Lithium ion battery connection structure convenient to replace and battery thereof

Abstract

The utility model discloses a lithium ion battery connecting structure convenient to replace and a battery thereof. The lithium ion battery connecting structure convenient to replace comprises a circuit board, a protection circuit device, a sealing element and a shell, the circuit board is provided with an input connecting sheet and an output connecting sheet, and the input connecting sheet is used for connecting an electrode at the end part of a battery; the output connecting sheet is used for connecting an electrode of a product, the protection circuit device is arranged on the circuit board and used for preventing abnormal use of the battery, the sealing element wraps the outer surfaces of the circuit board and the battery, and the shell is arranged outside the sealing element and used for connecting the outer surface of the product. The LED lamp has the advantages that the battery is convenient to replace, and the service life of the LED lamp is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries, and in particular relates to a lithium ion battery connection structure which is easy to replace 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, which reduces the service life of the product and causes a waste of resources. In order to solve such problems, a lithium-ion battery connection structure and a battery that are easy to replace 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 lithium-ion battery connection structure that is easy to replace and a battery thereof. The lithium-ion battery connection structure that is easy to replace has the advantages of facilitating battery replacement and increasing product service life.

[0005] According to the embodiment of the utility model, the easily replaceable lithium-ion battery connection structure includes: a circuit board, a protective circuit device, a seal and a shell; the circuit board is provided with an input connecting piece and an output connecting piece, the input connecting piece is used to connect the electrode at the end of the battery; the output connecting piece is used to connect the electrode of the product, the protective circuit device is arranged on the circuit board, the protective circuit device is used to prevent abnormal use of the battery, the seal is wrapped around the outer surface of the circuit board and the battery, the shell is arranged outside the seal, the shell is used to connect the outer surface of the product, and the output connecting piece is exposed outside the shell.

[0006] According to an embodiment of the utility model, the sealing member is an injection molded member, and the sealing member is used to fix the battery, the circuit board and the housing.

[0007] According to an embodiment of the present invention, the housing is a pre-injection molded part, and a first through hole is formed at one end of the housing, and the first through hole is used to snap into the output connecting piece.

[0008] According to an embodiment of the utility model, the output connecting piece includes a positive output connecting piece and a negative output connecting piece, which are used to connect the positive electrode and the negative electrode of the product respectively.

[0009] According to an embodiment of the present invention, the number of the first through holes is the same as the number of the output connecting pieces, and the positions correspond one to one.

[0010] According to an embodiment of the utility model, a second through hole penetrating the circuit board is formed on the circuit board, and the welding end of the input connecting piece is located at the second through hole to facilitate welding the input connecting piece to the electrode of the battery.

[0011] According to an embodiment of the present invention, the input connection piece includes a positive input connection piece and a negative input connection piece, and the number of the second through holes is two, and the two second through holes correspond to the positive input connection piece and the negative input connection piece respectively.

[0012] According to one embodiment of the utility model, the circuit board has a first mounting panel and a second mounting panel; the first mounting panel is located at the end of the battery, the second mounting panel is located on one side of the battery, the input connecting piece is arranged on the first mounting panel, the output connecting piece and the protection circuit device are both arranged on the second mounting panel, and the second through hole passes through the first mounting panel.

[0013] According to an embodiment of the utility model, it also includes a clamping portion, which is used to clamp the lithium-ion battery connection structure and the product to fix the lithium-ion battery connection structure and the product.

[0014] A lithium-ion battery comprises any of the above-mentioned lithium-ion battery connection structures that are easy to replace, wherein the lithium-ion battery comprises a battery body, the circuit board is arranged on the battery body, the seal is wrapped around the outer surface of the battery body and the circuit board, the shell is located on the outer surface of the seal, and a film is provided on the circuit board for gluing and fixing the circuit board to the battery body.

[0015] The beneficial effect of the utility model is that the utility model adopts an input connecting piece to connect the electrode of the battery, and after being processed by the protection circuit device, the output connecting piece contacts the electrode of the product and then guides the product, thereby realizing the conduction between the battery and the product; during assembly, the battery is inserted into the space of the product so that the output connecting piece and the spring piece of the product can be stably contacted, and when the battery needs to be replaced, the shell is pressed to remove the battery for replacement, and the battery and the product do not need to be welded during the entire disassembly and assembly process, thereby realizing the convenience of battery replacement and extending the service life of the product;

[0016] The shell is exposed on the outer surface of the product, forming a whole with the outer shell of the product, which ensures the beauty of the outer surface of the product. At the same time, the exposed shell makes it easier to disassemble and assemble the battery, further improving the convenience of battery replacement;

[0017] The battery and the circuit board are wrapped with seals to ensure the firmness of the connection between the battery and the circuit board, making the welding connection between the battery and the circuit board more stable and avoiding the occurrence of segment connection, short circuit and other phenomena.

