Battery and terminal equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a battery and terminal equipment, and the battery comprises a protective shell, a naked battery cell, a protective circuit assembly and a first sealing element, the interior of the protective shell is divided into a first mounting cavity and a second mounting cavity which are communicated through an assembly hole, and a connecting hole is formed in the outer wall of the protective shell; the protection circuit assembly is arranged in the first mounting cavity, and a first connecting part of the protection circuit assembly is electrically connected with an external component through the connecting hole; the naked battery cell is arranged in the second mounting cavity and is provided with a pole; the pole penetrates through the assembly hole and is electrically connected with the second connecting part of the protection circuit assembly; the protective shell disclosed by the utility model can be used for protecting the naked battery core and the protective circuit assembly, so that the risk that the protective circuit assembly is damaged due to collision with external parts is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technical field, concretely relates to battery and terminal equipment. BACKGROUND

[0002] The protection circuit module (PCM) is an important component in the battery structure of electronic products, especially for lithium battery structures of mobile electronic products (including smart phones, notebook computers and electric vehicles). The main function of the protection circuit module is to prevent the battery from running outside its safe operating area, which includes safety against overcharging, over-discharging, overcharging and extreme temperatures.

[0003] At present, the protection circuit module of the existing battery is usually placed on one side outside the battery cell, and the protection circuit module is fixedly assembled with the battery cell by double-sided adhesive tape or injection molding. Since the protection circuit module and the battery cell are usually installed together in the battery compartment of the terminal equipment, this arrangement is prone to direct contact between the protection circuit module and the battery compartment. In the long-term use process, the protection circuit module is prone to collision with the battery compartment or the battery cell, causing damage. Therefore, the existing battery protection circuit module arrangement has the problem of poor reliability. SUMMARY

[0004] Therefore, the utility model provides a kind of battery and terminal equipment to solve the problem of poor reliability of the existing battery protection circuit module arrangement.

[0005] In a first aspect, the utility model provides a kind of battery, comprising: protective shell, bare battery cell and protection circuit component;The first installation cavity and the second installation cavity are formed in the protective shell, and the first installation cavity and the second installation cavity are communicated by assembly hole, and the outer wall of the protective shell is provided with the connecting hole being communicated with the first installation cavity;Protection circuit component is set in the first installation cavity, and protection circuit component has first connecting part and second connecting part, and first connecting part is exposed in connecting hole, for realizing electrical connection with external component;Bare battery cell is set in the second installation cavity and has pole, and at least a part of pole is electrically connected with second connecting part through assembly hole.

[0006] Beneficial effects: bare battery cell and protection circuit component are respectively arranged in corresponding installation cavity, and protective shell can protect bare battery cell and protection circuit component simultaneously, greatly reduce the risk of collision between protection circuit component and external component, such as battery compartment, and damage, effectively solve the problem of poor reliability of the existing battery protection circuit module arrangement.

[0007] In an alternative embodiment, the protective shell is a metal member, the number of pole of the bare battery cell is two, which are first pole and second pole, the first pole is arranged in the assembly hole, the second pole is electrically connected with the protective shell, and the second connecting part is electrically connected with the first pole and the protective shell respectively.

[0008] Beneficial effects: the protective shell is a metal component, which can significantly improve the puncture resistance and mechanical reliability of the battery compared with the conventional soft package solution, and the protective shell has higher structural strength and is less likely to be deformed when the battery is subjected to external impact.

[0009] In an alternative embodiment, the first pole is a positive pole, the second pole is a negative pole, the second connecting part includes a second positive pole end and a second negative pole end, the first pole is electrically connected to the second positive pole end, and the second negative pole end is electrically connected to the protective shell.

[0010] Beneficial effects: the connection mode of the bare battery cell and the protection circuit assembly is simple and reliable.

[0011] In an alternative embodiment, the outer wall of the protective shell has two spaced-apart connecting holes, the first connecting part includes a first connecting column and a second connecting column, the first connecting column is arranged in one of the connecting holes, and the second connecting column is arranged in the other connecting hole.

[0012] Beneficial effects: this form of first connecting part can be connected to the positive and negative poles of the external component through its two connecting columns, and the structure is simple and reliable.

[0013] In an alternative embodiment, the outer wall of the protective shell has one connecting hole, and the first connecting part is a gold finger arranged in the connecting hole.

[0014] Beneficial effects: this form of first connecting part is easy to manufacture, and the external connection function can be realized through a single connecting hole, which can effectively reduce the number of connecting holes and the manufacturing difficulty.

