Charging voltage control method, device and electronic equipment

Abstract

The present application provides a charging voltage control method, device, and electronic device. This method obtains a first voltage operating range based on the starting voltage at charging startup. After obtaining the current charging voltage value output during the charging process of the electric vehicle, if it is detected that the current charging voltage value meets a preset voltage switching condition, a voltage switching request is broadcast. A main charging module in the charging assembly is determined based on the module addresses of each charging module preconfigured in the charging assembly. After the main charging module determines a corresponding voltage switching time based on the broadcast voltage switching request, a voltage switching instruction is broadcast. Based on the voltage switching instruction, the first charging module is controlled to switch from the first voltage operating range to which the current charging voltage value belongs to to a second voltage operating range after restarting. The voltage switching time determined by the main charging module in the charging assembly is different for each charging module. This method overcomes the problem of charging voltage interruption during charging and improves charging efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle charging, and in particular to a method, device and electronic device for controlling charging voltage. Background Art

[0002] With the development of technology, in order to take into account the wide output voltage operating range and the needs of wide range and constant power, due to the limitations of the existing charging structure, most of the products on the market adopt high and low voltage segmentation.

[0003] During the charging process of an electric vehicle, when the output voltage of the charging module reaches the high-low voltage switching point of the charging module, the charging module will need to perform high-low voltage switching. However, the charging module that performs high-low voltage switching needs to stop charging the electric vehicle, then output high-low voltage switching, and then start charging the electric vehicle. It can be seen that the charging module will cause charging interruption when performing high-low voltage switching, reducing charging efficiency. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a charging voltage control method, device and electronic device to solve the above-mentioned problems existing in the prior art, avoid charging interruption caused by high and low voltage switching of the charging module, and improve charging efficiency.

[0005] In a first aspect, a method for controlling a charging voltage is provided. The method is applied to a first charging module of a charging assembly, where the charging assembly includes at least one charging module. The method may include:

[0006] Obtaining a first voltage operating range according to a starting voltage at the start of charging, and obtaining a current charging voltage value output during the charging process of the electric vehicle;

[0007] If it is detected that the current charging voltage value meets the preset voltage switching condition, a voltage switching request is broadcast; the voltage switching request is a request to switch the first voltage operating range to which the current charging voltage value belongs to into a second voltage operating range;

[0008] determining a main charging module in the charging assembly based on module addresses of the charging modules pre-configured in the charging assembly; and broadcasting a voltage switching instruction corresponding to the corresponding voltage switching time after the main charging module determines a corresponding voltage switching time based on the broadcasted voltage switching request;

[0009] Based on the voltage switching instruction, the first charging module itself is controlled to switch the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting, so as to charge the electric vehicle with the current charging voltage value under the second voltage operating range; the voltage switching time of each charging module determined by the main charging module in the charging component is different.

[0010] In an optional implementation, after the main charging module determines the corresponding voltage switching time based on the broadcast voltage switching request, broadcasting a voltage switching instruction corresponding to the corresponding voltage switching time includes:

[0011] If it is determined that the first charging module itself is the main charging module, and the charging assembly includes a second charging module in addition to the first charging module, then determining the voltage switching time of the second charging module and the voltage switching time of the main charging module itself based on the voltage switching request broadcast by the second charging module and the voltage switching request broadcast by the main charging module itself;

[0012] generating a voltage switching instruction for the second charging module and a voltage switching instruction for the main charging module based on a sequence of a voltage switching time of the second charging module and a voltage switching time of the main charging module;

[0013] The generated voltage switching instructions are broadcasted in sequence.

[0014] In an optional implementation, the method further includes:

[0015] If it is determined that the first charging module itself is not a main charging module, and the charging assembly includes a second charging module in addition to the first charging module, the voltage switching instruction broadcast by the main charging module is received.

[0016] In an optional implementation, the method further includes:

[0017] If it is determined that the first charging module itself is not the main charging module and has not received the voltage switching instruction broadcast by the main charging module within a preset first time period, the control itself switches the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting.

[0018] In an optional implementation, if it is detected that the current charging voltage value meets the preset voltage switching condition, after broadcasting the voltage switching request, the method further includes:

[0019] If the charging component only includes the first charging module, a loan request is sent to a charging control unit CCU, where the loan request is used to request the charging control unit CCU to loan a charging module from another charging component except the charging component;

[0020] Receive the module address of the seconded charging module sent by the charging control unit CCU.

[0021] In an optional implementation, after controlling the first charging module itself to switch the first voltage operating range to which the current charging voltage value belongs to into the second voltage operating range after restarting, the method further includes:

[0022] If it is determined that the first charging module itself is the main charging module, and it is detected that the current charging voltage values output by each charging module in the charging component belong to the second voltage operating range, a secondment release indication is sent to the charging control unit CCU, and the release indication is used to instruct the charging control unit CCU to release the seconded charging module.

[0023] In an optional implementation, if it is detected that the current charging voltage value meets the preset voltage switching condition, broadcasting a voltage switching request includes:

[0024] If it is detected within a preset second time period that the current charging voltage value differs from a preset voltage switching threshold corresponding to the first voltage operating range by a preset voltage value, a voltage switching request is broadcast.

