Wireless charging module capable of charging safely, battery replacing cabinet and battery charging and replacing station

Abstract

The utility model belongs to the technical field of electric vehicle storage batteries, and particularly relates to a wireless charging module capable of charging safely, a battery replacing cabinet and a battery charging and replacing station, which comprises a battery pack and a wireless charger, and is characterized in that the battery pack comprises a wireless charging receiving device, a battery and a receiving coil, the wireless charging receiving device is respectively connected with the battery and the receiving coil, the wireless charger comprises a wireless charging transmitting device and a transmitting coil, the wireless charging transmitting device is respectively connected with the transmitting coil, and the wireless charging transmitting device is connected with a power supply module. According to the utility model, a wireless charging function is added on the basis of a wired charging battery pack, and non-contact wireless charging is realized through the matched wireless charger. Meanwhile, the wireless charging receiving module in the battery pack and the wireless charging transmitting device in the wireless charger monitor the battery state in the charging process in real time in a wireless communication mode, and the charging safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric vehicle battery technical field especially relates to a wireless charging module, battery swap cabinet and charging and battery swap station of safe charging. BACKGROUND

[0002] At present, most of the batteries on the market adopt wired charging mode, and the long-term plugging of the charging interface leads to easy loosening and poor contact, thereby causing fire, short circuit, overheating and even burning and other safety hazards. During the charging process, the battery and the charging circuit remain in a physical connection state, and once a fire occurs due to thermal runaway of the battery cell or aging of the power socket, the physical connection will cause the spread of the fire, causing large-scale property loss and personal safety injury. In addition, in wired charging, the real-time data of the battery pack cannot be interchanged with the charging system (charger or battery swap cabinet) due to damage to the data interface, and safety protection measures such as power-off and early warning cannot be taken at the first time in the case of battery abnormality, and wired connection needs to be manually unplugged once a fault occurs. At this time, a safe charging battery system that does not need physical connection and can monitor the charging state in real time is needed to replace the wired charging mode with safety hazards. SUMMARY

[0003] The utility model provides a wireless charging module, battery swap cabinet and charging and battery swap station of safe charging, to solve the safety problem mentioned in the background art.

[0004] The first technical scheme of the utility model is as follows: a wireless charging module for safe charging, comprising: a battery pack and a wireless charger, characterized in that the battery pack comprises: a wireless charging receiving device, a battery and a receiving coil, the wireless charging receiving device is connected with the battery and the receiving coil respectively;

[0005] The wireless charger comprises a wireless charging transmitting device and a transmitting coil, the wireless charging transmitting device is connected with the transmitting coil respectively, and the wireless charging transmitting device is connected with a power supply module;

[0006] The wireless charging transmitting device can convert the electric energy of the power supply module into resonant high-frequency alternating current through the transmitting coil, the wireless charging receiving device can convert the resonant high-frequency alternating current into charging current through the receiving coil to charge the battery, the wireless charging transmitting device can detect the electric data of the wireless charger, and when the electric data of the wireless charger is abnormal, the generation of resonant high-frequency alternating current is stopped, and the wireless charging receiving device can detect the electric data of the battery pack, and when the electric data of the battery pack is abnormal, the charging of the battery is stopped.

[0007] Further, the wireless charging receiving device is connected with the wireless charging transmitting device through wireless communication, the wireless charging receiving device can read the battery parameters of the battery and send to the wireless charging transmitting device, and the wireless charging transmitting device can verify the battery parameters.

[0008] Further, the wireless charging transmitting device comprises a transmitting end control module, a transmitting end measurement module, a transmitting end comparison protection module, a transmitting end communication module and a transmitting end modulation module.

[0009] The transmitting end control module is connected with the transmitting end measurement module, the transmitting end comparison protection module, the transmitting end communication module and the transmitting end modulation module respectively, the input end of the transmitting end modulation module is connected with the power supply module, and the output end of the transmitting end modulation module is connected with the transmitting coil.

[0010] The transmitting end control module is connected with the wireless charging receiving device through the transmitting end communication module.

[0011] The transmitting end measurement module is connected with the transmitting end comparison protection module.

[0012] Further, the input end of the transmitting end modulation module is connected with the power supply module through the charging interface.

[0013] Further, the transmitting end control module is connected with a signal interface.

