Wireless charging device, charging apparatus and electric vehicle

Abstract

The application relates to the technical field of wireless charging, and provides a wireless charging device, a charging equipment and an electric vehicle. The wireless charging device comprises a shell, a baffle, an electromagnetic induction unit and a driving device. The inner cavity of the shell is used for accommodating the electromagnetic induction unit. The shell is provided with a ventilation opening. The ventilation opening is communicated with the inner cavity of the shell and is used for heat dissipation of the electromagnetic induction unit. The baffle is movably connected to the shell. The driving device and the electromagnetic induction unit are communicated through a control unit. The control unit is used for sending an instruction to the driving device, so that the driving device drives the baffle to open or block the ventilation opening. When the control unit sends an instruction of opening the ventilation opening to the driving device, the driving device drives the baffle to open the ventilation opening, so as to dissipate in time. When the control unit sends an instruction of blocking the ventilation opening to the driving device, the driving device drives the baffle to block the ventilation opening, so as to avoid that external water, dust and the like enter the inner cavity of the shell from the ventilation opening.

Description

Technical Field

[0001] This application relates to the technical field of wireless charging, and more particularly to a wireless charging device, charging equipment, and electric vehicle. Background Technology

[0002] Wireless charging technology has become a hot research topic in recent years and is gradually being applied to electric vehicles. Specifically, a wireless charging device includes a housing and an electromagnetic induction unit inside the housing. This unit generates or receives electromagnetic fields and generates electricity through the magnetic field. When the electromagnetic induction unit is working, it produces a significant amount of heat, so ventilation openings are usually provided on the housing to dissipate this heat. However, these ventilation openings can allow dust to enter the housing and may also allow water to splash into the openings during rain, potentially damaging the wireless charging device. Utility Model Content

[0003] Embodiments of this application provide a wireless charging device, charging equipment, and electric vehicle, which can prevent dust or water from entering the interior of the wireless charging device while satisfying heat dissipation requirements.

[0004] In a first aspect, embodiments of this application provide a wireless charging device, which includes a housing, a baffle, an electromagnetic induction unit, and a driving device. The inner cavity of the housing is used to accommodate the electromagnetic induction unit, and the housing has a vent that connects to the inner cavity of the housing and is used to dissipate heat from the electromagnetic induction unit. The baffle is movably connected to the housing and is communicatively connected to the driving device through a control unit. The control unit is used to send instructions to the driving device to cause the driving device to drive the baffle to open or block the vent.

[0005] In this embodiment, when the control unit sends a command to the drive device to open the vent, the drive device will drive the baffle to open the vent, thereby dissipating the heat generated by the electromagnetic induction unit in a timely manner, ensuring the electromagnetic induction unit can operate normally for an extended period. When the control unit sends a command to the drive device to block the vent, the drive device will drive the baffle to block the vent, thereby preventing external water or dust from entering the inner cavity of the housing through the vent, thus avoiding damage to the electromagnetic induction unit and extending its service life.

[0006] In some embodiments, the baffle is slidably connected to the housing, for example, it can be located on the outside of the housing and slidably connected to the outer surface of the housing, or it can be located on the inside of the housing and slidably connected to the inner surface of the housing. In this embodiment, because the baffle and the housing are relatively slidably connected, the space occupied by the baffle during the entire process of opening or blocking the ventilation opening can be effectively reduced.

[0007] In some embodiments, the baffle is attached to the inner surface of the housing and is slidably disposed relative to the inner surface of the housing. In this embodiment, because the baffle and the inner surface of the housing are slidably disposed relative to each other, the space occupied by the baffle during the entire process of opening or blocking the vent can be effectively reduced, so that the lower baffle and the drive device for driving the baffle can be assembled within the limited space of the housing. It is understood that in some other embodiments, the baffle may not be attached to the inner surface of the housing, for example, there may be a certain gap between the baffle and the inner surface of the housing, and the gap can be filled by a sealing structure, such as a sealing ring, so that the vent can also be blocked by the baffle.

[0008] In some embodiments, the drive device is located within the inner cavity of the housing. In this embodiment, the drive device for driving the baffle is also located inside the inner cavity of the housing, so that the housing can protect the drive device from being damaged by impacts. The drive device being located inside the housing also provides waterproofing and dustproofing, reducing the risk of damage to the drive device.

[0009] In some embodiments, the housing includes a top wall and a bottom wall opposite each other in the thickness direction, and a side wall connecting the top wall and the bottom wall. A vent is formed in the side wall. A driving device is used to drive a baffle to move along the thickness direction to a first position or a second position on the side wall. The vent is formed at the first position on the side wall, which is located on the side of the second position facing the top wall. In this embodiment, because the vent is located at the first position on the side wall, and the first position is above the second position in the thickness direction, the lower edge of the vent is at a certain height from the ground, which can effectively prevent water from entering the inner cavity of the housing through the vent when the ground is flooded.

[0010] In some embodiments, when the vent is open, the lower edge of the vent in the thickness direction is higher than the baffle. In this embodiment, since the lower edge of the vent in the thickness direction is higher than the baffle when the vent is open, the vent is located above the 1 / 2 position of the sidewall in the thickness direction, so that the lower edge of the vent is high enough to prevent water from accumulating and entering the inner cavity of the housing.

