Battery

Abstract

The utility model provides a battery, including: a bottom shell, a front shell, a battery body, and a colloid, wherein the bottom shell and the front shell together form a containing space, the battery body is contained in the containing space, the front shell is provided with at least one injection port for low-pressure injection molding, and the colloid is filled in the containing space by low-pressure injection molding to bond the bottom shell, the front shell and the battery body together. The battery of the utility model firmly bonds the inside of the battery together by low-pressure injection molding, and can make the battery shell thinner while ensuring the mechanical properties of the battery, thereby increasing the internal space of the battery and improving the battery capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to a battery. Background Art

[0002] With the advancement of science and technology, electronic products have been widely used in people's lives, providing great convenience and fun for life. However, the use of electronic products is inseparable from electricity, and people's demand for electricity is increasing day by day. It can be said that people's lives are inseparable from electricity. Once they are out of the power grid or the power is cut off, these electronic products will be paralyzed. At this time, the power supply of electronic products has become a problem faced by people.

[0003] At present, there are two main ways to solve this problem. One is to use diesel or gasoline generators to generate electricity, and the other is to use energy storage equipment to store energy for power supply. Using generators to generate electricity is costly, noisy, and consumes diesel or gasoline during the power generation process, causing noise pollution and environmental pollution.

[0004] Batteries are a commonly used energy storage device. Existing batteries generally include a shell and a battery pack disposed in the shell. As electronic products have higher and higher requirements for battery life, the capacity of the battery needs to be increased, and the capacity of the battery is related to the volume of the battery. To increase the capacity while meeting the mechanical properties, the volume of the battery needs to be increased, and batteries with larger volumes will require higher internal space for electronic products. In order to take into account both the large capacity and small volume of the battery in the prior art, the battery shell is usually thinned. This method needs to consider how to ensure the protection of the battery pack after the shell is thinned. Summary of the invention

[0005] The utility model aims to provide a battery, which can firmly bond the inside of the battery together through low-pressure injection molding, and can make the battery shell thinner while ensuring the mechanical properties of the battery, thereby increasing the internal space of the battery and improving the battery capacity.

[0006] To achieve the above-mentioned purpose, the utility model provides a battery, comprising: a bottom shell, a front shell, a battery body, and a colloid, wherein the bottom shell and the front shell together form a accommodating space, the battery body is accommodated in the accommodating space, and the front shell is provided with at least one injection port for low-pressure injection molding, and the colloid is filled in the accommodating space by low-pressure injection molding to bond the bottom shell, the front shell and the battery body together.

[0007] The bottom shell is made by low-pressure injection molding.

[0008] The bottom shell includes a bottom plate and a frame extending vertically from the bottom plate; the frame includes a top edge and a bottom edge arranged opposite to each other, and two side edges arranged opposite to each other; the top edge is provided with a limiting structure to position the battery body, and the bottom plate is provided with an opening for the battery body to receive a power supply load outside.

[0009] The battery body includes a cell assembly, a PCM (Protection Circuit Module) assembly, and a connection assembly. The PCM assembly is mounted on the side of the cell assembly corresponding to the top edge through the connection assembly.

[0010] The PCM assembly includes a PCM board and an output terminal welded on the PCM board; the PCM board is welded on the side of the battery cell assembly corresponding to the top edge, the output terminal is located between the bottom plate and the battery cell assembly, and receives a power supply load through the opening.

[0011] The bottom plate is provided with a groove for accommodating the output terminal, and the groove is provided with an opening for the output terminal to extend out of the bottom plate to receive a power supply load.

[0012] The output terminal includes an FPC and an FPC reinforcement block. One end of the FPC is welded on the PCM board, and the other end is provided with an output end. The output end is a gold finger, and the gold finger extends out of the opening to receive the power supply load externally. The FPC is provided with the FPC reinforcement block on the back of the output end.

[0013] The gold finger is a hardware gold finger.

[0014] The limiting structure is a protrusion that is arranged on the top edge corresponding to the PCM board and is away from the center of the bottom plate. The protrusion, the bottom plate and the surface shell together form an accommodating space. During installation, the PCM board is pushed into the accommodating space to achieve the positioning of the battery body.

