Detection system and detection method of heating device, heating device and vehicle

Abstract

The invention discloses a detection system and detection method of a heating device, the heating device and a vehicle, and relates to the technical field of vehicle equipment detection. The detection system comprises a heat exchange device, a constant temperature device, at least two stations and a detection assembly, the constant temperature device is connected with the first heat exchange channel to form a first circulation loop, and the constant temperature device is used for heating or cooling a first medium and conveying the heated or cooled first medium to the heat exchange device through the first circulation loop; the at least two stations are respectively connected with the second heat exchange channel to form a second circulation loop for a second medium to flow, and a heating device to be tested is arranged in each station and is used for heating the second medium; the detection assembly is used for at least detecting the temperature value and the flow value of the second medium. According to the invention, a plurality of to-be-detected heating devices can be continuously detected only by replacing the to-be-detected heating devices in the stations, so that the heating devices meeting the requirements are rapidly screened out, and the detection efficiency of the to-be-detected heating devices is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle equipment detection, and in particular to a detection system and method for a heating device, a heating device and a vehicle. Background Art

[0002] In the related art, the heating efficiency of the heater will directly affect the efficiency of the vehicle air conditioning system. Therefore, in order to ensure that the heater can meet the performance requirements, it is particularly important to conduct a comprehensive performance test on each candidate heater. The traditional testing method relies on bench testing the candidate heaters one by one, and collecting a large amount of data to evaluate the advantages and disadvantages of each candidate heater. However, the test cycle of the bench test is usually relatively long, which not only leads to low efficiency of heater performance testing, but also increases the testing cost. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a detection system for a heating device, which can shorten the detection cycle of the heating device to be tested, thereby improving the detection efficiency of the heating device to be tested.

[0004] The invention also provides a detection method of a heating device, a heating device and a vehicle.

[0005] According to a first aspect of an embodiment of the present invention, a detection system for a heating device comprises: a heat exchange device, a thermostat, at least two workstations and a detection component, wherein the heat exchange device has a first heat exchange channel and a second heat exchange channel; the thermostat is loaded with a first medium, the thermostat is connected to the first heat exchange channel to construct a first circulation loop, the thermostat is used to heat or cool the first medium, and transports the heated or cooled first medium to the heat exchange device through the first circulation loop; at least two of the workstations are respectively connected to the second heat exchange channel to construct a second circulation loop for the flow of a second medium, the second medium exchanges heat with the first medium under the action of the heat exchange device, and a heating device to be tested is respectively installed in each of the workstations, and the heating device to be tested is configured to heat the second medium; the detection component is respectively connected to at least two of the workstations, and is configured to at least detect a temperature value and a flow value of the second medium.

[0006] The detection system of the heating device according to the embodiment of the present invention has at least the following beneficial effects: The thermostatic device of the embodiment of the present invention heats or cools the first medium loaded therein to a preset temperature, and then transports the heated or cooled first medium to the heat exchange device through the first circulation loop, thereby exchanging heat with the second medium in the second circulation loop, so that the second medium reaches the required temperature; then the heating device to be tested in the workstation heats the second medium after heat exchange, and detects the temperature value and flow value of the second medium through the detection component connected to the workstation, thereby realizing the evaluation of the performance level of the heating device to be tested. Compared with performing bench tests on the heating devices to be tested one by one, this embodiment only needs to replace the heating device to be tested in the workstation to continuously perform performance tests on multiple heating devices to be tested, thereby quickly screening out heating devices that meet the requirements, which not only improves the detection efficiency of the heating device to be tested, shortens the detection cycle, but also reduces the detection cost. According to some embodiments of the present invention, a first circulation pump and a valve body assembly are provided in the first circulation loop, the first circulation pump is used to drive the first medium to circulate in the first circulation loop, and the valve body assembly is used to control the on-off of the first circulation loop. According to some embodiments of the present invention, the detection system further comprises a circulation bypass, which is connected in parallel with the first circulation pump and the valve body assembly, and a throttle valve is provided in the circulation bypass, and the throttle valve is configured to be able to adjust the opening to control the flow rate and flow velocity of the first medium.

