New energy bus low-configuration battery heat dissipation system
By designing a low-cost battery cooling system that includes coolant pipes, a water pump, a radiator, and a fan, the problems of high cost and complex control of existing thermal management systems are solved. This system achieves uniform heat dissipation of the battery under different operating conditions, thereby improving the stability and lifespan of the battery system.
Patent Information
- Application Number
- CN202423160783.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing thermal management systems for new energy electric vehicles are costly to design and have complex control logic. Some models use low-cost natural cooling methods, which are subject to environmental limitations.
Design a low-spec battery cooling system that includes coolant pipes, a water pump, a radiator, an expansion tank, and a cooling fan. The system uses a fan relay and a water pump relay control circuit, is powered by a 24V power supply, and incorporates a rocker switch to achieve simple heat dissipation control.
It implements low-cost and simple heat dissipation control logic to ensure uniform heat dissipation of the battery during high-power charging and discharging under different operating conditions, thereby improving the stability and lifespan of the battery system.
Smart Images
Figure CN223898354U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle thermal cycle device technical field, concretely relates to a new energy bus low version battery heat dissipation system. BACKGROUND
[0002] The battery thermal management system on the new energy electric car is divided into integrated type and independent type in use. The integrated type is parallelly connected with the plate heat exchanger on the passenger air conditioning system, the refrigerant from the condenser is divided into two paths, one path enters the evaporator through the main expansion valve to cool the air in the vehicle, the other path enters the plate heat exchanger to cool the battery coolant, and finally, the two paths are combined to return to the compressor to form the refrigerant circulation. The independent type is a separate battery refrigeration unit, including the refrigeration system (compressor, condenser, plate heat exchanger) and the circulating system components (expansion tank, water pump, exhaust pipe, etc.) of the coolant, and the PTC heating function can be added according to the need. The above two thermal management systems have high design cost and complex control logic. Some vehicle models still choose the low-cost natural cooling mode, and the battery is also limited in high and low temperature environments. Therefore, it is necessary to design a low-cost battery heat dissipation system. SUMMARY
[0003] The utility model solves the technical problems that: provide a new energy bus low version battery heat dissipation system to solve the problems of high design cost and complex control logic of the current thermal management system.
[0004] To solve the above problems, the utility model provides the following technical scheme:
[0005] A new energy bus low version battery heat dissipation system, which comprises a coolant pipe. The coolant flows through the battery pack and the radiator on the new energy vehicle in turn under the action of the water pump and then returns to the water pump. An expansion tank is arranged at the radiator. A cooling fan is arranged at the position of the radiator on the vehicle body. The cooling fan can blow air to the radiator and blow hot air to the outside of the vehicle body.
[0006] Preferably, the rated current of the cooling fan and the water pump is 30A and 20A respectively. The cooling fan and the water pump are controlled by a fan relay and a water pump relay respectively.
[0007] Further, the fan relay and the water pump relay are powered by a 24V power supply built in the vehicle body.
[0008] Further, a rocker switch is arranged on the line where the power supply is connected to the fan relay and the water pump relay.
[0009] Preferably, the size of the heat dissipation fan is consistent with the size of the radiator; a plurality of grating plates are arranged at positions on the vehicle body opposite to the radiator, and the radiator is clamped between the heat dissipation fan and the grating plate.
[0010] The beneficial effects of the utility model are embodied in the following places:
[0011] 1. The structure and control logic are relatively simple, the installation requirement is convenient, and the cost is low.
[0012] 2. The heat dissipation demand of the battery under different working conditions can be met, the heat dissipation of the whole battery can be effectively ensured to be more uniform, the temperature difference at the electric core is smaller, the stability of the battery system is enhanced, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is a structural schematic diagram of the utility model in the embodiment;
[0014] Figure 2 ;
[0015] Mark explanation: 1, cooling liquid pipe, 2, water pump, 3, battery pack, 4, radiator, 5, expansion tank, 6, heat dissipation fan, 7, fan relay, 8, water pump relay, 9, power supply, 10, rocker switch. DETAILED DESCRIPTION
[0016] The utility model will be further introduced in combination with the drawings and specific embodiments:
[0017] Embodiment:
[0018] Reference Figure 1 , the embodiment provides a kind of new energy bus low version battery heat dissipation system;It includes cooling liquid pipe 1;Cooling liquid is in cooling liquid pipe 1 under the action of water pump 2 in turn flows through battery pack 3 and radiator 4 on new energy vehicle again into water pump 2;Expansion tank 5 is also provided at radiator 3;Heat dissipation fan 6 is provided at the position of the vehicle body opposite to radiator 3.;Heat dissipation fan 6 can blow to radiator 3, and hot air is blown to the outside of vehicle body.
[0019] The rated current size of heat dissipation fan 6 and water pump 2 is 30A and 20A respectively;And heat dissipation fan 6 and water pump 2 are respectively fan relay 7 and water pump relay 8 control the on-off of its circuit.
[0020] Fan relay 7 and water pump relay 8 are powered by the same 24V power supply 9 built in the vehicle body.
[0021] Rocker switch 10 is arranged on the route that power supply 9 is connected to fan relay 7 and water pump relay 8 respectively.
[0022] The size of the cooling fan 6 is the same as that of the radiator 4; several grid plates are also provided on the vehicle body at the position opposite to the radiator 4, and the radiator 4 is sandwiched between the cooling fan 6 and the grid plates.
[0023] The utility model device in this embodiment has two working modes.
[0024] In natural circulation mode: the water pump is turned on, allowing the coolant to circulate automatically, thus preventing temperature differences in the battery.
[0025] Cooling circulation mode: When the temperature of a single battery cell reaches above 40°C, manually turn on the fan switch. The water pump circulates the coolant internally, carrying away the corresponding heat from the battery pack through the radiator fan for cooling. This prevents the battery from overheating, similar to the cooling method used in traditional vehicle engines.
Claims
1. A low-end battery cooling system for new energy buses, characterized in that: It includes a coolant pipe (1); the coolant flows through the battery pack (3) and radiator (4) of the new energy vehicle in the coolant pipe (1) under the action of the water pump (2) and then returns to the water pump (2); an expansion tank (5) is also provided at the radiator (4); a cooling fan (6) is provided on the vehicle body directly opposite the radiator (4); the cooling fan (6) can blow air onto the radiator (4) and blow hot air to the outside of the vehicle body; the rated current of the cooling fan (6) and the water pump (2) are 30A and 20A respectively; and the cooling fan (6) and the water pump (2) are controlled by the fan relay (7) and the water pump relay (8) respectively to control the on and off of their circuits.
2. The low-end battery cooling system for new energy buses according to claim 1, characterized in that: The fan relay (7) and the water pump relay (8) are powered by the same 24V power supply (9) built into the vehicle body.
3. The low-end battery cooling system for new energy buses according to claim 2, characterized in that: A rocker switch (10) is installed on each of the power supply (9) routes connected to the fan relay (7) and the water pump relay (8).
4. The low-end battery cooling system for new energy buses according to claim 1, characterized in that: The size of the cooling fan (6) is the same as that of the radiator (4); several grid plates are also provided on the vehicle body at the position opposite to the radiator (4), and the radiator (4) is sandwiched between the cooling fan (6) and the grid plates.