Battery energy consumption control circuit, method and device

Abstract

The invention provides a battery energy consumption control circuit, method and device, the control circuit comprises a single battery, a main power loop, an auxiliary power supply loop, a controllable LDO, a driving unit and an MCU, the single battery is connected to the main power loop and the auxiliary power supply loop, the main power loop and the auxiliary power supply loop are connected with the MCU through the controllable LDO, and the driving unit is connected with the MCU through the driving unit. The output of the driving unit is connected with the main power loop, the input of the driving unit is connected with the MCU, a first channel is arranged between the MCU and the driving unit, a second channel is arranged between the MCU and the auxiliary power supply loop, and a third channel is arranged between the MCU and the controllable LDO. Thus, the connection relation between all parts of the battery energy consumption control circuit and the communication function of different channels are fully utilized, fine control over battery energy consumption in the shutdown process is achieved, the problems that when a BMS-free inverter is shut down, battery power consumption is too fast, and standby power consumption is too large are solved, and the reliability and energy saving performance of the whole system are improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery energy consumption control circuit, method and device. Background Art

[0002] In an inverter without a battery management system (BMS), the auxiliary winding of the main transformer relays power after startup to maintain a stable dual power supply for the system. However, this power supply method has many problems. When shutting down, if the startup circuit is simply turned off, the auxiliary power supply of the main transformer will continue to maintain power due to the presence of capacitors in the power supply circuit, causing the main circuit to continue to obtain current from the battery. In addition, after the auxiliary power supply of the main circuit is turned off, the battery can also provide unstable power to the microcontroller unit (MCU) without boosting the voltage through the auxiliary boost diode, which will not only increase the power consumption of the control circuit, but also because there is relay power supply in the system and there is a lack of BMS or switching circuit in the battery to main power circuit, and the system cannot be completely shut down through the active switch, resulting in continuous power consumption of the battery. Even if the battery boost circuit is turned off, the circuit will still directly consume power with the help of the inherent inductance and diode circuit of the boost circuit, resulting in excessive standby power consumption, which in turn causes over-discharge of the system battery, which poses a serious safety hazard to long-distance transportation and inventory of products. Summary of the invention

[0003] The main purpose of the present application is to provide a battery energy consumption control circuit, method and device, aiming to solve the problem of high battery power consumption when the existing inverter without BMS is in standby mode.

[0004] To achieve the above-mentioned purpose, the present application provides a battery energy consumption control circuit, which includes: a single battery, a main power circuit, an auxiliary power supply circuit, a controllable low voltage dropout regulator LDO, a drive unit and a microcontroller unit MCU, the single battery is respectively connected to the main power circuit and the auxiliary power supply circuit, and the main power circuit and the auxiliary power supply circuit are both connected to the MCU through the controllable LDO, the output of the drive unit is connected to the main power circuit, the input of the drive unit is connected to the MCU, and a first channel is set between the MCU and the drive unit, a second channel is set between the MCU and the auxiliary power supply circuit, and a third channel is set between the MCU and the controllable LDO.

[0005] Optionally, the main power circuit includes a first power switch tube, a transformer and a buffer electrical device. The first power switch tube is connected in a topological structure and is used to convert the DC voltage input by the single battery into an output high-frequency pulse voltage. The transformer is arranged after the first power switch tube, and the high-frequency pulse voltage output by the first power switch tube is output after passing through the primary winding and secondary winding of the transformer. The buffer electrical device includes a resistor, a capacitor and a diode.

[0006] Optionally, the auxiliary power supply circuit includes a second power switch tube, an auxiliary winding, a filter capacitor and a filter diode, the filter capacitor and the filter diode are both arranged before the second power switch tube, and the auxiliary winding is arranged after the second power switch tube.

[0007] Optionally, when the MCU receives a preset signal for instructing shutdown, the drive unit, the auxiliary power supply circuit and the controllable LDO are controlled in sequence through the first channel, the second channel and the third channel to respond to the preset signal in a timing sequence.

