Vehicle front-end heat dissipation module and vehicle

Abstract

The invention discloses a vehicle front-end heat dissipation module and a vehicle. The vehicle front-end heat dissipation module comprises a heat dissipation unit, a heat dissipation control unit, a first waterproof sealing unit, a second waterproof sealing unit and an auxiliary heat dissipation unit. The heat dissipation unit and the heat dissipation control unit are separated and independently arranged, the heat dissipation unit is connected with the heat dissipation control unit, the heat dissipation control unit is used for controlling the heat dissipation unit to work, and the heat dissipation unit is used for dissipating heat for a specified load; the first waterproof sealing unit is used for waterproofing and sealing of the heat dissipation unit; the second waterproof sealing unit is used for waterproofing and sealing of the heat dissipation control unit; the auxiliary heat dissipation unit is used for heat dissipation of the heat dissipation control unit.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of vehicle technology, and in particular to a front-end heat dissipation module for a vehicle and a vehicle. Background Art

[0002] The automotive front-end cooling module is an important component of the vehicle cooling system and is widely used in the cooling of batteries, motors and cabins of new energy vehicles. The cooling fan and motor assembly in the automotive front-end cooling module include several core components such as fan blades, fan frames and DC brushless motors.

[0003] The current conventional solution is to highly integrate the above core components and the motor drive controller. Although it is small in size and highly integrated, it also brings some problems. For example, the sealing solution is limited, and the sealing is prone to failure after long-term use, which in turn leads to water ingress failure. In addition, in order to enhance the waterproof seal, the heat dissipation performance is sacrificed, resulting in poor heat dissipation performance of the controller, which is prone to high-temperature failure. The high-temperature performance requirements of the controller and its components are relatively high. Sealing failure and high-temperature failure are also the main failure modes of this type of product. Summary of the invention

[0004] The present invention provides a front-end heat dissipation module for a vehicle and a vehicle, so as to achieve the purpose of at least one defect existing in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a front-end heat dissipation module for a vehicle, comprising: a heat dissipation unit, a heat dissipation control unit, a first waterproof sealing unit, a second waterproof sealing unit, and an auxiliary heat dissipation unit;

[0006] The heat dissipation unit is separated from the heat dissipation control unit and is independently arranged. The heat dissipation unit is connected to the heat dissipation control unit. The heat dissipation control unit is used to control the operation of the heat dissipation unit. The heat dissipation unit is used to dissipate heat for a specified load.

[0007] The first waterproof sealing unit is used for waterproofing and sealing the heat dissipation unit;

[0008] The second waterproof sealing unit is used for waterproofing and sealing the heat dissipation control unit;

[0009] The auxiliary heat dissipation unit is used for dissipating heat of the heat dissipation control unit.

[0010] Optionally, the heat dissipation unit includes a plurality of heat dissipation fans and a plurality of heat dissipation fan motors;

[0011] The heat dissipation fan is mechanically connected to the heat dissipation fan motor, and the heat dissipation fan motor is electrically connected to the heat dissipation control unit.

[0012] Optionally, the heat dissipation control unit includes a control board and a motor drive board;

[0013] The control board is connected to the motor drive board and the vehicle thermal manager respectively, and the motor drive board is electrically connected to the cooling fan motor;

[0014] The motor drive board is used to drive the cooling fan motor, and the control board is used to control the action of the cooling fan motor according to the instruction sent by the vehicle thermal manager.

[0015] Optionally, the motor drive board communicates with the vehicle thermal manager using a CAN protocol or a SENT protocol.

[0016] Optionally, it further includes a temperature sensor, wherein the temperature sensor is connected to the control board;

[0017] The temperature sensor is used to measure the temperature corresponding to the specified load, and the control board is also used to control the action of the cooling fan based on the measurement value of the temperature sensor.

[0018] Optionally, the cooling fan motor adopts a brushless DC motor.

[0019] Optionally, the brushless DC motor is connected to the heat dissipation control unit via a three-phase line.

[0020] Optionally, the designated load includes a water tank.

