Whole vehicle waterway system used for being matched with air conditioner pure secondary loop heat exchange

Abstract

The utility model relates to the technical field of air conditioning system waterways, in particular to a whole vehicle waterway system used for being matched with heat exchange of a pure secondary loop of an air conditioner, which comprises a driving module, a plate heat exchanger, a water-cooled condenser and a control valve module used for controlling circulation of a pipeline. One end of the plate heat exchanger and one end of the water-cooling condenser are connected to the driving module, the other ends of the plate heat exchanger and the water-cooling condenser are connected to the air conditioner box, and the driving module is connected to the control valve module and the battery pack; the driving module comprises a first driving water pump, a second driving water pump and a third driving water pump, the control valve module comprises a multi-way valve, a one-way valve and a three-way proportional valve, and the multi-way valve is connected with the one-way valve and the three-way proportional valve through pipelines. According to the utility model, the effective temperature control function of the battery and the passenger compartment under various working conditions is successfully realized under the condition that only one heat release component and one heat absorption component are arranged.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning system water road technical field especially is related to a whole vehicle water road system for matching air conditioning pure secondary loop heat exchange. BACKGROUND

[0002] In the modern automobile engineering field, the influence of thermal management system on the whole vehicle performance is increasingly significant, especially with the rise of electric vehicles, battery thermal management becomes one of the key technologies, which is directly related to the performance, life and safety of the battery, at the same time, the thermal comfort of the passenger compartment is also an important indicator to measure the quality of the automobile, the water road system design of the automobile air conditioning system as the core part of the thermal management is very important.

[0003] But at present, when the air conditioning system of pure secondary loop heat exchange is applied to the whole vehicle, the existing design often can not balance the cooling or heating demand of the battery and the passenger compartment. In most cases, in order to realize the temperature control of both, complex additional components or control strategy is needed, although some schemes try to meet the demand of both, but in actual operation, there are problems of unstable battery temperature control affecting battery life and passenger compartment temperature fluctuation affecting ride comfort, in addition, the current air conditioning water road system often faces problems of limited space layout, complex pipeline connection and other problems when integrated with other systems of the whole vehicle, which not only increases the installation difficulty and cost of the system, but also reduces the reliability of the system, the complex connection structure is easy to leak and other faults, which affects the normal operation of the whole thermal management system, and further has negative impact on the vehicle performance, at present, a whole vehicle water road system for matching air conditioning pure secondary loop heat exchange is needed. UTILITY MODEL CONTENTS

[0004] In order to solve the problems of difficult function cooperation and complex pipeline connection in the water road system, the utility model provides a whole vehicle water road system for matching air conditioning pure secondary loop heat exchange.

[0005] In the first aspect, the utility model provides a whole vehicle water road system for matching air conditioning pure secondary loop heat exchange, adopts the following technical scheme:

[0006] A whole vehicle water road system for matching air conditioning pure secondary loop heat exchange, comprising:

[0007] Driving module, plate heat exchanger, water-cooled condenser and control valve module for controlling pipeline flow, the plate heat exchanger and water-cooled condenser are connected to the driving module at one end, and connected to the air conditioning box at the other end, the driving module is connected to the control valve module and the battery pack respectively;

[0008] The driving module comprises a first driving water pump, a second driving water pump and a third driving water pump, the control valve module comprises a multi-way valve, a one-way valve and a three-way proportional valve, and the multi-way valve is connected with the one-way valve and the three-way proportional valve through pipelines respectively.

[0009] Further, the multi-way valve has multiple interfaces, and the multi-way valve is connected with a battery pack, a heating core and a plate heat exchanger through the multiple interfaces respectively, so as to conduct the cooling liquid passage between the battery pack, the heating core and the plate heat exchanger in different working modes.

[0010] Further, a first port of the three-way proportional valve is connected with the plate heat exchanger, a second port of the three-way proportional valve is connected with the battery pack, and a third port of the three-way proportional valve is communicated with an outlet pipeline of the first water pump and a battery pack self-circulation pipeline where the one-way valve is located through a pipeline, so as to accurately adjust the cooling liquid flow from the plate heat exchanger to the battery pack.

[0011] Further, the one-way valve is installed on the cooling liquid pipeline of the battery pack self-circulation, so as to keep the one-way flow of the cooling liquid in the process of the battery pack self-circulation, and the one-way valve cooperates with the three-way proportional valve to affect the mixing ratio and temperature of the cooling liquid at the battery pack inlet.

[0012] Further, an inlet of the first driving water pump is connected with a cooling liquid outlet of the battery pack and a cooling liquid outlet of the refrigeration core, and an outlet of the first driving water pump is connected with a cooling liquid inlet pipeline of the plate heat exchanger.

