Heat exchange method and heat exchange system

Abstract

The present invention provides a heat exchange method and a heat exchange system. After the vehicle starts driving, the heating data of multiple heating systems of the vehicle in the current preset period is obtained; the multiple heating systems include an electric drive system, a battery system, and a passenger compartment system; based on the heating data of each heating system, the estimated heat exchange output of the heat exchange system corresponding to each heating system in the next preset period is confirmed; based on the estimated heat exchange output of each heat exchange system, the refrigerant valve control strategy of each heat exchange system in the next preset period is confirmed; in the next preset period, each heat exchange system performs heat exchange according to the refrigerant valve control strategy. The present invention solves the technical problems existing in the prior art that the heat dissipation system only dissipates heat when the temperature of the component rises, cannot perform targeted heat dissipation on each component according to the operating conditions of each component, and its heat dissipation intensity and the adjustable range of the heat dissipation intensity are limited.

Description

Technical Field

[0001] The present invention relates to the field of heat exchange technology, and in particular to a heat exchange method and a heat exchange system. Background Art

[0002] With the development of the automotive industry, the matching structure of vehicle power systems has become increasingly complex. Many power devices require liquid cooling. In addition, the power of key power system components such as motors, electronic controls, and batteries has also increased, which has brought with it an increasing demand for heat dissipation. Traditionally, cooling methods connect coolant circuits and circulate them through a water pump. The radiator exchanges heat with the ambient air to cool the components. The cooling intensity can be adjusted by increasing the speed of the radiator fan and the speed of the water pump.

[0003] However, this approach has limitations. On the one hand, the cooling system only dissipates heat when the temperature of the components rises, and cannot provide targeted cooling for each component based on its operating conditions. On the other hand, the cooling intensity and adjustable range of each cooling system are limited. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention provides a heat exchange method and a heat exchange system, which solve the technical problems in the prior art that the heat dissipation system only dissipates heat when the temperature of the component rises, cannot dissipate heat for each component in a targeted manner according to the operating conditions of each component, and has limited heat dissipation intensity and an adjustable range of heat dissipation intensity.

[0005] In one aspect, the present invention provides a heat exchange method, comprising:

[0006] After the vehicle starts driving, heat data of multiple heating systems of the vehicle within the current preset period is obtained; the multiple heating systems include the electric drive system, the battery system, and the passenger compartment system;

[0007] Based on the heating data of each heating system, determining the estimated heat exchange output of the heat exchange system corresponding to each heating system in the next preset period;

[0008] Based on the estimated heat exchange output of each heat exchange system, determine the refrigerant valve control strategy of each heat exchange system in the next preset cycle;

[0009] In the next preset period, each heat exchange system performs heat exchange according to the refrigerant valve control strategy.

[0010] Furthermore, when the heating system is an electric drive system or a battery system, the heating data includes the system target temperature, the actual system temperature at the end of each preset period, the system operating parameters within each preset period, and the heat exchange output of the corresponding heat exchange system; the estimated heat exchange output of the heat exchange system determined based on the heating data includes:

[0011] determining a first adjustment coefficient based on the actual system temperature at the end of the current preset period, the actual system temperature at the end of the previous preset period, and the system target temperature;

[0012] Determining estimated system operating parameters for a next preset period based on system operating parameters for a plurality of consecutive preset periods up to a current preset period;

[0013] Determining a second adjustment coefficient for the next preset period based on the estimated system operating parameters for the next preset period and the system operating parameters for the current preset period;

[0014] Based on the first adjustment coefficient, the second adjustment coefficient, and the heat exchange output of the heat exchange system in the current preset cycle, an estimated heat exchange output in the next preset cycle is determined.

[0015] Furthermore, when the heating system is a passenger cabin system, the heating data includes several environmental parameters of the passenger cabin, passenger position data, and heat exchange output of each preset cycle; the several environmental parameters include cabin humidity, cabin temperature, wind speed and wind direction of each air outlet;

[0016] The estimated heat transfer output of the heat transfer system based on the heat data includes:

[0017] Determine the perceived temperature of each occupant in the passenger compartment based on several environmental parameters and occupant position data;

[0018] determining a target temperature of the passenger cabin within a next preset period based on the perceived temperature of each passenger in the passenger cabin;

[0019] When the difference between the target temperature and the current cabin temperature is within the set temperature difference range, the third adjustment coefficient is determined based on the duration of the preset cycle and the temperature difference; based on the third adjustment coefficient and the heat exchange output of the current preset cycle, the estimated heat exchange output of the next preset cycle is determined.