[0021] Optionally, the auxiliary heat dissipation unit includes a heat sink.

[0022] In a second aspect, an embodiment of the present invention further provides a vehicle, comprising any one of the vehicle front-end heat dissipation modules described in the embodiments of the present invention.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention proposes a front-end heat dissipation module for a vehicle, which includes a heat dissipation unit and a heat dissipation control unit which are separately arranged, and the heat dissipation unit and the heat dissipation control unit are respectively sealed for waterproofing, which can improve the heat dissipation performance of the heat dissipation module and the heat dissipation control unit while ensuring the water sealing performance. Since the heat dissipation control unit itself will also generate heat when working, therefore, the heat dissipation module and the heat dissipation control unit are separately arranged, which can avoid mutual interference between the heat dissipation of the two and avoid the problem of heat dissipation failure. On this basis, the sealing level can be improved, and the problem of sealing failure can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural block diagram of a front-end heat dissipation module for a vehicle in an embodiment;

[0025] Figure 2 is a structural block diagram of another vehicle front end heat dissipation module in an embodiment;

[0026] Figure 3 Schematic diagram of the structure of the front-end heat dissipation module for vehicles in the embodiment

[0027] Figure 4 2 is a schematic structural diagram of a front-end heat dissipation module for a vehicle from another perspective in an embodiment. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] Embodiment 1

[0030] Figure 1 is a structural block diagram of a front-end cooling module for a vehicle in an embodiment, refer to Figure 1 The vehicle front-end heat dissipation module includes: a heat dissipation unit 100, a heat dissipation control unit 200, a first waterproof sealing unit 300, a second waterproof sealing unit 400, and an auxiliary heat dissipation unit 500;

[0031] The heat dissipation unit 100 is separated from the heat dissipation control unit 200 and is independently arranged. The heat dissipation unit 100 is connected to the heat dissipation control unit 200. The heat dissipation control unit 200 is used to control the operation of the heat dissipation unit 100. The heat dissipation unit 100 is used to dissipate heat for a specified load.

[0032] The first waterproof sealing unit 300 is used for waterproofing and sealing the heat dissipation unit 100;

[0033] The second waterproof sealing unit 400 is used for waterproofing and sealing the heat dissipation control unit 200;

[0034] The auxiliary heat dissipation unit 500 is used to dissipate heat of the heat dissipation control unit 200 .

[0035] Exemplarily, in this solution, the heat dissipation unit 100 may include a fan, which may be used to blow (cold) air through a specified load so that the heat of the load is quickly dissipated into the air;

[0036] For example, when the temperature of a car engine rises, the coolant temperature rises accordingly, and the fan speeds up to quickly take away the heat of the coolant, thereby lowering the coolant temperature and ensuring that the engine runs within an appropriate temperature range.

[0037] Exemplarily, in this solution, the heat dissipation control unit 200 may integrate components such as a temperature sensor, a current sensor, and a PWM controller;

[0038] Temperature sensors are installed at key locations of specified loads (such as engines, electronic control units, etc.) to monitor load temperature in real time;

[0039] The current sensor is used to monitor the working current of the cooling fan in order to determine whether the working status of the fan is normal;

[0040] The PWM controller accurately controls the speed of the cooling fan according to the instructions of the microprocessor. The microprocessor uses intelligent control algorithms, such as fuzzy logic control algorithms, to dynamically adjust the output signal of the PWM controller according to the data fed back by the temperature sensor and the current sensor, thereby controlling the speed of the cooling fan.

[0041] For example, when the engine temperature gradually increases and the cooling fan operating current is normal, the microprocessor gradually increases the duty cycle of the PWM controller to increase the cooling fan speed;

[0042] When the engine temperature drops and the cooling fan operating current is too large, the microprocessor reduces the duty cycle of the PWM controller, reduces the fan speed, and checks whether the fan is faulty.

