A rapid liquid injection and activation device for a reserve battery

Abstract

The patent of the present invention discloses a rapid liquid injection and activation device for a reserve battery, comprising a liquid storage box and an upper tube and a lower tube of the liquid storage box respectively extending from the upper and lower parts of the liquid storage box, which are respectively connected to an upper activation valve, a lower activation valve and a pump, wherein the upper activation valve and the pump are respectively connected to the upper and lower parts of the battery shell through the upper tube and the battery shell tube of the battery shell, and the upper activation valve and the lower activation valve both comprise a valve body and a gasket, an electric heating plate, a film and a pressure ring sequentially arranged in the valve body; in the battery storage state, no current passes through the electric heating plate, and when the battery is activated, current passes through the electric heating plate to increase its temperature, and the film temperature rises accordingly until it exceeds the melting point and ruptures; the liquid injection method of the liquid injection activation device of the present invention combines the existing vacuuming and liquid injection steps into one, which can realize rapid liquid injection and activation of the battery.

Description

Technical Field

[0001] The patent of this invention belongs to the field of liquid primary battery activation technology, and more specifically, relates to a rapid liquid injection activation device for a reserve battery. Background Art

[0002] Reserve primary batteries are widely used in the field of national defense and have the characteristics of long-term storage, rapid activation and compact structure.

[0003] To ensure storage life, primary batteries store the electrolyte and positive and negative dry cells separately. The electrolyte is stored in a liquid storage box, and the dry cells are stored in the battery shell. The liquid storage box and the battery shell are connected by a valve. The valve is closed when the battery is stored. When activated, the valve opens and the electrolyte is quickly injected into the battery shell.

[0004] Due to the long storage period, the valve sealing performance is very demanding. The existing activation technology mainly involves first evacuating the battery housing and then opening the activation valve to inject liquid. The injection time is long and cannot guarantee rapid activation and injection of the battery. The valve structure is complex, and the sealing performance of the electrolyte and dry battery cells is poor, making it difficult to store for a long time.

[0005] The purpose of the present invention is to provide a rapid liquid injection and activation device for a reserve battery in order to overcome the defects of the above-mentioned prior art.

[0006] The objectives of the present invention can be achieved through the following technical solutions: A rapid liquid injection activation device for a reserve battery, comprising a liquid storage box and a liquid storage box upper tube and a liquid storage box lower tube respectively extending from the upper and lower parts of the liquid storage box, the liquid storage box upper tube being connected to an upper activation valve, the liquid storage box lower tube being connected in sequence to a lower activation valve and a pump, the upper activation valve and the pump being connected to the upper and lower parts of a battery shell through a battery shell upper tube and a battery shell tube respectively, the upper activation valve comprising a valve body connected to the liquid storage box upper tube and the battery shell upper tube, and a gasket, an electric heating plate, a film and a pressure ring sequentially arranged in the valve body, the lower activation valve comprising a valve body connected to the liquid storage box lower tube and the battery shell tube, and a gasket, an electric heating plate, a film and a pressure ring sequentially arranged in the valve body, the liquid storage box—liquid storage box lower tube—lower activation valve—pump—battery shell tube—battery shell—battery shell upper tube—upper activation valve—liquid storage box upper tube—liquid storage box being sealed and connected in sequence; in the battery storage state, no current passes through the electric heating plate, and when the battery is activated, current passes through the electric heating plate to increase its temperature, and the temperature of the film rises accordingly until it exceeds the melting point and ruptures.

[0007] The electric heating plate of the rapid liquid injection activation device for a reserve battery is formed by welding a wire and a resistor plate. The resistor plate is composed of a non-closed metal ring and an insulating arc plate to form a complete ring. Both sides of the resistor plate are flat and smooth.

[0008] In the rapid liquid injection and activation device for a reserve battery, the external threads of the lower tube of the liquid storage box are symmetrically provided with wire threading grooves, and the wires pass through the wire threading grooves and exit.

