Battery charging method, system, electronic device and storage medium

Abstract

The present application relates to a battery charging method, system, electronic device and storage medium. The battery charging method includes obtaining an insulation detection voltage. If the insulation detection voltage value is less than or equal to a preset insulation voltage value threshold, the charging pile is controlled to charge in a boost charging mode. If the insulation detection voltage value is greater than the preset insulation voltage value threshold, the charging pile is controlled to charge in a DC charging mode. That is, the insulation detection voltage when the charging pile performs self-inspection and insulation detection is obtained, and the insulation detection voltage is compared with the preset insulation voltage value threshold to determine whether boost charging is required.

Description

Technical Field

[0001] The present invention relates to the field of automobile energy technology, and in particular to a battery charging method, system, electronic equipment and storage medium. Background Art

[0002] In the development of new energy vehicles, problems such as slow charging and difficulty in charging have always restricted its development. In order to alleviate the anxiety of charging and mileage of new energy vehicles, it is urgent to shorten the single charging time. Therefore, the development of power battery systems with high voltage platforms is an important development direction for new energy vehicles.

[0003] At present, there are relatively few 800V charging piles that can charge high-voltage platform batteries. When the power battery voltage level is increased to 800V, the battery system needs to integrate a boost charging function, so it needs to be compatible with 500V charging piles on the market.

[0004] To be compatible with 500V charging piles, high-voltage platform batteries need to add a boost charging module and add boost judgment and control steps to the original DC charging process to achieve the battery's charging requirement voltage.

[0005] In summary, there is an urgent need for a battery charging method that can effectively determine whether the output capacity of the charging pile can match the charging demand of the power battery. Summary of the invention

[0006] One of the purposes of the present invention is to provide a battery charging method to effectively determine whether the output capacity of a charging pile can match the charging requirements of a power battery; a second purpose is to provide a battery charging system; a third purpose is to provide an electronic device; and a fourth purpose is to provide a storage medium.

[0007] To achieve the above objectives, in a first aspect, the present application provides a battery charging method, the battery charging method comprising:

[0008] Obtaining an insulation detection voltage, where the insulation detection voltage is the voltage output by the charging pile when detecting the insulation performance between the charging pile and the battery to be charged;

[0009] If the insulation detection voltage value is less than or equal to the preset insulation voltage value threshold, the charging pile is controlled to charge in the boost charging mode;

[0010] If the insulation detection voltage value is greater than the preset insulation voltage value threshold, the charging pile is controlled to charge in the DC charging mode.

[0011] In an exemplary embodiment of the present application, the insulation detection voltage is acquired during the charging handshake phase.

[0012] In an exemplary embodiment of the present application, controlling the charging pile to charge in a boost charging mode includes:

[0013] Obtain the maximum allowable charging voltage and voltage reduction of the battery to be charged;

[0014] If the maximum allowable charging voltage is less than the preset allowable charging voltage threshold, the voltage across the step-down capacitor and the output voltage of the charging pile are obtained after the preset first time period;

[0015] Determining a first capacitor voltage difference based on a voltage across the step-down capacitor;

[0016] If the voltage difference of the first capacitor is less than the preset voltage difference threshold of the first capacitor, the capacitor relay is controlled to be closed; if the output voltage is less than the preset output voltage threshold, the boost relay is controlled to be closed, and the charging pile is controlled to be powered on at high voltage;

[0017] Acquire the on / off status of the main positive relay and the main negative relay during the high voltage power-on process, wherein the on / off status includes closed;

[0018] If the on / off states of the main positive relay and the main negative relay are both closed, a voltage reduction request is sent;

[0019] Obtain the target voltage to be achieved by the voltage reduction request and the output voltage of the charging pile;

[0020] Diagnose the boost circuit, the buck circuit and the buck capacitor to determine the status of the boost circuit, the buck circuit and the buck capacitor, wherein the status includes normal and fault;

[0021] If the states are all normal and the output terminal voltage is greater than or equal to the target voltage, the output current of the charging pile is obtained;

[0022] If the output current is greater than the preset current threshold, the capacitor relay is disconnected to charge the rechargeable battery.

[0023] In an exemplary embodiment of the present application, determining the state of the boost circuit includes:

[0024] Get the voltage of any two sampling points on the boost circuit;

[0025] Determine a first voltage difference according to voltages of any two sampling points on the boost circuit;

[0026] The state of the boost loop is determined based on the first voltage difference and a preset first voltage difference threshold.