[0011] In some embodiments, the drive device includes a drive gear, an auxiliary shaft, and a timing belt. The drive gear meshes with the timing belt, the auxiliary shaft supports the timing belt and assists its rotation, and a baffle is connected to the timing belt. The drive gear drives the timing belt to rotate and moves the baffle. In this embodiment, the drive gear meshes with the timing belt so that the timing belt rotates synchronously when the drive gear rotates. The auxiliary shaft supports the timing belt and assists its rotation.

[0012] In some embodiments, the drive device includes a drive gear and multiple auxiliary shafts. The drive gear and multiple auxiliary shafts jointly support the timing belt. The timing belt is used to connect one side of the baffle, which is supported by two auxiliary shafts. That is, the drive gear is moved out of the fixed side supporting the baffle. The drive gear is only responsible for "pulling" and "pushing" the timing belt, and not for "lifting" the baffle. This greatly reduces the load on the drive gear and reduces the risk of wear on the drive gear, thereby ensuring the motion accuracy and life of the drive gear. The two auxiliary shafts support the fixed side, which can create a stable and highly rigid linear motion reference, so that the baffle can have long stroke, high precision and smooth linear transmission.

[0013] In some embodiments, the housing includes a top wall and a bottom wall opposite each other in the thickness direction, two first side walls opposite each other in the length direction, and two second side walls opposite each other in the width direction. A vent is formed on the first side wall, and a drive gear and an auxiliary shaft are disposed on the second side wall. A timing belt is used to drive a baffle to move along the thickness direction. In this embodiment, the drive gear and the auxiliary shaft are disposed on the second side wall, and the central axes of the drive gear and the auxiliary shaft are perpendicular to the second side wall. The baffle is disposed parallel to the first side wall. Therefore, when the drive gear rotates, it can drive the baffle to slide relative to the side wall of the housing along the thickness direction, thereby allowing the baffle to switch between a first position and a second position relative to the side wall of the housing, so as to achieve the purpose of blocking or opening the vent through the baffle.

[0014] In some embodiments, the control unit sends a command to the drive device to open the vent when the electromagnetic induction unit is operating, so that the drive device drives the baffle to open the vent. In this embodiment, the command to open the vent can be sent synchronously to the drive device when the electromagnetic induction unit is operating, so that the drive device drives the baffle to open the vent when the electromagnetic induction unit is operating, thereby ensuring that the electromagnetic induction unit can dissipate heat in a timely manner.

[0015] In some embodiments, the control unit sends a command to the drive device to open or close the vent based on the temperature inside the housing or the water level outside the housing. This causes the drive device to activate the baffle to open or close the vent. It is understood that the temperature inside the housing and the water level outside the housing can be one of the bases for opening or closing the vent, but not the only one. In this embodiment, since the control unit can send the command to the drive device to open or close the vent based on the temperature inside the housing or the water level outside the housing, for example, when the temperature inside the housing is below a threshold, the control unit can send a command to close the vent. At this time, the wireless charging device has low heat dissipation requirements and will not affect the normal operation of the wireless charging device. Simultaneously, closing the vent can prevent external water or dust from entering the housing's interior through the vent. Similarly, when the water level outside the housing is higher than the lower edge of the vent, the control unit can send a command to the drive device to close the vent in a timely manner, preventing water from entering the housing's interior through the vent and thus avoiding damage to the electromagnetic induction unit inside the housing.

[0016] Secondly, embodiments of this application provide a charging device, which includes a power source and a wireless charging device as described in any of the first aspects above. The power source supplies power to the wireless charging device, and the electromagnetic induction unit of the wireless charging device includes an electromagnetic transmitting coil for transmitting the magnetic field of the wireless charging device. The magnetic field generates electrical energy through electromagnetic induction.

[0017] Thirdly, embodiments of this application provide an electric vehicle, which includes a battery module and a wireless charging device as described in any of the first aspects above. The wireless charging device is used to charge the battery module. The electromagnetic induction unit of the wireless charging device includes an electromagnetic receiving coil, which is used to receive a magnetic field. The magnetic field generates electrical energy through electromagnetic induction. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram of a charging device and an electric vehicle provided in the embodiments of this application; Figure 2A This is a schematic diagram of the structure of a wireless charging device provided in an embodiment of this application; Figure 2B for Figure 2A A schematic diagram of the shell structure in the embodiment; Figure 3 This is a block diagram of the control logic between the drive device and the control unit in the embodiments of this application; Figure 4A for Figure 2A Cross-sectional view of the wireless charging device in the embodiment at the vent. Figure 4B for Figure 4A A schematic diagram of the baffle located at the second position on the sidewall in the embodiment; Figure 5 for Figure 2A A schematic diagram of the assembly between the housing, the driving device, and the baffle in the wireless charging device of the embodiment. Figure 6 A cross-sectional view of another wireless charging device provided in an embodiment of this application; Figure 7 A cross-sectional view of yet another wireless charging device provided in an embodiment of this application; Figure 8A This is a schematic diagram of the structure of another wireless charging device provided in an embodiment of this application; Figure 8B for Figure 8A A schematic diagram of the structure of the wireless charging device when the baffle opens the ventilation port; Figure 9 The embodiment provides a cross-sectional view of yet another wireless charging device.

