A battery thermal management system for a hybrid electric vehicle
A thermal management technology for hybrid electric vehicles and batteries, which is applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of low cooling and heating efficiency, affect the life of lithium batteries, and cannot effectively control the battery temperature, so as to increase the temperature , to avoid the effect of life and work efficiency reduction
Inactive Publication Date: 2018-11-27
SOUEAST
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Problems solved by technology
[0003] There are several types of lithium battery temperature control in existing hybrid vehicles: 1. No temperature control system; disadvantages: the battery temperature cannot be effectively controlled, the vehicle is limited in low-temperature areas, and the battery is prone to overheating during long-term discharge, which affects lithium battery temperature. Battery Life
2. Simple water cooling and thermistor PTC heating; Disadvantages: The vehicle's air conditioning system and engine cooling water heating function are not fully utilized, and the cooling and heating efficiency is too low
Method used
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[0017] see figure 1 As shown, a battery thermal management system of a hybrid electric vehicle according to the present invention, the battery thermal management system includes: a battery pack temperature control circulation system 100, a cooling circulation system 200, a heating circulation system 300, and a heat exchanger 400; Both the cooling circulation system 200 and the heating circulation system 300 are connected to the heat exchanger 400;
[0018] The battery pack temperature control cycle system 100 includes: a battery pack 101, a temperature control medium pipeline 102, an on-board charging and DC step-down integrated machine DCDC-OBC103, a water pump 104, an auxiliary water tank 105, and a tee pipe 106; the cooling Circulation system 200 includes: compressor 201, cooling circulation pipeline 202, condenser 203, three-way pipe two 204, first expansion valve 205, air conditioning system HVAC206, three-way pipe three 207, first solenoid valve 208, second Expansion va...
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The invention provides a battery heat management system of a hybrid electric vehicle. The battery heat management system comprises a battery pack temperature control circulation system, a cooling circulation system, a heating circulation system and a heat exchanger, wherein the battery pack temperature control circulation system comprises a battery pack, a temperature control medium pipeline, an on-board charging and DC step-down all-in-one machine DCDC-OBC, a water pump, a secondary water tank and a three-way pipe I; the cooling circulation system and the heating circulation system are connected with the heat exchanger; the battery pack is connected with the heat exchanger through the temperature control medium pipeline; and the water pump passes through the on-board charging and DC step-down all-in-one machine DCDC-OBC and is connected with the heat exchanger. Engine cooling water of the vehicle and an air-conditioning system are utilized, so that the temperature control efficiency of the lithium battery pack is improved; the temperature of the lithium battery pack is effectively controlled within a certain range; and the charge-discharge efficiency of the lithium battery pack is improved; and the lifetime of the lithium battery pack is prolonged.
Description
technical field [0001] The invention relates to the field of battery thermal management of a hybrid electric vehicle, in particular to a battery thermal management system of a hybrid electric vehicle. Background technique [0002] The lithium battery used in hybrid vehicles needs to be within a certain temperature range to make the lithium battery run in the best condition and prolong its service life. Therefore, in order to ensure that the vehicle can be used normally in high temperature or cold areas, it is necessary to have a set of high-efficiency The battery thermal management system is used to ensure that the working temperature of the battery is kept within a certain range; the engine on a traditional car generally has a set of cooling water circulation system to ensure that the working temperature of the engine is within a certain range; the traditional car generally has an air conditioning system , used to keep the temperature in the compartment within a certain ran...
Claims
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IPC IPC(8): H01M10/615H01M10/613H01M10/625H01M10/6556
CPCH01M10/613H01M10/615H01M10/625H01M10/6556Y02E60/10
Inventor 张晓佳许苘王钊王孝全
Owner SOUEAST