[0014] Further, the transmitting end modulation module comprises an inverter circuit and a transmitting end resonance circuit, the input end of the inverter circuit is connected with the power supply module, the output end of the inverter circuit is connected with the transmitting end resonance circuit, the output end of the transmitting end resonance circuit is connected with the transmitting coil, and the control end of the inverter circuit is connected with the transmitting end control module.

[0015] Further, the wireless charging receiving device comprises a receiving end control module, a receiving end measurement module, a receiving end comparison protection module, a receiving end communication module, a receiving end switch module and a receiving end modulation module,

[0016] The receiving end control module is connected with the receiving end measurement module, the receiving end comparison protection module, the receiving end communication module, the receiving end switch module and the receiving end modulation module respectively, the input end of the receiving end modulation module is connected with the receiving coil, the output end of the receiving end modulation module is connected with the receiving switch module, and the receiving end measurement module is connected with the battery.

[0017] The receiving end measurement module is connected with the receiving end comparison protection module.

[0018] The receiving end control module is wirelessly connected with the wireless charging transmitting device through the receiving end communication module.

[0019] Further, the receiving end modulation module comprises a receiving end resonant circuit and a rectification filter circuit, the input end of the receiving end resonant circuit is connected with a receiving end coil, the output end of the receiving end resonant circuit is connected with the rectification filter circuit, one end of a receiving end switch module is connected with the output end of the rectification filter circuit, the other end of the receiving end switch module is connected with a battery, and the control end of the receiving end switch module is connected with the receiving end control module.

[0020] Further, the receiving end switch module is connected with a charge-discharge interface.

[0021] The second technical scheme of the utility model discloses a battery replacement cabinet, including charging bin and the wireless charging module of safe charging of any above-mentioned, the battery pack is placed in the charging bin, and the wireless charger is placed at the bottom of the charging bin.

[0022] The third technical scheme of the utility model discloses a charging and battery replacement station, comprising: charging pile and the battery replacement cabinet of above, the charging pile is connected with the battery replacement cabinet, the battery pack is placed in electric vehicle, and the wireless charger is placed on the charging pile.

[0023] The utility model discloses the wireless charging function is increased on the basis of wired charging battery pack, and through the wireless charger of matched set, the wireless charging of no contact type is realized.

[0024] The utility model discloses the wireless charging receiving module in battery pack and the wireless charging transmitting device in wireless charger through the mode of wireless communication, and the battery state in the charging process is monitored in real time, and the safety of charging is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structural diagram of the utility model.

[0026] Figure 2 It is the structural diagram of the utility model.

[0027] Figure 3 It is the structural diagram of the utility model.

[0028] Figure 4It is a schematic diagram of the charging bin in the utility model.

[0029] Figure 5 It is a structural schematic diagram of the charging and battery swapping station in the utility model.

[0030] Figure 6 It is a schematic diagram of the electric vehicle installing the battery pack in the utility model. DETAILED DESCRIPTION

[0031] In order to make the person skilled in the art better understand the utility model scheme, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment, and the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor should belong to the protection scope of the utility model.

[0032] In one of the technical schemes of the utility model, Figure 1 It is a structural diagram provided according to the specific structure of the wireless charging module of the utility model, as Figure 1 The utility model specifically includes:

[0033] The battery pack 2 and the wireless charger 1, wherein the battery pack 2 includes: a wireless charging receiving device 21, a battery 22, a receiving coil 23 and a battery pack shell, the wireless charging receiving device 21 is connected with the battery 22 and the receiving coil 23 respectively and is placed in the battery pack shell.

[0034] The wireless charger 1 includes a wireless charging transmitting device 11 and a transmitting coil 12, the wireless charging transmitting device 11 is connected with the transmitting coil 12 respectively, and the wireless charging transmitting device 11 is connected with a power supply module 3.

[0035] The wireless charging transmitting device 11 can convert the electric energy of the power supply module 3 into resonant high-frequency alternating current through the transmitting coil 12, the wireless charging receiving device 21 can convert the resonant high-frequency alternating current into charging current to charge the battery 22 through the receiving coil 23, the wireless charging transmitting device 11 can detect the electric data of the wireless charger 1, when the electric data of the wireless charger 1 is abnormal, stop generating resonant high-frequency alternating current, the wireless charging receiving device 21 can detect the electric data of the battery pack 2, when the electric data of the battery pack 2 is abnormal, stop charging the battery 22 and send a protection request signal to the wireless charging device.

