Valve-controlled sealed lead-acid accumulator for electric vehicle

Abstract

The invention relates to a design and manufacture method of valve-controlled sealed lead-acid accumulator for electric vehicle with high specific energy and deep cycle and long service life, wherein by the modification of a battery cover structure, the changes of charging / discharging state and temperature are monitored in real time for every 2V single battery of 4-24V of the whole accumulator; the positive and negative columns of the single battery are made of metal inserts; metal plates are connected between the metal inserts; the inserts and metal plates are all made of copper, aluminum and nickel and the like with densities less than the density of lead and conductivities better than the conductivity of lead; the surfaces of the inserts and the metal plates are all coated with lead, tin-lead or tin-lead-sliver alloy; the positive and negative pole plates are both thin pole plates; and 0.1%-2% of silica powder with an average grain diameter of 3-15 microns, 0.02%-0.5% of lignin and 0.5%-1.5% of conductive graphite are added in active substances which are diachylon; the use ratio of the active substances is greatly improved; ultra-fine glass fiber clapboards and a polyethylene (PE) clapboard are combined; and the accumulator in the invention is ensured to have the characteristics of high energy-density and deep cycle and long life.

Description

technical field

[0001] The invention relates to a design and manufacture method of a high specific energy deep cycle long-life valve-regulated sealed lead-acid battery for an electric vehicle, especially for the charging and discharging state of each 2V single battery of a 4-24V integral battery and the change performance of temperature. Carry out timely monitoring. Background technique

[0002] At present, my country is piloting the promotion of the use of new energy electric vehicles. It greatly promotes the research and development of batteries. New energy electric vehicles require batteries to have a large capacity—satisfied with long mileage, high power—satisfied with fast startup acceleration, strong climbing ability, short charging time—fast energy replenishment, convenient monitoring and maintenance And deep cycle long life, the performance of lead-acid batteries must fully meet these requirements, has become the biggest problem in the research and development of ne...

Examples

Embodiment 1

[0041]The present invention takes a 12V100Ah storage battery as an example, and the designed external dimensions of the battery are 299.6mm in length, 173mm in width and 220mm in height. The material of the battery tank cover is made of ABS resin, and the connection of the tank cover is welded by hot melting method. The specific decomposition is that the height of the battery tank is 195mm, divided into 6 cells, the wall thickness between the cells of the battery tank is 2mm, the thickness of the outer wall around the battery tank is 5mm, and the demoulding slope is less than 0.3%. The battery cover is 25mm high, divided into upper and lower parts, the upper part is 15mm high, the lower part is 10mm high, and the middle spacer is 3mm thick. The lower part of the battery cover is divided into 6 cells corresponding to the battery slot, and the wall thickness between the cells is 5mm. The thickness of the outer wall around it is 7mm. The upper part of the battery cover is a seale...

Embodiment 2

[0050] Embodiment 2 and Embodiment 1 have exactly the same shape and size design of the battery tank cover, the same pole structure, the same voltage monitor and temperature monitor, the same grid is used to manufacture the positive and negative plates, and the battery assembly method is the same. The differences from Example 1 are described in detail below.

[0051] The 12 poles used in the 12V100Ah storage battery of Embodiment 2 of the present invention are still unified into a pole, such as Figure 4 As shown in A, the pole is composed of two parts: an aluminum insert 27 and a tin-lead alloy 28 containing 3% tin. The upper part of the aluminum insert is equipped with an M6 screw hole 9, and the lower part is provided with a through hole 8. The outer surface of the aluminum insert is first dip-plated with a lead-tin alloy containing 5% tin, and the thickness of the coating is 0.1mm. It is firmly combined with the lead alloy part to ensure that the aluminum insert and the l...

