Vehicle battery heating system

Abstract

The application relates to the technical field of automobile control, and discloses a vehicle-mounted battery heating system, which comprises an internal combustion engine and a cooling exhaust pipe; a first outlet of the internal combustion engine is connected with a pipe inlet of the cooling exhaust pipe, and a pipe outlet of the cooling exhaust pipe is connected with an inlet of a battery pack box; the internal combustion engine is used for generating heat when the ambient temperature is lower than a first preset temperature; and the cooling exhaust pipe is used for delivering the heat generated by the internal combustion engine to the battery pack box. Since a small internal combustion engine is arranged in a new energy automobile, the heat generated by the internal combustion engine is used for heating the battery pack box through the cooling exhaust pipe, the energy generated by the internal combustion engine is reasonably utilized, the problem that the battery heating efficiency is poor due to battery power loss in severe cold regions can be solved, the situation that the battery self-heating power loss is serious and the drivability of the new energy automobile is affected when the automobile is in a low-temperature environment can be avoided, and therefore the energy utilization rate is improved, and the user experience is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive control technology, and more particularly to an on-board battery heating system. Background Technology

[0002] With the development of a low-carbon economy, stricter requirements have been placed on energy conservation and emission reduction. New energy vehicles, due to their energy-saving and environmentally friendly characteristics, have become one of the future directions for automotive development. New energy vehicles use batteries to drive motors as their power source. However, in low temperatures, the batteries used in new energy vehicles require heating to ensure battery performance.

[0003] However, existing methods all rely on the heat generated by the car's onboard battery to heat the vehicle. Since the car itself is in a low-temperature environment, this can cause the battery to deplete significantly. Furthermore, the heating method is inefficient and can affect the driving performance of new energy vehicles, leading to a waste of resources.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide an on-board battery heating system that addresses the technical problem of low efficiency in existing automotive on-board battery-generated heat supply methods.

[0006] To achieve the above objectives, the present invention provides an on-board battery heating system, the on-board battery heating system comprising: an internal combustion engine and cooling pipes;

[0007] The first outlet of the internal combustion engine is connected to the inlet of the cooling coil, and the outlet of the cooling coil is connected to the inlet of the battery pack box.

[0008] The internal combustion engine is used to generate heat when the ambient temperature is lower than a first preset temperature;

[0009] The cooling pipes are used to transfer the heat generated by the internal combustion engine to the battery pack.

[0010] Optionally, the cooling pipe is also connected to the vehicle interior air vent and is used to transfer the heat generated by the internal combustion engine to the vehicle interior through the vehicle interior air vent.

[0011] Optionally, the internal combustion engine is also connected to a generator;

[0012] The internal combustion engine is also used to output the generated heat to the generator so that the generator produces electrical energy and transmits the electrical energy to the battery pack for charging.

[0013] Optionally, the on-board battery heating system further includes: a temperature sensor;

[0014] The temperature sensor is installed on the first outlet pipe of the internal combustion engine;

[0015] The temperature sensor is used to collect the engine body temperature of the internal combustion engine.

[0016] Optionally, the on-board battery heating system further includes: a cooling tank;

[0017] The opening of the cooling box is connected to the internal combustion engine;

[0018] The cooling box is used to cool the internal combustion engine when the internal combustion engine temperature is higher than a second preset temperature.

[0019] Optionally, the on-board battery heating system further includes: a hydraulic directional valve;

[0020] The inlet of the hydraulic reversing valve is connected to the outlet of the cooling coil, the first outlet of the hydraulic reversing valve is connected to the inlet of the battery pack box through the cooling coil, and the second outlet of the hydraulic reversing valve is connected to the vehicle air vent through the cooling coil.

[0021] The hydraulic reversing valve is used to connect the cooling pipe and the air outlet in the vehicle when the internal combustion engine temperature is higher than the third preset temperature, so as to transfer the heat generated by the internal combustion engine to the vehicle interior for heating through the air outlet.