[0013] Further, an inlet of the second driving water pump is connected with the multi-way valve, and the inlet of the second driving water pump is connected with an input end of the water-cooled condenser.

[0014] Further, one end of the third driving water pump is connected with the refrigeration core, the heating core and the plate heat exchanger in the air conditioning box through a pipeline, and the other end of the third driving water pump is connected with the battery pack.

[0015] Further, the plate heat exchanger comprises multiple layers of heat exchange plates, and flow channels for circulating the cooling liquid are formed between the heat exchange plates.

[0016] Further, a gradually expanding converging chamber is arranged at the cooling liquid outlet of the plate heat exchanger, so as to reduce the flow rate of the cooling liquid.

[0017] Further, the plate heat exchanger, the battery pack, the heating core in the air conditioning box and the water-cooled condenser form a closed loop through pipelines, so as to realize heat absorption and transmission.

[0018] In summary, the utility model has the beneficial technical effects as follows:

[0019] 1. The utility model discloses a heat release component (water cooling condenser) and a heat absorption component (plate heat exchanger) are equipped, and the effective temperature control function of battery and passenger cabin under various working conditions (simultaneous refrigeration or heating, refrigeration or heating alone) is realized successfully, compared with prior art, the independent heat release and heat absorption component of battery pack and passenger cabin need not be equipped respectively, the system structure is simplified greatly, the number of parts is reduced, the system cost is reduced, the reliability and stability of system are improved.

[0020] 2. The utility model discloses through the synergies of three -way proportional valve and check valve etc. component, can according to the actual demand of battery and passenger cabin, accurate control cooling liquid flow and mixed proportion, realize the accurate adjustment of two entrance water temperature under different working conditions, improve the working efficiency and life of battery, improve the thermal comfort of passenger cabin simultaneously.

[0021] 3. The utility model discloses the innovative design of check valve, three -way proportional valve mixed liquid regulation, compared with traditional water-water heat exchanger regulation mode, reduces a level of heat exchange path, effectively reduces the heat loss. This makes the energy consumption of air conditioning system in the operation process reduce significantly, improves the energy utilization efficiency, especially for electric vehicle etc. sensitive application scene of energy consumption, helps to prolong the cruising range, meets the development trend of modern energy saving and environmental protection. DRAWINGS

[0022] Figure 1 It is a whole structure connection schematic drawing in the vehicle waterway system for matching air conditioning pure secondary circuit heat exchange of the utility model embodiment.

[0023] Figure 2 It is the structure connection schematic drawing when battery and passenger cabin are heated simultaneously of the utility model embodiment.

[0024] Figure 3 It is the structure connection schematic drawing when battery and passenger cabin are refrigerated simultaneously of the utility model embodiment.

[0025] Figure 4 It is the refrigeration flow chart of the vehicle waterway system of the utility model embodiment.

[0026] Figure 5 It is the heating flow chart of the vehicle waterway system of the utility model embodiment. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail below in connection with the drawings.

[0028] Embodiment 1

[0029] Referring to Figure 1 , a vehicle waterway system for matching air conditioning pure secondary circuit heat exchange of the utility model embodiment, it includes:

[0030] The driving module, plate heat exchanger, water-cooled condenser and control valve module for controlling the pipeline flow, the plate heat exchanger and the water-cooled condenser are connected to the driving module at one end and connected to the air conditioning box at the other end, and the driving module is connected to the control valve module and the battery pack respectively;

[0031] The driving module includes a first driving water pump, a second driving water pump and a third driving water pump, the control valve module includes a multi-way valve, a one-way valve and a three-way proportional valve, and the multi-way valve is connected to the one-way valve and the three-way proportional valve through a pipeline.

[0032] Specifically,

[0033] As Figure 1 shown, the embodiment is explained in detail from the following four aspects according to the connection relationship of the waterway system;

[0034] 1. As Figure 3 , Figure 4 shown, the battery and the passenger compartment are cooled at the same time;

[0035] When the vehicle detects that the battery temperature is too high and the passenger compartment needs to be cooled, the control system starts the cooling mode.

[0036] First, the first driving water pump starts to start, the inlet is connected to the cooling liquid outlet of the battery pack and the cooling liquid outlet of the refrigeration core body, at this time, the cooling liquid in the battery pack is heated due to the heat generated by the battery, the refrigerant in the refrigeration core body is evaporated to absorb heat and reduce its temperature, and the surrounding cooling liquid temperature also decreases, the first driving water pump extracts the cooling liquid with higher temperature from the battery pack and the refrigeration core body, and then delivers the cooling liquid to the cooling liquid inlet pipeline of the plate heat exchanger through the outlet.

