Wireless communication method and device for vehicle and charging pile, equipment and medium

Abstract

The invention provides a wireless communication method and device for a vehicle and a charging pile, equipment and a medium, and the method comprises the steps: searching a currently available wireless charging pile in a designated wireless charging region when a to-be-charged vehicle enters the designated wireless charging region; one target wireless charging pile is selected from the searched wireless charging piles, so that a power battery in the to-be-charged vehicle obtains the wireless charging authority of the target wireless charging pile; searching a wireless communication unit of the target wireless charging pile by using the communication general management unit, and after the wireless communication unit is searched, establishing a wireless communication connection channel with the wireless communication unit through the communication general management unit; and the charging information of the power battery is sent to the target wireless charging pile through the communication connection channel, so that the target wireless charging pile performs wireless charging on the power battery according to the charging information. Through the method, wireless communication between the battery management system and the wireless charging pile is realized.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle technology, and in particular to a wireless communication method, device, equipment and medium between a vehicle and a charging pile. Background Art

[0002] At present, the power batteries in new energy electric vehicles usually need to be charged using dedicated charging piles. During each charging, the driver is generally required to manually insert the charging gun on the charging pile into the charging seat of the new energy electric vehicle, and after charging is completed, the driver is required to manually unplug the charging gun, which is a time-consuming and labor-intensive process. Based on this, wireless charging technology came into being.

[0003] At present, although wireless charging can be used to charge the power battery of new energy electric vehicles, there is no wireless communication method between the battery management system and the charging pile. When the power battery charging abnormality occurs and the power needs to be cut off, it cannot be cut off in time, which is less safe. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a communication method, device, equipment and medium between a vehicle and a charging pile, so as to realize wireless communication between a battery management system and a wireless charging pile during charging of a power battery using wireless charging, thereby improving the safety of the power battery.

[0005] In a first aspect, an embodiment of the present application provides a wireless communication method between a vehicle and a charging pile, the method being applied to a battery management system in a vehicle to be charged; the battery management system includes a communication general management unit; the method comprising:

[0006] When the vehicle to be charged enters the designated wireless charging area, searching for currently available wireless charging posts in the designated wireless charging area;

[0007] Select one of the target wireless charging piles from the searched wireless charging piles, so that the power battery in the vehicle to be charged obtains the wireless charging authority of the target wireless charging pile;

[0008] Using the communication general management unit to search for the wireless communication unit of the target wireless charging pile, and after searching for the wireless communication unit, establishing a wireless communication connection channel with the wireless communication unit through the communication general management unit;

[0009] The charging information of the power battery is sent to the target wireless charging pile through the communication connection channel, so that the target wireless charging pile wirelessly charges the power battery according to the charging information.

[0010] In combination with the first aspect, the embodiment of the present application provides a first possible implementation of the first aspect, wherein the method further includes:

[0011] When the charging stop condition is triggered, instruction information for stopping charging is sent to the target wireless charging pile through the communication connection channel, so that the target wireless charging pile stops wirelessly charging the power battery.

[0012] In combination with the first aspect, the embodiment of the present application provides a second possible implementation of the first aspect, wherein each battery cell in the power battery comprises a communication sub-management unit; the communication sub-management unit is used to send the battery cell status information of the battery cell to the communication general management unit; before sending the charging information of the power battery to the target wireless charging pile through the communication connection channel, the method further includes:

[0013] Receiving the cell status information sent by the communication sub-management unit in each of the cell through the communication general management unit;

[0014] The charging information of the power battery is generated according to the battery cell status information of each battery cell.

[0015] In combination with the second possible implementation of the first aspect, the embodiment of the present application provides a third possible implementation of the first aspect, wherein the battery management system further includes a first inductive charging unit, and each of the wireless charging piles includes a respective second inductive charging unit; and the method of enabling the target wireless charging pile to wirelessly charge the power battery according to the charging information includes:

[0016] The alternating magnetic field provided by the second inductive charging unit is converted into a first alternating current by the first inductive charging unit; wherein the second inductive charging unit is used to convert the alternating current provided by the target wireless charging pile into the alternating magnetic field according to the charging information;

[0017] The first alternating current is converted into a first direct current by an AC-DC converter in the first inductive charging unit, so as to wirelessly charge the power battery using the first direct current.