[0007] According to some embodiments of the present invention, the detection system further includes a temperature control device, which is respectively connected to at least two of the workstations, and is used to control the ambient temperature of the workstations to adjust the working conditions of the heating device to be tested.

[0008] According to some embodiments of the present invention, an alarm device is provided in the thermostatic device, and the alarm device is configured to issue an alarm message according to the liquid volume of the first medium in the thermostatic device.

[0009] According to some embodiments of the present invention, a filtering device is provided in the first circulation loop, the filtering device is provided between the heat exchange device and the constant temperature device, and the filtering device is used to filter the first medium flowing from the constant temperature device to the heat exchange device.

[0010] The detection method of the heating device according to the second aspect of the present invention is applied to the detection system of the heating device according to the first aspect of the present invention, and the detection method includes: Controlling the thermostat to maintain the first medium at a preset first temperature value; controlling the heat exchange device to allow the second medium to exchange heat with the first medium, so as to heat or cool the second medium; Controlling the heating device to be tested to heat the second medium, and detecting a second temperature value and flow data of the second medium after heating; The heat exchange efficiency of the heating device to be tested is determined according to the first temperature value, the second temperature value and the flow data.

[0011] The detection method of the heating device according to the embodiment of the present invention has at least the following beneficial effects: The embodiment of the present invention controls a thermostatic device to maintain a first medium at a preset first temperature value, and then transports the first medium whose temperature is maintained at the first temperature value to a heat exchange device through a first circulation loop, and exchanges heat with the first medium through the heat exchange device, so that the second medium reaches a required temperature; then controls a heating device to be tested in a workstation to heat the second medium after heat exchange, and detects a second temperature value and flow data of the second medium through a detection component connected to the workstation; determines the heat exchange efficiency of the heating device to be tested based on the first temperature value, the second temperature value and the flow data, thereby realizing an evaluation of the performance level of the heating device to be tested, and then quickly screening out heating devices that meet the requirements, which not only improves the detection efficiency of the heating device to be tested, shortens the detection cycle, but also reduces the detection cost.

[0012] According to some embodiments of the present invention, the heating device is applied to a vehicle air conditioning system, and the detection method further includes: Obtaining the expected power of the heating device to be tested; Calculating a ratio of the heat exchange efficiency to the expected power, and a difference between the heat exchange efficiency and the expected power; When the ratio is greater than or equal to a preset first threshold, and the difference is less than or equal to a preset second threshold, it is determined that the heating device meets the performance requirements of the vehicle air-conditioning system.

[0013] According to the third aspect of the present invention, the heating device is applied to a vehicle air-conditioning system, which includes a heater core. The heating device is configured to provide a heat source to the heater core. The heating device is detected by the detection system of the heating device described in the first aspect of the present invention.

[0014] The heating device according to the embodiment of the present invention has at least the following beneficial effects: The heating device is detected using the detection system of the heating device of the first embodiment. The heating device efficiently screened by the detection system better matches the performance requirements of the vehicle air-conditioning system, which not only helps to shorten the production cycle of the vehicle air-conditioning system, but also can reduce the failure rate of the heating device, thereby extending the service life of the vehicle air-conditioning system and reducing the maintenance cost of the vehicle air-conditioning system.

[0015] A vehicle according to an embodiment of the fourth aspect of the present invention comprises the heating device as described in the embodiment of the third aspect.

[0016] The vehicle according to the embodiment of the present invention has at least the following beneficial effects: The vehicle adopts the heating device of the third aspect embodiment. The heating device that better matches the performance requirements of the vehicle air-conditioning system can not only improve the operating efficiency of the vehicle air-conditioning system and improve the performance of the vehicle air-conditioning system, but also improve the durability of the vehicle air-conditioning system, providing passengers with a better riding experience.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 A schematic diagram of the structure of a detection system for a heating device according to an embodiment of the present invention; Figure 2 A schematic diagram of a detection system of a heating device in operation according to an embodiment of the present invention; Figure 3 A flowchart of a method for detecting a heating device according to an embodiment of the present invention; Figure 4 A schematic diagram of a detection result of a detection method for a heating device according to an embodiment of the present invention; Figure 5 The figure is a flow chart of the steps of a detection method for a heating device according to another embodiment of the present invention.

