Battery voltage circuit and control method thereof

Abstract

The embodiment of the invention discloses a battery voltage circuit and a control method thereof, and belongs to the field of power electronics. The battery voltage circuit comprises a first voltage transformation module which is used for increasing an input first voltage signal according to a preset proportion to obtain a second voltage signal; the rectifying module is connected with the first voltage transformation module and used for rectifying the second voltage signal to obtain a third voltage signal; and the second voltage transformation module is connected with the rectification module and is used for carrying out controllable voltage transformation on the third voltage signal to obtain a target voltage signal of the battery. The embodiment of the invention has the technical effects that the second voltage transformation module can perform controllable voltage transformation on the third voltage signal, so that the target voltage signal can be matched with the charging voltage required by the battery, and the battery is not easy to damage due to too high, too low or unstable charging voltage.

Description

Technical Field

[0001] This application relates to the field of power electronics, and more particularly, to a battery voltage circuit and its control method. Background Art

[0002] In a traditional inverter, the battery voltage is a bus voltage obtained after boosting and rectifying. However, the bus voltage obtained in this way is uncontrollable, resulting in easy damage to the battery. Summary of the Invention

[0003] An embodiment of this application provides a battery voltage circuit and its control method to at least solve the technical problem of easy battery damage.

[0004] According to the first aspect of the embodiments of this application, a battery voltage circuit is provided, including: A first voltage transformation module, configured to increase an input first voltage signal according to a preset ratio to obtain a second voltage signal; A rectification module, connected to the first voltage transformation module, configured to rectify the second voltage signal to obtain a third voltage signal; A second voltage transformation module, connected to the rectification module, configured to controllably transform the third voltage signal to obtain a target voltage signal of the battery.

[0005] 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, and the battery is not easily damaged due to excessive, too low or unstable charging voltage.

[0006] Combined with the first aspect, in an alternative implementation of the embodiments of this application, two second voltage transformation modules are arranged in parallel, and the two second voltage transformation modules are alternately turned on.

[0007] With this implementation, the two second voltage transformation modules arranged in parallel are alternately turned on, which helps to reduce current ripple, share power, and improve the reliability of the voltage circuit.

[0008] Combined with the first aspect, in an alternative implementation of the embodiments of this application, the second voltage transformation module includes a switch tube that can be controlled to turn on and off, and the switch tube is connected in parallel to the positive and negative poles of the output end of the voltage circuit.

[0009] With this implementation, the third voltage signal is boosted by using the on and off of the switch tube, so that the boosting amplitude is controllable, and the boosting flexibility and controllability of the battery voltage are improved.

[0010] 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.

[0011] By adopting this implementation method, the first MOS tube can be used to control the on-off of the negative electrode of the output end of the voltage circuit, and at the same time, the body diode of the first MOS tube is used as a freewheeling diode, which protects the components in the voltage circuit while reducing the number of components in the voltage circuit and reducing the cost of the voltage circuit.

[0012] 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; A resistor and an electric control switch are connected in series between the gate and the source of the second MOS tube.

[0013] With this implementation, when the electric control switch is closed, the circuit between the gate and the source of the second MOS tube is turned on, and current flows through the resistor. By utilizing the fixed voltage drop between the gate and the source of the second MOS tube 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.

[0014] 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: Acquiring a first voltage signal and charging requirement information of a battery; determining a target voltage of the battery according to the 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.

[0015] By adopting this embodiment, the first voltage signal and the 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 the battery less likely to be damaged due to excessive, too low or unstable charging voltage.

[0016] In combination 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: predicting a voltage variation curve in a second voltage signal according to the first voltage signal; Adjust the boosting ratio of the second voltage conversion module according to the difference between the voltage value in the change curve and the target voltage.

[0017] With this implementation method, since the first voltage conversion module increases the voltage according to a preset ratio, the voltage condition of the second voltage signal can be predicted using the first voltage signal, thereby obtaining the change curve of the voltage in the second voltage signal. Then, the boosting ratio is adjusted according to the difference between the voltage value in the change curve and the target voltage. Because it is a predicted change curve, the boosting ratio that needs to be adjusted can be calculated in advance, improving the stability of the target voltage.

