JPH0241629A - Power supply device for electrical equipment for car - Google Patents

Abstract

PURPOSE:To increase the voltage of power generation without waste by a low-voltage electrical equipment by supplying an electrical equipment at a voltage with a power supply from a high-voltage generating power supply and the electrical equipment at a low voltage with it from a low-voltage power supply. CONSTITUTION:+24V voltage generated by an alternator 11 is accumulated respectively in batteries 12a, 12b at 12V, and a high-voltage electrical equipment 13a is operated by a power supply at 24V by the batteries 12a, 12b connected in series. On the other hand, low--voltage electrical equipments 13b, 13c are worked by each 12V of the batteries 12a, 12b divided into two. A - terminal is connected after a + terminal is connected in the terminal constitution of the battery by increasing the generated voltage of the alternator 11. That is, a connecting section to the - terminal with which an insulator 34, a conductor 33b and a harness 33a are unified is manufactured, and the + terminal is covered with the insulator 34 by the connection of the - terminal, thus requiring the connection of the - terminal section after the + terminal is connected first.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power supply device for a vehicle electrical component, and particularly to a power supply device for a vehicle that has an electrical component that requires a high voltage power source and an electrical component that uses a low voltage power source. It is something.

[Prior Art] A power source for electrical components for a vehicle uses electric power generated by rotating a generator such as an alternator, which is stored in a storage battery or the like. However, since modern vehicles are equipped with various electrical components for control or equipment, increasing power generation capacity and reducing power waste have become important issues. For example, Japanese Patent Application Laid-Open No. 6081428 discloses an increase in power generation capacity by increasing the rotational speed of a generator, and Japanese Patent Application Laid-Open No. 6025212
No. 4 discloses controlling the rotation speed of an alternator using a variable speed pulley based on a field current from the alternator.

On the other hand, in on-vehicle power supplies, there is a desire for higher voltage power generation in order to reduce losses and increase alternator efficiency.

[Problem to be solved by the invention] However, despite the above-mentioned advantages of increasing the voltage, there are disadvantages such as increased power consumption in the regulator section of the electronic circuit, and it is generally not possible to increase the voltage. there were.

The present invention provides a power supply device for vehicle electrical components that eliminates the above-mentioned conventional drawbacks and achieves high-voltage power generation without wasting power with low-voltage electrical components.

[Means for Solving the Problem] As a means for solving the problem, the power supply device of the present invention includes at least one low voltage power supply that supplies power to low voltage vehicle electrical components and a high voltage vehicle electrical component. It is equipped with a high voltage generation power source that supplies power to electrical equipment.

[Operation] In this configuration, power is supplied to the high voltage vehicle electrical components from the high voltage generating power source, and power is supplied to the low voltage vehicle electrical components from the low voltage power source.

[Example] The present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a diagram showing the connection between the power supply device and electrical components of this embodiment.

In the figure, 11 is an alternator for power generation, and in this example +24
Generates V AC power generation. 1.2a and 12b are 12 for power storage
It is a V battery. 13a is a high voltage electrical component such as a lamp, a heater, a starter, etc. 13a and 13b are low-voltage electrical components such as an engine control unit (ECU), an injector, and an ignition coil. Here, electrical equipment 1
3a13b are distributed so that their power consumption is not biased. Further, 14 is a low voltage electrical component 13a, 13
The protection circuit b protects electrical equipment when it is accidentally connected to a high voltage.

The +24V voltage generated by the alternator 11 is
The series-connected batteries 12a and 12b each store 12V of electricity, and the high-voltage electrical component 13a operates with a +24V power source from the series-connected two batteries 12a and 12b. On the other hand, the low-voltage electrical components 13a and 13b operate with (7)+12V from the two divided batteries 12a and 12b, respectively. In this embodiment, both the batteries 12a and 12b are set to 1.2 V, but this is to eliminate bias when charging the batteries 12a and 12b.

FIG. 2 is a diagram showing connections between a power supply device and electrical components in another embodiment.

In the diagram, 21 is the +24V alternator, 22 is +1
The 2V battery 23a is a high-voltage electrical component that operates on +24V AC, such as various lamps and heaters. 2
3b is a low-voltage electrical component that operates with +12 V DC from the battery 22, such as an ECU, an injector, and an ignition coil. 24 is a switch, and when the alternator 21 generates power, terminals a-c and terminals de are connected, and the power generated by the alternator 21 is changed to +24 by the transformer 25.
The voltage is converted from V to +12V, rectified by a rectifier 26, and charged to the battery 22 with +12V DC. On the other hand, when the alternator 21 is stopped, terminals a-b and terminals d-f of the switch 24 are connected, and the DC 12V from the battery 22 is connected.
is also supplied to the high voltage electrical component 23a. In this way, the battery 22 is efficiently charged, and the high-voltage electrical components can be operated even when the alternator 21 is stopped.

In this example, various lamps, heaters, etc. are connected to the alternator 21.
Since the lamp is operated with AC +24V generated by the lamp, in order to eliminate flickering of the lamp, the number of poles of the alternator 21 is increased to raise the frequency, and the heat capacity of the lamp winding is increased.

FIG. 3A and FIG. 3B are diagrams showing the terminal configuration of the battery of this embodiment. Note that FIG. 3A is a top view, and FIG. 3B is a front view.

In the power supply device of this embodiment, it is possible to increase the voltage generated by the alternator, so in the conventional terminal configuration, when connecting electrical components to the battery, it is necessary to connect the secondary terminal after connecting one terminal. The effect of electric shock on the human body due to contact with Therefore, the above-mentioned fear has been eliminated by configuring the terminal structure of the battery so that one terminal can be connected only after the child terminals have been connected.

In the figure, 31 is a battery, 32 is a pin terminal, and 33 is a terminal. Here, the insulator 34, the conductor 33b and the harness 33
By making a connection part to one terminal integrated with a, the insulator 34 covers the child terminal by terminal connection, so it is necessary to connect the one terminal after connecting the child terminal. With the above configuration, even if high voltage power generation is performed using an alternator or the like, the battery terminals are connected only in a determined order. Note that one terminal has an insulator 34 and a conductor 3.
3b, the harness 33a may be connected later.

[Effects of the Invention] As described above, according to the present invention, it is possible to provide a power supply device for vehicle electrical components that achieves high voltage power generation without wasting power by low voltage electrical components.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the connection between the power supply device and electrical components of this embodiment, Figure 2 is a diagram showing the connection between the power supply device and electrical components of another embodiment, and Figures 3A and 3B are the main It is a figure showing the terminal structure of the battery of an example. In the figure, 11.21...alternator, 12a. 12b, 22-...Battery 13a 23a-High voltage electrical equipment, 13b, 13c, 23b...Low voltage electrical equipment, 14...Protection product, 24...Switch, 25.
...Transformer, 26... Rectifier.

Claims (1)

[Claims] The present invention is characterized by comprising at least one low-voltage power supply that supplies power to low-voltage vehicle electrical components, and a high-voltage generating power supply that supplies power to high-voltage vehicle electrical components. Power supply equipment for vehicle electrical components.