Positioning structure for rechargeable lithium ion battery

Abstract

The utility model relates to the technical field of rechargeable batteries, in particular to a positioning structure for a rechargeable lithium ion battery, which comprises a positioning plug shell, a positioning pin and a positioning pin, the positioning pin shell is provided with an embedded end and a plugging end, the embedded end is used for being connected with an anode hardware sheet in an embedded manner, and the plugging end is used for plugging an open end of a battery shell; the plugging end is provided with an accommodating cavity, and the accommodating cavity is communicated with a TYPE-C positioning hole formed in the positioning plug shell; the accommodating cavity is used for accommodating the PCB assembly and a TYPE-C female seat on the PCB assembly; and the TYPE-C positioning hole is used for plugging and positioning one end of the TYPE-C female seat. And the TYPE-C positioning hole is used for plugging and positioning one end of the TYPE-C female seat, so that the PCB assembly and the TYPE-C female seat are positioned and fixed, the positioning accuracy is good, the positioning is rapid, and rapid assembly and production are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of rechargeable batteries, and more specifically to a positioning structure for rechargeable lithium-ion batteries. Background Art

[0002] Rechargeable batteries are rechargeable batteries with a limited number of charging times. They can be used after being charged with a charger. The advantages of rechargeable batteries are that they can be recycled, economical, and environmentally friendly.

[0003] Lithium-ion battery is a rechargeable battery that mainly relies on the movement of lithium ions between the positive electrode and the negative electrode to work. During the charge and discharge process, Li+ is embedded and de-embedded between the two electrodes: when charging, Li+ is de-embedded from the positive electrode and embedded into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; when discharging, the opposite is true. With the development of microelectronics technology at the end of the 20th century, high requirements were placed on power sources, and rechargeable and recyclable lithium-ion batteries entered the large-scale practical stage. Rechargeable 1.5V lithium-ion batteries are one of the alternatives to traditional 1.5V batteries.

[0004] The rechargeable 1.5V lithium-ion batteries currently on the market are mainly used to power small devices and instrumentation tools, such as smoke alarms, multimeters, microphones, toys, etc., and basically use steel shell cylindrical cells. However, the disadvantage of steel shell cylindrical cells is that they are easy to explode in the event of a short circuit, while polymer cells use a soft pack design, which is not easy to explode in the event of a short circuit, greatly improving the safety of product use. Since polymer cells use a soft pack design, there is no fixed positioning structure in the structure to locate the positive hardware and TYPE-C female socket components, so a positioning structure must be constructed in the product design to locate the positive hardware and TYPE-C female socket components. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a positioning structure for a rechargeable lithium-ion battery.

[0006] The utility model discloses a positioning structure for a rechargeable lithium-ion battery, and the technical solution adopted is:

[0007] A positioning structure for a rechargeable lithium-ion battery comprises: a positioning plug shell, the positioning plug shell having an embedding end and a plug-in end, the embedding end is used to embed and connect a positive electrode hardware sheet, and the plug-in end is used to plug and seal the open end of a battery shell; the plug-in end is provided with a accommodating cavity, and the accommodating cavity is communicated with a TYPE-C positioning hole opened on the positioning plug shell; the accommodating cavity is used to accommodate a PCB assembly and a TYPE-C female socket on the PCB assembly; the TYPE-C positioning hole is used to plug and position one end of the TYPE-C female socket.

[0008] Furthermore, the positioning plug shell is a cylindrical shell structure.

[0009] Furthermore, the embedding end of the positioning plug shell is the first shell, the plugging end of the positioning plug shell is the second shell, the outer diameter of the first shell is greater than the outer diameter of the second shell, and a stepped cylindrical surface is formed between the second shell and the first shell.

[0010] Furthermore, an alignment block is provided on the side of the first shell, and the alignment block is snap-fitted with an alignment groove on the battery shell.

[0011] Furthermore, the alignment block is located on an end surface where the first shell and the second shell are connected.

[0012] Furthermore, one end of the alignment block that is engaged with the alignment groove of the battery housing is an arc-shaped protrusion structure.