[0019] Figure Number: Heat exchange device 100; Constant temperature device 200; first circulation loop 210; filtering device 211; circulation bypass 220; throttle valve 221; alarm device 230; Workstation 300; second circulation loop 310; input end 320; output end 330; A heating device to be tested 400; A first temperature sensor 500; a second temperature sensor 510; a third temperature sensor 520; a flow detection device 530; a pressure sensor 540; A first circulating pump 600; a second circulating pump 610; A first valve body 700; a second valve body 710; a third valve body 720; Media box 800. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] It is understandable that the performance of the heating device, as an important part of the vehicle air-conditioning system, directly affects the temperature control effect in the vehicle and the comfort experience of the passengers. Therefore, among the many specifications and types of heating devices, it is critical to accurately select the heating device that best meets the performance requirements of the vehicle air-conditioning system. The traditional heating device testing method relies on bench testing, that is, by installing the heating device on a specific test bench, simulating actual working conditions for testing, and collecting a large amount of data to evaluate the advantages and disadvantages of each candidate heater.

[0025] However, since each candidate heating device needs to be independently installed, debugged and tested, the entire testing process takes a long time, which prolongs the cycle of the heating device selection process and hinders the improvement of the overall production efficiency of the vehicle air conditioning system. In addition, the bench test process consumes a lot of electricity, fuel and other resources, resulting in high testing costs.

[0026] To this end, some embodiments of the present invention provide a detection system for a heating device, wherein the heating device may be an electric heater (Positive Temperature Coefficient, PTC), a heat pump system, or other types of heaters, which are not limited in this embodiment. For details, refer to Figure 1 to Figure 2The detection system of the heating device is illustrated in the figure.

[0027] Reference Figure 1 As shown, in the embodiment of the present invention, the detection system of the heating device includes a heat exchange device 100, a constant temperature device 200, at least two workstations 300 and a detection component (not shown in the figure), wherein, in the present embodiment, the heat exchange device 100 may be a plate heat exchanger, and it is understandable that the plate heat exchanger has a high heat transfer efficiency, a compact structure, strong adaptability, low cost, long service life, etc. In the present embodiment, the plate heat exchanger has a high heat conduction efficiency in the working state, can provide efficient heating and cooling effects at relatively low energy consumption, and is easy to maintain in later use.

[0028] Specifically, in an embodiment of the present invention, the heat exchange device 100 is provided with a first heat exchange channel (not shown in the figure) and a second heat exchange channel (not shown in the figure). The medium in the first heat exchange channel and the medium in the second heat exchange channel can perform heat exchange with a high heat conversion rate under the action of the heat exchange device 100, so that the temperature of the medium in the first heat exchange channel and the temperature of the medium in the second heat exchange channel are similar.

[0029] In the embodiment of the present invention, the thermostat device 200 may be a thermostat box, which can heat or cool the medium loaded therein and maintain the medium at a certain temperature value. Figure 1 As shown, in this embodiment, the constant temperature device 200 is connected to the medium box 800, the medium box 800 stores the first medium, and the constant temperature device 200 is provided with a constant temperature tank for loading the first medium. Figure 2 As shown, when the detection system is running, the medium box 800 can transport the first medium to the constant temperature bath, and the constant temperature device 200 then heats or cools the first medium in the constant temperature bath to keep the first medium at a preset temperature value.

[0030] In the embodiment of the present invention, a third temperature sensor 520 is provided between the thermostat 200 and the heat exchange device 100, and the third temperature sensor 520 can detect the temperature of the first medium in the thermostat. When the third temperature sensor 520 detects that the temperature of the first medium reaches a preset temperature value, the thermostat 200 transports the first medium to the heat exchange device 100.

[0031] Reference Figure 1 As shown, in the embodiment of the present invention, the thermostat 200 is connected to the first heat exchange channel to form a first circulation loop 210 with the heat exchange device 100. Figure 2 As shown, in this embodiment, when the detection system is running, the heated or cooled first medium can flow into the first heat exchange channel through the first circulation loop 210 to exchange heat with the medium in the second heat exchange channel.