[0020] Explanation of reference numerals in the attached figures: X: Length direction; Y: Width direction; Z: Thickness direction; 100. Charging equipment; 101. Wireless charging device; 102. Electromagnetic induction unit; 103. External power supply; 200. Electric vehicles; 201. Wireless charging devices; 203. Battery modules; 300. Wireless charging device; 10. Shell; 11. Inner cavity; 12. Vent; 13. Top wall; 14. Bottom wall; 15. Side wall; 151. First side wall; 152. Second side wall; 153. First position; 154. Second position; 20. Baffle; 30. Drive unit; 31. Drive gear; 32. Auxiliary shaft; 321. First auxiliary shaft; 322. Second auxiliary shaft; 323. Third auxiliary shaft; 33. Synchronous belt; 331. Fixed side; 34. Rotating shaft; 40. Electromagnetic induction unit; 50. Control unit. Detailed Implementation

[0021] The following section will first explain some of the terms used in the embodiments of this application.

[0022] The terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] In this specification, the terms "vertical" and "parallel" are explained.

[0024] Perpendicularity: The perpendicularity defined in this application is not limited to an absolute perpendicular intersection (with an included angle of 90 degrees). It is permissible for non-absolute perpendicular intersections caused by factors such as assembly tolerances, design tolerances, and structural flatness. It is permissible for errors within a small angular range, such as an assembly error range of 80 to 100 degrees, which can all be understood as a perpendicular relationship.

[0025] Parallelism: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism, allowing for situations where there is no absolute parallelism due to factors such as assembly tolerances, design tolerances, and structural flatness. These situations where there is no absolute parallelism are also defined as parallelism in this application.

[0026] Figure 1 This is a schematic diagram illustrating a charging device 100 and an electric vehicle 200 provided in an embodiment of this application. Figure 1 As shown, one application scenario of the wireless charging device 101 of this application is a charging device 100. The charging device 100 includes the wireless charging device 101 and an external power supply 103, which supplies power to the wireless charging device 101. The wireless charging device 101 includes an electromagnetic induction unit 102. The electromagnetic induction unit 102 includes an electromagnetic transmitting coil, which emits a magnetic field that generates electrical energy for charging through electromagnetic induction. The charging device 100 can be a ground charging pad, a wireless charging station, etc., and is not limited here. It should be noted that the charging device 100 provided in this embodiment can also be used in scenarios such as intelligent robots, smart homes, or drones. The charging device 100 can also be installed on charging piles or walls, and is not limited to the ground charging scenario of electric vehicles.

[0027] In some embodiments, the wireless charging device 101 further includes a power conversion circuit for power conversion operations. The power conversion circuit may be integrated into the transmitting coil of the wireless charging device 101.

[0028] like Figure 1 As shown, another application scenario of the wireless charging device 201 of this application is an electric vehicle 200, which includes the wireless charging device 201 and a battery module 203. The wireless charging device 201 is used to charge the battery module 203. The electric vehicle 200 can be an electric vehicle, a hybrid electric vehicle, etc. The battery module 203 can be a portable wireless charging battery module 203, an on-board wireless charging battery module 203, etc. The wireless charging device can be installed at the front, middle, or rear of the electric vehicle 200. In this embodiment, the wireless charging device 201 also includes an electromagnetic induction unit (not shown in the figure), which includes an electromagnetic receiving coil. The electromagnetic receiving coil is used to receive the power transmitted by the wireless charging device of the charging equipment 100. The electromagnetic receiving coil receives the magnetic field of the wireless charging device of the charging equipment 100, and the magnetic field generates the electrical energy required by the battery module 203 through electromagnetic induction.

[0029] In some embodiments, the wireless charging device 201 further includes a power conversion circuit for power conversion operations. The power conversion circuit may be integrated into the receiving coil of the wireless charging device 201.

[0030] In some embodiments, the electric vehicle 200 and the charging device 100 constitute a wireless power transmission system. The wireless power transmission system includes a power conversion circuit at the ground end, an electromagnetic transmitting coil, an electromagnetic receiving coil at the vehicle end, and another power conversion circuit. In some embodiments, the electromagnetic transmitting coil is located at the ground end, and the electromagnetic receiving coil is located in the chassis of the electric vehicle 200. In this embodiment, power is transmitted through electromagnetic induction between the electromagnetic transmitting coil and the electromagnetic receiving coil. In some embodiments, the electromagnetic receiving coil may be installed at the front, middle, or rear end of the electric vehicle 200. Figure 1 The description of the installation in the middle is merely illustrative and does not specify the exact installation location of the electromagnetic receiving coil.

[0031] Since the electromagnetic induction unit 102 in the wireless charging devices 101 and 201 generates heat during operation, it is necessary to dissipate the generated heat in a timely manner in order to ensure that the electromagnetic induction unit 102 continues to work at high efficiency. However, using air cooling to heat the wireless charging devices 101 and 201 can cause water to splash into the wireless charging devices 101 and 201 during rainy days, and may also cause dust to enter the wireless charging devices 101 and 201 during windy days, resulting in water and dust accumulation in the wireless charging devices 101 and 201, which affects the normal use of the wireless charging devices 101 and 201.

