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Battery control system and vehicle system with battery control system

A battery control and battery technology, which is applied in the field of vehicle systems and battery control devices, can solve the problems of reduced energy saving effect and achieve the effect of prolonging battery life

Inactive Publication Date: 2012-03-21
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] As the easiest way to solve this problem, the excessive accumulation of ions is prevented by stopping the discharge at the same time during the discharge process, and the discharge is not performed for more than a predetermined time. However, if this method is adopted, the charge and discharge capacity decreases and the discharge is stopped The corresponding amount of the degree, the energy saving effect will be reduced

Method used

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  • Battery control system and vehicle system with battery control system
  • Battery control system and vehicle system with battery control system
  • Battery control system and vehicle system with battery control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] figure 1 A configuration example of the battery control device in the present invention is shown.

[0047] The battery control device 1 is composed of battery modules 2A to 2D, circuit breakers 3A to 3D that freely switch between the energized state and the disconnected state, and a battery integrated unit 9 that controls the entire control device.

[0048] In addition, the battery modules 2A to 2D include battery packs 4A to 4D composed of a plurality of battery cells, current detection parts 5A to 5D for detecting current flowing through the battery packs, and voltage detection parts 6A to 5D for detecting pack voltages of the battery packs. 6D, temperature sensors 7A to 7D that measure the temperature in the module, and battery monitoring units 8A to 8D that monitor each battery. Inverters and the like are connected to E1 and E2.

[0049]The battery packs 4A to 4D are units in which a plurality of batteries capable of storing and releasing electric energy such as n...

Embodiment 2

[0080] In this embodiment, a setting method of a timeout in consideration of the degree of deterioration of each of the battery packs 4A to 4D constituting the battery modules 2A to 2D of the battery control device 1 will be described. The unbalanced degree of deterioration is due to individual differences in batteries or differences in the magnitude of the flowing current. In addition, due to failure or the like, only a part of the batteries need to be replaced with new ones.

[0081] From this, it can be seen that, when charging and discharging the battery packs 4A to 4D for the modules having a difference in degree of deterioration among the batteries of the battery packs 4A to 4D, the battery packs 4A to 4D can be charged and discharged so that the degrees of deterioration are equalized, and as a result, a longer life can be achieved. .

[0082] As an index of the degree of deterioration, the same resistance increase rate defined by the internal resistance value as in Exa...

Embodiment 3

[0087] In this embodiment, a case where there are a plurality of battery control devices each including a plurality of modules, and a timeout is provided between the battery control devices will be described. As an example, a case where one battery control device is installed and operated in each of the leading vehicle and the trailing vehicle of the hybrid railway is given.

[0088] Figure 11 The system at this time is shown. The part shown at 20A is the drive system A of the leading vehicle, and the part shown at 20B is the drive system of the trailing vehicle. Each drive system includes an engine 12 , a generator 13 , a converter 14 , an inverter 15 , a controller 11 , and a battery control device 1 including a plurality of modules. Each drive system transmits electric power obtained from the engine or battery control unit to the electric motor to drive the axle. In addition, at the time of deceleration, the electric motor charges the battery pack of the battery control...

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Abstract

The present invention provides a battery control system and a vehicle system with the battery control system. Each module includes a circuit breaking section configured to control an energization state and a circuit breaking state of the battery in such a manner that during discharge, the circuit breaking sections of a certain number of modules are sequentially activated to halt discharge from each of the certain number of modules for a predetermined halt time, while an amount of discharge from remaining modules is increased to complement a decrease in the amount of discharge resulting from the halt of discharge from the certain number of modules. The battery control system enables as large an amount of charge and discharge to be carried out as possible while allowing each battery to complete a target life, without the need to increase the capacity of the battery.

Description

technical field [0001] The present invention relates to a battery control device equipped with a battery such as a secondary battery, and a vehicle system equipped with the battery control device. Background technique [0002] As a countermeasure against environmental problems such as global warming, the spread of secondary batteries has been promoted. It is known that secondary batteries such as lead, nickel metal hydride, and lithium batteries are installed in automobiles or railways, and the battery is charged with electric power obtained by regenerative braking, and the fuel consumption is improved when the electric power is used for acceleration, etc. [0003] In general, secondary batteries deteriorate rapidly due to repeated charge and discharge cycles. The deterioration index includes two indexes of capacitance and internal resistance. With the acceleration of deterioration, the capacitance decreases and the internal resistance increases. In order to design a syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48H01M10/42B60L11/18B60L50/15
CPCH02J7/0024Y02T10/7055H01M10/441H01M10/482H01M10/486B60L15/32B60L2200/26B60L2240/545B60L2240/547B60L2240/549G01R31/392G01R31/396B60L58/22B60L58/25B60L58/15Y02T10/70Y02E60/10
Inventor 本田光利山内修子佐佐木宽文山本恒典
Owner HITACHI LTD
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