[0018] Combined with the second aspect, in an alternative implementation of the embodiment of the present application, adjusting the boosting ratio of the second voltage conversion module includes: Adjust the duty cycle of the pulse width modulation signal of the switching tube in the second voltage conversion module.

[0019] With this implementation method, changing the boosting ratio by adjusting the duty cycle is beneficial to improving the control accuracy of the boosting ratio.

[0020] Combined with the second aspect, in an alternative implementation of the embodiment of the present application, the charging demand information includes the charging demand voltage; Determining the target voltage of the battery according to the charging demand information includes: Determine the target voltage according to the difference between the preset voltage and the charging demand voltage.

[0021] With this implementation method, the target voltage is calculated from the preset voltage and the charging demand voltage, and the calculation is simple, which is easy to save computing resources.

[0022] Combined with the second aspect, in an alternative implementation of the embodiment of the present application, obtaining the charging demand information of the battery includes: Determine the charging voltage attenuation amplitude according to the remaining life of the battery; Calculate the charging demand information from the preset voltage and the charging voltage attenuation amplitude.

[0023] With this implementation method, the charging voltage attenuation amplitude is obtained from the remaining life of the battery, and then the charging demand information is calculated using the charging voltage attenuation amplitude, so that the target voltage determined by the charging demand information is adapted to the actual usage situation of the battery, improving the adaptability between the target voltage and the battery. Description of the Drawings

[0024] Figure 1 It is a structural block diagram of a battery voltage circuit provided by an embodiment of the present application; Figure 2 It is a structural block diagram of a battery voltage circuit provided by another embodiment of the present application; Figure 3 is a circuit diagram of a battery voltage circuit provided by an embodiment of the present application; Figure 4 is a circuit diagram of a battery voltage circuit provided by another embodiment of the present application; Figure 5 is a flowchart of a control method for a battery voltage circuit provided by an embodiment of the present application. Detailed implementation manners

[0025] To enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0026] It should be understood that the "multiple" 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 may represent A or B; the "and / or" herein is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the terms "first" and "second" do not limit the quantity and execution order, and the terms "first" and "second" do not necessarily indicate differences.

[0027] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0028] In a traditional inverter, the battery voltage is directly obtained as a Bus voltage after push-pull boosting and then synchronous rectification. There is no Boost boosting circuit added between the synchronous rectifier and the bus capacitor. In this case, the obtained Bus voltage is uncontrollable, resulting in easy damage to the battery.

[0029] Based on this, an embodiment of the present application provides a battery voltage circuit. Refer to Figure 1Schematic flow diagram of the battery voltage circuit shown, and the battery voltage circuit includes the following.

[0030] A first voltage transformation module for increasing the input first voltage signal according to a preset ratio to obtain a second voltage signal; A rectification module connected to the first voltage transformation module for rectifying the second voltage signal to obtain a third voltage signal; A second voltage transformation module connected to the rectification module for controllably transforming the third voltage signal to obtain the target voltage signal of the battery.

[0031] In one embodiment, the first voltage transformation module is a transformer, and the specific value of the preset ratio is related to the turns ratio of the transformer. That is to say, when the primary winding coil and the secondary winding coil of the transformer are determined, the preset ratio is determined. In this embodiment, the preset ratio of the first voltage transformation module is not specifically limited and can be set according to actual needs.

[0032] In one embodiment, the rectification module is used to rectify the second voltage signal. Specifically, the rectification module is used to rectify the second voltage signal of alternating current into the third voltage signal of direct current. It should be noted that as long as a rectification circuit capable of rectifying the second voltage signal can be used as the rectification module in this embodiment, so the specific circuit structure of the rectification module is not limited in this embodiment.

[0033] In one embodiment, when the second voltage transformation module transforms the third voltage signal, the amplitude of the transformation is controllable. For the sake of easy understanding, for example, in a specific application, by setting a switching tube in the second voltage transformation module and changing the duty cycle of the pulse width modulation signal, the on-off frequency of the switching tube is changed, thereby realizing controllable transformation.

[0034] Among them, the voltage of the target voltage signal is a preset value. That is to say, by adjusting the transformation amplitude or transformation ratio of the second voltage transformation module, the voltage of the third voltage signal is made to be the preset value.

[0035] Adopting 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, and the battery is not easily damaged due to excessive, too low or unstable charging voltage.