[0009] The above-mentioned rapid liquid injection activation device for a reserve battery has a pressure ring in the upper activation valve and the lower activation valve, which presses the film tightly against the electric heating plate. A gasket is provided between the electric heating plate and the end face of the upper tube / lower tube of the liquid storage box. An axial plane seal is formed between the pressure ring-film-electric heating plate-end face of the upper tube / lower tube of the liquid storage box.

[0010] The film material of the rapid liquid injection and activation device for a reserve battery is non-metallic material.

[0011] In the rapid liquid injection activation device for a reserve battery, a waterproof and breathable membrane is provided between the outer end face of the valve body step of the activation valve and the outer end face of the upper tube of the battery shell, and an axial plane seal is formed by axial pressing force.

[0012] The pump of the rapid liquid injection activation device for a reserve battery is located below the liquid storage box and the battery shell. When the battery is activated, the membrane ruptures and the pump is turned on to extract the electrolyte in the liquid storage box and pump it into the battery shell.

[0013] The beneficial effects of the present invention are:

[0014] Before battery activation, an axial plane seal is formed between the film, pressure ring, electric heating plate and gasket of the lower activation valve and the upper activation valve, separating the electrolyte from the dry battery cells in the battery shell, so that the dry battery cells can be stored for a long time; when the battery is activated, the electric heating plates of the lower activation valve and the upper activation valve are energized to cause the film temperature to exceed the melting point and rupture. Under the action of gravity and pump suction, part of the electrolyte enters the battery shell. At the same time, a vacuum appears on the upper part of the liquid reservoir, which further generates suction on the gas in the battery shell, thereby accelerating the injection of liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 This is a schematic structural diagram of the activation valve according to the present invention;

[0017] Figure 3 This is a schematic structural diagram of the activation valve of the present invention;

[0018] Figure 4 This is a schematic structural diagram of the electric heating plate of the present invention;

[0019] Figure 5 This is a schematic structural diagram of the upper tube and the lower tube of the liquid storage box of the present invention;

[0020] Figure 6It is a structural schematic diagram of the upper activation valve, the lower activation valve and the valve body of the present invention.

[0021] The figures are marked as follows: 1—upper activation valve, 2—liquid storage box upper tube, 3—battery housing upper tube, 4—liquid storage box lower tube, 5—pump, 6—battery housing tube, 7—liquid storage box, 8—battery housing, 9—gasket, 10—electric heating plate, 11—film, 12—pressure ring, 13—valve body, 14—flexible joint, 15—O-ring, 16—waterproof and breathable membrane, 17—wire, 18—non-closed metal ring, 19—insulating arc sheet, 20—wire threading groove, 21—valve body step, 22—lower activation valve. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0023] Reference Figure 1 、 Figure 2 and Figure 3 As shown, the present invention discloses a rapid liquid injection activation device for a reserve battery, comprising a liquid storage box 7 and a liquid storage box upper tube 2 and a liquid storage box lower tube 4 respectively extending from the upper and lower parts of the liquid storage box 7, wherein the liquid storage box upper tube 2 is connected to an upper activation valve 1, and the liquid storage box lower tube 4 is sequentially connected to a lower activation valve 22 and a pump 5, wherein the upper activation valve 1 and the pump 5 are respectively connected to the upper and lower parts of a battery housing 8 through a battery housing upper tube 3 and a battery housing tube 6, wherein the upper activation valve 1 comprises a valve body 13 connected to the liquid storage box upper tube 2 and the battery housing upper tube 3, and a gasket 9, an electric heating plate 10, a film 11, and a pressure ring 1 arranged in sequence in the valve body 13. 2 and a waterproof breathable membrane 16, the lower activation valve 22 includes a valve body 13 connected to the liquid storage box lower tube 4 and the battery shell tube 6, and a gasket 9, an electric heating plate 10, a film 11 and a pressure ring 12 arranged in sequence in the valve body 13, the liquid storage box 7-liquid storage box lower tube 4-lower activation valve 22-pump 5-battery shell tube 6-battery shell 8-battery shell upper tube 3-upper activation valve 1-liquid storage box upper tube 2-liquid storage box 7 are sealed and connected in sequence; in the battery storage state, no current passes through the electric heating plate 10. When the battery is activated, current passes through the electric heating plate 10 to increase its temperature, and the temperature of the film 11 rises accordingly until it exceeds the melting point and breaks.