[0032] In the embodiment of the present invention, at least two workstations 300 are provided in the detection system of the heating device. Specifically, the workstations 300 may be provided with two, three, four, etc., which is not limited in the present embodiment. For the convenience of description, the following description is based on the example of two workstations 300. Figure 1 As shown, in this embodiment, the two workstations 300 are respectively connected to the second heat exchange channel to form a second circulation loop 310 with the heat exchange device 100, and the second circulation loop 310 is used for the second medium to flow. Figure 2 As shown, when the detection system is running, the second medium in the second circulation loop 310 flows into the second heat exchange channel, and the second medium exchanges heat with the first medium under the action of the heat exchange device 100, based on which the second medium is kept at a temperature close to that of the first medium. In one example, the first medium is refrigeration oil and the second medium is ethylene glycol solution.

[0033] Reference Figure 2 As shown, in an embodiment of the present invention, a heating device to be tested can be installed in the workstation 300, and the heating device to be tested can heat the second medium in the second circulation loop 310. Specifically, the workstation 300 is provided with an input end 320 for the second medium to flow in and an output end 330 for the second medium to flow out. In this embodiment, the second medium that has undergone heat exchange by the heat exchange device 100 flows into the workstation 300 from the input end 320, and the heating device to be tested heats it. It should be noted that the heating device to be tested operates under the conditions of a preset set power setting or a preset voltage value and current value.

[0034] In the embodiment of the present invention, the detection component is connected to at least two workstations 300 respectively, and can detect at least the temperature value and flow value of the second medium. In one example, the detection component can detect the temperature value, flow value and hydraulic pressure of the second medium in the workstation 300; in one example, the detection component can detect the temperature value, flow value of the second medium in the workstation 300 and the voltage value and current value of the heating device to be tested.

[0035] Reference Figure 1As shown, in the embodiment of the present invention, the detection component includes a first temperature sensor 500, a second temperature sensor 510, a flow detection device 530 and a pressure sensor 540. The first temperature sensor 500 and the flow detection device 530 are arranged at the input end 320 of the workstation 300, the first temperature sensor 500 is used to detect the initial temperature value of the second medium after heat exchange by the heat exchange device 100, and the flow detection device 530 is used to detect the flow value of the second medium entering the workstation 300 through the input end 320. The second temperature sensor 510 is arranged at the output end 330 of the workstation 300, and the second temperature sensor 510 is used to detect the current temperature value of the second medium after being heated by the heating device to be tested. The pressure sensor 540 is connected to the workstation 300, and is used to detect the hydraulic pressure difference of the second medium before and after being heated by the heating device to be tested, so as to monitor whether the pressure of the second medium in the second circulation loop 310 is within the allowable range, thereby ensuring the safety of the detection process.

[0036] In the embodiment of the present invention, the performance level of the heating device to be tested can be evaluated by detecting the initial temperature value, flow value, current temperature value, actual power of the heating device to be tested and other data detected by the detection component. After completing the detection of a heating device to be tested, the tested heating device in the station 300 can be replaced with a heating device to be tested of another specification or type for testing. Specifically, refer to Figure 1 As shown, in this embodiment, the input end 320 and the output end 330 of the station 300 are respectively provided with a third valve body 720. Based on this, when replacing the heating device to be tested, the third valve body 720 can be closed to prevent the second medium from leaking.

[0037] This embodiment can screen out a heating device that is more suitable for the performance requirements of the vehicle air-conditioning system by comparing the performance level evaluations of heating devices to be tested of different specifications or types. Compared with performing bench tests on the heating devices to be tested one by one, this embodiment only needs to replace the heating device to be tested in the workstation 300 to continuously perform performance tests on multiple heating devices to be tested, thereby quickly screening out heating devices that meet the requirements. This not only improves the detection efficiency of the heating devices to be tested, shortens the detection cycle, but also reduces the detection cost.