[0022] Optionally, the on-board battery heating system further includes: a temperature controller;

[0023] The input terminal of the temperature controller is connected to the output terminal of the temperature sensor, and the first control terminal of the temperature controller is connected to the input terminal of the hydraulic directional valve.

[0024] The temperature controller is used to output a reversing signal to the hydraulic reversing valve when the internal combustion engine temperature is higher than a third preset temperature, so as to control the hydraulic reversing valve to open the pipe between the cooling pipe and the air outlet in the vehicle.

[0025] Optionally, the cooling box includes: a heat dissipation fan;

[0026] The second control terminal of the temperature controller is connected to the input terminal of the cooling fan;

[0027] The temperature controller is used to output a drive signal to drive the cooling fan to cool the internal combustion engine when the internal combustion engine temperature is higher than a second preset temperature.

[0028] Optionally, the temperature controller includes a first switching module, a second switching module, and a trigger module;

[0029] The input terminal of the first switch module is connected to the first terminal of the temperature sensor, the first signal reference terminal of the first switch module is connected to the first output terminal of the trigger module, the switch control terminal of the first switch module is connected to the hydraulic reversing valve, the ground terminal of the first switch module is grounded, the first terminal of the temperature sensor is connected to the external power supply voltage, the second terminal of the temperature sensor is connected to the signal input terminal of the trigger module, the input terminal of the second switch module is connected to the first terminal of the temperature sensor, the second signal reference terminal of the second switch module is connected to the second output terminal of the trigger module, the switch control terminal of the second switch module is connected to the cooling fan, the ground terminal of the second switch module is grounded, and the ground terminal of the trigger module is grounded.

[0030] The triggering module is used to detect the temperature signal collected by the temperature sensor, and when the temperature signal reaches a first preset reference signal, generate a first switch signal and transmit the first switch signal to the first switch module.

[0031] The triggering module is also used to detect the temperature signal collected by the temperature sensor, and when the temperature signal reaches the second preset reference signal, generate a second switch signal and transmit the second switch signal to the second switch module;

[0032] The first switching module is used to generate a reversing signal and transmit the reversing signal to the hydraulic reversing valve when it receives the first switching signal sent by the triggering module.

[0033] The second switch module is used to generate a drive signal and transmit the drive signal to the cooling fan when it receives the second switch signal sent by the trigger module.

[0034] Optionally, the triggering module includes: a first voltage regulator module, a second voltage regulator module, and a voltage divider module;

[0035] In this configuration, the first terminal of the voltage divider module is connected to the second terminal of the temperature sensor, the second terminal of the voltage divider module is grounded, the reference terminal of the first voltage regulator module is connected to the first terminal of the voltage divider module, the anode of the first voltage regulator module is connected to the second terminal of the voltage divider module, the cathode of the first voltage regulator module is connected to the first signal reference terminal of the first switch module, the reference terminal of the second voltage regulator module is connected to the first terminal of the voltage divider module, the anode of the second voltage regulator module is connected to the second terminal of the voltage divider module, and the cathode of the first voltage regulator module is connected to the second signal reference terminal of the second switch module.

[0036] The first voltage regulator module is used to compare the temperature signal collected by the temperature sensor with a first preset reference signal, and when the temperature signal reaches the first preset reference signal, generate a first switching signal and transmit the first switching signal to the first switching module;

[0037] The second voltage regulator module is used to compare the temperature signal collected by the temperature sensor with a second preset reference signal, and when the temperature signal reaches the second preset reference signal, generate a second switching signal and transmit the second switching signal to the second switching module.