[0043] Exemplarily, in this solution, the first waterproof sealing unit 300 is mainly used for waterproof sealing of the heat dissipation unit 100, and the second waterproof sealing unit 300 may include a rubber sealing ring, a waterproof breathable valve, etc.;

[0044] Among them, the rubber sealing ring can be used to achieve waterproof sealing at the gaps in the connection parts of the heat dissipation unit 100, and the waterproof breathable valve can be used to achieve waterproof sealing at the air inlet, air outlet and other positions of the heat dissipation unit 100. The waterproof breathable valve can prevent dust, water, etc. from entering the interior of the heat dissipation unit 100, while ensuring that the air pressure inside and outside the heat dissipation unit 100 is stable and does not affect the heat dissipation efficiency.

[0045] Exemplarily, in this solution, the second waterproof sealing unit 400 provides waterproof sealing protection for the heat dissipation control unit 200;

[0046] The second waterproof sealing unit 400 may include a waterproof sealing box, the heat dissipation control unit 200 may be disposed in the waterproof sealing box, and a rubber sealing pad may be disposed at the opening of the waterproof sealing box, and the rubber sealing pad can effectively prevent moisture and dust from entering the interior of the box body;

[0047] The waterproof sealing box may also be provided with a waterproof connector, which is used to connect the cables outside the heat dissipation control unit 200. The waterproof connector adopts a threaded connection method and is equipped with a rubber sealing ring to further improve the waterproof performance.

[0048] Exemplarily, in this solution, the auxiliary heat dissipation unit 500 is used to solve the heat dissipation problem of the heat dissipation control unit 200, and the auxiliary heat dissipation unit 500 may include a small heat sink and a small fan;

[0049] The heat sink is in close contact with the heat dissipation control unit 200 to conduct the heat out, and the small fan is used to blow away the heat on the surface of the heat sink to accelerate the heat dissipation of the heat dissipation control unit 200.

[0050] The present embodiment proposes a vehicle front-end heat dissipation module, which includes a heat dissipation unit and a heat dissipation control unit which are separately arranged. The heat dissipation unit and the heat dissipation control unit are respectively sealed for waterproofing, so that the heat dissipation performance of the heat dissipation module and the heat dissipation control unit can be improved while ensuring the water sealing performance. Since the heat dissipation control unit itself will also generate heat when working, the heat dissipation module and the heat dissipation control unit are separated, so that mutual interference between the heat dissipation of the two can be avoided, and the problem of heat dissipation failure can be avoided. On this basis, the sealing level can be improved, and the problem of sealing failure can be avoided.

[0051] In this solution, through the separate design and collaborative work of the heat dissipation unit and the heat dissipation control unit, precise heat dissipation control can be achieved according to the actual heat dissipation needs of key components of the car. For example, under different driving conditions and ambient temperatures, the heat dissipation control unit can accurately adjust the speed of the heat dissipation fan of the heat dissipation unit to control the engine temperature within the set temperature range. In addition, the auxiliary heat dissipation unit provides an effective heat dissipation solution for the heat dissipation control unit to ensure that electronic components such as microprocessors operate within a suitable temperature range. This not only improves the control accuracy and response speed of the heat dissipation control unit, but also further enhances the reliability and stability of the entire heat dissipation module, ensuring the safe driving of the car. Individually controlling the temperature of the heat dissipation control unit within a certain temperature range can improve the working efficiency and reliability of key components of the car.

[0052] exist Figure 1 Based on the scheme shown, in one possible implementation scheme, the heat dissipation unit includes a plurality of heat dissipation fans and a plurality of heat dissipation fan motors;

[0053] The cooling fan is mechanically connected to the cooling fan motor, and the cooling fan motor is electrically connected to the cooling control unit.

[0054] Exemplarily, in this solution, a heat dissipation control unit can be used to control the operation of multiple heat dissipation fans, thereby saving controller resources and reducing costs.

[0055] Exemplarily, in this solution, each cooling fan is mechanically connected to an independent cooling fan motor, and the cooling fan motor is electrically connected to the cooling control unit via a shielded cable to ensure the stability and anti-interference of signal transmission.