[0025] In an optional implementation, determining a main charging module in the charging component based on module addresses of pre-configured charging modules in the charging component includes:

[0026] The charging module corresponding to the smallest module address among the module addresses corresponding to the charging modules is determined as the main charging module in the charging component.

[0027] In a second aspect, a charging voltage control device is provided. The device is applied to a first charging module of a charging assembly, wherein the charging assembly includes at least one charging module. The device may include:

[0028] An acquiring unit, configured to acquire a first voltage operating range according to a starting voltage at the start of charging, and acquire the first voltage operating range of a current charging voltage value output during charging;

[0029] a broadcasting unit, configured to broadcast a voltage switching request if it is detected that the current charging voltage value satisfies a preset voltage switching condition; the voltage switching request is a request to switch the first voltage operating range to which the current charging voltage value belongs to into a second voltage operating range;

[0030] a determining unit, configured to determine a main charging module in the charging assembly based on module addresses of the charging modules pre-configured in the charging assembly;

[0031] a broadcasting unit, configured to broadcast a voltage switching instruction corresponding to the corresponding voltage switching time after the main charging module determines the corresponding voltage switching time based on the broadcasted voltage switching request;

[0032] A control unit is used to control the first charging module itself to switch the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting based on the voltage switching instruction, so as to charge the electric vehicle with the current charging voltage value under the second voltage operating range; the voltage switching time of each charging module determined by the main charging module in the charging component is different.

[0033] In an optional implementation, the acquiring unit is specifically configured to, if it is determined that the first charging module itself is the main charging module and the charging assembly includes a second charging module in addition to the first charging module, determine the voltage switching time of the second charging module and the voltage switching time of the main charging module itself based on the voltage switching request broadcast by the second charging module and the voltage switching request broadcast by the main charging module itself;

[0034] and, based on the order of the voltage switching time of the second charging module and the voltage switching time of the main charging module itself, generating a voltage switching instruction for the second charging module and a voltage switching instruction for the main charging module itself;

[0035] The broadcast unit is specifically used to broadcast the generated voltage switching instructions in sequence.

[0036] In an optional implementation, the apparatus further includes: a receiving unit;

[0037] The receiving unit is configured to receive the voltage switching instruction broadcast by the main charging module if it is determined that the first charging module itself is not the main charging module and the charging component includes a second charging module in addition to the first charging module.

[0038] In an optional implementation, the control unit is further used to control itself to switch the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting if it is determined that the first charging module itself is not the main charging module and has not received the voltage switching instruction broadcast by the main charging module within a preset first time period.

[0039] In an optional implementation, the apparatus further includes: a sending unit;

[0040] the sending unit is configured to send a loan request to a charging control unit CCU if the charging assembly includes only the first charging module, wherein the loan request is configured to request the charging control unit CCU to loan a charging module from another charging assembly except the charging assembly;

[0041] The receiving unit is further configured to receive the module address of the seconded charging module sent by the charging control unit.

[0042] In an optional implementation, the sending unit is also used to send a release indication to the CCU if it is determined that the first charging module itself is the main charging module and it is detected that the current charging voltage values output by each charging module in the charging component belong to the second voltage operating range. The release indication is used to instruct the charging control unit CCU to release the seconded charging module.

[0043] In an optional implementation, the broadcast unit is further specifically configured to broadcast a voltage switching request if it is detected that the current charging voltage value differs from a preset voltage switching threshold corresponding to the first voltage operating range by a preset voltage value within a preset second time period.

[0044] In an optional implementation, the determining unit is specifically configured to determine the charging module corresponding to the smallest module address among the module addresses corresponding to the charging modules as the main charging module in the charging component.

[0045] In a third aspect, an electronic device is provided, the electronic device including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0046] Memory for storing computer programs;

[0047] The processor is configured to implement any of the method steps described in the first aspect when executing a program stored in the memory.

[0048] In a fourth aspect, a computer-readable storage medium is provided, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, any of the method steps described in the first aspect is implemented.

[0049] The charging voltage control method provided by an embodiment of the present invention obtains a first voltage operating range based on the starting voltage at charging startup, obtains the current charging voltage value output during charging, and then broadcasts a voltage switching request if it is detected that the current charging voltage value meets a preset voltage switching condition. The voltage switching request is a request to switch the first voltage operating range to which the current charging voltage value belongs to to a second voltage operating range. The method also determines a main charging module in the charging assembly based on the module addresses of each charging module preconfigured in the charging assembly. After obtaining the corresponding voltage switching time determined by the main charging module based on the broadcast voltage switching request, the method broadcasts a voltage switching instruction corresponding to the corresponding voltage switching time. Based on the voltage switching instruction, the method controls the first charging module to switch the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting, so as to charge the electric vehicle using the current charging voltage value within the second voltage operating range. The voltage switching time determined by the main charging module in the charging assembly is different for each charging module. This method overcomes the problem of charging voltage interruption during charging and improves charging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. 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 relevant drawings can be obtained based on these drawings without creative work.