[0038] This invention proposes an on-board battery heating system, comprising an internal combustion engine and a cooling coil; a first outlet of the internal combustion engine is connected to the inlet of the cooling coil, and the outlet of the cooling coil is connected to the inlet of the battery pack; the internal combustion engine generates heat when the ambient temperature is lower than a first preset temperature; the cooling coil transports the heat generated by the internal combustion engine to the battery pack. Because this invention incorporates a small internal combustion engine inside the new energy vehicle, the heat generated by the internal combustion engine heats the battery pack through the cooling coil. This rationally utilizes the energy generated by the internal combustion engine, solving the problem of poor battery heating due to battery depletion in extremely cold regions, and avoiding the situation where severe battery self-heating and depletion affect the driving performance of the new energy vehicle in low-temperature environments, thereby improving energy utilization and enhancing the user experience. Attached Figure Description

[0039] Figure 1 This is a module functional diagram of the first embodiment of the vehicle-mounted battery heating system of the present invention;

[0040] Figure 2 This is a system connection diagram of the first embodiment of the vehicle battery heating system of the present invention;

[0041] Figure 3 This is a schematic diagram of the module function of the temperature controller in the second embodiment of the vehicle battery heating system of the present invention;

[0042] Figure 4 This is a circuit diagram of the temperature controller in the second embodiment of the vehicle battery heating system of the present invention.

[0043] Explanation of icon numbers:

[0044] label name label name 10 internal combustion engine 20 Cooling pipes 30 Battery pack box 40 Car interior air vents 50 dynamo 60 Temperature sensor 70 Cooling box 80 Hydraulic directional valve 90 Temperature controller 91 First switch module 92 Second switch module 93 Trigger module R1~R5 First to fifth resistors Q1~Q2 First and second MOSFETs D1~D2 First and second Zener diodes

[0045] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0048] It should be noted that all directional indications (such as up, down, near, far, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0049] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, the user should consider such a combination of technical solutions to be non-existent and not within the scope of protection claimed by this invention.

[0050] This invention provides an on-board battery heating system, referring to... Figure 1 , Figure 1 This is a module functional diagram of the first embodiment of the vehicle battery heating system of the present invention.

[0051] based on Figure 1 The first embodiment of the vehicle battery heating system of the present invention is presented.

[0052] In this embodiment, the on-board battery heating system includes: an internal combustion engine 10 and a cooling pipe 20;

[0053] The first outlet of the internal combustion engine 10 is connected to the inlet of the cooling pipe 20, and the outlet of the cooling pipe 20 is connected to the inlet of the battery pack box 30.

[0054] The internal combustion engine 10 is used to generate heat when the ambient temperature is lower than a first preset temperature;

[0055] The cooling pipe 20 is used to transfer the heat generated by the internal combustion engine to the battery pack 30.

[0056] It should be noted that an internal combustion engine can be any device that can burn fuel inside the machine to generate heat, such as a piston internal combustion engine or a small internal combustion engine. The first preset temperature is a preset temperature set to affect battery performance when the ambient temperature is below a certain level. For example, the operating temperature of a typical battery is between -20 degrees Celsius and 60 degrees Celsius, so the first preset temperature can be set to -20 degrees Celsius. When the ambient temperature is detected to be below -20 degrees Celsius, the internal combustion engine can be started to generate heat to heat the battery pack. The operating temperature of batteries made of different materials is also different, and the first preset temperature is also different. This embodiment does not limit this.

[0057] Understandably, cooling coils are a type of evaporator coil used to cool air. By utilizing the heat conduction properties of cooling coils to cool air, the heat generated inside the internal combustion engine can be converted into heat from the liquid or gas inside the coils, and then the heat can be transferred to the battery pack for heating, thereby solving the problem of poor heating effect caused by battery depletion in extremely cold regions.

[0058] Furthermore, considering that the internal combustion engine generates a surplus of heat, referring to Figure 2 , Figure 2 This is a system connection diagram of the first embodiment of the vehicle-mounted battery heating system of the present invention. Figure 2 As shown, the cooling pipe 20 is also connected to the vehicle interior air outlet 40 and is used to transfer the heat generated by the internal combustion engine 10 to the vehicle interior through the vehicle interior air outlet 40.

[0059] It should be noted that the air vents inside the vehicle are connected to the vehicle's air conditioning system. When the heat generated by the internal combustion engine is sufficient to heat the battery pack, the excess heat generated by the internal combustion engine can be transferred to the vehicle interior for heating through the air vents, saving on battery heating consumption and improving energy utilization.

