Boost charging method and device, electronic equipment and storage medium

Abstract

The invention provides a boost charging method and device, electronic equipment and a storage medium, and the method comprises the steps: determining a target time interval when a boost charging instruction is detected; based on the target time interval, a power module in a charging loop is controlled to charge a battery, and the switching time of one switching tube in the power module is staggered from the switching time of other switching tubes under the control of the target time interval. According to the invention, the EMC interference of the charging loop can be reduced while charging is realized.

Description

Technical Field

[0001] The present application relates to the field of electric drive motor control, and more specifically, to a boost charging method, device, electronic device and storage medium. Background Art

[0002] In order to solve the problems of difficulty and slow charging and charging compatibility of new energy electric vehicles, major manufacturers have successively released their own solutions. Among them, the most popular is the boost charging technology, which provides more charging solutions for electric vehicles on the "800V" high-voltage platform.

[0003] After adding the boost circuit, the EMC measures on the original circuit cannot fully cover the operating conditions. Under the boost and fast charging conditions, the radiation deteriorates seriously, which may cause charging interruption. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a boost charging method, device, electronic device and storage medium, so as to achieve charging while reducing the EMC interference of the charging circuit.

[0005] In a first aspect, the present invention provides a boost charging method, the method comprising:

[0006] When a boost charging command is detected, a target time interval is determined;

[0007] The power module in the charging circuit is controlled to charge the battery based on the target time interval, wherein the switching time of one switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval.

[0008] The method of the present application can determine a target time interval when a boost charging instruction is detected, and then can control the power module in the charging circuit to charge the battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval. In this way, during the battery charging process, the time interval can be used to stagger the peak emission of the switch tubes in the power module, thereby avoiding the superposition of EMC interference caused by the simultaneous emission of the switch tubes, thereby reducing the EMC interference of the charging circuit.

[0009] In an optional implementation, determining the target time interval includes:

[0010] Acquiring circuit characteristic data of the charging circuit;

[0011] The target time interval is obtained based on circuit characteristic data of the charging circuit.

[0012] This optional implementation method obtains the circuit characteristic data of the charging circuit, and then can obtain the target time interval based on the circuit characteristic data of the charging circuit. In this way, while using the target time interval to reduce EMC interference, it can also avoid a significant increase in unidirectional current flowing in a short period of time that exceeds the charging circuit's tolerance capacity, wherein the significant increase in unidirectional current flowing in a short period of time is caused by staggered switching times.

[0013] In an optional implementation, the target time interval is between 0.51us and 1.5us.

[0014] This optional implementation sets the target time interval between 0.51us and 1.5us, which can reduce EMC while avoiding excessive unidirectional current flowing continuously in a short period of time.

[0015] In an optional implementation, the target time interval is 1 us.

[0016] This optional implementation sets the target time interval to 1 us, which can reduce EMC while avoiding excessive unidirectional current flowing continuously in a short period of time.

[0017] In an optional implementation, determining the target time interval includes:

[0018] Obtaining the hardware life of the charging circuit;

[0019] The target time interval is obtained based on the hardware life of the charging circuit.

[0020] This optional implementation manner can obtain the target time interval based on the hardware life of the charging circuit by acquiring the hardware life of the charging circuit. In this way, the target time interval can be set based on the hardware life of the charging circuit to avoid a reduction in the charging circuit life due to unreasonable setting of the target time interval.

[0021] In an optional implementation, the switching time of the switch tube is the switching time of a transistor.

[0022] In an optional implementation, the power module includes three transistors, wherein the switching times of the three transistors are staggered.

[0023] This optional implementation can stagger the switching times of the three transistors.

[0024] In a second aspect, the present invention provides a boost charging device, comprising:

[0025] A determination module, configured to determine a target time interval when a boost charging instruction is detected;

[0026] A charging control module is used to control a power module in a charging circuit to charge a battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval.

[0027] The device of the present application can determine the target time interval when a boost charging instruction is detected by executing the boost charging method, and then can control the power module in the charging circuit to charge the battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval. In this way, during the battery charging process, the time interval can be used to make the switch tubes in the power module emit waves at staggered peaks, thereby avoiding the superposition of EMC interference caused by the simultaneous emission of the switch tubes, thereby reducing the EMC interference of the charging circuit.

[0028] In a third aspect, the present invention provides an electronic device, comprising:

[0029] Processor; and

[0030] A memory is configured to store machine-readable instructions, which, when executed by the processor, execute the boost charging method as described in any of the aforementioned embodiments.

[0031] The electronic device of the present application can determine the target time interval when a boost charging instruction is detected by executing the boost charging method, and then can control the power module in the charging circuit to charge the battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval. In this way, during the battery charging process, the time interval can be used to stagger the peak emission of the switch tubes in the power module, thereby avoiding the superposition of EMC interference caused by the simultaneous emission of the switch tubes, thereby reducing the EMC interference of the charging circuit.

