Battery and electronic equipment

Abstract

The utility model discloses a battery and electronic equipment. The battery comprises a shell which is provided with an inner cavity, and the inner cavity is suitable for accommodating a battery cell; and the circuit board assembly comprises a PCB and an injection molding part, the PCB is packaged in the injection molding part, the circuit board assembly is installed in the inner cavity, and the PCB is electrically connected with the battery cell. The PCB is packaged in the injection molding part, the PCB is installed in the shell through the injection molding part, assembling is convenient, and the assembling stability and reliability can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, and more particularly, to a battery and an electronic device. BACKGROUND

[0002] In the related art, the circuit board in the battery is generally used to connect the positive and negative poles of the battery cell and the external lead wire. At present, the circuit board is generally pasted in the inside of the battery shell through a pasting adhesive process, which is relatively inconvenient to operate.

[0003] Therefore, there is a need to provide a new technical solution to solve the above technical problems. SUMMARY

[0004] An object of the present application is to provide a new technical solution for a battery.

[0005] According to a first aspect of the present application, a battery is provided. The battery comprises:

[0006] a shell having an inner cavity, the inner cavity being adapted to accommodate a battery cell;

[0007] a circuit board assembly comprising a PCB board and an injection molding part, the PCB board being encapsulated in the injection molding part, the circuit board assembly being installed in the inner cavity, and the PCB board being electrically connected to the battery cell.

[0008] Optionally, the circuit board assembly is formed by low-pressure injection molding.

[0009] Optionally, the shell comprises a first shell and a second shell, the first shell being provided with a groove, and the second shell being capable of being arranged on the open end of the groove to form the inner cavity.

[0010] Optionally, the first shell and the second shell are screwed by fasteners.

[0011] Optionally, the first shell is provided with a first connecting part at each opposite end, the second shell is provided with a second connecting part at each end, and the fasteners are capable of being sequentially connected to the first connecting part and the second connecting part.

[0012] Optionally, the battery further comprises a lead wire, the lead wire being electrically connected to the PCB board, and a side wall of the groove being provided with a clearance for avoiding the lead wire.

[0013] Optionally, the lead wire comprises a first connecting end, the first connecting end being electrically connected to the PCB board, and the first connecting end being encapsulated in the injection molding part by low-pressure injection molding.

[0014] Optionally, the battery further comprises a first adhesive paper, the first adhesive paper being pasted on the outer surface of the battery cell.

[0015] Optionally, the battery further comprises a second adhesive paper, which is bonded to the outer surface of the shell.

[0016] According to a second aspect of the present application, an electronic device is provided. The electronic device comprises the battery as described in the above embodiments.

[0017] One technical effect of the present application is that the shell has an inner cavity, the battery cell is accommodated in the inner cavity, the circuit board assembly comprises a PCB board and an injection molding part, the PCB board is encapsulated in the injection molding part, the circuit board assembly is installed in the inner cavity, and the PCB board is electrically connected with the battery cell. The PCB board is encapsulated in the injection molding part, the PCB board is installed in the shell through the injection molding part, assembly is facilitated, and the stability and reliability of the assembly can be improved.

[0018] Other features of the present application, which are believed to be advantageous, will become apparent from the following detailed description of example embodiments of the application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

[0020] Figure 1 is a structural exploded schematic view of a battery according to an embodiment of the present application.

[0021] Figure 2 is a structural schematic view of a battery according to an embodiment of the present application.

[0022] Figure 3 is a structural schematic view of a battery according to an embodiment of the present application.

[0023] REFERENCE NUMERALS:

[0024] 1, shell; 11, first housing; 111, first connecting part; 112, groove; 12, second housing; 121, second connecting part; 2, battery cell; 21, positive electrode contact; 22, negative electrode contact; 3, circuit board assembly; 31, PCB board; 32, injection molding part; 4, lead wire; 41, first connecting end; 42, second connecting end; 5, first adhesive paper; 6, second adhesive paper. DETAILED DESCRIPTION

[0025] Various example embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps set forth in the examples, numerical expressions, and numerical values are not limiting to the scope of the present application unless otherwise specifically stated.