[0015] In an alternative embodiment, the battery further includes a first sealing member arranged between the pole and the assembly hole to seal the assembly hole, and / or the battery further includes a second sealing member arranged between the first connecting part and the connecting hole to seal the connecting hole.

[0016] Beneficial effects: in addition, since the second installation cavity where the bare battery cell is located usually needs to be filled with electrolyte, the first sealing member can effectively seal the assembly hole after the bare battery cell and the protection circuit assembly are connected through the assembly hole, which can more reliably isolate the first installation cavity and the second installation cavity, prevent the electrolyte from contacting the protection circuit assembly, and / or the second sealing member can further improve the sealing performance of the connecting hole to prevent foreign matter from entering the first installation cavity, and the structure is simple and effective.

[0017] In an alternative embodiment, the battery further includes a third sealing member, the outer wall of the protective shell is provided with a liquid injection hole communicating with the second installation cavity, and the third sealing member is detachably arranged in the liquid injection hole to seal the liquid injection hole.

[0018] Beneficial effects: the liquid injection hole is convenient for injecting electrolyte into the second mounting cavity, and the third sealing member can effectively block the liquid injection hole to avoid leakage at the liquid injection hole.

[0019] In an alternative embodiment, the protective shell comprises a main body, a cover plate and a partition plate, the main body and the cover plate enclose a containing cavity, the partition plate is arranged in the containing cavity and separates the containing cavity into a first mounting cavity and a second mounting cavity, the assembly hole is arranged on the partition plate, and the connecting hole is arranged on the main body.

[0020] Beneficial effects: the protective shell of this form is simple in structure and convenient to assemble and manufacture.

[0021] In an alternative embodiment, the battery has a first direction, a second direction and a third direction intersecting with each other, the first mounting cavity and the second mounting cavity are arranged apart along the first direction, the connecting hole is arranged at one end of the protective shell in the first direction, the battery comprises a side edge insulating member arranged at the other end of the protective shell in the first direction; and / or, the battery comprises a side surface insulating member, the side surface insulating member comprises a flat section and a bent section, the flat section is provided with the bent section on both sides along the second direction, the flat section is connected with one side surface of the battery cell in the third direction, and the bent section extends along the surface of the battery and is connected with the other side surface of the battery in the third direction.

[0022] Beneficial effects: when the protective shell is arranged with the side edge insulating member and assembled, direct contact of the other end of the protective shell in the first direction with the terminal device can be effectively prevented, and the side surface insulating member can further improve the insulation performance of the outer part of the battery.

[0023] In a second aspect, the utility model also provides a terminal device, it includes: fuselage, has installation site;The battery described above is arranged in installation site and is connected with fuselage. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in prior art, the following will briefly introduce the drawing needed to be used in the specific embodiment or prior art description, obviously, the drawing in the following description is some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, other drawings can also be obtained according to these drawings.

[0025] Figure 1 It is the explosion schematic view of the first connecting part of the battery of the utility model embodiment for gold finger;

[0026] Figure 2 It is the explosion schematic view of the protective circuit assembly when the first connecting part of the battery of the utility model embodiment is the first connecting column and the second connecting column;

[0027] Figure 3 for Figure 1 A three-dimensional schematic diagram of the main body of the battery shown;

[0028] Figure 4 for Figure 1 The diagram shown is a three-dimensional representation of the assembled battery.

[0029] Figure 5 for Figure 4 The diagram shows a battery explosion.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Protective shell; 101. First mounting cavity; 102. Second mounting cavity; 103. Assembly hole; 104. Connection hole; 105. Injection hole; 106. Main body; 107. Cover plate; 108. Partition plate;

[0032] 2. Bare battery cell; 201. Terminal post;

[0033] 3. Protection circuit assembly; 301, First connecting part; 3011, First connecting post; 3012, Second connecting post; 3013, Gold finger; 302, Second connecting part; 303, Protection board;

[0034] 4. First sealing element; 5. Second sealing element; 6. Third sealing element; 7. Side insulation element; 8. Side insulation element; 801. Flat section; 802. Bending section; 9. Adhesive tape;

[0035] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] The following is combined with Figures 1 to 5 The following describes embodiments of the present invention.

[0038] According to the embodiment of the utility model, on the one hand, a battery is provided, comprising: a protective shell 1, a bare cell 2 and a protection circuit component 3;The first installation cavity 101 and the second installation cavity 102 are formed in the protective shell 1, and the first installation cavity 101 and the second installation cavity 102 are communicated by the assembly hole 103, and the outer wall of the protective shell 1 is provided with the connecting hole 104 communicated with the first installation cavity 101;The protection circuit component 3 is arranged in the first installation cavity 101, and the protection circuit component 3 has the first connecting part 301 and the second connecting part 302, and the first connecting part 301 is exposed to the connecting hole 104 and is used for electrically connecting with external components;The bare cell 2 is arranged in the second installation cavity 102 and has the pole 201, and at least a part of the pole 201 is electrically connected with the second connecting part 302 through the assembly hole 103.

