Off-line detection coolant filling device and method

Abstract

The present invention relates to the field of vehicle-mounted detection technology, and provides an offline detection coolant filling device and method, the device comprising: a filling detection module, a receiving module and a vehicle-mounted communication module connected in sequence by signals; the filling detection module is used to receive a signal triggered by the gravity of the coolant, and based on the signal triggered by the gravity of the coolant, generates a filling status signal of the coolant and sends it to the receiving module; the receiving module is arranged at the self-diagnosis subsystem interface of the vehicle-mounted system, and is used to receive the filling status signal, generate filling information and send it to the vehicle-mounted communication module; the vehicle-mounted communication module is used to receive the filling information, generate a control signal to control a water pump. The present invention can not only effectively improve the utilization efficiency of the water pump, but also improve the filling efficiency of the coolant.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted detection, and in particular to an off-line detection coolant filling device and method. Background Art

[0002] For electric engineering vehicles, the thermal management system has a very important impact on the power, safety, and efficiency of the battery and drive system of electric vehicles. Electric engineering vehicles need to be filled with coolant to meet the heat dissipation needs of the entire vehicle when they are produced. When the coolant is filled, there is air in the pipeline, which leads to problems such as insufficient coolant filling, leakage, or multiple fillings. It is time-consuming, labor-intensive, and inefficient. In view of the above situations, it is necessary to provide relevant auxiliary filling devices at the relevant stations of the offline inspection to improve the filling efficiency. Summary of the invention

[0003] The present invention provides an offline detection coolant filling device and method, which are used to solve the defect of low coolant filling efficiency in the prior art and improve the filling efficiency.

[0004] The present invention provides a coolant filling device for offline detection, comprising: a filling detection module, a receiving module and a vehicle-mounted communication module which are sequentially connected by signals;

[0005] The filling detection module is used to receive a signal triggered by the gravity of the coolant, and generate a filling status signal of the coolant based on the signal triggered by the gravity of the coolant and send it to the receiving module;

[0006] The receiving module is arranged at the self-diagnosis subsystem interface of the vehicle-mounted system, and is used to receive the filling status signal, generate filling information, and send it to the vehicle-mounted communication module;

[0007] The vehicle-mounted communication module is used to receive the filling information and generate a control signal to control the water pump.

[0008] According to the present invention, a coolant filling device for offline detection is provided, wherein the filling detection module comprises a contact submodule and a detection submodule;

[0009] The contact submodule includes a first contact sheet and a second contact sheet connected to each other;

[0010] The first contact piece receives a signal triggered by the gravity of the coolant and drives the second contact piece to move. After the second contact piece moves, it touches the detection submodule, so that the contact submodule generates a coolant filling status signal.

[0011] According to the offline detection coolant filling device provided by the present invention, the receiving module is specifically used for:

[0012] receiving the filling status signal, and determining a current filling amount corresponding to the filling status signal;

[0013] When the current filling amount corresponding to the filling status signal does not reach the target position, confirming that the filling amount is insufficient, and generating first filling information and sending it to the vehicle-mounted communication module;

[0014] When the current filling amount corresponding to the filling status signal reaches or exceeds the target position, it is confirmed that the filling amount is sufficient, and second filling information is generated and sent to the vehicle-mounted communication module.

[0015] According to a downline detection coolant filling device provided by the present invention, a filling device is provided on the filling gun;

[0016] The receiving module generates a first liquid adding signal based on the first filling information and feeds it back to the filling device, so that the filling gun continues to add liquid;

[0017] or,

[0018] The receiving module generates a second liquid adding signal based on the second filling information and feeds the second liquid adding signal back to the filling device, so that the filling gun stops adding liquid.

[0019] According to the coolant filling device for offline detection provided by the present invention, the vehicle-mounted communication module is specifically used for:

[0020] In case of receiving the filling information, generating a first control signal based on the filling information, and controlling the water pump to start based on the first control signal;

[0021] In the case where the filling information is not received, a second control signal is generated, and the water pump is controlled to be turned off based on the second control signal.

[0022] According to a coolant filling device for offline detection provided by the present invention, the filling detection module is also used for:

[0023] When the filling gun stops adding liquid, a gravity disappearance signal is detected and a filling completion signal is generated and sent to the receiving module.