[0037] The plate heat exchanger absorbs heat and cools down, the cooling liquid enters the plate heat exchanger, and the cooling liquid flows in the flow channel between the multiple layers of heat exchange plates in the plate heat exchanger, the narrow flow channel between the heat exchange plates increases the contact area between the cooling liquid and the external refrigerant (or other heat exchange medium), and the heat exchange efficiency is improved, the heat in the cooling liquid is efficiently absorbed by the plate heat exchanger, and the temperature is reduced.

[0038] At the same time, the three-way proportional valve adjusts its opening according to the control system instructions, and its first port is connected to the plate heat exchanger. At this time, a part of the low-temperature coolant flowing out of the plate heat exchanger flows to the battery pack after the flow is adjusted by the three-way proportional valve. The third port of the three-way proportional valve is connected to the outlet pipe of the first water pump and the battery pack self-circulation pipe where the one-way valve is located through a pipe, so that this part of the low-temperature coolant is mixed with the coolant of the battery pack self-circulation at the battery pack inlet. A check valve is installed in the battery pack's self-circulating coolant pipeline, ensuring unidirectional coolant flow and preventing backflow. Working in conjunction with the three-way proportional valve, it precisely controls the coolant mixing ratio and temperature at the battery pack inlet, achieving precise regulation of the inlet water temperature and rapidly cooling the battery pack. The remaining low-temperature coolant continues to circulate through the system, passing through a third drive water pump (one end of which is connected to the cooling core, heater core, and plate heat exchanger in the air conditioning unit, and the other end to the battery pack) and then being delivered to the heater core in the air conditioning unit. Simultaneously, the second drive water pump is activated, with its inlet connected to the multi-way valve and its outlet connected to the input of the water-cooled condenser. During simultaneous cooling of both the battery and passenger compartment, the second drive water pump delivers a portion of the coolant distributed by the multi-way valve to the water-cooled condenser. The water-cooled condenser, acting as the system's heat dissipation component, releases heat from the coolant to the ambient air, effectively reducing the coolant temperature and ensuring thermal balance across the entire system.

[0039] Inside the air conditioning unit, the blower operates, blowing air through the heater core. There, the low-temperature coolant exchanges heat with the air, absorbing heat from the air and lowering its temperature. This coolant is then sent into the passenger compartment, cooling it. After absorbing heat, the coolant's temperature rises and flows back through a pipe to the inlet of the first drive water pump, re-entering the cycle. This process repeats until the battery and passenger compartment reach the set comfortable temperature range.

[0040] 2. Such as Figure 5 As shown, the battery and passenger compartment are heated simultaneously;

[0041] like Figure 2 As shown, the first drive water pump and the third drive water pump start to start. At this time, the working principle of the plate heat exchanger changes. It starts to absorb external heat, causing the coolant temperature to increase, realizing the reverse process of the refrigeration function.

[0042] The heat released by the battery pack is transmitted through the coolant. Under the action of the first drive water pump, the coolant flows out of the battery pack and passes through the three-way proportional valve. The three-way proportional valve adjusts the flow of coolant from the plate heat exchanger to the battery pack and mixes with the coolant self-circulating in the battery pack to adjust the battery pack inlet temperature so that the battery pack can be heated stably.

[0043] At the same time, another part of the cooling liquid is driven by the third driving water pump to flow to the warm air core in the air conditioning box. In the warm air core, the high-temperature cooling liquid exchanges heat with the air blown in by the air blower, transfers heat to the air to increase the temperature of the air, and the hot air is sent into the passenger cabin to heat the passenger cabin. The temperature of the heated air decreases, and the temperature of the cooling liquid slightly decreases after absorbing the heat of the air, and then flows back to the inlet of the first driving water pump through the pipeline, and enters the cycle again to continuously provide heat for the battery and the passenger cabin until the set temperature is reached.

[0044] 3. Separate battery cooling or heating;

[0045] Separate battery cooling: when only the battery pack needs to be cooled, the water pump 1 (first driving water pump) works, the multi-way valve is adjusted to a state in which the battery pack and the plate heat exchanger are separately communicated, the cooling liquid circulates between the battery pack and the plate heat exchanger, absorbs the heat of the battery pack and releases it in the plate heat exchanger, and the precise control of the inlet temperature of the battery pack is realized by adjusting the three-way proportional valve.

[0046] Separate battery heating: when only the battery pack needs to be heated, the water pump 1 is started, the multi-way valve is adjusted to a state in which the battery pack and the plate heat exchanger are communicated, the plate heat exchanger absorbs heat to reduce the temperature of the cooling liquid, and the heat released by the battery pack is transmitted to the plate heat exchanger through the cooling liquid. The three-way proportional valve is adjusted to control the flow of the cooling liquid to adjust the inlet temperature of the battery pack.