[0051] Figure 1 A schematic diagram of a charging system architecture provided in an embodiment of the present application;

[0052] Figure 2 A schematic diagram of a charging process for an electric vehicle provided in an embodiment of the present application;

[0053] Figure 3 A flow chart of a method for controlling a charging voltage provided in an embodiment of the present application;

[0054] Figure 4 A schematic structural diagram of a charging assembly provided in an embodiment of the present application;

[0055] Figure 5 A schematic diagram of a secondment process provided in an embodiment of the present application;

[0056] Figure 6 A schematic diagram of the structure of a charging voltage control device provided in an embodiment of the present application;

[0057] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0059] The charging voltage control method provided in the embodiment of the present application is applied to a charging module, which is located at Figure 1 In the charging system architecture shown, the charging system may further include a charging control unit (CCU), at least one power distribution unit (PDU), and charging components corresponding to each PDU, each charging component including at least one charging module.

[0060] The CCU is connected to the PDU and charging components through the CAN communication bus. The PDU and charging components have a one-to-one correspondence. For example, PDU1 is connected to charging component 1 through the CCU, PDU2 is connected to charging component 2 through the CCU, and so on.

[0061] Each PDU is electrically connected to each charging module in the corresponding charging assembly through a relay or contactor; the CCU sends a power request to the PDU through a power allocation algorithm based on the power request received via the PDU, so that the PDU allocates the corresponding charging module and controls the channel between the PDU and the allocated charging module to be attracted or disconnected.

[0062] During the charging phase, the CCU allocates the appropriate number of charging modules to form a charging assembly based on the power requirements of each PDU, achieving a balanced distribution of all internal energy. The PDU is then connected to the charging gun, which charges the corresponding charging vehicle through the charging gun.

[0063] like Figure 2 As shown, after the rechargeable battery in the electric vehicle is connected to the charging system, such as a charging pile, the following steps need to be performed:

[0064] Step S210: The PDU obtains the required voltage and current required for charging the battery.

[0065] The Battery Management System (BMS) in the electric vehicle performs a handshake with the target PDU in the charging system. That is, the BMS and the target PDU exchange communication messages so that the target PDU obtains the required voltage and current from the BMS.

[0066] Step S220 : The CCU obtains the required voltage and current of the BMS and allocates corresponding charging components to the target PDU.

[0067] The CCU obtains the required voltage and required current of the rechargeable battery through the data connection with the PDU, and based on the required voltage and required current of the BMS, determines the number of charging modules for charging the rechargeable battery and the output power of the corresponding charging modules, that is, the output voltage and output current of the corresponding charging modules, from the configured multiple charging modules, and establishes a charging component corresponding to the target PDU, which includes the determined charging module for charging the rechargeable battery.

[0068] Step S230 : The CCU instructs the charging module to start charging, so that the charging module charges the rechargeable battery through the PDU based on the required voltage and required current of the BMS.

[0069] Furthermore, the charging voltage control method provided in this application is applied in the following scenarios:

[0070] If the charging voltage output by the charging module when starting charging falls within the preset low-voltage operating range, that is, the required voltage of the BMS is low, then the charging module in the charging component will charge the rechargeable battery in low-voltage charging mode at this time; because as the SOC of the rechargeable battery gradually increases, the voltage value of the rechargeable battery also gradually increases, and the voltage value output by the charging module is clamped by the rechargeable battery to remain equal to the rechargeable battery voltage. When the voltage value output by the charging module is about to reach the maximum voltage value of the low-voltage operating range, it is necessary to switch the charging module from low-voltage charging mode to high-voltage charging mode in advance, that is, switch the low-voltage range to the high-voltage range, so as to continuously output the charging voltage. If the switch is not made, after the rechargeable battery voltage reaches the maximum voltage of the low-voltage operating range of the charging module, the charging module will not be able to continue charging the rechargeable battery.

[0071] If the charging voltage value output by the charging module when starting charging falls within the preset high-voltage operating range, that is, the required voltage of the BMS is higher, it indicates that the charging module in the charging component is charging the rechargeable battery in the high-voltage charging mode at this time; and when the rechargeable battery voltage is low and is about to reach the lowest voltage value of the high-voltage operating range, it is necessary to switch the charging module from the high-voltage charging mode to the low-voltage charging mode in advance, that is, switch the high-voltage operating range to the low-voltage operating range, so that the charging module can output the optimal voltage value. If the switch is not made, the power conversion efficiency of the charging module and the output voltage output capacity will be at a low level, resulting in a certain amount of energy waste.

[0072] However, in order to solve the above-mentioned problems, the relevant technology requires that the charging modules of the same charging component be switched at the same time when switching the charging mode. Since the switching of the charging mode requires the charging module to be shut down and restarted first, the switched charging mode is directly used when the machine is started. The process of shutting down and restarting the machine will cause the charging voltage to be interrupted during the charging process.

[0073] In order to solve the interruption problem existing in the related technology, the charging voltage control method provided in the present application determines the master-slave relationship of the charging modules in the same charging component, determines the voltage switching time of the main charging module and the voltage switching time of the slave charging module which is different from the voltage switching time of the main charging module, thereby sequentially realizing the charging mode switching of each charging module in the charging component, overcoming the problem of charging voltage interruption during the charging process and improving the charging efficiency.