Embodiment 3

[0054] The battery embodiment 3 of the present invention takes a 12V160Ah battery as an example, and the design battery dimensions are 489.5mm in length, 175mm in width and 220mm in height. The material of the battery tank cover is made of ABS resin, and the connection of the tank cover is welded by hot melting method. The specific decomposition is that the height of the battery tank is 195mm, divided into 6 cells, the wall thickness between the cells of the battery tank is 2.5mm, the thickness of the outer wall around the battery tank is 6mm, and the demoulding slope is less than 0.3%. The battery cover is 25mm high, divided into upper and lower parts, the upper part is 15mm high, the lower part is 10mm high, and the middle spacer is 3mm thick. The lower part of the battery cover is divided into 6 cells corresponding to the battery slot, and the wall thickness between the cells is 5mm. The thickness of the outer wall around it is 7mm. The upper part of the battery cover is a ...

technical field

[0001] The invention relates to a design and manufacture method of a high specific energy deep cycle long-life valve-regulated sealed lead-acid battery for an electric vehicle, especially for the charging and discharging state of each 2V single battery of a 4-24V integral battery and the change performance of temperature. Carry out timely monitoring. Background technique

[0002] At present, my country is piloting the promotion of the use of new energy electric vehicles. It greatly promotes the research and development of batteries. New energy electric vehicles require batteries to have a large capacity—satisfied with long mileage, high power—satisfied with fast startup acceleration, strong climbing ability, short charging time—fast energy replenishment, convenient monitoring and maintenance And deep cycle long life, the performance of lead-acid batteries must fully meet these requirements, has become the biggest problem in the research and development of ne...

Examples

Embodiment 1

[0041]The present invention takes a 12V100Ah storage battery as an example, and the designed external dimensions of the battery are 299.6mm in length, 173mm in width and 220mm in height. The material of the battery tank cover is made of ABS resin, and the connection of the tank cover is welded by hot melting method. The specific decomposition is that the height of the battery tank is 195mm, divided into 6 cells, the wall thickness between the cells of the battery tank is 2mm, the thickness of the outer wall around the battery tank is 5mm, and the demoulding slope is less than 0.3%. The battery cover is 25mm high, divided into upper and lower parts, the upper part is 15mm high, the lower part is 10mm high, and the middle spacer is 3mm thick. The lower part of the battery cover is divided into 6 cells corresponding to the battery slot, and the wall thickness between the cells is 5mm. The thickness of the outer wall around it is 7mm. The upper part of the battery cover is a seale...

Embodiment 2

[0050] Embodiment 2 and Embodiment 1 have exactly the same shape and size design of the battery tank cover, the same pole structure, the same voltage monitor and temperature monitor, the same grid is used to manufacture the positive and negative plates, and the battery assembly method is the same. The differences from Example 1 are described in detail below.

[0051] The 12 poles used in the 12V100Ah storage battery of Embodiment 2 of the present invention are still unified into a pole, such as Figure 4 As shown in A, the pole is composed of two parts: an aluminum insert 27 and a tin-lead alloy 28 containing 3% tin. The upper part of the aluminum insert is equipped with an M6 screw hole 9, and the lower part is provided with a through hole 8. The outer surface of the aluminum insert is first dip-plated with a lead-tin alloy containing 5% tin, and the thickness of the coating is 0.1mm. It is firmly combined with the lead alloy part to ensure that the aluminum insert and the l...

Embodiment 3

[0054] The battery embodiment 3 of the present invention takes a 12V160Ah battery as an example, and the design battery dimensions are 489.5mm in length, 175mm in width and 220mm in height. The material of the battery tank cover is made of ABS resin, and the connection of the tank cover is welded by hot melting method. The specific decomposition is that the height of the battery tank is 195mm, divided into 6 cells, the wall thickness between the cells of the battery tank is 2.5mm, the thickness of the outer wall around the battery tank is 6mm, and the demoulding slope is less than 0.3%. The battery cover is 25mm high, divided into upper and lower parts, the upper part is 15mm high, the lower part is 10mm high, and the middle spacer is 3mm thick. The lower part of the battery cover is divided into 6 cells corresponding to the battery slot, and the wall thickness between the cells is 5mm. The thickness of the outer wall around it is 7mm. The upper part of the battery cover is a ...

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