[0020] When the difference between the target temperature and the current cabin temperature is outside the set temperature difference range; based on the temperature difference, several consecutive adjustment stages and the temperature difference index of each adjustment stage are confirmed; based on the duration and temperature difference index of each adjustment stage, the fourth adjustment coefficient corresponding to each adjustment stage is confirmed; based on the fourth adjustment coefficient of each adjustment stage and the heat exchange output of the current preset cycle, the heat exchange output corresponding to each adjustment stage in the next preset cycle is confirmed.

[0021] Further, based on the plurality of environmental parameters and the occupant position data, determining the perceived temperature of each occupant in the passenger compartment;

[0022] Based on the position data of the occupant, determining the air outlet and the wind image corresponding to the occupant;

[0023] determining the wind-exposed area of ​​the occupant based on the wind direction of the air outlet, the occupant's position data, and the wind-exposed image;

[0024] Determine the occupants' perceived temperature based on the adjustment factor, cabin temperature, humidity, and wind speed at the air outlet.

[0025] Further, based on the perceived temperature of each occupant in the passenger compartment, a target temperature of the passenger compartment within a next preset period is determined;

[0026] Confirm whether the current cabin temperature meets the preset conditions based on each passenger's perceived temperature;

[0027] If not, determine the cabin temperature adjustment range for each occupant based on the adjustment coefficients, humidity, and wind speed at the air outlet for all occupants.

[0028] Determine the target temperature range based on the adjustable cabin temperature range for each occupant;

[0029] Based on the target temperature range and the current cabin temperature, a target temperature is determined.

[0030] Furthermore, the preset conditions include:

[0031] All passengers' perceived temperatures are within the comfortable temperature range;

[0032] Or the number of passengers exceeds the set number, the driver's body temperature among the passengers is within the comfortable temperature range, and the number of passengers whose body temperature is not in the comfortable temperature range is less than the set threshold.

[0033] Furthermore, the refrigerant valve control strategy includes the opening degree, start time and start duration of the refrigerant valve.

[0034] In another aspect, the present invention provides a heat exchange system for implementing a heat exchange method, the system comprising:

[0035] A control module and several heat exchange structures;

[0036] The control module includes a housing, and a plurality of refrigerant inlet channels are provided inside the control module, one end of each of the refrigerant inlet channels is connected to the refrigerant inlet of each of the heat exchange structures in a one-to-one correspondence; the other ends of the plurality of refrigerant inlet channels are connected to each other and form a refrigerant main inlet at the end of the housing; each refrigerant inlet channel is provided with a refrigerant valve to control the refrigerant flow entering the corresponding refrigerant inlet channel;

[0037] A refrigerant outlet channel is provided inside the control module, and the refrigerant outlets of the multiple heat exchange structures are connected to one end of the refrigerant outlet channel, and the other end of the refrigerant outlet channel forms a refrigerant main outlet at the end of the housing of the control module;

[0038] A communication connector is provided on the surface of the control module housing, and the control lines of multiple refrigerant valves are connected to the communication connector, and the communication connector is electrically connected to a controller; each heat exchange structure and the corresponding refrigerant valve form a heat exchange system; the controller controls the opening of the refrigerant valve of each heat exchange system to adjust the heat exchange output.

[0039] Further, the plurality of heat exchange structures include a first heat exchanger and a second heat exchanger;

[0040] The first heat exchanger and the second heat exchanger are packaged to form a heat exchange core and are arranged on one side of the control module. The first heat exchanger is provided with a first coolant inlet and a first coolant inlet on the heat exchange core shell; the second heat exchanger is provided with a second coolant inlet and a second coolant inlet on the heat exchange core shell;

[0041] The refrigerant outlets of the first heat exchanger and the second heat exchanger are connected to each other at the end of the refrigerant outlet channel.