[0026] The following description of at least one example embodiment is merely illustrative in nature and is in no way limiting to the scope of the application or its applications or uses.

[0027] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art(s) can not be discussed in detail herein. However, where appropriate, the techniques, methods, and apparatus should be considered as being part of the description of the application.

[0028] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0029] It should be noted that like reference numerals and letters refer to like items throughout the attached drawings, and thus once an item is defined in one drawing, it is not necessary that it be further discussed in subsequent drawings.

[0030] According to one embodiment of the present application, a battery is provided. As shown in Figures 1 to 3 the battery comprises a housing 1 and a circuit board assembly 3. The housing 1 has an inner cavity adapted to accommodate a cell 2. The circuit board assembly 3 comprises a PCB board 31 and an injection molding 32, the PCB board 31 is encapsulated in the injection molding 32, the circuit board assembly 3 is installed in the inner cavity, and the PCB board 31 is electrically connected with the cell 2.

[0031] In this example, the cell 2 is fixedly arranged in the inner cavity of the housing 1, and the circuit board assembly 3 is fixedly arranged in the inner cavity and located at one side of the cell 2. The PCB board 31 is encapsulated in the injection molding 32, and the PCB board 31 is installed in the housing 1 through the injection molding 32, which facilitates assembly and can improve the stability and reliability of assembly. Encapsulating the PCB board 31 in the injection molding 32 can also protect the PCB board 31, which is conducive to prolonging the service life of the battery.

[0032] In this example, the injection molding 32 can be clamped and fixed in the inner cavity of the housing 1, or fixedly connected with the housing 1 through screws or other fasteners. The specific connection method of the injection molding 32 and the housing 1 can be determined by the person skilled in the art according to the actual situation, and is not specifically limited here.

[0033] As shown in Figure 1 this example, the cell 2 is provided with a positive contact 21 and a negative contact 22 at one side, and the connection contacts of the PCB board 31 can be provided protruding from the injection molding 32, so that the PCB board 31 can be electrically connected with the positive contact 21 and the negative contact 22, respectively. For example, the positive contact 21 and the negative contact 22 can be welded to the PCB board 31, or the positive contact 21 and the negative contact 22 can also be in contact type electrical connection with the PCB board 31. The person skilled in the art can determine according to the actual situation, and is not specifically limited here.

[0034] In this example, the shell 1 can be made of metal material to improve the strength of the battery, which can prevent piercing. For example, the shell 1 can be made of stainless steel, aluminum alloy, or nickel-plated steel plate, etc. Those skilled in the art can determine according to the actual situation, which is not specifically limited here.

[0035] In one example, the circuit board assembly 3 is formed by low pressure injection molding. Low pressure injection molding (LPM) is a packaging process that injects hot melt material into a mold at a lower pressure and wraps electronic components or assemblies. The PCB board 31 is packaged in the injection molding part 32 by low pressure injection molding, so as to be able to protect the PCB board 31, such as dustproof, waterproof, anti-vibration impact, chemical corrosion resistance, etc. And by low pressure injection molding, the damage of high temperature and high pressure to the PCB board 31 can be avoided. And the production cycle of low pressure injection molding is short, which is suitable for batch automatic production.

[0036] In this example, the hot melt adhesive of polyamide, polyolefin, etc. can be used to complete the molding at a lower temperature and pressure. Among them, the injection molding temperature can be 100-200°C, and the injection molding pressure can be less than 10 bar. Of course, the specific injection molding temperature and pressure can be determined by those skilled in the art according to the actual situation, which is not specifically limited here.

