A heating pipeline of a warm air water tank
By introducing heating fluid from the battery cooling circuit into the heater core, the heating of the heater core is accelerated by utilizing the battery cooling circuit, thus solving the problem of slow heating speed in new energy vehicles and achieving rapid heating and reduced energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING AUTOMOBILE WORKS CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-03
AI Technical Summary
New energy vehicles have slow heating speeds due to insufficient PTC power, resulting in slower heating compared to gasoline vehicles. Additionally, PTC hardware installation is difficult, and there are issues with excessively high voltage.
Design a heater core heating pipeline, including a PTC heater core heating circuit, a battery cooling circuit and an engine cooling circuit. By introducing the heated coolant from the battery cooling circuit into the heater core, the heater in the battery cooling circuit is used to accelerate the heating of the heater core.
It accelerates the heating speed of the heater core, improves the heating speed of new energy vehicles, reduces energy consumption, and solves the problem of slow heating speed caused by the low power of the PTC heater.
Smart Images
Figure CN224447400U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive technology, and more specifically, it relates to a heater core heating pipe. Background Technology
[0002] Heating in new energy vehicles mainly relies on PTC (Power Transmission Control) systems, and the power output of the PTC determines the heating speed. Research and market surveys have revealed that if the PTC power is too low, the heating speed is much slower compared to gasoline vehicles, impacting the user's driving experience. To ensure a certain heating speed, the PTC power needs to be increased, which will result in faster heating, but this also leads to problems such as excessively high voltage requirements and difficulties in installing large PTC hardware. Summary of the Invention
[0003] The purpose of this invention is to provide a heating pipe for a heater tank to overcome the problem of slow heating speed in new energy vehicles in the prior art.
[0004] This utility model is achieved using the following technical solution: a heating pipe for a warm air tank, comprising a PTC tank heating circuit and a battery cooling circuit; the PTC tank heating circuit includes a PTC heater, a first water pump, a second three-way valve, a third three-way valve, a warm air tank, and a first temperature sensor; the battery cooling circuit includes a heat exchanger, a battery cooling tank, a second water pump, a battery, a first three-way valve, and a second temperature sensor; the battery cooling circuit connects to the first three-way valve at one end of the battery via an eighth branch pipe; the first three-way valve connects to the battery cooling tank and the warm air tank via a first branch pipe and a second branch pipe, respectively; the warm air tank and the battery cooling tank are connected to the second three-way valve via a third branch pipe and a fourth branch pipe, respectively; the third three-way valve connects to the warm air tank and the battery cooling tank via a fifth branch pipe and a sixth branch pipe, respectively; and the second temperature sensor is mounted on the eighth branch pipe.
[0005] Furthermore, the PTC water tank heating circuit is connected to a third three-way valve at one end of the PTC heater via a seventh branch pipe, and the first temperature sensor is installed on the seventh branch pipe.
[0006] Furthermore, it also includes an engine cooling circuit, which includes an engine, a radiator, a third water pump, a first three-way pipe, and a second three-way pipe. The first three-way pipe is located between the radiator outlet and the engine, and the second three-way pipe is located between the radiator inlet and the engine. The PTC water tank heating circuit is also equipped with a fourth three-way valve and a fifth three-way valve. The fourth three-way valve is connected to the fifth three-way valve through a branch pipe. The fourth three-way valve is also connected to the first three-way pipe through a branch pipe, and the fifth three-way valve is also connected to the second three-way pipe through a branch pipe.
[0007] Compared with the prior art, the beneficial effects of this utility model are:
[0008] This invention accelerates the heating speed of the heater core by introducing the heated coolant from the battery cooling circuit into the heater core. When the heater in a new energy vehicle is turned on, the PTC heater's power is often relatively low, resulting in a slow heating speed of the coolant in the PTC heater circuit. This invention introduces the battery-heated coolant from the battery cooling circuit into the heater core at the initial stage of turning on the heater core, thus accelerating the temperature rise of the coolant in the heater core. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the present invention;
[0010] Figure 2 This is a schematic diagram of the present invention including an engine cooling circuit 3.
[0011] In the diagram: 1. PTC water tank heating circuit; 2. Battery cooling circuit; 3. Engine cooling circuit; 4. PTC heater; 5. First water pump; 6. Second three-way valve; 7. Heater water tank; 8. First temperature sensor; 9. Heat exchanger; 10. Battery cooling water tank; 11. Second water pump; 12. Battery; 13. Second temperature sensor; 14. First three-way valve; 15. First branch pipe; 16. Second branch pipe; 17. Third branch pipe; 18. Fourth branch pipe; 19. Third three-way valve; 20. Fifth branch pipe; 21. Sixth branch pipe; 22. Engine; 23. Radiator; 24. Third water pump; 25. First three-way pipe; 26. Second three-way pipe; 27. Fourth three-way valve; 28. Fifth three-way valve; 29. Seventh branch pipe; 30. Eighth branch pipe. Detailed Implementation
[0012] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort should fall within the scope of protection of this utility model.