[0015] The material of the face shell is metal.

[0016] The face shell is in a rectangular shape, and there are four injection ports, which are respectively arranged at the four corner edges of the face shell.

[0017] The frame end surface away from the bottom plate is provided with several slots on the side facing the center of the bottom plate, and the surface shell includes a panel and several buckles extending vertically from the panel, and the buckles are arranged corresponding to the slots; the surface shell is fixed to the bottom shell by the cooperation of the buckles and the slots.

[0018] The battery also includes a label attached to the surface of the face shell.

[0019] The material of the label is plastic.

[0020] The beneficial effects of the utility model are as follows: the utility model provides a battery, which firmly bonds the inside of the battery together through low-pressure injection molding, and can make the battery shell thinner while ensuring the mechanical properties of the battery, thereby increasing the internal space of the battery and improving the battery capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only provided for reference and explanation and are not intended to limit the present invention.

[0022] Figure 1 An exploded view of a battery in a preferred embodiment of the utility model;

[0023] Figure 2 for Figure 1 A perspective view of a battery (without label);

[0024] Figure 3 for Figure 1 A three-dimensional diagram of a bottom case of a battery;

[0025] Figure 4 for Figure 1 A partial exploded view of the PCM assembly of the battery;

[0026] Figure 5 for Figure 1 Schematic diagram of the assembly process of the battery;

[0027] Figure 6 for Figure 4 Schematic diagram of the installation of step S2. DETAILED DESCRIPTION

[0028] In order to further illustrate the technical means and effects adopted by the present invention, the preferred embodiments of the present invention and the accompanying drawings are described in detail below.

[0029] See also Figures 1 to 6 , showing a battery of a preferred embodiment of the utility model, including: a bottom shell 1, a surface shell 2, a battery body 3, and a colloid 4. The bottom shell 1 and the surface shell 2 together form a accommodating space 5, and the battery body 3 is accommodated in the accommodating space 5. The surface shell 2 is provided with at least one injection port 23 for low-pressure injection molding. The colloid 4 is filled in the accommodating space 5 by low-pressure injection molding to bond the bottom shell 1, the surface shell 2 and the battery body 3 together.

[0030] Low Pressure Injection Molding (LPM) is a process that uses relatively low pressure to inject molten material into a mold and solidify it. Traditional injection molding processes are defective due to excessive pressure. Low-pressure molding only requires very small pressure to make the melt flow into a very small mold space, so it will not damage the fragile components that need to be packaged, thereby improving the product yield. At the same time, due to the low injection pressure, the internal stress generated by the material during the solidification process is small, which reduces the uneven flow of materials caused by high pressure. The colloid obtained by injection molding is more uniform and has good mechanical properties. The battery of the utility model uses the colloid formed by low-pressure injection molding to firmly bond the inside of the battery together, while also playing a role in sealing and waterproofing. While ensuring the mechanical properties of the battery, the battery shell can be made thinner, thereby increasing the internal space of the battery and improving the battery capacity. The battery of the utility model is particularly suitable for occasions where there are requirements for battery volume.

[0031] Preferably, the bottom shell 1 is made by low-pressure injection molding.

[0032] The low-pressure injection molded bottom shell has good mechanical properties, which allows the outer shell to be made thinner without affecting the function, further increasing the internal space of the battery and improving the battery capacity.

[0033] Furthermore, the bottom shell 1 includes a bottom plate 11 and a frame 12 extending vertically from the bottom plate 11, the frame 12 includes a top edge 121 and a bottom edge 122 arranged opposite to each other, and two side edges 123 arranged opposite to each other, the top edge 121 is provided with a limiting structure 1211 to position the battery body 3, and the bottom plate 11 is provided with an opening 111 for the battery body 3 to receive a power supply load outside.

[0034] The battery body 3 includes a cell assembly 31 , a PCM assembly 32 , and a connection assembly 33 . The PCM assembly 32 is mounted on a side surface of the cell assembly 31 corresponding to the top edge 121 through the connection assembly 33 .