[0074] The preferred embodiments of the present application are described below in conjunction with the drawings in the specification. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention. In addition, the embodiments and features in the embodiments of the present application can be combined with each other if there is no conflict.

[0075] Figure 3 Schematic diagram of a flow chart of a method for controlling charging voltage provided by an embodiment of the present invention. Figure 3 As shown, the execution subject of the method is any charging module in any charging component, and the method may include:

[0076] Step S310: obtaining a first voltage operating range when charging is started, and obtaining a current charging voltage value output during the charging process.

[0077] During the charging process of the electric vehicle, the charging module monitors and obtains the current charging voltage value output by itself and the first voltage operating range to which the current charging voltage value belongs in real time.

[0078] The first voltage operating range during the charging process is a high voltage operating range or a low voltage operating range. The high voltage operating range and the low voltage operating range have intersecting voltage values, for example, the low voltage operating range may be 0-515V, and the high voltage operating range may be 485-950V.

[0079] Step S320: Determine whether the current charging voltage value meets the preset voltage switching condition, and broadcast a voltage switching request.

[0080] In a specific implementation, it is detected that the current charging voltage value does not meet the preset voltage switching condition;

[0081] If it is detected that the current charging voltage value does not meet the preset voltage switching condition, the electric vehicle continues to be charged using the current charging voltage value corresponding to the first voltage operating range;

[0082] If it is detected that the current charging voltage value meets the preset voltage switching condition, a voltage switching request is broadcast; wherein the voltage switching request is a request to switch the first voltage operating range to which the current charging voltage value belongs to into the second voltage operating range.

[0083] The second voltage operating range during the charging process is a high voltage operating range or a low voltage operating range, and when the first voltage operating range is a high voltage operating range, the second voltage operating range is a low voltage operating range, and when the first voltage operating range is a low voltage operating range, the second voltage operating range is a high voltage operating range.

[0084] Specifically, in order to ensure that voltage switching is achieved before the current charging voltage value reaches the preset voltage switching threshold, if it is detected that the current charging voltage value differs from the preset voltage switching threshold corresponding to the first voltage operating range by a preset voltage value, a voltage switching request is broadcast, such as broadcasting the voltage switching request to the communication bus.

[0085] The voltage switching request may include a voltage switching request status. For example, if the charging module detects that the current charging voltage value meets the preset voltage switching condition, the voltage switching request status status value is 1; if the charging module detects that the current charging voltage value does not meet the preset voltage switching condition, the voltage switching request status status value is 2, and it can be considered that the charging module broadcasts a voltage switching clear request;

[0086] It should be noted that the corresponding charging module can regularly broadcast its own voltage switching request status carrying the target state value to the communication bus.

[0087] Among them, the preset voltage switching threshold represents the critical voltage value at which voltage switching can be performed. For example, when the first voltage operating range during the charging process is the high voltage operating range of 485-950V, the preset voltage switching threshold is the lowest voltage value of 485V in the high voltage operating range; when the first voltage operating range during the charging process is the low voltage operating range of 0-515V, the preset voltage switching threshold is the highest voltage value of 515V in the low voltage operating range.

[0088] Furthermore, in order to ensure the accuracy of voltage switching, it is necessary to continuously detect whether the current charging voltage value meets the preset voltage switching conditions within a period of time. If it is detected that the current charging voltage value differs from the preset voltage switching threshold corresponding to the first voltage operating range by a preset voltage value within the preset second time period, the voltage switching request is broadcast.

[0089] Step S330: Determine the main charging module in the charging assembly based on the module addresses of the charging modules pre-configured in the charging assembly.

[0090] In a specific implementation, the charging module corresponding to the smallest module address among the module addresses corresponding to the charging modules is determined as the main charging module in the charging component.

[0091] It can be understood that a main charging module in a charging component can be pre-configured, or the charging module corresponding to the largest module address among the module addresses corresponding to each charging module can be determined as the main charging module. The specific determination method can be determined according to actual business needs, and this application does not limit it here.

[0092] In one example, Figure 4 As shown, PDU0 charges battery 1, and the charging component corresponding to PDU0 is assigned 4 charging modules, and the addresses of the corresponding charging modules are 0, 2, 4 and 5. Among them, the charging module corresponding to address 0 is the master charging module; the charging modules with addresses 2, 4 and 5 are slave charging modules;

[0093] PDU1 charges Battery 2, and the charging component corresponding to PDU1 is assigned three charging modules, with addresses 1, 3, and 6. The charging module corresponding to address 1 is the master charging module, and the charging modules with addresses 3 and 6 are slave charging modules.

[0094] Step S340: After the main charging module determines the corresponding voltage switching time based on the broadcast voltage switching request, it broadcasts a voltage switching instruction corresponding to the corresponding voltage switching time.

[0095] In order to ensure that the charging component always has an output voltage, that is, the output voltage is uninterrupted, the main charging module needs to determine the voltage switching time between itself and the slave charging module. Since each charging module in the charging component may be a main charging module or a slave charging module, it is necessary to first determine whether any charging module (or the first charging module) is the main charging module.