[0013] A heater core heating pipe includes a PTC heater core heating circuit 1, a battery cooling circuit 2, and an engine cooling circuit 3, as shown in the attached diagram. Figure 1 and 2 As shown, the PTC water tank heating circuit 1 is marked with the number symbol ①, the battery cooling circuit 2 is marked with the number symbol ②, and the engine cooling circuit 3 is marked with the number symbol ③.
[0014] The PTC water tank heating circuit 1 is equipped with a PTC heater 4, a first water pump 5, a second three-way valve 6, a third three-way valve 19, a warm air water tank 7, and a first temperature sensor 8.
[0015] The first temperature sensor 8 of this invention can detect the temperature of the coolant in the PTC water tank heating circuit 1, the PTC heater 4 can heat the coolant in the PTC water tank heating circuit 1, and the first water pump 5 drives the coolant in the PTC water tank heating circuit 1 to circulate. The coolant in the PTC water tank heating circuit 1 will flow through the heater tank 7 and heat the shell of the heater tank 7.
[0016] This utility model also includes a battery cooling circuit 2, which is used to cool the power battery in the new energy vehicle. The battery cooling circuit 2 is equipped with a heat exchanger 9, a battery cooling water tank 10, a second water pump 11, a battery 12, and a second temperature sensor 13. The battery cooling circuit 2 is connected to a first three-way valve 14 at one end of the battery 12 through an eighth branch pipe 30. The first three-way valve 14 is connected to the battery cooling water tank 10 and the heater water tank 7 through a first branch pipe 15 and a second branch pipe 16, respectively. The second temperature sensor 13 is installed on the eighth branch pipe 30 and can detect the temperature of the coolant flowing out of the battery 12 end in the battery cooling circuit 2.
[0017] The heat exchanger 9 in the battery cooling circuit 2 can cool the coolant in the battery cooling circuit 2. The cooled coolant flows to the pipe at the battery 12 end and cools the battery 12. The cooled coolant after being heated by the battery 12 enters the first three-way valve 14. When the first three-way valve 14 is connected to the first branch pipe 15, the heated coolant will enter the battery cooling water tank 10 and enter the pipe at the heat exchanger 9 end through the battery cooling water tank 10. When the first three-way valve 14 is connected to the second branch pipe 16, the heated coolant will enter the heater water tank 7 and heat the heater water tank 7. The second water pump 11 drives the coolant in the battery cooling circuit 2 to circulate.
[0018] The warm air tank 7 and the battery cooling water tank 10 are respectively connected to the second three-way valve 6 through the third branch pipe 17 and the fourth branch pipe 18.
[0019] The second three-way valve 6 of this utility model can disconnect the PTC water tank heating circuit 1, and at the same time connect the third branch pipe 17 and the fourth branch pipe 18. In this way, under the action of the second water pump 11, the coolant in the heater tank 7 will enter the battery cooling water tank 10 through the third branch pipe 17 and the fourth branch pipe 18.
[0020] The third three-way valve 19 is connected to the heater tank 7 and the battery cooling tank 10 via the fifth branch pipe 20 and the sixth branch pipe 21, respectively. Both the heater tank 7 and the battery cooling tank 10 are located between the second three-way valve 6 and the third three-way valve 19. The PTC water tank heating circuit 1 is connected to the third three-way valve 19 at one end of the PTC heater 4 via the seventh branch pipe 29. The first temperature sensor 8 is installed on the seventh branch pipe 29.
[0021] The PTC water tank heating circuit 1 of this utility model is also connected to a kettle. The kettle can replenish coolant to the PTC water tank heating circuit 1. The kettle can also replenish coolant to the battery cooling circuit 2 through the third three-way valve 19. When the amount of coolant in the battery cooling water tank 10 decreases, the third three-way valve 19 connects to the sixth branch pipe 21, and the kettle replenishes coolant to the battery cooling water tank 10 through the sixth branch pipe 21. When there is a lot of coolant in the battery cooling water tank 10, the fourth branch pipe 18 can be connected to the PTC water tank heating circuit 1 by controlling the second three-way valve 6, and the coolant in the battery cooling water tank 10 can be drawn into the PTC water tank heating circuit 1.
[0022] It also includes an engine cooling circuit 3, which includes an engine 22, a radiator 23, a third water pump 24, a first three-way pipe 25, and a second three-way pipe 26. The first three-way pipe 25 is located between the outlet of the radiator 23 and the engine 22, and the second three-way pipe 26 is located between the inlet of the radiator 23 and the engine 22. The PTC water tank heating circuit 1 is also equipped with a fourth three-way valve 27 and a fifth three-way valve 28, which are connected by a branch pipe. The fourth three-way valve 27 is also connected to the first three-way pipe 25 through a branch pipe, and the fifth three-way valve 28 is also connected to the second three-way pipe 26 through a branch pipe. The engine cooling circuit 3 is also equipped with a temperature sensor.
