Rechargeable capacitive cell lithium battery

Abstract

The utility model discloses a rechargeable capacitive cell lithium battery, and relates to the field of lithium battery devices. The rechargeable capacitive cell lithium battery comprises a battery main body and a cell body arranged in the battery main body, a limiting cap is arranged in the battery main body, and a control cap is movably inserted into the end part of the battery main body. According to the rechargeable capacitive cell lithium battery, the limiting cap and the control cap are arranged on the battery, the limiting cap is electrically connected with the cell through a bonding pad or a metal piece of the PCB of the limiting cap, and meanwhile, a platform electrically connected with the control cap is provided, so that the controller is not directly electrically connected with the cell; the damage to the battery cell in the machining process can be effectively avoided, meanwhile, the plastic part of the limiting cover cap deforms inwards to form a structure after being extruded in the groove rolling process, and the displacement conditions of rotation, outward ejection and the like of the battery cell in the falling process can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and specifically relates to a rechargeable capacitive core lithium battery. Background Art

[0002] A lithium battery is a type of battery with lithium metal or lithium alloy as the positive / negative electrode material and using a non-aqueous electrolyte solution.

[0003] Currently, when the existing lithium batteries are produced and assembled, it is easy to damage the battery core during the process of welding the controller, and the cap on the lithium battery is prone to displacement such as rotation or outward ejection when dropped, which is likely to cause damage to the lithium battery.

[0004] The reason for this problem is that currently, when lithium batteries are produced, the battery core is mainly welded and assembled with the battery case components. Since the controller on the lithium battery is usually directly connected to the battery core, and the connecting components on the controller and the battery core are relatively delicate, it is easy to damage the battery core during the welding process. Moreover, the cap on the existing lithium battery is prone to displacement such as rotation or outward ejection when dropped, which is likely to cause damage to the controller chip. In view of the deficiencies of the existing technology, we propose a rechargeable capacitive core lithium battery to solve the above problems. Content of the Utility Model

[0005] In view of the deficiencies of the existing technology, the utility model provides a rechargeable capacitive core lithium battery, which solves the problems that when the existing lithium batteries are produced and assembled, it is easy to damage the battery core during the process of welding the controller, and the cap on the lithium battery is prone to displacement such as rotation or outward ejection when dropped, which is likely to cause damage to the controller chip.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: A rechargeable capacitive core lithium battery includes a battery main body and a battery core body arranged inside the battery main body; a limit cap is arranged inside the battery main body, and a control cap is movably inserted at the end of the battery main body.

[0007] The limit cap includes a limit plastic part, and the limit plastic part is arranged inside the control cap.

[0008] The control cap includes a control board, a sealant, and an electrically connecting metal part. The sealant is arranged on one side of the control board facing the battery core body, the sealant is potted at the end of the control cap, and the electrically connecting metal part is installed inside the sealant.

[0009] Preferably, the battery main body includes a battery case, and the battery core body is arranged inside the battery case.

[0010] Preferably, the limiting cap is installed inside the battery housing, the control cap is inserted into the end of the battery housing, and positive and negative pin-type tabs are provided on the upper part of the battery cell body.

[0011] Preferably, the limiting cap further includes an electrical connection adapter and an electrode connection nickel strip, and both the electrical connection adapter and the electrode connection nickel strip are provided on the side wall of the limiting plastic part.

[0012] Preferably, a battery positive cap is fixedly connected to the side wall of the control board.

[0013] Preferably, a rolling groove is formed on the outer wall of the battery housing, a sealing cap is provided at the end of the battery housing, and the sealing cap is installed on the outer wall of the control board.

[0014] The utility model discloses a rechargeable capacitive cell lithium battery, and the beneficial effects thereof are as follows: by providing a limiting cap and a control cap on the battery, the PCB pad or metal part of the limiting cap itself is electrically connected to the battery cell, and at the same time, a platform for electrically connecting with the control cap is provided, so that the controller is not directly electrically connected to the battery cell, which can effectively avoid damage to the battery cell during the processing. At the same time, when the plastic part of the limiting cap is in the rolling groove, it deforms inward due to extrusion to form a structure, which can effectively prevent the battery cell from rotating or being ejected outward during dropping. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the battery structure of the first structural formula of the present invention;

[0017] Figure 2 It is a schematic diagram of the battery structure of the second structural formula of the present invention;

[0018] Figure 3 It is a schematic diagram of the battery structure of the third structural formula of the present invention;

[0019] Figure 4 It is a schematic diagram of the control cap structure of the present invention;

[0020] Figure 5 It is a schematic diagram of the limiting cap structure of the present invention.