[0096] In a specific implementation, it is detected whether the first charging module is the main charging module;

[0097] (1) If it is determined that the first charging module itself is the main charging module, and the charging component includes a second charging module in addition to the first charging module, the first charging module determines the voltage switching time of the second charging module and the voltage switching time of the main charging module itself based on the voltage switching request broadcast by the second charging module and the voltage switching request broadcast by the main charging module itself; wherein the second charging module may include at least one charging module.

[0098] Specifically, since the second charging module is a charging module in the charging assembly, it needs to broadcast a voltage switching request after detecting that its current charging voltage value meets the preset voltage switching condition.

[0099] The first charging module, serving as the main charging module, may determine the voltage switching time for the second charging module and itself to perform voltage switching based on the time sequence of the request time of the second charging module broadcasting the voltage switching request and the request time of its own broadcasting the voltage switching request.

[0100] Among them, if the request time of the second charging module broadcasting the voltage switching request is the same as the request time of its own broadcasting the voltage switching request, the main charging module can determine the voltage switching time for the second charging module and itself to perform voltage switching according to the pre-configured switching strategy.

[0101] It should be noted that the pre-configured switching strategy can be a switching principle of first executing the slave charging module, that is, the second charging module, and then executing the main charging module switching, or it can be a switching principle of first executing the main charging module and then executing the slave charging module switching. This application does not impose any restrictions.

[0102] Afterwards, based on the sequence of the voltage switching time of the second charging module and the voltage switching time of the main charging module itself, the voltage switching instruction of the second charging module and its own voltage switching instruction are generated, and the generated voltage switching instructions are broadcast in sequence, that is, a voltage switching instruction is generated and the voltage switching instruction is directly broadcast.

[0103] (2) If it is determined that the first charging module itself is not the main charging module, and the charging assembly includes a second charging module in addition to the first charging module, then receive the voltage switching instruction broadcast by the main charging module.

[0104] Furthermore, since the charging component includes only one charging module, if voltage switching is to be performed, the charging component cannot achieve uninterrupted output voltage, so the charging module needs to be seconded.

[0105] In a specific implementation, if the charging assembly includes only the first charging module, which is the main charging module of the charging assembly, a loan request is sent to the charging control unit CCU. The loan request is used to request the CCU to loan a charging module from another charging assembly except the charging assembly.

[0106] The CCU can send the module address of the first charging module to the borrowed charging module, and also send the module address of the borrowed charging module to each charging module in the charging assembly. This allows the original charging modules and the borrowed charging module in the charging assembly to obtain each other's module addresses. The charging assembly now includes the first charging module and the borrowed charging module, thereby re-determining the primary charging module of the charging assembly. The process then returns to the step of detecting whether the first charging module is the primary charging module.

[0107] In one example, Figure 5As shown, the charging component corresponding to PDU0 is assigned 4 charging modules, and the addresses of the corresponding charging modules are 0, 2, 4 and 5. Among them, the charging module corresponding to address 0 is the master charging module; the charging modules with addresses 2, 4 and 5 are slave charging modules;

[0108] The charging component corresponding to PDU1 is assigned one charging module, and the corresponding charging module address is 1. The charging module corresponding to address 1 sends a secondment request to the CCU and receives the module address of the charging module corresponding to address 5 from the CCU. At this time, the charging component includes the charging module corresponding to address 1 and the charging module corresponding to address 5.

[0109] Step S350: Based on the voltage switching instruction, the first charging module is controlled to switch the first voltage operating range to which the current charging voltage value belongs to into the second voltage operating range after restarting.

[0110] After the first voltage operating range is switched to the second voltage operating range, the electric vehicle can be charged using the current charging voltage value within the second voltage operating range.

[0111] For example, during the charging process, the current voltage value is 500V, which belongs to the low voltage operating range of 0-515V. If the current charging voltage value meets the preset voltage switching condition, the current voltage value of 500V will be switched to the high voltage operating range of 485-950V.

[0112] In one embodiment, if the first charging module is determined not to be the main charging module and does not receive a voltage switching instruction broadcast by the main charging module within a preset first time period, i.e., the voltage switching instruction times out, then in order to continue charging the electric vehicle, the first charging module may be controlled to switch from the first voltage operating range to the second voltage operating range after restarting.

[0113] In one embodiment, after the charging module is borrowed, if it is determined that the first charging module itself is the main charging module, and it is detected that the current charging voltage values output by each charging module in the charging component belong to the second voltage operating range, that is, the voltage switching operations of each charging module are all completed, then a borrowing release indication is sent to the charging control unit. The release indication is used to instruct the charging control unit to release the borrowed charging module, and the other charging modules in the charging component delete the module address of the borrowed charging module. The other charging modules are charging modules in the charging component other than the borrowed charging module.

[0114] In one embodiment, each charging module in a charging component can be timed, such as broadcasting its own voltage switching request status carrying a status value to the communication bus every 400 ms, and the main charging module can be timed, such as 3s, to obtain the voltage switching request broadcasted by the main charging module and the slave charging module from the communication bus once to determine the corresponding voltage switching time, thereby generating a corresponding voltage switching instruction.