[0024] The working principle of the present invention is as follows.

[0025] Before battery activation, an axial plane seal is formed between the lower activation valve 22 and the film 11, pressure ring 12, electric heating plate 10, and gasket 9 of the upper activation valve 1, separating the electrolyte from the dry cells in the battery housing 8, allowing the dry cells to be stored for a long time.

[0026] When the battery is activated, the lower activation valve 22 and the electric heater 10 of the upper activation valve 1 are energized, causing the temperature of the membrane 11 to exceed its melting point, causing it to rupture. Because the resistor in the electric heater 10 is a non-closed metal ring 18 and the insulating arc 19 is non-conductive and has a low temperature, the contact area between the membrane 11 and the insulating arc 19 is below its melting point. Therefore, the membrane 11 does not completely rupture, but rather fragments break away, thus preventing blockage in the pipeline. After the membrane 11 ruptures, the electrolyte is pumped into the battery housing 8 by the pump 5 under the influence of gravity and the suction force of the pump 5.

[0027] At the same time, because the liquid reservoir 7, liquid reservoir lower tube 4, lower activation valve 22, pump 5, battery housing tube 6, battery housing 8, battery housing upper tube 3, upper activation valve 1, liquid reservoir upper tube 2, and liquid reservoir 7 are sequentially sealed and connected, as some electrolyte enters the battery housing 8, a vacuum is created above the liquid reservoir, further generating suction on the gas within the battery housing 8, thereby accelerating liquid injection. This liquid injection method combines the existing vacuum extraction and liquid injection steps into one, enabling rapid battery liquid injection and activation.

[0028] In addition, the waterproof and breathable membrane 16 of the upper activation valve 1 can prevent the electrolyte from returning to the liquid storage box 7 from the upper tube 3 of the battery shell.

[0029] Reference Figure 4 As shown, the electric heating plate 10 is formed by welding a wire 17 to a resistor. The resistor is formed by a non-closed metal ring 18 and an insulating arc plate 19 to form a complete ring. Both sides of the resistor are flat and smooth.

[0030] Reference Figure 5 As shown, a threading groove 20 is symmetrically opened at the external thread of the lower tube 4 of the liquid storage box, and the wire 17 passes through the threading groove 20 and exits.

[0031] Reference Figure 6 As shown, a waterproof and breathable membrane 16 is provided between the outer end surface of the valve body step 21 of the upper activation valve 1 and the outer end surface of the upper tube 3 of the battery housing, and an axial plane seal is formed by axial pressing force.

[0032] The pressure ring 12 in the upper activation valve 1 and the lower activation valve 22 compresses the film 11 against the electric heater 10. A gasket 9 is provided between the electric heater 10 and the end faces of the upper tube 2 / lower tube 4 of the liquid reservoir. An axial plane seal is formed between the pressure ring 12, the film 11, the electric heater 10, and the end faces of the upper tube 2 / lower tube 4 of the liquid reservoir. The film 11 is made of a non-metallic material.

[0033] When the lower activation valve 22 is in the battery storage state, no current flows through the electric heating plate 10. When the battery is activated, current flows through the electric heating plate 10, causing the temperature of the membrane 11 to rise, exceeding the melting point and rupturing. The pump 5 is located below the liquid storage box 7 and the battery housing 8. When the battery is activated, the membrane 11 ruptures and the pump 5 is activated, extracting the electrolyte from the liquid storage box 7 and pumping it into the battery housing 8.