[0008] To achieve the above object, the present application also provides a control method based on the above battery energy consumption control circuit, the control method comprising: When receiving a shutdown instruction, the MCU sends a first preset instruction to the drive unit through the first channel, where the first preset instruction is used to instruct the drive unit to cut off the current path with the main power circuit; After the MCU sends the second preset instruction to the auxiliary power supply circuit through the second channel, the third preset instruction is sent to the controllable LDO through the third channel, the second preset instruction is used to instruct the preset power supply module in the auxiliary power supply circuit to stop outputting voltage, and the third preset instruction is used to instruct the controllable LDO to output a voltage value of 0 to the MCU. When the output voltage value of the controllable LDO to the MCU is 0, the single battery stops outputting voltage to the preset power supply module.

[0009] Optionally, the method further comprises: During system operation, the MCU receives a first feedback signal of the main power circuit through the first channel, receives a second feedback signal of the auxiliary power supply circuit through the second channel, and receives a third feedback signal of the controllable LDO through the third channel. The first feedback signal, the second feedback signal, and the third feedback signal are respectively used to indicate the operating status of the electrical components in the main power circuit, the electrical components in the auxiliary power supply circuit, and the controllable LDO.

[0010] Optionally, the second preset instruction includes instructing the output voltage of the preset power supply module to drop below a preset threshold before instructing the preset power supply module in the auxiliary power supply circuit to stop outputting the voltage, the preset threshold is determined based on the minimum operating voltage of the subsequent circuit in the auxiliary power supply circuit, and after the output voltage drops below the preset threshold, after a preset delay time has passed, instructing the preset power supply module to stop outputting the voltage, and the preset delay time is set according to the discharge characteristics of the energy storage element in the auxiliary power supply circuit.

[0011] To achieve the above object, the present application also provides a control device based on the above battery energy consumption control circuit, the control device comprising: a first receiving module, configured to cause the MCU to send a first preset instruction to the drive unit through the first channel when receiving a shutdown instruction, wherein the first preset instruction is used to instruct the drive unit to cut off a current path with the main power circuit; a sending module, configured to send a third preset instruction to the controllable LDO through the third channel after the MCU sends the second preset instruction to the auxiliary power supply circuit through the second channel, wherein the second preset instruction is used to instruct a preset power supply module in the auxiliary power supply circuit to stop outputting voltage, and the third preset instruction is used to instruct the controllable LDO to output a voltage value of 0 to the MCU, and when the output voltage value of the controllable LDO to the MCU is 0, the single battery stops outputting voltage to the preset power supply module.

[0012] Optionally, the device further comprises: The second receiving module is used for, during the operation of the system, the MCU receives a first feedback signal of the main power circuit through the first channel, receives a second feedback signal of the auxiliary power supply circuit through the second channel, and receives a third feedback signal of the controllable LDO through the third channel, wherein the first feedback signal, the second feedback signal and the third feedback signal are respectively used to indicate the operating status of the electrical components in the main power circuit, the electrical components in the auxiliary power supply circuit and the controllable LDO.

[0013] Optionally, the second preset instruction includes instructing the output voltage of the preset power supply module to drop below a preset threshold before instructing the preset power supply module in the auxiliary power supply circuit to stop outputting the voltage, the preset threshold is determined based on the minimum operating voltage of the subsequent circuit in the auxiliary power supply circuit, and after the output voltage drops below the preset threshold, after a preset delay time has passed, instructing the preset power supply module to stop outputting the voltage, and the preset delay time is set according to the discharge characteristics of the energy storage element in the auxiliary power supply circuit.

[0014] To achieve the above purpose, the present application also provides an electronic device, which adopts the following technical solution: The electronic device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of any one of the control methods for a battery energy consumption control circuit proposed in the embodiments of the present application are implemented.

[0015] To achieve the above objectives, the present application also provides a computer-readable storage medium, which adopts the following technical solution: The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps of any one of the control methods for the battery energy consumption control circuit proposed in the embodiments of the present application are implemented.

[0016] To achieve the above objectives, the present application also provides a computer program product, which adopts the following technical solution: The computer program product includes computer instructions, which, when executed by a processor, implement the steps of any method for controlling a battery energy consumption control circuit proposed in the embodiments of the present application.

