Metal bipolar plate inspection jack structure
A metal bipolar plate and hole structure technology, applied in the direction of structural parts, battery electrodes, electrical components, etc., can solve the problems of difficult access of welding tools, damage to fuel cells, and falling off of solder joints, etc. Accurate monitoring, tight and reliable connection
Active Publication Date: 2013-02-27
SUNRISE POWER CO LTD
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[0002] A fuel cell is a power generation device that converts the chemical energy stored in fuel and oxidant into electrical energy through an electrochemical reaction. The battery inspection system is a device used to monitor the battery voltage and ensure the normal operation of the battery. Usually, the fuel cell passes The bipolar plate combines multiple single cells in series to form a fuel cell stack as its application form. Metal bipolar plates are widely used in fuel cell stacks due to their high strength, excellent electrical and thermal conductivity, and good gas barrier properties. , the battery stack voltage is obtained by accumulating the voltage of multiple single cells, then accurate monitoring of the voltage of each single cell of the battery stack is the premise to ensure the safe and reliable operation of the overall battery stack, and the battery inspection system The effective connection with each single cell of the fuel cell stack plays a key role. Since there is no interface connected to the battery inspection system on the usual metal bipolar plate, the single fuel cell and the battery inspection system in the prior art The inspection system is mainly connected by welding the lead wires connected to the inspection interface on the metal bipolar plate. This method has the following problems: the welding method, due to the small thickness of the metal bipolar plate, makes each metal bipolar plate The distance between the plates is also very small, so the improper size of the solder joints in the welding parts will cause the short circuit between the metal bipolar plates and damage the fuel cell; After the small metal bipolar plates are connected to form the battery stack, it will be difficult for welding tools to enter, and re-welding is not only very difficult, but also easily damages other components in the fuel cell stack; in addition, when the fuel cell stack needs to be disassembled again, It is necessary to open the welding part, which is not only labor-intensive and time-consuming, but also easily causes damage to the parts
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[0011] Such as figure 1 , figure 2 Described 1, a metal bipolar plate inspection jack structure, is characterized in that: the inspection jack is composed of two outer walls 1 respectively connected to the anode unipolar plate 5 and the cathode unipolar plate 4; the outer walls 1 The central part is provided with a raised part 2 with a C-shaped structure; the ends of the outer wall 1 are provided with closing parts 3; the directions of the raised parts 2 on the two outer walls 1 are opposite; The closing portion 3 is fixedly connected; furthermore, the inspection jack is directly punched and formed on the contact surface of the anode unipolar plate 5 and the cathode unipolar plate 4 of the metal bipolar plate.
[0012] The invention adopts the stamping forming process to directly punch out inspection jacks on the metal bipolar plate. In practical application, the pins connected to the battery inspection system can be directly inserted into the inspection jacks of each metal ...
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The invention discloses a metal bipolar plate inspection jack structure, characterized in that: an inspection jack comprises two outer walls that are respectively connected with an anode monopolar plate and a cathode monopolar plate; the central portion of each outer wall is provided with a boss having a C-shaped structure; two ends of each outer wall are provided with nosing parts; the bosses on the two outer walls are opposite; the nosing parts at the same end of the two outer walls are fixed connected; in addition, the inspection jack is directly formed by stamping forming on the contact surface between the anode monopolar plate and the cathode monopolar plate of the metal bipolar plate. According to the invention, the connection between the inspection jack and its adaptive contact pin for connecting a battery inspection system is tight and reliable, and the plugging mode used herein is convenient and fast; the two outer walls are respectively connected with the anode monopolar plate and the cathode monopolar plate, the electric potential difference between the adjacent metal bipolar plates is single-unit battery voltage, and the monitoring is accurate.
Description
technical field [0001] The invention relates to a metal bipolar plate inspection jack structure. Background technique [0002] A fuel cell is a power generation device that converts the chemical energy stored in fuel and oxidant into electrical energy through an electrochemical reaction. The battery inspection system is a device used to monitor the battery voltage and ensure the normal operation of the battery. Usually, the fuel cell passes The bipolar plate combines multiple single cells in series to form a fuel cell stack as its application form. Metal bipolar plates are widely used in fuel cell stacks due to their high strength, excellent electrical and thermal conductivity, and good gas barrier properties. , the battery stack voltage is obtained by accumulating the voltage of multiple single cells, then accurate monitoring of the voltage of each single cell of the battery stack is the premise to ensure the safe and reliable operation of the overall battery stack, and the...
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IPC IPC(8): H01M4/86
CPCY02E60/50
Inventor 付宇徐乃涛侯中军刘超明平文李丹刘常福
Owner SUNRISE POWER CO LTD