Replaceable lithium ion battery connection structure and battery thereof
By designing a replaceable lithium-ion battery connection structure, including circuit board, protective circuit devices and support, the problem of high replacement cost of existing lithium-ion batteries is solved, and the convenience of battery replacement and the extension of product service life is achieved.
Patent Information
- Application Number
- CN202420412231.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-04
AI Technical Summary
When existing micro-lithium-ion batteries expire or are damaged, they need to be disassembled and replaced by professionals, resulting in high cost of disassembly and assembly. Users may directly discard products, resulting in waste of resources.
A replaceable lithium-ion battery connection structure is designed, including a circuit board, protective circuit device and support. It is connected to the battery through the input connecting piece and the output connecting piece is connected to the product, so as to achieve convenient replacement between the battery and the product.
It realizes the convenience of battery replacement, reduces maintenance costs, extends the service life of the product, and avoids risks such as battery spontaneous combustion and explosion through protection circuit devices.
Smart Images
Figure CN222581427U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lithium batteries, and in particular relates to a replaceable lithium ion battery connection structure and a battery thereof. Background Art
[0002] At present, the connection method between the micro lithium-ion battery used in wearable products is generally to weld it to the power input terminal on the product through a connecting piece or an electronic wire, which has the advantages of high strength, stability and reliability; however, after the battery life expires or the battery is damaged, the lithium-ion battery needs to be disassembled and replaced by professional personnel, resulting in high disassembly and assembly costs. Therefore, some products will be directly discarded by users after the battery is damaged or the life expires, resulting in a waste of resources. In order to solve such problems, a replaceable lithium-ion battery connection structure and a battery thereof are proposed. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art.
[0004] To this end, the utility model provides a replaceable lithium-ion battery connection structure and a battery thereof, wherein the replaceable lithium-ion battery connection structure and the battery thereof have the advantages of being easy to disassemble and assemble and convenient to replace.
[0005] According to the replaceable lithium-ion battery connection structure of the embodiment of the utility model, it includes: a circuit board, a protection circuit device and a support part; an input connecting piece is provided on one side of the circuit board, and an output connecting piece is provided on the other side of the circuit board; the input connecting piece is used to connect the battery, and the output connecting piece is used to connect the product; the protection circuit device is arranged on the circuit board, and the protection circuit device is used to prevent abnormal use of the battery; the circuit board is arranged on the support part, and the support part is used to fix the circuit board on the battery.
[0006] According to an embodiment of the utility model, the input connection sheet includes a positive input connection terminal and a negative input connection terminal, and the positive input connection terminal and the negative input connection terminal are both located on a side of the circuit board close to the battery to facilitate connection to the battery.
[0007] According to an embodiment of the utility model, the circuit board is formed with a welding hole along the thickness direction, both ends of the welding hole pass through the circuit board, and the position of the welding hole corresponds to the positive input connection terminal and the negative input connection terminal.
[0008] According to an embodiment of the present invention, a groove is formed on a side of the support portion close to the battery, and the groove runs through the circumferential surface of the support portion.
[0009] According to an embodiment of the utility model, there are multiple grooves, and the multiple grooves are evenly distributed around the circumference of the support part.
[0010] According to one embodiment of the utility model, the output connecting piece includes a positive connecting piece and a negative connecting piece, the positive connecting piece and the negative connecting piece are both annular, the positive connecting piece and the negative connecting piece are concentrically arranged, and the positive connecting piece and the negative connecting piece are spaced apart.
[0011] According to an embodiment of the utility model, the groove is filled with an adhesive body, and the adhesive body is used to connect the support part and the battery.
[0012] According to an embodiment of the present invention, the welding hole is filled with a filler to seal the welding hole.
[0013] A lithium-ion battery comprises any replaceable lithium-ion battery connection structure, wherein the lithium-ion battery comprises a battery body, the support portion is arranged at the upper end of the battery body, and the input connecting piece is connected to the electrode of the battery body.