[0018] In combination with the third possible implementation of the first aspect, the embodiment of the present application provides a fourth possible implementation of the first aspect, wherein the battery management system further includes an inductive power supply unit; and the method further includes:

[0019] converting the alternating magnetic field provided by the second inductive charging unit into a second alternating current by the inductive power supply unit;

[0020] Converting the second alternating current into a second direct current by an AC-DC converter in the inductive power supply unit;

[0021] The voltage of the second direct current is stepped down by a first DC-DC converter in the inductive power supply unit, and the stepped-down second direct current is used to power the communication general management unit and each of the communication sub-management units.

[0022] In combination with the first aspect, an embodiment of the present application provides a fifth possible implementation of the first aspect, wherein a second DC-DC converter is provided in each of the wireless charging piles; the second DC-DC converter is used to step down the third direct current provided by the target wireless charging pile, and use the stepped-down third direct current to power the wireless communication unit.

[0023] In combination with the fifth possible implementation of the first aspect, the embodiment of the present application provides a sixth possible implementation of the first aspect, wherein the charging stop condition includes any one of the following:

[0024] The battery state of charge of the power battery is less than the maximum battery state of charge, and the temperature of the power battery exceeds a preset temperature threshold;

[0025] When the battery state of charge of the power battery is less than the maximum battery state of charge and the temperature of the power battery is within the normal temperature range, if the charging current of the power battery exceeds the preset current threshold or the charging voltage exceeds the preset voltage threshold, and the charging current of the power battery continues to exceed the preset current threshold or the charging voltage continues to exceed the preset voltage threshold after current limiting or voltage limiting regulation.

[0026] In a second aspect, an embodiment of the present application further provides a wireless communication device between a vehicle and a charging pile, the device being applied to a battery management system in a vehicle to be charged; the battery management system comprising a communication general management unit; the device comprising:

[0027] A search module, configured to search for currently available wireless charging posts within a designated wireless charging area when the vehicle to be charged enters the designated wireless charging area;

[0028] A selection module, configured to select one of the target wireless charging piles from the searched wireless charging piles, so that the power battery in the vehicle to be charged obtains the wireless charging permission of the target wireless charging pile;

[0029] An establishing module, configured to use the communication general management unit to search for the wireless communication unit of the target wireless charging pile, and after searching for the wireless communication unit, establish a wireless communication connection channel with the wireless communication unit through the communication general management unit;

[0030] The charging module is used to send the charging information of the power battery to the target wireless charging pile through the communication connection channel, so that the target wireless charging pile can wirelessly charge the power battery according to the charging information.

[0031] In combination with the second aspect, the embodiment of the present application provides a first possible implementation of the second aspect, wherein the device further includes:

[0032] The sending module is used to send a stop charging instruction message to the target wireless charging pile through the communication connection channel when a stop charging condition is triggered, so that the target wireless charging pile stops wirelessly charging the power battery.

[0033] In combination with the second aspect, the embodiment of the present application provides a second possible implementation of the second aspect, wherein each battery cell in the power battery comprises a communication sub-management unit; the communication sub-management unit is used to send the battery cell status information of the battery cell to the communication general management unit; the device further comprises:

[0034] A receiving module, used for receiving the battery cell status information sent by the communication sub-management unit in each battery cell through the communication general management unit before the charging module sends the charging information of the power battery to the target wireless charging pile through the communication connection channel;

[0035] A generating module is used to generate charging information of the power battery according to the battery cell status information of each battery cell.

[0036] In combination with the second possible implementation of the second aspect, the embodiment of the present application provides a third possible implementation of the second aspect, wherein the battery management system further includes a first inductive charging unit, and each of the wireless charging piles includes a respective second inductive charging unit; when the charging module is used to enable the target wireless charging pile to wirelessly charge the power battery according to the charging information, it is specifically used to:

[0037] The alternating magnetic field provided by the second inductive charging unit is converted into a first alternating current by the first inductive charging unit; wherein the second inductive charging unit is used to convert the alternating current provided by the target wireless charging pile into the alternating magnetic field according to the charging information;

[0038] The first alternating current is converted into a first direct current by an AC-DC converter in the first inductive charging unit, so as to wirelessly charge the power battery using the first direct current.

[0039] In combination with the third possible implementation of the second aspect, the embodiment of the present application provides a fourth possible implementation of the second aspect, wherein the battery management system further includes an inductive power supply unit; and the device further includes:

[0040] a first conversion module, configured to convert the alternating magnetic field provided by the second inductive charging unit into a second alternating current through the inductive power supply unit;

[0041] A second conversion module, configured to convert the second alternating current into a second direct current through an AC-DC converter in the inductive power supply unit;

[0042] The first step-down module is used to step down the voltage of the second direct current through the first DC-DC converter in the inductive power supply unit, and use the stepped-down second direct current to power the communication general management unit and each of the communication sub-management units.

