a power battery

Abstract

The invention provides a power battery which comprises electrolyte and a shell body (1) and further comprises a cover plate (2) arranged on the shell body (1), a positive pole (5) and a negative pole (6) both provided with threads and respectively penetrating the polar holes (4). Two polygonal locating grooves (3) are formed in the side face, close to the electrolyte, of the cover plate (2), polar holes (4) penetrating the cover plate (2) are respectively arranged in the two polygonal locating grooves (3). One ends, far away from the threads, of the positive pole (5) and the negative pole (6) are provided with clamping plates capable of being matched with the polygonal locating grooves (3), and one ends, close to the threads, of the positive pole (5) and the negative pole (6) are capable of being connected with external components through the threads. The power battery avoids the phenomenon of the twisting of the positive pole and the negative pole when the power battery is assembled with the external components, and avoids the phenomena of causing the leakage of the electrolyte, influencing conductivity of the positive pole and the cover plate and causing a short circuit and an open circuit inside the power battery due to the twisting of the positive pole and the negative pole.

Description

Technical field [0001] The invention relates to the technical field of energy power, and more specifically, to a power battery. Background technique [0002] With the increase of environmental pollution and energy shortage, new energy power has become more popular among people. As an important part of it, power batteries have been widely used in actual production and life. [0003] At present, the lithium-ion power battery commonly used by people is composed of electrolyte, shell 06, cover 02, positive pole 01, negative pole 04, plastic seal 05, bus bar, explosion-proof device 03, etc. (such as figure 1 As shown), the positive pole 01 and the negative pole 04 are generally processed into the form of studs to realize the function of connecting external components while conducting electricity. In addition, the positive pole 01 and the negative pole 04 also play The role of tightening the plastic seal 05 connected to it can prevent electrolyte leakage. When the lithium-ion power batt...

AI Technical Summary

Problems solved by technology

When the lithium-ion power battery is connected with external components, it is necessary to apply force to the positive pole 01 and the negative pole 04 so that the positive pole 01 and the negative pole 04 are connected to the external components through threads and conduction. However, during the connection process , due to the unbalanced force on the positive pole 01 and the negative pole 04, it is easy to cause the twisting of the positive pole 01 and the negative pole 04, and then drive the bus bar to twist, causing a short circuit or open circuit inside the lithium-ion power battery, and also causing There is a gap in the riveting between the positive pole 01 and the negative pole 04 and the cover plate 02, resulting in the leakage of the electrolyte, resulting in very serious consequences; the lithium-ion power battery requires the shell 06 to be charged and the same as the positive pole 01. If the positive pole 01 twists, there will also be a gap between the riveting between it and the cover plate 02, which will increase the contact resistance between the positive pole 01 and the cover plate 02, and affect the electrical conduction between the casing 06 and the positive pole 01

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