[0056] Exemplarily, in this solution, after the heat dissipation control unit receives the temperature sensor feedback signal of the key components of the automobile (such as the engine, the electronic control unit, etc.), it sends a control signal to the heat dissipation fan motor according to the preset heat dissipation strategy;

[0057] For example, if the temperature of the cylinder area on the left side of the engine exceeds the standard, the cooling control unit will increase the speed of the corresponding cooling fan motor on the left side by 30%, while the speeds of the other two cooling fan motors remain unchanged or are fine-tuned according to the overall cooling requirements, thereby ensuring that the engine temperature is always within a safe range.

[0058] Based on the above solution that the heat dissipation unit includes a heat dissipation fan and a heat dissipation fan motor, in one possible implementation scheme, the heat dissipation control unit includes a control board and a motor drive board;

[0059] The control board is respectively connected to the motor drive board and the vehicle thermal manager, and the drive board is electrically connected to the cooling fan motor;

[0060] The motor driver board is used to drive the cooling fan motor, and the control board is used to control the cooling fan motor according to the instructions sent by the vehicle thermal manager.

[0061] Exemplarily, in this solution, the vehicle thermal manager is used for the thermal management system inside the vehicle, which may include a central processing unit, a temperature sensor network, a heat dissipation execution unit, a heat exchanger unit, and an energy recovery unit, etc.

[0062] Exemplarily, in this solution, the vehicle thermal manager can be tightly integrated with the vehicle's engine management system, battery management system, air conditioning system, etc.;

[0063] When integrated with the engine management system, the thermal manager receives information such as engine speed, load, coolant temperature, etc., and at the same time feeds back cooling demand information to the engine management system so that the engine management system can adjust the engine's operating parameters, such as ignition advance angle, fuel injection amount, etc., to achieve a balance between engine performance and cooling requirements.

[0064] Exemplarily, in this solution, the control board can work in a passive mode. In the passive mode, the control board controls the action of the cooling fan motor according to the instructions sent by the vehicle thermal manager.

[0065] Exemplarily, in this solution, the heat dissipation control unit includes a control board and a motor drive board. The control board is a core control component, which can be connected to the motor drive board and the vehicle thermal manager through a CAN bus or Ethernet interface.

[0066] Exemplarily, in this solution, the motor drive board may include a power amplifier circuit, a current detection circuit and a protection circuit. The power amplifier circuit uses a MOSFET or IGBT power module, which can output sufficient current and voltage to drive the cooling fan motor according to the command of the control board;

[0067] The current detection circuit monitors the working current of the cooling fan motor in real time and feeds the current signal back to the control board so that the control board can determine whether the working status of the motor is normal;

[0068] The protection circuit protects the motor drive board and cooling fan motor from abnormal conditions such as overcurrent, overvoltage, and overheating.

[0069] Exemplarily, in this solution, when the vehicle thermal manager determines that the speed of the cooling fan motor needs to be adjusted based on the temperature sensor data of each heating component of the vehicle, it sends a control instruction to the control board of the cooling control unit through the CAN bus or Ethernet interface;

[0070] After receiving the command, the control board analyzes and processes the command according to the preset control algorithm and calculates the corresponding PWM (pulse width modulation) signal duty cycle. Then, the control board sends the generated PWM signal to the power amplifier circuit of the motor drive board;

[0071] The power amplifier circuit of the motor drive board adjusts the voltage and current output to the cooling fan motor according to the received PWM signal, thereby changing the speed of the cooling fan motor.

[0072] Based on the above-mentioned solution that the heat dissipation control unit includes a control board and a motor drive board, in one possible implementation scheme, the motor drive board communicates with the vehicle thermal manager using the CAN protocol or the SENT protocol.

[0073] Exemplarily, in this solution, when the motor drive board uses the CAN protocol to communicate with the vehicle thermal manager, the motor drive board may integrate a CAN controller and a CAN transceiver;

[0074] The motor driver board and the vehicle thermal manager exchange various information through the CAN bus. For example, the vehicle thermal manager sends the target speed command of the cooling fan motor, the working mode switching command (such as passive mode, active mode, etc.) and the fault diagnosis request command to the motor driver board;

[0075] The motor driver board feeds back the current speed, operating current, fault code and other information of the cooling fan motor to the vehicle thermal manager.