[0037] In one example, as shown in Figure 1 The shell 1 includes a first shell 11 and a second shell 12, the first shell 11 is provided with a groove 112, and the second shell 12 can be covered on the opening end of the groove 112 to form the inner cavity.

[0038] As shown in Figure 1 In this example, the first shell 11 is provided with a groove 112, the battery cell 2 and the circuit board assembly 3 are placed in the groove 112, and the second shell 12 is connected to the first shell 11, and the second shell 12 covers the opening end of the groove 112, that is, the first shell 11 and the second shell 12 can surround the inner cavity of the shell 1.

[0039] In this example, the first shell 11 and the second shell 12 can be made of metal material to improve the strength of the battery, which can prevent piercing. For example, the first shell 11 and the second shell 12 can be made of stainless steel, aluminum alloy, or nickel-plated steel plate, etc. Among them, the materials of the first shell 11 and the second shell 12 can be the same or different. Those skilled in the art can determine according to the actual situation, which is not specifically limited here.

[0040] It should be noted that the second shell 12 can be a cover structure, and the second shell 12 covers the open end of the first shell 11. Alternatively, the second shell 12 can also be provided with a groove 112 corresponding to the open end of the first shell 11. Of course, the specific structure of the first shell 11 and the second shell 12 can be determined by the actual situation, and is not limited here.

[0041] In one example, the first shell 11 and the second shell 12 are screwed by fasteners to make the battery more stable on the finished product or battery pack. The first shell 11 and the second shell 12 are respectively provided with connecting holes, and the fasteners can be sequentially arranged in the connecting holes of the first shell 11 and the second shell 12, so that the second shell 12 can be fastened and connected to the first shell 11.

[0042] In this example, multiple fasteners can be provided to further improve the stability of the connection between the first shell 11 and the second shell 12. Multiple fasteners can be arranged along the circumference of the first shell 11 and the second shell 12, or multiple fasteners can be arranged on opposite sides of the first shell 11. For example, the shell 1 is a square structure, and one or more fasteners are arranged on each side of the shell 1.

[0043] Among them, the fastener can be a screw, a bolt or a stud, etc., and the person skilled in the art can determine according to the actual situation, and is not limited here.

[0044] In one example, as shown in Figures 1 to 3 The opposite ends of the first shell 11 are respectively provided with first connecting parts 111, and the opposite ends of the second shell 12 are respectively provided with second connecting parts 121, and the fasteners can be sequentially arranged in the first connecting parts 111 and the second connecting parts 121.

[0045] As shown in Figure 1 and Figure 2 In this example, the shell 1 is a square structure, and the first shell 11 is provided with first connecting parts 111 on opposite sides. The second shell 12 is provided with second connecting parts 121 on the corresponding two sides. The first connecting parts 111 and the second connecting parts 121 are respectively provided with connecting holes corresponding to each other. The second shell 12 can cover the first shell 11, and the two first connecting parts 111 and the second connecting parts 121 can correspond one by one. Then, the fasteners can be sequentially arranged in the connecting holes of the first connecting parts 111 and the second connecting parts 121 to connect the second shell 12 to the first shell 11. Among them, the fastener can be a screw, a bolt or a stud, etc., and the person skilled in the art can determine according to the actual situation, and is not limited here.

[0046] In this example, the first connecting part 111 can be a side plate of the groove 112, and the second connecting part 121 can be a connecting plate structure extending from one side of the second housing 12 towards the first connecting part 111.

[0047] Alternatively, in this example, one end of the first housing 11 and one end of the second housing 12 are hinged, i.e., the one end of the second housing 12 can rotate around the first housing 11. The first housing 11 is provided with the first connecting part 111 at the opposite end of the hinged end, and the second housing 12 is provided with the second connecting part 121 at the opposite end of the hinged end. When assembled, the second housing 12 has one side of the second connecting part 121 rotated towards the first connecting part 111 so that the first connecting part 111 and the second connecting part 121 are attached, and then fixed by fasteners.

