Vehicle-mounted air conditioner integrated with semiconductor refrigeration system
By integrating semiconductor refrigeration systems into vehicle air conditioners and using semiconductor refrigeration sheets and snake-type heat exchange coils, the existing vehicle air conditioners have many components, high noise and inaccurate temperature control have been solved, and efficient battery cooling and heating have been achieved, improving passenger comfort and air conditioning usage.
Patent Information
- Application Number
- CN202420889610.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-04-26
AI Technical Summary
When the existing vehicle air conditioners integrate the battery liquid cooling system and heating system, they add parts, which consume a lot of space, have large noise and vibration, have low temperature control accuracy, complex control logic, and have low energy efficiency conversion of heating the battery, affecting passenger comfort.
Car air conditioners with integrated semiconductor refrigeration systems are adopted to replace plate heat exchangers and PTC water heaters with semiconductor refrigeration sheets to simplify the structure, reduce parts, and use snake-type heat exchange coils and insulated ceramic sheets to improve the cooling and heating efficiency.
It has achieved the reduction of air-conditioning components and space occupation, reduced noise and vibration, improved temperature control accuracy and control simplicity, improved battery cooling and heating efficiency, ensured sufficient cooling capacity in the passenger area, and improved passenger comfort and air conditioning usage rate.
Smart Images
Figure CN222756389U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air conditioning, in particular to a vehicle-mounted air conditioning with an integrated semiconductor refrigeration system. Background Art
[0002] In order to extend the battery life and service life of pure electric buses, the vehicle will integrate a battery liquid cooling system in the air conditioner to cool the battery, and also be equipped with a heating system to heat the battery, so that the battery can operate in a constant and suitable temperature environment, greatly improving its endurance and extending its service life. Figure 1 As shown, the existing air conditioner with integrated battery liquid cooling system will add plate heat exchanger 1, electronic expansion valve 2, first liquid supply valve 3 and pipelines compared with ordinary air conditioners. The number of air conditioner parts increases and the space occupies a large area. When the battery is charged at night, the battery liquid cooling system is started and the operation of the condensing fan will produce a large noise, affecting the surrounding living environment. The noise is loud, the vibration is large, the temperature control accuracy is low, the control logic is complex, and battery thermal management failures are prone to occur. During the operation of the bus, when cooling the battery, part of the overall cooling capacity of the air conditioner will be taken away, which will reduce the cooling capacity supply in the passenger area and reduce the comfort of the passengers. A simple PTC water heater is used to heat the battery, which has low energy efficiency conversion, causes waste of resources, and the overall assembly of the air conditioner is complex.
[0003] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention
[0004] The purpose of the utility model is to address the deficiencies of the prior art and thus provide a vehicle-mounted air conditioner with an integrated semiconductor refrigeration system. The utility model has a scientific design, greatly reduces the number of components of existing passenger car air conditioners, has a simple structure, is easy to assemble, occupies a small space, is environmentally friendly and energy-saving, effectively cools and heats the battery, has low noise and vibration, and does not occupy the overall cooling capacity of the air conditioner when cooling the battery, thereby improving passenger comfort and the actual usage rate of the air conditioner.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a vehicle air conditioner with an integrated semiconductor refrigeration system, including an air conditioner body, a semiconductor refrigeration plate and a battery coolant pipeline, the semiconductor refrigeration plate is electrically connected to the DC power supply of the air conditioner body through a circuit, a control module for controlling the current polarity direction of the semiconductor refrigeration plate is arranged on the integrated circuit board of the air conditioner body, a heat exchange coil in contact with the cold end of the semiconductor refrigeration plate is arranged on the battery coolant pipeline, a fan and a heat sink are arranged on the hot end of the semiconductor refrigeration plate, batteries and water pumps are also connected in series on the battery coolant pipeline, an expansion water tank for replenishing the battery coolant is connected in parallel on the battery coolant pipeline between the battery and the water pump, and a temperature sensor is arranged on the battery.
[0006] Based on the above, the heat exchange coil is a serpentine coil, and the heat exchange coil is laid flat on the cold end of the semiconductor refrigeration plate.
[0007] Based on the above, both the cold end and the hot end of the semiconductor refrigeration plate are provided with insulating ceramic sheets.
[0008] Based on the above, a heat-insulating material is arranged outside the contact point between the heat exchange coil and the cold end of the semiconductor refrigeration plate.