[0027] In an exemplary embodiment of the present application, determining the state of the boost circuit includes:

[0028] If the first voltage difference is less than a preset first voltage difference threshold, determining the state of the boost circuit as normal;

[0029] If the first voltage difference is greater than or equal to a preset first voltage difference threshold, the state of the boost circuit is determined to be a fault.

[0030] In an exemplary embodiment of the present application, determining the state of the step-down capacitor includes:

[0031] Obtain the voltage across the step-down capacitor at any sampling point on the capacitor step-down circuit and the transformer output current of the charging pile;

[0032] Determine a voltage difference of the second capacitor based on the voltage across the voltage-drop capacitor at any sampling point on the capacitor voltage-drop circuit;

[0033] The state of the step-down capacitor is determined based on the second capacitor voltage difference, the transformer output current, a preset second capacitor voltage difference threshold and a preset transformer output current threshold.

[0034] In an exemplary embodiment of the present application, determining the state of the step-down capacitor includes:

[0035] If the voltage difference of the second capacitor is greater than or equal to the preset second capacitor voltage difference threshold, or the transformer output current is less than the preset transformer output current threshold, the state of the step-down capacitor is determined to be normal;

[0036] If the voltage difference of the second capacitor is less than a preset second capacitor voltage difference threshold, and the transformer output current is greater than or equal to a preset transformer output current threshold, the state of the step-down capacitor is determined to be a fault.

[0037] In an exemplary embodiment of the present application, the battery charging method further includes:

[0038] Get the current charge level of the battery to be charged;

[0039] If the current charge amount is greater than or equal to the preset charge amount threshold, the requested current is adjusted to 0;

[0040] Get the current output current of the battery to be charged;

[0041] If the current output current is less than or equal to the preset current threshold, the charging pile is controlled to stop charging.

[0042] In a second aspect, the present application provides a battery charging system, the battery charging system comprising:

[0043] An acquisition module is used to obtain an insulation detection voltage, where the insulation detection voltage is the voltage output by the charging pile when detecting the insulation performance between the charging pile and the battery to be charged;

[0044] The first control module is used to control the charging pile to charge in a boost charging mode if the insulation detection voltage value is less than or equal to a preset insulation voltage value threshold;

[0045] The second control module is used to control the charging pile to charge in a DC charging mode if the insulation detection voltage value is greater than a preset insulation voltage value threshold.

[0046] In a third aspect, the present application provides an electronic device, the electronic device comprising:

[0047] one or more processors;

[0048] The storage device is used to store one or more programs, and when the one or more programs are executed by the one or more processors, the electronic device implements the battery charging method as described above.

[0049] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor of a computer, enables the computer to execute the battery charging method as described above.

[0050] Beneficial effects of the present invention:

[0051] The present application obtains the insulation detection voltage. If the insulation detection voltage value is less than or equal to the preset insulation voltage value threshold, the charging pile is controlled to charge in the boost charging mode. If the insulation detection voltage value is greater than the preset insulation voltage value threshold, the charging pile is controlled to charge in the DC charging mode. That is, the insulation detection voltage when the charging pile performs self-inspection and insulation detection is obtained, and the insulation detection voltage is compared with the preset insulation voltage value threshold to determine whether boost charging is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A flowchart of a battery charging method shown as an exemplary embodiment of the present application;

[0053] Figure 2 for Figure 1 A flowchart of controlling a charging pile to charge in a boost charging mode in an exemplary embodiment in the illustrated embodiment;

[0054] Figure 3 for Figure 2 A flow chart of determining the state of a boost circuit in an exemplary embodiment in the illustrated embodiment;

[0055] Figure 4 for Figure 3 Flowchart for determining the state of a boost circuit in an exemplary embodiment in the illustrated embodiment

[0056] Figure 5 for Figure 2 A flow chart of determining the state of a buck capacitor in an exemplary embodiment in the illustrated embodiment;

[0057] Figure 6 for Figure 5 A flow chart of determining the state of a buck capacitor in an exemplary embodiment in the illustrated embodiment;

[0058] Figure 7 A flowchart of a battery charging method shown as another exemplary embodiment of the present application;

[0059] Figure 8 A flowchart of a battery charging method shown in a specific embodiment of the present application;

[0060] Fig. 9 for Figure 8 A schematic diagram of the structure of the hardware device on which the illustrated embodiment relies;

[0061] Fig.10 for Figure 8 A flow chart of the parameter configuration phase in the illustrated embodiment;

[0062] Fig.11 A block diagram of a battery charging system is shown as an exemplary embodiment of the present application;

[0063] Fig.12 A schematic diagram of the structure of a computer system suitable for implementing an electronic device of an embodiment of the present application is shown. DETAILED DESCRIPTION

[0064] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0065] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0066] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0067] See also Figure 1 , Figure 1 The flowchart of a battery charging method is shown as an exemplary embodiment of the present application.