[0042] Furthermore, several heat exchange structures include an evaporator, the refrigerant inlet of the evaporator is connected to a refrigerant inlet channel, the refrigerant outlet of the evaporator is connected to the refrigerant outlet channel, and a one-way valve is provided between the refrigerant outlet of the evaporator and the refrigerant outlet channel.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] In this embodiment, the heating data of each heating system in the current preset cycle is obtained at every preset cycle after the vehicle starts; and the estimated heat exchange output of the next preset cycle is analyzed based on the heating data; the control strategy of each refrigerant valve and the output of the compressor during the next preset cycle can be obtained based on the estimated heat exchange output; it is convenient to control the heat exchange system for heat exchange during the next preset cycle, avoid excessive or insufficient heat exchange of the heat exchange system, and further achieve the effect of energy saving.

[0045] The heat exchange system in the present invention includes a first heat exchanger, a second heat exchanger and an evaporator interface, which is convenient for heat dissipation for multiple heating systems. The heat exchange system includes multiple refrigerant inlet channels, and each refrigerant inlet channel is provided with a refrigerant valve to control the flow of the refrigerant inlet channel and thus control the heat exchange output; in addition, multiple refrigerant inlet channels are connected to the refrigerant inlet, and refrigerant can be provided for the heat exchange system circulation through the same condenser and compressor; it solves the technical problems existing in the prior art that the heat dissipation system only dissipates heat when the temperature of the components rises, and cannot perform targeted heat dissipation on each component according to the operating conditions of each component, and its heat dissipation intensity and the adjustable range of the heat dissipation intensity are limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A diagram of method steps according to an embodiment of the present invention.

[0047] Figure 2 It is a structural diagram of another embodiment of the present invention.

[0048] Figure 3 This is a principle block diagram of a heat exchange system according to another embodiment of the present invention.

[0049] In the figure: 1. First coolant inlet; 2. First coolant outlet; 3. Second coolant inlet; 4. Second coolant outlet; 5. Evaporator inlet; 6. Evaporator outlet; 7. Refrigerant main inlet; 8. Refrigerant main outlet; 9. Communication connector; 10. Mounting bracket. DETAILED DESCRIPTION

[0050] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0051] like Figure 1 As shown, in one aspect, the present invention provides a heat exchange method, the method comprising:

[0052] After the vehicle starts driving, heat data of several heating systems of the vehicle within the current preset period is obtained; the several heating systems include the electric drive system, the battery system, and the passenger compartment system;

[0053] During vehicle driving, the electric drive system and battery system will emit a large amount of heat during operation, and the electric drive system and battery system need to be cooled to prevent long-term high temperature of the electric drive system and battery system from affecting performance and life. In addition, the passenger compartment system needs to be kept within a certain temperature range during vehicle driving to make the riding environment of the passengers in the passenger compartment more comfortable. After the vehicle is started, heating data is obtained according to a preset period. In this embodiment, the preset period includes 1 minute, 2 minutes, 3 minutes, etc. For example, 2 minutes after the vehicle is started, the heating data of each heating system of the vehicle within these 2 minutes is obtained, and then 2 minutes later, the heating data of each heating system of the vehicle within the interval from 2 minutes to 4 minutes after starting is obtained.

[0054] Based on the heating data of each heating system, determining the estimated heat exchange output of the heat exchange system corresponding to each heating system in the next preset period;

[0055] Analyze the heating data of the heating system in the current preset period to estimate the estimated heat exchange output of the heat exchange system in the next preset period. The estimated heat exchange output includes the energy exchanged per unit time. In this embodiment, each heating system corresponds to a heat exchange system for quickly dissipating the heat generated by the heating system.

[0056] Based on the estimated heat exchange output of each heat exchange system, determine the refrigerant valve control strategy of each heat exchange system in the next preset cycle;

[0057] The refrigerant in the heat exchange system plays a cooling role. The refrigerant is introduced into the heat exchange system through the compressor for heat exchange. The refrigerant takes out the heat and is then cooled through the condenser, thereby taking out the heat from the heating system. The opening degree of the refrigerant valve can determine the size of the heat exchange output, which is the heat exchange capacity. The greater the heat exchange output, the greater the heat exchange capacity, and the more energy is exchanged per unit time.

[0058] In the next preset period, each heat exchange system performs heat exchange according to the refrigerant valve control strategy.

[0059] In this embodiment, in the next preset period, it is also necessary to confirm the total output of the compressor in the next preset period based on the estimated heat exchange outputs of the plurality of heat exchange systems.

[0060] In this embodiment, the refrigerants of all heat exchange systems are cooled by a refrigerant refrigeration system; the refrigerant refrigeration system includes a condenser and a compressor; the total refrigerant flow rate can be determined by estimating the output of all heat exchange systems, and the total output of the compressor in the next preset cycle can be determined based on the total refrigerant flow rate.