[0017] Compared with the prior art, the embodiments of the present application have the following beneficial effects: In the embodiment of the present application, through the first channel between the MCU and the driving unit, the driving signal of the power switch tube in the main power circuit can be accurately adjusted according to the load change in real time, so that the main power circuit can work with higher efficiency under different load conditions, avoiding the waste of battery energy caused by overdriving or underdriving. The third channel between the MCU and the controllable LDO realizes the dynamic adjustment of the controllable LDO output voltage. During the operation of the system, the power supply voltage of the MCU is flexibly changed according to the battery power and system power consumption requirements, which can not only ensure the normal operation of the MCU, but also reduce the power consumption of the controllable LDO when the battery power is low or the system is under low load, further reducing the energy consumption of the battery. In addition, the auxiliary power supply circuit works in conjunction with the main power circuit to provide stable dual power supply during system startup and operation. Through the second channel between the MCU and the auxiliary power supply circuit, the output voltage of the auxiliary power supply circuit can be monitored and adjusted in real time to ensure that it can stably provide supplementary power to the system under various working conditions, thereby improving the stability of system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is one of the structural diagrams of the battery energy consumption control circuit provided in the embodiment of the present application; Figure 2 This is the second structural diagram of the battery energy consumption control circuit provided in the embodiment of the present application; Figure 3 is a flow chart of a control method of a battery energy consumption control circuit provided in an embodiment of the present application; Figure 4 is a structural schematic diagram of a control device for a battery energy consumption control circuit provided in an embodiment of the present application; Figure 5 This is a basic structural block diagram of the electronic device of this embodiment. DETAILED DESCRIPTION

[0020] The control method of the battery energy consumption control circuit provided in the embodiment of the present application is applied to the control device of the battery energy consumption control circuit. Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as those generally understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned figures are used to distinguish different objects, not to describe a specific order.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] refer to Figure 1 to Figure 2 The present application provides a battery energy consumption control circuit, comprising: a single battery, a main power circuit, an auxiliary power supply circuit, a controllable low-dropout regulator (LDO), a driving unit and a microcontroller unit MCU, wherein the single battery is respectively connected to the main power circuit and the auxiliary power supply circuit, and the main power circuit and the auxiliary power supply circuit are both connected to the MCU through the controllable LDO, the output of the driving unit is connected to the main power circuit, the input of the driving unit is connected to the MCU, and a first channel is set between the MCU and the driving unit, a second channel is set between the MCU and the auxiliary power supply circuit, and a third channel is set between the MCU and the controllable LDO.

[0023] Exemplarily, the positive and negative electrodes of a single battery can be connected to the corresponding input ends of the main power circuit and the auxiliary power supply circuit, respectively. The main power circuit adopts a push-pull topology structure, including two power switch tubes, the power switch tube is connected in series with the primary winding of the transformer, and a buffer circuit composed of a capacitor and a resistor is connected in parallel at both ends of the primary winding to absorb the peak voltage generated when the switch tube is switched. The secondary winding of the transformer is connected to a diode rectifier bridge, and the rectified voltage is output through a filter circuit composed of an inductor and a capacitor to output a stable DC voltage. This output is connected to the load on the one hand and to the input end of the controllable LDO on the other hand, and together with the output of the auxiliary power supply circuit, provides power supply selection for the MCU. The auxiliary power supply circuit can use the auxiliary winding of the main transformer. After the auxiliary winding output is rectified by a diode, it is connected to a voltage stabilizing circuit composed of a voltage stabilizing diode and a resistor. The voltage after stabilization is filtered by a capacitor and then connected to the other input end of the controllable LDO. The drive unit can be composed of a special drive chip, whose output ends are respectively connected to the gates of the power switch tubes in the main power circuit, and the input end is connected to the MCU through the first channel to ensure reliable transmission and electrical isolation of the control signal. The second channel connects the MCU with the cathode of the voltage-stabilizing diode in the auxiliary power supply circuit to monitor and control the output voltage of the auxiliary power supply circuit. The third channel connects the MCU with the controllable LDO to enable the MCU to accurately adjust the output voltage of the controllable LDO.