[0034] Preferably, the valve body 13 of the lower activation valve 22 and the inlet pipe of the pump 5, and the valve body 13 of the upper activation valve 1 and the upper tube 3 of the battery casing are radially sealed by an O-ring 15; the valve body 13 of the lower activation valve 22 and the inlet pipe of the pump 5, and the valve body 13 of the upper activation valve 1 and the upper tube 3 of the battery casing are fastened by a flexible joint 14.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some embodiments of its application. A person skilled in the art may make several modifications and improvements without departing from the inventive concept of the present invention, and all of these modifications and improvements fall within the scope of protection of the present invention.

Claims

1. A rapid injection and activation device for a reserve battery, characterized in that: The invention comprises a liquid storage box (7) and a liquid storage box upper tube (2) and a liquid storage box lower tube (4) respectively extending from the upper and lower parts of the liquid storage box (7), wherein the liquid storage box upper tube (2) is connected to an upper activation valve (1), and the liquid storage box lower tube (4) is sequentially connected to a lower activation valve (22) and a pump (5), wherein the upper activation valve (1) and the pump (5) are respectively connected to the upper and lower parts of a battery housing (8) through a battery housing upper tube (3) and a battery housing tube (6), and the upper activation valve (1) comprises a valve body (13) connected to the liquid storage box upper tube (2) and the battery housing upper tube (3), and a gasket (9), an electric heating plate (10), a film (11) and a pressure relief valve sequentially arranged in the valve body (13). The lower activation valve (22) comprises a valve body (13) connected to the lower tube (4) of the liquid storage box and the battery shell tube (6), and a gasket (9), an electric heating plate (10), a film (11) and a pressure ring (12) arranged in sequence in the valve body (13); the liquid storage box (7), the lower tube (4) of the liquid storage box, the lower activation valve (22), the pump (5), the battery shell tube (6), the battery shell (8), the upper tube (3) of the battery shell, the upper activation valve (1), the upper tube (2) of the liquid storage box, and the liquid storage box (7) are sealed and connected in sequence; when the battery is activated, the current passes through the electric heating plate (10) to increase its temperature, and the temperature of the film (11) increases accordingly until it exceeds the melting point and breaks.

2. A rapid injection activation device for a reserve battery according to claim 1, characterized in that: The electric heating plate (10) is formed by connecting a wire (17) and a resistor plate. The resistor plate is composed of a non-closed metal ring (18) and an insulating arc plate (19) to form a complete ring. Both sides of the resistor plate are flat and smooth.

3. A rapid injection activation device for a reserve battery according to claim 2, characterized in that: The outer thread of the lower tube (4) of the liquid storage box is symmetrically provided with a threading groove (20), and the wire (17) is passed through the threading groove (20).

4. A rapid injection activation device for a reserve battery according to claim 1, 2 or 3, characterized in that: The pressure ring (12) in the upper activation valve (1) and the lower activation valve (22) presses the film (11) against the electric heating plate (10), and a gasket (9) is provided between the electric heating plate (10) and the upper tube (2) / lower tube (4) of the liquid storage box, and an axial plane seal is formed between the pressure ring (12), the film (11), the electric heating plate (10), and the end faces of the upper tube (2) / lower tube (4) of the liquid storage box.

5. A rapid injection activation device for a reserve battery according to claim 4, characterized in that: The film (11) is made of non-metallic material.

6. A rapid injection and activation device for a reserve battery according to claim 5, characterized in that: A waterproof and breathable membrane (16) is provided between the outer end surface of the valve body step (21) of the upper activation valve (1) and the outer end surface of the battery housing upper tube (3), and an axial plane seal is formed by axial pressing force.

7. A rapid injection and activation device for a reserve battery according to claim 6, characterized in that: The pump (5) is located below the liquid storage box (7) and the battery housing (8). When the battery is activated, the membrane (11) ruptures and the pump (5) is turned on to extract the electrolyte in the liquid storage box (7) and send it into the battery housing (8).

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