JPH0235169Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an intercell connection structure of a lead-acid battery.

BACKGROUND TECHNOLOGY Conventionally, lead-acid batteries have been used in a 6V system consisting of a combination of 3 or 6 cells, a 12V system, or in an arbitrary combination of multiple cells. At this time, the connections between the cells are made so as to have the shortest distance in consideration of the voltage drop due to the resistance component during discharge.

However, recently, completely sealed lead-acid batteries, so-called maintenance-free batteries, have been developed and are now widely used as power sources for general home appliances.As their uses have diversified, battery shapes and terminal positions have also changed. I came. In particular, the requirement is to make it impossible to reverse insert the battery during use.

Therefore, when connecting even-numbered cells in conventional cell-to-cell connections, the positive and negative terminals are in the same direction, and reverse insertion basically does not occur, but when connecting odd-numbered cells, the positive and negative terminals are on a diagonal line. Therefore, reverse insertion is likely to occur, which may destroy the electronic equipment or cause the motor etc. to rotate in the reverse direction.

Therefore, a method of using a conductor made of copper wire plated with nickel or tin was proposed as a method for arbitrarily taking out the terminals. There are two ways to use this method: one for connecting cells and the other for drawing out terminals.

Problems that the invention aims to solve: When copper wire is used to connect cells or draw out terminals, the welded part must be sealed with epoxy resin, etc., but if this seal is not perfect, the electrolyte will leak due to capillary action. It creeps up and forms a local battery at the weld, causing the connection to corrode and break.
For this purpose, it was necessary to completely embed the copper wire with epoxy resin, etc., which was a very time-consuming welding process.

Means to solve the problem By connecting adjacent cells with different types of electrodes diagonally using lead parts, there is no local battery formation, and even when odd numbered cells are connected, the positive and negative electrodes are connected in the same direction. A terminal can be provided.

Function: The welding of lead parts is easy, and since there are no dissimilar metals, there is no risk of local battery formation, and sealing with epoxy resin can be done by paying attention only to airtightness between cells. .

Example An embodiment of the present invention will be described with reference to the drawings.

Three cells, which are the smallest set of odd cells, that is
In a 6V battery, a lead component 3 was used as a means for drawing out the positive electrode terminal 1 and the negative electrode terminal 2 in the same direction to connect different types of electrodes diagonally. Connections were made by gas welding.

Effects of the invention As mentioned above, the work is easy because welding is performed using diagonal lead parts, and since no dissimilar metals are used, there is a possibility of local battery formation due to sulfuric acid seepage. It has great practical value as it does not corrode and does not corrode.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention. 1 is a positive terminal, 2 is a negative terminal, and 3 is a lead part.

Claims (1)

[Scope of utility model registration request] A lead-acid battery consisting of an odd number of cells, characterized in that connections between different types of electrodes with adjacent cells are made diagonally using lead parts, and positive and negative electrode terminals are provided in the same direction.