Ventilation waterproof device and method for water cooling unit of electric vehicle

Abstract

The invention discloses a ventilation and waterproof device and method for a water cooling unit of an electric vehicle, and belongs to the technical field of protection of water cooling units of electric vehicles. The execution device comprises a fixing module and a ventilation waterproof module, the fixing module is connected with the ventilation waterproof module and used for connecting the ventilation waterproof module to the water chilling unit, and the ventilation waterproof module comprises a swing guide vane and a driving mechanism; the control module is connected with the driving mechanism and used for controlling operation of the driving mechanism, the driving mechanism is connected with the end, close to one end of the fixing module, of the swing guide vane and used for driving the swing guide vane to rotate around the end, close to one end of the fixing module, and the multiple swing guide vanes are kept parallel all the time when driven to rotate; by adding the swinging guide vane, the angle can be selected according to the environment, normal heat dissipation can be guaranteed, it can be guaranteed that internal electric devices cannot lose efficacy due to excessive rainwater, sludge and dust, and the reliability of the internal electric devices is improved.

Description

Technical Field

[0001] The invention relates to a ventilation and waterproof device and method for a water cooling unit of an electric vehicle, belonging to the technical field of protection of water cooling units of electric vehicles. Background Art

[0002] In recent years, the automobile industry has developed rapidly. As a result, traditional fuel vehicles burning fossil fuels have caused carbon dioxide emissions. Commercial trucks are one of the key factors causing the above problems, which has also greatly accelerated the transformation and upgrading of commercial truck energy power systems.

[0003] Unlike traditional trucks, pure electric trucks are powered entirely by power batteries, so the performance of the power batteries directly determines the power of the truck, and the operating temperature of the battery will directly affect its performance. In a high-temperature working environment, the charging and discharging efficiency of the power battery will be greatly reduced, and it will also cause thermal runaway of the battery, posing a great threat to the life safety of the driver and passengers. In addition, the power battery capacity of a pure electric truck is much larger than that of a general electric passenger car, and special attention should be paid to the thermal management system of the battery. The water-cooling unit is the most important part of the battery thermal management system. The electronic components and condensers inside the water-cooling unit are prone to sewage and dust failure when washing the vehicle or when it rains, affecting the normal operation of the water-cooling unit. The fully enclosed structure will cause the water-cooling unit to be unable to inhale enough ventilation to complete the heat dissipation process. There is still no technology in the prior art that can solve both ventilation and waterproofing problems at the same time. Summary of the invention

[0004] The object of the present invention is to provide a ventilation and waterproof device and method for a water-cooling unit of an electric vehicle, so as to solve the defect that the ventilation problem and the waterproof problem cannot be solved simultaneously in the prior art.

[0005] To achieve the above objectives, the present invention is implemented by adopting the following technical solutions: In a first aspect, the present invention provides a ventilation and waterproof device for a water-cooling unit of an electric vehicle, comprising a control module and an execution device; The execution device includes a fixing module and a ventilation and waterproof module, wherein the fixing module is connected to the ventilation and waterproof module and is used to connect the ventilation and waterproof module to the water cooling unit, and the ventilation and waterproof module includes a swing guide vane and a driving mechanism; The control module is connected to the driving mechanism for controlling the operation of the driving mechanism. The driving mechanism is connected to the end of the swing guide vane close to one end of the fixed module for driving the swing guide vane to rotate around the end close to one end of the fixed module. There are multiple swing guide vanes, and all the swing guide vanes remain parallel at all times when they are driven to rotate.

[0006] Furthermore, the fixed module includes a fixed plate, a base mounting plate, a fixed guide plate and a rib plate; the fixed guide plate is fixed on the side of the base mounting plate facing the water cooling unit, the rib plate fixes the fixed guide plate and the base mounting plate together, the fixed plate is fixed on the side of the base mounting plate facing away from the water cooling unit, and the swing guide vane is connected to the fixed plate.

