Simple tool for measuring pressure of lead-acid storage battery plate group

Abstract

The simple tool comprises a length-adjustable rod body, the rod body comprises a screw rod and a nut detachably connected to the screw rod, the end of the screw rod is fixedly connected with the inner end of the nut, and the outer end of the nut is sequentially bonded with a pressure sensor and a fixed polar plate to form a measuring rod; the pressure sensor is a circular induction steel sheet; during use, the measuring rod is arranged in the unit cell body, the polar plate is arranged at the position opposite to the fixed polar plate, the polar plate and the measuring rod form a framework structure, the nut is moved to gradually compress the partition wall of the unit cell body outwards until the length of the framework structure is equal to the thickness of the polar group, the assembling pressure value of the battery under the thickness of the polar group is obtained, the structure is simple, and operation and use are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery production and manufacturing, and in particular relates to a lead-acid battery pole group slot pressure measuring tool. Background Art

[0002] At present, the conventional lead-acid battery is still used as the starting battery for fuel vehicles in the market. There are two installation positions for lead-acid batteries: front (generally for passenger cars) and rear (generally for commercial vehicles). Regardless of whether the battery is in the front or rear position on the car, the vibration resistance of the lead-acid battery will be tested when the car is driving under harsh working conditions. Therefore, in order to increase the vibration resistance of the lead-acid battery, each battery manufacturer generally considers adjusting the assembly pressure of the pole group to meet the vibration resistance under harsh working conditions of the car.

[0003] If the assembly pressure of the lead-acid battery pole group is too high, the battery tank will be deformed and bulged, affecting the appearance of the battery. If the pressure is too low, the battery's vibration resistance will be poor when the car is driving under harsh conditions, affecting the battery life. Therefore, it is necessary to design a suitable pole group assembly pressure to achieve the battery's vibration resistance under harsh conditions of the car, while not causing the battery tank to deform and bulge. It is necessary to measure the assembly pressure of the lead-acid battery to achieve the appropriate pole group assembly pressure design requirements. Summary of the invention

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings of the prior art and provide a simple tool for measuring the pole group pressure of a lead-acid battery, which has a simple structure and is easy to operate and use.

[0005] Before the pole group is put into the slot, the assembly pressure size under the thickness of the pole group is measured by the utility model to meet the battery pole group assembly pressure design requirements, providing technical support for battery assembly pressure design. At the same time, the deformation resistance of the slot body can be checked, providing technical support for the slot body design.

[0006] The technical solution of the utility model is: comprising a rod body with adjustable length, the rod body comprising a screw rod and a nut detachably connected to the screw rod, the end of the screw rod is fixedly connected to the inner end of the nut, and the outer end of the nut is sequentially bonded with a pressure sensor and a fixed plate to form a measuring rod;

[0007] When in use, the measuring rod is placed in the single-cell slot body, and the pole plate is set at a position opposite to the fixed pole plate. The pole plate and the measuring rod form a frame structure. The moving nut gradually compresses the partition wall of the single-cell slot body outward until the length of the frame structure is equal to the thickness of the pole group, and the assembly pressure value of the battery under the thickness of the pole group is obtained.

[0008] The pressure sensor is connected to the pressure display via a signal wire. When in use, the signal wire and the pressure display are placed outside the tank.

[0009] The nut is forged and connected to the screw rod, and the side surface of the screw rod is marked with a spacing value, and the thread clearance of the screw rod is a.

[0010] The screw is a cylinder with a radius of 3mm and a length of 20mm, and is designed with a thread gap of a=0.5mm, and the side of the screw is marked with a spacing value of 0-20mm; the nut is designed with a large circle radius R=10mm, a hollow radius r=3mm, a length of 20mm, and is tightly fitted with the thread on the screw.

[0011] The pressure range of the pressure sensor is 0-500N, the radius r of the pressure sensor is 5mm, the thickness is 1mm, and the radius r of the pressure sensor is equal to the radius of the nut.

[0012] The pressure display is a digital display that can directly display digital pressure values ​​with an accuracy of 0.1N.

[0013] The number of the electrode plate is at least one.

[0014] The appropriate assembly pressure of the pole group designed for lead-acid batteries can achieve the vibration resistance of the battery under the harsh working conditions of the car, and will not cause the deformation and bulging of the battery slot. It is necessary to measure the assembly pressure of the lead-acid battery. In order to meet the design requirements of the pole group assembly pressure and guide on-site production, the utility model is designed to design a simple pressure measurement tool. The utility model moves the position of the nut so that the pressure measurement tool is gradually extended to the thickness of the pole group, and the pressure value in the digital pressure gauge is read to measure the actual assembly pressure of pole groups of different thicknesses into the slot. The utility model is used to measure the actual value of the battery assembly pressure under different pole group structures, which is used to solve the difference between the theoretical design and actual measurement of the battery assembly pressure under different pole group structures, and optimize the design of the battery pole group assembly pressure according to the actual use conditions of the battery to achieve the vibration resistance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the front view of the rod structure device of the utility model;

[0016] Figure 2 It is a left view of the rod structure device of the utility model;

[0017] Figure 3 It is a schematic diagram of the framework structure of the utility model;

[0018] Figure 4 It is a test diagram of the utility model;

[0019] Figure numerals: 1-plate, 2-nut, 3-screw, 4-nut, 5-pressure sensor, 7-rod body, 8-single cell body. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 , 2 In the figure, the pressure measuring tool of the utility model is composed of three parts: a screw rod 3, a nut 4, and a nut 2, and is externally connected with a pressure sensor 5 and a fixed plate 1 to form a measuring rod. The pressure sensor 5 is connected to the pressure display gauge through a built-in signal wire, and the thickness of the pressure sensor is 2mm. The pressure sensor is a cylinder with a radius of r=5mm and a thickness of 1mm. The pressure display gauge is a digital pressure gauge with an accuracy of 0.1N. The screw rod 3, the nut 4, and the nut 2 form a rod body 7.

