Battery voltage circuit and control method thereof

Abstract

The embodiment of the present application discloses a battery voltage circuit and a control method thereof, which belongs to the field of power electronics. The battery voltage circuit includes a first transformer module, which is used to increase the input first voltage signal according to a preset ratio to obtain a second voltage signal; a rectifier module, which is connected to the first transformer module, is used to rectify the second voltage signal to obtain a third voltage signal; and a second transformer module, which is connected to the rectifier module, is used to controllably transform the third voltage signal to obtain a target voltage signal of the battery. The embodiment of the present application has the technical effect that the second transformer module can controllably transform the third voltage signal, so that the target voltage signal can match the charging voltage required by the battery, making the battery less likely to be damaged due to excessive, too low or unstable charging voltage.

Description

Technical Field

[0001] The present application relates to the field of power electronics, and in particular to a battery voltage circuit and a control method thereof. Background Art

[0002] In traditional inverters, the battery voltage is a bus voltage obtained after step-up rectification. However, the bus voltage obtained in this way is not controllable, which makes the battery easily damaged. Summary of the Invention

[0003] The embodiments of the present application provide a battery voltage circuit and a control method thereof, so as to at least solve the technical problem that the battery is easily damaged.

[0004] According to a first aspect of an embodiment of the present application, a battery voltage circuit is provided, comprising:

[0005] a first voltage transformation module, configured to increase the input first voltage signal according to a preset ratio to obtain a second voltage signal;

[0006] a rectifier module, connected to the first transformer module, and configured to rectify the second voltage signal to obtain a third voltage signal;

[0007] The second voltage transformation module is connected to the rectifier module and is used to perform controllable voltage transformation on the third voltage signal to obtain a target voltage signal of the battery.

[0008] With this embodiment, the second voltage transformation module can controllably transform the third voltage signal so that the target voltage signal can match the charging voltage required by the battery, making it less likely that the battery will be damaged due to excessive, low or unstable charging voltage.

[0009] In combination with the first aspect, in an optional implementation of the embodiment of the present application, two second transformation modules are provided in parallel, and the two second transformation modules are alternately turned on.

[0010] By adopting this implementation, the two second transformer modules arranged in parallel are alternately turned on, which helps to reduce current ripple, share power, and improve the reliability of the voltage circuit.

[0011] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the second voltage transformation module includes a switch tube that can be controlled to be on and off, and the switch tube is connected in parallel to the positive and negative electrodes of the output end of the voltage circuit.

[0012] By adopting this implementation, the third voltage signal is boosted by turning the switch on and off, so that the boost amplitude is controllable, thereby improving the boost flexibility and controllability of the battery voltage.

[0013] In combination with the first aspect, in an optional implementation of the embodiment of the present application, a first MOS tube is connected in series with the negative electrode of the output end of the voltage circuit, and the first MOS tube is used to be in a disconnected state when the switch tube is turned on, and the body diode of the first MOS tube serves as a freewheeling diode.

[0014] With this implementation, the first MOS transistor can be used to control the on / off of the negative electrode of the output end of the voltage circuit. At the same time, the body diode of the first MOS transistor is used as a freewheeling diode, thereby protecting the components in the voltage circuit and reducing the number of components in the voltage circuit, thereby reducing the cost of the voltage circuit.

[0015] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the switch tube includes a second MOS tube, the drain of the second MOS tube is connected to the positive electrode of the output end of the voltage circuit, and the source of the second MOS tube is connected to the negative electrode of the output end of the voltage circuit;

[0016] A resistor and an electric control switch are connected in series between the gate and the source of the second MOS tube.

[0017] With this implementation, when the electronically controlled switch is closed, the circuit between the gate and source of the second MOS transistor is conductive, and current flows through the resistor. Utilizing the fixed voltage drop between the gate and source of the second MOS transistor and the resistor with a fixed resistance, the voltage circuit can output a current of a fixed value, thereby improving the controllability of the current in the voltage circuit.