[0060] Furthermore, considering that the internal combustion engine generates a surplus of heat, in this embodiment, as... Figure 2 As shown, the internal combustion engine 10 is also connected to the generator 50; the internal combustion engine 10 is also used to output the generated heat to the generator 50 so that the generator 50 generates electrical energy and transmits the electrical energy to the battery pack 30 for charging.

[0061] It is important to emphasize that when the heat generated by the internal combustion engine is sufficient to heat the battery pack, and the vehicle interior is adequately heated or does not require heating, the excess heat generated by the internal combustion engine can be transferred to the generator to generate electricity to charge the battery pack. This not only improves energy utilization but also allows for emergency charging when the battery is depleted.

[0062] Furthermore, considering the situation where the internal combustion engine generates heat and rises in temperature, in this embodiment, the on-board battery heating system further includes: a temperature sensor 60; the temperature sensor is disposed on the first outlet pipe of the internal combustion engine; the temperature sensor 60 is used to collect the body temperature of the internal combustion engine 10.

[0063] It should be understood that a temperature sensor can be any sensor capable of sensing temperature and converting it into a usable output signal, such as a contact temperature sensor or a non-contact temperature sensor. By installing a temperature sensor on the first outlet pipe of the internal combustion engine, the engine body temperature can be collected in real time. Based on the engine body temperature, it can be determined whether excess heat should be conducted to the vehicle's air vents or alternator. It can also detect whether the engine body temperature is too high and requires cooling, thereby protecting the lifespan of the internal combustion engine.

[0064] Furthermore, considering that the internal combustion engine needs to be cooled when the temperature is too high, in this embodiment, such as Figure 2 As shown, the vehicle battery heating system further includes a cooling box 70; the opening of the cooling box 70 is connected to the internal combustion engine 10.

[0065] The cooling box 70 is used to cool the internal combustion engine 10 when the temperature is higher than the second preset temperature.

[0066] It should be understood that the cooling box can be a device used to cool the internal combustion engine, and it may include a cooling fan, blower, or fan combination, etc. The second preset temperature is the temperature at which the internal combustion engine's performance is affected when the engine body temperature is too high. For example, the average temperature of an internal combustion engine is generally 1000 degrees Celsius, so the second preset temperature can be set to 1000 degrees Celsius. When the internal combustion engine temperature is detected to be higher than the second preset temperature, the cooling box can be activated to cool the internal combustion engine, thereby protecting the engine's lifespan. The second preset temperature can also be adjusted higher or lower depending on the usage scenario; this embodiment does not impose any limitations on this.

[0067] Furthermore, considering the control of heat transfer to the vehicle's air vents, in this embodiment, such as Figure 2 As shown, the vehicle battery heating system also includes: a hydraulic reversing valve 80;

[0068] The inlet of the hydraulic reversing valve 80 is connected to the outlet of the cooling pipe 20, the first outlet of the hydraulic reversing valve 80 is connected to the inlet of the battery pack box 30 through the pipe of the cooling pipe 20, and the second outlet of the hydraulic reversing valve 80 is connected to the in-vehicle air vent 40 through the pipe of the cooling pipe 20.

[0069] The hydraulic reversing valve 80 is used to connect the cooling pipe 20 and the vehicle interior air outlet 40 when the internal combustion engine 10 temperature is higher than the third preset temperature, so as to transport the heat generated by the internal combustion engine 10 to the vehicle interior for heating through the vehicle interior air outlet 40.

[0070] It should be understood that a hydraulic directional valve is a directional control valve with two or more flow patterns and two or more oil ports, used to control the flow direction of liquid or gas inside the cooling coil, such as a rotary valve or a slide valve. The third preset temperature can be a temperature set when the battery pack temperature is sufficient and above a certain level. For example, the typical operating temperature of a battery is between -20 degrees Celsius and 60 degrees Celsius. When heating the battery, if the battery temperature is 60 degrees Celsius, the internal combustion engine temperature may be 400 degrees Celsius. The third preset temperature can be set to 400 degrees Celsius. When the internal combustion engine temperature is above 400 degrees Celsius, the hydraulic directional valve is controlled to open the cooling coil and the vehicle's air vents to transfer the heat generated by the internal combustion engine to the vehicle's interior for heating.