[0068] like Figure 1 As shown, in an exemplary embodiment of the present application, the battery charging method at least includes steps S110 to S130, which are described in detail as follows:

[0069] Step S110. Obtaining insulation detection voltage;

[0070] It should be noted that the insulation detection voltage is the voltage output by the charging pile when detecting the insulation performance between the charging pile and the battery to be charged. Specifically, the insulation detection voltage is obtained in the charging handshake stage. By obtaining the insulation detection voltage in the charging handshake stage, it is possible to determine whether to perform boost charging in the charging handshake stage, which reserves boost control time for the battery system and optimizes the boost charging process.

[0071] Step S120: If the insulation detection voltage value is less than or equal to the preset insulation voltage value threshold, the charging pile is controlled to charge in a boost charging mode;

[0072] Step S130: If the insulation detection voltage value is greater than the preset insulation voltage value threshold, the charging pile is controlled to charge in a DC charging mode.

[0073] See also Figure 2 , Figure 2 for Figure 1 The illustrated embodiment is a flow chart of controlling a charging pile to charge in a boost charging mode in an exemplary embodiment.

[0074] like Figure 2 As shown, in an exemplary embodiment of the present application, Figure 1 In the embodiment shown, the process of controlling the charging pile to charge in the boost charging mode includes steps S210 to S290, which are described in detail as follows:

[0075] Step S210. Obtain the maximum allowable charging voltage and voltage reduction of the battery to be charged;

[0076] Step S220. If the maximum allowable charging voltage is less than the preset allowable charging voltage threshold, the voltage across the step-down capacitor and the output voltage of the charging pile are obtained after the preset first time period;

[0077] Step S230. Determine the voltage difference of the first capacitor based on the voltage across the step-down capacitor;

[0078] Specifically, the difference between the voltages at both ends of the step-down capacitor is the first capacitor voltage difference;

[0079] Step S240. If the first capacitor voltage difference is less than the preset first capacitor voltage difference threshold, control the capacitor relay to close; if the output voltage is less than the preset output voltage threshold, control the boost relay to close, and control the charging pile to power on at high voltage;

[0080] Step S250. Obtaining the on / off status of the main positive relay and the main negative relay during the high voltage power-on process;

[0081] It should be noted that the opening and closing states include closed.

[0082] Step S260. If the opening and closing states of the main positive relay and the main negative relay are both closed, obtain the target voltage to be achieved by the voltage reduction request and the output voltage of the charging pile;

[0083] Step S270: diagnose the boost circuit, the buck circuit and the buck capacitor to determine the status of the boost circuit, the buck circuit and the buck capacitor;

[0084] It should be noted that the status includes normal and fault;

[0085] Specifically, the boost circuit, the buck circuit and the buck capacitor are diagnosed to determine whether there is an open circuit in the boost circuit, an open circuit in the buck circuit and a short circuit in the buck capacitor. If there is an open circuit in the boost circuit, the boost circuit is in a fault state. Similarly, if there is an open circuit in the buck circuit, the buck circuit is in a fault state. If there is a short circuit in the buck capacitor, the buck capacitor is in a fault state.

[0086] Step S280. If the status is normal and the output voltage of the charging pile is greater than or equal to the target voltage, the output current of the charging pile is obtained;

[0087] Step S280: If the output current is greater than the preset current threshold, disconnect the capacitor relay and charge the battery to be charged.

[0088] During the charging process, the requested current and requested voltage are updated in real time.

[0089] See also Figure 3 , Figure 3 for Figure 2 A flow chart of determining a state of a boost circuit in an exemplary embodiment is shown.

