Cylindrical battery case airtightness detection mechanism

Abstract

The utility model relates to an air tightness detection mechanism for a cylindrical battery case, and the mechanism comprises a mounting seat which is used for fixing a sealing cabin; the supporting seat is arranged below the mounting seat; the sealing cover plate is arranged below the opening in the bottom of the sealing bin; the linear rail assembly is vertically arranged between the mounting seat and the supporting seat; the air pump is arranged on one side of the sealing bin and is suitable for exhausting air in the sealing bin; when air tightness detection needs to be carried out on the cylindrical battery shell, a battery placed in a helium environment for a period of time is placed on the sealing cover plate, the sealing cover plate is located between the installation base and the supporting base at the moment, the sealing cover plate is driven to ascend through the linear rail assembly, the sealing cover plate covers the opening in the bottom of the sealing bin, and therefore the sealing bin forms a sealing cavity. The battery shell is located in the sealed chamber, the air pump vacuumizes the sealed chamber, and whether the battery shell is in a sealed state or not is judged by detecting whether helium exists in the chamber or not through the mass spectrometer according to the extracted gas, so that airtightness detection of the cylindrical battery shell is realized.

Description

Technical Field

[0001] The utility model relates to a battery shell airtightness detection mechanism, in particular to a cylindrical battery shell airtightness detection mechanism. Background Art

[0002] Cylindrical batteries consist of a battery case and a cap. During the packaging process of the battery case and cap, leakage is prone to occur, causing gas and moisture to enter the sealed space, corroding the battery cells inside the battery. There is also the risk of gas entering the space inside the battery, posing a risk of combustion.

[0003] In summary, how to realize the airtightness detection of cylindrical battery shells has become an urgent problem that researchers in this field need to solve. Summary of the Invention

[0004] The technical problem to be solved by the utility model is: how to realize the airtightness detection of cylindrical battery shell;

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The utility model is an airtightness detection mechanism for a cylindrical battery shell, comprising: a mounting seat for fixing the sealing chamber; a support seat arranged below the mounting seat; a sealing cover plate arranged below the bottom opening of the sealing chamber; a linear rail assembly vertically arranged between the mounting seat and the support seat, adapted to drive the sealing cover plate to perform lifting movement and to cover and connect the sealing cover plate to the bottom opening of the sealing chamber; an air pump arranged on one side of the sealing chamber and adapted to evacuate air from the sealing chamber;

[0007] In this solution, when it is necessary to perform an airtightness test on the cylindrical battery shell, the battery that has been placed in a helium environment for a period of time is placed on the sealing cover. At this time, the sealing cover is located between the mounting seat and the support seat, and the sealing cover is driven to rise by the linear rail assembly. The sealing cover is closed at the bottom opening of the sealing chamber, so that the sealing chamber forms a sealed chamber. The battery shell is located in the sealed chamber, and the air pump vacuums the sealed chamber. The extracted gas is detected by a mass spectrometer to determine whether the battery shell is in a sealed state. The airtightness test of the cylindrical battery shell is thereby achieved.

[0008] To illustrate the specific structure of the linear rail assembly, the utility model adopts the linear rail assembly comprising: a support frame, which is vertically arranged on one side of the mounting base and the support base; a motor, which is arranged at one end of the support frame; a screw rod, which is vertically arranged on the support frame and driven to rotate by the motor; a connecting rod, one end of which is provided with a nut connected to the screw rod, and the other end of which is connected to a horizontally arranged sealing cover plate;

[0009] In this solution, the motor starts to drive the screw rod to rotate, and the screw rod is connected to the nut at the end of the connecting rod to realize the lifting and lowering of the connecting rod, and then realize the lifting and lowering movement of the sealing cover plate, covering the sealing cover plate with the bottom opening of the sealing chamber.