[0071] Furthermore, considering the impact of temperature changes on the control of the hydraulic directional valve and the cooling tank, in this embodiment, such as Figure 2 As shown, the vehicle battery heating system also includes: a temperature controller 90;

[0072] The input terminal of the temperature controller 90 is connected to the output terminal of the temperature sensor 60, and the first control terminal of the temperature controller 90 is connected to the input terminal of the hydraulic reversing valve 80.

[0073] The temperature controller 90 is used to output a reversing signal to the hydraulic reversing valve 80 when the internal combustion engine 10 temperature is higher than the third preset temperature, so as to control the hydraulic reversing valve 80 to open the pipe between the cooling pipe 20 and the vehicle air outlet 40.

[0074] It should be understood that the reversing signal is a signal output by the controller to control the reversing of the hydraulic reversing valve when the internal combustion engine temperature is higher than the third preset temperature. The temperature controller can be triggered and controlled according to the preset first, second, and third preset temperatures.

[0075] Furthermore, considering the cooling effect of the cooling box on the internal combustion engine, in this embodiment, the cooling box includes: a cooling fan; the second control terminal of the temperature controller 90 is connected to the input terminal of the cooling fan; the temperature controller 90 is used to output a drive signal to drive the cooling fan to cool the internal combustion engine when the temperature of the internal combustion engine 10 is higher than a second preset temperature.

[0076] It should be understood that the cooling fan is a fan used to cool the internal combustion engine. When the internal combustion engine temperature exceeds a second preset temperature, the temperature controller outputs a drive signal to activate the cooling fan, which then rotates to cool the internal combustion engine, thereby protecting it from high-temperature damage.

[0077] This embodiment proposes an on-board battery heating system, which includes an internal combustion engine and a cooling pipe. The first outlet of the internal combustion engine is connected to the inlet of the cooling pipe, and the outlet of the cooling pipe is connected to the inlet of the battery pack. The internal combustion engine generates heat when the ambient temperature is lower than a first preset temperature. The cooling pipe transports the heat generated by the internal combustion engine to the battery pack. Because this invention incorporates a small internal combustion engine inside the new energy vehicle, the heat generated by the engine supplies heat to the battery pack through the cooling pipe. This efficient use of the energy generated by the internal combustion engine solves the problem of poor battery heating in cold regions due to battery depletion, and avoids the situation where severe battery self-heating and depletion affect the driving performance of the new energy vehicle when the vehicle is in a low-temperature environment. This improves energy utilization and enhances the user experience. Furthermore, the cooling pipes are also connected to the vehicle's air vents, and the internal combustion engine is also connected to the generator; the on-board battery heating system also includes a temperature sensor, a cooling box, and a temperature controller; it can make reasonable use of the energy generated by the internal combustion engine for vehicle heating and battery charging, improving energy utilization, and controlling the fan to cool the internal combustion engine when the internal combustion engine temperature is too high, protecting the internal combustion engine from high temperature damage and improving the user experience.

[0078] refer to Figure 3 , Figure 3 This is a schematic diagram of the module function of the temperature controller in the second embodiment of the vehicle battery heating system of the present invention.

[0079] Based on the above embodiments, considering the accuracy of the temperature controller in controlling the hydraulic reversing valve and the cooling fan, in this embodiment, as follows: Figure 3 The temperature controller 90 shown includes a first switch module 91, a second switch module 92, and a trigger module 93;

[0080] The input terminal of the first switch module 91 is connected to the first terminal of the temperature sensor 60, the first signal reference terminal of the first switch module 91 is connected to the first output terminal of the trigger module 93, the switch control terminal of the first switch module 91 is connected to the hydraulic reversing valve 80, the ground terminal of the first switch module 91 is grounded, the first terminal of the temperature sensor 60 is connected to the external power supply voltage, the second terminal of the temperature sensor 60 is connected to the signal input terminal of the trigger module 93, the input terminal of the second switch module 92 is connected to the first terminal of the temperature sensor 60, the second signal reference terminal of the second switch module 92 is connected to the second output terminal of the trigger module 93, the switch control terminal of the second switch module 92 is connected to the cooling fan, the ground terminal of the second switch module 92 is grounded, and the ground terminal of the trigger module 93 is grounded.

