Lead storage battery

Abstract

The invention provides a lead storage battery, which have a plurality of single cells (12). Each of the single cells includes an electrode plate group (11), an electrolyte and a single cell chamber (14). The electrode plate group (11) is accommodated in the single cell chamber (14) in the state of being impregnated in the electrolyte. The electrode plate group is composed of multiple positive electrode plates (2) and multiple negative electrode plates (3) that are alternately arranged via separators (4). Each positive electrode plate (2) comprises a positive electrode current collector with an electrode lug (9), and a positive active material layer held by the positive electrode current collector. Each negative electrode plate (3) comprises a negative electrode current collector with an electrode lug (10), and a negative active material layer held by the negative electrode current collector. The invention is characterized in that a positive electrode busbar (6) of the positive electrode plates of one single cell battery mentioned above and a negative electrode busbar (5) of the negative electrode plates are respectively connected with the respective negative electrode busbar (5) of the negative electrode plates and the positive electrode busbar (6) of the positive electrode plates of single cells adjacent to the single cell through non-electrode post direct welding, so that the plurality of single cells are connected in series. Moreover, the ratio of the sectional area of the electrode lug of each positive electrode plate to the sectional area of the electrode lug of each negative electrode plate is greater than or equal to 0.6 and less than 1.0.

Description

technical field [0001] The invention relates to a lead storage battery. More specifically, the present invention relates to lead storage batteries for mains power applications. Background technique [0002] In addition to being used as a power source for starting vehicles and as a backup power source, lead-acid batteries are also widely used as main power sources, that is, as power sources for independent charging and discharging equipment such as electric vehicles, electric bicycles, electric motorcycles, electric scooters, small Power sources for electric mopeds, golf carts, etc., batteries for solar energy, etc. In these applications, the working characteristics of lead-acid batteries are: large current when starting, small discharge current when driving, and long discharge time. At the same time, it is also required to reduce the maintenance of lead-acid batteries, especially to have a longer service life. In terms of battery life extension, the usual practice is to i...

AI Technical Summary

Problems solved by technology

The technical problem to be solved is: during the use of the lead-acid battery, the stretching of the positive plate is prone to occur, and the stretching cannot be fully absorbed by the saddle, and the bending of the above-mentioned positive plate will cause it to disjoint with the adjacent negative electrode. A short circuit occurs between the plates, resulting in reduced capacity and battery failure

Since the electric vehicle cannot charge the battery while driving, the longer the driving distance, the deeper the discharge depth, and it is necessary to frequently brake and start with a large current when facing traffic lights during driving, even when the battery is low. It is still necessary to start with a large current, which is most likely to cause over-discharge

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