[0010] In order to detect the airtightness of the battery shell, the utility model adopts a rotating motor fixed on the top of the sealing cover plate; the lower storage seat has a lower inner cavity with an opening facing upward, and its bottom is connected to the output end of the rotating motor; the upper storage seat has an upper inner cavity with an opening facing downward, and its top is rotatably connected to the connecting rod at the top of the sealing chamber; a space for placing cylindrical batteries is formed between the lower inner cavity and the upper inner cavity; the top of the lower storage seat and the bottom of the upper storage seat have mutually inserted transmission teeth;

[0011] In this solution, the battery shell is placed in the lower inner cavity of the lower storage seat, and the upper part of the battery shell is accommodated in the upper inner cavity of the upper storage seat, that is, the battery shell is accommodated in the upper inner cavity and the lower inner cavity;

[0012] The rotating motor drives the lower storage seat to rotate, and the linear rail assembly rises. The lower storage seat and the upper storage seat cooperate with each other through the transmission gear. In this way, the rotating motor is started, driving the lower storage seat and the upper storage seat to rotate synchronously, driving the battery shell in the upper inner cavity and the lower inner cavity to rotate. The rotation of the battery shell can accelerate the efficiency of the battery shell airtightness detection and shorten the detection time;

[0013] The connecting rod is used to connect the upper storage seat, and the upper storage seat can rotate freely relative to the connecting rod.

[0014] In order to control the start and stop of the air pump, the utility model adopts the solenoid valve to control the start and stop of the air pump.

[0015] In order to reduce the noise when the air pump is working, the utility model adopts a muffler provided on one side of the sealing chamber;

[0016] The noise of the air pump during operation can be reduced by providing a muffler.

[0017] The beneficial effects of the utility model are as follows: the utility model is a cylindrical battery shell airtightness detection mechanism. When the cylindrical battery shell needs to be airtightly detected, the battery that has been placed in a helium environment for a period of time is placed on the sealing cover plate. At this time, the sealing cover plate is located between the mounting seat and the support seat, and the sealing cover plate is driven to rise by the linear rail assembly. The sealing cover plate covers the bottom opening of the sealing chamber, so that the sealing chamber forms a sealed chamber. The battery shell is located in the sealed chamber, and the air pump vacuums the sealed chamber. The extracted gas is detected by a mass spectrometer to determine whether the battery shell is in a sealed state. The airtightness detection of the cylindrical battery shell is thereby realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0021] Figure 3 It is a cross-sectional view of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the confidence sealed chamber;

[0023] In the figure: 1-mounting base, 2-sealing chamber, 3-support base, 4-sealing cover, 5-air pump, 6-support frame, 7-motor, 8-connecting rod, 9-rotating motor, 10-lower storage base, 11-upper storage base, 12-transmission gear, 13-connecting rod, 14-solenoid valve, 15-muffler. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0025] like Figure 1-2 As shown, the utility model is a cylindrical battery shell airtightness detection mechanism, comprising: a mounting base 1, which is used to fix the sealing chamber 2; a support base 3, which is arranged below the mounting base 1; a sealing cover plate 4, which is arranged below the bottom opening of the sealing chamber 2; a linear rail assembly, which is vertically arranged between the mounting base 1 and the support base 3, and is suitable for driving the sealing cover plate 4 to perform lifting movement and cover the sealing cover plate 4 with the bottom opening of the sealing chamber 2; an air pump 5, which is arranged on one side of the sealing chamber 2 and is suitable for pumping air into the sealing chamber 2;

[0026] In this solution, when it is necessary to perform an airtightness test on the cylindrical battery shell, the battery that has been placed in a helium environment for a period of time is placed on the sealing cover. At this time, the sealing cover is located between the mounting seat and the support seat, and the sealing cover is driven to rise by the linear rail assembly. The sealing cover is closed at the bottom opening of the sealing chamber, so that the sealing chamber forms a sealed chamber. The battery shell is located in the sealed chamber, and the air pump vacuums the sealed chamber. The extracted gas is detected by a mass spectrometer to determine whether the battery shell is in a sealed state. The airtightness test of the cylindrical battery shell is thereby achieved.

[0027] like Figure 1 、 3As shown, in order to illustrate the specific structure of the linear rail assembly, the linear rail assembly adopted by the present invention includes: a support frame 6, which is vertically arranged on one side of the mounting base 1 and the support base 3; a motor 7, which is arranged at one end of the support frame 6; a screw rod, which is vertically arranged on the support frame 3 and driven to rotate by the motor 7; a connecting rod 8, one end of which is provided with a nut connected to the screw rod, and the other end of which is connected to the horizontally arranged sealing cover plate 4;

[0028] In this solution, the motor starts to drive the screw rod to rotate, and the screw rod is connected to the nut at the end of the connecting rod to realize the lifting and lowering of the connecting rod, and then realize the lifting and lowering movement of the sealing cover plate, covering the sealing cover plate with the bottom opening of the sealing chamber.

