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Intelligent protective circuit and intelligent protective method for storage battery of hybrid power automobile

A technology for hybrid electric vehicles and intelligent protection, applied in electric vehicles, vehicle energy storage, electric traction, etc., can solve problems such as overuse, unrecoverable battery damage, and inability to start vehicles smoothly

Active Publication Date: 2012-11-28
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a hybrid car does not protect the battery like a traditional car, then when the user parks the vehicle in the garage for a week or even a month, the battery in the car will be completely emptied, causing the user to be unable to start the vehicle smoothly when entering the car, and even worse. Seriously, if the battery continues to be placed after the effective capacity of the battery is discharged, it may cause irreversible damage to the battery
[0004] In view of this, it is necessary to propose an intelligent protection circuit and intelligent protection method for hybrid electric vehicle batteries to prevent excessive use of batteries and even irreparable damage

Method used

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  • Intelligent protective circuit and intelligent protective method for storage battery of hybrid power automobile
  • Intelligent protective circuit and intelligent protective method for storage battery of hybrid power automobile
  • Intelligent protective circuit and intelligent protective method for storage battery of hybrid power automobile

Examples

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Embodiment 1

[0069] figure 1 For the first specific embodiment of the intelligent protection circuit for the storage battery of a hybrid electric vehicle provided by the present invention, the storage battery (not marked) connected to the first protection circuit of this embodiment is an example of a 12V storage battery for a hybrid electric vehicle. The negative pole of the 12V storage battery is grounded, and the positive pole is connected to A protection circuit is connected, the protection circuit comprising:

[0070] The first start switch 21, the first end of the first start switch 21 is connected to the positive pole of the storage battery, the second end of the first start switch 21 is connected to the fourth end of the keyless entry system 22 and the whole The third end of the vehicle control unit 23 is connected, the third end of the first start switch 21 is connected with the first end of the keyless entry system 22 and the first end of the battery management system 24; the firs...

Embodiment 2

[0099] image 3 It is the second specific embodiment of an intelligent protection circuit for a battery of a hybrid electric vehicle provided by the present invention.

[0100] The difference between the second embodiment and the first embodiment is that the protection circuit provided by the second embodiment adopts two start switches, the second start switch 34 and the third start switch 35, and the second start switch 34 is used to control the charging of the storage battery to the The keyless entry system 22 and the vehicle control unit 23 send electrical signals, and the third start switch 35 is used to control the battery to supply power to the keyless entry system 22 and the battery management system 24; the second The first end of the start switch 34 is connected to the positive pole of the battery, the second end of the second start switch 34 is connected to the fourth end of the keyless entry system 22 and the third end of the vehicle control unit 23, and the third s...

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Abstract

The invention discloses an intelligent protective circuit for a storage battery of a hybrid power automobile. The intelligent protective circuit is suitable to be electrically connected with the storage battery, and comprises a power utilization unit and a suicide circuit, wherein the suicide circuit is used for switching on the storage battery and the power utilization unit; the power utilization unit is applied to detecting the voltage of the storage battery; and when the voltage of the storage battery is lower than the preset battery voltage, the power utilization unit controls the suicide circuit to switch off to cut off the power supply of the storage battery to the power utilization unit. The invention also provides an intelligent protective method for a storage battery of a hybrid power automobile. The intelligent protective method comprises steps that: the power utilization unit detects the voltage of the storage battery at a first frequency; and when detecting that the voltage of the storage battery is lower than the preset battery voltage, the power utilization unit controls the suicide circuit to switch off to cut off the power supply of the storage battery to the power utilization unit. By the intelligent protective circuit and the intelligent protective method for the storage battery of the hybrid power automobile, the storage battery can be prevented from being overused and even being subjected to irreparable damage.

Description

technical field [0001] The invention relates to an intelligent protection circuit and an intelligent protection method for a storage battery, in particular to an intelligent protection circuit and an intelligent protection method for a storage battery of a hybrid electric vehicle. Background technique [0002] When the vehicle is locked and stationary, the controllers still operate, and the required dark current can be provided by the battery. The battery capacity of traditional cars is generally larger, this is because the car needs the battery to provide current to start the engine during the starting process. Take 12V lead-acid battery as an example. Generally, the battery capacity of miniature cars is between 32-45Ah, that of small cars is between 42-60Ah, that of medium and high-end large-displacement vehicles is generally between 60-90Ah, and that of luxury large-displacement models is even higher. A battery with a capacity of about 120Ah will be used. [0003] Howev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18
CPCY02T10/7005Y02T10/70
Inventor 祝仕平郝英
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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