[0036] The receiving coil 23 can be located on any side of the battery pack 2 shell, as long as the transmitting coil 12 of the matched wireless charger 1 is placed on the side of the side of the receiving coil 23 and faces the receiving coil 23, and charging can be performed.

[0037] The power supply module input end is an alternating current, and the output end is a direct current, and the power supply module includes a rectifier module.

[0038] In an embodiment of the utility model, the wireless charging receiving device 21 is in communication connection with the wireless charging transmitting device 11, the wireless charging receiving device 21 can read the battery parameters of the battery 22 and send to the wireless charging transmitting device 21, and the wireless charging transmitting device 21 can verify the battery parameters, and only when the verification is passed, the charging can be started.

[0039] The wireless charging receiving device 21 can read the battery parameters of the battery pack 2 in real time, such as the brand, model, production date, production batch, cycle number, service life expiration date of the battery 22, and when the wireless charger 1 is in non-contact connection charging, the wireless charger 1 first verifies the identity of the battery pack 2, to prevent illegal, expired, mismatched or non-compliant battery connection charging.

[0040] In an embodiment of the utility model, as shown in Figure 2 The wireless charging transmitting device 11 includes a transmitting end control module 111, a transmitting end measurement module 113, a transmitting end comparison protection module 114, a transmitting end communication module 112 and a transmitting end modulation module 115.

[0041] The transmitting end control module 111 is connected with the transmitting end measurement module 113, the transmitting end comparison protection module 114, the transmitting end communication module 112 and the transmitting end modulation module 115 respectively, the input end of the transmitting end modulation module 115 is connected with the power supply module 3, and the output end of the transmitting end modulation module 115 is connected with the transmitting coil 12.

[0042] The transmitting end control module 111 is in wireless communication connection with the wireless charging receiving device 21 through the transmitting end communication module 112.

[0043] The transmitting end control module 111 is connected with the transmitting end comparison protection module 114.

[0044] The transmitting end modulation module 115 is used for converting the electric energy of the power supply module 3 into resonant high-frequency alternating current.

[0045] The transmitting end measurement module 113 is configured to measure the electrical data of the wireless charger 1, and when the electrical data exceeds a normal range, the transmitting end control module 111 turns off the transmitting end modulation module 115.

[0046] The input end of the transmitting end modulation module 115 is connected with the power supply module 3 through the charging interface 13, and the transmitting end control module 111 is connected with a signal interface 14 for communication with other external circuits. The signal interface 14 can be a wired or wireless communication interface. Optionally, the charging interface 13 is internally provided with an electronic switch such as a MOS tube, an IGBT or a relay for turning on or off the power supply. The charging interface 13 internally provided with the electronic switch is controlled by the transmitting end control module 111 or the transmitting end comparison protection module 114.

[0047] The transmitting end modulation module 115 comprises an inverter circuit 116 and a transmitting end resonance circuit 117. The input end of the inverter circuit 116 is connected with the power supply module 3, the output end of the inverter circuit 116 is connected with the transmitting end resonance circuit 117, the output end of the transmitting end resonance circuit 117 is connected with the transmitting coil 12, and the control end of the inverter circuit 116 is connected with the transmitting end comparison protection module 114. The inverter circuit 116 comprises a switching component, and the inverter circuit 116 is a conventional technical means in the art, which will not be described here.

[0048] The inverter circuit 116 and the transmitting end resonance circuit 117 are connected, and the direct current power transmitted from the charging interface 13 is subjected to inverter processing to generate high-frequency alternating current, which is transmitted to the transmitting end resonance circuit 117. The output end of the transmitting end resonance circuit 117 is connected with the transmitting coil 12, and the high-frequency alternating current is efficiently conducted to the transmitting coil 12 through the first resonance circuit to generate an electromagnetic field. The electromagnetic coupling between the transmitting coil 12 and the receiving coil 23 in the battery pack 2 transmits the power to the receiving coil 23 of the battery pack 2.