[0032] In order to ensure that the wireless charging device 300 can dissipate heat while preventing dust or water from entering the wireless charging device 300. Figure 2A The embodiment provides a wireless charging device 300, Figure 2A This is a schematic diagram of the structure of a wireless charging device 300 provided in an embodiment of this application. Figure 2B for Figure 2A A schematic diagram of the structure of the housing 10 in the embodiment is shown, wherein Figure 1 and Figure 2A In this embodiment, the housing 10 conceals a second sidewall 152 to allow other structures to be clearly visible.

[0033] Reference Figure 2A The wireless charging device 300 includes a housing 10 and an electromagnetic induction unit 40. The electromagnetic induction unit 40 is used to emit or receive electromagnetic fields. For example, when the wireless charging device 300 is used as a ground charging device, the electromagnetic induction unit 40 emits electromagnetic fields. Or, when the wireless charging device 300 is used as an electric vehicle 200, the electromagnetic induction unit 40 receives electromagnetic fields.

[0034] Reference Figure 2B The housing 10 has a length direction X, a width direction Y and a thickness direction Z. The housing 10 includes a top wall 13 and a bottom wall 14 opposite each other in the thickness direction Z and a side wall 15 located between the top wall 13 and the bottom wall 14. When the housing 10 is cuboid in shape, the side wall 15 of the housing 10 includes two first side walls 151 opposite each other in the length direction X and two second side walls 152 opposite each other in the width direction Y.

[0035] Reference Figure 2A and Figure 2B The electromagnetic induction unit 40 is disposed inside the inner cavity 11 of the housing 10 to protect the electromagnetic induction unit 40 through the housing 10. In order to improve the heat dissipation capacity of the electromagnetic induction unit 40, a vent 12 communicating with the inner cavity 11 of the housing 10 is provided on the housing 10 to allow air circulation inside and outside the inner cavity 11 of the housing 10 through the vent 12 to dissipate heat from the electromagnetic induction unit 40. Figure 2A and Figure 2BThis illustration shows the location of the vent 12 in one embodiment and does not limit the outline or specific structure of the vent 12. It is understood that the outline of the vent 12 can be circular, square or other shapes, the location of the vent 12 can be provided with a fence structure or a mesh structure, and the location of the vent 12 can also be provided with a filter screen.

[0036] To reduce the probability of water or dust entering the inner cavity 11 of the casing 10, such as Figure 2A and Figure 2B In some embodiments, the vent 12 is located on the side wall 15, such as on the first side wall 151 or the second side wall 152, thereby reducing the probability of external water entering the inner cavity 11 of the housing 10 through the vent 12 during rain, and also preventing dust from falling into the inner cavity 11 of the housing 10 through the vent 12. It is understood that in other embodiments, the vent 12 may also be located on the top wall 13 or the bottom wall 14.

[0037] To significantly reduce the probability of water or dust entering the inner cavity 11 of the casing 10, such as Figure 2A and Figure 2B In some embodiments, the wireless charging device 300 further includes a baffle 20 and a driving device 30 for driving the baffle 20. The baffle 20 is movably connected to the housing 10, for example, it can be slidably or rotatably disposed relative to the housing 10, or it can be movably disposed relative to the housing 10 in other ways. The driving device 30 can drive the baffle 20 to block or open the ventilation opening 12. For example, the wireless charging device 300 can drive the baffle 20 to open the ventilation opening 12 to dissipate the heat generated by the electromagnetic induction unit 40 in a timely manner, thereby maintaining the normal operation of the electromagnetic induction unit 40. The wireless charging device 300 can also drive the baffle 20 to block the ventilation opening 12 to prevent water or dust from entering the inner cavity 11 of the housing 10, thus preventing damage to the wireless charging device 300.

[0038] It is understandable that the drive unit 30 opens or closes the ventilation opening 12 according to the received command. Specifically, in order for the drive unit 30 to receive the command to open or close the ventilation opening 12, the automatic control baffle 20 opens or closes the ventilation opening 12 according to the received command. Figure 3 This is a block diagram illustrating the control logic between the drive device 30 and the control unit 50 in an embodiment of this application. (Refer to...) Figures 2A-3In some embodiments, the wireless charging device 300 further includes a control unit 50, which is communicatively connected to the driving device 30 and the electromagnetic induction unit 40. The control unit 50 sends commands to the driving device 30 to control the driving device 30 to drive the baffle 20 to move. For example, when the control unit 50 sends a command to the driving device 30 to open the vent 12, the driving device 30 will drive the baffle 20 to open the vent 12; when the control unit 50 sends a command to the driving device 30 to block the vent 12, the driving device 30 will drive the baffle 20 to block the vent 12.