[0048] In one example, as shown in Figures 1 to 3 , the battery further comprises a lead wire 4 electrically connected to the PCB 31, and the side wall of the groove 112 is provided with a clearance for avoiding the lead wire 4.

[0049] In this example, the PCB 31 is arranged in the inner cavity of the housing 1, one end of the lead wire 4 can extend into the inner cavity of the housing 1 and electrically connected to the PCB 31, and the other end of the lead wire 4 is suitable for electrically connecting external equipment for signal or power transmission.

[0050] In this example, the side wall of the groove 112 of the first housing 11 is provided with a clearance for avoiding the lead wire 4. One end of the lead wire 4 can pass through the clearance and be electrically connected to the PCB 31.

[0051] In one example, as shown in Figure 1 , the lead wire 4 comprises a first connecting end 41 electrically connected to the PCB 31, and the first connecting end 41 is encapsulated in the injection molding part 32 by low-pressure injection molding.

[0052] As shown in Figure 1 , the lead wire 4 has opposite ends, which are respectively a first connecting end 41 and a second connecting end 42. The first connecting end 41 is suitable for electrically connecting the PCB 31, and the second connecting end 42 is suitable for electrically connecting external equipment for signal or power transmission.

[0053] In this example, the first connecting end 41 is encapsulated in the injection molding part 32 by low-pressure injection molding process to stably fix the first connecting end 41. The first connecting end 41 can be electrically connected to the PCB 31 first, and then encapsulated together with the PCB 31 by low-pressure injection molding, thereby improving the assembly efficiency.

[0054] As shown in Figure 1 and Figure 2As shown, in this example, a packaging block protrudes outward from one side of the injection molded part 32, and the packaging block is arranged along the length direction of the lead wire 4. The first connecting end 41 can be encapsulated in the packaging block, and the packaging block can protrude from the housing 1. By providing a packaging block on one side of the injection molded part 32, the first connecting end 41 can be effectively encapsulated, and the volume of the injection molded part 32 can be reduced.

[0055] In this example, the PCB board 31 may be provided with a socket, and the first connection end 41 may be plugged into the socket on the PCB board 31 to improve the connection efficiency.

[0056] In one example, such as Figure 1 As shown, the battery also includes a first adhesive tape 5, which is attached to the outer surface of the battery cell 2.

[0057] like Figure 1 As shown, in this example, the first adhesive tape 5 is adhered to the surface of the battery cell 2 and can be used for insulation. Furthermore, the first adhesive tape 5 can fill the gap between the battery cell 2 and the inner wall of the casing 1, thereby fixing the battery cell 2 and preventing internal components from loosening or being damaged due to battery vibration or movement. Alternatively, the first adhesive tape 5 can be made of a flexible or elastic material, thus providing cushioning protection and alleviating the pressure of external impacts on the casing or internal structure. Alternatively, the first adhesive tape 5 can be made of a material with good thermal conductivity; that is, the first adhesive tape 5 is a thermally conductive tape that can conduct the heat generated by the battery cell 2 to the casing 1, preventing localized overheating. The specific material and structure of the first adhesive tape 5 can be determined by those skilled in the art based on actual conditions, and are not specifically limited here.

[0058] In this example, multiple first adhesive strips 5 can be provided, and each of the multiple first adhesive strips 5 is respectively attached to each edge of the battery cell 2. Alternatively, the first adhesive strips 5 can also cover the surface of the battery cell 2. Those skilled in the art can decide according to the actual situation, and no specific limitation is made here.

[0059] In one example, such as Figure 1 and Figure 3 As shown, the battery also includes a second adhesive tape 6, which is adhered to the outer surface of the housing 1.