[0081] The trigger module 93 is used to detect the temperature signal collected by the temperature sensor 60, and when the temperature signal reaches the first preset reference signal, generate a first switch signal and transmit the first switch signal to the first switch module 91;

[0082] The trigger module 93 is also used to detect the temperature signal collected by the temperature sensor 60, and when the temperature signal reaches the second preset reference signal, generate a second switch signal and transmit the second switch signal to the second switch module 92;

[0083] The first switch module 91 is used to generate a reversing signal and transmit the reversing signal to the hydraulic reversing valve 80 when it receives the first switch signal sent by the trigger module 93.

[0084] The second switch module is used to generate a drive signal and transmit the drive signal to the cooling fan when it receives the second switch signal sent by the trigger module 93.

[0085] The first switch module 91 is used to generate a reversing signal and transmit the reversing signal to the hydraulic reversing valve 80 when it receives the first switch signal sent by the trigger module 93.

[0086] The second switch module is used to generate a drive signal and transmit the drive signal to the cooling fan when it receives the second switch signal sent by the trigger module 93.

[0087] It should be understood that the temperature signal is the signal converted from the temperature collected by the temperature sensor. The first switching module is used to control the hydraulic directional valve to switch when the internal combustion engine temperature is higher than the third preset temperature. The second switching module is used to control the cooling fan drive when the internal combustion engine temperature is higher than the second preset temperature. The trigger module is used to detect whether the temperature has reached the preset temperature, and when the preset temperature is reached, to control the first or second switching module to switch on or off. The first preset reference signal is the reference signal corresponding to the detected third preset temperature. The second preset reference signal is the reference signal corresponding to the detected second preset temperature.

[0088] In the specific implementation, when the trigger module detects that the temperature signal collected by the temperature sensor has reached the third preset temperature, it generates a first switch signal and transmits it to the first switch module to control the hydraulic reversing valve to switch; when the trigger module detects that the temperature signal collected by the temperature sensor has reached the second preset temperature, it generates a second switch signal and transmits it to the second switch module to control the cooling fan to rotate.

[0089] Furthermore, considering the accuracy of the triggering temperature of the triggering module, in this embodiment, the triggering module includes: a first voltage regulator module, a second voltage regulator module, and a voltage divider module;

[0090] In this configuration, the first terminal of the voltage divider module is connected to the second terminal of the temperature sensor, the second terminal of the voltage divider module is grounded, the reference terminal of the first voltage regulator module is connected to the first terminal of the voltage divider module, the anode of the first voltage regulator module is connected to the second terminal of the voltage divider module, the cathode of the first voltage regulator module is connected to the first signal reference terminal of the first switch module, the reference terminal of the second voltage regulator module is connected to the first terminal of the voltage divider module, the anode of the second voltage regulator module is connected to the second terminal of the voltage divider module, and the cathode of the first voltage regulator module is connected to the second signal reference terminal of the second switch module.

[0091] The first voltage regulator module is used to compare the temperature signal collected by the temperature sensor with a first preset reference signal, and when the temperature signal reaches the first preset reference signal, generate a first switching signal and transmit the first switching signal to the first switching module;

[0092] The second voltage regulator module is used to compare the temperature signal collected by the temperature sensor with a second preset reference signal, and when the temperature signal reaches the second preset reference signal, generate a second switching signal and transmit the second switching signal to the second switching module.

[0093] It should be understood that the first voltage regulator module is used to detect the internal combustion engine temperature when it is higher than the third preset temperature and trigger a first switch signal to operate the first switch module. The second voltage regulator module is used to detect the internal combustion engine temperature when it is higher than the second preset temperature and trigger a second switch signal to operate the second switch module.