[0090] like Figure 3 As shown, in an exemplary embodiment of the present application, Figure 2 The process of determining the state of the boost circuit in the illustrated embodiment includes steps S310 to S330, which are described in detail as follows:

[0091] Step S310. Obtain the voltages of any two sampling points on the boost circuit;

[0092] Step S320. Determine a first voltage difference according to the voltages of any two sampling points on the boost circuit;

[0093] Specifically, the difference between the voltages of any two sampling points on the boost circuit is the first voltage difference;

[0094] Step S330: Determine the state of the boost loop based on the first voltage difference and a preset first voltage difference threshold.

[0095] See also Figure 4 , Figure 4 for Figure 3 The illustrated embodiment is a flow chart of determining a boost loop open state in an exemplary embodiment.

[0096] like Figure 4 As shown, in an exemplary embodiment of the present application, Figure 3 The process of determining the state of the boost circuit in the illustrated embodiment includes steps S410 to S420, which are described in detail as follows:

[0097] Step S410: If the first voltage difference is less than the preset first voltage difference threshold, the state of the boost circuit is determined to be normal;

[0098] Step S420: If the first voltage difference is greater than or equal to a preset first voltage difference threshold, the state of the boost circuit is determined to be a fault.

[0099] Similarly, determine the state of the step-down circuit:

[0100] Get the voltage of any two sampling points on the step-down circuit;

[0101] Determine a second voltage difference according to the voltages of any two sampling points on the step-down circuit;

[0102] Based on the second voltage differential and the preset second voltage differential threshold, the state of the step-down circuit is determined. Specifically, if the second voltage differential is less than the preset second voltage differential threshold, the state of the step-down circuit is determined to be normal; if the second voltage differential is greater than or equal to the preset second voltage differential threshold, the state of the step-down circuit is determined to be faulty.

[0103] See also Figure 5 , Figure 5 for Figure 2 The illustrated embodiment is a flow chart of determining the state of a buck capacitor in an exemplary embodiment.

[0104] like Figure 5 As shown, in an exemplary embodiment of the present application, Figure 2 The process of determining the state of the step-down capacitor in the illustrated embodiment includes steps S510 to S530, which are described in detail as follows:

[0105] Step S510. Obtain the voltage across the step-down capacitor at any sampling point on the capacitor step-down circuit and the transformer output current of the charging pile;

[0106] It should be noted that the transformed output current refers to the current output by the charging pile after the voltage is boosted, that is, the current input to one end of the battery to be charged.

[0107] Step S520. Determine the voltage difference of the second capacitor based on the voltage across the step-down capacitor at any sampling point on the capacitor step-down circuit;

[0108] Specifically, the difference between the voltages across the voltage-drop capacitor at any sampling point on the capacitor voltage-drop circuit is the second capacitor voltage difference;

[0109] Step S530: Determine the state of the step-down capacitor based on the second capacitor voltage difference, the transformer output current, a preset second capacitor voltage difference threshold, and a preset transformer output current threshold.

[0110] See also Figure 6 , Figure 6 for Figure 5 The illustrated embodiment is a flow chart of determining the state of a buck capacitor in an exemplary embodiment.

[0111] like Figure 6 As shown, in an exemplary embodiment of the present application, Figure 5 The process of determining the state of the step-down capacitor in the illustrated embodiment includes steps S610 to S620, which are described in detail as follows:

[0112] Step S610. If the voltage difference of the second capacitor is greater than or equal to the preset second capacitor voltage difference threshold, or the transformer output current is less than the preset transformer output current threshold, the state of the step-down capacitor is determined to be normal;

[0113] Step S620: If the voltage difference of the second capacitor is less than the preset second capacitor voltage difference threshold, and the transformer output current is greater than or equal to the preset transformer output current threshold, the state of the step-down capacitor is determined to be a fault.

[0114] See also Figure 7 , Figure 7 The present invention is a flowchart of a battery charging method according to another exemplary embodiment of the present invention.

[0115] like Figure 7 As shown, in another exemplary embodiment of the present application, the battery charging method further includes steps S740 to S770, which are described in detail as follows:

[0116] Step S740. Obtain the current charge capacity of the battery to be charged;

[0117] Step S750: If the current charge amount is greater than or equal to the preset charge amount threshold, the requested current is adjusted to 0;

[0118] Step S760. Obtain the current output current of the battery to be charged;

[0119] Step S770: If the current output current is less than or equal to the preset current threshold, the charging pile is controlled to stop charging.

[0120] See also Figure 8 , Figure 8 A flowchart of battery charging is shown in a specific embodiment.