[0036] In a possible embodiment of the present application, as Figure 2 shown, two second voltage transformation modules are arranged in parallel, and the two second voltage transformation modules are alternately turned on.

[0037] In one embodiment, the input ends of two second transformer modules are both connected to the output end of the rectifier module, and the output ends of the two second transformer modules are both connected to the input end of the battery, such 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.

[0038] It should be noted that the two second transformer modules have the same structure and the same 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.

[0039] Adopting this embodiment, the two second transformer modules arranged in parallel conduct alternately, which helps to reduce current ripple, share power, and improve the reliability of the voltage circuit.

[0040] Optionally, in one implementation manner of this embodiment, the second transformer module includes a switch tube that can be controlled to be turned on and off, and the switch tube is connected in parallel between the positive and negative poles of the output end of the voltage circuit.

[0041] In one embodiment, the switch tube includes an electronically controllable switch, such as a triode, a MOS tube, etc., and this embodiment does not make specific limitations thereto. The switch tube is connected in parallel between the positive and negative poles of the output end of the voltage circuit, that is, between the positive and negative poles of the input end of the battery.

[0042] It should be noted that in a specific application scenario, a diode that is originally connected in parallel between the positive and negative poles of the output end of the voltage circuit is provided in the battery voltage circuit. Among them, the negative pole of the diode is connected to the positive pole of the output end of the voltage circuit, and the anode of the diode is connected to the negative pole of the output end of the voltage circuit. In this embodiment, the diode is replaced with a switch tube to form a boost circuit (Boost circuit) in the battery voltage circuit.

[0043] Adopting this implementation manner, the third voltage signal is boosted by controlling the on and off of the switch tube, such that the boost amplitude is controllable, and the boost flexibility and controllability of the battery voltage are improved.

[0044] Optionally, in one implementation manner of this embodiment, a first MOS tube is connected in series to the negative pole of the output end of the voltage circuit. The first MOS tube is in an off state when the switch tube is turned on, and the body diode of the first MOS tube serves as a freewheeling diode.

[0045] In one embodiment, the source pole of the first MOS tube is connected to the negative pole of the output end of the voltage circuit, and the drain pole of the first MOS tube is connected to the low-level end of the switch tube. The first MOS tube has a built-in body diode. The anode of the body diode is connected to the source pole of the first MOS tube, and the negative pole of the body diode is connected to the drain pole of the first MOS tube.

[0046] By adopting this implementation method, the first MOS tube can be used to control the on-off of the negative electrode of the output end of the voltage circuit, and at the same time, the body diode of the first MOS tube is used as a freewheeling diode, which protects the components in the voltage circuit while reducing the number of components in the voltage circuit and reducing the cost of the voltage circuit.

[0047] 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; A resistor and an electric control switch are connected in series between the gate and the source of the second MOS tube.

[0048] 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 by the current value required by the battery to achieve constant current charging of the battery.

[0049] With this implementation, when the electric control switch is turned on, the circuit between the gate and the source of the second MOS tube is turned on, and the current flows through the resistor. By utilizing the fixed voltage drop between the gate and the source of the second MOS tube 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.

[0050] In a specific implementation of an embodiment of the present application, a battery voltage circuit is taken as a battery charging circuit for example.

[0051] like Figure 3 As shown, it includes MOS transistor Q1, MOS transistor Q2, MOS transistor Q3, MOS transistor Q4, MOS transistor Q5, MOS transistor Q6, MOS transistor Q7 (that is, the second MOS transistor), MOS transistor Q8 (that is, the first MOS transistor), a transformer, an inductor L1, a capacitor C1 and a capacitor C2. Among them, the first voltage transformation module includes a transformer, the rectifier module includes MOS transistor Q3, MOS transistor Q4, MOS transistor Q5, MOS transistor Q6 and capacitor C1, and the second voltage transformation module includes inductor L1, MOS transistor Q7, MOS transistor Q8 and capacitor C2.

[0052] It should be noted that in order to use the MOS tube and the transformer, an external power supply will be connected. Figure 3As shown, the sources of MOS transistors Q1 and Q2 are both connected to the BAT- pin of the external power supply. The gate of MOS transistor Q1 is connected to the S2 pin of the external power supply, and the gate of MOS transistor Q2 is connected to the S1 pin of the external power supply. The primary winding coil of the transformer is respectively connected to the BAT+ pin of the external power supply, the drain of MOS transistor Q1, and the drain of MOS transistor Q2, so as to form a current loop on one side of the primary winding coil of the transformer.

