Battery management system and method for controlling the battery management system

A battery management system and battery control technology, applied in battery/fuel cell control devices, control devices, electric vehicle charging technology, etc.

Active Publication Date: 2021-08-20
VOLVO TRUCK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the described system only gives a limited view of battery characteristics and it is therefore desirable to provide an improved and more detailed battery management system

Method used

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  • Battery management system and method for controlling the battery management system
  • Battery management system and method for controlling the battery management system
  • Battery management system and method for controlling the battery management system

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Embodiment Construction

[0032] In this detailed description, various embodiments of the battery control system and method according to the present invention are described primarily with reference to a heavy-duty vehicle that includes a hybrid propulsion system that is a battery-powered electric motor and an internal combustion engine combination form. It should be noted, however, that the various embodiments of the invention described are equally applicable to a wide variety of hybrid and all-electric vehicles.

[0033] figure 1 is a flowchart outlining the general steps of a method of controlling a vehicle battery management system 100 according to an embodiment of the present invention. will refer to include figure 2 The battery management system 100 shown in the vehicle 110 is further described in figure 1 Methods. The battery management system includes a battery 102 and a battery control unit 104 configured to control the battery 102 .

[0034] The battery control unit 104 may be a dedicate...

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Abstract

The invention relates to a method of controlling a battery management system of a vehicle comprising a battery arranged in a vehicle, the battery being controlled by a battery control unit comprising a relationship describing the state of the battery and the characteristics of the battery as a function of time battery model. The method comprises: in the control unit, measuring at least one battery sensor output over time of the battery; determining a battery state based on the measured battery sensor output; updating the battery model based on the determined battery state, thereby forming an updated receiving a second battery model; and combining the received second model with the existing battery model. The invention also relates to a battery management system and a vehicle comprising such a battery management system.

Description

technical field [0001] A battery management system for controlling a battery in a vehicle, and a method for controlling such a battery management system. [0002] The invention can find application in heavy vehicles, (eg trucks, buses) and construction equipment. Although the invention will be described in relation to a bus, the invention is not limited to this particular vehicle, but may also be used in other vehicles, such as passenger cars and heavy vehicles. Background technique [0003] In a hybrid or electric vehicle, it is important to have a good understanding of the battery characteristics for various operating conditions. To achieve this, electric vehicles often include a battery management system responsible for monitoring the state of the battery. [0004] In particular, the purpose of the battery management system is: (1) energy level state monitoring, that is, state of charge estimation; (2) power capacity state monitoring; (3) maintaining the safe operation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/382
CPCB60L2240/54B60L2240/545B60L58/10B60L58/12G01R31/367Y02T10/70B60L3/0046B60L2200/18B60L2200/36B60L2200/40B60Y2200/11B60Y2200/143B60Y2200/145B60Y2200/41Y02T90/16B60K6/22B60Y2200/91B60Y2200/92
Inventor 乔纳斯·赫尔格伦
Owner VOLVO TRUCK CORP
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