[0024] The present invention also provides an operating machine, comprising the offline detection coolant filling device as described in any one of the above items.

[0025] According to a working machine provided by the present invention, the filling detection module is arranged at the bottle mouth of the expansion pot of the vehicle-mounted system.

[0026] The present invention also provides a method for filling coolant for offline detection, which is applied to the offline detection coolant filling device as described in any one of the above items, comprising:

[0027] Receiving a signal triggered by the gravity of the coolant through a filling detection module, and generating a filling status signal of the coolant based on the signal triggered by the gravity of the coolant and sending it to the receiving module;

[0028] The receiving module receives the filling status signal to generate filling information and sends it to the vehicle communication module;

[0029] The filling information is received by the vehicle-mounted communication module to generate a control signal to control the water pump.

[0030] According to a method for filling coolant for offline detection provided by the present invention, the receiving module receives the filling status signal to generate filling information and sends it to the vehicle-mounted communication module, comprising:

[0031] receiving the filling status signal, and determining a current filling amount corresponding to the filling status signal;

[0032] When the current filling amount corresponding to the filling status signal does not reach the target position, confirming that the filling amount is insufficient, and generating first filling information and sending it to the vehicle-mounted communication module;

[0033] When the current filling amount corresponding to the filling status signal reaches or exceeds the target position, it is confirmed that the filling amount is sufficient, and second filling information is generated and sent to the vehicle-mounted communication module.

[0034] According to a method for filling coolant during offline detection provided by the present invention, when the current filling amount corresponding to the filling state signal reaches or exceeds the target position, after confirming that the filling amount is sufficient and generating second filling information and sending it to the vehicle-mounted communication module, the method further includes:

[0035] Based on the first filling information, a first liquid filling signal is generated and fed back to the filling device, so that the filling gun continues to add liquid;

[0036] or,

[0037] A second liquid adding signal is generated based on the second filling information and fed back to the filling device to stop the filling gun from adding liquid.

[0038] According to a method for filling coolant during offline detection provided by the present invention, the method of receiving the filling information through the vehicle-mounted communication module to generate a control signal to control the water pump includes:

[0039] In case of receiving the filling information, generating a first control signal based on the filling information, and controlling the water pump to start based on the first control signal;

[0040] In the case where the filling information is not received, a second control signal is generated, and the water pump is controlled to be turned off based on the second control signal.

[0041] According to a method for filling coolant during offline detection provided by the present invention, after generating a filling status signal of coolant based on the gravity signal and sending it to the receiving module, the method further comprises:

[0042] When the filling gun stops adding liquid, a gravity disappearance signal is detected and a filling completion signal is generated and sent to the receiving module.

[0043] The present invention provides an offline detection coolant filling device and method, which receives a signal triggered by the gravity of the filled coolant through a filling detection module arranged at the mouth of the expansion pot, generates a filling status signal of the coolant and sends it to a receiving module, and the receiving module generates filling information according to the filling status signal, determines whether the filling at this time continues, and then generates a control signal from the filling information to control the opening and closing of the water pump. The present invention detects the signal triggered by the gravity of the filling liquid, and then controls the water pump according to different filling states, turns on the water pump when filling is needed, and turns off the water pump when filling is not needed, which can not only effectively improve the utilization efficiency of the water pump, but also improve the filling efficiency of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 It is a structural schematic diagram of the offline detection coolant filling device provided by the present invention;

[0046] Figure 2 is a schematic diagram of the filling liquid detection module of the present invention in a state where no coolant is added;

[0047] Figure 3 is a schematic diagram of the filling liquid detection module of the present invention in a state of being filled with coolant;

[0048] Figure 4 is a schematic diagram of a receiving module of the present invention;

[0049] Figure 5 It is a schematic flow chart of the method for filling coolant during offline detection provided by the present invention;

[0050] Reference numerals:

[0051] 110, filling detection module; 120, receiving module; 130, vehicle communication module;

[0052] 210, filling detection module; 220, expansion pot; 211, contact submodule; 212, detection submodule; 221, first contact sheet; 222, second contact sheet;

[0053] 310, expansion pot; 320, filling detection module; 321, contact submodule; 322, detection submodule; 331, first contact piece; 332, second contact piece. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Combine the following Figures 1 to 5 The present invention describes a device and method for filling coolant during offline detection.

