Novel detachable battery device

Abstract

The utility model discloses a novel detachable battery device, which relates to the technical field of batteries and comprises a negative pole shell, a positive pole shell and an electrode ring, the negative pole shell and the positive pole shell are provided with threaded holes which are in one-to-one correspondence in position and number, and the negative pole shell and the positive pole shell are detachably connected through bolts which are in threaded connection in all the threaded holes. A stainless steel electrode plug is arranged below the negative electrode shell, and an electrode ring is arranged below the stainless steel electrode plug; the electrode ring comprises a negative electrode plate placing position, a positive electrode plate placing position is arranged below the negative electrode plate placing position, the positive shell is provided with a positioning groove, and the electrode ring is installed in the positioning groove. According to the utility model, the electrode plates can be effectively aligned, and the accuracy of a test result is improved; meanwhile, the battery is convenient to disassemble, and the integrity of the electrode plates is ensured; and the device can be repeatedly used, so that the manufacturing cost of the button cell is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery technical field, concretely relates to a novel detachable battery device. BACKGROUND

[0002] With the rapid development of lithium ion battery technology, the detection of lithium battery materials is particularly important. Among many detection methods, button batteries play an indispensable role. Button batteries have compact structure and are easy to assemble, and can quickly and effectively evaluate the performance of lithium battery materials in a laboratory environment. Through testing the charge and discharge characteristics of button batteries, the electrochemical performance of the materials, such as specific capacity, rate performance and cycle stability, can be intuitively understood, providing key data support for subsequent large-scale battery research and development.

[0003] During the assembly of button batteries, the placement of lithium sheets and electrode sheets is crucial. If there is any deviation during operation, the lithium sheets and electrode sheets are prone to misalignment, and the electrode sheets may not fully correspond to the lithium sheets, resulting in invalid test results. Meanwhile, commonly used battery shells in the industry, such as CR2032, CR2025 and CR2016, are disposable products and cannot be reused. Moreover, disassembling these battery shells is a destructive operation, which greatly affects the surface state of the electrode sheets and brings many disadvantages to the observation of the positive and negative electrode sheet interface and subsequent testing. SUMMARY

[0004] The utility model aims at providing a novel detachable battery device to solve the above-mentioned defects caused by the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a novel detachable battery device, comprising a negative shell, a positive shell and an electrode ring, the negative shell and the positive shell are provided with threaded holes corresponding in position and number, the negative shell and the positive shell are detachably connected by bolts threaded in all threaded holes, a stainless steel electrode plug is arranged below the negative shell, and an electrode ring is arranged below the stainless steel electrode plug.

[0006] The electrode ring comprises a negative electrode sheet placement position, a positive electrode sheet placement position is arranged below the negative electrode sheet placement position, the positive shell is provided with a positioning groove, and the electrode ring is installed in the positioning groove.

[0007] Preferably, the bolt is a butterfly bolt.

[0008] Preferably, a reinforcing pad is arranged on the negative shell, a spring tube is arranged below the reinforcing pad, and the stainless steel electrode plug is installed below the spring tube.

[0009] Preferably, the stainless steel electrode plug is provided with a polytetrafluoroethylene single ring between the negative electrode piece placement position.

[0010] Preferably, the negative electrode piece placement position and the positive electrode piece placement position are respectively provided with a convex position and a concave position and are connected through the clamping positioning of the convex position and the concave position.

[0011] Preferably, the area of the negative electrode piece placement position is larger than that of the positive electrode piece placement position, and the negative electrode piece placement position is provided with a groove.

[0012] Preferably, the mouth of the positioning groove is provided with an O-shaped sealing ring.

[0013] Preferably, the negative electrode piece placement position and the positive electrode piece placement position are provided with a three-electrode measurement point position.

[0014] Compared with the prior art, the beneficial effects of the present application are:

[0015] The utility model discloses can effectively align electrode piece, improve the accuracy of test result, convenient battery disassembly guarantees the integrity of electrode piece simultaneously, and can realize device reuse, has saved the button cell manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic drawing of the utility model;

[0017] Figure 2 It is the structure schematic drawing of the utility model

[0018] Figure 3 It is the appearance picture of electrode after disassembly.

[0019] 1---threaded hole;2---butterfly bolt;3---negative shell;4---spring tube;5---stainless steel electrode plug;6---polytetrafluoroethylene single ring;7---negative electrode piece placement position;8---three-electrode measurement point position;9---positive electrode piece placement position;10---O-shaped sealing ring;11---positive shell. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0021] Please refer to Figure 1 、 2The application provides a technical scheme: a novel detachable battery device, which comprises a negative electrode shell 3, a positive electrode shell 11 and an electrode ring, the negative electrode shell 3 and the positive electrode shell 11 are provided with thread holes 1 in one-to-one correspondence in position and quantity, the negative electrode shell 3 and the positive electrode shell 11 are detachably connected through bolts screwed in all the thread holes 1, the negative electrode shell 3 is provided below with a stainless steel electrode plug 5, and the stainless steel electrode plug 5 is provided below with the electrode ring.

[0022] The electrode ring comprises a negative electrode sheet placement position 7, the negative electrode sheet placement position 7 is provided below with a positive electrode sheet placement position 9, the positive electrode shell 11 is provided with a positioning groove, the electrode ring is installed in the positioning groove, and the negative electrode sheet placement position 7 and the positive electrode sheet placement position 9 are pressed in the positioning groove by pressing the stainless steel electrode plug 5 through the negative electrode shell 3.