[0039] Understandably, the control unit 50 sends different commands to the drive unit 30 based on different states. For example, when the vehicle needs charging, the electromagnetic induction unit 40 of the wireless charging device 300 needs to operate. The operating state of the electromagnetic induction unit 40 is then transmitted to the control unit 50, which in turn sends a command to the drive unit 30 to open the vent 12, causing the drive unit 30 to activate the baffle 20 to open the vent 12. Conversely, after the electromagnetic induction unit 40 has stopped operating, this state is transmitted to the control unit 50. After a certain period of time following the cessation of operation, the control unit 50 sends a command to the drive unit 30 to block the vent 12, causing the drive unit 30 to activate the baffle 20 to block the vent 12. This time period can be pre-configured with a fixed value or flexibly configured based on the operating state of the electromagnetic induction unit 40 or environmental conditions. For example, a temperature sensor may also be provided inside the cavity 11 of the housing 10. When the temperature sensor measures that the temperature inside the cavity 11 of the housing 10 is greater than or equal to a threshold, the control unit 50 will send a command to the drive device 30 to open the vent 12 based on the temperature signal detected by the temperature sensor, so that the drive device 30 drives the baffle 20 to open the vent 12. When the temperature sensor measures that the temperature inside the cavity 11 of the housing 10 is less than the threshold, the control unit 50 will send a command to the drive device 30 to block the vent 12 based on the temperature signal detected by the temperature sensor, so that the drive device 30 drives the baffle 20 to block the vent 12. For example, a water level sensor can be installed on the outside of the housing 10 to measure the water level. When the water level outside the housing 10 is higher than the lower edge of the vent 12, the control unit 50 will send a command to the drive device 30 to block the vent 12, so that the drive device 30 drives the baffle 20 to block the vent 12, thereby preventing water from entering the inner cavity 11 of the housing 10. Alternatively, the control unit 50 can also send a command to the drive device 30 to open or close the vent 12 based on atmospheric temperature or rainfall conditions. Furthermore, the control unit 50 can also make a comprehensive decision based on factors such as the operating status of the electromagnetic induction unit 40, the temperature inside the inner cavity 11 of the housing 10, the water level outside the housing 10, or the atmospheric environment, and send a command to the drive device 30 to open or close the vent 12. This allows for more precise blocking and opening of the vent 12, ensuring that the electromagnetic induction unit 40 meets its heat dissipation requirements while reducing or preventing external water or dust from entering the inner cavity 11 of the housing 10 through the vent 12.

[0040] It is understood that in some other embodiments, the control unit 50 may not be part of the wireless charging device 300, but rather part of the charging device 100 or the electric vehicle 200, that is, it may be located outside the wireless charging device 300, for example, located at the external power supply 103 of the charging device 100 (e.g., Figure 1 The battery module 203 inside or in electric vehicle 200 (such as...) Figure 1 This application does not limit the specific installation location of the control unit 50.

[0041] Figure 4A for Figure 2A A cross-sectional view of the wireless charging device 300 in the embodiment at the vent 12. Figure 4A In this embodiment, the baffle 20 is located at the first position 153 on the side wall 15. Figure 4B for Figure 4A A schematic diagram of the baffle 20 located at the second position 154 of the side wall 15 in the embodiment.

[0042] Reference Figure 4A and Figure 4B In some embodiments, the baffle 20 and the drive device 30 are disposed inside the inner cavity 11 of the housing 10, so that the housing 10 can protect the drive device 30 from being damaged by impacts. The drive device 30 is located inside the housing 10, which also makes it waterproof and dustproof, reducing the risk of damage to the drive device 30. Of course, in other embodiments, the baffle 20 and the drive device 30 may also be disposed outside the housing 10. This application does not limit the specific installation position of the drive device 30.

[0043] Reference Figure 4A and Figure 4B In some embodiments, the baffle 20 is slidably disposed relative to the inner surface of the housing 10, for example, the baffle 20 is slidably disposed relative to the inner surface of the side wall 15 of the housing 10. For example, in some specific embodiments, the driving device 30 can drive the baffle 20 to slide to a first position 153 or a second position 154 of the side wall 15, wherein the first position 153 is... Figure 4A In the embodiment, the second position 154 is located in the region directly opposite the baffle 20 along the length direction X. Figure 4B In the embodiment, the region is directly opposite the baffle 20 in the length direction X. It is understood that the first position 153 and the second position 154 are only used to describe the positional relationship between the baffle 20 and the side wall 15, and do not mean that the first position 153 and the second position 154 are two specific positions on the side wall 15. The first position 153 and the second position 154 can be changed according to the positional relationship between the baffle 20 and the side wall 15.

[0044] Vent 12 is located at a first position 153 on the side wall 15. When the drive device 30 drives the baffle 20 to slide to the first position 153, the baffle 20 can block the vent 12, thus preventing water or dust from entering the inner cavity 11 of the housing 10. When the drive device 30 drives the baffle 20 to slide to the second position 154, the baffle 20 is removed from the vent 12, opening the vent 12, which can then be used to dissipate heat from the electromagnetic induction unit 40 inside the housing 10.

[0045] Reference Figure 4A and Figure 4B In some embodiments, the first position 153 is located on the side of the second position 154 facing the top wall 13. The driving device 30 can drive the baffle 20 to move along the thickness direction Z to the first position 153 or the second position 154 of the side wall 15. Since the vent 12 is located at the first position 153 of the side wall 15, and the first position 153 is located above the second position 154 in the thickness direction Z, the lower edge of the vent 12 is at a certain height from the ground, which can effectively prevent water from entering the inner cavity 11 of the housing 10 from the vent 12 when the ground is flooded. Of course, when the rainfall is particularly heavy, the ground drainage is not fast enough, and before the water on the ground exceeds the lower edge of the vent 12, the driving device 30 will drive the baffle 20 to move to the first position 153 and block the vent 12 to prevent water from entering the inner cavity 11 of the housing 10.