[0056] Reference Figure 1 The present invention provides a device for detecting coolant filling at the offline stage, comprising: a filling detection module 110, a receiving module 120 and a vehicle-mounted communication module 130 which are sequentially connected by signals.

[0057] The filling detection module 110 is used to receive a signal triggered by the gravity of the coolant, and generate a coolant filling status signal based on the signal triggered by the gravity of the coolant and send it to the receiving module 120;

[0058] The receiving module 120 is arranged at the interface of the vehicle self-diagnosis system, and is used to receive the filling status signal, generate filling information, and send it to the vehicle communication module 130;

[0059] The vehicle-mounted communication module 130 is used to receive the filling information and generate a control signal to control the water pump.

[0060] Reference Figure 2 In this embodiment, the filling detection module 210 can be arranged at the bottle mouth of the expansion pot 220, and the arrangement mode can be set to a plug-in movable connection to facilitate the installation and removal of the filling detection module 210. The filling detection module 210 includes a contact submodule 211 and a detection submodule 212. The contact submodule 211 includes a first horizontal contact piece 221 and an inclined second contact piece 222 connected to each other. When the coolant is not added, the lower end of the filling detection module 210 remains horizontal, that is, it is not affected by gravity.

[0061] Reference Figure 3The filling detection module 320 includes a contact submodule 321 and a detection submodule 322. The contact submodule 321 includes a first contact piece 331 and a second contact piece 332 connected to each other. When the filling gun fills coolant into the expansion pot 310, the first contact piece 331 of the filling detection module 320 is affected by the gravity of the coolant, and drives the second contact piece 332 to move toward the detection submodule 322. When the second contact piece 222 touches the detection submodule 322, the second contact piece 332 becomes vertical at this time, and the detection submodule 322 will generate a filling status signal indicating that coolant is being filled at this time, and send the filling status signal to the receiving module.

[0062] Reference Figure 4 The receiving module in this embodiment is arranged at the interface of the vehicle-mounted self-diagnosis system (OBD), and generates filling information according to the filling status signal sent by the filling detection module, indicating whether the signal of filling coolant is detected at this time, and sends it to the vehicle-mounted communication module (VCU) through a CAN message.

[0063] After receiving the filling information, the vehicle communication module (VCU) will generate different control instructions to control the water pump, such as turning on the water pump to exhaust, or turning off the water pump to maintain normal operation.

[0064] It should be noted that the filling detection device in this embodiment is installed on the expansion pot, and the receiving device is installed on the vehicle-mounted self-diagnosis system (OBD) port, both of which are standard interfaces and can be used universally on vehicles of various models.

[0065] The offline detection coolant filling device provided by the present invention receives a signal triggered by the gravity of the filled coolant through the filling detection module 110 arranged at the bottle mouth of the expansion pot, generates a filling status signal of the coolant and sends it to the receiving module 120, and the receiving module 120 generates filling information according to the filling status signal, determines whether the filling at this time continues, and then generates a control signal from the filling information to control the opening and closing of the water pump. The present invention detects the signal triggered by the gravity of the filling liquid, and then controls the water pump according to different filling states, turns on the water pump when filling is needed, and turns off the water pump when filling is not needed, which can not only effectively improve the utilization efficiency of the water pump, but also improve the filling efficiency of the coolant.

[0066] Based on the above embodiments, the receiving module is specifically used for:

[0067] receiving the filling status signal, and determining a current filling amount corresponding to the filling status signal;

[0068] When the current filling amount corresponding to the filling status signal does not reach the target position, confirming that the filling amount is insufficient, and generating first filling information and sending it to the vehicle-mounted communication module;

[0069] When the current filling amount corresponding to the filling status signal reaches or exceeds the target position, it is confirmed that the filling amount is sufficient, and second filling information is generated and sent to the vehicle-mounted communication module.

[0070] Specifically, this embodiment provides the specific functions of the receiving module, which is how to determine whether the filling amount is sufficient by judging the filling status signal.