[0032] In a fourth aspect, the present invention provides a storage medium storing a computer program, wherein the computer program is executed by a processor to perform the boost charging method as described in any one of the aforementioned embodiments.

[0033] The storage medium of the present application can determine the target time interval when a boost charging instruction is detected by executing the boost charging method, and then can control the power module in the charging circuit to charge the battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval. In this way, during the battery charging process, the time interval can be used to stagger the peak emission of the switch tubes in the power module, thereby avoiding the superposition of EMC interference caused by the simultaneous emission of the switch tubes, thereby reducing the EMC interference of the charging circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application 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.

[0035] Figure 1 It is a schematic flow chart of a boost charging method disclosed in an embodiment of the present application;

[0036] Figure 2 is a schematic diagram of a charging circuit disclosed in an embodiment of the present application;

[0037] Figure 3 It is a structural schematic diagram of a boost charging device disclosed in an embodiment of the present application;

[0038] Figure 4 It is a structural schematic diagram of an electronic device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0040] Embodiment 1

[0041] See also Figure 1 , Figure 1 is a flow chart of a boost charging method disclosed in an embodiment of the present application, such as Figure 1 As shown, the method of the embodiment of the present application includes the following steps:

[0042] 101. When a boost charging instruction is detected, determining a target time interval;

[0043] 102. Control a power module in a charging circuit to charge a battery based on a target time interval, wherein a switching time of a switch tube in the power module is staggered with a switching time of other switch tubes under the control of the target time interval.

[0044] The method of the embodiment of the present application can determine the target time interval when the boost charging instruction is detected, and then can control the power module in the charging circuit to charge the battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval, so that in the process of charging the battery, the time interval can be used to make the switch tube in the power module stagger the peak wave, thereby avoiding the EMC interference superposition caused by the simultaneous wave of the switch tube, thereby reducing the EMC interference of the charging circuit. Furthermore, by reducing the EMC interference of the charging circuit, the impact on the daisy chain communication of the battery pack can be effectively reduced.

[0045] In an embodiment of the present application, a boost charging instruction can be issued by a vehicle-side control terminal, wherein a boost charging instruction can be generated when the vehicle detects that the vehicle's charging gun is connected to an external charging pile and the charging voltage of the charging pile is less than the charging voltage required by the vehicle.

[0046] In the embodiment of the present application, the target time interval is used to control the peak-shifting of the switches in the power module, that is, the switching time of one switch in the power module is staggered with the switching time of other switches under the control of the target time interval.

[0047] In the embodiment of the present application, the switch tube in the power module will cause interference voltage at the switching moment. If two or more switch tubes perform switching actions at the same time, the interference voltage caused by each switch tube will be superimposed at the same time. The embodiment of the present application can avoid the interference voltage caused by the switch tube from being superimposed at the same time by staggered peak transmission of the switch tube, thereby reducing the EMC interference of the charging circuit.

[0048] In the embodiment of the present application, as an optional implementation, the step of determining the target time interval includes the following sub-steps:

[0049] Obtaining circuit characteristic data of the charging circuit;

[0050] The target time interval is obtained based on circuit characteristic data of the charging circuit.

[0051] This optional implementation method obtains the circuit characteristic data of the charging circuit, and then can obtain the target time interval based on the circuit characteristic data of the charging circuit. In this way, while using the target time interval to reduce EMC interference, it avoids a significant increase in unidirectional current flowing in a short period of time that exceeds the charging circuit's tolerance capacity, wherein the significant increase in unidirectional current flowing in a short period of time is caused by staggered switching times.

[0052] In this optional implementation, the circuit characteristic data of the charging circuit refers to various electrical parameters and performance indicators related to the charging circuit. Further, the circuit characteristic data of the charging circuit may include parameters such as voltage, current, resistance, temperature characteristics, and time constant of the charging circuit. In the embodiment of the present application, as an optional implementation, the target time interval is between 0.51us and 1.5us.

[0053] This optional implementation sets the target time interval between 0.51us and 1.5us, which can reduce EMC while preventing the current from flowing too large in one direction for a short period of time. The longer the current flows in one direction for a short period of time, the greater the impact on the charging circuit.

[0054] In an optional implementation, the target time interval is 1 us.

[0055] This optional implementation sets the target time interval to 1us, which can reduce EMC while preventing a single-direction current from being too large for a short period of time. It should be noted that 1us is a preferred implementation in the range of 0.51us to 1.5us.

[0056] In the embodiment of the present application, as an optional implementation, the step of determining the target time interval includes the following steps:

[0057] Get the hardware life of the charging circuit;

[0058] The target time interval is obtained based on the hardware life of the charging circuit.

[0059] This optional implementation manner can obtain the target time interval based on the hardware life of the charging circuit by acquiring the hardware life of the charging circuit. In this way, the target time interval can be set based on the hardware life of the charging circuit to avoid a reduction in the charging circuit life due to unreasonable setting of the target time interval.