[0039] The battery of the embodiment is arranged with the bare cell 2 and the protection circuit component 3 in the corresponding installation cavity respectively, the protective shell 1 can protect the bare cell 2 and the protection circuit component 3 simultaneously, the risk of damage caused by the collision between the protection circuit component 3 and external components is greatly reduced, and the problem of poor reliability of the existing battery protection circuit module arrangement mode is effectively solved.

[0040] Specifically, since the protection circuit component 3 is arranged in the interior of the protective shell 1, the overall size of the battery of this form mainly depends on the size of the protective shell 1, and therefore the size consistency of the battery can be effectively improved.

[0041] In addition, since the protection circuit component 3 is arranged in the interior of the protective shell 1, the protection circuit component 3 battery can be assembled together with the assembly process of the battery, compared with the protection circuit component 3 arranged outside the protective shell 1 in the related art, the battery can be directly assembled with the electric equipment without separately assembling the protection circuit component 3, therefore, the battery of the embodiment can also effectively reduce the assembly steps and improve the disassembly convenience.

[0042] In a possible implementation, the protective shell 1 is a metal member, the number of the poles 201 of the bare cell 2 is two, which are a first pole and a second pole, the first pole is arranged in the assembly hole 103, the second pole is electrically connected with the protective shell 1, and the second connecting part 302 is electrically connected with the first pole and the protective shell 1 respectively, the protective shell 1 is a metal member, compared with the conventional soft package scheme, the puncture resistance and mechanical reliability of the battery can be significantly improved, the structural strength of the protective shell 1 is higher, the protective shell 1 is not easy to deform when the battery is subjected to external impact, in addition, since the protective shell 1 can conduct electricity, the protective shell 1 can directly serve as a connecting piece to connect one of the poles of the bare cell 2 with the second connecting part 302, the number of components is reduced, and the structure of the bare cell 2 is simplified.

[0043] The specific material of the protective shell 1 is not limited, and can be a steel member, an aluminum member, or the like, as long as the strength requirement is met.

[0044] Preferably, the protective shell 1 is a steel member.

[0045] Further, the second pole is welded to the protective shell 1, and the second connecting part 302 is welded to the first pole and the protective shell 1, respectively.

[0046] In a possible implementation, the first pole is a positive pole, the second pole is a negative pole, the second connecting part 302 includes a second positive terminal and a second negative terminal, the first pole is electrically connected to the second positive terminal, and the second negative terminal is electrically connected to the protective shell 1. The second negative terminal is electrically connected to the protective shell 1, and the connection mode of the bare battery cell 2 and the protection circuit module 3 is simple and reliable.

[0047] It can be understood that, as an alternative implementation, the first pole can be electrically connected to the second negative terminal, and the second positive terminal can be electrically connected to the protective shell 1.

[0048] Further, as shown in Figure 1 and Figure 2 , the protection circuit module 3 further includes a protection plate 303, and the first connecting part 301 and the second connecting part 302 are arranged on the two opposite end faces of the protection plate 303, respectively.

[0049] In a possible implementation, as shown in Figure 2 , the outer wall of the protective shell 1 has two spaced-apart connecting holes 104, the first connecting part 301 includes a first connecting column 3011 and a second connecting column 3012, the first connecting column 3011 is arranged in one of the connecting holes 104, and the second connecting column 3012 is arranged in the other connecting hole 104. In this form, the first connecting part 301 can be connected to the positive and negative poles of the external component through its two connecting columns, and the structure is simple and reliable.

[0050] Specifically, as shown in Figure 2 , one of the first connecting column 3011 and the second connecting column 3012 is a positive connecting column, and the other is a negative connecting column.

[0051] In a possible implementation, as shown in Figure 1 , the outer wall of the protective shell 1 has one connecting hole 104, and the first connecting part 301 is a gold finger 3013, which is arranged in the connecting hole 104. This form of the first connecting part 301 is convenient to manufacture, and can realize the external connection function through a single connecting hole 104, which can effectively reduce the number of connecting holes 104 and reduce the manufacturing difficulty.