[0018] According to a second aspect of an embodiment of the present application, a method for controlling a battery voltage circuit is provided, the method comprising:

[0019] Acquiring a first voltage signal and battery charging requirement information;

[0020] determining a target voltage of the battery based on charging demand information;

[0021] The boost ratio of the second voltage conversion module is adjusted according to the first voltage signal and the target voltage, so that the voltage circuit outputs the target voltage.

[0022] In this embodiment, the first voltage signal and charging requirement information are used to determine the boost ratio of the second transformer module, so that after the second transformer module boosts the voltage, the voltage circuit outputs the target voltage, so that the target voltage can match the charging voltage required by the battery, making it less likely that the battery will be damaged due to excessive, too low or unstable charging voltage.

[0023] In conjunction with the second aspect, in an optional implementation of the embodiment of the present application, adjusting the boost ratio of the second voltage conversion module according to the first voltage signal and the target voltage so that the voltage circuit outputs the target voltage includes:

[0024] predicting a voltage variation curve in a second voltage signal according to the first voltage signal;

[0025] The voltage boost ratio of the second voltage conversion module is adjusted according to the difference between the voltage value in the change curve and the target voltage.

[0026] With this implementation, because the first voltage conversion module increases the voltage according to a preset ratio, the voltage of the second voltage signal can be predicted using the first voltage signal, thereby generating a voltage variation curve for the second voltage signal. The voltage boost ratio is then adjusted based on the difference between the voltage values ​​in the variation curve and the target voltage. Because the variation curve is predicted, the required voltage boost ratio can be calculated in advance, improving the stability of the target voltage.

[0027] In conjunction with the second aspect, in an optional implementation of the embodiment of the present application, adjusting the boost ratio of the second transformer module includes:

[0028] Adjust the duty cycle of the pulse width modulation signal of the switch tube in the second transformation module.

[0029] By adopting this implementation method, the boost ratio is changed by adjusting the duty cycle, which is beneficial to improving the control accuracy of the boost ratio.

[0030] In conjunction with the second aspect, in an optional implementation of the embodiment of the present application, the charging requirement information includes a charging requirement voltage;

[0031] Determining the target voltage of the battery according to the charging requirement information includes:

[0032] The target voltage is determined according to a difference between a preset voltage and the charging requirement voltage.

[0033] With this implementation, the target voltage is calculated by using the preset voltage and the charging demand voltage, which is simple to calculate and easy to save computing resources.

[0034] In conjunction with the second aspect, in an optional implementation of the embodiment of the present application, obtaining battery charging requirement information includes:

[0035] determining a charging voltage attenuation amplitude according to the remaining life of the battery;

[0036] The charging demand information is calculated based on the preset voltage and the charging voltage attenuation amplitude.

[0037] With this implementation, the charging voltage attenuation amplitude is obtained through the remaining life of the battery, and then the charging voltage attenuation amplitude is used to calculate the charging demand information, so that the target voltage determined by the charging demand information is adapted to the actual usage of the battery, thereby improving the adaptability of the target voltage to the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a structural block diagram of a battery voltage circuit provided by an embodiment of the present application;

[0039] Figure 2 This is a structural block diagram of a battery voltage circuit provided by another embodiment of the present application;

[0040] Figure 3 is a circuit diagram of a battery voltage circuit provided in an embodiment of the present application;

[0041] Figure 4 is a circuit diagram of a battery voltage circuit provided in another embodiment of the present application;

[0042] Figure 5 This is a flow chart of a method for controlling a battery voltage circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0044] It should be understood that the "plurality" mentioned herein refers to two or more. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily mean different.

[0045] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0046] In traditional inverters, the battery voltage is directly converted to a bus voltage after push-pull boosting and synchronous rectification. No first-stage boost circuit is added between the synchronous machine and the bus capacitor. In this case, the bus voltage obtained is uncontrollable, which makes the battery easily damaged.

[0047] Based on this, the embodiment of the present application provides a battery voltage circuit, referring to Figure 1 The flow chart of the battery voltage circuit shown in FIG. 1 includes the following contents.