[0007] Furthermore, the fixing plate is provided with a plurality of circular mounting holes, and the number of the circular mounting holes is the same as the number of the swing guide vanes.

[0008] Furthermore, a through hole is provided at the end of the swing guide vane near one end of the fixed module, and the ventilation and waterproof module also includes a straight rod inserted in the through hole, and the straight rod and the swing guide vane are fixedly connected, and one end of the straight rod inserted into the through hole is inserted into the mounting circular hole.

[0009] Furthermore, the driving mechanism includes a sprocket, a transmission chain and a motor, the sprocket is fixedly connected to one end of the straight rod, the sprocket is provided with a plurality of sprockets and the number is the same as the number of the swing guide vanes, the transmission chain is sleeved on the sprocket, the motor is connected to one of the sprockets and is used to drive the motor to rotate, thereby driving the other sprockets to rotate through the transmission chain, thereby driving the straight rod to rotate, and then driving the swing guide vanes to rotate; The control module is connected to the motor.

[0010] Furthermore, the end of the swing guide vane close to one end of the fixed module is provided with protrusions on both sides, and the protrusion on one side is inserted into the mounting circular hole.

[0011] Further, the driving mechanism includes a sprocket, a transmission chain and a motor, the sprocket is fixedly connected to the protrusion not inserted in the mounting circular hole, the sprocket is provided with a plurality of sprockets and the number is the same as the number of the swing guide vanes, the transmission chain is sleeved on the sprocket, the motor is connected to one of the sprockets and is used to drive the motor to rotate, thereby driving the other sprockets to rotate through the transmission chain, thereby driving the protrusion connected to the sprocket to rotate, and then driving the swing guide vanes to rotate; The control module is connected to the motor.

[0012] In a second aspect, the present invention provides a ventilation and waterproofing method for a water cooling unit of an electric vehicle, comprising: Get the wind speed and rainfall of the environment where the water cooling unit is currently located; Based on the wind speed and the rainfall, a CFD method is used to calculate the air intake and water intake of the water-cooled unit when the swing guide vanes are at different angles; Based on the calculated groups of air inlet and water inlet, a combination that meets the preset air inlet standard and the preset water inlet standard is selected, so as to obtain the optimal angle of the swing guide vane corresponding to the combination; The motor is controlled to rotate the swing guide vane to the optimal angle.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are: The present invention provides a ventilation and waterproofing device and method for an electric vehicle water-cooling unit. By adding a swinging guide vane, different angles of the swinging guide vane can be set, and the state can be freely selected according to the environment in which the vehicle is located. This can ensure that the water-cooling unit dissipates heat for the battery normally and keeps the battery within the normal operating temperature range, and can also ensure that the electrical components inside the water-cooling unit will not fail due to excessive rain, sludge and dust, thereby improving its reliability. The device and method are simple in principle and easy to operate, and can greatly improve the reliability of the water-cooling unit and the environmental adaptability of new energy trucks. The air intake and waterproofing effect of the water-cooling unit with the swinging guide vane in different states are analyzed by means of CFD. By adjusting the state of the swinging guide vane, not only can the air intake of the water-cooling unit be guaranteed to meet the heat dissipation requirements of the battery, but rain, sludge, etc. can also be effectively blocked from entering the water-cooling unit, thereby improving its reliability, reducing the cost of using the vehicle for customers, and enhancing the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a ventilation and waterproof device for a water cooling unit of an electric vehicle provided by an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a ventilation and waterproof device for a water-cooling unit of an electric vehicle provided by an embodiment of the present invention installed on a water-cooling unit; Figure 3 is a schematic diagram of the connection structure between the swing guide vane and the sprocket provided in an embodiment of the present invention; Figure 4 is a graph showing the change trend of the air inlet volume of a water-cooled unit under different swinging guide vane states provided by an embodiment of the present invention; Figure 5 This is a simulation diagram of the waterproof effect of the swing guide vane provided by an embodiment of the present invention in state 3 (the angle with the base mounting plate is 30°); Figure 6 This is a simulation diagram of the waterproof effect of the swing guide vane provided by an embodiment of the present invention in state 1 (the angle with the base mounting plate is 90 degrees).