[0018] 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.

[0019] 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

[0020] 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:

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a top view schematic diagram of the overall structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the utility model when the housing is removed;

[0024] Figure 4 This is a schematic diagram of the connection between the battery body and the circuit board of the utility model;

[0025] Figure 5 It is a schematic diagram of the overall structure of the circuit board of the utility model;

[0026] Figure 6 This is a bottom view schematic diagram of the overall structure of the circuit board of the utility model;

[0027] Figure 7 It is a schematic diagram of the shell structure of the utility model;

[0028] Figure 8 This is a schematic diagram of the battery structure of the utility model;

[0029] Reference numerals:

[0030] 1. Circuit board; 11. First mounting panel; 111. Second through hole; 12. Second mounting panel; 13. Film; 2. Input connecting piece; 21. Positive input connecting piece; 22. Negative input connecting piece; 3. Output connecting piece; 31. Positive output connecting piece; 32. Negative output connecting piece; 4. Seal; 5. Shell; 51. First through hole; 61. First card slot; 62. Second card slot; 7. Battery body. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] The following is a detailed description of the easily replaceable lithium-ion battery connection structure and the battery thereof according to an embodiment of the utility model with reference to the accompanying drawings.

[0035] like Figure 1-Figure 8 As shown, the easily replaceable lithium-ion battery connection structure according to the embodiment of the utility model includes: a circuit board 1, a protective circuit device, a seal 4 and a shell 5; the circuit board 1 is provided with an input connecting piece 2 and an output connecting piece 3, the input connecting piece 2 is used to connect the electrode at the end of the battery; the output connecting piece 3 is used to connect the electrode of the product, the protective circuit device is arranged on the circuit board 1, and the protective circuit device is used to prevent abnormal use of the battery, the seal 4 is wrapped around the outer surface of the circuit board 1 and the battery, the shell 5 is arranged on the outside of the seal 4, the shell 5 is used to connect the outer surface of the product, and the output connecting piece 3 is exposed to the outside of the shell 5.

[0036] In this embodiment, the circuit board 1 can be located at any position of the battery according to product requirements. 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.; the use of protection circuit devices avoids spontaneous combustion, explosion, etc. caused by battery short circuits, and ensures the stability of the battery; the input connecting piece 2 is used to connect the electrodes of the battery, and after being processed by the protection circuit device, it is guided to the product through the output connecting piece 3 to achieve conduction between the battery and the product; a space for installing the battery is reserved on the product, and a spring connected to the output connecting piece 3 is arranged in the space. When assembling, the battery is inserted into the space of the product. The shell 5 blocks the space of the product and is connected to the outer surface of the product. That is to say, after assembly, the shell 5 is exposed on the outer surface of the product and forms a whole with the outer shell of the product, which ensures the beauty of the outer surface of the product. When the battery needs to be replaced, the battery can be removed and replaced by simply pressing the shell 5, which improves the convenience of disassembly and assembly and extends the service life of the product. The seal 4 is used to wrap the battery and the circuit board 1 to ensure the firmness of the connection between the battery and the circuit board 1, making the welding connection between the battery and the circuit board 1 more stable and avoiding disconnection, short circuit and the like.

[0037] The seal 4 is an injection molded part, and is used to fix the battery, the circuit board 1 and the housing 5 . The seal 4 is made of adhesive material.

[0038] The shell 5 is a pre-injection molded part. A first through hole 51 is formed at one end of the shell 5. The first through hole 51 is used to insert the output connecting piece 3. A part of the output connecting piece 3 is a convex block. The convex block passes through the first through hole 51 and is exposed on the outer surface of the shell 5.

[0039] The output connection piece 3 includes a positive output connection piece 31 and a negative output connection piece 32, which are used to connect the positive electrode and the negative electrode of the product respectively.

[0040] The output connecting piece 3 also includes other auxiliary output terminals such as a temperature monitoring output terminal. The temperature monitoring output terminal is used to monitor the battery temperature.