[0049] The transmitting end control module 111 performs wireless communication with the receiving end control module 221 in the battery pack 2 to receive the real-time electrical data, temperature information, abnormal information and protection signals of the battery pack 2 to the wireless charger 1. The transmitting end control module 111 controls the inverter circuit 116 to control the current input to the transmitting coil 12 according to the received charging data, so as to control the charging current and the charging mode, and ensure that the charging current is in a safe charging range. The charging mode includes constant current charging mode, constant voltage charging mode and trickle charging mode, etc. The transmitting end control module 111 adjusts the charging current to a safe charging current range by receiving the cell temperature sent by the battery pack 2, and combining the measured environmental temperature and battery parameters. The transmitting end control module 111 can control the current input to the transmitting coil 12 by controlling the frequency of the inverter and the phase difference between the switching tubes in the inverter.

[0050] When the transmitting end control module 111 receives the protection request signal from the battery pack 2, it immediately stops the inverter circuit, interrupts the generation of high-frequency alternating current, and stops transmitting any electric energy to the transmitting coil 12, thereby cutting off the transmission of electric energy to the battery pack 2.

[0051] The transmitting end control module 111 simultaneously transmits the real-time electric data, battery parameters, temperature information, abnormal information, and protection signals of the battery pack 2 to the signal interface 14, which is transmitted to external devices or circuits, such as the control system of the battery replacement cabinet.

[0052] The transmitting end measurement module 113 measures the electric data of the wireless charging transmitting device 11 in real time and sends the measured data to the transmitting end control module 111. These electric data include the current and voltage of key points, as well as the ambient temperature and the temperature of high-heat components. When any of the measured data exceeds the normal range, the transmitting end control module 111 immediately stops the inverter circuit, interrupts the generation of high-frequency alternating current, thereby stopping the transmission of any electric energy to the transmitting coil 12, cutting off the transmission of electric energy to the battery pack 2, and protecting the wireless charging transmitting device 11. The transmitting end measurement module 113 can specifically be composed of corresponding sensors or measurement circuits, such as temperature sensors, voltage measurement circuits, current transformers, or current measurement circuits.

[0053] Specifically, the transmitting end control module can use a MCU (single-chip microcomputer), a DSP (signal processing chip), or other processors. It reads the values measured by the measurement module through a program, and then compares the values with the preset range through the program.

[0054] The transmitting end comparison protection module 114 is used to compare the signals measured by the transmitting end measurement module 113 with normal threshold signals, such as the current and voltage of key points. When it is greater than the normal threshold, the transmitting end comparison protection module 114 sends a protection signal to the transmitting end control module 111, which turns off the transmitting end modulation module 115. When any of the detected power supply parameters exceeds the normal threshold, the hardware circuit outputs a protection signal with a very short delay of nanoseconds or microseconds to the transmitting end control module 111, which immediately stops the output of the inverter or cuts off the direct-current electric energy imported by the charging interface 13, thereby stopping the transmission of any electric energy to the transmitting coil 12, cutting off the transmission of electric energy to the battery pack 2, and protecting the wireless charging transmitting device 11.

[0055] The transmitting end control module 111 also monitors whether the wireless communication is normal. When the wireless communication is interrupted for more than a few seconds or is abnormal, it will also trigger protection, stop the inverter circuit, and stop supplying power to the battery pack 2.

[0056] The transmitting end measurement module 113 measures the electrical data of the wireless charging transmitting device 11 in real time, and can be specifically composed of corresponding sensors or measurement circuits, such as a temperature sensor, a voltage measurement circuit, a current transformer or a current measurement circuit.

[0057] The transmitting end comparison protection module can be a comparator or a logic circuit.

[0058] It should be noted that two abnormality monitoring and protection mechanisms are adopted in the utility model, the first is to read the specific value measured by the transmitting end measurement module through the transmitting end control module, and then judge whether it is over standard, since there is a reading process, the protection speed is relatively slow, the second is to compare the signal output by the transmitting end measurement module with the normal threshold signal through the comparator, and then the output end of the comparator is connected to the transmitting end control module, when it is greater than the normal threshold, the transmitting end control module receives the corresponding protection signal, and the inverter is turned off, the process reacts fast, so that protection is carried out through the two modes.

[0059] In an embodiment of the utility model, as shown in Figure 3 The wireless charging receiving device 21 includes a receiving end control module 221, a receiving end measurement module 223, a receiving end comparison protection module 228, a receiving end communication module 222, a receiving end switch module 224 and a receiving end modulation module 225,

[0060] The receiving end control module 221 is connected with the receiving end measurement module 223, the receiving end comparison protection module 228, the receiving end communication module 222, the receiving end switch module 224 and the receiving end modulation module 225 respectively, the input end of the receiving end modulation module 225 is connected with the receiving coil 23, the output end of the receiving end modulation module 225 is connected with the receiving end switch module 224, the receiving end measurement module 223 is connected with the battery 22, and the receiving end switch module 224 is connected with the battery.