[0048] a first voltage transformation module, configured to increase the input first voltage signal according to a preset ratio to obtain a second voltage signal;

[0049] a rectifier module, connected to the first transformer module, and configured to rectify the second voltage signal to obtain a third voltage signal;

[0050] The second voltage transformation module is connected to the rectifier module and is used to perform controllable voltage transformation on the third voltage signal to obtain a target voltage signal of the battery.

[0051] In one embodiment, the first voltage conversion module is a transformer, and the specific value of the preset ratio is related to the transformer's turns ratio. That is, once the transformer's primary and secondary windings are determined, the preset ratio is determined. In this embodiment, the preset ratio of the first voltage conversion module is not specifically limited and can be set based on actual needs.

[0052] In one embodiment, the rectifier module is configured to rectify the second voltage signal. Specifically, the rectifier module is configured to rectify the second voltage signal of alternating current into a third voltage signal of direct current. It should be noted that any circuit capable of rectifying the second voltage signal may serve as the rectifier module in this embodiment. Therefore, this embodiment does not limit the specific circuit structure of the rectifier module.

[0053] In one embodiment, when the second voltage transformation module transforms the third voltage signal, the amplitude of the transformation is controllable. For ease of understanding, for example, in one specific application, by providing a switch in the second voltage transformation module, the duty cycle of the pulse width modulation signal is changed, thereby varying the on-off frequency of the switch, thereby achieving controllable voltage transformation.

[0054] The voltage of the target voltage signal is a preset value, that is, the voltage of the third voltage signal is made to be the preset value by adjusting the transformation amplitude or transformation ratio of the second transformation module.

[0055] With this embodiment, the second voltage transformation module can controllably transform the third voltage signal so that the target voltage signal can match the charging voltage required by the battery, making it less likely that the battery will be damaged due to excessive, low or unstable charging voltage.

[0056] In a possible embodiment of the present application, Figure 2 As shown, two second transformation modules are provided in parallel, and the two second transformation modules are turned on alternately.

[0057] In one embodiment, the input ends of the two second transformer modules are connected to the output end of the rectifier module, and the output ends of the two second transformer modules are connected to the input end of the battery, so that the two second transformer modules are arranged in parallel between the output end of the rectifier module and the input end of the battery.

[0058] It should be noted that the two second transformer modules have the same structure and function, forming a multi-phase interleaved parallel boost circuit. The phase difference between the two second transformer modules is 180°, and they share an output capacitor.

[0059] With this embodiment, the two second transformer modules connected in parallel are alternately turned on, which helps to reduce current ripple, share power, and improve the reliability of the voltage circuit.

[0060] Optionally, in an implementation of this embodiment, the second voltage transformation module includes a switch tube that can be controlled to be on and off, and the switch tube is connected in parallel to the positive and negative electrodes of the output end of the voltage circuit.

[0061] In one embodiment, the switch tube includes an electrically controllable switch, such as a triode, a MOS tube, etc., which is not specifically limited in this embodiment. The switch tube is connected in parallel to the positive and negative electrodes of the voltage circuit output terminal, that is, in parallel to the positive and negative electrodes of the battery input terminal.

[0062] It should be noted that in one specific application scenario, the battery voltage circuit originally includes a diode connected in parallel with the positive and negative electrodes of the voltage circuit output terminal, wherein the cathode of the diode is connected to the positive electrode of the voltage circuit output terminal, and the anode of the diode is connected to the negative electrode of the voltage circuit output terminal. In this embodiment, the diode is replaced with a switching transistor to form a boost circuit in the battery voltage circuit.

[0063] By adopting this implementation, the third voltage signal is boosted by turning the switch on and off, so that the boost amplitude is controllable, thereby improving the boost flexibility and controllability of the battery voltage.

[0064] Optionally, in an implementation of this embodiment, a first MOS tube is connected in series to the negative electrode of the output end of the voltage circuit, and the first MOS tube is configured to be in an off state when the switch tube is turned on, and a body diode of the first MOS tube serves as a freewheeling diode.