[0115] The charging voltage control method provided by an embodiment of the present invention obtains the current charging voltage value output during the charging process of an electric vehicle and the first voltage operating range to which the current charging voltage value belongs. If it is detected that the current charging voltage value meets a preset voltage switching condition, a voltage switching request is broadcast. The voltage switching request is a request to switch the first voltage operating range to which the current charging voltage value belongs to to a second voltage operating range. The method determines a main charging module in the charging assembly based on the module addresses of each charging module preconfigured in the charging assembly. After the main charging module determines a corresponding voltage switching time based on the broadcast voltage switching request, the method broadcasts a voltage switching instruction corresponding to the corresponding voltage switching time. Based on the voltage switching instruction, the method controls the first charging module to switch the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting, so as to charge the electric vehicle using the current charging voltage value within the second voltage operating range. The voltage switching time determined by the main charging module in the charging assembly is different for each charging module. This method overcomes the problem of charging voltage interruption during the charging process and improves charging efficiency.

[0116] Corresponding to the above method, an embodiment of the present invention further provides a device for controlling charging voltage, such as Figure 6 As shown, the apparatus includes: an acquisition unit 610, a broadcast unit 620, a determination unit 630 and a control unit 640;

[0117] An acquisition unit 610 is configured to acquire a first voltage operating range according to a starting voltage at the start of charging, and to acquire a current charging voltage value output during the charging process;

[0118] a broadcast unit 620 configured to broadcast a voltage switching request if it is detected that the current charging voltage value satisfies a preset voltage switching condition; the voltage switching request is a request to switch the first voltage operating range to which the current charging voltage value belongs to to a second voltage operating range;

[0119] a determining unit 630 configured to determine a main charging module in the charging assembly based on module addresses of the charging modules pre-configured in the charging assembly;

[0120] The broadcasting unit 620 is further configured to broadcast a voltage switching instruction corresponding to the corresponding voltage switching time after the main charging module determines the corresponding voltage switching time based on the broadcasted voltage switching request;

[0121] The control unit 640 is used to control the first charging module itself to switch the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting based on the voltage switching instruction, so as to charge the electric vehicle with the current charging voltage value under the second voltage operating range; the voltage switching time of each charging module determined by the main charging module in the charging component is different.

[0122] In an optional implementation, the acquiring unit 610 is specifically configured to, if it is determined that the first charging module itself is the main charging module and the charging assembly includes a second charging module in addition to the first charging module, determine the voltage switching time of the second charging module and the voltage switching time of the main charging module itself based on the voltage switching request broadcast by the second charging module and the voltage switching request broadcast by the main charging module itself;

[0123] and, based on the order of the voltage switching time of the second charging module and the voltage switching time of the main charging module itself, generating a voltage switching instruction for the second charging module and a voltage switching instruction for the main charging module itself;

[0124] The broadcast unit 620 is specifically configured to broadcast the generated voltage switching instructions in sequence.

[0125] In an optional implementation, the apparatus further includes: a receiving unit 650;

[0126] The receiving unit 650 is configured to receive the voltage switching instruction broadcast by the main charging module if it is determined that the first charging module itself is not the main charging module and the charging assembly includes a second charging module in addition to the first charging module.

[0127] In an optional implementation, the control unit 640 is also used to control itself to switch the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting if it is determined that the first charging module itself is not the main charging module and has not received the voltage switching instruction broadcast by the main charging module within a preset first time period.

[0128] In an optional implementation, the apparatus further includes: a sending unit 660;

[0129] a sending unit 660 configured to send a loan request to a charging control unit CCU if the charging assembly includes only the first charging module, wherein the loan request is used to request the charging control unit CCU to loan a charging module from another charging assembly other than the charging assembly;

[0130] The receiving unit 650 is further configured to receive the module address of the seconded charging module sent by the charging control unit CCU.

[0131] In an optional implementation, the sending unit 660 is also used to send a release indication to the CCU if it is determined that the first charging module itself is the main charging module and it is detected that the current charging voltage values output by each charging module in the charging component belong to the second voltage operating range. The release indication is used to instruct the charging control unit CCU to release the seconded charging module.

[0132] In an optional implementation, the broadcast unit is further configured to broadcast a voltage switching request if it is detected that the current charging voltage value differs from a preset voltage switching threshold corresponding to the first voltage operating range by a preset voltage value within a preset second time period;

[0133] In an optional implementation, the determining unit 630 is specifically configured to determine the charging module corresponding to the smallest module address among the module addresses corresponding to the charging modules as the main charging module in the charging component.

[0134] The functions of the functional units of the charging voltage control device provided in the above embodiments of the present invention can be achieved through the above method steps. Therefore, the specific working process and beneficial effects of each unit in the charging voltage control device provided in the embodiment of the present invention are not repeated here.

[0135] The embodiment of the present invention further provides an electronic device, such as Figure 7 As shown, it includes a processor 710 , a communication interface 720 , a memory 730 and a communication bus 740 , wherein the processor 710 , the communication interface 720 , and the memory 730 communicate with each other via the communication bus 740 .