[0071] First, a filling state signal is received, and the amount of coolant in the expansion pot is determined according to the numerical value or fluctuation of the filling state signal. It should be noted that the filling detection module in this embodiment receives different signals triggered by the gravity of the filling liquid according to the amount of the filled coolant, so different filling state signals are generated. When the filling state signal indicates that the filling amount is insufficient, the vehicle-mounted communication module sends an instruction to turn on the water pump to the control module; when the filling state signal indicates that the filling amount is sufficient, the vehicle-mounted communication module turns off the instruction to turn on the water pump to the control module. Specifically, according to the judgment of the filling amount corresponding to the filling state signal, the two results are obtained. On the one hand, the filling amount of the filling coolant does not reach the standard, that is, the current filling amount does not reach the target position, and at this time, it is necessary to generate the first filling information and send it to the vehicle-mounted communication module. In other words, the filling amount at this time is insufficient, and the water pump needs to be turned on, and the filling gun continues to fill the coolant until the filling amount reaches the standard.

[0072] On the other hand, when the amount of coolant added reaches the standard, that is, the amount of coolant added reaches or exceeds the target position, the first filling information needs to be generated and sent to the vehicle communication module. In other words, the amount of coolant added is sufficient at this time, and the vehicle communication module needs to turn off the water pump and stop the filling gun from adding liquid in time.

[0073] This embodiment detects the gravity of the coolant after filling, thereby determining whether the amount of coolant filling meets the requirements, and stops filling the coolant in time after the filling is completed, thereby saving energy consumption.

[0074] Based on the above embodiments, a filling device is provided on the filling gun;

[0075] The receiving module can generate a first liquid adding signal based on the first filling information and feed it back to the filling device, so that the filling gun continues to add liquid.

[0076] The receiving module can also generate a second liquid filling signal based on the second filling information and feed it back to the filling device to stop the filling gun from adding liquid.

[0077] Specifically, this embodiment provides other uses of the receiving module. After receiving the filling status signal and generating filling information, the filling information is sent to the vehicle-mounted communication module on the one hand, and the filling information is fed back to the filling device disposed on the filling gun on the other hand.

[0078] After receiving the feedback from the receiving module, the filling device can adjust the working state of the filling gun in time. If the first filling signal feedback is received, it means that the added coolant has not yet reached the standard, and it is necessary to continue to add liquid, and the filling gun maintains a normal working state. If the second filling signal feedback is received, it means that the added coolant has reached the requirement, and it is necessary to stop the filling of the filling gun in time. This embodiment can effectively save energy consumption by adjusting the working state of the filling gun in time.

[0079] Based on the above embodiments, the vehicle-mounted communication module is specifically used for:

[0080] In case of receiving the filling information, generating a first control signal based on the filling information, and controlling the water pump to start based on the first control signal;

[0081] In the case where the filling information is not received, a second control signal is generated, and the water pump is controlled to be turned off based on the second control signal.

[0082] Specifically, this embodiment provides specific steps for the vehicle-mounted signal to generate different control signals according to the filling information and perform different controls on the water pump.

[0083] When the vehicle-mounted communication module receives the filling information, it means that the added coolant has not yet reached the standard and needs to be further added, so a first control signal is generated to control the water pump to start exhausting. When the added coolant has reached the requirement, the filling gun will also stop working, and the vehicle-mounted communication module will no longer be able to receive the signal sent by the receiving module, and a second control signal is generated to control the water pump to shut down.

[0084] Based on the above embodiments, the filling detection module is further used for:

[0085] When the filling gun stops adding liquid, a gravity disappearance signal is detected and a filling completion signal is generated and sent to the receiving module.

[0086] Specifically, this embodiment provides another use of the filling detection module. When the filling detection module receives the second filling information fed back by the receiving module, the filling gun stops working in time, causing the gravity signal previously detected by the filling detection module to disappear, indicating that the filling is completed at this time, and a filling completion signal is generated and sent to the receiving module, so that the receiving module no longer sends filling information to the vehicle-mounted communication module.

[0087] The present invention also provides an operating machine, comprising the offline detection coolant filling device as described in any one of the above items.

[0088] Based on the above embodiments, the filling detection module is arranged at the bottle mouth of the expansion pot of the vehicle-mounted system.

[0089] The method for filling coolant for offline detection provided by the present invention is described below. The method for filling coolant for offline detection described below and the device for filling coolant for offline detection described above can be referred to each other.