[0022] The nut 2 moves left and right on the screw 3 by rotating. According to the total thickness of the pole group, after moving the nut 2 on the simple tooling to the total thickness of the pole group, the pressure display value of the pressure sensor is read, which is the assembly pressure value of the pole group of this model of battery.

[0023] The pressure sensor 5 is a round stainless steel sheet with high sensitivity. The nut in the rotating fixture extends outward to squeeze the inner walls on both sides of the single-cell tank body. When the nut moves outward to squeeze the inner walls of the single-cell tank body, the sensor in the frame structure receives the pressure sensing signal and transmits it to the digital pressure gauge through the wire to display its pressure value. This simulates the pressure on the two sides of the single-cell tank body after the electrode group enters the tank, which is the electrode group entering the tank assembly pressure.

[0024] The nut 2 is made of hard steel material with high hardness and is not easy to deform. The nut 2 has a design radius R=10mm and a length L1 of 20mm, and is tightly connected to the screw rod 3 through the threads on the screw rod 3.

[0025] The screw 3 is made of hard steel material with high hardness and is not easy to deform. The screw is designed to be a cylinder with a radius r=3mm and a length L1 of 20mm. The screw is designed with a 0.5mm clearance thread and a length scale value of 0-20mm. One end of the screw is connected to a nut, and the other end is forged with a nut.

[0026] The nut 4 is made of hard steel material with high hardness and is not easy to deform. It is designed to be a cylinder with a radius r=5mm and a length L2 of 3mm. It is forged and connected to the screw.

[0027] Figure 3 , 4In the embodiment of the utility model, the corresponding battery tank, plate and single-cell pole group are prepared in advance according to the battery model, and the theoretical thickness D of the pole group is calculated according to the number of structural sheets of the pole group. One end of the nut 4 of the rod body 7 is placed in the middle of the pressure sensor 5 and bonded, and then overlapped and bonded with the middle of the fixed pole plate 1 (i.e. H / 2) to form a measuring rod, wherein the height of the pole plate 1 is H, and at the same time, the other end of the pressure measuring tool is overlapped with the middle of the pole plate 11 to form a measuring rod-plate 11 integral frame, and then the integral frame is slowly placed vertically downward in the single-cell tank body (8) until the pole plates (1) on both sides reach the bottom position of the single-cell tank body (8), simulating the normal slotting mode of the pole group. At this time, the effective length of the integral frame is the thickness of the pole plate (n*d1) + the length of the pressure measuring tool (L1+3) + the thickness of the pressure sensor (2mm). Then use an adjustable wrench to slowly twist the nut and gradually move it outward to the total thickness of the electrode group D. At this time, the nut movement distance is: D-(n*d1+L1+3+L1+2). Immediately read the pressure value of the pressure display 6, which is the assembly pressure value of the battery under this electrode group structure.

Claims

1. A simple tool for measuring the pressure of lead-acid battery groups, characterized by: The rod body comprises a rod with adjustable length, the rod body comprising a screw rod (3), a nut (2) detachably connected to the screw rod (3), the end of the screw rod (3) being fixedly connected to the inner end of a nut (4), and the outer end of the nut (4) being sequentially bonded to a pressure sensor (5) and a fixed electrode plate (1) to form a measuring rod; When in use, the measuring rod is placed in the single cell tank body (8), and the pole plate (11) is arranged at a position opposite to the fixed pole plate (1). The pole plate (11) and the measuring rod form a frame structure. The movable nut (2) gradually compresses the partition wall of the single cell tank body outward until the length of the frame structure is equal to the thickness of the pole group, and the assembly pressure value of the battery under the thickness of the pole group is obtained.

2. The simple tooling for measuring the lead-acid battery group pressure according to claim 1 is characterized in that: The pressure sensor (5) is a circular inductive steel sheet; the pressure sensor (5) is connected to the pressure display via a signal wire; when in use, the signal wire and the pressure display are placed outside the tank body.

3. A simple tool for measuring the pressure of a lead-acid battery group according to claim 1, characterized in that: The nut (4) is forged and connected to the screw rod (3), and a spacing value is marked on the side of the screw rod (3). The thread gap of the screw rod (3) is a.

4. The simple tooling for measuring the lead-acid battery group pressure according to claim 3 is characterized in that: The screw (3) is a cylinder with a radius of 3 mm and a length of 20 mm, and is designed with a thread gap of a=0.5 mm, and a spacing value of 0-20 mm is marked on the side of the screw; The nut (2) is designed to have a large circle radius R=10 mm, a hollow radius r=3 mm, a length of 20 mm, and is tightly matched with the thread on the screw rod (3).

5. The simple tooling for measuring the lead-acid battery group pressure according to claim 1 is characterized in that: The pressure sensor has a pressure range of 0-500N, a radius r of the pressure sensor (5) of 5mm, a thickness of 1mm, and a radius r of the pressure sensor (5) of the nut (4).

6. The simple tooling for measuring the lead-acid battery group pressure according to claim 2 is characterized in that: The pressure display (6) is a digital display that can directly display digital pressure values ​​with an accuracy of 0.1N.

7. The simple tool for measuring the lead-acid battery group pressure according to claim 1 is characterized in that: The electrode plate (11) is at least one.

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