[0052] In one possible implementation, the battery further includes a first seal 4, which is disposed between the terminal post 201 and the mounting hole 103 to seal the mounting hole 103. Since the second mounting cavity 102 where the bare cell 2 is located usually needs to be filled with electrolyte, after the bare cell 2 and the protection circuit assembly 3 can be connected through the mounting hole 103, the first seal 4 can effectively seal the mounting hole 103, which can more reliably isolate the first mounting cavity 101 and the second mounting cavity 102, preventing the electrolyte from contacting the protection circuit assembly 3.

[0053] In one possible implementation, the battery further includes a second seal 5, which is disposed between the first connecting portion 301 and the connecting hole 104 to seal the connecting hole 104. The second seal 5 can further improve the sealing performance of the connecting hole 104 and prevent foreign objects from entering the first mounting cavity 101. The structure is simple and effective.

[0054] Among them, such as Figure 2 As shown, when the first connecting part 301 includes a first connecting post 3011 and a second connecting post 3012, there are two connecting holes 104. One connecting hole 104 is for the first connecting post 3011 to pass through, and the other connecting hole 104 is for the second connecting post 3012 to pass through. The first connecting post 3011 and the second connecting post 3012 are respectively sealed and fitted with the corresponding connecting hole 104 through the second sealing member 5.

[0055] In addition, such as Figure 1 As shown, when the first connecting part 301 is a gold finger 3013, the number of connecting holes 104 is one. Each connecting end of the gold finger 3013 is provided with an opening in the connecting hole 104. The first connecting part 301 is sealed with the connecting hole 104 through the second sealing member 5.

[0056] In one possible implementation, the battery further includes a third seal 6. The outer wall of the protective shell 1 is provided with an injection hole 105 communicating with the second mounting cavity 102. The third seal 6 is detachably disposed in the injection hole 105 to seal the injection hole 105. The injection hole 105 facilitates the injection of electrolyte into the second mounting cavity 102. The third seal 6 can effectively seal the injection hole 105 to prevent leakage at the injection hole 105.

[0057] It should be noted that the third sealing element 6 is a sealing plug. Both the sealing plug and the protective shell 1 are metal components, and the two are welded together.

[0058] In a possible implementation, the protective shell 1 comprises a main body 106, a cover plate 107, and a partition plate 108, the main body 106 and the cover plate 107 jointly form a containing cavity, the partition plate 108 is arranged in the containing cavity and separates the containing cavity into a first mounting cavity 101 and a second mounting cavity 102, the assembly hole 103 is arranged on the partition plate 108, and the connecting hole 104 is arranged on the main body 106. In this form, the protective shell 1 is simple in structure and convenient to assemble and manufacture.

[0059] It can be understood that, as an alternative implementation, the protective shell 1 can also be composed of a top cover, a middle frame, and a bottom cover; and the assembly hole 103 can also be arranged on the cover plate 107.

[0060] It should be noted that the forming mode of the main body 106, the cover plate 107, and the partition plate 108 is not limited, which can be formed by punching and cutting, or can be formed by bending and welding, and can be flexibly selected according to manufacturing convenience.

[0061] Specifically, as shown in Figure 1 and Figure 3 , the cover plate 107 is a plate structure, the main body 106 has a mounting groove corresponding to the positions of the first mounting cavity 101 and the second mounting cavity 102, the cover plate 107 is covered on one side of the main body 106 having the mounting groove, and the first mounting cavity 101 and the second mounting cavity 102 are formed after the mounting groove is closed.

[0062] In a possible implementation, as shown in Figure 4 and Figure 5 , the battery has a first direction X, a second direction Y, and a third direction Z intersecting with each other, the first mounting cavity 101 and the second mounting cavity 102 are arranged at intervals along the first direction X, the connecting hole 104 is arranged at one end of the protective shell 1 in the first direction X, and the battery comprises a side edge insulating piece 7 arranged at the other end of the protective shell 1 in the first direction X. When the protective shell 1 is arranged and assembled with the side edge insulating piece 7, the other end of the protective shell 1 in the first direction X can be effectively prevented from directly contacting the terminal device.

[0063] In a possible implementation, as shown in Figure 4 and Figure 5 , the first mounting cavity 101 and the second mounting cavity 102 are arranged at intervals along the first direction X, the battery comprises a side surface insulating piece 8, the side surface insulating piece 8 comprises a planar section 801 and a bent section 802, the bent section 802 is arranged on both sides of the planar section 801 along the second direction Y, the planar section 801 is connected to one side surface of the battery cell in the third direction Z, and the bent section 802 extends along the surface of the battery and is connected to the other side surface of the battery in the third direction Z. The side surface insulating piece 8 can further improve the insulation performance of the outside of the battery.