[0065] In one embodiment, the source of the first MOS transistor is connected to the negative electrode of the voltage circuit output terminal, and the drain of the first MOS transistor is connected to the low-level terminal of the switch transistor. The first MOS transistor has a body diode, the anode of the body diode is connected to the source of the first MOS transistor, and the cathode of the body diode is connected to the drain of the first MOS transistor.

[0066] With this implementation, the first MOS transistor can be used to control the on / off of the negative electrode of the output end of the voltage circuit. At the same time, the body diode of the first MOS transistor is used as a freewheeling diode, thereby protecting the components in the voltage circuit and reducing the number of components in the voltage circuit, thereby reducing the cost of the voltage circuit.

[0067] Optionally, in an implementation of this embodiment, the switch tube includes a second MOS tube, the drain of the second MOS tube is connected to the positive electrode of the output end of the voltage circuit, and the source of the second MOS tube is connected to the negative electrode of the output end of the voltage circuit;

[0068] A resistor and an electric control switch are connected in series between the gate and the source of the second MOS tube.

[0069] In one embodiment, the resistance of the resistor is fixed, and the electronically controlled switch can be a single-pole single-throw electronically controlled switch. In another embodiment, the resistor is a sliding rheostat, and the resistance of the resistor is changed according to the current value required by the battery to achieve constant current charging of the battery.

[0070] With this implementation, when the electronically controlled switch is turned on, the circuit between the gate and source of the second MOS transistor is turned on, and current flows through the resistor. Utilizing the fixed voltage drop between the gate and source of the second MOS transistor and the resistor with a fixed resistance, the voltage circuit can output a current of a fixed value, thereby improving the controllability of the current in the voltage circuit.

[0071] In a specific implementation of an embodiment of the present application, the battery voltage circuit is described as a battery charging circuit as an example.

[0072] like Figure 3 As shown, it includes MOS transistors Q1, Q2, Q3, Q4, Q5, Q6, Q7 (the second MOS transistor), Q8 (the first MOS transistor), a transformer, an inductor L1, a capacitor C1, and a capacitor C2. The first voltage transformation module includes the transformer, the rectifier module includes MOS transistors Q3, Q4, Q5, Q6, and C1, and the second voltage transformation module includes inductor L1, Q7, Q8, and C2.

[0073] It should be noted that in order to use the MOS tube and transformer, an external power supply will be connected. Figure 3 As shown, the sources of the MOS transistors Q1 and Q2 are both connected to the BAT- pin of the external power supply, the gate of the MOS transistor Q1 is connected to the S2 pin of the external power supply, and the gate of the MOS transistor Q2 is connected to the S1 pin of the external power supply. The primary winding of the transformer is respectively connected to the BAT+ pin of the external power supply, the drain of the MOS transistor Q1, and the drain of the MOS transistor Q2, so as to form a current loop on one side of the primary winding of the transformer.

[0074] The source of MOS transistor Q3 and the drain of MOS transistor Q5 are both connected to the high-level pin of the secondary winding of the transformer. The source of MOS transistor Q4 and the drain of MOS transistor Q6 are both connected to the low-level pin of the secondary winding of the transformer. The drain of MOS transistor Q3 and the drain of MOS transistor Q4 are both connected to the positive electrode of inductor L1. The source of MOS transistor Q5 and the source of MOS transistor Q6 are both connected to the drain of MOS transistor Q8. The positive electrode of capacitor C1 is connected to the positive electrode of inductor L1, and the negative electrode of capacitor C1 is connected to the drain of MOS transistor Q8. The gates of MOS transistor Q3 and MOS transistor Q6 are both connected to the S1 pin of the external power supply. The gates of MOS transistor Q4 and MOS transistor Q5 are both connected to the S2 pin of the external power supply.

[0075] The negative electrode of inductor L1 is connected to the positive electrode of the voltage circuit output terminal, the drain of MOS transistor Q7 is connected to the positive electrode of the voltage circuit output terminal, and the source of MOS transistor Q7 is connected to the drain of MOS transistor Q8. The positive electrode of capacitor C2 is connected to the positive electrode of the voltage circuit output terminal, and the negative electrode of capacitor C2 is connected to the negative electrode of the voltage circuit output terminal. The source of MOS transistor Q8 is connected to the negative electrode of the voltage circuit output terminal. The gate of MOS transistor Q7 is connected to the S3 pin of the external power supply, and the gate of MOS transistor Q8 is connected to the S4 pin of the external power supply.