[0136] Memory 730, for storing computer programs;

[0137] The processor 710 is configured to execute the program stored in the memory 730 by performing the following steps:

[0138] Obtaining a first voltage operating range according to a starting voltage at the start of charging, and obtaining a current charging voltage value output during the charging process of the electric vehicle;

[0139] If it is detected that the current charging voltage value meets the preset voltage switching condition, a voltage switching request is broadcast; the voltage switching request is a request to switch the first voltage operating range to which the current charging voltage value belongs to into a second voltage operating range;

[0140] determining a main charging module in the charging assembly based on module addresses of the charging modules pre-configured in the charging assembly; and broadcasting a voltage switching instruction corresponding to the corresponding voltage switching time after the main charging module determines a corresponding voltage switching time based on the broadcasted voltage switching request;

[0141] Based on the voltage switching instruction, the first charging module itself is controlled to switch the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting, so as to charge the electric vehicle with the current charging voltage value under the second voltage operating range; the voltage switching time of each charging module determined by the main charging module in the charging component is different.

[0142] In an optional implementation, after the main charging module determines the corresponding voltage switching time based on the broadcast voltage switching request, broadcasting a voltage switching instruction corresponding to the corresponding voltage switching time includes:

[0143] If it is determined that the first charging module itself is the main charging module, and the charging assembly includes a second charging module in addition to the first charging module, then determining the voltage switching time of the second charging module and the voltage switching time of the main charging module itself based on the voltage switching request broadcast by the second charging module and the voltage switching request broadcast by the main charging module itself;

[0144] generating a voltage switching instruction for the second charging module and a voltage switching instruction for the main charging module based on a sequence of a voltage switching time of the second charging module and a voltage switching time of the main charging module;

[0145] The generated voltage switching instructions are broadcasted in sequence.

[0146] In an optional implementation, the method further includes:

[0147] If it is determined that the first charging module itself is not a main charging module, and the charging assembly includes a second charging module in addition to the first charging module, the voltage switching instruction broadcast by the main charging module is received.

[0148] In an optional implementation, the method further includes:

[0149] If it is determined that the first charging module itself is not the main charging module and has not received the voltage switching instruction broadcast by the main charging module within a preset first time period, the control itself switches the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting.

[0150] In an optional implementation, if it is detected that the current charging voltage value meets the preset voltage switching condition, after broadcasting the voltage switching request, the method further includes:

[0151] If the charging component only includes the first charging module, a loan request is sent to a charging control unit CCU, where the loan request is used to request the charging control unit CCU to loan a charging module from another charging component except the charging component;

[0152] Receive the module address of the seconded charging module sent by the charging control unit CCU.

[0153] In an optional implementation, after controlling the first charging module itself to switch the first voltage operating range to which the current charging voltage value belongs to into the second voltage operating range after restarting, the method further includes:

[0154] If it is determined that the first charging module itself is the main charging module, and it is detected that the current charging voltage values output by each charging module in the charging component belong to the second voltage operating range, a secondment release indication is sent to the charging control unit CCU, and the release indication is used to instruct the charging control unit CCU to release the seconded charging module.

[0155] In an optional implementation, if it is detected that the current charging voltage value meets the preset voltage switching condition, broadcasting a voltage switching request includes:

[0156] If it is detected that the current charging voltage value differs from the preset voltage switching threshold corresponding to the first voltage operating range by a preset voltage value within the preset second time period, a voltage switching request is broadcast.

[0157] In an optional implementation, determining a main charging module in the charging component based on module addresses of pre-configured charging modules in the charging component includes:

[0158] The charging module corresponding to the smallest module address among the module addresses corresponding to the charging modules is determined as the main charging module in the charging component.

[0159] The communication bus mentioned above can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is used in the figure, but this does not mean that there is only one bus or only one type of bus.

[0160] The communication interface is used for communication between the above electronic device and other devices.

[0161] The memory may include random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage. Alternatively, the memory may be at least one storage device located away from the processor.

[0162] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.

[0163] The implementation methods and beneficial effects of the various components of the electronic device in the above embodiments to solve the problems can be found in Figure 3 The various steps in the embodiments shown are implemented, therefore, the specific working process and beneficial effects of the electronic device provided by the embodiments of the present invention are not repeated here.

[0164] In another embodiment provided by the present invention, a computer-readable storage medium is further provided, in which instructions are stored. When the computer-readable storage medium is run on a computer, the computer executes the charging voltage control method described in any of the above embodiments.

[0165] In another embodiment of the present invention, a computer program product including instructions is provided. When the computer program product is run on a computer, the computer executes the charging voltage control method described in any one of the above embodiments.

[0166] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the embodiments of the present application can be implemented in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the embodiments of the present application can be implemented in the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0167] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0168] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0169] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0170] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0171] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims and their equivalents, the embodiments of the present application are also intended to include these modifications and variations.