[0023] This invention reduces the energy consumption of automotive heating and air conditioning by setting up an engine cooling circuit 3. When an engine 22 is installed in a new energy vehicle and the engine 22 is in the on state, the branch pipe between the fourth three-way valve 27 and the fifth three-way valve 28 can be disconnected, and the fourth three-way valve 27 can be connected to the first three-way pipe 25, while the fifth three-way valve 28 and the second three-way pipe 26 can be connected. In this way, under the drive of the first water pump 5, part of the coolant in the engine cooling circuit 3 after being heated by the engine 22 will be pumped into the PTC water tank heating circuit 1 to participate in circulation, while the coolant after being cooled by the heater core 7 will be transported to the engine cooling circuit 3.
[0024] The working principle of this utility model is as follows: When the heating air conditioner of a new energy vehicle is turned on, the controller controls the PTC heater 4 in the PTC water tank heating circuit 1 to start working and heat the coolant in the PTC water tank heating circuit 1. However, since the power of the PTC heater 4 is often relatively small, the heating speed of the coolant in the PTC water tank heating circuit 1 is relatively slow. At this time, when the second temperature sensor 13 senses that the temperature of the coolant flowing out of the battery 12 in the battery cooling circuit 2 has reached a certain temperature, the controller controls the first three-way valve 14 to connect the second branch pipe 16 and disconnect the first branch pipe 15, the second three-way valve 6 to connect the third branch pipe 17 and the fourth branch pipe 18 and disconnect the PTC water tank heating circuit 1, and the third three-way valve 19 also disconnects the PTC water tank heating circuit 1. In this way, the coolant heated by the battery 12 can enter the heater core 7 and rapidly heat up the heater core 7. The second water pump 11 drives the coolant in the battery cooling circuit 2 to circulate.
[0025] When the first temperature sensor 8 senses that the temperature of the coolant in the PTC water tank heating circuit 1 has reached the set value, the controller controls the first three-way valve 14 to connect the first branch pipe 15 and disconnect the second branch pipe 16, the second three-way valve 6 to disconnect the fourth branch pipe 18 and connect the PTC water tank heating circuit 1, and the third three-way valve 19 to connect the PTC water tank heating circuit 1. This prevents the coolant in the battery cooling circuit 2 from entering the heater tank 7, while the coolant in the PTC water tank heating circuit 1, after being heated by the PTC heater 4, will enter the heater tank.
Claims
1. A heating pipe system for a warm air water tank, characterized in that, It includes a PTC water tank heating circuit (1) and a battery cooling circuit (2); the PTC water tank heating circuit (1) is equipped with a PTC heater (4), a first water pump (5), a second three-way valve (6), a third three-way valve (19), a warm air tank (7), and a first temperature sensor (8); the battery cooling circuit (2) is equipped with a heat exchanger (9), a battery cooling water tank (10), a second water pump (11), a battery (12), a first three-way valve (14), and a second temperature sensor (13); the battery cooling circuit (2) is connected to the battery (12) by an eighth branch pipe (3). 0) Connect the first three-way valve (14). The first three-way valve (14) is connected to the battery cooling water tank (10) and the heater tank (7) through the first branch pipe (15) and the second branch pipe (16), respectively. The heater tank (7) and the battery cooling water tank (10) are connected to the second three-way valve (6) through the third branch pipe (17) and the fourth branch pipe (18), respectively. The third three-way valve (19) is connected to the heater tank (7) and the battery cooling water tank (10) through the fifth branch pipe (20) and the sixth branch pipe (21), respectively. The second temperature sensor (13) is set on the eighth branch pipe (30).
2. The heating line of the heater core according to claim 1, wherein The PTC water tank heating circuit (1) is connected to the third three-way valve (19) through the seventh branch pipe (29) at one end of the PTC heater (4), and the first temperature sensor (8) is installed on the seventh branch pipe (29).
3. The heating line of the heater core according to claim 1, wherein It also includes an engine cooling circuit (3), in which an engine (22), a radiator (23), a third water pump (24), a first three-way pipe (25) and a second three-way pipe (26) are provided. The first three-way pipe (25) is located between the outlet of the radiator (23) and the engine (22), and the second three-way pipe (26) is located between the inlet of the radiator (23) and the engine (22). The PTC water tank heating circuit (1) is also provided with a fourth three-way valve (27) and a fifth three-way valve (28). The fourth three-way valve (27) is connected to the fifth three-way valve (28) through a branch pipe. The fourth three-way valve (27) is also connected to the first three-way pipe (25) through a branch pipe. The fifth three-way valve (28) is also connected to the second three-way pipe (26) through a branch pipe.