Electrochemical cell and safety resistor therefor专利检索-光电化学电池太阳能电池太阳能专利检索查询-专利查询网

Electrochemical cell and safety resistor therefor

阅读：327发布：2021-09-15

专利汇可以提供Electrochemical cell and safety resistor therefor专利检索，专利查询，专利分析的服务。并且An electrochemical cell is disclosed having a resistive element interposed between a cell electrode and its corresponding terminal. The resistive element acts as a safety resistor and is a high resistivity material which has a high temperature coefficient of resistance. The element significantly lessens the high flash amperage current which is characteristic of some electrochemical cells, such as nickel-cadmium cells. The resistance of the element preferably has a value as determined in accordance with the equation:

WHERE Ra is the ohmic value of the element; E is the open circuit voltage of the cell; Ii is the initial flash current of the cell in the absence of the element; and Ip is the flash current of the cell with the element present in the cell.，下面是Electrochemical cell and safety resistor therefor专利的具体信息内容。

权利要求

1. AN ELECTRIC CELL HAVING A PAIR OF ELECTRODES OF OPPOSIT POLARITY, A SEPARATOR BETWEEN SAID ELECTRODES, AN ELECTROLYTE, AND TERMINALS FOR CONNECTING SAID CELL IN A CIRCUIT, AND A RESITIVE ELEMENT INTERPOSED IN THE CURRENT PATH CONNECTING ONE OF SAID ELECTRODES WITH ONE OF SAID TERMINALS, SAID RESISTIVE ELEMENT BEING MADE OF A METALLIC MATERIAL OF HIGH RESISTIVITY, SAID RESISTIVE ELEMENT BEING INTERNALLY CONNECTED BETWEEN SAID ELECTRODE AND SAID TERMINAL, SAID RESISTIVE ELEMENT BEING NONCORROSIVE IN SAID ELECTROLYTE AND BEING CAPABLE OF LIMITING THE MIXIUM DISCHARGE CURRENT OF SAID CELL TO A SAFE LEVEL WHILE NOT AFFECTING THE NORMAL CELL CHARACTERISTICS AND PROVIDING SUFFICIENT RESISTANCE TO REDUCE THE FLASH AMPERAGE CURRENT OF SAID CELL TO A SAAFE LEVEL, SAID RESISTIVE ELEMENT HAVING A VALU E AS DETERMINED BY THE EQUATION:

2. AN ELECTRICA CELL HAVING A PAIR OF ELECTRODES OF OPPOSITE POLARITY, A SEPARATOR BETWEEN SAID ELECTRODES, AN ELECTROLYTE, ANDTERMINALS FOR CONNECTING SAID CELL IN A CIRCUIT, AND A RESISTIVE ELEMENT INTERPOSED IN THE CURRENT PATH CONNECTING ONE OF SAID ELECTRODES WITH ONE OF SAID TERMINALS, SAID RESISTIVE ELEMENT BEING MADE OF A METALLIC MATERIAL OF HIGH RESISTIVITY AND PROVIDING SUFFICIENT RESISTANCE TO REDUCE THE FLASH AMOERAGE CURRENT OF SAID CELL TO A SAFE LEVEL, SAID RESISTIVE ELEMENT HAV ING A VALUE AS DETERMINED BY THE EQUATION:

3. AN ELECTRIC CELL HAVING A CONTAINER, A PAIR OF ELECTRODES OF OPPOSITE POLARITY (POSITIVE AND NEGITIVE), A SEPARATOR BETWEEN SAID ELECTRODES, AN ELECTROLYTE, TWO TERMINALS (POSITIVE AND NEGATIVE) FOR CONNECTING SAID CELL IN A CIRCUIT, AND A RESIS TIVE ELEMENT WITHIN THE CELL CONTAINER INTERPOSED IN THE CURRENT PATH CONNECTING AT LEAST ONE OF SAID ELECTRODES WITH ONE OF SAID TERMINALS, SAID RESISTIVE ELEMENT BEING MADE OF A METALLIC MATERIAL OF HIGH RESISTIVITY AND BEING IN PHYSICAL CONTACT WITH SAID ELECTRODE TO WHICH IT IS CONNECTED WHEREBY THE ELECTRODE ACTS AS A HEAT SINK TO DISSIPATE HEAT GENERATED BY THE CURRENT FLOWING THROUGH THE RESISTIVE ELEMENT, AND SAID RESISTIVE ELEMENT BEING NON-CORROSIVE IN SAID ELECTROLYTE AND HAVING A HIGH TEMPERATURE COEFFICIENT OF RESISTANCE WHEREBY AS THE ELEMENT HEATS UP DURING USE OF THE CELL THE RESISTANCE INCREASES AND RESTRICTS THE MAXIUM CURRENT FLOW TO A SAFE LEVEL.

4. An electric cell of claim 3 wherein the resistance value of said resistive element is determined by the equation:

5. An electric cell of claim 4 wherein Ra ranges from about 0.03 ohm to about 0.15 ohm.

6. An electric cell of claim 4 wherein there are two resistive elements, one being connected to the positive electrode and the positive terminal and the other being connected to the negative electrode and the negative terminal.

7. An electric cell of claim 4 wherein there is an insulating material enclosing said resistive element, said insulating material being capable of withstanding temperatures up to 650*C.

8. An electric cell of claim 6 wherein Ra for both resistive elements ranges from about 0.03 ohm to about 0.15 ohm.

9. AN ELECTRIC BATTERY COMPRISING A BATTERY CONTAINER AND HAVING AT LEAST ONE FULLY ASSEMBLE SEALED CELL WITHIN SAID BATTERY CONTAINER, SAID BATTERY CONTAINER HAVING TWO TERMINAL CONTACTS FOR MAKING ELECTRICAL CONTACT WITH THE POSITIVE AND NEGATIVE CELL TEERMINALS, RESISTIVE ELEMENT CONNECTING AT LEAST ONE CELL TERMINAL WITH THE CORRESPONDING TERMINAL CONTACT OF SAID BATTERY CONTAINER, SAID RESISTIVE ELEMENT BEING MADE OF A METALLIC MATERIAL HAVING A HIGH RESISTIVITY AND A HIGH TEMPERATURE COEFFICIENT OF RESISTANCE WHEREBY AS THE ELEMENT HEATS UP DURING USE OF THE BATTERY THE RESISTANCE INCREASES AND RESTRICTS THE MAXIMUM CURRENT FLOW OF THE BATTERY TO A SAFE LEVEL.

10. An electric battery of claim 9 wherein the resistance value of said resistive element is determined by the equation:

11. An electric battery of claim 10 wherein Ra ranges from about 0.03 ohm to about 0.15 ohm.

12. An electric battery of claim 10 wherein there are two resistive elements, one being connected to a positive cell terminal and the positive battery terminal and the other being connected to a negative cell terminal and the negative battery terminal.

说明书全文

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Electrochemical cell and safety resistor therefor

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