[0023] In the embodiment, the bolt is a butterfly bolt, which is convenient for manual tightening and loosening.

[0024] In the embodiment, the negative electrode shell 3 is provided below with a reinforcing pad, the reinforcing pad is provided below with a spring tube 4, the stainless steel electrode plug 5 is installed below the spring tube 4, the spring tube 4 is pressed through the negative electrode shell 3, so that pressure is applied to the stainless steel electrode plug 5, and the negative electrode sheet placement position 7 below is pressed tightly.

[0025] In the embodiment, a polytetrafluoroethylene single ring 6 is arranged between the stainless steel electrode plug 5 and the negative electrode sheet placement position 7, so that the sealing effect of the stainless steel electrode plug 5 is ensured.

[0026] In the embodiment, the negative electrode sheet placement position 7 and the positive electrode sheet placement position 9 are respectively provided with protruding positions and recessed positions and are connected through the clamping positioning of the protruding positions and the recessed positions, so that it can be ensured that the positive electrode sheet can be completely matched to the negative electrode sheet in the assembly process.

[0027] In the embodiment, the area of the negative electrode sheet placement position 7 is greater than that of the positive electrode sheet placement position 9, the area of the positive electrode sheet is smaller than that of the negative electrode sheet, and the negative electrode sheet placement position 7 is provided with a groove, so that it can be ensured that the positive electrode sheet can be completely matched to the negative electrode sheet in the assembly process, and the accuracy of the test result is improved.

[0028] In the embodiment, the mouth of the positioning groove is provided with an O-shaped sealing ring 10, so that the sealing effect of the whole device is ensured.

[0029] In the embodiment, a three-electrode measurement point position 8 is arranged between the negative electrode sheet placement position 7 and the positive electrode sheet placement position 9, which is used for three-electrode test.

[0030] Working principle: in the glove box environment, the positive shell 11 is placed on the operating table, the O-shaped sealing ring 10 is placed, and the electrode ring composed of the negative electrode piece placing position 7 and the positive electrode piece placing position 9 is placed into the positioning groove of the positive shell 11; the positive plate, the electrolyte, the isolation film, the electrolyte and the negative plate are sequentially placed in the groove of the negative electrode piece placing position 7 of the electrode ring; the stainless steel electrode plug 5 on the negative shell 3 device is aligned with the electrode ring position and is pressed downward, the spring tube 4 is used to apply pressure downward, the electrode ring is pressed, and then the butterfly bolt is used to fix the positive shell 11 and the negative shell 3.

[0031] Embodiment

[0032] The lithium iron phosphate material is selected, the electrode piece is coated by homogenizing and is coated, and the button cell is manufactured by using the device.

[0033]

[0034] Table 1 consistency evaluation of test results

[0035] The battery manufactured by using the device has a charge-discharge specific capacity and a first efficiency variation coefficient CV, and the consistency evaluation is good. Figure 2 It can be seen that the electrode piece after disassembly is smooth around, and no defects occur on the surface.

[0036] In summary, the battery manufactured by the device can effectively improve the consistency of test results and ensure the accuracy of test results; meanwhile, the electrode piece after disassembly has no defects, which is beneficial to subsequent related tests of the electrode piece.

[0037] From the technical common sense, the utility model can realize through other's implementation scheme that does not deviate from its spiritual substance or necessary feature. Therefore, the above-mentioned disclosed implementation scheme, in each aspect, is only an example, and is not only. All changes in the range of the utility model or in the range equivalent to the utility model are included in the utility model.

Claims

1. A novel detachable battery device characterized by: The application relates to a battery shell, which comprises a negative shell (3), a positive shell (11) and an electrode ring, the negative shell (3) and the positive shell (11) are provided with thread holes (1) in one-to-one correspondence in position and quantity, the negative shell (3) and the positive shell (11) are detachably connected through bolts screwed in all the thread holes (1), a stainless steel electrode plug (5) is arranged below the negative shell (3), and the electrode ring is arranged below the stainless steel electrode plug (5). The electrode ring comprises a negative electrode sheet placement position (7), a positive electrode sheet placement position (9) is arranged below the negative electrode sheet placement position (7), the positive shell (11) is provided with a positioning groove, and the electrode ring is arranged in the positioning groove.

2. A novel detachable battery device as claimed in claim 1, wherein: The bolt is a butterfly bolt.

3. A novel detachable battery device as claimed in claim 1, wherein: A reinforcing pad is arranged on the negative shell (3), a spring tube (4) is arranged below the reinforcing pad, and the stainless steel electrode plug (5) is arranged below the spring tube (4).

4. A novel detachable battery device as claimed in claim 1, wherein: A polytetrafluoroethylene single ring (6) is arranged between the stainless steel electrode plug (5) and the negative electrode sheet placement position (7).

5. A novel detachable battery device as claimed in claim 1, wherein: The negative electrode sheet placement position (7) and the positive electrode sheet placement position (9) are respectively provided with convex positions and concave positions and are connected through the clamping positioning of the convex positions and the concave positions.

6. A novel detachable battery device as claimed in claim 1, wherein: The area of the negative electrode sheet placement position (7) is larger than that of the positive electrode sheet placement position (9), and a groove is arranged in the negative electrode sheet placement position (7).

7. A novel detachable battery device as claimed in claim 1, wherein: The mouth of the positioning groove is provided with an O-shaped sealing ring (10).

8. A novel detachable battery device as claimed in claim 1, wherein: A three-electrode measurement point position (8) is arranged between the negative electrode sheet placement position (7) and the positive electrode sheet placement position (9).

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