[0076] Among them, all pins of the external power supply are used to transmit electrical signals to control the conduction and disconnection of the MOS tube. Specifically, different pins transmit different electrical signals, which may be different current sizes or different voltage sizes. This embodiment does not make specific limitations on this.

[0077] In one embodiment, the two second transformation modules have identical structures and are connected in parallel between the capacitor C1 and the output terminal of the voltage circuit, so the specific structures are not described in detail.

[0078] like Figure 4As shown, in one embodiment, to control the current value at the output of the voltage circuit, a current control branch is provided in the second voltage conversion module. Specifically, the current control branch includes a resistor R1 and an electronically controlled switch. The fixed voltage drop between the gate and source of the second MOS transistor and the fixed resistance of resistor R1 are used to constrain the current value output to the battery, thereby ensuring a controllable and constant current value is delivered to the battery. Because the second MOS transistor can change the voltage value output by the voltage circuit, in conjunction with the current control branch, the second voltage conversion module can simultaneously control both current and voltage.

[0079] The present application also provides a control method for the battery voltage circuit. Figure 5 As shown, the method includes:

[0080] S100: Acquire a first voltage signal and battery charging requirement information.

[0081] In one embodiment, the first voltage signal is an input electrical signal of the first transformer module, and its voltage value is a first voltage. The charging demand information includes information used to represent the battery charging requirements, which may specifically be a voltage requirement or a current requirement. This embodiment does not limit the specific requirement type of the charging demand information.

[0082] S102: Determine a target voltage of the battery according to charging demand information.

[0083] The target voltage is the voltage actually output to the battery after being regulated by the battery voltage circuit.

[0084] In one embodiment, when the charging demand represented by the charging demand information is different, the determined target voltage is also different. Specifically, the target voltage can be determined by a preset relationship, which is not specifically limited in this embodiment.

[0085] S104: Adjust the boost ratio of the second voltage conversion module according to the first voltage signal and the target voltage, so that the voltage circuit outputs the target voltage.

[0086] In one embodiment, after the target voltage is determined, the difference between the target voltage and the first voltage signal can be calculated, and the boost ratio can be determined based on the difference. Then, after the voltage is boosted by the second transformer module, a target voltage signal having a voltage value equal to the target voltage is obtained.

[0087] In this embodiment, the first voltage signal and charging requirement information are used to determine the boost ratio of the second transformer module, so that after the second transformer module boosts the voltage, the voltage circuit outputs the target voltage, so that the target voltage can match the charging voltage required by the battery, making it less likely that the battery will be damaged due to excessive, too low or unstable charging voltage.

[0088] Optionally, in an implementation of this embodiment, adjusting the boost ratio of the second voltage conversion module according to the first voltage signal and the target voltage so that the voltage circuit outputs the target voltage includes:

[0089] predicting a voltage variation curve in a second voltage signal according to the first voltage signal;

[0090] The voltage boost ratio of the second voltage conversion module is adjusted according to the difference between the voltage value in the change curve and the target voltage.

[0091] Since the first voltage transformation module increases the first voltage signal according to a preset ratio, after obtaining the first voltage signal, the change curve of the second voltage signal can be predicted. As the voltage value in the change curve changes, the difference between it and the target voltage is calculated. By continuously adjusting the boost ratio, the voltage in the target voltage signal output by the battery voltage circuit can be made to be the target voltage.

[0092] With this implementation, because the first voltage conversion module increases the voltage according to a preset ratio, the voltage of the second voltage signal can be predicted using the first voltage signal, thereby generating a voltage variation curve for the second voltage signal. The voltage boost ratio is then adjusted based on the difference between the voltage values ​​in the variation curve and the target voltage. Because the variation curve is predicted, the required voltage boost ratio can be calculated in advance, improving the stability of the target voltage.