[0041] The number of the first through holes 51 is the same as the number of the output connecting plates 3 , and the positions thereof correspond one to one.

[0042] In this embodiment, the shell 5 is a pre-injection molded part, so the shape and hardness of the shell 5 can better meet the product's requirements for the shell; the first through hole 51 is formed during the production process of the shell 5, so that the output connecting piece 3 can be exposed through the first through hole 51. During assembly, the input connecting piece 2 is first welded to the electrode of the battery, and then the first through hole 51 is clamped on the output connecting piece 3. Then, the outer surface of the battery and the circuit board 1 is injection molded using a low-temperature and low-pressure injection molding process, so that the injection-molded seal 4 wraps the outer surface of the battery and the circuit board 1. Since the injection molding is liquid, the liquid will flow into the gap between the shell 5 and the battery during the injection molding process, so the seal 4 The battery, circuit board 1 and shell 5 are fixed, and the battery and circuit board 1 are sealed as a whole, achieving the effects of dustproof, moisture-proof and oxidation-proof. At this time, the input connecting piece 2 is located inside the seal 4; compared with the process of directly injection molding on the circuit board 1 and exposing the output connecting piece 3, firstly, the precision of the pre-injection molded part is higher, so that the first through hole 51 and the output connecting piece 3 are better adapted. When installing the shell 5, the first through hole 51 and the output connecting piece 3 play a positioning role, achieving convenient and accurate installation, and in the subsequent injection molding, it is avoided that the injection liquid overflows onto the output connecting piece 3, thereby ensuring the performance of the output connecting piece 3.

[0043] A second through hole 111 penetrating the circuit board 1 is formed on the circuit board 1 , and the welding end of the input connecting piece 2 is located at the second through hole 111 , so as to facilitate welding the input connecting piece 2 to the electrode of the battery.

[0044] The input connection piece 2 includes a positive input connection piece 21 and a negative input connection piece 22 . The number of the second through holes 111 is two, and the two second through holes 111 correspond to the positive input connection piece 21 and the negative input connection piece 22 , respectively.

[0045] The circuit board 1 has a first mounting panel 11 and a second mounting panel 12; the first mounting panel 11 is located at the end of the battery, the second mounting panel 12 is located at one side of the battery, the input connecting piece 2 is arranged on the first mounting panel 11, the output connecting piece 3 and the protection circuit device are both arranged on the second mounting panel 12, and the second through hole 111 passes through the first mounting panel 11.

[0046] In the present embodiment, one end of the battery has a positive connection terminal and a negative connection terminal, and the positive connection terminal protrudes from the negative connection terminal. After the circuit board 1 is connected to the battery, the first mounting panel 11 contacts the negative connection terminal, and the positive connection terminal is recessed into a second through hole 111, thereby fully utilizing the protruding space of the positive connection terminal and reducing the extension of the circuit board 1 to one end of the battery, so as to facilitate the adaptation of the product's styling requirements; by providing two second through holes 111, the welding of the input connecting piece 2 and the battery electrode is more convenient, and during the injection molding process, the injection liquid will still flow into the second through hole 111, so the seal 4 also seals the second through hole 111, achieving the effects of dustproof, moisture-proof and anti-oxidation.

[0047] In another embodiment, the circuit board 1 is arranged at one end of the battery, the input connecting piece 2, the output connecting piece 3 and the protection circuit device are all located at one end of the battery, and the seal 4 is wrapped around the outer surface of the battery and the circuit board 1. At this time, the circuit board 1 extends the length of the battery but avoids extending the battery in the width direction to adapt to products that have requirements on the battery width.

[0048] It also includes a clamping part, which is used to clamp the lithium-ion battery connection structure and the product to fix the lithium-ion battery connection structure and the product.

[0049] In this embodiment, the snap-fitting portion includes a first snap-fitting slot 61 and a second snap-fitting slot 62. The first snap-fitting slot 61 and the second snap-fitting slot 62 are used to cooperate with a portion of the product on which the battery is installed to achieve a snap-fitting effect.

[0050] A lithium-ion battery includes any lithium-ion battery connection structure that is easy to replace. The lithium-ion battery includes a battery body 7, a circuit board 1 is arranged on the battery body 7, a seal 4 is wrapped around the outer surface of the battery body 7 and the circuit board 1, a shell 5 is located on the outer surface of the seal 4, and a film 13 is provided on the circuit board 1 for gluing and fixing the circuit board 1 to the battery body 7.