[0064] Specifically, the side insulation 7 and the side insulation 8 are both adhesive sheet insulations.

[0065] In a possible implementation, the battery further comprises a gummed paper 9, the gummed paper 9 is attached to the surface of the flat section 801, and the side insulation 8 is connected to the body of the terminal device through the gummed paper 9.

[0066] According to the embodiments of the present application, on the other hand, a terminal device is provided, which comprises: a body and the above-mentioned battery, the body has a mounting position; and the battery is arranged at the mounting position and connected with the body.

[0067] The terminal device comprises a mobile phone, a tablet computer, a notebook computer and the like.

[0068] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A battery, characterized in that, include: Protective casing (1), bare battery cell (2), and protection circuit assembly (3); The protective shell (1) is divided into a first mounting cavity (101) and a second mounting cavity (102). The first mounting cavity (101) and the second mounting cavity (102) are connected by an assembly hole (103). The outer wall of the protective shell (1) is provided with a connection hole (104) that communicates with the first mounting cavity (101). The protection circuit assembly (3) is disposed in the first mounting cavity (101). The protection circuit assembly (3) has a first connecting part (301) and a second connecting part (302). The first connecting part (301) is exposed in the connecting hole (104) for electrical connection with external components. The bare battery cell (2) is disposed in the second mounting cavity (102) and has a terminal post (201), at least a portion of the terminal post (201) passing through the mounting hole (103) and electrically connected to the second connecting portion (302).

2. The battery according to claim 1, characterized in that, The protective shell (1) is a metal component. The bare battery cell (2) has two terminals (201), namely the first terminal and the second terminal. The first terminal passes through the assembly hole (103), and the second terminal is electrically connected to the protective shell (1). The second connection part (302) is electrically connected to the first terminal and the protective shell (1) respectively.

3. The battery according to claim 2, characterized in that, The first terminal is a positive terminal, the second terminal is a negative terminal, and the second connection part (302) includes a second positive terminal and a second negative terminal. The first terminal is electrically connected to the second positive terminal, and the second negative terminal is electrically connected to the protective shell (1).

4. The battery according to any one of claims 1 to 3, characterized in that, The outer wall of the protective shell (1) has two spaced-apart connection holes (104). The first connection part (301) includes a first connection post (3011) and a second connection post (3012). The first connection post (3011) passes through one of the connection holes (104), and the second connection post (3012) passes through the other connection hole (104).

5. The battery according to any one of claims 1 to 3, characterized in that, The outer wall of the protective shell (1) has a connection hole (104), and the first connection part (301) is a gold finger (3013), which passes through the connection hole (104).

6. The battery according to any one of claims 1 to 3, characterized in that, The battery also includes a first sealing element (4), which is disposed between the terminal post (201) and the assembly hole (103) to seal the assembly hole (103); And / or, the battery further includes a second seal (5) disposed between the first connection portion (301) and the connection hole (104) to seal the connection hole (104).

7. The battery according to any one of claims 1 to 3, characterized in that, The battery also includes a third sealing element (6). The outer wall of the protective shell (1) is provided with a liquid injection hole (105) communicating with the second mounting cavity (102). The third sealing element (6) is detachably disposed in the liquid injection hole (105) to block the liquid injection hole (105).

8. The battery according to any one of claims 1 to 3, characterized in that, The protective shell (1) includes a main body (106), a cover plate (107), and a partition plate (108). The main body (106) and the cover plate (107) together form a receiving cavity. The partition plate (108) is disposed in the receiving cavity and divides the receiving cavity into a first mounting cavity (101) and a second mounting cavity (102). The assembly hole (103) is disposed in the partition plate (108), and the connection hole (104) is disposed in the main body (106).

9. The battery according to claim 2 or 3, characterized in that, The battery has a first direction (X), a second direction (Y) and a third direction (Z) that intersect each other. The first mounting cavity (101) and the second mounting cavity (102) are spaced apart along the first direction (X). The connecting hole (104) is located at one end of the protective shell (1) in the first direction (X). And / or, the battery includes a side insulator (7) disposed at the other end of the protective shell (1) in the first direction (X); And / or, the battery includes a side insulator (8), the side insulator (8) including a planar segment (801) and a bent segment (802), the planar segment (801) having the bent segment (802) on both sides along the second direction (Y), the planar segment (801) being connected to one side of the cell in the third direction (Z), and the bent segment (802) extending along the surface of the battery and being connected to the other side of the battery in the third direction (Z).

10. A terminal device, characterized in that, include: The fuselage has mounting positions; The battery according to any one of claims 1 to 9 is disposed in the mounting position and connected to the body.

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