[0121] like Figure 8 As shown, in a specific embodiment, the battery charging method steps are as follows:

[0122] like Fig. 9 As shown, the charging pile is physically connected to the battery to be charged, and low-voltage auxiliary power-on is performed. The boost charging system enters the charging handshake stage. In the charging handshake stage, the insulation detection voltage is obtained; the insulation detection voltage is the voltage U output by the charging pile when detecting the insulation performance between the charging pile and the battery to be charged. IDM ;

[0123] If the insulation detection voltage value is less than or equal to the preset insulation voltage value threshold, the charging pile is controlled to charge in the boost charging mode. Specifically, Fig.10 As shown, in the parameter configuration stage, the maximum allowable charging voltage of the battery to be charged is obtained;

[0124] If the maximum allowable charging voltage is less than the preset allowable charging voltage threshold, the voltage across the step-down capacitor and the output voltage of the charging pile are obtained after the preset first time period.

[0125] Determine the difference between the voltages at both ends of the step-down capacitor based on the voltages at both ends of the step-down capacitor to obtain a first capacitor voltage difference;

[0126] If the voltage difference of the first capacitor is less than the preset voltage difference threshold of the first capacitor (i.e., the capacitor discharge is completed), the capacitor relay is controlled to be closed; if the output voltage is less than the preset output voltage threshold (i.e., the output voltage discharge is completed), the boost relay is controlled to be closed, and the charging pile is controlled to be powered on at high voltage;

[0127] Get the on / off status of the main positive relay and the main negative relay during the high voltage power-on process, where the on / off status includes closed.

[0128] If the opening and closing states of the main positive relay and the main negative relay are both closed (i.e., high voltage power-on is completed), the target voltage to be achieved by the voltage reduction request and the output voltage of the charging pile are obtained;

[0129] Get the voltage of any two sampling points on the boost circuit;

[0130] Determine a first voltage difference according to voltages of any two sampling points on the boost circuit;

[0131] Based on the first voltage differential and the preset first voltage differential threshold, the state of the boost circuit is determined. Specifically, if the first voltage differential is less than the preset first voltage differential threshold, the state of the boost circuit is determined to be normal; if the first voltage differential is greater than or equal to the preset first voltage differential threshold, the state of the boost circuit is determined to be faulty.

[0132] Get the voltage of any two sampling points on the step-down circuit;

[0133] Determine a second voltage difference according to the voltages of any two sampling points on the step-down circuit;

[0134] Based on the second voltage differential and the preset second voltage differential threshold, determining the state of the step-down circuit, specifically, if the second voltage differential is less than the preset second voltage differential threshold, determining the state of the step-down circuit to be normal; if the second voltage differential is greater than or equal to the preset second voltage differential threshold, determining the state of the step-down circuit to be faulty;

[0135] Obtain the voltage across the step-down capacitor at any sampling point on the capacitor step-down circuit and the transformer output current of the charging pile; determine the voltage difference between the two based on the voltage across the step-down capacitor at any sampling point on the capacitor step-down circuit, obtain the second capacitor voltage difference, and determine the state of the step-down capacitor based on the second capacitor voltage difference, the transformer output current, the preset second capacitor voltage difference threshold, and the preset transformer output current threshold. Specifically, if the second capacitor voltage difference is greater than or equal to the preset second capacitor voltage difference threshold, or the transformer output current is less than the preset transformer output current threshold, the state of the step-down capacitor is determined to be normal; if the second capacitor voltage difference is less than the preset second capacitor voltage difference threshold, and the transformer output current is greater than or equal to the preset transformer output current threshold, the state of the step-down capacitor is determined to be faulty;

[0136] If the status is normal, and the output voltage of the charging pile is greater than or equal to the target voltage, if the above charging is ready, the system requests a voltage boost, enters the voltage boost process, and obtains the output current of the charging pile;

[0137] If the output current is greater than the preset current threshold, the capacitor relay is disconnected, the charging phase begins, and the rechargeable battery begins to be charged;

[0138] During the charging process, the requested current and requested voltage are updated in real time.

[0139] Get the current charge level of the battery to be charged;

[0140] If the current charge amount is greater than or equal to the preset charge amount threshold, the requested current is adjusted to 0;

[0141] Get the current output current of the battery to be charged;

[0142] If the current output current is less than or equal to the preset current threshold, the charging pile is controlled to stop charging;

[0143] If the insulation detection voltage value is greater than the preset insulation voltage value threshold, the charging pile is controlled to charge in the DC charging mode.