[0093] Optionally, in an implementation of this embodiment, adjusting the boost ratio of the second transformer module includes:

[0094] Adjust the duty cycle of the pulse width modulation signal of the switch tube in the second transformation module.

[0095] In one embodiment, the second voltage conversion module is a Boost circuit, which changes the boost ratio by changing the duty cycle.

[0096] It should be noted that when the battery voltage circuit includes two second transformer modules connected in parallel, the duty cycles of the two second transformer modules can be set to different duty cycles, thereby resulting in different boost ratios for the two second transformer modules. For example, the boost ratios for the two second transformer modules may be A1 and A2, respectively. When the boost ratio A1 is calculated to be required, the corresponding second transformer module is used for boosting, reducing the frequency of duty cycle adjustment.

[0097] By adopting this implementation method, the boost ratio is changed by adjusting the duty cycle, which is beneficial to improving the control accuracy of the boost ratio.

[0098] Optionally, in an implementation of this embodiment, the charging requirement information includes a charging requirement voltage;

[0099] Determining the target voltage of the battery according to the charging requirement information includes:

[0100] The target voltage is determined according to a difference between a preset voltage and the charging requirement voltage.

[0101] In one embodiment, the preset voltage is the battery bus voltage. Once the required charging voltage is determined, the target voltage is obtained by subtracting the required charging voltage from the preset voltage. It should be noted that the required charging voltage at this time represents the amount of reduction in the required battery voltage. As the battery ages and its internal electrical components age, the required voltage for charging decreases. Therefore, when determining the battery's charging voltage, the target voltage is obtained by subtracting the reduced voltage from the preset voltage.

[0102] With this implementation, the target voltage is calculated by using the preset voltage and the charging demand voltage, which is simple to calculate and easy to save computing resources.

[0103] Optionally, in an implementation of this embodiment, obtaining battery charging requirement information includes:

[0104] determining a charging voltage attenuation amplitude according to the remaining life of the battery;

[0105] The charging demand information is calculated based on the preset voltage and the charging voltage attenuation amplitude.

[0106] In one embodiment, the remaining life of the battery can be obtained using a variety of methods, and this embodiment does not limit the specific method of obtaining the information. For ease of understanding, for example, in one application scenario, the remaining life of the battery is obtained by subtracting the number of years of use from the preset maximum life of the battery. After obtaining the remaining life, the remaining life is compared with the maximum life to obtain the charging voltage attenuation amplitude.

[0107] In other embodiments, the charging voltage attenuation amplitude is determined by the battery's power reserve. Specifically, the actual charge of the battery when fully charged is obtained, and the actual charge is compared with the battery's maximum charge to obtain an attenuation ratio, which is used as the charging voltage attenuation amplitude.

[0108] With this implementation, the charging voltage attenuation amplitude is obtained through the remaining life of the battery, and then the charging voltage attenuation amplitude is used to calculate the charging demand information, so that the target voltage determined by the charging demand information is adapted to the actual usage of the battery, thereby improving the adaptability of the target voltage to the battery.

[0109] Optionally, in an implementation of this embodiment, the method further includes:

[0110] When the two second voltage transformation modules are alternately used to adjust the voltage value of the three-voltage signal, a charging rate of the battery is obtained;

[0111] If the charging rates corresponding to the two second transformer modules are different, the electronically controlled switches in the two second transformer modules are controlled to be turned on in sequence, and the current fluctuation amplitudes of the two second transformer modules when in use are detected. The second transformer module whose current fluctuation amplitude exceeds the preset amplitude threshold is determined to be the module to be repaired.

[0112] In the above embodiments of the present application, the descriptions of the various embodiments have their own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. The steps shown in the relevant flow charts can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flow charts, in some cases, the steps shown or described can be executed in an order different from that shown here. In other words, the order of steps described in the foregoing embodiments is only an example, and reasonable adjustment of the order of steps based on the content of the embodiments of the present application is also within the scope of protection of the embodiments of the present application.

