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Power supply system, transmission equipment, and power transmission method

A technology of power supply and power transmission, applied in the direction of electric braking system, load supply circuit, control system, etc., can solve the problem that the deterioration of the power storage device is easy to progress rapidly, so as to ensure the stability, improve the stability, and suppress the deterioration. Effect

Active Publication Date: 2019-04-09
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Here, when a high-capacity power storage device is usually discharged with frequent output fluctuations or high-rate discharge, the deterioration of the power storage device tends to progress rapidly.
[0012] Therefore, in the system of Patent Document 1, the deterioration of the high-capacity power storage device may progress prematurely.

Method used

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  • Power supply system, transmission equipment, and power transmission method
  • Power supply system, transmission equipment, and power transmission method
  • Power supply system, transmission equipment, and power transmission method

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no. 1 approach

[0093] Below, refer to Figure 1 to Figure 19 , the first embodiment of the present invention will be described. refer to figure 1 , The power supply system 1 of the present embodiment is a system that supplies power to an electric motor 100 as an example of an electric load.

[0094] This power supply system 1 is mounted on a conveyance device using the electric motor 100 as a propulsion generating source, such as an electric vehicle (not shown), in an example of the present embodiment. In this case, electric motor 100 can perform regenerative operation in which kinetic energy of an electric vehicle (hereinafter, simply referred to as a vehicle) is used to output regenerative power, in addition to power operation in which electric power is supplied to generate driving force.

[0095] The power supply system 1 includes a first power storage device 2 and a second power storage device 3 as power sources, a power transmission path 4 arranged between an electric motor 100 , the ...

no. 2 approach

[0334] Next, refer to Figure 20 and Figure 21 , the second embodiment of the present invention will be described. It should be noted that this embodiment differs from the first embodiment only in the control process during regenerative operation of the electric motor 100 . Therefore, description of the same items as those in the first embodiment will be omitted.

[0335] In the present embodiment, the control processing of the electric power transmission control unit 41 during regenerative operation of the electric motor 100 is performed in a predetermined control processing cycle such as Figure 20 Execute as shown in the flowchart.

[0336] Specifically, the electric power transmission control unit 41 acquires the detected value of the second remaining capacity SOC2 and the requested regeneration amount G_dmd of the electric motor 100 in STEP 61 . The processing of this STEP61 is the same as the processing of STEP51 of the first embodiment.

[0337] Next, in STEP 62 ,...

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Abstract

An object of the present invention is to provide a power supply system, a transmission facility, and a power transmission method that can suppress the progress of deterioration of a power storage device having a relatively high energy density among the two power storage devices. The control device (5) of the power supply system (1) executes the following processing in a state where the required output falls within a range between zero and a predetermined Ath threshold value (DT_th4, DT_th2): controls the power transmission circuit section (11) so that The sensitivity to the change of the output of the first power storage device (2) corresponding to the change of the required output of the electric load (100) becomes higher than the output or input of the second power storage device (3) corresponding to the change of the required output. In a state where the sensitivity to change is relatively low, a power supply amount corresponding to the required output is supplied to the electrical load.

Description

technical field [0001] The present invention relates to a power supply system for supplying power to electric loads such as electric motors using two power storage devices. Background technique [0002] Conventionally, as such a power supply system, for example, a system disclosed in Patent Document 1 is known. Patent Document 1 proposes a system using two power storage devices, a high-capacity power storage device with a relatively large capacity and a high-output power storage device with a relatively high upper limit of outputtable electric power. , to supply power to the electric motor of the vehicle. [0003] In this system, the SOC (State Of Charge) indicating the remaining capacity of each of the two power storage devices is adjusted by changing the transmission and reception rate of the electric power transferred between the two power storage devices according to the vehicle speed. [0004] prior art literature [0005] patent documents [0006] Patent Document 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00B60L58/18B60L50/13B60L50/16
CPCB60L53/00H02J7/0036H02J7/0063H02J7/0048B60L7/14B60L2210/10B60L2240/527B60L2240/529B60L2240/545B60L2240/547B60L2240/549B60L50/51B60L58/12B60L58/20B60L58/21B60L58/25H02M7/53875Y02T10/70Y02T10/7072Y02T10/72Y02T90/14H02M7/44H02P4/00
Inventor 小熊宏和泷泽大二郎海野良太
Owner HONDA MOTOR CO LTD