[0038] In the embodiment of the present invention, a first circulation pump 600 and a valve assembly are provided in the first circulation loop 210, wherein the first circulation pump 600 is used to drive the first medium to circulate in the first circulation loop 210, and the valve assembly is used to control the on-off of the first circulation loop 210. A second circulation pump 610 is provided in the second circulation loop 310, and the second circulation pump 610 is used to drive the second medium to circulate in the second circulation loop 310. Specifically, refer to Figure 1As shown, the first circulation pump 600 is arranged between the constant temperature device 200 and the heat exchange device 100, and the valve body assembly includes a ball valve and a butterfly valve, which are arranged in the first circulation loop 210 in sequence to play a double protection role. Even if one of the valves fails, the other valve can still control the on and off of the first circulation loop 210.

[0039] Reference Figure 1 As shown, in the embodiment of the present invention, the detection system further includes a circulation bypass 220. Specifically, the circulation bypass 220 is connected in parallel with the first circulation pump 600, the ball valve and the butterfly valve to the first circulation loop 210. A throttle valve 221 is provided in the circulation bypass 220. In this embodiment, the flow rate and flow velocity of the first medium can be controlled by adjusting the opening of the throttle valve 221.

[0040] It is understandable that during the operation of the detection system, the flow rate of the first medium can be fine-tuned by adjusting the opening of the throttle valve 221. The fine-tuning of the flow rate of the first medium can make the first medium be tested more quickly after being heated or cooled to the required temperature in the constant temperature device 200, which not only improves the test efficiency, but also enhances the stability and reliability of the test process. In addition, by fine-tuning the flow rate of the first medium, the inlet and outlet flows of the first heat exchange channel of the heat exchange device 100 can be adjusted, reducing the problems of overheating, excessive pressure, etc. of the heat exchange device 100, and ensuring the normal, stable and continuous operation of the heat exchange device 100.

[0041] In an embodiment of the present invention, the detection system also includes a temperature control device (not shown in the figure), which is connected to the two workstations 300 respectively. The temperature control device is used to control the ambient temperature of the workstation 300 to adjust the working conditions of the heating device to be tested. Specifically, the temperature control device has flexible heating and cooling functions, and can adjust the temperature of the workstation 300 according to needs to simulate high or low temperature environmental conditions.

[0042] For example, the temperature control device can heat the station 300 so that the heating device to be tested heats the second medium under high temperature conditions. Conversely, the temperature control device can also cool the station 300 so that the heating device to be tested heats the second medium under low temperature conditions. By changing the working conditions of the heating device to be tested, a comprehensive test and evaluation of the heating performance of the heating device to be tested under different working conditions is achieved, ensuring that the test covers the performance of the heating device to be tested in various practical application scenarios.

[0043] Reference Figure 1As shown, in the embodiment of the present invention, an alarm device 230 is provided in the thermostat 200, and the alarm device 230 is connected to the thermostat 200, and can issue an alarm message according to the liquid volume of the first medium in the thermostat 200. In one example, the alarm device 230 is a floating ball alarm device 230. Specifically, when the liquid volume of the first medium in the thermostat 200 is less than a preset threshold, the alarm device 230 is immediately triggered and issues an alarm message.

[0044] It should be noted that the alarm information may be an audible or visual alarm, a text message, a phone alarm, or an application push notification, which is not limited in this embodiment. This embodiment uses the alarm information to remind the inspection personnel to add the first medium in time, thereby effectively preventing the risk of dry burning of the thermostat 200 due to insufficient liquid, and ensuring the safe operation of the thermostat 200.

[0045] Reference Figure 1 As shown, in the embodiment of the present invention, a filter device 211 is provided in the first circulation loop 210, and the filter device 211 is provided between the heat exchange device 100 and the thermostat 200, and specifically, the filter device 211 is provided between the first circulation pump 600 and the valve body assembly. The filter device 211 is used to filter the first medium flowing from the thermostat 200 to the heat exchange device 100, thereby filtering impurities in the first medium in time, and improving the accuracy of heat exchange control between the first medium and the second medium.

[0046] Some embodiments of the present invention provide a detection method for a heating device, which is applied to the detection system of the heating device in the above embodiment, and specifically refers to Figure 3 to Figure 4 The following is an explanation of the detection method of the heating device.