Claims

1. A method for controlling a charging voltage, characterized in that: The method is applied to a first charging module of a charging assembly, wherein the charging assembly includes at least one charging module, and the method includes: Obtaining a first voltage operating range based on a starting voltage when charging is started, and obtaining a current charging voltage value output during the charging process; If it is detected that the current charging voltage value meets the preset voltage switching condition, a voltage switching request is broadcast; the voltage switching request is a request to switch the first voltage operating range to which the current charging voltage value belongs to into a second voltage operating range; determining a main charging module in the charging assembly based on module addresses of the charging modules pre-configured in the charging assembly; and broadcasting a voltage switching instruction corresponding to the corresponding voltage switching time after the main charging module determines a corresponding voltage switching time based on the broadcasted voltage switching request; Based on the voltage switching instruction, the first charging module is controlled to switch the first voltage operating range to which the current charging voltage value belongs to to a second voltage operating range after restarting, so as to charge the electric vehicle at the current charging voltage value within the second voltage operating range; the voltage switching time of each charging module determined by the main charging module in the charging assembly is different; Wherein, after the main charging module determines the corresponding voltage switching time based on the broadcast voltage switching request, broadcasting a voltage switching instruction corresponding to the corresponding voltage switching time includes: If it is determined that the first charging module itself is the main charging module, and the charging assembly includes a second charging module in addition to the first charging module, then based on the voltage switching request broadcast by the second charging module and the voltage switching request broadcast by the main charging module itself, determine the voltage switching time of the second charging module and the voltage switching time of the main charging module itself; based on the sequence of the voltage switching time of the second charging module and the voltage switching time of the main charging module itself, generate a voltage switching instruction for the second charging module and the voltage switching instruction of the main charging module itself; and broadcast the generated voltage switching instructions in sequence; The method further comprises: If it is determined that the first charging module itself is not a main charging module, and the charging assembly includes a second charging module in addition to the first charging module, receiving a voltage switching instruction broadcast by the main charging module; If it is determined that the first charging module itself is not the main charging module and has not received the voltage switching instruction broadcast by the main charging module within a preset first time period, the control itself switches the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting.

2. The method according to claim 1, wherein If it is detected that the current charging voltage value meets the preset voltage switching condition, after broadcasting the voltage switching request, the method further includes: If the charging component only includes the first charging module, sending a loan request to the charging control unit, wherein the loan request is used to request the charging control unit to loan a charging module from other charging components except the charging component; Receive the module address of the seconded charging module sent by the charging control unit.

3. The method according to claim 2, wherein After controlling the first charging module to switch the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting, the method further includes: If it is determined that the first charging module itself is the main charging module, and it is detected that the current charging voltage values output by each charging module in the charging component belong to the second voltage operating range, a secondment release indication is sent to the charging control unit, and the release indication is used to instruct the charging control unit to release the seconded charging module.

4. The method according to claim 1, wherein If it is detected that the current charging voltage value meets the preset voltage switching condition, a voltage switching request is broadcasted, including: If it is detected within a preset second time period that the current charging voltage value differs from a preset voltage switching threshold corresponding to the first voltage operating range by a preset voltage value, a voltage switching request is broadcast.

5. The method according to claim 1, wherein Determining a main charging module in the charging assembly based on module addresses of each charging module pre-configured in the charging assembly includes: The charging module corresponding to the smallest module address among the module addresses corresponding to the charging modules is determined as the main charging module in the charging component.

6. A charging voltage control device, characterized in that: The device is applied to a first charging module of a charging assembly, wherein the charging assembly includes at least one charging module, and the device includes: an acquiring unit, for acquiring a first voltage operating range according to a starting voltage at the start of charging, and acquiring a current charging voltage value output during the charging process; a broadcasting unit, configured to broadcast a voltage switching request if it is detected that the current charging voltage value satisfies a preset voltage switching condition; the voltage switching request is a request to switch the first voltage operating range to which the current charging voltage value belongs to into a second voltage operating range; a determining unit, configured to determine a main charging module in the charging assembly based on module addresses of the charging modules pre-configured in the charging assembly; The broadcasting unit is further configured to broadcast a voltage switching instruction corresponding to the corresponding voltage switching time after the main charging module determines the corresponding voltage switching time based on the broadcasted voltage switching request; a control unit, configured to control the first charging module to switch the first voltage operating range to which the current charging voltage value belongs to to a second voltage operating range after restarting based on the voltage switching instruction, so as to charge the electric vehicle using the current charging voltage value within the second voltage operating range; the voltage switching time of each charging module determined by the main charging module in the charging assembly being different; The broadcast unit is specifically configured to: if it is determined that the first charging module itself is the main charging module, and the charging assembly includes a second charging module in addition to the first charging module, determine the voltage switching time of the second charging module and the voltage switching time of the main charging module itself based on the voltage switching request broadcast by the second charging module and the voltage switching request broadcast by the main charging module itself; generate a voltage switching instruction for the second charging module and the voltage switching instruction of the main charging module itself based on the sequence of the voltage switching time of the second charging module and the voltage switching time of the main charging module itself; and broadcast the generated voltage switching instructions in sequence; Wherein, the device further comprises: a receiving unit; The receiving unit is configured to: if it is determined that the first charging module itself is not a main charging module, and the charging assembly includes a second charging module in addition to the first charging module, receive the voltage switching instruction broadcast by the main charging module; The control unit is further configured to control itself to switch the first voltage operating range to which the current charging voltage value belongs to to the second voltage operating range after restarting if it is determined that the first charging module itself is not the main charging module and has not received the voltage switching instruction broadcast by the main charging module within a preset first time period.

7. An electronic device, characterized in that: The electronic device includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory for storing computer programs; A processor, configured to implement the method steps described in any one of claims 1 to 5 when executing a program stored in a memory.

8. 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 method steps described in any one of claims 1 to 5 are implemented.

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