Connection structure of monomer sodium-sulfur cell in sodium-sulfur cell module and method

A sodium-sulfur battery and connection structure technology, which is applied to structural parts, battery pack parts, circuits, etc., can solve the problems of improving modules and reducing output power, so as to reduce the possibility of corrosion, reduce contact resistance, and maintain constant contact resistance Effect

Inactive Publication Date: 2013-06-19
SHANGHAI ELECTRIC SODIUM SULFUR ENERGY STORAGE TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the connecting wires in the sodium-sulfur battery module are generally multi-strand copper core wires, which are easily corroded to increase the internal resistance of the module and reduce the output power

Method used

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  • Connection structure of monomer sodium-sulfur cell in sodium-sulfur cell module and method

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Embodiment Construction

[0014] see figure 1 In order to better understand the technical solution of the present invention, the inventors of the present invention will describe in detail below through specific embodiments in conjunction with the accompanying drawings:

[0015] see figure 1 , a connection structure of a single sodium-sulfur battery in a sodium-sulfur battery module of the present invention, comprising a first single sodium-sulfur battery 1 and a second single sodium-sulfur battery 2, a first bus bar 3 and a second bus bar 4 . The first single sodium-sulfur battery is provided with a first negative electrode tab 11 and a first positive electrode tab 12, and the second single sodium-sulfur battery 2 is provided with a second negative electrode tab 21 and a second positive electrode tab 22;

[0016] One ends of the first bus bar 3 and the second bus bar 4 are fixed to the first negative tab 11 of the first single sodium-sulfur battery 1 through the first fastener 5 . The other ends of ...

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Abstract

The invention discloses a connection structure of a monomer sodium-sulfur cell in a sodium-sulfur cell module, which belongs to the energy storage field, and comprises a first monomer sodium-sulfur cell and a second monomer sodium-sulfur cell, a first cathode tab and a first anode tab are provided on a first monomer sodium-sulfur cell, a second cathode tab and a second anode tab are provided on a second monomer sodium-sulfur cell; and the first cathode tab and the second anode are connected through two roots of busbars. A technical effect is characterized in that the first cathode tab on two roots of busbars and the first monomer sodium-sulfur cell as well as the second anode tab on the second monomer sodium-sulfur cell form a sandwich structure, the contact resistance in the connection structure is effectively reduced, because the cross section of the busbars is in a rectangular shape, under the condition that the cross section areas are same, the surface area of the busbars is smaller, thereby the possibility that the busbars is corroded by sulfur steam or sodium polysulfide steam is reduced, and the contact resistance of the connection structure can keep long time constancy.

Description

technical field [0001] The invention relates to a connection structure and method of a single sodium-sulfur battery in a sodium-sulfur battery module in the field of energy storage. Background technique [0002] Sodium-sulfur battery is a high-capacity battery that operates at high temperature. When used as energy storage, generally multiple single-unit sodium-sulfur batteries are placed in an incubator, and the single-unit sodium-sulfur batteries are connected in a specific series-parallel manner to achieve a certain power and Voltage. The effective output power of an energy storage sodium-sulfur battery is an extremely important indicator when it is used as a power storage application. The effective output power is inversely proportional to the internal resistance of the module. The internal resistance of the module is mainly composed of the internal resistance of the battery, the resistance of the connecting wire, and the contact resistance. At present, the connecting w...

Claims

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Application Information

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IPC IPC(8): H01M2/20H01M2/26
CPCY02E60/10
Inventor 杨建平刘宇茅雁俞国勤邵宇鹰陆振民赵沛然徐敏
Owner SHANGHAI ELECTRIC SODIUM SULFUR ENERGY STORAGE TECH
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