[0015] In the figure: 1. actuator; 2. control module; 3. fixed module; 4. ventilation and waterproof module; 5. base mounting plate; 6. fixed guide plate; 7. rib plate; 8. fixed plate; 9. swing guide vane; 10. transmission chain; 11. sprocket; 12. straight rod; 13. mounting circular hole. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the protection scope of the present invention.

[0017] Example 1.

[0018] like Figure 1 As shown, the present invention provides a ventilation and waterproof device for a water-cooling unit of an electric vehicle, comprising a control module 2 and an execution device 1.

[0019] The actuator 1 includes a fixed module 3 and a ventilation and waterproof module 4. The fixed module 3 is connected to the ventilation and waterproof module 4 and is used to connect the ventilation and waterproof module 4 to the water-cooled unit. The ventilation and waterproof module 4 includes a swing guide vane 9 and a driving mechanism. The control module 2 is connected to the driving mechanism and is used to control the operation of the driving mechanism. The driving mechanism is connected to the end of the swing guide vane 9 close to one end of the fixed module 3 and is used to drive the swing guide vane 9 to rotate around the end close to one end of the fixed module 3. There are multiple swing guide vanes 9, and all the swing guide vanes 9 remain parallel at all times when they are driven to rotate.

[0020] like Figure 2 As shown, the fixed module 3 includes a fixed plate 8, a base mounting plate 5, a fixed guide plate 6 and a rib plate 7; the fixed guide plate 6 is welded to the side of the base mounting plate 5 facing the water cooling unit, the rib plate 7 welds the fixed guide plate 6 and the base mounting plate 5 together, the fixed plate 8 is welded to the side of the base mounting plate 5 facing away from the water cooling unit, and the swing guide vane 9 is connected to the fixed plate 8.

[0021] like Figure 2 As shown, a plurality of circular mounting holes 13 are provided on the fixing plate 8 , and the number of the circular mounting holes 13 is the same as the number of the swing guide vanes 9 .

[0022] like Figure 2 and Figure 3 As shown, a through hole is provided at the end of the swing guide vane 9 close to one end of the fixed module 3, and the ventilation and waterproof module 4 also includes a straight rod 12 inserted in the through hole, and the straight rod 12 and the swing guide vane 9 are welded together, and one end of the straight rod 12 inserted into the through hole is inserted in the mounting circular hole 13.

[0023] like Figure 2 and Figure 3As shown, the driving mechanism includes a sprocket 11, a transmission chain 10 and a motor. The sprocket 11 is fixedly connected to one end of a straight rod 12. A plurality of sprockets 11 are provided and the number is the same as the number of swing guide vanes 9. The transmission chain 10 is sleeved on the sprocket 11. The motor is connected to one of the sprockets 11 and is used to drive the rotation thereof, thereby driving the other sprockets 11 to rotate through the transmission chain 10, thereby driving the straight rod 12 to rotate, thereby driving the swing guide vanes 9 to rotate, and finally realizing the change of the angle of the swing guide vanes 9, thereby completing the change of the three states of the actuator 1, and each state can cope with different working environments of the water-cooled unit.

[0024] The control module 2 is connected to the motor to control its operation.