[0061] The specific implementation process of this embodiment includes:

[0062] When the heating system is an electric drive system or a battery system, the heating data includes the system target temperature, the actual system temperature at the end of each preset cycle, the system operating parameters within each preset cycle, and the heat exchange output of the corresponding heat exchange system. The estimated heat exchange output of the heat exchange system determined based on the heating data includes:

[0063] determining a first adjustment coefficient based on the actual system temperature at the end of the current preset period, the actual system temperature at the end of the previous preset period, and the system target temperature;

[0064] In this embodiment, the system target temperature for each preset cycle is the same value; the actual system temperature at the end of the current preset cycle and the actual system temperature at the end of the previous preset cycle are used to determine whether the heat exchange output corresponding to the heat exchange system in the current preset cycle meets the heat exchange requirements;

[0065] For example, if the actual system temperature is higher than the system target temperature, it means that the heat exchange output in the current preset period is lower than the heat exchange requirement; at the same time, if the actual system temperature at the end of the current preset period is higher than the actual system temperature at the end of the previous preset period, it means that the heat contained in the heating system in the current preset period is increasing; if the actual system temperature at the end of the current preset period is lower than the actual system temperature at the end of the previous preset period, it means that the heat contained in the heating system in the current preset period is decreasing; if the actual system temperature at the end of the current preset period is equal to the actual system temperature at the end of the previous preset period, it means that the heat contained in the heating system in the current preset period has neither increased nor decreased compared with the previous preset period.

[0066] When the current actual system temperature is lower than the system target temperature, it means that the heat exchange output in the current preset period is higher than the heat exchange requirement; when the actual system temperature at the end of the current preset period is lower than the actual system temperature at the end of the previous preset period, it means that the heat contained in the heating system in the current preset period is on a downward trend; when the actual system temperature at the end of the current preset period is higher than the actual system temperature at the end of the previous preset period, it means that the heat contained in the heating system in the current preset period is on an increasing trend; if the actual system temperature at the end of the current preset period is equal to the actual system temperature at the end of the previous preset period, it means that the heat contained in the heating system in the current preset period has neither increased nor decreased compared with the previous preset period.

[0067] The first adjustment coefficient is obtained by the following formula:

[0068]

[0069] Where DYTJ is the first adjustment coefficient; DSW is the actual system temperature at the end of the current preset cycle; SSW is the actual system temperature at the end of the previous preset cycle; MBW is the system target temperature; α is a fixed coefficient and is greater than 0.

[0070] Determining estimated system operating parameters for a next preset period based on system operating parameters for a plurality of consecutive preset periods up to a current preset period;

[0071] During vehicle operation, the system operating parameters within each preset cycle do not remain constant. When the system operating parameters change, the heat generated by the heating system within each preset cycle will change. The system operating parameters have at least one data item, and the changing pattern of the system operating parameters can be confirmed based on the system operating parameters of several consecutive preset cycles.

[0072] Determining a second adjustment coefficient for the next preset period based on the estimated system operating parameters for the next preset period and the system operating parameters for the current preset period;

[0073] The second adjustment coefficient is obtained by the following formula:

[0074] ;

[0075] Wherein DRTJ is the second adjustment coefficient; YC is the operating parameter; N is the number of preset cycles, and N is an integer greater than 1; n is the nth preset cycle; β is a fixed coefficient and is greater than 0.

[0076] It should be noted that N in the above formula is the number of consecutive preset cycles including the current preset cycle up to the current preset cycle, and within the first several preset cycles when the vehicle starts running, the second adjustment coefficient is a fixed value.

[0077] Based on the first adjustment coefficient, the second adjustment coefficient, and the heat exchange output of the heat exchange system in the current preset cycle, an estimated heat exchange output in the next preset cycle is determined.

[0078] The estimated heat transfer output is obtained using the following formula:

[0079] ;

[0080] Where YGCL is the estimated heat exchange output, DQCL is the current heat exchange output; DYTJ is the first adjustment coefficient; DRTJ is the second adjustment coefficient.

[0081] It should be noted that the heat exchange output in this embodiment includes the average output of the heat exchange system over a period of time; in some embodiments, it may be the flow rate of the refrigerant; the greater the flow rate of the refrigerant, the greater the heat exchange output.