[0144] See also Fig.11 The embodiment of the present application further provides a battery charging system M1100, the battery charging system M1100 comprising:

[0145] Acquisition module M1110, used to obtain insulation detection voltage;

[0146] It should be noted that the insulation detection voltage is the voltage output by the charging pile when detecting the insulation performance between the charging pile and the battery to be charged;

[0147] The first control module M1120 is used to control the charging pile to charge in a boost charging mode if the insulation detection voltage value is less than or equal to a preset insulation voltage value threshold;

[0148] The second control module M1120 is used to control the charging pile to charge in a DC charging mode if the insulation detection voltage value is greater than a preset insulation voltage value threshold.

[0149] It should be noted that the battery charging system provided in the above embodiment and the battery charging method provided in the above embodiment belong to the same concept. The specific manner in which each module and unit performs the operation has been described in detail in the method embodiment and will not be repeated here. In practical applications, the battery charging system provided in the above embodiment can allocate the above functions to different functional modules as needed, that is, divide the internal structure of the system into different functional modules to complete all or part of the functions described above, and this is not limited here.

[0150] An embodiment of the present application also provides an electronic device, comprising: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the electronic device implements the battery charging method provided in the above-mentioned embodiments.

[0151] Fig.12 The structure diagram of the computer system suitable for implementing the electronic device of the embodiment of the present application is shown. It should be noted that: Fig.12The computer system 1200 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0152] like Figure 7 As shown, the computer system 1200 includes a central processing unit (CPU) 1201, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 1202 or the program loaded from the storage part 1208 to the random access memory (RAM) 1203, such as executing the method described in the above embodiment. In the RAM 1203, various programs and data required for system operation are also stored. The CPU 1201, the ROM 1202 and the RAM 1203 are connected to each other through the bus 1204. The input / output (I / O) interface 1205 is also connected to the bus 1204.

[0153] The following components are connected to the I / O interface 1205: an input section 1206 including a keyboard, a mouse, etc.; an output section 1207 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 1208 including a hard disk, etc.; and a communication section 1209 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 1209 performs communication processing via a network such as the Internet. A drive 1210 is also connected to the I / O interface 1205 as needed. A removable medium 1211, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 1210 as needed so that a computer program read therefrom is installed into the storage section 1208 as needed.

[0154] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 1209, and / or installed from a removable medium 1211. When the computer program is executed by a central processing unit (CPU) 1201, various functions defined in the system of the present application are executed.

[0155] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a computer-readable computer program is carried. This propagated data signal can take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. A computer program contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0156] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0157] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0158] On the other hand, the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor of a computer, the computer executes the battery charging method as described above. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0159] Another aspect of the present application also provides a computer program product or a computer program, the computer program product or the computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the battery charging method provided in each of the above embodiments.

[0160] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A battery charging method, characterized in that: The battery charging method comprises: Obtaining an insulation detection voltage, where the insulation detection voltage is the voltage output by the charging pile when detecting the insulation performance between the charging pile and the battery to be charged; If the insulation detection voltage value is less than or equal to the preset insulation voltage value threshold, the charging pile is controlled to charge in the boost charging mode; If the insulation detection voltage value is greater than the preset insulation voltage value threshold, the charging pile is controlled to charge in the DC charging mode; Control the charging pile to charge in boost charging mode, including: Obtain the maximum allowable charging voltage and voltage reduction of the battery to be charged; If the maximum allowable charging voltage is less than the preset allowable charging voltage threshold, the voltage across the step-down capacitor and the output voltage of the charging pile are obtained after the preset first time period; Determining a first capacitor voltage difference based on a voltage across the step-down capacitor; If the voltage difference of the first capacitor is less than the preset voltage difference threshold of the first capacitor, the capacitor relay is controlled to be closed; if the output voltage is less than the preset output voltage threshold, the boost relay is controlled to be closed, and the charging pile is controlled to be powered on at high voltage; Acquire the on / off status of the main positive relay and the main negative relay during the high voltage power-on process, wherein the on / off status includes closed; If the on / off states of the main positive relay and the main negative relay are both closed, a voltage reduction request is sent; Obtain the target voltage to be achieved by the voltage reduction request and the output voltage of the charging pile; Diagnose the boost circuit, the buck circuit and the buck capacitor to determine the status of the boost circuit, the buck circuit and the buck capacitor, wherein the status includes normal and fault; If the states are all normal and the output terminal voltage is greater than or equal to the target voltage, the output current of the charging pile is obtained; If the output current is greater than the preset current threshold, the capacitor relay is disconnected to charge the rechargeable battery.