[0043] In combination with the second aspect, an embodiment of the present application provides a fifth possible implementation of the second aspect, wherein a second DC-DC converter is provided in each of the wireless charging piles; the second DC-DC converter is used to step down the third direct current provided by the target wireless charging pile, and use the stepped-down third direct current to power the wireless communication unit.

[0044] In combination with the first possible implementation manner of the second aspect, the embodiment of the present application provides a sixth possible implementation manner of the second aspect, wherein the charging stop condition includes any one of the following:

[0045] The battery state of charge of the power battery is less than the maximum battery state of charge, and the temperature of the power battery exceeds a preset temperature threshold;

[0046] When the battery state of charge of the power battery is less than the maximum battery state of charge and the temperature of the power battery is within the normal temperature range, if the charging current of the power battery exceeds the preset current threshold or the charging voltage exceeds the preset voltage threshold, and the charging current of the power battery continues to exceed the preset current threshold or the charging voltage continues to exceed the preset voltage threshold after current limiting or voltage limiting regulation.

[0047] In a third aspect, an embodiment of the present application further provides an electronic device, comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate through the bus, and when the machine-readable instructions are executed by the processor, the steps in any possible implementation of the first aspect above are performed.

[0048] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps in any possible implementation of the first aspect described above are executed.

[0049] The embodiment of the present application provides a method, device, equipment and medium for communication between a vehicle and a charging pile, wherein the method is applied to a battery management system in a vehicle to be charged; the battery management system includes a communication general management unit; when the vehicle to be charged enters a designated wireless charging area, the currently available wireless charging piles in the designated wireless charging area are searched; one of the target wireless charging piles is selected from the searched wireless charging piles, so that the power battery in the vehicle to be charged obtains the wireless charging authority of the target wireless charging pile; the wireless communication unit of the target wireless charging pile is searched using the communication general management unit, and after the wireless communication unit is searched, a wireless communication connection channel is established between the communication general management unit and the wireless communication unit; the charging information of the power battery is sent to the target wireless charging pile through the communication connection channel, so that the target wireless charging pile performs wireless charging on the power battery according to the charging information. Through this method, in the process of using the target wireless charging pile to wirelessly charge the power battery of the vehicle to be charged, a wireless communication connection channel is established between the communication general management unit in the battery management system and the wireless communication unit in the target wireless charging pile, so that wireless communication between the battery management system and the target wireless charging pile can be realized, which is conducive to improving the safety of the power battery.

[0050] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 A flow chart of a wireless communication method between a vehicle and a charging pile provided in an embodiment of the present application is shown;

[0053] Figure 2 A schematic diagram of the structure of a battery management system and a target wireless charging pile provided in an embodiment of the present application is shown;

[0054] Figure 3 A schematic diagram of the structure of a wireless communication device between a vehicle and a charging pile provided in an embodiment of the present application is shown;

[0055] Figure 4 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0056] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0057] Considering that at present, although wireless charging can be used to charge the power battery of new energy electric vehicles, there is no wireless communication method between the battery management system and the charging pile. When the power battery charging abnormality occurs and the power needs to be cut off, it cannot be cut off in time, and the safety is low. Based on this, the embodiments of the present application provide a wireless communication method, device, equipment and medium involving a vehicle and a charging pile, so as to realize wireless communication between the battery management system and the target wireless charging pile in the process of charging the power battery using wireless charging, thereby improving the safety of the power battery, which is described by an embodiment below.

[0058] To facilitate understanding of this embodiment, a wireless communication method between a vehicle and a charging pile disclosed in an embodiment of this application is first described in detail. The method is applied to a battery management system in a vehicle to be charged; the battery management system includes a communication management unit. Figure 1 As shown, the method includes the following steps S101-S104:

[0059] S101: When a vehicle to be charged enters a designated wireless charging area, searching for currently available wireless charging posts in the designated wireless charging area.

[0060] In this embodiment, the vehicle to be charged refers to a new energy electric vehicle with low power that needs to be charged. The designated wireless charging area is generally located near the wireless charging pile, and each designated wireless charging area may have only one wireless charging pile or multiple wireless charging piles.

[0061] Currently available wireless charging stations refer to those that can work normally and have no faults.

[0062] S102: Selecting one of the target wireless charging piles from the searched wireless charging piles, so that the power battery in the vehicle to be charged obtains the wireless charging authority of the target wireless charging pile.