[0094] Furthermore, for ease of understanding, in this embodiment, the following is proposed: Figure 4 The circuit schematic shown is as follows. Figure 4 This is a circuit diagram of the temperature controller in the second embodiment of the vehicle battery heating system of the present invention. The first switching module includes a first resistor R1, a second resistor R2 and a first MOSFET Q1; the second switching module includes a third resistor R3, a fourth resistor R4 and a second MOSFET Q2; the first voltage regulator module includes a first Zener diode D1; the second voltage regulator module includes a first Zener diode D2; and the voltage divider module includes a fifth resistor R5.

[0095] The first end of the temperature sensor is connected to an external power supply voltage, the second end of the temperature sensor is connected to the first end of the fifth resistor, and the second end of the fifth resistor is grounded.

[0096] The first end of the first resistor is connected to the first end of the temperature sensor, the second end of the first resistor is connected to the cathode of the first Zener diode, the anode of the first Zener diode is grounded, the reference end of the first Zener diode is connected to the second end of the temperature sensor, the source of the first MOSFET is connected to the first end of the temperature sensor, the drain of the first MOSFET is connected to the hydraulic directional valve and the anode of the first Zener diode, the gate of the first MOSFET is connected to the second end of the first resistor, the first end of the second resistor is connected to the drain of the first MOSFET, and the second end of the second resistor is connected to the second end of the first resistor.

[0097] The first end of the third resistor is connected to the first end of the temperature sensor, the second end of the third resistor is connected to the cathode of the second Zener diode, the anode of the second Zener diode is grounded, the reference end of the second Zener diode is connected to the second end of the temperature sensor, the source of the second MOSFET is connected to the first end of the temperature sensor, the drain of the second MOSFET is connected to both the cooling fan and the anode of the second Zener diode, the gate of the second MOSFET is connected to the second end of the third resistor, the first end of the fourth resistor is connected to the drain of the second MOSFET, and the second end of the fourth resistor is connected to the second end of the third resistor.

[0098] It should be understood that the turn-on voltage values ​​of the first and second Zener diodes can be set and selected according to the signal voltages corresponding to the third and second preset temperatures, or can be set according to actual conditions. This embodiment does not impose any restrictions on this.

[0099] This embodiment uses a temperature controller. When the trigger module detects that the temperature signal collected by the temperature sensor has reached a third preset temperature, it generates a first switch signal and transmits it to the first switch module to control the hydraulic directional valve to switch. When the trigger module detects that the temperature signal collected by the temperature sensor has reached a second preset temperature, it generates a second switch signal and transmits it to the second switch module to control the cooling fan to rotate. This automatically controls the operation of the hydraulic directional valve and the cooling fan when the preset temperature is reached, improving the user experience.