[0046] Specifically, such as Figure 4B When the vent 12 is open, the lower edge of the vent 12 in the thickness direction Z is higher than the baffle 20. That is, the vent 12 is located above 1 / 2 of the side wall 15 in the thickness direction Z, so that the lower edge of the vent 12 is high enough to prevent water from entering the inner cavity 11 of the housing 10.

[0047] It is understandable that after the baffle 20 blocks the vent 12, it can completely seal the vent 12. For example, a sealing ring or sealing gasket can be provided between the baffle 20 and the side wall 15 of the housing 10 to ensure that the baffle 20 completely seals the vent 12 after blocking it, so as to prevent water from entering.

[0048] It is understood that in some other embodiments, the first position 153 and the second position 154 may also be arranged along the length direction X or the width direction Y, that is, the driving device 30 drives the baffle 20 to slide relative to the side wall 15 of the housing 10 along the length direction X or the width direction Y.

[0049] Figure 5 for Figure 2A A schematic diagram of the assembly between the housing 10, the driving device 30, and the baffle 20 in the wireless charging device 300 of the embodiment, wherein, Figure 5The housing 10 conceals the top wall 13 and a second side wall 152 to clearly show the specific structure of the drive unit 30, while... Figure 5 The baffle 20 is in the state of having the ventilation opening 12 open.

[0050] In order for the baffle 20 to slide relative to the side wall 15 of the housing 10 via the drive device 30, refer to Figure 5 In some embodiments, the drive device 30 includes a drive gear 31, an auxiliary shaft 32, and a timing belt 33. The drive gear 31 meshes with the timing belt 33 so that when the drive gear 31 rotates, it can drive the timing belt 33 to rotate synchronously. The auxiliary shaft 32 is used to support the timing belt 33 and assist the timing belt 33 in rotating.

[0051] It is understood that in some embodiments, the auxiliary shaft 32 may be a driven gear meshing with the synchronous belt 33, supporting the synchronous belt 33 through the driving gear 31 and the auxiliary shaft 32 to drive the synchronous belt 33 to rotate. In other embodiments, the auxiliary shaft 32 may not be a gear, but simply a regular bearing, mainly serving to support the synchronous belt 33.

[0052] Reference Figure 5 In some embodiments, the baffle 20 is connected to the timing belt 33, for example, by fasteners such as screws, or by adhesive. When the drive gear 31 drives the timing belt 33 to rotate, the timing belt 33 drives the baffle 20 to move relative to the side wall 15 of the housing 10.

[0053] It is understandable that the drive gear 31 can be driven to rotate by a motor, such as the motor built into the wireless charging device 300. Since there are many common and readily available ways to drive the drive gear 31, the device used to drive the drive gear 31, such as a motor, is not shown in the figure.

[0054] In order for the baffle 20 to slide relative to the side wall 15 of the housing 10 in the thickness direction Z via the drive device 30, refer to Figure 4A and Figure 5 In some embodiments, the vent 12 is disposed on the first sidewall 151, the drive gear 31 and the auxiliary shaft 32 are disposed on the second sidewall 152, and the central axes of the drive gear 31 and the auxiliary shaft 32 are both perpendicular to the second sidewall 152. The baffle 20 is disposed parallel to the first sidewall 151. Therefore, when the drive gear 31 rotates, it can drive the baffle 20 to slide relative to the sidewall 15 of the housing 10 along the thickness direction Z, thereby driving the baffle 20 relative to the sidewall 15 of the housing 10 in the first position 153 and the second position 154 (e.g., Figure 4A and Figure 4BSwitching between the baffle 20 and the vent 12 to block or open the vent 12.

[0055] In order to enable the baffle 20 to be positioned relative to the first sidewall 151 in the thickness direction Z at the first position 153 and the second position 154 (e.g.) Figure 4A and Figure 4B The drive gear 31 can rotate both forward and reverse, allowing for frequent switching between positions. For example, when the drive gear 31 rotates forward, it drives the timing belt 33 to rotate forward, thus switching the baffle 20 from the second position 154 to the first position 153. When the drive gear 31 rotates in reverse, it drives the timing belt 33 in reverse. Because the drive gear 31 can rotate both forward and reverse, the baffle 20 can move linearly along the thickness direction Z with the timing belt 33, without needing to go around the drive gear 31 or the auxiliary shaft 32. Since it does not need to go around the drive gear 31 or the auxiliary shaft 32 with the timing belt 33, the baffle 20 does not need to be bent. The baffle 20 can be made of a rigid material to increase its strength and service life.

[0056] Reference Figure 5 In some embodiments, the drive unit 30 includes a drive gear 31 and multiple auxiliary shafts 32, which together support the synchronous belt 33. The design of multiple auxiliary shafts 32 allows for flexible design of the synchronous belt 33, enabling changes in its transmission direction to achieve transmission along complex paths such as loops and rectangles. It also allows the synchronous belt 33 to easily bypass obstacles, facilitating a more rational layout of the drive unit 30 within the housing 10. Furthermore, the multiple auxiliary shafts 32 effectively support the synchronous belt 33, preventing it from sagging and vibrating under its own weight, resulting in smoother operation.