[0053] 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 coil 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 coil of the transformer. The drains of MOS transistor Q3 and MOS transistor Q4 are both connected to the positive pole of inductor L1. The sources of MOS transistor Q5 and MOS transistor Q6 are both connected to the drain of MOS transistor Q8; the positive pole of capacitor C1 is connected to the positive pole of inductor L1, and the negative pole 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, and the gates of MOS transistor Q4 and MOS transistor Q5 are both connected to the S2 pin of the external power supply.

[0054] The negative pole of inductor L1 is connected to the positive pole of the voltage circuit output terminal. The drain of MOS transistor Q7 is connected to the positive pole of the voltage circuit output terminal. The source of MOS transistor Q7 is connected to the drain of MOS transistor Q8; the positive pole of capacitor C2 is connected to the positive pole of the voltage circuit output terminal, and the negative pole of capacitor C2 is connected to the negative pole of the voltage circuit output terminal; the source of MOS transistor Q8 is connected to the negative pole 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.

[0055] Among them, all pins of the external power supply are used to transmit electrical signals to control the on and off of the MOS transistors. Specifically, the electrical signals transmitted by different pins are different, which can specifically be different current magnitudes or different voltage magnitudes. This embodiment does not make specific limitations on this.

[0056] In one embodiment, the structures of the two second transformer modules are exactly the same and are connected in parallel between capacitor C1 and the voltage circuit output terminal, so the specific structure will not be elaborated here.

[0057] As Figure 4As shown, in one embodiment, in order to control the current value at the output end of the voltage circuit, a current control branch is provided in the second voltage transformation module. Specifically, the current control branch includes a resistor R1 and an electronic control switch. By using the fixed voltage drop between the gate and the source of the second MOS transistor and the fixed resistance value of the resistor R1, the current value output to the battery is constrained, so that a controllable and constant current value can be delivered to the battery. Since the second MOS transistor can change the voltage value output by the voltage circuit, in cooperation with the current control branch, the second voltage transformation module can control both the current and the voltage simultaneously.

[0058] An embodiment of the present application also provides a control method applied to the above battery voltage circuit, as Figure 5 shown, the method includes: S100. Obtain a first voltage signal and charging demand information of the battery.

[0059] In one embodiment, the first voltage signal is the input electrical signal of the first voltage transformation module, and its voltage value is the first voltage. The charging demand information includes information used to characterize the demand during battery charging, which can specifically be the demand for voltage or the demand for current. This embodiment does not limit the specific demand type of the charging demand information.

[0060] S102. Determine the target voltage of the battery according to the charging demand information.

[0061] Among them, the target voltage is the voltage actually output to the battery after being adjusted by the battery voltage circuit.

[0062] In one embodiment, when the charging demands characterized by the charging demand information are different, the determined target voltages are also different. Specifically, the target voltage can be determined by means of a preset relationship. This embodiment does not make specific limitations on this.

[0063] S104. Adjust the boosting ratio of the second voltage transformation module according to the first voltage signal and the target voltage, so that the voltage circuit outputs the target voltage.

[0064] In one embodiment, after the target voltage is determined, the difference between the target voltage and the first voltage signal can be calculated. According to the difference, the boosting ratio can be determined. Then, after being boosted by the second voltage transformation module, a target voltage signal with a voltage value equal to the target voltage is obtained.

[0065] By adopting this embodiment, the boosting ratio of the second voltage transformation module is determined by using the first voltage signal and the charging demand information, so that after being boosted by the second voltage transformation module, the voltage circuit outputs the target voltage, enabling the target voltage to match the charging voltage required by the battery, and making it less likely for the battery to be damaged due to excessive, too low, or unstable charging voltage.

[0066] Optionally, in an implementation manner of this embodiment, the adjusting the boosting ratio of the second voltage transformation module according to the first voltage signal and the target voltage so that the voltage circuit outputs the target voltage includes: Predicting the voltage change curve in the second voltage signal according to the first voltage signal; Adjusting the boosting ratio of the second voltage transformation module according to the difference between the voltage value in the change curve and the target voltage.

