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Control device of vehicle cooling device

A cooling device and control device technology, which is applied in the direction of battery/fuel cell control devices, power devices, vehicle components, etc., can solve the problems of cooling performance reduction, charging capacity limitation, charging time extension, etc., and achieve the effect of improving cooling performance

Inactive Publication Date: 2020-09-22
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the cooling device for a vehicle as in Patent Document 1, since the drive unit and the battery are cooled separately by the refrigerant flowing in the cooling circuit, there is a problem that when the battery is in the When trying to give priority to cooling the battery in the state of charge, the cooling performance for cooling the battery decreases due to the heat transferred from the drive unit to the refrigerant
Therefore, in the above-mentioned storage battery, for example, charging failure such as limitation of charging amount and prolongation of charging time may occur.

Method used

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  • Control device of vehicle cooling device
  • Control device of vehicle cooling device
  • Control device of vehicle cooling device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] figure 1 It is a figure explaining the schematic structure of the electric vehicle 10 to which this invention is applied. in addition, figure 2 is the description set in figure 1 A schematic configuration diagram of a power transmission unit (drive unit) PTU of the electric vehicle 10 in FIG. It should be noted that the power transmission unit PTU is a drive unit that drives a pair of left and right drive wheels (not shown).

[0057] Such as figure 2 As shown, the power transmission unit PTU includes an electric motor 12 , a power transmission mechanism 14 and a housing case 16 . It should be noted that the electric motor 12 is a driving force source for traveling. In addition, the power transmission mechanism 14 transmits the driving force generated by the electric motor 12 to the above-mentioned pair of left and right drive wheels. In addition, the storage case 16 houses the electric motor 12 , the power transmission mechanism 14 , and the like. In addition, ...

Embodiment 2

[0088] Figure 5 It is a figure explaining the electronic control unit (controller) of the cooling device 28 of another Example (Example 2) of this invention. The electronic control device of this embodiment is different from Embodiment 1 in that it is different from Embodiment 1 in that it is determined that one of the determination conditions that it is necessary to forcibly stop the PTU cooling device 34 is deleted in the forced stop determination unit 112a. The control device 100 is substantially the same. That is, even if it is determined by the battery charging determination unit 114 that the battery 26 is in a non-charging state, and the battery temperature Tbat [°C] of the battery 26 when it is determined that the battery 26 is in a non-charging state by the battery charging determination unit 114 is the third When the predetermined temperature Tbat3 [° C.] or higher is exceeded, the forced stop determination unit 112 a also determines that it is not necessary to forc...

Embodiment 3

[0093] Figure 6 It is a figure explaining the electronic control unit (controller) of the cooling device 28 of another Example (Example 3) of this invention. The electronic control device of the present embodiment differs in that the forced drive determination unit 112b is deleted, and is substantially the same as the electronic control device of the second embodiment in other respects.

[0094] Figure 6 This is a flowchart illustrating an example of a control operation of switching control for switching the drive state of the PTU cooling device 34 during parking, for example, in the electronic control device of the present embodiment. It should be noted, Figure 6 The S1 and S2 shown are with Figure 5 The contents of S1 and S2 shown are the same. Therefore, below, omit Figure 6 Description of S1 and S2 in.

[0095] In S23 corresponding to the function of the forced stop determination unit 112a, it is determined whether or not the remaining charge level SOC [%] of th...

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Abstract

A control device of a vehicle cooling device is provided, which can properly improve cooling performance on a storage battery when the storage battery is in a charging state. When the storage battery(26) is in a charging state, a flow of cooling water (W) flowing in a PTU cooling circuit (40) is stopped. Accordingly, when the storage battery (26) is in a charging state, the cooling water (W) withheat transferred from a power transmission unit (PTU) does not flow back to a heat exchanger (38) through the PTU cooling circuit (40), so that the cooling performance on the storage battery (26) canbe properly improved when the storage battery is in a charging state.

Description

technical field [0001] The present invention relates to a cooling device for a vehicle that cools a drive unit and a storage battery separately, and relates to a technique for appropriately improving the cooling performance of the storage battery when the storage battery is in a charged state. Background technique [0002] There is known a cooling device for a vehicle that cools a drive unit and a battery separately. For example, the vehicle cooling device disclosed in Patent Document 1 is like this. In addition, the vehicle cooling device disclosed in Patent Document 1 includes: a cooling circuit for cooling the drive unit including, for example, a drive motor and a drive circuit, and a battery by flowing refrigerant; a heat exchanger for cooling the refrigerant; and an electric pump for sending the refrigerant cooled by the heat exchanger to the cooling circuit. In addition, Patent Document 1 describes that when the storage battery is in a charged state, the coolant sent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K1/00B60L58/26H01M10/613H01M10/625H01M10/6567
CPCB60K1/00B60L58/26H01M10/613H01M10/625H01M10/6567B60K2001/005B60K2001/006B60K2001/003H01M2220/20H01M10/635H01M10/6568B60K13/04B60K2001/001B60H1/00735B60R16/04H01M10/63B60H1/00278B60H1/00657B60H1/00885
Inventor 渡边正人
Owner TOYOTA JIDOSHA KK
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