[0013] Furthermore, the plugging direction of the TYPE-C positioning hole is perpendicularly staggered with the axis of the positioning plug shell.

[0014] Furthermore, an elastic member is provided in the accommodating cavity to press the contact portion of the positive electrode hardware sheet embedded in the embedded end, so that the contact portion of the positive electrode hardware sheet is connected to the output end of the PCB assembly in the accommodating cavity.

[0015] Furthermore, the positioning plug housing is a plastic structure.

[0016] The beneficial effects of the utility model are:

[0017] The positioning plug shell of the utility model has an embedding end and a plug-in end, the embedding end is used to embed and connect the positive hardware sheet, so as to realize the accurate positioning and fixation of the positive hardware sheet, and the plug-in end is used to plug and block the open end of the battery shell, so as to facilitate the connection and installation with the battery shell; the accommodating cavity of the plug-in end is used to accommodate the PCB assembly and the TYPE-C female seat on the PCB assembly, and the TYPE-C positioning hole is used to plug and position one end of the TYPE-C female seat, so as to realize the positioning and fixation of the PCB assembly and the TYPE-C female seat, the positioning accuracy is good, the positioning is fast, and it is convenient for rapid assembly and production.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1An overall schematic diagram of the positioning structure for a rechargeable lithium-ion battery provided in an embodiment of the utility model for positioning the positive electrode hardware sheet and the TYPE-C female seat Figure 1 ;

[0021] Figure 2 An overall schematic diagram of the positioning structure for a rechargeable lithium-ion battery provided in an embodiment of the utility model for positioning the positive electrode hardware sheet and the TYPE-C female seat Figure 2 ;

[0022] Figure 3 A schematic diagram of the structure of the positioning plug housing provided in the embodiment of the utility model Figure 1 ;

[0023] Figure 4 A schematic diagram of the structure of the positioning plug housing provided in the embodiment of the utility model Figure 2 ;

[0024] Figure 5 A schematic diagram of the structure of the positive electrode hardware sheet provided in an embodiment of the utility model;

[0025] Figure 6 A schematic diagram of the connection structure between the positioning plug shell and the positive electrode hardware sheet provided in an embodiment of the utility model.

[0026] Icon: positioning plug shell 1; first shell 101; second shell 102; alignment block 103; TYPE-C positioning hole 2; PCB assembly 3; TYPE-C female socket 4; positive electrode hardware sheet 5. DETAILED DESCRIPTION

[0027] In order to clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention, it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0029] See also Figure 1-6 , the utility model provides a technical solution:

[0030] like Figure 1-6As shown, a positioning structure for a rechargeable lithium-ion battery comprises: a positioning plug shell 1, the positioning plug shell 1 having an embedded end and a plug-in end, the embedded end is used to embed and connect the positive electrode hardware sheet 5, and the plug-in end is used to plug and seal the open end of the battery shell; the plug-in end is provided with a accommodating cavity, and the accommodating cavity is connected to a TYPE-C positioning hole 2 opened on the positioning plug shell 1; the accommodating cavity is used to accommodate a PCB assembly 3 and a TYPE-C female seat 4 on the PCB assembly 3; the TYPE-C positioning hole 2 is used to plug and position one end of the TYPE-C female seat 4.

[0031] The working principle and technical effects of the above technical solution are as follows:

[0032] The positioning plug shell 1 of the utility model has an embedded end and a plug-in end. The embedded end is used to embed and connect the positive electrode hardware sheet 5, so as to realize the accurate positioning and fixing of the positive electrode hardware sheet 5. The plug-in end is used to plug and block the open end of the battery shell, which is convenient for connection and installation with the battery shell; the accommodating cavity of the plug-in end is used to accommodate the PCB assembly and the TYPE-C female seat on the PCB assembly, and the TYPE-C positioning hole is used to insert and position one end of the TYPE-C female seat. When positioning and installing, firstly, the integrated PCB assembly 3 to be positioned and fixed is connected to the TYPE-C female seat. The female socket 4 is installed into the accommodating cavity of the plug-in end, and one end of the TYPE-C female socket 4 is controlled to be plugged into the TYPE-C positioning hole, and then the positive hardware sheet 5 is embedded and installed on the positioning plug shell 1 from the embedded end of the positioning plug shell 1, and the contact part of the positive hardware sheet 5 is pressed against the output end of the PCB assembly 3 in the accommodating cavity to achieve the connection between the positive hardware sheet 5 and the PCB assembly 3, and complete the installation of the PCB assembly 3 and the TYPE-C female socket 4, which can realize the rapid positioning and fixation of the PCB assembly and the TYPE-C female socket, with good positioning accuracy and fast positioning, and is convenient for rapid assembly and production.