[0082] In this embodiment, when the heating system is a passenger cabin system, the heating data includes several passenger cabin environmental parameters, passenger position data, and heat exchange output for each preset cycle; the several environmental parameters include cabin humidity, cabin temperature, wind speed and wind direction at each air outlet;

[0083] The estimated heat transfer output of the heat transfer system based on the heat data includes:

[0084] Determine the perceived temperature of each occupant in the passenger compartment based on several environmental parameters and occupant position data; including:

[0085] Based on the position data of the occupant, determining the air outlet and the wind image corresponding to the occupant;

[0086] determining the wind-exposed area of ​​the occupant based on the wind direction of the air outlet, the occupant's position data, and the wind-exposed image;

[0087] In this embodiment, the wind-affected image is collected by a miniature camera that is arranged at the air outlet and perpendicular to the air outlet. The wind outlet range in the passenger compartment is determined according to the current wind direction of the air outlet, and the wind-affected part of the wind-affected image within the wind outlet range is obtained. The area of ​​the wind-affected part in the wind-affected image and the distance between the wind-affected part of the passenger and the air outlet in the position data are obtained. According to the distance, the area of ​​the wind-affected part is converted into the area of ​​the wind-affected part at the standard distance, and is used as the wind-affected area.

[0088] The occupants' perceived temperature is determined based on the wind-exposed area, cabin temperature, humidity, and wind speed at the air outlet.

[0089] When each passenger is sitting in the passenger compartment, the perceived temperature is related to the wind speed and direction of the air outlet near their seat.

[0090] Different occupants in the same passenger compartment will experience different levels of riding comfort due to their different seating positions; the occupants' comfort level is assessed by obtaining their perceived body temperature.

[0091] The body temperature of each passenger is obtained using the following formula:

[0092] ;

[0093] ;

[0094] TGWD is the perceived temperature in degrees Celsius; T is the cabin temperature in degrees Celsius; RH is the cabin humidity; V is the ambient wind speed in m / sec; V 出口 is the wind speed at the air outlet; SS is the actual wind-exposed area; BS is the standard wind-exposed area; SL is the actual distance from the air outlet; BL is the standard distance from the air outlet.

[0095] Determining a target temperature of the passenger cabin for a next preset period based on the perceived temperature of each passenger in the passenger cabin; including:

[0096] Confirm whether the current cabin temperature meets the preset conditions based on each passenger's perceived temperature;

[0097] If not, determine the cabin temperature adjustment range for each occupant based on the adjustment coefficients, humidity, and wind speed at the air outlet for all occupants. During the temperature adjustment process, each occupant has a corresponding cabin temperature adjustment range for the corresponding comfort temperature range.

[0098] Determining a target temperature range based on the adjustable cabin temperature range corresponding to each occupant; the adjustable cabin temperature ranges corresponding to each occupant intersect, and the intersection is the target temperature range to be achieved within the next preset period, and the target temperature range includes at least one temperature value;

[0099] Based on the target temperature range and the current cabin temperature, a target temperature is determined; and a temperature value in the target temperature range that is closest to the current cabin temperature is selected as the target temperature.

[0100] When the difference between the target temperature and the current cabin temperature is within the set temperature difference range, the third adjustment coefficient is determined based on the preset cycle duration and temperature difference. A difference between the target temperature and the current cabin temperature within the set temperature difference range indicates that the heat exchange system requires minimal adjustment, meaning that adjustment can be completed within the preset cycle. This prevents frost formation on related equipment due to overly rapid temperature adjustments, and also prevents discomfort to cabin occupants caused by overly rapid temperature adjustments.

[0101] In this embodiment, a third adjustment coefficient table is pre-set, and the third adjustment coefficient is obtained according to the duration of the preset cycle and the temperature difference. Based on the third adjustment coefficient and the heat exchange output of the current preset cycle, the estimated heat exchange output of the next preset cycle is determined, including obtaining the estimated heat exchange output by the following formula:

[0102] ;

[0103] Where YGCL is the estimated heat exchange output, DQCL is the current heat exchange output; DSTJ is the third adjustment coefficient.

[0104] When the difference between the target temperature and the current cabin temperature is outside the set temperature difference range; based on the temperature difference, several consecutive adjustment stages and the temperature difference index of each adjustment stage are confirmed; based on the duration and temperature difference index of each adjustment stage, the fourth adjustment coefficient corresponding to each adjustment stage is confirmed; based on the fourth adjustment coefficient of each adjustment stage and the heat exchange output of the current preset cycle, the heat exchange output corresponding to each adjustment stage in the next preset cycle is confirmed.

