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Battery management device and method with integrated safety unit

A technology of battery management and safety unit, which is applied to power devices, battery/fuel cell control devices, electric vehicles, etc. It can solve the problem of communication without strict protection measures, and achieve the effect of control safety.

Active Publication Date: 2021-07-16
ZHICHEAUTO TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the information exchange and state jump between BMS and the vehicle or equipment are realized through CAN communication, and there are no strict protection measures for communication. The interception of messages on the CAN network means that the data inside the battery system is stolen, and can be easily is controlled, therefore, it is necessary to provide an integrated safety battery management device design

Method used

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  • Battery management device and method with integrated safety unit
  • Battery management device and method with integrated safety unit
  • Battery management device and method with integrated safety unit

Examples

Experimental program
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Effect test

Embodiment 1

[0029] figure 1 A schematic diagram showing information interaction of a battery management device integrated with a safety unit according to the present invention.

[0030] Such as figure 1 As shown, in this embodiment, the battery management device integrated with the safety unit according to the present invention may include: a battery management device 101, which collects battery information, controls battery state jumps, and protects the battery; an encryption chip , the encryption chip is set on the battery management device 101 for encrypting interactive communication data.

[0031] In this embodiment, the data of the battery management device is not easy to be stolen through technical encryption, and the battery system is not easy to be controlled, so that the battery system is more secure.

[0032] In one example, the battery management device 101 is connected to the handheld device 102 , the vehicle controller 104 and the charging device 103 through a CAN bus.

[...

Embodiment 2

[0047]According to an embodiment of the present invention, a battery management method integrating a security unit is provided, the method includes the following steps: setting a private key for the user, and performing the first user binding; the vehicle controller and / or the handheld device sending the user setting The private key is sent to the battery management device; the battery management device judges whether the private key is correct, and if it is incorrect, the communication is terminated directly; otherwise, the private key is sent to the encryption chip; the encryption chip uses the secret key algorithm to generate a new secret key in real time. key, and send the new key to the battery management device, the battery management device sends the new key to the vehicle controller and / or handheld device, and uses the new key for encrypted communication; the battery management device judges and handles Whether the communication between the devices is over, if it is jud...

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Abstract

The invention discloses a battery management device and method with an integrated safety unit, comprising: a battery management device, the battery management device collects battery information, controls battery state jumps, and protects the battery; an encryption chip, the encryption chip It is set on the battery management device and is used for encrypting interactive communication data. By adopting the battery management device integrated with the security unit provided by the present invention, the battery management device can effectively protect the internal data of the battery, and the control of the battery system by implementing an encryption algorithm is also safer.

Description

technical field [0001] The invention belongs to the field of intelligent electric vehicles, and more specifically relates to a battery management device and method integrating a safety unit. Background technique [0002] In consideration of energy and environment, electric vehicle technology has been rapidly developed under the impetus of various governments and major automobile companies. With the development of battery technology, electric vehicles are rapidly entering people's lives, and the market share of electric vehicles will increase. [0003] Batteries are the core of electric vehicles. A set of high-safety battery management devices is particularly important for electric vehicles. Currently, battery management devices on the market focus on solving functional problems, and the consideration of safety is far from enough. [0004] The current battery management device is mainly divided into a master-slave architecture. The main board BMS realizes the collection of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/10B60L58/12B60L3/00
CPCB60L3/0046B60L58/10Y02T10/70Y02T90/16
Inventor 王艳明梅彦铮沈海寅郭成季申翟翌华
Owner ZHICHEAUTO TECH BEIJING
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