[0047] 4. Separate passenger cabin cooling or heating;

[0048] Separate passenger cabin cooling: the water pump 3 (third driving water pump) works, the multi-way valve is adjusted to a state in which only the warm air core and the plate heat exchanger are communicated, the cooling liquid is cooled by the evaporative cooling core to reduce the temperature of the cooling liquid, and the cooling liquid is cooled by the evaporative cooling core to reduce the temperature of the cooling liquid. The air is pushed by the air blower to realize the cooling of the passenger cabin, and the temperature is further adjusted by the plate heat exchanger to improve the cooling efficiency.

[0049] Separate passenger cabin heating: the water pump 3 operates, the multi-way valve makes the warm air core and the plate heat exchanger communicate, at this time the plate heat exchanger absorbs heat to reduce the temperature of the cooling liquid (reverse working), the cooling liquid exchanges heat with the air in the warm air core, heats the air and sends it into the passenger cabin to realize the heating of the passenger cabin.

[0050] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A vehicle water system for matching the pure secondary circuit heat exchange of air conditioning, characterized in that: include: A drive module, a plate heat exchanger, a water-cooled condenser, and a control valve module for controlling pipeline circulation. The plate heat exchanger and the water-cooled condenser are connected to the drive module at one end and to the air conditioning box at the other end. The drive module is connected to the control valve module and the battery pack respectively. The driving module includes a first driving water pump, a second driving water pump and a third driving water pump. The control valve module includes a multi-way valve, a one-way valve and a three-way proportional valve. The multi-way valve is connected to the one-way valve and the three-way proportional valve through pipelines.

2. A vehicle water system for matching the pure secondary circuit heat exchange of air conditioners according to claim 1, characterized in that: The multi-way valve has multiple interfaces, which are respectively connected to the battery pack, heater core and plate heat exchanger through the multiple interfaces, and are used to conduct the coolant passage between the battery pack, heater core and plate heat exchanger in different working modes.

3. The vehicle water system for matching the pure secondary circuit heat exchange of air conditioners according to claim 1, characterized in that: The first port of the three-way proportional valve is connected to the plate heat exchanger, the second port of the three-way proportional valve is connected to the battery pack, and the third port of the three-way proportional valve is connected to the outlet pipe of the first water pump and the battery pack self-circulation pipe where the one-way valve is located through a pipe, which is used to accurately adjust the flow of coolant flowing from the plate heat exchanger to the battery pack.

4. The vehicle water system for matching the pure secondary circuit heat exchange of air conditioners according to claim 1, characterized in that: The one-way valve is installed on the coolant pipeline of the battery pack self-circulation to maintain one-way flow of the coolant during the battery pack self-circulation process. The one-way valve works together with the three-way proportional valve to affect the mixing ratio and temperature of the coolant at the battery pack inlet.

5. The vehicle water system for matching the pure secondary loop heat exchange of air conditioners according to claim 1, characterized in that: The inlet of the first driving water pump is connected to the coolant outlet of the battery pack and the coolant outlet of the refrigeration core, and the outlet of the first driving water pump is connected to the coolant inlet pipe of the plate heat exchanger.

6. The vehicle water system for matching the pure secondary loop heat exchange of air conditioners according to claim 1, characterized in that: The inlet of the second driving water pump is connected to the multi-way valve, and the inlet of the second driving water pump is connected to the input end of the water-cooled condenser.

7. The vehicle water system for matching the pure secondary loop heat exchange of air conditioners according to claim 1, characterized in that: One end of the third driving water pump is connected to the refrigeration core, the heating core and the plate heat exchanger in the air-conditioning box through a pipeline, and the other end of the third driving water pump is connected to the battery pack.

8. The vehicle water system for matching the pure secondary circuit heat exchange of air conditioners according to claim 1, characterized in that: The plate heat exchanger includes multiple layers of heat exchange plates, and flow channels for circulating coolant are formed between the heat exchange plates.

9. The vehicle water system for matching the pure secondary loop heat exchange of air conditioners according to claim 8, characterized in that: A gradually expanding converging chamber is used at the coolant outlet of the plate heat exchanger to reduce the flow rate of the coolant.

10. The vehicle water system for matching the pure secondary circuit heat exchange of air conditioners according to claim 9, characterized in that: The plate heat exchanger, the battery pack, the heater core inside the air-conditioning box, and the water-cooled condenser form a closed loop through pipes to achieve heat absorption and transfer.

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