[0014] According to an embodiment of the present invention, the cross-sectional dimension of the circuit board is not greater than the cross-sectional dimension of the battery body.
[0015] The beneficial effect of the utility model is that the utility model adopts a supporting part to support the circuit board, utilizes the connection end of the input connecting piece to connect the battery, transmits the electricity of the battery to the product through the output connecting piece, so as to realize the conduction between the battery and the product, and makes the output connecting piece contact with the electrode connecting end of the product to be energized, that is, a card slot for fixing the battery is provided in the product, so that the battery is inserted into the card slot, and when the output connecting piece is stably connected with the product electrode, the product can be energized, therefore, after the battery is damaged or expires, the user only needs to take the battery out of the card slot and replace it with a new battery, and then the product can be used continuously, thus ensuring the service life of the product and saving the maintenance cost;
[0016] A protective circuit device is set on the circuit board to ensure the stability of the battery and avoid battery self-ignition, explosion and other phenomena caused by battery short circuit.
[0017] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.
[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 above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments of the present invention, in which:
[0020] Figure 1 It is a schematic diagram of the overall structure of the lithium-ion battery of the utility model;
[0021] Figure 2 It is a schematic diagram of the welding hole position of the lithium-ion battery of the utility model;
[0022] Figure 3 It is a top view schematic diagram of the lithium-ion battery connection structure of the utility model;
[0023] Figure 4 It is a bottom view schematic diagram of the lithium ion battery connection structure of the utility model;
[0024] Figure 5 It is a schematic diagram of the battery body of the utility model;
[0025] Reference numerals:
[0026] 1. Support part; 11. Groove; 2. Circuit board; 3. Input connecting piece; 31. Positive input connecting terminal; 32. Negative input connecting terminal; 4. Output connecting piece; 41. Positive connecting piece; 42. Negative connecting piece; 5. Welding hole; 6. Battery body. DETAILED DESCRIPTION
[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0028] In the description of the present utility model, it is necessary to understand 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 positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] The replaceable lithium-ion battery connection structure and the battery thereof according to the embodiment of the utility model will be described in detail below with reference to the accompanying drawings.
[0031] like Figure 1-Figure 5 As shown, the replaceable lithium-ion battery connection structure according to the embodiment of the utility model includes: a circuit board 2, a protection circuit device and a support part 1; an input connecting piece 3 is provided on one side of the circuit board 2, and an output connecting piece 4 is provided on the other side of the circuit board 2; the input connecting piece 3 is used to connect the battery, and the output connecting piece 4 is used to connect the product; the protection circuit device is provided on the circuit board 2, and the protection circuit device is used to prevent abnormal use of the battery; the circuit board 2 is provided on the support part 1, and the support part 1 is used to fix the circuit board 2 on the battery.
[0032] In this embodiment, the support portion 1 is used to support the circuit board 2, and the connection end of the input connecting piece 3 is used to connect the battery. The electricity of the battery is processed by the protection circuit device and then output to the product through the output connecting piece 4 to achieve conduction between the battery and the product. The output connecting piece 4 can be powered on by contacting the electrode connection end of the product. That is to say, a card slot for fixing the battery is provided in the product, and two springs connecting the input connecting piece 3 and the output connecting piece 4 are provided at one end of the card slot. One end of the two springs is connected to the positive and negative electrodes of the product respectively. After the battery is inserted into the card slot, the other ends of the two springs are in contact with the input connecting piece 3 and the output connecting piece 4 respectively. When the output connecting piece 4 is stably connected to the product electrode, the product can be powered on. Therefore, when the battery is damaged or its life expires, the user only needs to take the battery out of the card slot and replace it with a new battery to continue using the product, thereby ensuring the service life of the product and saving maintenance costs. In addition, by providing a protection circuit device on the circuit board 2, the stability of the battery is ensured to avoid spontaneous combustion and explosion of the battery caused by a short circuit.