[0047] Reference Figure 3 As shown, in an embodiment of the present invention, the detection method of the heating device includes: Step S101, controlling the thermostat to maintain the first medium at a preset first temperature value.

[0048] It is understood that in the embodiment of the present invention, the detection system is connected to a controller, and the controller can control the medium flow in the first circulation loop and the second circulation loop and the set power of the heating device to be tested. Among them, the control range of the hydraulic pressure difference of the second medium before and after heating by the heating device to be tested is 0 to 100 kPa (kilopascals), and the control range of the flow of the first medium and the second medium is 2 L / min (liters / minute) to 30 L / min (liters / minute).

[0049] In an embodiment of the present invention, the controller may be provided with a strategic compensation, which can automatically adapt when media with different temperatures, different medium densities, and different specific heat capacities are added to the first circulation loop and the second circulation loop. In particular, in the step of controlling the thermostat to maintain the first medium at a preset first temperature value, when the first medium is heated or cooled to a temperature value close to the first temperature value and does not fluctuate, the heating or cooling rate can be slowed down, and then the temperature of the first medium can be slowly adjusted to the first temperature value, thereby ensuring accurate control of the temperature of the first medium and reducing excessive heating or cooling of the first medium. In one example, the first temperature value is 50°C (degrees Celsius), and the controller first controls the thermostat to raise the temperature of the first medium to 49.8°C. After the first medium is continuously stabilized at 49.8°C, the controller controls the thermostat to slowly raise the temperature of the first medium by 0.2°C.

[0050] Step S102: Control the heat exchange device to allow the second medium to exchange heat with the first medium, so as to heat or cool the second medium.

[0051] In the embodiment of the present invention, after the first medium is maintained at the first temperature value, the thermostat will transport the first medium to the first heat exchange channel in the heat exchange device for heat exchange. Correspondingly, the second medium in the second circulation loop flows to the second heat exchange channel, thereby exchanging heat with the first medium maintained at the first temperature value, so that the second medium is maintained at a temperature value that is the same as or close to the first temperature value. It should be noted that in this embodiment, the actual temperature value of the second medium can be calculated based on the heat exchange efficiency of the heat exchange device and combined with the first temperature value.

[0052] Step S103, controlling the heating device to be tested to heat the second medium, and detecting a second temperature value and flow data of the heated second medium.

[0053] It is understandable that in the embodiment of the present invention, the system can control the current or voltage input to the heating device to be tested, or directly adjust the set power of the heating device to be tested, so as to change the working condition of the heating device to be tested, so that the heating device to be tested heats the second medium under various working conditions. Under each specific working condition, the system can record the corresponding second temperature value and flow data under each working condition, so as to provide data support for subsequent performance evaluation.

[0054] Step S104, determining the heat exchange efficiency of the heating device to be tested according to the first temperature value, the second temperature value and the flow data.

[0055] In the embodiment of the present invention, the temperature difference of the second medium before and after being heated by the heating device to be tested can be calculated based on the first temperature value and the second temperature value. The heat generated by the heating device to be tested under a preset current, voltage or set power can be calculated based on the heat calculation formula, and the heat exchange efficiency can be obtained by calculating the ratio between the heat generated by the heating device to be tested and the actual power of the heating device to be tested.

[0056] Specifically, in the embodiment of the present invention, the heat Q generated by the heating device to be tested is calculated by applying the following formula: ; Wherein, c is the specific heat capacity of the second medium, m is the density of the second medium, v is the flow rate of the second medium, ΔT is the temperature difference of the second medium before and after being heated by the heating device to be tested, and C is the concentration of the second medium.

[0057] In one example, referring to Figure 4 As shown, the specific heat capacity c of the second medium is 2.977 J / (kg•K), and the density of the second medium is 1095 kg / L. Based on this, the heat exchange efficiency of the first heating device is calculated to be 99%, the heat exchange efficiency of the second heating device is 96%, the heat exchange efficiency of the third heating device is 97%, and the heat exchange efficiency of the fourth heating device is 98%.