[0051] The film 13 is disposed on the inner surfaces of the first mounting panel 11 and the second mounting panel 12 to preliminarily fix the circuit board 1 and the battery body 7 .

[0052] Before welding, the circuit board 1 and the battery are initially fixed with the film 13 to prevent the circuit board 1 from shifting during welding, thereby improving the stability of the circuit board 1 during welding.

[0053] The battery body 7 can be a columnar structure or other shaped structures. When the battery body 7 is a columnar structure, the first mounting panel 11 is a circle not larger than the diameter of the battery body 7. The first mounting panel 11 is located on the end face of the battery body 7, the second mounting panel 12 is located on the circumferential surface of the battery body 7, and the shell 5 is located on the circumferential surface of the battery body 7.

[0054] 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.

[0055] 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 lithium-ion battery connection structure that is easy to replace, characterized in that: include: A circuit board (1), wherein the circuit board (1) is provided with an input connecting piece (2) and an output connecting piece (3), wherein the input connecting piece (2) is used to connect the electrode at the end of a battery; and the output connecting piece (3) is used to connect the electrode of a product; A protective circuit device, the protective circuit device being arranged on the circuit board (1) and being used to prevent abnormal use of the battery; A sealing member (4), wherein the sealing member (4) is wrapped around the outer surface of the circuit board (1) and the battery; A shell (5), the shell (5) is arranged outside the sealing member (4), the shell (5) is used to connect to the outer surface of the product, and the output connecting piece (3) is exposed outside the shell (5).

2. The lithium-ion battery connection structure that is easy to replace according to claim 1, characterized in that: The sealing member (4) is an injection-molded member, and the sealing member (4) is used to fix the battery, the circuit board (1) and the housing (5).

3. The lithium-ion battery connection structure that is easy to replace according to claim 2, characterized in that: The housing (5) is a pre-injection molded part. A first through hole (51) is formed at one end of the housing (5). The first through hole (51) is used to snap into the output connecting piece (3).

4. The lithium-ion battery connection structure that is easy to replace according to claim 3, characterized in that: The output connecting piece (3) comprises a positive output connecting piece (31) and a negative output connecting piece (32), which are used to respectively connect the positive electrode and the negative electrode of the product.

5. The lithium-ion battery connection structure that is easy to replace according to claim 4, characterized in that: The number of the first through holes (51) is the same as the number of the output connecting plates (3), and the positions correspond one to one.

6. The lithium-ion battery connection structure that is easy to replace according to claim 5, characterized in that: The circuit board (1) is formed with a second through hole (111) penetrating the circuit board (1), and the welding end of the input connecting piece (2) is located at the second through hole (111), so as to facilitate welding the input connecting piece (2) to an electrode of a battery.

7. The easily replaceable lithium-ion battery connection structure according to claim 6, characterized in that: The input connection piece (2) comprises a positive input connection piece (21) and a negative input connection piece (22); the number of the second through holes (111) is two, and the two second through holes (111) correspond to the positive input connection piece (21) and the negative input connection piece (22), respectively.

8. The easily replaceable lithium-ion battery connection structure according to claim 7, characterized in that: The circuit board (1) comprises a first mounting panel (11) and a second mounting panel (12); the first mounting panel (11) is located at the end of a battery, the second mounting panel (12) is located at one side of the battery, the input connecting piece (2) is arranged on the first mounting panel (11), the output connecting piece (3) and the protective circuit device are both arranged on the second mounting panel (12), and the second through hole (111) passes through the first mounting panel (11).

9. The lithium-ion battery connection structure that is easy to replace according to claim 1, characterized in that: It also includes a clamping portion, which is used to clamp the lithium-ion battery connection structure and the product to fix the lithium-ion battery connection structure and the product.

10. A lithium ion battery, characterized in that: The invention comprises a lithium-ion battery connection structure that is easy to replace as claimed in any one of claims 1 to 9, wherein the lithium-ion battery comprises a battery body (7), the circuit board (1) is arranged on the battery body (7), the sealing member (4) is wrapped around the outer surface of the battery body (7) and the circuit board (1), the shell (5) is located on the outer surface of the sealing member (4), and a film (13) is provided on the circuit board (1) for gluing and fixing the circuit board (1) and the battery body (7).

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