[0061] The receiving end control module 221 is connected with the wireless charging transmitting device 11 through the receiving end communication module 222.

[0062] The receiving end measurement module 223 is connected with the receiving end comparison protection module 228, and the receiving end comparison protection module 228 is connected with the control end of the receiving end switch module 224.

[0063] The receiving end modulation module 225 is used for converting the resonant high-frequency alternating current into direct current.

[0064] The receiving end measurement module 223 is configured to measure the electrical data and battery parameters of the battery pack 2. When the electrical data is abnormal, the receiving end control module 221 is configured to turn off the receiving end switch module 224.

[0065] The receiving end measurement module 223 is configured to send the real-time measured data to the receiving end control module 221. When the measured data exceeds the normal range, the receiving end control module 221 is configured to control the receiving end switch module 224 to disconnect the power supply from the battery 22. At the same time, the receiving end control module 221 is configured to send a protection signal to the transmitting end control module 111 through wireless communication. When the protection signal is received by the transmitting end control module 111, the charging is cut off.

[0066] The receiving end measurement module 223 is configured to send the electrical data to the receiving end comparison protection module 228. The receiving end comparison protection module 228 is configured to compare the electrical data signal with a normal threshold signal. When the electrical data signal exceeds the normal threshold signal, the receiving end comparison protection module 228 is configured to turn off the receiving end switch module 224 to cut off the power supply to the battery. The receiving end comparison protection module 228 is configured to output a protection signal through a hardware circuit with a very short delay of nanoseconds or microseconds to control the receiving end switch module 224 to quickly disconnect the power supply from the battery 22. At the same time, the receiving end comparison protection module 228 also protects the wireless charging receiving device 21. At the same time, when an abnormality occurs, the receiving end comparison protection module 228 sends a protection signal to the receiving end control module 221. The receiving end control module 221 is configured to send a protection signal to the transmitting end control module 111 through wireless communication. When the protection signal is received by the transmitting end control module 111, the charging is cut off.

[0067] The receiving end modulation module 225 includes a receiving end resonant circuit 226 and a rectifier filter circuit 227. The input end of the receiving end resonant circuit 226 is connected to the receiving end coil. The output end of the receiving end resonant circuit 226 is connected to the rectifier filter circuit 227. One end of the rectifier filter circuit 227 is connected to the receiving end switch module 224. The other end of the receiving end switch module 224 is connected to the battery 22. The control end of the receiving end switch module 224 is connected to the receiving end comparison protection module 228. The receiving end resonant circuit and the rectifier filter circuit 227 are both conventional technical means in the field, and thus will not be described here.

[0068] The receiving end switch module 224 is connected to the charge-discharge interface 24, and can be connected to a charger or a power consumption device through the charge-discharge interface 24.

[0069] The receiving end measurement module 223 measures the battery pack 2 in real time. The measured data includes charging current, charging voltage, temperature of the wireless charging receiving device 21, temperature of the battery 22, temperature of the receiving coil 23, etc. For this purpose, the receiving end measurement module 223 can be a corresponding sensor or a measurement circuit, such as a temperature sensor, a voltage measurement circuit, a current transformer or a current measurement circuit, etc.

[0070] The receiving end comparison protection module 228 detects whether the electrical data is abnormal in real time, including whether the charging current is overcurrent, whether the cell voltage is overvoltage, whether the cell temperature is overtemperature, whether the cell charging current is unbalanced, whether the cell connection is loose, etc. When an abnormality occurs, a protection signal is output by a hardware circuit with a very short delay of microseconds, and at the same time, the receiving end switch module 224 is disconnected to disconnect the power supply and the battery 22, which also protects the wireless charging receiving device 21. At the same time, when an abnormality occurs, the receiving end control module 221 sends a protection signal to the transmitting end control module 111 through wireless communication, and the transmitting end control module 111 cuts off the charging according to the protection signal.

