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Resistor disc for manufacturing piezoresistor with high discharge current capacity

A varistor and resistor chip technology, which is applied in the manufacture of resistor chips, varistors, varistor cores, etc., can solve the problem of high production cost, increased varistor application cost, and large varistor volume. and other problems, to achieve the effect of improving the anti-surge performance, reducing the application cost and reducing the manufacturing cost

Inactive Publication Date: 2018-08-03
HEFEI DAZHUO ELECTRIC POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to cope with the surge current, the varistor used in the circuit often needs to have a higher flow capacity, and the varistor with a large flow capacity is generally larger in size, and the production cost is relatively high; in addition, in order to improve the flow rate of the circuit flow capacity, when used, multiple varistors will be used in combination, which will also increase the application cost of varistors

Method used

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  • Resistor disc for manufacturing piezoresistor with high discharge current capacity

Examples

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Comparison scheme
Effect test

Embodiment 1

[0015] A resistance sheet for manufacturing a high-current capacity varistor. The ceramic sheet of the resistance sheet and the conductive electrode connected to it are covered with a protective layer. According to the mass parts, the ceramic sheet is prepared from the following raw materials: 150 parts of zinc oxide , 6 parts of bismuth oxide, 3 parts of antimony trioxide, 1 part of manganese dioxide, 0.5 part of cobalt trioxide, 4 parts of cobalt dioxide, 0.5 part of niobium pentoxide, 0.4 part of lanthanum oxide, 3 parts of strontium titanate, 13 parts of nano additives.

[0016] Nano-additives contain titanium oxide, lithium oxide, and nickel oxide.

[0017] The nano-additive needs to be modified before use. The method of modification is: add the nano-additive mixture into the reaction kettle filled with n-octanol solution and immerse it, raise the temperature in the reaction kettle to 80°C, and keep it warm for 2 hours. Then the solution is filtered off, and the precipit...

Embodiment 2

[0021] A resistance sheet for manufacturing high flow capacity varistors, the ceramic sheet of the resistance sheet and the conductive electrode connected to it are covered with a protective layer, and the ceramic sheet is prepared from the following raw materials in parts by mass: 180 parts of zinc oxide , 8 parts of bismuth oxide, 5 parts of antimony trioxide, 3 parts of manganese dioxide, 2 parts of cobalt trioxide, 8 parts of cobalt dioxide, 1 part of niobium pentoxide, 0.9 part of lanthanum oxide, 6 parts of strontium titanate, 15 parts of nano additives.

[0022] The nano additives contain nickel oxide, cadmium oxide and lead oxide.

[0023] The nano-additive needs to be modified before use. The method of modification is: add the nano-additive mixture into the reaction kettle filled with n-octanol solution and immerse it, raise the temperature in the reaction kettle to 120°C, and keep it warm for 4 hours. Then the solution is filtered off, and the precipitate is sent to...

Embodiment 3

[0027] A resistance sheet for manufacturing a high-current-capacity varistor. The ceramic sheet of the resistance sheet and the conductive electrode connected to it are covered with a protective layer. According to the mass parts, the ceramic sheet is prepared from the following raw materials: 170 parts of zinc oxide , 7 parts of bismuth oxide, 4 parts of antimony trioxide, 2 parts of manganese dioxide, 1 part of cobalt trioxide, 6 parts of cobalt dioxide, 0.7 part of niobium pentoxide, 0.6 part of lanthanum oxide, 5 parts of strontium titanate, 14 parts of nano additives.

[0028] Nano-additives contain titanium oxide, nickel oxide, cadmium oxide, and lead oxide.

[0029] The nano-additive needs to be modified before use. The method of modification is: add the nano-additive mixture into the reaction kettle filled with n-octanol solution and immerse it, raise the temperature in the reaction kettle to 100°C, and keep it warm for 3 hours. Then the solution is filtered off, and ...

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Abstract

The invention belongs to the technical field of electronic components and particularly relates to a resistor disc for manufacturing a piezoresistor with high discharge current capacity. A ceramic chipof the resistor disc and a conductive electrode connected with the ceramic chip are covered with a protective layer; the ceramic chip is prepared from zinc oxide, bismuth oxide, antimonous oxide, manganese dioxide, cobaltic oxide, cobalt dioxide, niobium pentoxide, lanthanum oxide, strontium titanate, a nano additive and the like; the nano additive contains titanium oxide, lithium oxide, nickel oxide and other components; the protective layer is prepared from a binding material and bismuth glass powder and applied to the outermost layer of the resistor disc in a printed manner. Under the samesize, the piezoresistor produced from the resistor disc can bear higher surge current and is higher in discharge current capacity and lower in production cost.

Description

technical field [0001] The invention belongs to the technical field of electronic components, and in particular relates to a resistance sheet used for manufacturing a piezoresistor with high flow capacity. Background technique [0002] The varistor has high resistance at low voltage and low resistance at high voltage in the circuit. It is a typical resistance device with nonlinear volt-ampere characteristics. It is mainly used for voltage clamping when the circuit is subjected to overvoltage and absorbs excess current to protect sensitive devices. [0003] When using a varistor in a circuit, it is necessary to consider the instantaneous large current that may appear in the circuit. This instantaneous large current is called a surge current. If the surge current exceeds the acceptable range, it may cause breakdown of electronic components. This breakdown effect is often irreversible. In order to cope with the surge current, the varistor used in the circuit often needs to ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/453C04B35/622C04B35/626H01C7/105H01C17/00H01C17/28
CPCC04B35/453C04B35/622C04B35/6261C04B35/62645C04B2235/3203C04B2235/3213C04B2235/3227C04B2235/3232C04B2235/3236C04B2235/3251C04B2235/3267C04B2235/3275C04B2235/3279C04B2235/3294C04B2235/3298C04B2235/5454C04B2235/656C04B2235/658H01C7/105H01C17/006H01C17/28
Inventor 杨自芬
Owner HEFEI DAZHUO ELECTRIC POWER CO LTD
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