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Battery temperature control system, control method and control device of hybrid electric vehicle

A hybrid vehicle and temperature control technology, which is applied in battery/fuel cell control devices, electric vehicles, secondary batteries, etc., can solve the problems that the battery cannot be charged and cannot meet the battery charging temperature.

Active Publication Date: 2019-03-05
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this heating method has many disadvantages
Among them, on the one hand, for a larger battery system, the engine cooling water temperature is not enough to make the battery reach the design temperature; on the other hand, only this kind of battery heating method is available, such as the cooling water temperature Close to the battery temperature, can not meet the charging temperature of the battery, resulting in the battery can not be charged

Method used

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  • Battery temperature control system, control method and control device of hybrid electric vehicle
  • Battery temperature control system, control method and control device of hybrid electric vehicle
  • Battery temperature control system, control method and control device of hybrid electric vehicle

Examples

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no. 1 example

[0051] According to an aspect of an embodiment of the present invention, a battery temperature control system of a hybrid electric vehicle is provided, such as figure 1 As shown, the control system includes:

[0052] A temperature control pipeline 10, the temperature control pipeline 10 is separated from the battery body of the hybrid electric vehicle by a first preset distance, and the inlet of the temperature control pipeline 10 and the coolant outlet of the engine of the hybrid electric vehicle pass through the first A pipeline 1 communicates, the outlet of the temperature control pipeline 10 communicates with the coolant inlet of the engine through the second pipeline 2, the first pipeline 1 is provided with a first switch 5, and the second The pipeline 2 is provided with a second switch 6; preferably, the first switch 5 and the second switch 6 can specifically be solenoid valves;

[0053] A heating sheet, the heating sheet is separated from the battery body by a second p...

no. 2 example

[0070] An embodiment of the present invention provides a hybrid electric vehicle, including the above-mentioned battery temperature control system of the hybrid electric vehicle.

[0071] Wherein, the situation that the hybrid electric vehicle heats the battery body includes the following two types:

[0072] Case 1: Charging and heating include the following two types:

[0073] The first type: the hybrid vehicle runs in the traditional mode. When the coolant temperature of the engine reaches the second temperature threshold, the control device controls the first switch and the second switch to make the coolant flow through the temperature control tube of the battery body. In this way, the purpose of heating the battery body can be achieved, and at the same time, the cooling speed of the coolant can be accelerated. When charging immediately after parking, the battery body is still maintained at a relatively comfortable temperature environment, which greatly shortens the chargi...

no. 3 example

[0079] Embodiments of the present invention provide a control method for a battery temperature control system of a hybrid electric vehicle as described above, such as figure 2 As shown, the method includes:

[0080] Step 201 : when the charging positive pole is connected to the positive pole of the external power supply, and the charging negative pole is connected to the negative pole of the external power supply, determine whether the first temperature collected by the first temperature sensor exceeds a first temperature threshold.

[0081] Among them, since the heating piece is connected between the charging positive pole and the charging negative pole of the battery body, the heating piece is powered by the external power supply when the hybrid vehicle is charged. Therefore, the heating circuit formed by the heating sheet can only heat the battery body when the charging positive pole of the battery body is connected to the positive pole of the external power supply, and the ...

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PUM

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Abstract

The invention provides a battery temperature control system of a hybrid electric vehicle, a control method and a control device. The system comprises a temperature control pipeline, a heating piece, a first temperature sensor, a second temperature sensor and a control device, wherein an inlet of the temperature control pipeline communicates with an engine cooling liquid outlet through a first pipeline, an outlet of the temperature control pipeline communicates with an engine cooling liquid inlet through a second pipeline, a first switch is arranged on the first pipeline, a second switch is arranged on the second pipeline, the heating piece is connected in series with a fifth switch and then is connected between a charging positive electrode and a charging negative electrode, the first temperature sensor is arranged in a battery body, the second temperature sensor is arranged in an engine cooling liquid, and the control device is electrically connected with the first temperature sensor, the second temperature sensor, the first switch, the second switch and the fifth switch. Therefore, with the system provided by the scheme of the invention, heating of the battery system is not limited to one mode, and the battery system can be charged at any time.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to a battery temperature control system, control method and control device of a hybrid electric vehicle. Background technique [0002] The battery performance of hybrid electric vehicles is greatly affected by temperature. Usually, in areas where the ambient temperature is too low, the power battery cannot work normally, which greatly affects the working status of the vehicle. However, in the prior art, the battery system is heated by the high-temperature cooling water of the engine. However, there are many disadvantages in this heating method. Among them, on the one hand, for a larger battery system, the engine cooling water temperature is not enough to make the battery reach the design temperature; on the other hand, only this kind of battery heating method is available, such as the cooling water temperature Close to the battery temperature, can not meet the cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/637H01M10/6568H01M10/6571H01M10/663B60L58/27
CPCB60L58/27H01M10/615H01M10/625H01M10/637H01M10/6568H01M10/6571H01M10/663Y02E60/10Y02T10/70
Inventor 刘凤月
Owner BEIJING ELECTRIC VEHICLE