[0100] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0101] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A vehicle-mounted battery heating system, characterized in that, The on-board battery heating system includes: an internal combustion engine and cooling pipes; The first outlet of the internal combustion engine is connected to the inlet of the cooling coil, and the outlet of the cooling coil is connected to the inlet of the battery pack box. The internal combustion engine is used to generate heat when the ambient temperature is lower than a first preset temperature; The cooling pipes are used to transfer the heat generated by the internal combustion engine to the battery pack box; The cooling pipe is also connected to the air vent inside the vehicle and is used to transfer the heat generated by the internal combustion engine to the vehicle interior through the air vent inside the vehicle. The internal combustion engine is also connected to a generator; the internal combustion engine is also used to output the generated heat to the generator so that the generator generates electrical energy and transmits the electrical energy to the battery pack for charging. The vehicle battery heating system further includes: a temperature sensor; the temperature sensor is disposed on the first outlet pipe of the internal combustion engine; the temperature sensor is used to collect the engine body temperature of the internal combustion engine; The vehicle battery heating system further includes: a cooling box; the opening of the cooling box is connected to the internal combustion engine; the cooling box is used to cool the internal combustion engine when the internal combustion engine temperature is higher than a second preset temperature; The on-board battery heating system also includes: a hydraulic reversing valve; The inlet of the hydraulic reversing valve is connected to the outlet of the cooling coil, the first outlet of the hydraulic reversing valve is connected to the inlet of the battery pack box through the cooling coil, and the second outlet of the hydraulic reversing valve is connected to the vehicle air vent through the cooling coil. The hydraulic reversing valve is used to connect the cooling pipe and the air outlet in the vehicle when the internal combustion engine temperature is higher than the third preset temperature, so as to transfer the heat generated by the internal combustion engine to the vehicle interior for heating through the air outlet in the vehicle interior. The on-board battery heating system also includes: a temperature controller; The input terminal of the temperature controller is connected to the output terminal of the temperature sensor, and the first control terminal of the temperature controller is connected to the input terminal of the hydraulic directional valve. The temperature controller is used to output a reversing signal to the hydraulic reversing valve when the internal combustion engine temperature is higher than a third preset temperature, so as to control the hydraulic reversing valve to open the pipe between the cooling coil and the air outlet in the vehicle. The cooling box includes: a heat dissipation fan; The second control terminal of the temperature controller is connected to the input terminal of the cooling fan; The temperature controller is used to output a drive signal to drive the cooling fan to cool the internal combustion engine when the internal combustion engine temperature is higher than the second preset temperature. The temperature controller includes a first switch module, a second switch module, and a trigger module; The input terminal of the first switch module is connected to the first terminal of the temperature sensor, the first signal reference terminal of the first switch module is connected to the first output terminal of the trigger module, the switch control terminal of the first switch module is connected to the hydraulic reversing valve, the ground terminal of the first switch module is grounded, the first terminal of the temperature sensor is connected to the external power supply voltage, the second terminal of the temperature sensor is connected to the signal input terminal of the trigger module, the input terminal of the second switch module is connected to the first terminal of the temperature sensor, the second signal reference terminal of the second switch module is connected to the second output terminal of the trigger module, the switch control terminal of the second switch module is connected to the cooling fan, the ground terminal of the second switch module is grounded, and the ground terminal of the trigger module is grounded. The triggering module is used to detect the temperature signal collected by the temperature sensor, and when the temperature signal reaches a first preset reference signal, generate a first switch signal and transmit the first switch signal to the first switch module. The triggering module is also used to detect the temperature signal collected by the temperature sensor, and when the temperature signal reaches the second preset reference signal, generate a second switch signal and transmit the second switch signal to the second switch module; The first switching module is used to generate a reversing signal and transmit the reversing signal to the hydraulic reversing valve when it receives the first switching signal sent by the triggering module. The second switch module is used to generate a drive signal and transmit the drive signal to the cooling fan when it receives the second switch signal sent by the trigger module.

2. The vehicle-mounted battery heating system as described in claim 1, characterized in that, The triggering module includes: a first voltage regulator module, a second voltage regulator module, and a voltage divider module; In this configuration, the first terminal of the voltage divider module is connected to the second terminal of the temperature sensor, the second terminal of the voltage divider module is grounded, the reference terminal of the first voltage regulator module is connected to the first terminal of the voltage divider module, the anode of the first voltage regulator module is connected to the second terminal of the voltage divider module, the cathode of the first voltage regulator module is connected to the first signal reference terminal of the first switch module, the reference terminal of the second voltage regulator module is connected to the first terminal of the voltage divider module, the anode of the second voltage regulator module is connected to the second terminal of the voltage divider module, and the cathode of the first voltage regulator module is connected to the second signal reference terminal of the second switch module. The first voltage regulator module is used to compare the temperature signal collected by the temperature sensor with a first preset reference signal, and when the temperature signal reaches the first preset reference signal, generate a first switching signal and transmit the first switching signal to the first switching module; The second voltage regulator module is used to compare the temperature signal collected by the temperature sensor with a second preset reference signal, and when the temperature signal reaches the second preset reference signal, generate a second switching signal and transmit the second switching signal to the second switching module.

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