[0029] like Figure 3 、 4 As shown, in order to detect the airtightness of the clamped battery shell, the utility model adopts a rotating motor 9 fixed on the top of the sealing cover plate 4; a lower storage seat 10, which has a lower inner cavity with an opening facing upward, and its bottom is connected to the output end of the rotating motor 9; an upper storage seat 11, which has an upper inner cavity with an opening facing downward, and its top is rotatably connected to the connecting rod 13 at the top of the sealed chamber 2; a space for placing cylindrical batteries is formed between the lower inner cavity and the upper inner cavity; the top of the lower storage seat 10 and the bottom of the upper storage seat 11 have mutually inserted transmission teeth 12; there is a certain air extraction gap between the transmission teeth.

[0030] In this solution, the battery shell is placed in the lower inner cavity of the lower storage seat, and the upper part of the battery shell is accommodated in the upper inner cavity of the upper storage seat, that is, the battery shell is accommodated in the upper inner cavity and the lower inner cavity;

[0031] The rotating motor drives the lower storage seat to rotate, and the linear rail assembly rises. The lower storage seat and the upper storage seat cooperate with each other through the transmission gear. In this way, the rotating motor is started, driving the lower storage seat and the upper storage seat to rotate synchronously, driving the battery shell in the upper inner cavity and the lower inner cavity to rotate. The rotation of the battery shell can accelerate the efficiency of the battery shell airtightness detection and shorten the detection time;

[0032] The connecting rod is used to connect the upper storage seat, and the upper storage seat can rotate freely relative to the connecting rod.

[0033] like Figure 1 As shown, in order to control the start and stop of the air pump, the utility model adopts the solenoid valve 14 to control the start and stop of the air pump 5.

[0034] like Figure 2 As shown, in order to reduce the noise when the air pump is working, the utility model adopts a muffler 15 provided on one side of the sealing chamber;

[0035] The noise of the air pump during operation can be reduced by providing a muffler.

[0036] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. Cylindrical battery shell airtightness detection mechanism, characterized in that: include: A mounting base, which is used to fix the sealing chamber; A support base, which is arranged below the mounting base; A sealing cover plate, which is arranged below the bottom opening of the sealed chamber; A linear rail assembly is vertically arranged between the mounting seat and the support seat, and is suitable for driving the sealing cover plate to move up and down, and to cover and connect the sealing cover plate with the bottom opening of the sealing chamber; An air pump is arranged on one side of the sealed chamber and is suitable for pumping air from the sealed chamber.

2. The cylindrical battery shell airtightness detection mechanism according to claim 1, characterized in that: The linear rail assembly comprises: A support frame, which is vertically arranged on one side of the mounting base and the support base; a motor, which is arranged at one end of the support frame; a screw rod, which is vertically arranged on the support frame and driven to rotate by the motor; A connecting rod has a nut at one end connected to the screw rod, and the other end connected to a horizontally arranged sealing cover plate.

3. The cylindrical battery shell airtightness detection mechanism according to claim 1, characterized in that: A rotating motor is fixed on the top of the sealing cover plate; The lower storage seat has a lower inner cavity with an upward opening, and the bottom of the lower inner cavity is connected to the output end of the rotating motor; The upper storage seat has an upper inner cavity with an opening facing downward, and the top of the upper storage seat is rotatably connected to the connecting rod at the top of the sealed chamber; A space for placing cylindrical batteries is formed between the lower inner cavity and the upper inner cavity; The top of the lower storage seat and the bottom of the upper storage seat are provided with transmission teeth which are inserted into each other.

4. The cylindrical battery shell airtightness detection mechanism according to claim 1, characterized in that: The opening and closing of the air pump is controlled by a solenoid valve.

5. The cylindrical battery shell airtightness detection mechanism according to claim 1, characterized in that: A muffler is also provided on one side of the sealing chamber.

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