[0021] In the figure: 100, battery body; 110, control cap; 1101, battery positive cap; 1102, control board; 1103, sealant; 1104, electrical connection metal part;

[0022] 11A, single - electrode metal part type; 11B, single - electrode pad type; 11C, double - electrode metal part type; 11D, double - electrode pad type; 11E, double - electrode female socket type;

[0023] 120, limit cap; 1201, limit plastic part; 1202, electrical connection adapter; 1203, electrode connection nickel strip;

[0024] 12A, first structural formula; 12B, second structural formula; 12C, third structural formula;

[0025] 130, cell body; 1301, cell positive and negative lead - type tab; 140, battery case; 1401, rolling groove; 1402, sealing. Detailed implementation mode

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0027] The embodiments of the present application provide a rechargeable capacitive cell lithium battery, which solves the problems that in the current lithium battery during production and assembly, it is easy to damage the cell during the process of welding the controller, and the cap on the lithium battery is prone to displacement such as rotation or outward ejection when dropped, which is likely to cause damage to the lithium battery.

[0028] To better understand the above - mentioned technical solutions, the following will describe the above - mentioned technical solutions in detail in combination with the accompanying drawings of the specification and specific implementation modes.

[0029] The embodiments of the present utility model disclose a rechargeable capacitive cell lithium battery.

[0030] According to the Figures 1-5 As shown, a rechargeable capacitive cell lithium battery includes a battery body 100 and a cell body 130 disposed inside the battery body 100; a limit cap 120 is disposed inside the battery body 100, and a control cap 110 is movably inserted at the end of the battery body 100;

[0031] The limit cap 120 includes a limit plastic part 1201, and the limit plastic part 1201 is disposed inside the control cap 110;

[0032] The control cap 110 includes a control board 1102, a sealant 1103, and an electrically connected metal part 1104. The sealant 1103 is on the side of the control board 1102 facing the battery cell body 130. The sealant 1103 is potted at the end of the control cap 110, and the electrically connected metal part 1104 is installed inside the sealant 1103;

[0033] The control board 1102 is composed of a PCB and control circuit components, mainly providing functions such as lithium battery charge and discharge protection, discharge voltage regulation, etc.;

[0034] The electrical connection adapter 1202 and the electrode connection nickel strip 1203 are mainly composed of metal components such as iron-nickel plating, copper-nickel plating, or copper-gold plating. These components are connected to the control board 1102 by covering or welding methods. The control board 1102 is connected to the outer shell and the limit cap 120 (contact type or welding type) through these components, or is connected to an external load through these components (such as the positive electrode cap welded on the control board 1102).

[0035] The sealant 1103 is mainly placed on the side of the control board 1102 with components facing the battery cell body 130. After the control board 1102 is completed with chip mounting, glue is injected to completely seal the components, and the height is slightly higher than the highest component on the board except for the input and output connectors. The advantage of this is that the components form a whole after chip mounting and glue injection, and are less affected during secondary processing (stress, dust, foreign objects, etc.). At the same time, it can effectively avoid the influence of liquid and dust on the control circuit during use; when the battery cell leaks liquid, it can effectively prevent the electrolyte from eroding the control board 1102 and prevent circuit short-circuit; when there is an internal short-circuit in the battery cell, it provides a whole pressure-bearing platform for pressure transfer; the sealant 1103 is made of a glue material with a high thermal conductivity coefficient, which can effectively improve the problem of local overheating during the operation of the main chip and power devices on the circuit board, make the heat distribution more uniform, and thus improve the overall performance.

[0036] The battery body 100 includes a battery outer shell 140. The battery cell body 130 is arranged inside the battery outer shell 140. The upper part of the battery cell body 130 is provided with battery cell positive and negative lead pin type tabs 1301. The battery outer shell 140 is a cylindrical iron-nickel plated shell, with an open top and a convex platform or not at the bottom, depending on the product; the battery cell body 130 needs to be insulated from the battery outer shell 140 with PET / PVC sleeves and barley paper. The negative electrode is connected to the battery outer shell 140 through the electrical connection device of the limit cap 120 or the control cap 110.

[0037] The limit cap 120 is installed inside the battery outer shell 140, and the control cap 110 is inserted at the end of the battery outer shell 140.

[0038] The limiting cap 120 further includes an electrical connection adapter 1202 and an electrode connection nickel strip 1203. Both the electrical connection adapter 1202 and the electrode connection nickel strip 1203 are arranged on the side wall of the limiting plastic part 1201. Among them, the electrode connection nickel strip 1203 is only required in one structural solution, namely the following third structural formula 12C, and is not required in other structural solutions.

[0039] A battery positive cap 1101 is fixedly connected to the side wall of the control board 1102.

[0040] A rolling groove 1401 is formed on the outer wall of the battery case 140, and a seal 1402 is arranged at the end of the battery case 140. The seal 1402 is installed on the outer wall of the control board 1102.

[0041] The limiting cap 120 can be divided into three categories: the first structural formula 12A, the second structural formula 12B, and the third structural formula 12C;

[0042] The first structural formula 12A is mainly composed of plastic and PCB. In addition to limiting, it also provides an electrical connection function. Two yellow contacts respectively provide positive and negative electrode connections. It is mainly applicable to capacitive battery cores, and the control cap 110 and the limiting cap 120 are electrically connected in a contact manner through an elastic metal part or by welding.