[0033] The positioning plug housing 1 is a cylindrical housing structure.

[0034] The embedded end of the positioning plug shell 1 is the first shell 101, and the plug-in end of the positioning plug shell 1 is the second shell 102. The outer diameter of the first shell 101 is greater than the outer diameter of the second shell 102. A stepped cylindrical surface is formed between the second shell 102 and the first shell 101, which is convenient for plugging and sealing the open end of the battery shell. When connected, the second shell 102 is inserted into the interior of the battery shell, and the stepped cylindrical surface is blocked on the battery shell, so that the maximum distance of the second shell 102 inserted into the interior of the battery shell is limited, and the open end of the battery shell is sealed by the cooperation of the first shell 101 and the second shell 102.

[0035] An alignment block 103 is provided on the side of the first shell 101 , and the alignment block 103 is snap-fitted with an alignment groove on the battery shell to facilitate alignment and connection between the first shell 101 and the battery shell.

[0036] The alignment block 103 is located on an end surface where the first shell 101 and the second shell 102 are connected.

[0037] One end of the alignment block 103 that is engaged with the alignment groove of the battery shell is an arc-shaped protrusion structure, which is convenient for automatic alignment and adjustment after the alignment block 103 is partially inserted into the alignment groove of the battery shell, thereby improving the alignment and installation efficiency of the alignment block 103 and the alignment groove of the battery shell.

[0038] The plugging direction of the TYPE-C positioning hole 2 is perpendicularly staggered with the axis of the positioning plug shell 1, so that it can longitudinally limit the TYPE-C female socket 4 and the PCB assembly 3, preventing the TYPE-C female socket 4 and the PCB assembly 3 from being displaced in the up and down directions in the accommodating cavity of the positioning plug shell 1.

[0039] An elastic member is provided in the accommodating cavity to press the contact portion of the positive electrode hardware sheet 5 embedded at the embedded end, so that the contact portion of the positive electrode hardware sheet 5 is connected to the output end of the PCB assembly 3 in the accommodating cavity, thereby improving the connection stability between the positive electrode hardware sheet 5 and the PCB assembly 3.

[0040] The positioning plug housing 1 is a plastic structure.

[0041] The positioning structure for a rechargeable lithium-ion battery further includes a limiting component installed in the accommodating cavity, so as to be plugged into the PCB assembly 3 through the limiting component. The limiting component can be an elastic plug rod, which is plugged into the transverse hole of the circuit board of the PCB assembly 3, and the axis of the elastic plug rod is perpendicular to the plugging direction of the TYPE-C positioning hole 2, so as to realize the lateral limiting of the PCB assembly 3, and cooperate with the longitudinal limiting of the TYPE-C positioning hole 2 to the TYPE-C female seat 4 and the PCB assembly 3, so as to realize the precise positioning and installation of the TYPE-C female seat 4 and the PCB assembly 3, and the positioning stability is good.

[0042] The elastic plug rod includes a plug rod body, one end of the plug rod body can be inserted into the transverse hole of the circuit board, and the other end of the plug rod body is slidably connected in the guide tube, and the guide tube is fixed on the inner side surface of the accommodating cavity of the positioning plug shell 1, and a compression spring is fixed between the plug rod body and the inner side surface of the accommodating cavity of the positioning plug shell 1. A retaining ring is provided on the plug rod body. When the plug rod body is inserted into the transverse hole of the circuit board, the retaining ring is blocked on the circuit board. When it is necessary to release the plug rod body from the transverse hole of the circuit board, the retaining ring is pushed to separate it from the circuit board, so that the plug rod body slides into the guide tube and compresses the compression spring, thereby controlling the plug rod body to separate from the transverse hole of the circuit board through the retaining ring.

