode connector (30); and the fifth injection molded rib plate (215) is provided with a third avoidance notch (2151) for avoiding the conductive portion (25).

9. The battery according to claim 1, characterized in that The conductive part (25) comprises a conductive copper foil arranged on the protection plate body (22).

10. The battery according to claim 1, characterized in that An explosion-proof structure is provided on the outer side wall of the battery housing (11).

11. A terminal, comprising a battery, characterized in that: The battery is the battery according to any one of claims 1 to 10.

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