[0033] The protection circuit device includes a protection chip, and the protection chip is connected to electronic components of the protection circuit such as fuses, MOS tubes, comparators, capacitors, etc.
[0034] The input connection piece 3 includes a positive input connection terminal 31 and a negative input connection terminal 32 . The positive input connection terminal 31 and the negative input connection terminal 32 are both located on a side of the circuit board 2 close to the battery to facilitate connection to the battery.
[0035] The circuit board 2 is formed with a welding hole 5 along the thickness direction. Both ends of the welding hole 5 penetrate the circuit board 2 . The positions of the welding holes 5 correspond to the positive input connection terminal 31 and the negative input connection terminal 32 .
[0036] In this embodiment, the welding hole 5 avoids the protective circuit components when penetrating the upper and lower surfaces of the circuit board 2. That is to say, the local positions of the positive input connection terminal 31 and the negative input connection terminal 32 are exposed through the welding hole 5, so that the positive input connection terminal 31 and the negative input connection terminal 32 are welded to the electrode of the battery through the welding hole 5. A film is provided on the lower surface of the support part 1, and the support part 1 is preliminarily connected to the battery by using the film, and then the positive input connection terminal 31 and the negative input connection terminal 32 are welded to the electrode of the battery from the position of the welding hole 5. At this time, the support part 1 plays a positioning role in the welding position to prevent displacement during the welding process.
[0037] Furthermore, the number of the welding holes 5 is two, and the two welding holes 5 correspond to the positive input connection terminal 31 and the negative input connection terminal 32 respectively.
[0038] A groove 11 is formed on one side of the support portion 1 close to the battery, and the groove 11 runs through the circumferential surface of the support portion 1 .
[0039] There are multiple grooves 11 , and the multiple grooves 11 are evenly distributed around the circumference of the support portion 1 .
[0040] The groove 11 is filled with an adhesive, and the adhesive is used to connect the support part 1 and the battery.
[0041] In this embodiment, the adhesive body can be an adhesive or an injection molded part to achieve the connection between the support part 1 and the battery; after the positive input connection terminal 31 and the negative input connection terminal 32 are welded to the electrode of the battery, a low-temperature and low-pressure injection molding process is used to inject molding into the groove 11, or an adhesive is used to fill the groove 11 to form an adhesive body, and the support part 1 is connected to the battery, thereby achieving the firmness of the connection between the support part 1 and the battery, and making the input connecting piece 3 and the battery firmly connected, reducing short circuits, disconnections and the like; and the use of an adhesive body for connection can avoid damage to the outer surface of the battery; in addition, during the injection molding or filling process, the injection molding or filling fluid will flow into the gap between the support part 1 and the battery to achieve the filling of the gap between the support part 1 and the battery, achieving the effects of dustproof, moisture-proof and anti-oxidation, and playing a sealing role. Through the evenly distributed grooves 11, multi-angle injection molding is achieved, further ensuring the sealing between the support part 1 and the battery.
[0042] Furthermore, the groove 11 is a through hole penetrating the support portion 1 so as to firmly connect the circuit board 2, the support portion 1 and the battery.
[0043] The output connecting piece 4 includes a positive connecting piece 41 and a negative connecting piece 42 . The positive connecting piece 41 and the negative connecting piece 42 are both ring-shaped. The positive connecting piece 41 and the negative connecting piece 42 are concentrically arranged and spaced apart from each other.
[0044] In this embodiment, the positive connecting plate 41 and the negative connecting plate 42 are both located on the side of the circuit board 2 away from the battery to facilitate product connection. The positive connecting plate 41 and the negative connecting plate 42 are concentrically arranged so that the distance between the positive connecting plate 41 and the negative connecting plate 42 is always kept consistent, which is convenient for user installation.
[0045] In another embodiment, the output connecting piece 4 further includes other auxiliary output terminals such as a temperature monitoring output terminal, and the temperature monitoring output terminal is used to monitor the battery temperature.