[0105] When the difference between the target temperature and the current cabin temperature is outside the set temperature difference range, it means that the target temperature differs significantly from the current cabin temperature. The heat exchange system needs to adjust significantly, and the cabin temperature needs to be adjusted to the target temperature quickly. Otherwise, at the end of the preset cycle, the cabin temperature has not yet reached the target temperature, and the occupants will continue to be under unsatisfactory preset conditions for a long time. The number of adjustment stages is determined based on the temperature difference. The larger the temperature difference, the more adjustment stages are required. In this embodiment, the duration of each adjustment stage is the same. In this embodiment, a fourth adjustment coefficient table is pre-set. The fourth adjustment coefficient corresponding to each adjustment stage is obtained based on the duration of each adjustment stage and the temperature difference index. The heat exchange output of each adjustment stage in the next preset cycle is then obtained using the following formula:

[0106] ;

[0107] Where YGCL is the estimated heat exchange output, DQCL is the current heat exchange output; DFTJ is the fourth regulation coefficient of the i-th regulation stage.

[0108] In another embodiment of the present invention, the preset conditions include:

[0109] All passengers' perceived temperatures are within the comfortable temperature range;

[0110] Or the number of passengers exceeds the set number, the driver's body temperature among the passengers is within the comfortable temperature range, and the number of passengers whose body temperature is not in the comfortable temperature range is less than the set threshold.

[0111] The specific implementation process of this embodiment includes:

[0112] In this embodiment, the preset conditions include two situations. One is that the perceived temperature of all passengers is within the comfortable temperature range. No matter how many passengers are in the passenger compartment, as long as the perceived temperature of all passengers is within the comfortable temperature range, the preset conditions are met; the other is that the number of passengers exceeds the set number, the perceived temperature of the driver among the passengers is within the comfortable temperature range, and the number of passengers whose perceived temperature is not within the comfortable temperature range is less than the set threshold. When the number of passengers in the passenger compartment is greater than the set number, the probability of satisfying the condition that the perceived temperature of all passengers is within the comfortable temperature range at the same time is relatively low; the set number in this embodiment includes the vehicle's maximum carrying capacity minus one; since the driver needs to maintain a relatively comfortable state during driving, the perceived temperature of the driver in the preset conditions needs to be within the comfortable temperature range; the number of other people in the passenger compartment who are not within the comfort temperature range can be less than the set threshold; the threshold is set to one in this embodiment.

[0113] Based on the refrigerant valve control strategy, including: refrigerant valve opening, start time and start duration.

[0114] In this embodiment, the heating data of each heating system in the current preset cycle is obtained at every preset cycle after the vehicle starts; and the estimated heat exchange output of the next preset cycle is analyzed based on the heating data; the control strategy of each refrigerant valve and the output of the compressor during the next preset cycle can be obtained based on the estimated heat exchange output; it is convenient to control the heat exchange system for heat exchange during the next preset cycle, avoid excessive or insufficient heat exchange of the heat exchange system, and further achieve the effect of energy saving.

[0115] like Figure 2-3 As shown, another embodiment of the present invention is a heat exchange system for implementing the above-mentioned heat exchange method, the system comprising:

[0116] A control module and several heat exchange structures;

[0117] The control module includes a housing, and a plurality of refrigerant inlet channels are provided inside the control module. One end of each of the refrigerant inlet channels is connected to the refrigerant inlet of each of the heat exchange structures in a one-to-one correspondence; the other ends of the plurality of refrigerant inlet channels are connected to each other and form a refrigerant main inlet 7 at the end of the housing; each refrigerant inlet channel is provided with a refrigerant valve to control the refrigerant flow entering the corresponding refrigerant inlet channel;

[0118] A refrigerant outlet channel is provided inside the control module, and the refrigerant outlets of the multiple heat exchange structures are connected to one end of the refrigerant outlet channel, and the other end of the refrigerant outlet channel forms a refrigerant main outlet 8 at the end of the housing of the control module;

