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A thermal management system and a new energy vehicle having the same
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A technology of thermal management system and air conditioning system, applied in electrical components, electrochemical generators, secondary batteries, etc., can solve the problems of insufficient active heat dissipation capacity and high temperature of power battery boxes
Active Publication Date: 2020-10-30
GREE ELECTRIC APPLIANCES INC +1
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Problems solved by technology
[0005] In view of this, the present invention provides a thermal management system and a new energy vehicle equipped with it, which thermally couples the battery compartment and the air conditioning system to solve the current problems of insufficient active cooling capacity and high temperature of the power battery box, while ensuring power The operation safety of the battery, at the same time, the concept of energy ladder utilization is introduced in the system design process, so that the thermal management system has higher energy efficiency
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Embodiment 1
[0034] In order to better illustrate the profile of the present invention, this embodiment provides a new energy vehicle, which has a thermal management system described in the present invention. specific:
[0035] Such as figure 1 As shown, the thermal management system of this embodiment thermally couples the battery compartment 2 and the air-conditioning system 1 together, the battery compartment 2 is provided with one or more battery boxes 22, and the battery box 22 is provided with one or more battery units 221 , The cavity of the battery compartment 2 is provided with a first heat exchanger 23, and multi-stage cooling is formed among the air conditioning system 1, the battery compartment 2 and the heat exchanger.
[0036] Such as figure 1 As shown, the cooling medium first obtains cold energy from the evaporator of the air conditioning system 1, and then is sent to each battery box 22 in the battery compartment 2, and the cooling medium in the battery box 22 uses the c...
Embodiment 2
[0046] In this embodiment, the cooling medium is air. Such as figure 2 , compared with the embodiment 1 using carbon dioxide as the refrigerant, the air conditioning system 1, the battery compartment 2, and the heat exchanger of the embodiment 2 using air as the cooling medium form open cooling. After the air flows out of the battery compartment 2, it is directly discharged into the atmosphere.
[0047] Others are the same as embodiment 1.
[0048] The thermal management system provided in this embodiment uses air as the cooling medium. For vehicle scenarios, the temperature adjustment of the passenger compartment is generally an essential function, so the thermal management system described in this embodiment can be connected to the air conditioning system of the passenger compartment. , but the direct communication between the two spaces should be avoided, so as not to cause the polluting gas to diffuse into the passenger compartment.
[0049] To sum up, the present inve...
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Abstract
The invention discloses a thermal management system and a new energy automobile with the same, and relates to the technical field of automobiles. According to the thermal management system, a batterycompartment and an air conditioning system are thermally coupled together, a heat exchanger is arranged in the battery compartment, and multi-stage cooling is formed among the air conditioning system,the battery compartment and the heat exchanger; and a cooling medium obtains the cooling capacity from the air conditioning system and sends the cooling capacity into each battery box in the batterycabin, and the cooling medium in the battery box cools the battery units of the battery box by utilizing the cooling capacity obtained from the air conditioning system, exchanges heat with the heat exchanger in the battery cabin and finally leaves the battery cabin. According to the battery and the new energy automobile related to the thermal management system, heat exchange in the power battery box is enhanced by utilizing an energy step principle, the temperature constancy in the battery box and the battery cabin is maintained to the greatest extent, the cycle life of the power battery is prolonged, the energy efficiency of the thermal management system is improved, and the energy efficiency of the whole automobile is further improved.
Description
technical field [0001] The invention relates to a thermal management system, in particular to a thermal management system of a transportation device using a power battery and having an air conditioning system, such as a thermal management system of a new energy vehicle. Background technique [0002] In the current environment of pursuing higher energy density, high work efficiency and high safety, the thermal management of power batteries is even more important. According to data, the cycle life of a certain type of lithium battery at room temperature is as high as 30,000 times. When the temperature rises by 20°C, its cycle life drops sharply by about half. [0003] The basic method of battery thermal management is to take out the heat generated inside the battery. According to whether the thermal management system consumes energy, it can be divided into active cooling system and passive cooling system. Active heat dissipation generally uses fans and other equipment to draw...
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