Heater control device

A control device and heater technology, which is applied to electric heating devices, circuit devices, heating element materials, etc., can solve problems such as power-on time limitation and heat limitation released by electric heaters.

Active Publication Date: 2019-03-01
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In this way, since the energization timing of each heat generating part is appropriately staggered, the energizatio

Method used

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Examples

Experimental program
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no. 1 approach

[0033] Such as figure 1 As shown, in this embodiment, the heater system 10 is a component mounted on a vehicle, and the heater system 10 includes an electric heater 12, a heater control device 14, and a heater operating unit 26 (see Figure 5 ). here, figure 1 Arrows DR1 and DR2 in the arrows indicate the direction of the vehicle on which the heater system 10 is mounted. which is, figure 1 An arrow DR1 in the arrow indicates a vehicle front-rear direction DR1, and an arrow DR2 indicates a vehicle up-down direction DR2.

[0034] The electric heater 12 is a thin-plate-shaped radiation heater, and is arranged in the vehicle interior. Such as figure 1 as well as figure 2 As shown, the electric heater 12 is powered by a power source 16 such as a battery mounted on a vehicle or a generator, and generates heat. Specifically, the electric heater 12 has a plurality of heat generating parts 121 and 122 that generate heat by energization, and radiates heat from the plurality of h...

no. 2 approach

[0088] Next, a second embodiment will be described. In this embodiment, differences from the first embodiment described above will be mainly described. In addition, description of the same or equivalent parts as those of the above-mentioned embodiment is omitted or simplified. This point also applies to the embodiments described later.

[0089] In this embodiment, if Figure 9 As shown, the heater control device 14 controls the electric heater 12 in the same manner as the first embodiment, but the specific control process executed by the heater control device 14 is different from that of the first embodiment. That is, instead of the first embodiment Figure 6 shown in the control process, while the heater control device 14 of this embodiment executes Figure 9 Control processing shown.

[0090] Specifically, like the first embodiment, the heater control device 14 of the present embodiment starts Figure 9 control processing.

[0091] Figure 9 Step S101 of the present ...

no. 3 approach

[0110] Next, a third embodiment will be described. In this embodiment, differences from the second embodiment described above will be mainly described.

[0111] In this embodiment, as figure 2 The power supply 16 is a variable voltage power supply capable of changing the power supply voltage step by step. Then, the heater control device 14 continuously changes the power supply voltage which is the output voltage of the power supply 16 . Specifically, as Figure 10 As shown, the heater control device 14 varies the power supply voltage within a range from 0 V to a predetermined constant voltage Vc. The constant voltage Vc refers to a voltage maintained at the power supply voltage after the heater temperature TPh is saturated. In addition, the constant voltage Vc is experimentally set in advance so that the current value of the electric heater 12 can be maintained at a value below the current upper limit ALu and close to the current upper limit ALu after the heater temperatu...

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PUM

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Abstract

The heater control device controls an electric heater (12). The electric heater has a plurality of heating units (121, 122) producing heat by being energized, and radiating the heat from the pluralityof heating units. Current determination units (S103, S104, S105) in the heater control device determine whether or not a predetermined current limit value (AL1) is exceeded by a total energization current value (HAt), which is the value of the current for energizing the electric heater when the entirety of the plurality of heating units is energizable. If the total energization current value hasbeen determined to exceed the current limit value, the energization control units (S102, S106) of the heater control device execute a first heater control whereby the electric heater is energized while an object to be brought to an energization-disabled OFF state is being switched among some or the entirety of the plurality of heating units. If the total energization current value has been determined to be equal to or lower than the current limit value, the energization control unit executes a second heater control whereby the electric heater is energized while the entirety of the plurality ofheating units is enabled to be energized.

Description

[0001] Cross-reference of related applications [0002] This application is based on Japanese Patent Application No. 2016-132564 for which it applied on July 4, 2016, and the description content is taken in here as a reference. technical field [0003] The invention relates to a heater control device for controlling an electric heater. Background technique [0004] As such a heater control device, for example, an energization control system for an anti-condensation heater described in Patent Document 1 is conventionally known. The energization control system described in this patent document 1 operates a plurality of heaters for the purpose of preventing condensation on a display window in a store in cooperation. [0005] Specifically, the energization control system of this Patent Document 1 appropriately shifts the timing of energization to the anti-condensation heater. Thereby, uniformization of electric quantity can be achieved. In addition, in the case of determining...

Claims

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Application Information

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IPC IPC(8): H05B3/00B60H1/22H05B3/12
CPCB60H1/22H05B3/00H05B3/12B60H1/2226B60H1/00807B60H1/2218H02H9/02H05B3/0023
Inventor 石川公威加古英章生出裕康坂东史朗新居英纪
Owner DENSO CORP
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