[0046] The welding hole 5 is filled with a filler to seal the welding hole 5. The filler may be an adhesive or other filling material that can seal the welding hole 5. The adhesive may be epoxy resin, UV glue, etc. The filler is filled after welding to protect the welding hole 5 from moisture, dust and oxidation.
[0047] A lithium-ion battery includes any replaceable lithium-ion battery connection structure, the lithium-ion battery includes a battery body 6, a support portion 1 is arranged at the upper end of the battery body 6, and the positive and negative electrodes of the battery body 6 are both located at the upper end of the battery body 6 to facilitate the input connecting piece 3 to be connected to the electrodes of the battery body 6.
[0048] The cross-sectional dimensions of the circuit board 2 are not greater than the cross-sectional dimensions of the battery body 6 .
[0049] In this embodiment, the battery body 6 and the circuit board 2 can both be columnar structures or other shaped structures. That is to say, when the battery body 6 and the circuit board 2 are both columnar structures, the diameter of the circuit board 2 is smaller than the diameter of the battery body 6 to avoid interference when the battery body 6 is embedded in the product, affecting the installation of the lithium-ion battery.
[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0051] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A replaceable lithium-ion battery connection structure, characterized in that: include: A circuit board (2), wherein an input connection piece (3) is provided on one side of the circuit board (2), and an output connection piece (4) is provided on the other side of the circuit board (2); the input connection piece (3) is used to connect a battery, and the output connection piece (4) is used to connect a product; A protective circuit device, the protective circuit device being arranged on the circuit board (2) and being used to prevent abnormal use of the battery; A support portion (1), the circuit board (2) being arranged on the support portion (1), and the support portion (1) being used to fix the circuit board (2) on the battery.
2. The replaceable lithium-ion battery connection structure according to claim 1, characterized in that: The input connection piece (3) comprises a positive input connection terminal (31) and a negative input connection terminal (32), and the positive input connection terminal (31) and the negative input connection terminal (32) are both located on a side of the circuit board (2) close to the battery, so as to facilitate connection to the battery.
3. The replaceable lithium-ion battery connection structure according to claim 2, characterized in that: The circuit board (2) is formed with a welding hole (5) along the thickness direction, both ends of the welding hole (5) penetrate the circuit board (2), and the position of the welding hole (5) corresponds to the positive input connection terminal (31) and the negative input connection terminal (32).
4. The replaceable lithium-ion battery connection structure according to claim 1, characterized in that: A groove (11) is formed on one side of the support portion (1) close to the battery, and the groove (11) runs through the circumferential surface of the support portion (1).
5. The replaceable lithium-ion battery connection structure according to claim 4, characterized in that: The number of the grooves (11) is multiple, and the multiple grooves (11) are evenly distributed around the circumferential direction of the support part (1).
6. The replaceable lithium-ion battery connection structure according to claim 1, characterized in that: The output connecting piece (4) comprises a positive connecting piece (41) and a negative connecting piece (42), the positive connecting piece (41) and the negative connecting piece (42) are both ring-shaped, the positive connecting piece (41) and the negative connecting piece (42) are concentrically arranged, and the positive connecting piece (41) and the negative connecting piece (42) are spaced apart from each other.
7. The replaceable lithium-ion battery connection structure according to claim 5, characterized in that: The groove (11) is filled with an adhesive body, and the adhesive body is used to connect the support part (1) and the battery.
8. The replaceable lithium-ion battery connection structure according to claim 3, characterized in that: The welding hole (5) is filled with a filler to seal the welding hole (5).
9. A lithium ion battery, characterized in that: It comprises a replaceable lithium-ion battery connection structure as claimed in any one of claims 1 to 8, wherein the lithium-ion battery comprises a battery body (6), the support portion (1) is arranged at the upper end of the battery body (6), and the input connecting piece (3) is connected to the electrode of the battery body (6).
10. The lithium ion battery according to claim 9, characterized in that: The cross-sectional dimensions of the circuit board (2) are no greater than the cross-sectional dimensions of the battery body (6).