[0067] 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, calculating the difference between it and the target voltage, the voltage in the target voltage signal output by the battery voltage circuit can be made to be the target voltage by continuously adjusting the boosting ratio.

[0068] With this implementation manner, since the first voltage transformation module increases the voltage according to a preset ratio, the voltage condition of the second voltage signal can be predicted using the first voltage signal, thereby obtaining the voltage change curve in the second voltage signal. Then, the boosting ratio is adjusted according to the difference between the voltage value in the change curve and the target voltage. Because it is a predicted change curve, the boosting ratio that needs to be adjusted can be calculated in advance, improving the stability of the target voltage.

[0069] Optionally, in an implementation manner of this embodiment, the adjusting the boosting ratio of the second voltage transformation module includes: Adjusting the duty cycle of the pulse width modulation signal of the switching tube in the second voltage transformation module.

[0070] In an embodiment, the second voltage transformation module is a Boost circuit, and the boosting ratio is changed by changing the duty cycle.

[0071] It should be noted that when there are two second voltage transformation modules connected in parallel in the battery voltage circuit, the duty cycles in the two second voltage transformation modules can be set to different duty cycles, so that the two second voltage transformation modules have different boosting ratios. For example, the boosting ratios corresponding to the two second voltage transformation modules are A1 and A2 respectively. When it is calculated that the boosting ratio of A1 needs to be used, the corresponding second voltage transformation module is used for boosting, reducing the adjustment frequency of the duty cycle.

[0072] With this implementation manner, changing the boosting ratio by adjusting the duty cycle is beneficial to improving the control accuracy of the boosting ratio.

[0073] Optionally, in an implementation manner of this embodiment, the charging demand information includes the charging demand voltage; The determining the target voltage of the battery according to the charging demand information includes: Determine the target voltage according to the difference between the preset voltage and the charging required voltage.

[0074] In one embodiment, the preset voltage is the bus voltage of the battery. After the charging required voltage is determined, subtract the charging required voltage from the preset voltage, and the obtained difference is the target voltage. It should be noted that the charging required voltage at this time represents the amount of voltage loss required by the battery. As the service life of the battery increases and the internal electrical components age, the required voltage during battery charging will decrease. Therefore, when determining the charging voltage of the battery, subtract the reduced voltage amount from the preset voltage to obtain the target voltage.

[0075] Adopting this implementation method, the target voltage is calculated through the preset voltage and the charging required voltage, and the calculation is simple, which is easy to save computing resources.

[0076] Optionally, in an implementation manner of this embodiment, obtaining the charging required information of the battery includes: Determine the charging voltage attenuation amplitude according to the remaining life of the battery; Calculate the charging required information according to the preset voltage and the charging voltage attenuation amplitude.

[0077] In one embodiment, the remaining life of the battery can be obtained in various ways, and this embodiment does not limit the specific obtaining method. For the sake of understanding, for example, in an application scenario, subtract the used years from the preset maximum service years of the battery to obtain the remaining life of the battery. After obtaining the remaining life, compare the remaining life with the maximum service years to obtain the charging voltage attenuation amplitude.

[0078] In other implementation manners, determine the charging voltage attenuation amplitude through the stored power of the battery. Specifically, obtain the actual charge amount when the battery is fully charged, compare the actual charge amount with the maximum charge amount of the battery to obtain the attenuation ratio, and use the attenuation ratio as the charging voltage attenuation amplitude.

[0079] Adopting this implementation method, obtain the charging voltage attenuation amplitude through the remaining life of the battery, and then calculate the charging required information by using the charging voltage attenuation amplitude, so that the target voltage determined by the charging required information is adapted to the actual use situation of the battery, and the adaptability of the target voltage to the battery is improved.

[0080] Optionally, in an implementation manner of this embodiment, the method further includes: When alternately using two second voltage conversion modules to adjust the voltage value of the electric three voltage signal, obtain the charging rate of the battery; If the charging rates corresponding to two second voltage conversion modules are different, then control the electrical control switches in the two second voltage conversion modules to conduct in sequence, detect the current fluctuation amplitude when the two second voltage conversion modules are in use, and determine the second voltage conversion module with the current fluctuation amplitude exceeding the preset amplitude threshold as the module to be repaired.