[0043] The second structural formula 12B is mainly composed of plastic and PCB. In addition to limiting, it also provides an electrical connection function. The middle yellow contact and the outer ring respectively provide positive and negative electrode connections. It is mainly applicable to capacitive battery cores, and the control cap 110 and the limiting cap 120 are electrically connected in a contact manner through an elastic metal part; compared with the first structural formula 12A, this solution does not require CCD to identify the positive and negative electrodes during processing, reducing the assembly difficulty.

[0044] The third structural formula 12C is mainly composed of plastic and PCB. In addition to limiting, it also provides an electrical connection function. It is mainly applicable to capacitive battery cores, and the control cap 110 and the limiting cap 120 are electrically connected in a contact manner through an elastic metal part. Different from the second structural formula 12B, the limiting cap 120 is directly electrically connected to the battery case 140 by welding an electrode connection nickel strip 1203, so that only one electrode connection is required between the control cap 110 and the limiting cap 120.

[0045] The welding method mainly uses materials such as wires, metal strips, and flexible boards to connect the controller and the battery core; the contact method mainly uses connectors, POGOPINs, claw springs, springs or other elastic metal parts to connect the controller and the battery core.

[0046] The control cap 110 can be divided into five forms: single - electrode metal - type 11A, single - electrode pad - type 11B, double - electrode metal - type 11C, double - electrode pad - type 11D, and double - electrode female - socket - type 11E. Among them, the electrical connection metal parts 1104 on the single - electrode metal - type 11A and the double - electrode metal - type 11C can be elastic or rigid.

[0047] The overall appearance of this control cap 110 is a sealed whole, which can be regarded as an electronic component for secondary packaging. Only three electrical connections, namely B +, B -, and P +, are reserved on the outside, and other components are placed in the cavity and covered with a sealant 1103. It has high structural strength and high reliability. The sealed structure makes the control board 1102 not easily corroded by the electrolyte and has strong waterproof performance, greatly reducing the probability of short - circuit failure of the circuit caused by external environmental factors. It has good thermal conductivity. The sealant 1103 with good thermal conductivity can effectively reduce the probability of local high - temperature failure of individual components on the control board 1102. Its shape is standard and it is convenient for transportation and assembly. Silk - screening can be carried out on the components, which is convenient for traceability.

[0048] When the present utility model is in use, first, the battery cell body 130 and the limit cap 120 are assembled and processed and then installed in the steel shell. The limit cap 120 is electrically connected to the battery cell through the pads or metal parts of its own PCB, and at the same time provides a platform for electrical connection with the control cap 110, so that the controller is not directly electrically connected to the battery cell. In this way, the damage to the battery cell during the processing can be effectively avoided. At the same time, when the plastic part of the limit cap 120 passes through the rolling groove 1401, due to being extruded, it deforms inward to form a structure, which can effectively prevent the battery cell from rotating, popping out outward and other displacement situations when falling.

[0049] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above - mentioned embodiments. What is described in the above - mentioned embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rechargeable capacitive core lithium battery, comprising a battery body (100) and a core body (130) disposed inside the battery body (100); characterized in that, A limit cap (120) is provided inside the battery body (100), and a control cap (110) is movably inserted into the end of the battery body (100); The limit cap (120) includes a limit plastic part (1201); Wherein, the limit plastic part (1201) is arranged inside the control cap (110); The control cap (110) includes a control board (1102), a sealing glue (1103) and an electrically connected metal part (1104); Wherein, the sealing glue (1103) is arranged on one side of the control board (1102) facing the battery cell body (130), the sealing glue (1103) is potted at the end of the control cap (110), and the electrically connected metal part (1104) is installed inside the sealing glue (1103).

2. The rechargeable capacitive core lithium battery according to claim 1, wherein: The battery body (100) includes a battery outer shell (140), the battery cell body (130) is arranged inside the battery outer shell (140), and a battery cell positive and negative lead tab (1301) is arranged on the upper part of the battery cell body (130).

3. A rechargeable capacitive cell lithium battery according to claim 1, characterized in that: The limit cap (120) is installed inside the battery outer shell (140), and the control cap (110) is inserted into the end of the battery outer shell (140).

4. A rechargeable capacitive core lithium battery according to claim 1, characterized in that: The limit cap (120) further includes an electrically connected adapter (1202) and an electrode connecting nickel strip (1203), and both the electrically connected adapter (1202) and the electrode connecting nickel strip (1203) are arranged on the side wall of the limit plastic part (1201).

5. A rechargeable capacitive core lithium battery according to claim 1, wherein: A battery positive cap (1101) is fixedly connected to the side wall of the control board (1102).

6. A rechargeable capacitive cell lithium battery according to claim 2, characterized in that: A rolling groove (1401) is formed in the outer wall of the battery outer shell (140), a sealing end (1402) is arranged at the end of the battery outer shell (140), and the sealing end (1402) is installed on the outer wall of the control board (1102).

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