[0063] In this embodiment, one of the currently available wireless charging piles is randomly selected as the target wireless charging pile. After the power battery in the vehicle to be charged obtains the wireless charging authority of the target wireless charging pile, the power batteries of other vehicles will not be able to obtain the wireless charging authority of the target wireless charging pile.

[0064] S103: using the communication management unit to search for the wireless communication unit of the target wireless charging pile, and after searching for the wireless communication unit, establishing a wireless communication connection channel with the wireless communication unit through the communication management unit.

[0065] S104: Sending charging information of the power battery to a target wireless charging pile through a communication connection channel, so that the target wireless charging pile wirelessly charges the power battery according to the charging information.

[0066] In this embodiment, the charging information may include charging power, charging voltage, charging current and other information.

[0067] In a possible implementation, the following steps may also be performed:

[0068] When the condition for stopping charging is triggered, an instruction message for stopping charging is sent to the target wireless charging pile through the communication connection channel, so that the target wireless charging pile stops wirelessly charging the power battery.

[0069] The charging stop condition includes any of the following:

[0070] The battery state of charge (SOC) of the power battery is less than the maximum battery state of charge, and the temperature of the power battery exceeds a preset temperature threshold;

[0071] When the battery state of charge of the power battery is less than the maximum battery state of charge and the temperature of the power battery is within the normal temperature range, if the charging current of the power battery exceeds the preset current threshold or the charging voltage exceeds the preset voltage threshold, and the charging current of the power battery continues to exceed the preset current threshold or the charging voltage continues to exceed the preset voltage threshold after current limiting or voltage limiting regulation.

[0072] In this embodiment, the battery state of charge, which may also be referred to as the remaining power, reflects the ratio of the remaining dischargeable power of the power battery after use or long-term idleness to the power in the fully charged state, and is usually expressed in percentage.

[0073] The maximum value of the battery state of charge is a preset value, for example, 90%.

[0074] The charging current and charging voltage of the power battery in this embodiment are the actual charging current and charging voltage of the power battery.

[0075] In a possible implementation, Figure 2 In the above, each cell in the power battery includes a communication sub-management unit; the communication sub-management unit is used to send the cell status information of the cell to the communication general management unit. Before executing step S104, the charging information of the power battery can also be determined according to the following steps:

[0076] Receiving the cell status information sent by the communication sub-management unit in each cell through the communication general management unit;

[0077] The charging information of the power battery is generated according to the cell status information of each cell.

[0078] In a possible implementation, Figure 2 The battery management system further includes a first inductive charging unit, and each wireless charging pile includes a respective second inductive charging unit; when executing step S104 so that the target wireless charging pile performs wireless charging on the power battery according to the charging information, the following steps S1041-S1042 may be specifically performed:

[0079] S1041: converting the alternating magnetic field provided by the second inductive charging unit into a first alternating current through the first inductive charging unit; wherein the second inductive charging unit is used to convert the alternating current provided by the target wireless charging pile into an alternating magnetic field according to the charging information;

[0080] S1042: Convert the first alternating current into a first direct current through an AC-DC converter in the first inductive charging unit, so as to wirelessly charge the power battery using the first direct current.

[0081] In this embodiment, the second inductive charging unit converts the alternating current provided by the target wireless charging pile into an alternating magnetic field according to the charging information. The first inductive charging unit converts the alternating magnetic field provided by the second inductive charging unit into a first alternating current. The AC-DC converter in the first inductive charging unit converts the first alternating current into a first direct current, and uses the first direct current to wirelessly charge the power battery.

[0082] In a possible implementation, Figure 2 As shown, the battery management system also includes an inductive power supply unit; the inductive power supply unit can supply power to the communication general management unit and each communication sub-management unit in the following manner:

[0083] converting the alternating magnetic field provided by the second inductive charging unit into a second alternating current by the inductive power supply unit;

[0084] converting the second alternating current into a second direct current by an AC-DC converter in the inductive power supply unit;

[0085] The voltage of the second direct current is stepped down by the first DC-DC converter in the inductive power supply unit, and the stepped-down second direct current is used to power the communication general management unit and each communication sub-management unit.

[0086] In a possible implementation, a second DC-DC converter is provided in each wireless charging pile; the second DC-DC converter can power the wireless communication unit in the target charging pile in the following manner:

[0087] The second DC-DC converter is used to step down the third direct current provided by the target wireless charging pile, and use the stepped-down third direct current to power the wireless communication unit.