[0035] The PCM assembly 32 includes a PCM board 321 and an output terminal 322 welded on the PCM board 321. The PCM board 321 is welded on the side of the battery cell assembly 31 corresponding to the top edge 121. The output terminal 322 is located between the bottom plate 11 and the battery cell assembly 31 and receives a power supply load through the opening 111.

[0036] Preferably, the bottom plate 11 is provided with a groove 112 for accommodating the output terminal 322 , and the groove 112 is provided with an opening 111 for the output terminal 322 to extend out of the bottom plate 11 to receive a power supply load.

[0037] By providing a groove on the bottom plate, the output terminal is fixed in the bottom shell, which is not easy to loosen or sink, thus ensuring the stable output of the battery.

[0038] Preferably, the output terminal 322 includes an FPC 3221 and an FPC reinforcement block 3222, one end of the FPC 3221 is welded on the PCM board 321, and the other end is provided with an output end 32211; the output end 32211 is a gold finger, and the gold finger extends out of the opening 111 to externally receive the power supply load; the FPC 3221 is provided with the FPC reinforcement block 3222 on the back side of the output end 32211.

[0039] The output terminals can be better protected and fixed by setting FPC reinforcement blocks.

[0040] Preferably, the gold finger is a hardware gold finger.

[0041] Preferably, the limiting structure 1211 is a protrusion away from the center of the bottom plate 11 and arranged on the top edge 121 corresponding to the PCM board 321. The protrusion, the bottom plate 11 and the surface shell 2 together form a accommodating space 51. During installation, the PCM board 321 is pushed into the accommodating space 51 to achieve the positioning of the battery body 3.

[0042] The limiting structure has a simple structure and can be formed by integral molding without requiring additional processes.

[0043] Preferably, the surface shell 2 is made of metal.

[0044] Using metal sheets as the face shell can make the face shell thinner while ensuring the mechanical properties of the battery, further increasing the internal space of the battery and improving the battery capacity.

[0045] Preferably, the surface shell 2 is a steel sheet.

[0046] Preferably, the face shell 2 is in a rectangular shape, and there are four injection ports 23 , which are respectively arranged at the four corner edges of the face shell 2 .

[0047] Since the battery body is located in the center of the bottom shell, the injection port is set at the edge of the surface shell to better ensure that the colloid fills the entire bottom shell and tightly bonds the bottom shell, the surface shell and the battery body together.

[0048] Preferably, the frame end surface of the frame 12 away from the bottom plate 11 is provided with several slots 124 on the side facing the center of the bottom plate 11, and the surface shell 2 includes a panel 21 and several buckles 22 extending vertically from the panel 21, and the buckles 22 are arranged corresponding to the slots 124; the surface shell 2 is fixed to the bottom shell 1 by the cooperation of the buckles 22 and the slots 124.

[0049] Preferably, the bottom shell 1 is integrally formed by low-pressure injection molding.

[0050] Furthermore, the battery also includes a label 6 covering the surface shell 2.

[0051] The material of the label 6 is plastic. Preferably, the material of the label 6 is PET (polyethylene terephthalate).

[0052] Preferably, the battery of the present invention is a lithium battery.

[0053] Figure 5 The following is a schematic diagram of the assembly process of a battery according to a preferred embodiment of the utility model. The assembly process of the battery specifically includes the following steps:

[0054] S1: providing a battery cell assembly 31, a PCM assembly 32, and a connecting assembly 33, and connecting the PCM assembly 32 to the side of the battery cell assembly 31 through the connecting assembly 33 to obtain a battery body 3;

[0055] S2: Install the battery body 3 into the bottom shell 1;

[0056] S3: Install the face shell 2;

[0057] S4: low-pressure injection molding is performed through the injection port 23 of the front shell 2 to inject colloid between the front shell 2 and the bottom shell 1;

[0058] S5: A label 6 is attached to the surface of the face shell 2 to complete the assembly.

[0059] Figure 6 The installation of step S2 is shown, specifically: pushing the PCM board 321 into the accommodating space 51 formed by the limiting structure 1211, the bottom plate 11 and the surface shell 2, so as to install the battery body 3 at a specified position in the bottom shell 1.