[0119] A communication connector 9 is mounted on the control module housing. Control lines for multiple refrigerant valves are connected to this connector, which is electrically connected to a controller. Each heat exchange structure forms a heat exchange system with a corresponding refrigerant valve. The controller controls the opening of each refrigerant valve in each heat exchange system to adjust the heat exchange output. In this embodiment, the refrigerant valve comprises a valve body, a valve channel, a coil, an actuator chip, and a return spring. The valve body is movable within the valve channel, and the return spring is positioned at the end of the valve channel. The return spring and the coil cooperate to move and fix the valve body along the channel, thereby controlling the valve opening. The actuator chip is used to execute the PWM wave signal corresponding to the control signal. The actuator chip applies current to the control valve coil based on the duty cycle of the PWM wave, generating an electromagnetic force in the coil that drives the valve body and cooperates with the return spring to control the valve opening. In this embodiment, the valve opening range is [0-100%].

[0120] The specific implementation process of this embodiment includes:

[0121] In this embodiment, the heat exchange structures include two heat exchangers and an evaporator. The two heat exchangers are respectively a first heat exchanger and a second heat exchanger. The first heat exchanger and the second heat exchanger are packaged to form a heat exchange core and are arranged on one side of the control module. The first heat exchanger is provided with a first coolant inlet 1 and a first coolant outlet 2 on the heat exchange core shell. The second heat exchanger is provided with a second coolant inlet 3 and a second coolant outlet 4 on the heat exchange core shell.

[0122] The refrigerant outlets of the first heat exchanger and the second heat exchanger are connected to each other at the end of the refrigerant outlet channel.

[0123] The control module is provided with an evaporator inlet 5 and an evaporator outlet 6. The evaporator outlet 6 is connected to the refrigerant inlet channel, and the evaporator inlet 5 is connected to the refrigerant outlet channel. The refrigerant inlet of the evaporator is connected to a refrigerant inlet channel through the evaporator outlet 6, and the refrigerant outlet of the evaporator is connected to the refrigerant outlet channel through the evaporator inlet 5, and a one-way valve is provided between the evaporator refrigerant outlet and the evaporator inlet 5.

[0124] In this embodiment, the heat exchange core shell is fixed to the shell of the control module, and mounting brackets 10 are provided on both sides of the bottom of the heat exchange core shell to facilitate installation and fixing.

[0125] In this embodiment, the heat exchange core shell is fixed to the shell of the control module, and mounting brackets are provided on both sides of the bottom of the heat exchange core shell to facilitate installation and fixing.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A heat exchange method, characterized in that: The method comprises: After the vehicle starts driving, heat data of multiple heating systems of the vehicle within the current preset period is obtained; the multiple heating systems include the electric drive system, the battery system, and the passenger compartment system; Based on the heating data of each heating system, determining the estimated heat exchange output of the heat exchange system corresponding to each heating system in the next preset period; Based on the estimated heat exchange output of each heat exchange system, determine the refrigerant valve control strategy of each heat exchange system in the next preset cycle; In the next preset period, each heat exchange system performs heat exchange according to the refrigerant valve control strategy; When the heating system is an electric drive system or a battery system, the heating data includes the system target temperature, the actual system temperature at the end of each preset cycle, the system operating parameters within each preset cycle, and the heat exchange output of the corresponding heat exchange system. The estimated heat exchange output of the heat exchange system determined based on the heating data includes: determining a first adjustment coefficient based on the actual system temperature at the end of the current preset period, the actual system temperature at the end of the previous preset period, and the system target temperature; Determining estimated system operating parameters for a next preset period based on system operating parameters for a plurality of consecutive preset periods up to a current preset period; Determining a second adjustment coefficient for the next preset period based on the estimated system operating parameters for the next preset period and the system operating parameters for the current preset period; Determining an estimated heat exchange output for a next preset period based on the first adjustment coefficient, the second adjustment coefficient, and the heat exchange output of the heat exchange system in the current preset period; When the heating system is a passenger cabin system, the heating data includes several passenger cabin environmental parameters, passenger position data, and heat exchange output for each preset cycle; the several environmental parameters include cabin humidity, cabin temperature, wind speed and wind direction at each air outlet; The estimated heat transfer output of the heat transfer system based on the heat data includes: Determine the perceived temperature of each occupant in the passenger compartment based on several environmental parameters and occupant position data; determining a target temperature of the passenger cabin within a next preset period based on the perceived temperature of each passenger in the passenger cabin; When the difference between the target temperature and the current cabin temperature is within the set temperature difference range, a third adjustment coefficient is determined based on the duration of the preset cycle and the temperature difference; and an estimated heat exchange output for the next preset cycle is determined based on the third adjustment coefficient and the heat exchange output of the current preset cycle. When the difference between the target temperature and the current cabin temperature is outside the set temperature difference range; based on the temperature difference, several consecutive adjustment stages and the temperature difference index of each adjustment stage are confirmed; based on the duration and temperature difference index of each adjustment stage, the fourth adjustment coefficient corresponding to each adjustment stage is confirmed; based on the fourth adjustment coefficient of each adjustment stage and the heat exchange output of the current preset cycle, the heat exchange output corresponding to each adjustment stage in the next preset cycle is confirmed.