[0088] Based on the same technical concept, the present application also provides a wireless communication device between a vehicle and a charging pile, the device is applied to a battery management system in a vehicle to be charged; the battery management system includes a communication general management unit; Figure 3 As shown, the device comprises:

[0089] The search module 301 is used to search for currently available wireless charging piles in the designated wireless charging area when the vehicle to be charged enters the designated wireless charging area;

[0090] A selection module 302 is used to select one of the target wireless charging piles from the searched wireless charging piles, so that the power battery in the vehicle to be charged obtains the wireless charging permission of the target wireless charging pile;

[0091] An establishing module 303 is used to use the communication general management unit to search for the wireless communication unit of the target wireless charging pile, and after searching for the wireless communication unit, establish a wireless communication connection channel with the wireless communication unit through the communication general management unit;

[0092] The charging module 304 is used to send the charging information of the power battery to the target wireless charging pile through the communication connection channel, so that the target wireless charging pile wirelessly charges the power battery according to the charging information.

[0093] Optionally, the device further comprises:

[0094] The sending module is used to send a stop charging instruction message to the target wireless charging pile through the communication connection channel when a stop charging condition is triggered, so that the target wireless charging pile stops wirelessly charging the power battery.

[0095] Optionally, each battery cell in the power battery comprises a communication sub-management unit; the communication sub-management unit is used to send the battery cell status information of the battery cell to the communication general management unit; the device further comprises:

[0096] A receiving module, used for receiving the battery cell status information sent by the communication sub-management unit in each battery cell through the communication general management unit before the charging module 304 sends the charging information of the power battery to the target wireless charging pile through the communication connection channel;

[0097] A generating module is used to generate charging information of the power battery according to the battery cell status information of each battery cell.

[0098] Optionally, the battery management system further includes a first inductive charging unit, and each of the wireless charging piles includes a respective second inductive charging unit; when the charging module 304 is used to enable the target wireless charging pile to wirelessly charge the power battery according to the charging information, it is specifically used to:

[0099] The alternating magnetic field provided by the second inductive charging unit is converted into a first alternating current by the first inductive charging unit; wherein the second inductive charging unit is used to convert the alternating current provided by the target wireless charging pile into the alternating magnetic field according to the charging information;

[0100] The first alternating current is converted into a first direct current by an AC-DC converter in the first inductive charging unit, so as to wirelessly charge the power battery using the first direct current.

[0101] Optionally, the battery management system further includes an inductive power supply unit; and the device further includes:

[0102] a first conversion module, configured to convert the alternating magnetic field provided by the second inductive charging unit into a second alternating current through the inductive power supply unit;

[0103] A second conversion module, configured to convert the second alternating current into a second direct current through an AC-DC converter in the inductive power supply unit;

[0104] The first step-down module is used to step down the voltage of the second direct current through the first DC-DC converter in the inductive power supply unit, and use the stepped-down second direct current to power the communication general management unit and each of the communication sub-management units.

[0105] Optionally, a second DC-DC converter is provided in each of the wireless charging piles; the second DC-DC converter is used to step down the third direct current provided by the target wireless charging pile, and use the stepped-down third direct current to power the wireless communication unit.

[0106] Optionally, the charging stop condition includes any one of the following:

[0107] The battery state of charge of the power battery is less than the maximum battery state of charge, and the temperature of the power battery exceeds a preset temperature threshold;

[0108] When the battery state of charge of the power battery is less than the maximum battery state of charge and the temperature of the power battery is within the normal temperature range, if the charging current of the power battery exceeds the preset current threshold or the charging voltage exceeds the preset voltage threshold, and the charging current of the power battery continues to exceed the preset current threshold or the charging voltage continues to exceed the preset voltage threshold after current limiting or voltage limiting regulation.

[0109] Figure 4 A structural diagram of an electronic device provided for an embodiment of the present application includes: a processor 401, a memory 402 and a bus 403, wherein the memory 402 stores machine-readable instructions executable by the processor 401. When the electronic device runs the above-mentioned information processing method, the processor 401 communicates with the memory 402 through the bus 403, and the processor 401 executes the machine-readable instructions to perform the method steps described in Example 1.

[0110] The embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method steps described in the first embodiment are executed.

[0111] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices, electronic devices, and computer-readable storage media can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0112] In the several embodiments provided in the present application, it should be understood that the disclosed methods, devices, electronic devices and computer-readable storage media can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation. For example, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or modules can be electrical, mechanical or other forms.