[0076] Exemplarily, in this solution, when the motor drive board uses the SENT protocol to communicate with the vehicle thermal manager, the motor drive board can be configured with a SENT communication interface circuit;

[0077] As the data sender, the motor driver board sends the relevant data of the cooling fan motor to the vehicle thermal manager according to the specifications of the SENT protocol;

[0078] When the vehicle thermal manager sends a command to the motor driver board, it can first send the command to the control board, and the control board then adjusts the working parameters of the motor driver board or triggers the data transmission of the motor driver board according to the command.

[0079] Based on the above solution that the heat dissipation control unit includes a control board and a motor drive board, in one possible implementation scheme, it further includes a temperature sensor, and the temperature sensor is connected to the control board;

[0080] The temperature sensor is used to measure the temperature corresponding to the specified load, and the control board is also used to control the cooling fan action based on the measurement value of the temperature sensor.

[0081] Exemplarily, in this solution, the control board can work in an active mode. In the active mode, the control board controls the operation of the cooling fan based on the measurement value of the temperature sensor.

[0082] Exemplarily, in this solution, temperature sensors may be installed at key locations such as the cylinder block and cylinder head of the automobile engine, depending on the type and distribution of the specified load;

[0083] The temperature sensor is connected to the control board through a shielded cable, and the connection line adopts differential signal transmission to effectively reduce the impact of electromagnetic interference on the temperature signal;

[0084] When the specified load temperature measured by the temperature sensor rises, the control board will output a larger control signal, quickly increasing the speed of the cooling fan motor through the motor driver board to enhance the cooling effect.

[0085] Based on the above solution that the heat dissipation unit includes a heat dissipation fan and a heat dissipation fan motor, the heat dissipation fan motor adopts a DC brushless motor, and the DC brushless motor is connected to the heat dissipation control unit through a three-phase line.

[0086] Exemplarily, in this solution, a motor rotor position detection circuit may be integrated inside the motor drive board, and the position and speed of the motor rotor may be determined by the motor rotor position detection circuit to achieve phase switching and speed control of the motor;

[0087] The control board adjusts the output voltage and frequency of the motor drive board through external control signals or sensor signals, thereby achieving precise control of the speed of the brushless DC motor.

[0088] Based on any of the foregoing schemes, in one possible implementation scheme, the designated load includes a water tank.

[0089] Based on any of the foregoing solutions, in one possible implementation manner, the auxiliary heat dissipation unit includes a heat sink.

[0090] Figure 2 is another structural block diagram of a front-end cooling module for a vehicle in an embodiment, refer to Figure 2 Based on any of the above solutions, in one possible implementation scheme, the vehicle front-end heat dissipation module includes:

[0091] Heat dissipation unit, heat dissipation control unit, first waterproof sealing unit, second waterproof sealing unit, auxiliary heat dissipation unit;

[0092] The heat dissipation unit includes a heat dissipation fan and motor assembly (heat dissipation fan motor) 1, a heat dissipation fan and motor assembly 2, and a heat dissipation fan and motor assembly 3. The heat dissipation control unit includes a motor drive controller, and the motor drive controller includes a control board and a motor drive board.

[0093] The motor drive board is connected to the cooling fan and the motor assembly through a three-phase line, and the control board is connected to the vehicle thermal manager through the CAN and SENT interfaces;

[0094] The first waterproof sealing unit is used for waterproofing and sealing the heat dissipation unit, the second waterproof sealing unit is used for waterproofing and sealing the heat dissipation control unit, and the auxiliary heat dissipation unit is used for heat dissipation of the heat dissipation control unit.

[0095] Figure 3 is a schematic structural diagram of a front-end heat dissipation module for a vehicle in an embodiment, Figure 4 is another perspective of the front-end heat dissipation module structure diagram of the embodiment, refer to Figure 3 and Figure 4 ,In this solution, the cooling fan and motor assembly includes fan blades, a fan frame, and a brushless DC motor. The brushless DC motor leads a three-phase line 202 to the motor drive board 201;

[0096] The cooling fan drive motor is separated from the motor drive board 201, which is a power drive module controlled by the control board. The motor drive controller (motor drive board 201) is externally mounted on the mechanical structure body of the front end cooling module.