[0060] In the embodiment of the present application, as an optional implementation, the switching time of the switch tube is the switching time of the transistor.

[0061] In an embodiment of the present application, as an optional implementation, the power module includes three transistors, wherein the switching times of the three transistors are staggered.

[0062] This optional implementation can stagger the switching times of the three transistors.

[0063] For the embodiments of this application, as an example, please refer to Figure 2 , Figure 2 is a schematic diagram of a charging circuit disclosed in an embodiment of the present application, such as Figure 2 As shown, the charging current enters from the W phase of the motor, and flows out from the U and V phases in sequence, thereby charging the LC circuit composed of the right inductor C1 and the resistor R1, thereby using the LC circuit to achieve voltage boost, wherein the LC circuit is connected to the battery.

[0064] Furthermore, the charging current flowing out from the U and V phases needs to pass through two transistors of the power module, and the switching time interval of the transistors is 1us.

[0065] Embodiment 2

[0066] See also Figure 3 , Figure 3 is a schematic diagram of the structure of a boost charging device disclosed in an embodiment of the present application, such as Figure 3 As shown, the device of the embodiment of the present application includes the following functional modules:

[0067] A determination module 201, configured to determine a target time interval when a boost charging instruction is detected;

[0068] The charging control module 202 is used to control the power module in the charging circuit to charge the battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval.

[0069] The device of the embodiment of the present application can determine the target time interval when a boost charging instruction is detected by executing the boost charging method, and then can control the power module in the charging circuit to charge the battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval. In this way, during the battery charging process, the time interval can be used to make the switch tube in the power module emit waves at different peaks, thereby avoiding the superposition of EMC interference caused by the simultaneous emission of the switch tube, thereby reducing the EMC interference of the charging circuit.

[0070] Embodiment 3

[0071] See also Figure 4 , Figure 4 is a schematic diagram of the structure of an electronic device disclosed in an embodiment of the present application, such as Figure 4 As shown, the electronic device of the embodiment of the present application includes:

[0072] Processor 301; and

[0073] The memory 302 is configured to store machine-readable instructions, and when the instructions are executed by the processor 301, the boost charging method as described in any of the aforementioned embodiments is executed.

[0074] The electronic device of the embodiment of the present application can determine the target time interval when a boost charging instruction is detected by executing the boost charging method, and then can control the power module in the charging circuit to charge the battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval. In this way, during the battery charging process, the time interval can be used to make the switch tube in the power module emit waves at different peaks, thereby avoiding the superposition of EMC interference caused by the simultaneous emission of the switch tube, thereby reducing the EMC interference of the charging circuit.

[0075] In a fourth aspect, the present invention provides a storage medium storing a computer program, wherein the computer program is executed by a processor to implement a boost charging method according to any one of the aforementioned embodiments.

[0076] The storage medium of the present application can determine the target time interval when a boost charging instruction is detected by executing the boost charging method, and then can control the power module in the charging circuit to charge the battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval. In this way, during the battery charging process, the time interval can be used to stagger the peak transmission of the switch tube in the power module, thereby avoiding the superposition of EMC interference caused by the simultaneous transmission of the switch tube, thereby reducing the EMC interference of the charging circuit.

[0077] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units 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 units can be electrical, mechanical or other forms.

[0078] In addition, 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.

[0079] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0080] It should be noted that if the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes 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 various embodiments 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 disk or an optical disk.

[0081] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0082] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A boost charging method, characterized in that: The method comprises: When a boost charging command is detected, a target time interval is determined; The power module in the charging circuit is controlled to charge the battery based on the target time interval, wherein the switching time of one switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval.

2. The method according to claim 1, characterized in that Determining the target time interval includes: Acquiring circuit characteristic data of the charging circuit; The target time interval is obtained based on circuit characteristic data of the charging circuit.

3. The method according to claim 1, characterized in that The target time interval is between 0.51us and 1.5us.

4. The method according to claim 2, characterized in that The target time interval is 1 us.

5. The method according to claim 1, characterized in that Determining the target time interval includes: Obtaining the hardware life of the charging circuit; The target time interval is obtained based on the hardware life of the charging circuit.

6. The method according to claim 1, characterized in that The switching time of the switch tube is the switching time of the triode.

7. The method according to claim 6, characterized in that The power module includes three transistors, wherein the switching times of the three transistors are staggered.

8. A boost charging device, characterized in that: Said include: A determination module, configured to determine a target time interval when a boost charging instruction is detected; A charging control module is used to control a power module in a charging circuit to charge a battery based on the target time interval, wherein the switching time of a switch tube in the power module is staggered with the switching time of other switch tubes under the control of the target time interval.

9. An electronic device, characterized in that: include: processor; as well as A memory configured to store machine-readable instructions, which, when executed by the processor, execute the boost charging method as described in any one of claims 1-7.

10. A storage medium, characterized in that: The storage medium stores a computer program, and the computer program is executed by a processor to implement the boost charging method according to any one of claims 1 to 7.

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