[0113] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0114] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0115] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application can essentially be embodied in the form of a software product, or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0116] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A wireless communication method between a vehicle and a charging pile, characterized in that: The method is applied to a battery management system in a vehicle to be charged; The battery management system includes a communication management unit; the method includes: When the vehicle to be charged enters the designated wireless charging area, searching for currently available wireless charging posts in the designated wireless charging area; Select one of the target wireless charging piles from the searched wireless charging piles, so that the power battery in the vehicle to be charged obtains the wireless charging authority of the target wireless charging pile; Using the communication general management unit to search for the wireless communication unit of the target wireless charging pile, and after searching for the wireless communication unit, establishing a wireless communication connection channel with the wireless communication unit through the communication general management unit; The charging information of the power battery is sent to the target wireless charging pile through the communication connection channel, so that the target wireless charging pile wirelessly charges the power battery according to the charging information.

2. The method according to claim 1, characterized in that: The method further comprises: When the charging stop condition is triggered, instruction information for stopping charging is sent to the target wireless charging pile through the communication connection channel, so that the target wireless charging pile stops wirelessly charging the power battery.

3. The method according to claim 1, characterized in that: Each battery cell in the power battery comprises a communication sub-management unit; the communication sub-management unit is used to send the battery cell status information of the battery cell to the communication general management unit; Before sending the charging information of the power battery to the target wireless charging pile through the communication connection channel, the method further includes: Receiving the cell status information sent by the communication sub-management unit in each of the cell through the communication general management unit; The charging information of the power battery is generated according to the battery cell status information of each battery cell.

4. The method according to claim 3, characterized in that: The battery management system further includes a first inductive charging unit, and each of the wireless charging piles includes a respective second inductive charging unit; and the method of enabling the target wireless charging pile to wirelessly charge the power battery according to the charging information includes: The alternating magnetic field provided by the second inductive charging unit is converted into a first alternating current by the first inductive charging unit; wherein the second inductive charging unit is used to convert the alternating current provided by the target wireless charging pile into the alternating magnetic field according to the charging information; The first alternating current is converted into a first direct current by an AC-DC converter in the first inductive charging unit, so as to wirelessly charge the power battery using the first direct current.

5. The method according to claim 4, characterized in that: The battery management system also includes an inductive power supply unit; the method also includes: converting the alternating magnetic field provided by the second inductive charging unit into a second alternating current by the inductive power supply unit; Converting the second alternating current into a second direct current by an AC-DC converter in the inductive power supply unit; The voltage of the second direct current is stepped down by a first DC-DC converter in the inductive power supply unit, and the stepped-down second direct current is used to power the communication general management unit and each of the communication sub-management units.

6. The method according to claim 1, characterized in that: A second DC-DC converter is provided in each of the wireless charging piles; the second DC-DC converter is used to reduce the voltage of the third direct current provided by the target wireless charging pile, and use the reduced third direct current to power the wireless communication unit.

7. The method according to claim 2, characterized in that: The charging stop condition includes any one of the following: The battery state of charge of the power battery is less than the maximum battery state of charge, and the temperature of the power battery exceeds a preset temperature threshold; When the battery state of charge of the power battery is less than the maximum battery state of charge and the temperature of the power battery is within the normal temperature range, if the charging current of the power battery exceeds the preset current threshold or the charging voltage exceeds the preset voltage threshold, and the charging current of the power battery continues to exceed the preset current threshold or the charging voltage continues to exceed the preset voltage threshold after current limiting or voltage limiting regulation.

8. A wireless communication device between a vehicle and a charging pile, characterized in that: The device is applied to a battery management system in a vehicle to be charged; The battery management system includes a communication management unit; the device includes: A search module, configured to search for currently available wireless charging posts within a designated wireless charging area when the vehicle to be charged enters the designated wireless charging area; A selection module, configured to select one of the target wireless charging piles from the searched wireless charging piles, so that the power battery in the vehicle to be charged obtains the wireless charging permission of the target wireless charging pile; An establishing module, configured to use the communication general management unit to search for the wireless communication unit of the target wireless charging pile, and after searching for the wireless communication unit, establish a wireless communication connection channel with the wireless communication unit through the communication general management unit; The charging module is used to send the charging information of the power battery to the target wireless charging pile through the communication connection channel, so that the target wireless charging pile can wirelessly charge the power battery according to the charging information.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are executed by the processor, the steps of the method as described in any one of claims 1 to 7 are performed.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are executed.

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