[0081] In the above embodiments of the present application, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. The steps shown in the relevant flowcharts can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here. In other words, the order of the steps described in the foregoing embodiments is only an example, and a reasonable adjustment of the step order based on the content of the embodiments of the present application is also within the protection scope of the embodiments of the present application.

[0082] The descriptions of the above computer program products, computer-readable storage media, and electronic devices are similar to the descriptions of the above method embodiments and have beneficial effects similar to those of the method embodiments. For the technical details not disclosed in the computer program products, computer-readable storage media, and electronic devices of the present application, please refer to the descriptions of the method embodiments of the present application for understanding.

[0083] The serial numbers or the order of introduction of the embodiments of the present application are only for description and do not represent the superiority or inferiority of the embodiments.

[0084] In several embodiments provided by the present 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 illustrative. For example, the division of the units can be a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed with each other can be through some interfaces, and the indirect couplings or communication connections of the units or modules can be in an electrical or other form.

[0085] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0086] In addition, in each embodiment of the present application, each functional unit can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0087] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part 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, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired manner (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or a wireless manner (such as infrared, wireless, microwave, etc.). 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. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a digital versatile disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)), etc. It should be noted that the computer-readable storage medium mentioned in the embodiments of the present application can be a non-volatile storage medium, in other words, it can be a non-transitory storage medium. It should be noted that the information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.), and signals involved in the embodiments of the present application are all authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with the relevant laws, regulations, and standards of relevant countries and regions. For example, the scene data of the current frame in the three-dimensional virtual scene, the device information of the client, and the scene interaction information involved in the embodiments of the present application are all obtained under sufficient authorization.

[0088] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A battery voltage circuit, characterized in that, Comprising: A first voltage transformation module for increasing an input first voltage signal by a preset ratio to obtain a second voltage signal; A rectification module connected to the first voltage transformation module for rectifying the second voltage signal to obtain a third voltage signal; A second voltage transformation module connected to the rectification module for controllably transforming the third voltage signal to obtain a target voltage signal of the battery.

2. The battery voltage circuit according to claim 1, wherein Two second voltage transformation modules are arranged in parallel, and the two second voltage transformation modules are alternately turned on.

3. The battery voltage circuit according to claim 1 or 2, characterized in that The second voltage transformation module includes a switch tube that can be controlled to be turned on and off, and the switch tube is connected in parallel to the positive and negative poles of the output end of the voltage circuit.

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

5. The battery voltage circuit according to claim 3, characterized in that, The switch tube includes a second MOS tube. The drain of the second MOS tube is connected to the positive pole of the output end of the voltage circuit, and the source of the second MOS tube is connected to the negative pole of the output end of the voltage circuit; A resistor and an electronic control switch are connected in series between the gate and the source of the second MOS tube.

6. A control method applied to the battery voltage circuit according to any one of claims 1-5, characterized in that, The method includes: Obtaining a first voltage signal and charging demand information of the battery; Determining the target voltage of the battery according to the charging demand information; Adjusting the boosting ratio of the second voltage transformation module according to the first voltage signal and the target voltage so that the voltage circuit outputs the target voltage.

7. The control method according to claim 6, wherein The adjusting the boosting ratio of the second voltage transformation module according to the first voltage signal and the target voltage so that the voltage circuit outputs the target voltage includes: Predicting the voltage change curve in the second voltage signal according to the first voltage signal; Adjusting the boosting ratio of the second voltage transformation module according to the difference between the voltage value in the change curve and the target voltage.

8. The control method according to claim 7, wherein The adjusting the boosting ratio of the second voltage transformation module includes: Adjusting the duty cycle of the pulse width modulation signal of the switch tube in the second voltage transformation module.

9. The control method according to claim 6, wherein The charging demand information includes a charging demand voltage; The determining the target voltage of the battery according to the charging demand information includes: Determining the target voltage according to the difference between the preset voltage and the charging demand voltage.

10. The control method according to claim 7, characterized in that Obtaining the charging demand information of the battery includes: Determining the charging voltage attenuation amplitude according to the remaining life of the battery; Calculating the charging demand information according to the preset voltage and the charging voltage attenuation amplitude.

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