[0009] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model uses semiconductor refrigeration sheets to replace the existing plate heat exchanger 1, electronic expansion valve 2, first liquid supply valve 3 and pipeline components integrated in the air conditioner for cooling the battery, and the PTC water heater for heating the battery, which greatly reduces the number of components of the existing passenger car air conditioner, has a simple structure, is easy to assemble, occupies a small space, is environmentally friendly and energy-saving, the semiconductor refrigeration sheet has high cooling and heating efficiency, high energy efficiency conversion, effectively cools and heats the battery, has low noise, low vibration, high temperature control accuracy, simple control, and is not prone to battery thermal management failures; when the utility model uses the semiconductor refrigeration sheet to cool the battery, it does not occupy the overall cooling capacity of the air conditioner, and the overall cooling capacity of the air conditioner can be fully used in the passenger area, so that the car compartment is cooled faster, and the passenger comfort and the actual use rate of the air conditioner are improved.
[0010] To sum up, the utility model has a scientific design, greatly reduces the number of parts of existing bus air conditioners, has a simple structure, is easy to assemble, occupies a small space, is environmentally friendly and energy-saving, effectively cools and heats the battery, has low noise and vibration, and does not occupy the overall cooling capacity of the air conditioner when cooling the battery, thereby improving passenger comfort and the actual usage rate of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the air conditioning principle structure of the existing integrated battery liquid cooling system and heating system.
[0012] Figure 2 It is a schematic diagram of the principle structure of the utility model.
[0013] In the figure: 1. Plate heat exchanger; 2. Electronic expansion valve; 3. First liquid supply valve; 4. Electric compressor; 5. Check valve; 6. Condenser; 7. Liquid storage tank; 8. Dry filter; 9. Liquid sight glass; 10. Second liquid supply valve; 11. Expansion valve; 12. Evaporator; 13. Gas-liquid separator; 14. PTC water heater; 15. Battery; 16. Expansion water tank; 17. Water pump; 18. Semiconductor refrigeration sheet; 19. Heat exchange coil; 20. Insulating ceramic sheet; 21. N-type element; 22. P-type element; 23. DC power supply of air conditioner body; 24. Battery coolant pipeline. DETAILED DESCRIPTION
[0014] The technical solution of the utility model is further described in detail below through specific implementation methods.
[0015] like Figure 2 As shown, a vehicle air conditioner with an integrated semiconductor refrigeration system includes an air conditioner body, a semiconductor refrigeration sheet 18 and a battery coolant pipeline 24. The semiconductor refrigeration sheet 18 is electrically connected to a DC power supply 23 of the air conditioner body through a circuit. A control module for controlling the current polarity direction of the semiconductor refrigeration sheet 18 is provided on the integrated circuit board of the air conditioner body. A heat exchange coil 19 in contact with the cold end of the semiconductor refrigeration sheet 18 is provided on the battery coolant pipeline 24. A fan and a heat sink (not shown) are provided on the hot end of the semiconductor refrigeration sheet 18. A battery 15 and a water pump 17 are connected in series on the battery coolant pipeline 24 in sequence. An expansion water tank 16 for replenishing battery coolant is connected in parallel on the battery coolant pipeline 24 between the battery 15 and the water pump 17. A temperature sensor is provided on the battery 15 (not shown, a conventional setting, used to monitor the temperature of the battery 15 and transmit a signal to the control module to automatically control the cooling or heating of the semiconductor refrigeration sheet 18).
[0016] The heat exchange coil 19 is a serpentine coil, and the heat exchange coil 19 is laid flat on the cold end of the semiconductor refrigeration plate 18 .
[0017] Insulating ceramic sheets 20 are provided at both the cold end and the hot end of the semiconductor cooling sheet 18 .
[0018] A heat-insulating material is disposed outside the contact portion between the heat exchange coil 19 and the cold end of the semiconductor refrigeration plate 18 to provide heat insulation protection for the cold end of the heat exchange coil 19 and the semiconductor refrigeration plate 18 and to prevent the loss of cold.
[0019] The air conditioner body, semiconductor refrigeration plate 18, control module, fan, heat sink, battery coolant pipeline 24, heat exchange coil 19, expansion tank 16 and water pump 17 are all conventional technologies, and the specific structure and working principle are not repeated here. The control technology of the utility model is the conventional control circuit technology in this field and does not involve new computer programs.