[0057] Reference Figure 5 In some embodiments, there are three auxiliary shafts 32, namely a first auxiliary shaft 321, a second auxiliary shaft 322, and a third auxiliary shaft 323. The first auxiliary shaft 321, the second auxiliary shaft 322, the third auxiliary shaft 323, and the drive gear 31 support the synchronous belt 33 in a square position. By fixing the baffle 20 to one side of the synchronous belt 33 near the first sidewall 151, for ease of description, this side of the synchronous belt 33 is designated as the fixed side 331, which is parallel to the first sidewall 151. This allows the baffle 20 to be parallel to the first sidewall 151. When the drive gear 31 rotates, the baffle 20 will move steadily and precisely in a straight line along the fixed side 331 of the square synchronous belt 33, thereby allowing the baffle 20 to slide precisely in a straight line in the thickness direction Z relative to the first sidewall 151.

[0058] Reference Figure 5In some embodiments, the timing belt 33 is used to connect one side of the baffle 20 to a fixed side 331 supported by two auxiliary shafts 32. For example, the fixed side 331 can be supported by a first auxiliary shaft 321 and a second auxiliary shaft 322. In other words, the drive gear 31 is moved out of the fixed side 331 supporting the baffle 20. The drive gear 31 is only responsible for "pulling" and "pushing" the timing belt 33, and not for "lifting" the baffle 20. This greatly reduces the load on the drive gear 31 and reduces the risk of wear on the drive gear 31, thereby ensuring the motion accuracy and life of the drive gear 31. The two auxiliary shafts 32 support the fixed side 331, which can create a stable and highly rigid linear motion reference, so that the baffle 20 can have long stroke, high precision and smooth linear transmission.

[0059] Of course, in some other implementations, such as Figure 6 As shown, Figure 6 This is a cross-sectional view of another wireless charging device 300 provided in an embodiment of this application. The driving device 30 may also include a drive gear 31 and two auxiliary shafts 32, and the timing belt 33 is used to fix the fixed edge 331 of the connecting baffle 20, which is supported by the two auxiliary shafts 32.

[0060] In some other implementations, such as Figure 7 As shown, Figure 7 This is a cross-sectional view of another wireless charging device 300 provided in this application embodiment. The driving device 30 may also include only one driving gear 31 and one auxiliary shaft 32. The driving gear 31 supports the synchronous belt 33. The driving gear 31 and the auxiliary shaft 32 are spaced apart along the thickness direction Z, and the driving gear 31 is located below the auxiliary shaft 32. A baffle 20 is provided on one side of the synchronous belt 33 near the first sidewall 151, that is, the baffle 20 is fixed to the fixed side 331 of the synchronous belt 33. When the synchronous belt 33 moves, it can drive the baffle 20 to slide relative to the first sidewall 151. In addition, since the driving gear 31 is located below the auxiliary shaft 32, the load on the baffle 20 by the driving gear 31 can be reduced, the damage to the driving gear 31 can be reduced, and the service life of the driving gear 31 can be improved.

[0061] It is understood that in some other embodiments, the drive device 30 may also be a gear and rack structure, for example, the baffle 20 is fixed on the rack, and the gear can drive the rack to move along the thickness direction Z, so that the rack can drive the baffle 20 to move along the thickness direction Z.

[0062] The above embodiments illustrate a slidable connection between the baffle 20 and the first sidewall 151. It is understood that in other embodiments, the baffle 20 may also be rotatably configured relative to the first sidewall 151, such as... Figure 8A and Figure 8B As shown, Figure 8AThis is a schematic diagram of the structure of another wireless charging device 300 provided in an embodiment of this application. Figure 8A The baffle 20 in the middle blocks the ventilation opening 12. Figure 8B for Figure 8A A schematic diagram of the structure of the baffle 20 in the wireless charging device 300 when the vent 12 is opened.

[0063] Reference Figure 8A and Figure 8B The driving device 30 includes a rotating shaft 34 and a power source for driving the rotating shaft 34 to rotate, such as a motor. The motor can drive the rotating shaft 34 to rotate, thereby causing the baffle 20 to flip, to open or block the vent 12. In one embodiment, the wireless charging device 300 may also include a locking structure to fix the baffle 20 to the side wall 15. A sealing structure, such as a sealing strip, can be provided between the baffle 20 and the side wall 15. The locking structure applies pressure to the baffle 20 to achieve a seal between the baffle 20 and the side wall 15, preventing external water from entering the housing through the vent 12. For example, a solenoid valve can be used to drive the locking structure to lock or unlock. When it is necessary to open the baffle 20, with the motor powered on and driving the rotating shaft 34 to rotate, the solenoid valve is energized to unlock, allowing the baffle 20 to open.

[0064] The rotating shaft 34 can be rotatably mounted on the top wall 13, that is, the central axis of the rotating shaft 34 is aligned with the thickness direction Z, and the baffle 20 is fixed on the rotating shaft 34. Thus, when the power source drives the rotating shaft 34 to rotate, the baffle 20 can rotate around the central axis of the rotating shaft 34, thereby driving the baffle 20 to rotate, so as to block or open the ventilation opening 12 through the baffle 20.