[0025] Under different swing guide vane 9 conditions, the air intake volume of the water-cooled unit is as follows Figure 4 As shown in the figure, the air intake calculation simulation simulates that there are two electronic fans rotating inside the water cooling unit to suck air inwards. The wind speed at the boundary inlet is 1.4m / s. Figure 4 From the content, it can be known that: when the position of the swing guide vane 9 is controlled to form an angle of 90° with the base mounting plate 5, the ventilation volume is guaranteed to be in the maximum state, and the heat dissipation effect is the best, which is state 1, which is suitable for the water-cooled unit in a completely waterless working environment. When the position of the swing guide vane 9 is controlled to form an angle of 60° with the base mounting plate 5, although the ventilation volume is reduced, the heat dissipation effect of the water-cooled unit can still be guaranteed, the battery is within the normal working temperature range, and it also has a certain waterproof effect, which is state 2, which is suitable for the water-cooled unit in a small amount of rain working environment. When the position of the swing guide vane 9 is controlled to form an angle of 30° with the base mounting plate 5, the ventilation volume is the smallest, but it can still ensure the cooling effect of the water-cooled unit to keep the battery within the normal working temperature range, and it has a strong waterproof effect, which is state 3, which is suitable for the water-cooled unit in a large amount of rain working environment. The driver can select the working state of this device according to the working environment of the vehicle to ensure the reliability of the water-cooled unit and ensure that the battery is always in normal working condition.

[0026] Figure 5 and Figure 6 The method used is: using the DPM (discrete phase) model to simulate the water being sprayed out from the nozzle and breaking into water droplets, and tracking the movement trajectory of the water droplets; Figure 5 and Figure 6 From the results, the waterproof effect of state 1 and state 3 can also be verified.

[0027] Example 2.

[0028] The present invention provides a ventilation and waterproof device for a water-cooling unit of an electric vehicle, comprising a control module 2 and an execution device 1.

[0029] The actuator 1 includes a fixed module 3 and a ventilation and waterproof module 4. The fixed module 3 is connected to the ventilation and waterproof module 4 and is used to connect the ventilation and waterproof module 4 to the water-cooled unit. The ventilation and waterproof module 4 includes a swing guide vane 9 and a driving mechanism. The control module 2 is connected to the driving mechanism and is used to control the operation of the driving mechanism. The driving mechanism is connected to the end of the swing guide vane 9 close to one end of the fixed module 3 and is used to drive the swing guide vane 9 to rotate around the end close to one end of the fixed module 3. There are multiple swing guide vanes 9, and all the swing guide vanes 9 remain parallel at all times when they are driven to rotate.

[0030] The fixed module 3 includes a fixed plate 8, a base mounting plate 5, a fixed guide plate 6 and a rib plate 7; the fixed guide plate 6 is welded to the side of the base mounting plate 5 facing the water cooling unit, the rib plate 7 welds the fixed guide plate 6 and the base mounting plate 5 together, the fixed plate 8 is welded to the side of the base mounting plate 5 facing away from the water cooling unit, and the swing guide vane 9 is connected to the fixed plate 8.

[0031] The fixing plate 8 is provided with a plurality of circular mounting holes 13 , and the number of the circular mounting holes 13 is the same as the number of the swing guide vanes 9 .

[0032] The left and right sides of the end of the swing guide vane 9 close to one end of the fixed module 3 are provided with protrusions, and the protrusion on one side is inserted into the installation circular hole 13.

[0033] The driving mechanism includes a sprocket 11, a transmission chain 10 and a motor. The sprocket 11 is fixedly connected to the protrusion not inserted in the mounting circular hole 13. There are multiple sprockets 11 and the number is consistent with the number of swing guide vanes 9. The transmission chain 10 is sleeved on the sprocket 11. The motor is connected to one of the sprockets 11 and is used to drive it to rotate, thereby driving the other sprockets 11 to rotate through the transmission chain 10, and then driving the protrusion connected to the sprocket 11 to rotate, and then driving the swing guide vanes 9 to rotate.

[0034] The control module 2 is connected to the motor to control its operation.

[0035] Example 3.