[0097] In this solution, the motor drive controller is not integrated with the cooling fan and the motor assembly, and a more reliable and effective heat dissipation and sealing solution is adopted.

[0098] In this solution, the motor drive board adopts a power drive module and is controlled by the control board. The control board receives external control signals or instructions and further controls the motor drive board. The cooling fan can dynamically adjust the speed and perform power regulation control.

[0099] In this solution, the control board can work in active control mode, controlling the operation of the cooling fan according to the water inlet temperature and water outlet temperature of the water tank; or work in passive mode, receiving and working according to the instructions of the vehicle thermal manager.

[0100] In this solution, the motor drive controller is equipped with a heat sink 2011, which is arranged on the surface of the motor drive controller. The heat sink fan and the heat sink fan in the motor assembly are also used to blow away the heat on the surface of the heat sink, thereby dissipating the heat of the motor drive controller.

[0101] This embodiment provides a vehicle, including any one of the vehicle front end heat dissipation modules recorded in the first embodiment. The implementation method and beneficial effects of the vehicle front end heat dissipation module are the same as the corresponding contents recorded in the first embodiment, and the specific contents are not repeated here.

[0102] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A front-end heat dissipation module for a vehicle, characterized in that: include: Heat dissipation unit, heat dissipation control unit, first waterproof sealing unit, second waterproof sealing unit, auxiliary heat dissipation unit; The heat dissipation unit is separated from the heat dissipation control unit and is independently arranged. The heat dissipation unit is connected to the heat dissipation control unit. The heat dissipation control unit is used to control the operation of the heat dissipation unit. The heat dissipation unit is used to dissipate heat for a specified load. The first waterproof sealing unit is used for waterproofing and sealing the heat dissipation unit; The second waterproof sealing unit is used for waterproofing and sealing the heat dissipation control unit; The auxiliary heat dissipation unit is used for dissipating heat of the heat dissipation control unit.

2. The front end heat dissipation module for a vehicle according to claim 1, characterized in that: The heat dissipation unit includes a plurality of heat dissipation fans and a plurality of heat dissipation fan motors; The heat dissipation fan is mechanically connected to the heat dissipation fan motor, and the heat dissipation fan motor is electrically connected to the heat dissipation control unit.

3. The front end heat dissipation module for a vehicle according to claim 2, characterized in that: The heat dissipation control unit includes a control board and a motor drive board; The control board is connected to the motor drive board and the vehicle thermal manager respectively, and the motor drive board is electrically connected to the cooling fan motor; The motor drive board is used to drive the cooling fan motor, and the control board is used to control the action of the cooling fan motor according to the instruction sent by the vehicle thermal manager.

4. The front end heat dissipation module for a vehicle as claimed in claim 3, characterized in that: The motor drive board communicates with the vehicle thermal manager using the CAN protocol or the SENT protocol.

5. The front end heat dissipation module for a vehicle as claimed in claim 3, characterized in that: Also includes a temperature sensor, the temperature sensor is connected to the control board; The temperature sensor is used to measure the temperature corresponding to the specified load, and the control board is also used to control the action of the cooling fan based on the measurement value of the temperature sensor.

6. The front end heat dissipation module for a vehicle as claimed in claim 2, characterized in that: The heat dissipation fan motor adopts a brushless DC motor.

7. The front end heat dissipation module for a vehicle according to claim 6, characterized in that: The brushless DC motor is connected to the heat dissipation control unit via a three-phase line.

8. The front end heat dissipation module for a vehicle according to claim 1, characterized in that: The designated load includes a water tank.

9. The front end heat dissipation module for a vehicle according to claim 1, characterized in that: The auxiliary heat dissipation unit includes a heat sink.

10. A vehicle, characterized in that: The vehicle front end heat dissipation module comprises the vehicle front end heat dissipation module according to any one of claims 1 to 9.

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