[0058] Reference Figure 5 As shown, in an embodiment of the present invention, the detection method of the heating device is applied to a vehicle air conditioning system, and the detection method of the heating device further includes: Step S105, obtaining the expected power of the heating device to be tested.

[0059] Step S106, calculating the ratio of the heat exchange efficiency to the expected power, and the difference between the heat exchange efficiency and the expected power.

[0060] It can be understood that in the embodiment of the present invention, the power (i.e., expected power) of the heating device required for vehicle air-conditioning systems of different models and types is different. Based on this, this embodiment can calculate the ratio of the heat exchange efficiency to the expected power, as well as the difference between the heat exchange efficiency and the expected power, so as to comprehensively analyze the heating device to be tested, and screen out the heating device that meets the energy efficiency requirements and is close to the expected power of the system.

[0061] Step S107 , when the ratio is greater than or equal to a preset first threshold value, and the difference is less than or equal to a preset second threshold value, it is determined that the heating device meets the performance requirements of the vehicle air conditioning system.

[0062] It can be understood that the first threshold and the second threshold are pre-set standards for measuring the performance indicators of the heating device to be tested. In one example, the first threshold is set to 95% and the second threshold is set to 80W. In this embodiment, when the ratio of the heat exchange efficiency of the heating device to be tested to the expected power is greater than or equal to 95%, and the difference between the heat exchange efficiency of the heating device to be tested and the expected power is less than or equal to 80W, it can be determined that the heating device to be tested meets the performance requirements of the vehicle air conditioning system.

[0063] The embodiment of the present invention controls a thermostatic device to maintain a first medium at a preset first temperature value, and then transports the first medium whose temperature is maintained at the first temperature value to a heat exchange device through a first circulation loop, and exchanges heat with the first medium through the heat exchange device, so that the second medium reaches a required temperature; then controls a heating device to be tested in a workstation to heat the second medium after heat exchange, and detects a second temperature value and flow data of the second medium through a detection component connected to the workstation; determines the heat exchange efficiency of the heating device to be tested based on the first temperature value, the second temperature value and the flow data, thereby realizing an evaluation of the performance level of the heating device to be tested, and then quickly screening out heating devices that meet the requirements, which not only improves the detection efficiency of the heating device to be tested, shortens the detection cycle, but also reduces the detection cost.

[0064] Some embodiments of the present invention provide a heating device, which is applied to a vehicle air-conditioning system. The vehicle air-conditioning system includes a heater core. The heating device is configured to provide a heat source to the heater core. The heating device is detected using the detection system of the heating device of the above embodiment.

[0065] It can be understood that the heating device in the embodiment of the present invention is detected using the detection system of the heating device in the above-mentioned embodiment. The heating device efficiently screened out by the detection system better matches the performance requirements of the vehicle air-conditioning system, which not only helps to shorten the production cycle of the vehicle air-conditioning system, but also can reduce the failure rate of the heating device, thereby extending the service life of the vehicle air-conditioning system and reducing the maintenance cost of the vehicle air-conditioning system.

[0066] Some embodiments of the present invention provide a vehicle, including the heating device of the above embodiment. Specifically, the vehicle can be a private car, such as a sedan, SUV, MPV or pickup truck. The vehicle can also be an operating vehicle, such as a van, bus, small truck or large trailer. The vehicle can be a gasoline vehicle or a new energy vehicle. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0067] It can be understood that the vehicle in the embodiment of the present invention adopts the heating device of the above-mentioned embodiment. The heating device that better matches the performance requirements of the vehicle air-conditioning system can not only improve the operating efficiency of the vehicle air-conditioning system and improve the performance of the vehicle air-conditioning system, but also improve the durability of the vehicle air-conditioning system, providing passengers with a better riding experience.

