Vehicle starting storage battery

Abstract

The present invention discloses a vehicle starting storage battery. The vehicle starting storage battery comprises: a first storage battery having an anode connected with a first post and a cathode connected with a common port; a second storage battery having an anode connected with a second post and a cathode connected with the common port; a diode having an anode connected with the second post and a cathode connected with the first post; a first switch connected between the anode of the first storage battery and the first post / connected between the cathode of the storage battery and the common port; and a controller connected with the anode of the first storage battery and the first switch, wherein the controller controls disconnection of the first switch when it is detected that a voltage value of the first storage battery is smaller than a reserved voltage threshold in a continuous time threshold, and the first storage battery reserves standby electric quantity, and the controllercontrols connection of the switch when standby electric quantity signals are detected, and the first storage battery supplies the standby electric quantity. The vehicle starting storage battery can effectively prolong the service life of the starting power supply, can reduce the cost of the vehicle starting storage battery and has high reliability.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to an automobile starter storage battery. Background technique [0002] Such as figure 1 As shown, the existing automotive power supply system is mainly composed of a battery and a generator. As an important part of automotive electrical appliances, the battery plays a major role in the car: when the engine is started, it supplies power to the starter and ignition system; when the engine runs at a low speed When the generator is running, it supplies power to the electrical equipment and the magnetic field winding of the generator; when the engine is running at medium or high speed, it converts the electrical energy generated by the generator into chemical energy for storage; when the generator is overloaded, it assists the on-board generator to supply power to the electrical equipment. [0003] At present, the automotive industry basically uses lower-cost lead-acid batteries...

AI Technical Summary

Problems solved by technology

[0003] At present, the automotive industry basically uses lower-cost lead-acid batteries as automotive batteries. However, lead-acid batteries have the following defects: (1) The charge and discharge times of lead-acid batteries are generally only 300 to 500 times, making the use of lead-acid batteries The service life is 2 to 3 years, and its service life is short; (2) The active substance of the lead-acid battery itself contains impurities, the purity of the electrolyte is not high, or the lead-acid battery is placed for a long time, which will cause the lead-acid battery to self-discharge seriously; (3) The electrolyte in lead-acid batteries is usually prepared by a certain ratio of pure sulfuric acid and distilled water. There is a danger of freezing the electrolyte in a low-temperature environment, which makes lead-acid batteries not resistant to low temperatures.

[0004] The above defects of the lead-acid storage battery make the following technical problems in the existing automobile starting storage battery: (1) the service life of the existing automobile is usually 10 to 15 years, while the service life of the lead-acid storage battery is 2 to 3 years. The battery is replaced 3 to 5 times during the service life of the car. The replacement frequency is high, which increases the cost of use, and the battery replacement operation is very troublesome, which affects the user experience; (2) The self-discharge of the lead-acid battery will reduce the storage capacity of the battery, causing the car After a long stop, the power of the car starter battery is insufficient, and the car starter battery cannot supply power to the starter; (3) The lead-acid battery is not resistant to low temperature, so that the car starter battery cannot start the engine in a low temperature environment

This system can retain the power in the first battery to a certain extent, but the system still has the problems of short service life and low temperature resistance

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