Power supply control circuit and vehicle-mounted air conditioner

A technology of power supply control circuit and power supply voltage, which is applied in battery circuit devices, control/regulation systems, electric vehicles, etc., and can solve unfavorable production and use, high requirements for anti-pressure of inverter circuits, compressor cost and large volume of compressors, etc. problems, to avoid additional costs, save the effect of voltage suppression circuit

Active Publication Date: 2019-12-20
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the on-board battery-powered air conditioners in gasoline vehicles are directly driven by batteries, and the compressors in the air conditioners are also driven by battery voltage. However, using battery voltage to directly drive the compressor requires a very large current, making the compressor It is necessary to use very thick copper wires for winding, resulting in a large compressor cost and volume, which is not conducive to production use, and there is a load dump voltage in the car, the maximum value of which is 5% of the battery voltage ~10 times, if the power supply circuit is connected with an inverter circuit, the requirements for the voltage resistance of the inverter circuit are relatively high, and a voltage suppression circuit must be used for protection

Method used

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Embodiment 1

[0040] Such as figure 1 As shown, according to the embodiment of the first aspect of the present invention, a power supply control circuit 100 is proposed, which includes: a booster circuit 102 for performing voltage conversion on the power supply voltage to be input to the load.

[0041] Specifically, the boost circuit 102 includes a voltage doubling component 1022 configured to store or release the supply voltage provided by the input terminal of the boost circuit 102, wherein the voltage doubling component 1022 is provided with at least two groups, at least two groups of voltage doubling Components 1022 are interconnected.

[0042] The power supply control circuit 100 provided in this embodiment considers that the battery of the car is charged by the generator of the car. When the battery is suddenly disconnected from the generator during the operation of the generator, the generator as an inductive device will In the case of a drop, voltage compensation will be caused to ...

Embodiment 2

[0044] Such as figure 1 As shown, according to an embodiment of the present invention, in addition to the features defined in the above embodiments, further: the boost circuit 102 further includes a switching device 1024 and an energy storage component 1026 .

[0045] Specifically, the switching device 1024 is connected to the voltage doubler component 1022 and is configured to control the voltage doubler component 1022 to be turned on or off, one end of the energy storage component 1026 is connected to the voltage doubler component 1022, and the other end of the energy storage component 1026 is connected to the boost circuit The output terminal of 102 is connected, and the energy storage component 1026 is configured to boost the power supply voltage released by the voltage multiplier component 1022 and transmit it to the output terminal of the boost circuit 102 .

[0046] In this embodiment, the switching device 1024 is connected to the voltage doubling component 1022, and is...

Embodiment 3

[0048] Such as figure 1 and figure 2 As shown, according to an embodiment of the present invention, a power supply control circuit 100 is proposed, which includes: a boost circuit 102 , a power supply 104 , an inverter circuit 106 and a controller 108 .

[0049] Specifically, the power supply 104, the inverter circuit 106, and the controller 108 are connected to the boost circuit 102, the power supply 104 is configured to provide a supply voltage, and the inverter circuit 106 is configured to control the power supply signal to supply power to the load according to the converted voltage, and the control The converter 108 is configured to output a control instruction, and control the booster circuit 102 to work according to a preset switching frequency and duty cycle.

[0050] In this embodiment, the power supply 104 is used to provide electric energy for the load. Specifically, the power supply voltage of the power supply 104 is boosted by the booster circuit 102 to obtain a ...

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PUM

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Abstract

The invention provides a power supply control circuit and a vehicle-mounted air conditioner. The power supply control circuit comprises a boost circuit configured to perform voltage conversion of a power supply voltage to be input to a load, wherein the boost circuit specifically comprises at least two groups of voltage doubling assemblies, the voltage doubling assemblies are configured to store or release the power supply voltage provided by an input end of the boost circuit, and the at least two groups of voltage doubling assemblies are connected with each other. The power supply control circuit is advantaged in that on one hand, the load rejection energy absorption capability is achieved, a voltage suppression circuit is omitted, extra cost caused by device increase is avoided, on the other hand, the absorption capability can be fully utilized, an input voltage can be efficiently increased, the electric energy is provided for subsequent loads, and a problem caused by the fact that the load is driven by a low voltage is solved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a power supply control circuit and a vehicle air conditioner. Background technique [0002] At present, the on-board battery-powered air conditioners in gasoline vehicles are directly driven by batteries, and the compressors in the air conditioners are also driven by battery voltage. However, using battery voltage to directly drive the compressor requires a very large current, making the compressor It is necessary to use very thick copper wires for winding, resulting in a large compressor cost and volume, which is not conducive to production use, and there is a load dump voltage in the car, the maximum value of which is 5% of the battery voltage ~10 times, if the power supply circuit is connected with an inverter circuit, the requirements for the voltage resistance of the inverter circuit are higher, and a voltage suppression circuit must be used for protection. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/155H02J7/00B60R16/033B60H1/00
CPCH02M3/155B60R16/033B60H1/00642H02M3/1552
Inventor 霍兆镜
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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