2. The battery charging method according to claim 1, characterized in that: The insulation detection voltage is obtained during the charging handshake phase.

3. The battery charging method according to claim 1, characterized in that: Determine the status of the boost loop, including: Get the voltage of any two sampling points on the boost circuit; Determine a first voltage difference according to voltages of any two sampling points on the boost circuit; The state of the boost loop is determined based on the first voltage difference and a preset first voltage difference threshold.

4. The battery charging method according to claim 3, characterized in that: Determine the status of the boost loop, including: If the first voltage difference is less than a preset first voltage difference threshold, determining the state of the boost circuit as normal; If the first voltage difference is greater than or equal to a preset first voltage difference threshold, the state of the boost circuit is determined to be a fault.

5. The battery charging method according to claim 1, characterized in that: Determine the status of the buck capacitor, including: Obtain the voltage across the step-down capacitor at any sampling point on the capacitor step-down circuit and the transformer output current of the charging pile; Determine a voltage difference of the second capacitor based on the voltage across the voltage-drop capacitor at any sampling point on the capacitor voltage-drop circuit; The state of the step-down capacitor is determined based on the second capacitor voltage difference, the transformer output current, a preset second capacitor voltage difference threshold, and a preset transformer output current threshold.

6. The battery charging method according to claim 5, characterized in that: Determine the status of the buck capacitor, including: If the voltage difference of the second capacitor is greater than or equal to the preset second capacitor voltage difference threshold, or the transformer output current is less than the preset transformer output current threshold, the state of the step-down capacitor is determined to be normal; If the voltage difference of the second capacitor is less than a preset second capacitor voltage difference threshold, and the transformer output current is greater than or equal to a preset transformer output current threshold, the state of the step-down capacitor is determined to be a fault.

7. The battery charging method according to claim 1, characterized in that: The battery charging method further comprises: Get the current charge level of the battery to be charged; If the current charge amount is greater than or equal to the preset charge amount threshold, adjusting the requested current to 0; Get the current output current of the battery to be charged; If the current output current is less than or equal to the preset current threshold, the charging pile is controlled to stop charging.

8. A battery charging system, characterized in that: The battery charging system comprises: An acquisition module is used to obtain an insulation detection voltage, where the insulation detection voltage is the voltage output by the charging pile when detecting the insulation performance between the charging pile and the battery to be charged; The first control module is used to control the charging pile to charge in a boost charging mode if the insulation detection voltage value is less than or equal to the preset insulation voltage value threshold value, and control the charging pile to charge in a boost charging mode, including: obtaining the maximum allowable charging voltage and voltage reduction of the battery to be charged; if the maximum allowable charging voltage is less than the preset allowable charging voltage threshold value, obtaining the voltage across the step-down capacitor and the output voltage of the charging pile after a preset first time period; based on the voltage across the step-down capacitor, determining the first capacitor voltage difference; If the voltage difference of the first capacitor is less than the preset voltage difference threshold of the first capacitor, control the closing of the capacitor relay; if the output voltage is less than the preset output voltage threshold, control the closing of the boost relay, and control the charging pile to power on at high voltage; obtain the opening and closing states of the main positive relay and the main negative relay during the high-voltage power-on process, and the opening and closing states include closed; if the opening and closing states of the main positive relay and the main negative relay are both closed, send a voltage reduction request; obtain the target voltage to be achieved by the voltage reduction request and the output voltage of the charging pile; diagnose the boost circuit, the buck circuit and the buck capacitor, and determine the states of the boost circuit, the buck circuit and the buck capacitor, and the states include normal and faulty; if the states are all normal, and the output voltage is greater than or equal to the target voltage, obtain the output current of the charging pile; if the output current is greater than the preset current threshold, disconnect the capacitor relay, and charge the rechargeable battery; The second control module is used to control the charging pile to charge in a DC charging mode if the insulation detection voltage value is greater than a preset insulation voltage value threshold.

9. An electronic device, characterized in that: The electronic device comprises: one or more processors; A storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, enables the electronic device to implement the battery charging method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor of a computer, the computer is caused to execute the battery charging method according to any one of claims 1 to 7.

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