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Vehicle power supply apparatus

A technology for power supply equipment and vehicles, applied in vehicle energy storage, vehicle components, electric vehicles, etc.

Active Publication Date: 2012-10-17
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

with as reference Figure 4 Similar to the vehicle power supply device 100 described, this vehicle power supply device also causes similar problems, so that when the power supply to a faulty accessory is interrupted, the power supply to other accessories and the prime mover is also simultaneously interrupted by the circuit breaker.

Method used

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no. 1 approach

[0033] A vehicle power supply apparatus 1 according to a first embodiment of the present invention will now be described.

[0034] (structure)

[0035] The vehicle power supply apparatus 1 supplies electric power to a prime mover 2 and a plurality of accessories 3A to 3E from a high-voltage auxiliary battery 5 outputting a voltage higher than that of a lead battery. A vehicle power supply device 1 , a prime mover 2 , the plurality of accessories 3A to 3E, and an auxiliary battery 5 are installed in the vehicle.

[0036] The prime mover 2 may include a vehicle drive motor, a generator motor, a drive assist motor that assists in driving the engine, and the like. For the purpose of illustration, in this embodiment, it is assumed that the prime mover 2 is a vehicle drive motor. This vehicle drive motor 2, which is one of the on-vehicle electric loads, is an indispensable component for driving the vehicle.

[0037] Each component is an on-board electrical load other than the on-...

no. 2 approach

[0063] will now refer to figure 2 A vehicle power supply apparatus according to a second embodiment will be described. Only the differences of the second embodiment from the first embodiment will be described.

[0064] (structure)

[0065] In the present embodiment, the plurality of power converters 120 to 12R are divided into one or more different power converter groups depending on whether each accessory participates in maintaining the driving function of the vehicle. For example, the plurality of power converters 120 to 12R are divided into two power converter groups: a power converter group (first group 31 ) participating in maintaining the driving function of the vehicle and a group of power converters not participating in maintaining the driving function of the vehicle. Streamer group (second group 32).

[0066] The accessories 3O, 3P in the first group 31 involved in maintaining the driving function of the vehicle may include a water pump for circulating cooling wat...

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PUM

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Abstract

A vehicle power supply apparatus for supplying electrical power from a secondary battery to a prime mover and a plurality of accessories. The apparatus includes a plurality of power converters each electrically connected between a corresponding accessory and the secondary battery and operative to convert electrical power between the secondary battery and the corresponding accessory. The power converters are divided into at least one power-converter group each including at least one power converter electrically connected to a common power supply line connected to the secondary battery. The apparatus further includes at least one power-supply breaker corresponding one-to-one to the at least one group adapted to interrupt power supply from the secondary battery to the corresponding group in response to a command.

Description

technical field [0001] The present invention relates to a vehicle power supply apparatus for supplying electric power to a prime mover and a plurality of accessories installed in a vehicle. Background technique [0002] There are some well known vehicle power supplies for supplying electrical power from an auxiliary battery to a prime mover and a number of accessories via their respective power converters. A prime mover may include a vehicle drive motor, a generator motor, or a drive assist motor that assists in driving the vehicle engine. [0003] As an example, a vehicle power supply apparatus as disclosed in Japanese Patent Application Laid-Open Document No. 2006-300038 is adapted to supply electric power from an auxiliary battery to an integrated inverter unit incorporating a A power converter for driving an electric compressor motor, and a power converter for driving a motor of other accessories such as a water pump, an oil pump, a fan, etc., and at least one of vehicl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18B60L3/00
CPCY02T10/7066Y02T10/7011Y02T10/7241B60L1/003B60L2210/40Y02T10/7005B60L11/1868B60L1/02B60L2240/36B60L11/14B60L1/14Y02T10/7077B60L3/04Y02T10/70B60L50/16B60L58/20Y02T10/72Y02T10/7072
Inventor 竹内良友蛭间淳之多湖方一
Owner DENSO CORP