[0113] The descriptions of the computer program product, computer-readable storage medium, and electronic device described above are similar to the descriptions of the method embodiments described above and have similar beneficial effects as the method embodiments. For technical details not disclosed in the computer program product, computer-readable storage medium, and electronic device of this application, please refer to the descriptions of the method embodiments of this application for understanding.

[0114] The sequence of the serial numbers or introduction of the embodiments of this application is for description only and does not represent the superiority or inferiority of the embodiments.

[0115] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as 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 interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0116] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0117] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0118] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer, or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, or a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)). It is worth noting that the computer-readable storage medium mentioned in the embodiments of the present application may be a non-volatile storage medium, in other words, a non-transient storage medium.

[0119] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in the embodiments of this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions. For example, the scene data of the current frame in the three-dimensional virtual scene, the client's device information, and the scene interaction information involved in the embodiments of this application are all obtained with full authorization.

[0120] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A battery voltage circuit, characterized in that: include: a first voltage transformation module, configured to increase the input first voltage signal according to a preset ratio to obtain a second voltage signal; a rectifier module, connected to the first transformer module, and configured to rectify the second voltage signal to obtain a third voltage signal; a second voltage transformation module, connected to the rectifier module, and configured to perform controllable voltage transformation on the third voltage signal to obtain a target voltage signal of the battery; Two second transformation modules are provided in parallel, and the two second transformation modules are alternately turned on; The second voltage conversion module includes a switch tube that can be controlled to be on or off, the switch tube includes a second MOS tube, and a resistor and an electronically controlled switch are connected in series between the gate and source of the second MOS tube; When the two second voltage transformation modules are alternately used to adjust the voltage value of the third voltage signal, a charging rate of the battery is obtained; If the charging rates corresponding to the two second transformer modules are different, the electronically controlled switches in the two second transformer modules are controlled to be turned on in sequence, and the current fluctuation amplitudes of the two second transformer modules when in use are detected. The second transformer module whose current fluctuation amplitude exceeds the preset amplitude threshold is determined to be the module to be repaired.

2. The battery voltage circuit according to claim 1, wherein: The switch tube is connected in parallel to the positive and negative electrodes of the output end of the voltage circuit.

3. The battery voltage circuit according to claim 2, characterized in that: A first MOS transistor is connected in series to the negative electrode of the output end of the voltage circuit. The first MOS transistor is configured to be in an off state when the switch tube is turned on. The body diode of the first MOS transistor serves as a freewheeling diode.

4. The battery voltage circuit according to claim 2, wherein: The drain of the second MOS transistor is connected to the positive electrode of the output end of the voltage circuit, and the source of the second MOS transistor is connected to the negative electrode of the output end of the voltage circuit.

5. A control method for a battery voltage circuit according to any one of claims 1 to 4, characterized in that: The method comprises: Acquiring a first voltage signal and battery charging requirement information; determining a target voltage of the battery based on charging demand information; The boost ratio of the second voltage conversion module is adjusted according to the first voltage signal and the target voltage, so that the voltage circuit outputs the target voltage.

6. The control method according to claim 5, characterized in that: The step of adjusting the voltage boost ratio of the second voltage conversion module according to the first voltage signal and the target voltage so that the voltage circuit outputs the target voltage includes: predicting a voltage variation curve in a second voltage signal according to the first voltage signal; The voltage boost ratio of the second voltage conversion module is adjusted according to the difference between the voltage value in the change curve and the target voltage.

7. The control method according to claim 6, characterized in that: The adjusting the boost ratio of the second voltage conversion module includes: Adjust the duty cycle of the pulse width modulation signal of the switch tube in the second transformation module.

8. The control method according to claim 5, characterized in that: The charging requirement information includes a charging requirement voltage; Determining the target voltage of the battery according to the charging requirement information includes: The target voltage is determined according to a difference between a preset voltage and the charging requirement voltage.

9. The control method according to claim 6, characterized in that: Obtain battery charging requirement information, including: determining a charging voltage attenuation amplitude according to the remaining life of the battery; The charging demand information is calculated based on the preset voltage and the charging voltage attenuation amplitude.

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