[0060] like Figure 1 and Figure 3 As shown, in this example, the second adhesive tape 6 can be adhered to the outer surface of the first housing 11. For example, the second adhesive tape 6 can be double-sided tape. One side of the second adhesive tape 6 is adhered to the outer surface of the first housing 11, and the opposite side can be adhered to the bottom wall of the battery compartment for accommodating the battery, thereby fixing the battery in place, facilitating battery assembly, and improving the stability of the battery in electronic devices.

[0061] In this example, the second adhesive paper 6 can be made of a material with good thermal conductivity, i.e., the second adhesive paper 6 is a thermal conductive adhesive tape, which can conduct the heat generated by the battery to the outside to avoid local overheating. The specific material and structure of the second adhesive paper 6 can be determined by those skilled in the art according to the actual situation, which is not limited here.

[0062] According to another embodiment of the present application, an electronic device is provided. The electronic device comprises the battery of the above embodiments. The battery comprises a housing 1 and a circuit board assembly 3. The housing 1 has an inner cavity adapted to accommodate a battery cell 2. The circuit board assembly 3 comprises a PCB board 31 and an injection molding 32, the PCB board 31 is encapsulated in the injection molding 32, the circuit board assembly 3 is installed in the inner cavity, and the PCB board 31 is electrically connected to the battery cell 2. The PCB board 31 is encapsulated in the injection molding 32, and the PCB board 31 is installed in the housing 1 through the injection molding 32, which facilitates assembly and improves the stability and reliability of the assembly. Encapsulating the PCB board 31 in the injection molding 32 also protects the PCB board 31, which helps to prolong the service life of the battery.

[0063] Of course, the electronic device of the present application also comprises at least all the beneficial effects of the above embodiments, which are not repeated here.

[0064] The electronic device can be a mobile phone, a tablet computer, a headset, etc. Those skilled in the art can determine according to the actual situation, which is not limited here.

[0065] In this example, the electronic device is provided with a battery compartment, and the battery is detachably arranged in the battery compartment.

[0066] The above embodiments mainly describe the differences between the embodiments. The different optimization features of the embodiments can be combined to form a better embodiment without contradiction. Considering the brevity of the text, it is not repeated here.

[0067] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A battery, characterized by, The battery comprises: a shell (1) having an inner cavity suitable for accommodating an electric core (2); a circuit board assembly (3) comprising a PCB board (31) and an injection molding part (32), the PCB board (31) being encapsulated in the injection molding part (32), the circuit board assembly (3) being installed in the inner cavity, and the PCB board (31) being electrically connected with the electric core (2).

2. The battery of claim 1, wherein, The circuit board assembly (3) is formed by low-pressure injection molding.

3. The battery of claim 1, wherein, The shell (1) comprises a first shell (11) provided with a groove (112) and a second shell (12) capable of being covered on the opening end of the groove (112) to form the inner cavity.

4. The battery of claim 3, wherein, The first shell (11) and the second shell (12) are screwed by fasteners.

5. The battery of claim 4, wherein, The first shell (11) is provided with a first connecting part (111) at each opposite end, and the second shell (12) is correspondingly provided with a second connecting part (121) at each end, and the fasteners are sequentially connected to the first connecting part (111) and the second connecting part (121).

6. The battery of claim 3, wherein, The battery further comprises a lead wire (4) electrically connected to the PCB board (31), and a side wall of the groove (112) is provided with an avoiding opening for avoiding the lead wire (4).

7. The battery of claim 6, wherein, The lead wire (4) comprises a first connecting end (41) electrically connected to the PCB board (31), and the first connecting end (41) is encapsulated in the injection molding part (32) by low-pressure injection molding.

8. The battery of claim 1, wherein, The battery further comprises a first adhesive paper (5) adhered to the outer surface of the electric core (2).

9. The battery of claim 1, wherein, The battery further comprises a second adhesive paper (6) adhered to the outer surface of the shell (1).

10. An electronic device, comprising: The battery comprises the battery as claimed in any one of claims 1 to 9. The battery comprises the battery as claimed in any one of claims 1 to 9.

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