[0043] The positive electrode hardware sheet 5 includes two long pins and one short pin. During assembly, the two long pins pass through the through holes at the embedded end of the positioning plug shell 1 and are inserted into the accommodating cavity, and are snapped onto the inner side surface of the accommodating cavity of the positioning plug shell 1 to achieve a stable connection between the positive electrode hardware sheet 5 and the positioning plug shell 1; one long pin is snapped onto the elastic member in the accommodating cavity, and the long pin is attached to the output end of the PCB assembly 3 under the top pressure of the elastic member; the short pin passes through the guide hole at the embedded end of the positioning plug shell 1, and the short pin is designed to prevent fooling, so as to ensure that the insertion direction of the other two pins is correct.

[0044] After one end of the TYPE-C female socket 4 is inside the TYPE-C positioning hole 2, one side of the PCB assembly 3 is blocked on the inner side of the positioning plug shell 1. After the positioning plug shell 1 is connected to the battery shell, the other side of the PCB assembly 3 is pressed against the inner side of the battery shell to achieve left and right positioning.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A positioning structure for a rechargeable lithium-ion battery, characterized in that: include: A positioning plug shell (1), the positioning plug shell (1) having an embedding end and a plug-in end, the embedding end being used to embed and connect the positive electrode hardware sheet (5), and the plug-in end being used to plug and seal the open end of the battery shell; the plug-in end is provided with a receiving cavity, the receiving cavity is communicated with a TYPE-C positioning hole (2) provided on the positioning plug shell (1); the receiving cavity is used to receive a PCB assembly (3) and a TYPE-C female socket (4) on the PCB assembly (3); the TYPE-C positioning hole (2) is used to plug and position one end of the TYPE-C female socket (4).

2. A positioning structure for a rechargeable lithium-ion battery according to claim 1, characterized in that: The positioning plug housing (1) is a cylindrical housing structure.

3. A positioning structure for a rechargeable lithium-ion battery according to claim 2, characterized in that: The embedded end of the positioning plug shell (1) is the first shell (101), and the plug-in end of the positioning plug shell (1) is the second shell (102). The outer diameter of the first shell (101) is greater than the outer diameter of the second shell (102), and a stepped cylindrical surface is formed between the second shell (102) and the first shell (101).

4. A positioning structure for a rechargeable lithium-ion battery according to claim 3, characterized in that: An alignment block (103) is provided on the side of the first shell (101), and the alignment block (103) is snap-fitted with an alignment groove on the battery shell.

5. A positioning structure for a rechargeable lithium-ion battery according to claim 4, characterized in that: The alignment block (103) is located on an end surface where the first shell (101) and the second shell (102) are connected.

6. A positioning structure for a rechargeable lithium-ion battery according to claim 5, characterized in that: One end of the alignment block (103) that is engaged with the alignment groove of the battery housing is an arc-shaped protrusion structure.

7. A positioning structure for a rechargeable lithium-ion battery according to claim 2, characterized in that: The plugging direction of the TYPE-C positioning hole (2) is arranged perpendicularly and staggered to the axis of the positioning plug housing (1).

8. A positioning structure for a rechargeable lithium-ion battery according to claim 1, characterized in that: An elastic member is provided in the accommodating cavity to press against the contact portion of the positive electrode hardware sheet (5) embedded at the embedded end, so that the contact portion of the positive electrode hardware sheet (5) is connected to the output end of the PCB assembly (3) in the accommodating cavity.

9. A positioning structure for a rechargeable lithium-ion battery according to claim 1, characterized in that: The positioning plug housing (1) is a plastic structure.

10. A positioning structure for a rechargeable lithium-ion battery according to claim 1, characterized in that: It also includes a limiting component installed in the accommodating cavity, so as to be inserted into the transverse hole of the circuit board of the PCB assembly (3) through the limiting component.

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