[0060] The battery of the utility model first welds the PCM assembly and the battery cell assembly together, and then installs the battery body at a specified position in the bottom shell through the limiting structure on the frame, and then performs low-pressure injection molding. The battery body will not slide during the assembly process, which is conducive to improving the production yield and assembly efficiency. In a preferred embodiment of the utility model, a groove for fixing the output terminal is also provided on the bottom shell, so that the output terminal will not loosen during the assembly process, which can protect the output terminal and ensure that the output terminal is installed in the corresponding position, further improving the production yield and assembly efficiency.

[0061] In summary, the utility model provides a battery, which firmly bonds the inside of the battery together through low-pressure injection molding, and can make the battery shell thinner while ensuring the mechanical properties of the battery, thereby increasing the internal space of the battery and improving the battery capacity.

[0062] As described above, for ordinary technicians in this field, various other corresponding changes and modifications can be made according to the technical scheme and technical concept of the utility model, and all these changes and modifications should fall within the protection scope of the claims of the utility model.

Claims

1. A battery, characterized in that: include: A bottom shell (1), a front shell (2), a battery body (3), and a colloid (4), wherein the bottom shell (1) and the front shell (2) together form a receiving space (5), the battery body (3) is received in the receiving space (5), the front shell (2) is provided with at least one injection port (23) for low-pressure injection molding, and the colloid (4) is filled in the receiving space (5) by low-pressure injection molding to bond the bottom shell (1), the front shell (2), and the battery body (3) together.

2. The battery according to claim 1, characterized in that The bottom shell (1) comprises a bottom plate (11) and a frame (12) extending vertically from the bottom plate (11); the frame (12) comprises a top edge (121) and a bottom edge (122) arranged opposite to each other, and two side edges (123) arranged opposite to each other; the top edge (121) is provided with a limiting structure (1211) for positioning the battery body (3); and the bottom plate (11) is provided with an opening (111) for receiving a power supply load outside the battery body (3).

3. The battery according to claim 2, characterized in that The battery body (3) comprises a battery cell assembly (31), a PCM assembly (32), and a connection assembly (33); the PCM assembly (32) comprises a PCM board (321) and an output terminal (322) welded to the PCM board (321); the PCM board (321) is mounted on a side surface of the battery cell assembly (31) corresponding to the top edge (121) through the connection assembly (33); the output terminal (322) is located between the bottom plate (11) and the battery cell assembly (31), and receives a power supply load externally through the opening (111).

4. The battery according to claim 3, characterized in that The bottom plate (11) is provided with a groove (112) for accommodating the output terminal (322), and the groove (112) is provided with an opening (111) for allowing the output terminal (322) to extend out of the bottom plate (11) to receive a power supply load.

5. The battery according to claim 3, characterized in that The output terminal (322) comprises an FPC (3221) and an FPC reinforcing block (3222); one end of the FPC (3221) is welded to the PCM board (321), and the other end is provided with an output end (32211); the output end (32211) is a gold finger, and the gold finger extends out of the opening (111) to externally receive a power supply load; the FPC (3221) is provided with the FPC reinforcing block (3222) on the back side of the output end (32211).

6. The battery according to claim 3, characterized in that The limiting structure (1211) is a protrusion that is arranged on the top edge (121) and corresponds to the PCM board (321) and is away from the center of the bottom plate (11). The protrusion, the bottom plate (11) and the surface shell (2) together form a receiving space (51). During installation, the PCM board (321) is pushed into the receiving space (51) to achieve the positioning of the battery body (3).

7. The battery according to claim 1, characterized in that The material of the surface shell (2) is metal.

8. The battery according to claim 1, characterized in that The face shell (2) is in a rectangular shape, and there are four injection ports (23), which are respectively arranged at the four corner edges of the face shell (2).

9. The battery according to claim 2, characterized in that The frame end surface of the frame (12) away from the bottom plate (11) is provided with a plurality of slots (124) on a side facing the center of the bottom plate (11); the surface shell (2) comprises a panel (21) and a plurality of buckles (22) extending vertically from the panel (21); the buckles (22) are arranged corresponding to the slots (124); and the surface shell (2) is fixed to the bottom shell (1) by the cooperation of the buckles (22) and the slots (124).

10. The battery according to claim 1, characterized in that The bottom shell (1) is made by low-pressure injection molding.

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