[0090] Reference Figure 5 The present invention provides a method for filling coolant for offline detection, comprising the following steps:

[0091] Step 510: receiving a signal triggered by the gravity of the coolant through a filling detection module, and generating a coolant filling status signal based on the signal triggered by the gravity of the coolant and sending it to the receiving module;

[0092] Step 520: Receive the filling status signal through the receiving module to generate filling information and send it to the vehicle communication module;

[0093] Step 530: Receive the filling information through the vehicle-mounted communication module to generate a control signal to control the water pump.

[0094] The present embodiment provides a method for filling coolant for off-line detection of special vehicles based on the above device. Different filling status information is generated by the signals detected by the filling detection device under different circumstances. On the one hand, when no coolant is added, the lower end of the filling detection module remains horizontal, that is, it is not affected by gravity. On the other hand, when the filling gun fills coolant into the expansion pot, the first contact piece of the filling detection module is affected by the gravity of the coolant, driving the second contact piece to tilt toward the detection submodule. When the second contact piece touches the detection submodule, the detection submodule will generate a filling status signal indicating that coolant is being added at this time, and send the filling status signal to the receiving module.

[0095] The filling information is generated according to the filling status signal sent by the filling detection module, indicating whether the signal of adding coolant is detected at this time, and is sent to the vehicle communication module through the CAN message. After receiving the filling information, the vehicle communication module (VCU) will generate different control instructions to control the water pump, such as turning on the water pump for exhaust, or turning off the water pump to maintain normal operation.

[0096] The offline detection coolant filling method provided by the present invention receives a signal triggered by the gravity of the filled coolant through a filling detection module arranged at the bottle mouth of the expansion pot, generates a filling status signal of the coolant and sends it to the receiving module, and the receiving module generates filling information according to the filling status signal to determine whether the filling at this time continues, and then generates a control signal from the filling information to control the opening and closing of the water pump. The present invention detects the signal triggered by the gravity of the filling liquid, and then controls the water pump according to different filling states, turns on the water pump when filling is needed, and turns off the water pump when filling is not needed, which can not only effectively improve the utilization efficiency of the water pump, but also improve the filling efficiency of the coolant.

[0097] Based on the above embodiment, the receiving module receives the filling status signal to generate filling information and sends it to the vehicle communication module, including:

[0098] receiving the filling status signal, and determining a current filling amount corresponding to the filling status signal;

[0099] When the current filling amount corresponding to the filling status signal does not reach the target position, confirming that the filling amount is insufficient, and generating first filling information and sending it to the vehicle-mounted communication module;

[0100] When the current filling amount corresponding to the filling status signal reaches or exceeds the target position, it is confirmed that the filling amount is sufficient, and second filling information is generated and sent to the vehicle-mounted communication module.

[0101] Based on the above embodiment, when the current filling amount corresponding to the filling status signal reaches or exceeds the target position, it is confirmed that the filling amount is sufficient, and after generating the second filling information and sending it to the vehicle-mounted communication module, it also includes: on the one hand, based on the first filling information, generating a first liquid filling signal and feeding it back to the filling device disposed on the filling gun, so that the filling gun continues to add liquid;

[0102] On the other hand, a second liquid adding signal is generated based on the second filling information and fed back to the filling device disposed on the filling gun, so that the filling gun stops adding liquid.

[0103] Based on the above embodiment, the step of receiving the filling information through the vehicle communication module to generate a control signal to control the water pump includes:

[0104] In case of receiving the filling information, generating a first control signal based on the filling information, and controlling the water pump to start based on the first control signal;

[0105] In the case where the filling information is not received, a second control signal is generated, and the water pump is controlled to be turned off based on the second control signal.

[0106] Based on the above embodiment, after generating a coolant filling status signal based on the gravity signal and sending it to the receiving module, the method further includes:

[0107] When the filling gun stops adding liquid, a gravity disappearance signal is detected and a filling completion signal is generated and sent to the receiving module.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coolant filling device for offline detection, characterized in that: include: A filling detection module, a receiving module and an on-board communication module which are sequentially signal-connected; The filling detection module is used to receive a signal triggered by the gravity of the coolant, and generate a filling status signal of the coolant based on the signal triggered by the gravity of the coolant and send it to the receiving module; The receiving module is arranged at the self-diagnosis subsystem interface of the vehicle-mounted system, and is used to receive the filling status signal, generate filling information, and send it to the vehicle-mounted communication module; The receiving module is specifically used for: receiving the filling status signal, and determining a current filling amount corresponding to the filling status signal; When the current filling amount corresponding to the filling status signal does not reach the target position, confirming that the filling amount is insufficient, and generating first filling information and sending it to the vehicle-mounted communication module; When the current filling amount corresponding to the filling status signal reaches or exceeds the target position, confirming that the filling amount is sufficient, and generating second filling information and sending it to the vehicle-mounted communication module; The vehicle-mounted communication module is used to receive the filling information and generate a control signal to control the water pump; The filling detection module includes a contact submodule and a detection submodule; The contact submodule includes a first contact sheet and a second contact sheet connected to each other; The first contact piece receives a signal triggered by the gravity of the coolant and drives the second contact piece to move. After the second contact piece moves, it touches the detection submodule, so that the contact submodule generates a coolant filling status signal.

2. The offline detection coolant filling device according to claim 1, characterized in that: The filling gun is provided with a filling device; The receiving module generates a first liquid adding signal based on the first filling information and feeds it back to the filling device, so that the filling gun continues to add liquid; or, The receiving module generates a second liquid adding signal based on the second filling information and feeds the second liquid adding signal back to the filling device, so that the filling gun stops adding liquid.

3. The coolant filling device for offline detection according to claim 1 or 2, characterized in that: The vehicle-mounted communication module is specifically used for: In case of receiving the filling information, generating a first control signal based on the filling information, and controlling the water pump to start based on the first control signal; In the case where the filling information is not received, a second control signal is generated, and the water pump is controlled to be turned off based on the second control signal.

4. The coolant filling device for offline detection according to claim 2, characterized in that: The filling detection module is also used for: When the filling gun stops adding liquid, a gravity disappearance signal is detected and a filling completion signal is generated and sent to the receiving module.

5. A working machine, characterized in that: It comprises the offline detection coolant filling device as described in any one of claims 1 to 4.

6. The working machine according to claim 5, characterized in that: The filling detection module is arranged at the bottle mouth of the expansion pot of the vehicle-mounted system.

7. A method for filling coolant for offline detection, applied to the offline detection coolant filling device according to any one of claims 1 to 4, characterized in that: include: Receiving a signal triggered by the gravity of the coolant through a filling detection module, and generating a filling status signal of the coolant based on the signal triggered by the gravity of the coolant and sending it to the receiving module; The receiving module receives the filling status signal to generate filling information and sends it to the vehicle communication module; The filling information is received by the vehicle-mounted communication module to generate a control signal to control the water pump.

8. The method for filling coolant for offline detection according to claim 7, characterized in that: The receiving module receives the filling status signal to generate filling information and sends the filling information to the vehicle-mounted communication module, including: receiving the filling status signal, and determining a current filling amount corresponding to the filling status signal; When the current filling amount corresponding to the filling status signal does not reach the target position, confirming that the filling amount is insufficient, and generating first filling information and sending it to the vehicle-mounted communication module; When the current filling amount corresponding to the filling status signal reaches or exceeds the target position, it is confirmed that the filling amount is sufficient, and second filling information is generated and sent to the vehicle-mounted communication module.

9. The method for filling coolant for offline detection according to claim 8, characterized in that: When the current filling amount corresponding to the filling state signal reaches or exceeds the target position, after confirming that the filling amount is sufficient and generating second filling information and sending it to the vehicle-mounted communication module, the method further includes: Based on the first filling information, a first liquid filling signal is generated and fed back to the filling device, so that the filling gun continues to add liquid; or, A second liquid adding signal is generated based on the second filling information and fed back to the filling device to stop the filling gun from adding liquid.

10. The method for filling coolant for offline detection according to claim 7, characterized in that: The step of receiving the filling information through the vehicle-mounted communication module to generate a control signal to control the water pump includes: In case of receiving the filling information, generating a first control signal based on the filling information, and controlling the water pump to start based on the first control signal; In the case where the filling information is not received, a second control signal is generated, and the water pump is controlled to be turned off based on the second control signal.

11. The method for filling coolant for offline detection according to claim 7, characterized in that: After generating a coolant filling status signal based on the gravity signal and sending it to the receiving module, the method further includes: When the filling gun stops adding liquid, a gravity disappearance signal is detected and a filling completion signal is generated and sent to the receiving module.

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