[0065] Understandably, the rotating shaft 34 can also rotate forward or backward. For example, when the rotating shaft 34 rotates forward, it will drive the baffle 20 to rotate from the position of opening the vent 12 to the position of blocking the vent 12. When the rotating shaft 34 rotates backward, it will drive the baffle 20 to rotate from the position of blocking the vent 12 to the position of opening the vent 12.

[0066] The wireless charging device 300 in the above embodiments only shows one vent 12. It is understood that the number of vents 12 in the wireless charging device 300 of this application is not limited; for example... Figure 9 The embodiment provides a cross-sectional view of yet another wireless charging device 300.

[0067] Reference Figure 9The number of vents 12 can be multiple. For example, vents 12 can be provided on both first sidewalls 151, and the two first sidewalls 151 are arranged opposite each other, so that the two opposite vents 12 can be connected to form an air duct. When the two vents 12 are open, the convection effect of the two vents 12 can improve the air circulation efficiency in the housing 10 and improve the heat dissipation capacity of the wireless charging device 300. Of course, in some other embodiments, one of the vents 12 can be provided on the sidewall 15, and the other vent 12 can be provided on the top wall 13 or the bottom wall 14.

[0068] It is understandable that when there are multiple vents 12, there are multiple baffles 20. Each vent 12 can be provided with a baffle 20 so that the vent 12 can be opened or blocked by the baffle 20. Multiple baffles 20 can block multiple vents 12 to prevent external water or dust from entering the inner cavity 11 of the housing 10 from the vent 12.

[0069] It is understood that the number of drive devices 30 can also be multiple, corresponding to the number of baffles 20, so that multiple drive devices 30 can drive multiple baffles 20 to move respectively. Of course, in some other embodiments, one drive device 30 can also drive multiple baffles 20 to move simultaneously.

[0070] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wireless charging device, characterized in that, The wireless charging device includes a housing, a baffle, an electromagnetic induction unit, and a driving device. The inner cavity of the housing is used to accommodate the electromagnetic induction unit. The housing has a vent that connects to the inner cavity of the housing and is used to dissipate heat from the electromagnetic induction unit. The baffle is movably connected to the housing and is communicatively connected to the driving device through a control unit. The control unit is used to send commands to the driving device to cause the driving device to drive the baffle to open or block the vent.

2. The wireless charging device according to claim 1, characterized in that, The baffle is slidably connected to the housing.

3. The wireless charging device according to claim 2, characterized in that, The baffle is attached to the inner side of the housing and is slidably disposed relative to the inner side.

4. The wireless charging device according to any one of claims 1-3, characterized in that, The drive device is located inside the housing.

5. The wireless charging device according to any one of claims 1-4, characterized in that, The housing includes a top wall and a bottom wall opposite each other in the thickness direction, and a side wall connecting the top wall and the bottom wall. The vent is opened on the side wall. The driving device is used to drive the baffle to move along the thickness direction to a first position or a second position on the side wall. The vent is opened at the first position on the side wall, and the first position is located on the side of the second position facing the top wall.

6. The wireless charging device according to claim 5, characterized in that, When the vent is open, the lower edge of the vent in the thickness direction is higher than the baffle.

7. The wireless charging device according to any one of claims 1-6, characterized in that, The driving device includes a drive gear, an auxiliary shaft, and a timing belt. The drive gear meshes with the timing belt, the auxiliary shaft supports the timing belt and assists in its rotation, and the baffle is connected to the timing belt. The drive gear drives the timing belt to rotate and moves the baffle.

8. The wireless charging device according to claim 7, characterized in that, The drive device includes one drive gear and multiple auxiliary shafts, the drive gear and multiple auxiliary shafts jointly support the timing belt, and the baffle is fixed to one side of the timing belt supported by two auxiliary shafts.

9. The wireless charging device according to claim 7 or 8, characterized in that, The housing includes a top wall and a bottom wall opposite each other in the thickness direction, two first side walls opposite each other in the length direction, and two second side walls opposite each other in the width direction. The vent is opened on the first side wall, the drive gear and the auxiliary shaft are disposed on the second side wall, and the timing belt is used to drive the baffle to move along the thickness direction.

10. The wireless charging device according to any one of claims 1-9, characterized in that, The control unit is used to send a command to the drive device to open the vent when the electromagnetic induction unit is working, so that the drive device drives the baffle to open the vent.

11. The wireless charging device according to any one of claims 1-9, characterized in that, The control unit is used to send a command to the drive device to open or block the vent based on the temperature inside the cavity of the housing or the water level outside the housing, so that the drive device drives the baffle to open or block the vent.

12. A charging device, characterized in that, The charging device includes a power supply and a wireless charging device as described in any one of claims 1-11. The power supply is used to power the wireless charging device, and the electromagnetic induction unit of the wireless charging device includes an electromagnetic transmitting coil for transmitting the magnetic field of the wireless charging device, wherein the magnetic field generates electrical energy through electromagnetic induction.

13. An electric vehicle, characterized in that, The electric vehicle includes a battery module and a wireless charging device as described in any one of claims 1-11. The wireless charging device is used to charge the battery module. The electromagnetic induction unit of the wireless charging device includes an electromagnetic receiving coil, which is used to receive a magnetic field, and the magnetic field generates electrical energy through electromagnetic induction.

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