[0071] The receiving end switch module 224 is connected to the rectifier filter circuit 227 to transmit the processed power to the battery 22 cell. The receiving end switch module 224 is also connected to the receiving end comparison protection module 228. When any abnormality is detected by the receiving end comparison protection module 228, the receiving end comparison protection module 228 quickly disconnects the receiving end switch module 224 to disconnect the power output by the rectifier filter circuit 227 and the cell, thereby protecting the cell.

[0072] The receiving end control module 221 is connected to the receiving end measurement module 223 and the receiving end comparison protection module 228 to obtain electrical data, temperature information, abnormal information and protection signals. At the same time, the receiving end control module 221 is connected to the transmitting end control module 111 of the wireless charger 1 through wireless communication to transmit electrical data, temperature information, abnormal information and protection signals to the wireless charger 1.

[0073] During the charging process of the wireless charger 1, the wireless charging receiving device 21 in the battery pack 2 can read the electrical data of the battery pack 2 in real time, such as charging voltage, charging current, charging temperature, protection voltage, protection current, etc., for monitoring and controlling the charging process.

[0074] During the charging process of the wireless charger 1, the safety detection and protection module in the wireless charging receiving device 21 can immediately stop charging when any abnormal condition occurs, such as overvoltage, overcurrent, overtemperature, etc.

[0075] The battery pack 2 with wireless charging function includes a charging and discharging interface 24. During the charging process with the wired charger, the comparison protection module included in the wireless charging receiver 21 can immediately stop charging in case of any abnormal situation such as excessive voltage, excessive current, or excessive temperature.

[0076] It should be noted that the receiver control module 221 can employ processors such as MCUs (microcontrollers) and DSPs (signal processing chips), while the receiver comparison protection module 228 can employ hardware circuits such as comparators and logic circuits. Meanwhile, the receiver switching module 224 can specifically be electronic switching devices such as MOSFETs, transistors, IGBTs, and relays. The receiver communication module 222 can specifically be a Bluetooth, Wi-Fi, or other radio frequency communication chip. In this embodiment, the operating modes of the receiver control module and the receiver comparison protection module are similar to those of the transmitter described above, and therefore will not be repeated here.

[0077] In the second technical solution of this utility model, a battery swapping cabinet is provided, including a charging compartment and a wireless charging module for safe charging as described above. The battery pack 2 is placed inside the charging compartment, and the wireless charger 1 is placed at the bottom of the charging compartment.

[0078] like Figure 4 As shown, the battery pack 2 is placed inside the charging compartment, and the wireless charger 1 is placed at the bottom of the charging compartment. The AC-to-DC module 31 in the charging compartment power module 32 converts the AC power from the grid into DC power and is connected to the charging interface 13 of the wireless charger 1. In this embodiment, the power supply module 3 is the charging compartment power module 32. The charging compartment control module 33 is connected to the signal interface 14 of the wireless charger 1. The specific technical solution of this utility model is the same as the above-described technical solution, and therefore will not be repeated here.

[0079] In the third technical solution of this utility model, a charging and swapping station is provided, such as... Figure 5 As shown, the system includes a charging pile 42 and the aforementioned battery swapping cabinet 4. The charging pile 42 is connected to the battery swapping cabinet 4. The battery pack 2 is placed inside the electric vehicle, and the wireless charger 1 is placed on the charging pile. More specifically, the receiving coil inside the battery pack is installed at the bottom of the vehicle's seat cushion compartment 41, while the transmitting coil of the wireless charger is installed at the top of the charging pile 42. It should be noted that the number of charging piles is not limited here.

[0080] The power supply line of the charging pile 42 is connected to the power supply module of the battery replacing cabinet 4 to provide power supply for the wireless charging pile.

[0081] Meanwhile, as shown in Figure 6 The battery pack can be directly placed at the bottom of the seat cushion compartment of the vehicle body, and the seat cushion is openable. This design enables the electric vehicle to take out the battery pack for battery replacement and directly use the wireless charging mode to charge the battery pack in the vehicle.