[0036] The present invention provides a ventilation and waterproofing method for a water-cooling unit of an electric vehicle, comprising: Get the wind speed and rainfall of the environment where the water cooling unit is currently located; Based on the wind speed and the rainfall, the CFD method is used to calculate the air intake and water intake of the water-cooled unit when the swing guide vane 9 is at different angles; Based on the calculated air inlet and water inlet of each group, a combination that meets the preset air inlet standard and the preset water inlet standard is selected, so as to obtain the optimal angle of the swing guide vane 9 corresponding to the combination; The control motor rotates the swing guide vane 9 to the optimal angle.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A ventilation and waterproof device for a water-cooling unit of an electric vehicle, characterized in that: It includes a control module and an actuator; The execution device includes a fixing module and a ventilation and waterproof module, wherein the fixing module is connected to the ventilation and waterproof module and is used to connect the ventilation and waterproof module to the water cooling unit, and the ventilation and waterproof module includes a swing guide vane and a driving mechanism; The control module is connected to the driving mechanism for controlling the operation of the driving mechanism. The driving mechanism is connected to the end of the swing guide vane close to one end of the fixed module for driving the swing guide vane to rotate around the end close to one end of the fixed module. There are multiple swing guide vanes, and all the swing guide vanes remain parallel at all times when they are driven to rotate.

2. The ventilation and waterproof device for electric vehicle water cooling unit according to claim 1, characterized in that: The fixed module includes a fixed plate, a base mounting plate, a fixed guide plate and a rib plate; the fixed guide plate is fixed to the side of the base mounting plate facing the water cooling unit, the rib plate fixes the fixed guide plate and the base mounting plate together, the fixed plate is fixed to the side of the base mounting plate facing away from the water cooling unit, and the swing guide vane is connected to the fixed plate.

3. The ventilation and waterproof device for electric vehicle water cooling unit according to claim 2, characterized in that: The fixing plate is provided with a plurality of circular mounting holes, and the number of the circular mounting holes is the same as the number of the swing guide vanes.

4. The ventilation and waterproof device for electric vehicle water cooling unit according to claim 3, characterized in that: A through hole is provided at the end of the swing guide vane close to one end of the fixed module, and the ventilation and waterproof module also includes a straight rod inserted in the through hole, and the straight rod and the swing guide vane are fixedly connected, and one end of the straight rod inserted into the through hole is inserted into the mounting circular hole.

5. The ventilation and waterproof device for electric vehicle water cooling unit according to claim 4, characterized in that: The driving mechanism includes a sprocket, a transmission chain and a motor. The sprocket is fixedly connected to one end of the straight rod. The sprocket is provided with a plurality of sprockets and the number of the sprockets is the same as the number of the swing guide vanes. The transmission chain is sleeved on the sprocket. The motor is connected to one of the sprockets and is used to drive the motor to rotate, thereby driving the other sprockets to rotate through the transmission chain, thereby driving the straight rod to rotate, and then driving the swing guide vanes to rotate; The control module is connected to the motor.

6. The ventilation and waterproof device for electric vehicle water cooling unit according to claim 3, characterized in that: The end of the swing guide vane close to one end of the fixed module is provided with protrusions on both sides, and the protrusion on one side is inserted into the mounting circular hole.

7. The ventilation and waterproof device for electric vehicle water cooling unit according to claim 6, characterized in that: The driving mechanism comprises a sprocket, a transmission chain and a motor, the sprocket is fixedly connected to the protrusion not inserted into the mounting circular hole, a plurality of sprockets are provided and the number of the sprockets is the same as the number of the swing guide vanes, the transmission chain is sleeved on the sprocket, the motor is connected to one of the sprockets and is used to drive the motor to rotate, thereby driving the other sprockets to rotate through the transmission chain, thereby driving the protrusion connected to the sprocket to rotate, and then driving the swing guide vanes to rotate; The control module is connected to the motor.

8. A ventilation and waterproofing method for a water-cooling unit of an electric vehicle, characterized in that: include: Get the wind speed and rainfall of the environment where the water cooling unit is currently located; Based on the wind speed and the rainfall, a CFD method is used to calculate the air intake and water intake of the water-cooled unit when the swing guide vanes are at different angles; Based on the calculated groups of air inlet and water inlet, a combination that meets the preset air inlet standard and the preset water inlet standard is selected, so as to obtain the optimal angle of the swing guide vane corresponding to the combination; The motor is controlled to rotate the swing guide vane to the optimal angle.

Images