2. A heat exchange method according to claim 1, characterized in that: Determine the perceived temperature of each occupant in the passenger compartment based on several environmental parameters and occupant position data; Based on the position data of the occupant, determining the air outlet and the wind image corresponding to the occupant; determining the wind-exposed area of ​​the occupant based on the wind direction of the air outlet, the occupant's position data, and the wind-exposed image; Determine the occupants' perceived temperature based on the adjustment factor, cabin temperature, humidity, and wind speed at the air outlet.

3. A heat exchange method according to claim 2, characterized in that: determining a target temperature of the passenger cabin within a next preset period based on the perceived temperature of each passenger in the passenger cabin; Confirm whether the current cabin temperature meets the preset conditions based on each passenger's perceived temperature; If not, determine the cabin temperature adjustment range for each occupant based on the adjustment coefficients, humidity, and wind speed at the air outlet for all occupants. Determine the target temperature range based on the adjustable cabin temperature range for each occupant; Based on the target temperature range and the current cabin temperature, a target temperature is determined.

4. A heat exchange method according to claim 3, characterized in that: The preset conditions include: All passengers' perceived temperatures are within the comfortable temperature range; Or the number of passengers exceeds the set number, the driver's body temperature among the passengers is within the comfortable temperature range, and the number of passengers whose body temperature is not in the comfortable temperature range is less than the set threshold.

5. A heat exchange method according to claim 1, characterized in that: The refrigerant valve control strategy includes the opening degree, start time and start duration of the refrigerant valve.

6. A heat exchange system, characterized in that: For implementing a heat exchange method according to any one of claims 1 to 5, the system comprises: A control module and several heat exchange structures; The control module includes a housing, and a plurality of refrigerant inlet channels are provided inside the control module, one end of each of the refrigerant inlet channels is connected to the refrigerant inlet of each of the heat exchange structures in a one-to-one correspondence; the other ends of the plurality of refrigerant inlet channels are connected to each other and form a refrigerant main inlet at the end of the housing; each refrigerant inlet channel is provided with a refrigerant valve to control the refrigerant flow entering the corresponding refrigerant inlet channel; A refrigerant outlet channel is provided inside the control module, and the refrigerant outlets of the multiple heat exchange structures are connected to one end of the refrigerant outlet channel, and the other end of the refrigerant outlet channel forms a refrigerant main outlet at the end of the housing of the control module; A communication connector is provided on the surface of the control module housing, and the control lines of multiple refrigerant valves are connected to the communication connector, and the communication connector is electrically connected to a controller; each heat exchange structure and the corresponding refrigerant valve form a heat exchange system; the controller controls the opening of the refrigerant valve of each heat exchange system to adjust the heat exchange output.

7. A heat exchange system according to claim 6, characterized in that: The plurality of heat exchange structures include a first heat exchanger and a second heat exchanger; The first heat exchanger and the second heat exchanger are packaged to form a heat exchange core and are arranged on one side of the control module. The first heat exchanger is provided with a first coolant inlet and a first coolant outlet on the heat exchange core shell; The second heat exchanger is provided with a second coolant inlet and a second coolant outlet on the outer shell of the heat exchange core; The refrigerant outlets of the first heat exchanger and the second heat exchanger are connected to each other at the end of the refrigerant outlet channel.

8. A heat exchange system according to claim 7, characterized in that: The heat exchange structures include an evaporator, a refrigerant inlet of the evaporator is connected to a refrigerant inlet channel, a refrigerant outlet of the evaporator is connected to a refrigerant outlet channel, and a one-way valve is provided between the refrigerant outlet of the evaporator and the refrigerant outlet channel.

Images