[0020] The working principle of the utility model is as follows: when the battery 15 issues a cooling request, the semiconductor refrigeration sheet 18 is connected to the DC power supply 23 of the air conditioner body, and the current flows from the N-type element 21 of the semiconductor refrigeration sheet 18 to the P-type element 22. The cold end of the semiconductor refrigeration sheet 18 contacts the heat exchange coil 19 through the insulating ceramic sheet 20 to exchange heat. At the same time, the hot end of the semiconductor refrigeration sheet 18 uses a fan and a heat sink to dissipate heat. The cold end of the semiconductor refrigeration sheet 18 can continuously generate cold energy to cool the battery coolant. The water pump 17 pumps the battery coolant to the battery 15 through the battery coolant pipeline 24 to dissipate heat for the battery 15. After the battery coolant takes away the heat of the battery 15, it circulates to the heat exchange coil 19 through the water pump 17 and transfers the heat to the cold end of the semiconductor refrigeration sheet 18. The cooling effect is good and the efficiency is high. The expansion water tank 16 replenishes the battery coolant to the battery coolant pipeline 24.
[0021] When the battery 15 issues a heating request, the control module changes the current polarity direction of the semiconductor cooling sheet 18, so that the current flows from the P-type element 22 of the semiconductor cooling sheet 18 to the N-type element 21, and the cold end that was originally in contact with the heat exchange coil 19 becomes the hot end, and the original hot end becomes the cold end. Then, the hot end at this time continuously heats the battery coolant through heat exchange with the heat exchange coil 19, thereby heating the battery 15, and the heating efficiency is high;
[0022] In this way, the existing plate heat exchanger 1, electronic expansion valve 2, first liquid supply valve 3, pipeline components and PTC water heater 14 integrated in the air conditioner are omitted, the structure is simple, the assembly is convenient, and the space occupation is small.
[0023] The utility model uses a semiconductor refrigeration sheet 18 to replace the existing plate heat exchanger 1, electronic expansion valve 2, first liquid supply valve 3 and pipeline components integrated in the air conditioner for cooling the battery 15, and the PTC water heater 14 for heating the battery 15, which greatly reduces the parts of the existing passenger car air conditioner, has a simple structure, is easy to assemble, occupies a small space, is environmentally friendly and energy-saving, and the semiconductor refrigeration sheet 18 has high cooling and heating efficiency and high energy efficiency conversion, and can effectively cool and heat the battery 15, with low noise, low vibration, high temperature control accuracy, simple control, and is not prone to battery thermal management failures; when the utility model uses the semiconductor refrigeration sheet 18 to cool the battery 15, it does not occupy the overall cooling capacity of the air conditioner, and the overall cooling capacity of the air conditioner can be fully used in the passenger area, so that the car is cooled faster, and the passenger comfort and the actual use rate of the air conditioner are improved.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.
Claims
1. A vehicle air conditioner with an integrated semiconductor refrigeration system, characterized in that: It includes an air conditioner body, a semiconductor refrigeration sheet and a battery coolant pipeline. The semiconductor refrigeration sheet is electrically connected to the DC power supply of the air conditioner body through a circuit. A control module for controlling the current polarity direction of the semiconductor refrigeration sheet is arranged on the integrated circuit board of the air conditioner body. A heat exchange coil in contact with the cold end of the semiconductor refrigeration sheet is arranged on the battery coolant pipeline. A fan and a heat sink are arranged on the hot end of the semiconductor refrigeration sheet. Batteries and water pumps are also connected in series on the battery coolant pipeline in sequence. An expansion water tank for replenishing battery coolant is connected in parallel on the battery coolant pipeline between the battery and the water pump. A temperature sensor is arranged on the battery.
2. The vehicle air conditioner with integrated semiconductor refrigeration system according to claim 1, characterized in that: The heat exchange coil is a serpentine coil, and the heat exchange coil is laid flat on the cold end of the semiconductor refrigeration plate.
3. The vehicle air conditioner with integrated semiconductor refrigeration system according to claim 1, characterized in that: The cold end and the hot end of the semiconductor refrigeration plate are both provided with insulating ceramic sheets.
4. The vehicle air conditioner with integrated semiconductor refrigeration system according to claim 1, characterized in that: The outside of the contact point between the heat exchange coil and the cold end of the semiconductor refrigeration plate is provided with a heat preservation material.