[0082] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A secure charging wireless charging module, comprising: The battery pack (2) and the wireless charger (1) are characterized in that the battery pack (2) comprises a wireless charging receiving device (21), a battery (22) and a receiving coil (23), and the wireless charging receiving device (21) is connected with the battery (22) and the receiving coil (23) respectively; The wireless charger (1) comprises a wireless charging transmitting device (11) and a transmitting coil (12), and the wireless charging transmitting device (11) is connected with the transmitting coil (12) respectively, and the wireless charging transmitting device (11) is connected with a power supply module (3); The wireless charging transmitting device (11) can convert the power of the power supply module (3) into resonant high-frequency alternating current through the transmitting coil (12), the wireless charging receiving device (21) can convert the resonant high-frequency alternating current into charging current to charge the battery (22) through the receiving coil (23), the wireless charging transmitting device (11) can detect the electrical data of the wireless charger (1), and when the electrical data of the wireless charger (1) is abnormal, the generation of resonant high-frequency alternating current is stopped, and the wireless charging receiving device (21) can detect the electrical data of the battery pack (2), and when the electrical data of the battery pack (2) is abnormal, the charging of the battery (22) is stopped.

2. The safe-charging wireless charging module of claim 1, wherein, The wireless charging receiving device (21) is connected with the wireless charging transmitting device (11) through wireless communication, the wireless charging receiving device (21) can read the battery parameters of the battery (22) and send them to the wireless charging transmitting device (11), and the wireless charging transmitting device (11) can verify the battery parameters.

3. The safely charging wireless charging module of claim 2, wherein, The wireless charging transmitting device (11) comprises a transmitting end control module (111), a transmitting end measurement module (113), a transmitting end comparison protection module (114), a transmitting end communication module (112) and a transmitting end modulation module (115); The transmitting end control module (111) is connected with the transmitting end measurement module (113), the transmitting end comparison protection module (114), the transmitting end communication module (112) and the transmitting end modulation module (115) respectively, the input end of the transmitting end modulation module (115) is connected with the power supply module (3), and the output end of the transmitting end modulation module (115) is connected with the transmitting coil (12); The transmitting end control module (111) is connected with the wireless charging receiving device (21) through the transmitting end communication module (112) in wireless communication; The transmitting end measurement module (113) is connected with the transmitting end comparison protection module (114).

4. The safely charging wireless charging module of claim 3, wherein, The transmitting end control module (111) is connected with a signal interface (14).

5. The safely charging wireless charging module of claim 3, wherein, The transmitting end modulation module (115) comprises an inverter circuit (116) and a transmitting end resonant circuit (117), the input end of the inverter circuit (116) is connected with the power supply module (3), the output end of the inverter circuit (116) is connected with the transmitting end resonant circuit (117), the output end of the transmitting end resonant circuit (117) is connected with the transmitting coil (12), and the control end of the inverter circuit (116) is connected with the transmitting end control module (111).

6. The safely charging wireless charging module of claim 2, wherein, The wireless charging receiving device (21) comprises a receiving end control module (221), a receiving end measurement module (223), a receiving end comparison protection module (228), a receiving end communication module (222), a receiving end switch module (224) and a receiving end modulation module (225), The receiving end control module (221) is connected with the receiving end measurement module (223), the receiving end comparison protection module (228), the receiving end communication module (222), the receiving end switch module (224) and the receiving end modulation module (225) respectively, the input end of the receiving end modulation module (225) is connected with the receiving coil (23), the output end of the receiving end modulation module (225) is connected with the receiving switch module (224), and the receiving end measurement module (223) is connected with the battery (22); The receiving end measurement module (223) is connected with the receiving end comparison protection module (228), and the receiving end comparison protection module (228) is connected with the control end of the receiving end switch module (224); The receiving end control module (221) is wirelessly connected with the wireless charging transmitting device (11) through the receiving end communication module (222).

7. The safely charging wireless charging module of claim 6, wherein, The receiving end modulation module (225) comprises a receiving end resonant circuit (226) and a rectifier filter circuit (227), the input end of the receiving end resonant circuit (226) is connected with the receiving end coil, the output end of the receiving end resonant circuit (226) is connected with the rectifier filter circuit (227), one end of the rectifier filter circuit (227) is connected with the receiving end switch module (224), the other end of the receiving end switch module (224) is connected with the battery (22), and the control end of the receiving end switch module (224) is connected with the receiving end control module (221).

8. The safely charging wireless charging module of claim 7, wherein, The receiving end switch module (224) is connected with a charge-discharge interface (24).

9. A battery swap cabinet, characterized in that, It comprises: The battery pack (2) is arranged in the charging bin, and the wireless charger (1) is arranged at the bottom of the charging bin.

10. A charging and swapping station, characterized in that, It comprises: The battery pack (2) is arranged in the electric vehicle, and the wireless charger (1) is arranged on the charging pile.

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