[0068] The terms "first", "second", "third", "fourth", etc. (if any) in the description of the embodiments of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present invention described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0069] It should be understood that in the embodiments of the present invention, "at least one (item)" refers to one or more, and "plurality" refers to two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can represent: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple. In the several embodiments provided in the embodiments of the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms. In the embodiments of the present invention, the term "module" or "unit" refers to a computer program or a part of a computer program that has a predetermined function and works together with other related parts to achieve a predetermined goal, and can be implemented in whole or in part by using software, hardware (such as processing circuits or memories) or a combination thereof. Similarly, a processor (or multiple processors or memories) can be used to implement one or more modules or units. In addition, each module or unit can be part of an overall module or unit that includes the function of the module or unit. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the various embodiments of the method of the embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Acce Memory, referred to as RAM), disk or optical disk and other media that can store program codes. The step numbers in the above method embodiment are only provided for the convenience of explanation and description, and no limitation is imposed on the order of the steps. The execution order of each step in the embodiment can be adaptively adjusted according to the understanding of those skilled in the art.

Claims

1. A detection system for a heating device, characterized in that: include: A heat exchange device having a first heat exchange channel and a second heat exchange channel; a thermostat loaded with a first medium, the thermostat being connected to the first heat exchange channel to form a first circulation loop, the thermostat being used to heat or cool the first medium, and transporting the heated or cooled first medium to the heat exchange device through the first circulation loop; At least two workstations, at least two of the workstations are respectively connected to the second heat exchange channel to construct a second circulation loop for the flow of a second medium, the second medium exchanges heat with the first medium under the action of the heat exchange device, and a heating device to be tested is installed in each of the workstations, and the heating device to be tested is configured to heat the second medium; The detection components are respectively connected to at least two of the workstations and are configured to at least detect the temperature value and flow value of the second medium.

2. The detection system of the heating device according to claim 1, characterized in that: A first circulation pump and a valve body assembly are provided in the first circulation loop. The first circulation pump is used to drive the first medium to circulate in the first circulation loop, and the valve body assembly is used to control the on-off of the first circulation loop.

3. The detection system of the heating device according to claim 2, characterized in that: The detection system further comprises a circulation bypass, which is connected in parallel with the first circulation pump and the valve body assembly. A throttle valve is arranged in the circulation bypass, and the throttle valve is configured to be able to adjust the opening to control the flow rate and flow velocity of the first medium.

4. The detection system for a heating device according to claim 1, characterized in that: The detection system also includes a temperature control device, which is respectively connected to at least two of the workstations and is used to control the ambient temperature of the workstations to adjust the working conditions of the heating device to be tested.

5. The detection system for a heating device according to claim 1, characterized in that: An alarm device is provided in the thermostatic device, and the alarm device is configured to issue an alarm message according to the liquid volume of the first medium in the thermostatic device.

6. The detection system for a heating device according to claim 1, characterized in that: A filtering device is provided in the first circulation loop. The filtering device is provided between the heat exchange device and the constant temperature device. The filtering device is used to filter the first medium flowing from the constant temperature device to the heat exchange device.

7. A method for detecting a heating device, characterized in that: A detection system for a heating device according to any one of claims 1 to 6, wherein the detection method comprises: Controlling the thermostat to maintain the first medium at a preset first temperature value; controlling the heat exchange device to allow the second medium to exchange heat with the first medium, so as to heat or cool the second medium; Controlling the heating device to be tested to heat the second medium, and detecting a second temperature value and flow data of the second medium after heating; The heat exchange efficiency of the heating device to be tested is determined according to the first temperature value, the second temperature value and the flow data.

8. The detection method of the heating device according to claim 7, characterized in that: The heating device is applied to a vehicle air conditioning system, and the detection method further comprises: Obtaining the expected power of the heating device to be tested; Calculating a ratio of the heat exchange efficiency to the expected power, and a difference between the heat exchange efficiency and the expected power; When the ratio is greater than or equal to a preset first threshold, and the difference is less than or equal to a preset second threshold, it is determined that the heating device meets the performance requirements of the vehicle air-conditioning system.

9. A heating device, characterized in that: The invention is applied to a vehicle air conditioning system, wherein the vehicle air conditioning system comprises a heater core, the heating device is configured to provide a heat source to the heater core, and the heating device is detected by using a detection system for a heating device as described in any one of claims 1 to 6.

10. A vehicle, characterized in that: Comprising a heating device as claimed in claim 9.

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