[0024] When the system starts, the MCU first initializes the controllable LDO through the third channel and sets its output voltage to 3.3V to ensure that the MCU can start normally. Then, the MCU sends a startup signal to the drive unit through the first channel, and the drive unit starts to generate drive pulses, so that the power switch tube in the main power circuit is alternately turned on and off at a certain frequency, converting the DC voltage of a single battery into a high-frequency pulse voltage. After transformer boosting and rectification and filtering, it provides a stable DC voltage for the load and also provides working power for the entire system. During the startup process, the MCU monitors the output voltage of the auxiliary power supply circuit through the second channel to ensure that it rises within the normal range. If an abnormality is found, the working parameters of the drive unit are adjusted in time or corresponding protection measures are taken.

[0025] If the power supply U1 is turned off directly, the circuit will continue to work and cannot be shut down due to the existence of VCC. Based on this, when the shutdown command is received, the MCU starts the shutdown procedure. First, the first preset command is sent to the drive unit through the first channel (EN1 signal related), that is, to stop generating the PWM signal that drives the power switch tube in the main power circuit. After receiving the command, the drive unit immediately stops outputting PWM pulses, the power switch tube is turned off, and the current path in the main power circuit is cut off, thereby stopping the acquisition of energy from the battery and stopping the power conversion work. After turning off EN1, PWM1 and PWM2 no longer work, causing the T1D coil to lose voltage, effectively preventing the continuous energy consumption of the main power circuit.

[0026] After turning off EN3, U1 no longer works, but the battery BAT + can still provide a voltage of about 2V-4V to VCC through L1 and D1. Therefore, it is necessary to deal with the residual voltage of the auxiliary power supply circuit to reduce its adverse effects on the system. Specifically, the MCU sends a second preset instruction to the auxiliary power supply circuit through the second channel (EN3 signal related). The MCU first reads the voltage value across the capacitor in the auxiliary power supply circuit, calculates a suitable voltage drop slope (such as 0.2V every 2 milliseconds) based on its energy storage, and then gradually reduces the cathode voltage of the voltage regulator diode according to this slope. When the voltage drops below 2V, wait for a preset delay time of 3 milliseconds, and then control the voltage regulator circuit through the second channel to completely stop the output voltage.

[0027] Finally, the MCU sends a third preset instruction to the controllable LDO through the third channel (EN2 signal related) to set the output voltage value of the controllable LDO to the MCU to 0V. After the controllable LDO receives the instruction, the internal switch circuit is activated to pull the output voltage down to 0V, thereby cutting off the power supply to the MCU. After turning off EN2, the output voltage of the LDO will drop to about 0V, preventing the MCU from operating abnormally near the undervoltage protection threshold (2V-4V) and causing excessive power consumption. At this time, the single battery stops outputting voltage to the preset power supply module in the auxiliary power supply circuit, and the entire system enters a low-power shutdown state, leaving only the sampling circuit of the high-resistance voltage divider at the single battery end in operation, and its power consumption is extremely low and can be ignored.

[0028] In this embodiment, through the first channel (EN1 signal control) between the MCU and the drive unit, the drive signal (such as PWM signal) of the power switch tube in the main power circuit can be accurately adjusted in real time according to the load change, so that the main power circuit can work at a higher efficiency under different load conditions, avoiding the waste of battery energy caused by over-driving or under-driving. The third channel (EN2 signal control) between the MCU and the controllable LDO realizes the dynamic adjustment of the output voltage of the controllable LDO. During the operation of the system, the power supply voltage of the MCU is flexibly changed according to the battery power and system power consumption requirements, which can not only ensure the normal operation of the MCU, but also reduce the power consumption of the controllable LDO when the battery power is low or the system is under low load, further reducing the energy consumption of the battery. In addition, the auxiliary power supply circuit works in conjunction with the main power circuit to provide stable dual power supply during system startup and operation. Through the second channel (EN3 signal control) between the MCU and the auxiliary power supply circuit, the output voltage of the auxiliary power supply circuit can be monitored and adjusted in real time to ensure that it can stably provide supplementary power to the system under various working conditions, thereby improving the stability of system operation.

[0029] Moreover, during the shutdown process, a complete shutdown logic is implemented based on the orderly control of the EN1, EN2, and EN3 signals. First, the current path of the main power circuit is cut off (through the EN1 signal), then the residual voltage of the auxiliary power supply circuit is properly handled (through the EN3 signal), and finally the power supply of the MCU is turned off (through the EN2 signal), avoiding the battery over-discharge caused by residual energy in the circuit during the shutdown process. This not only extends the battery life, but also improves the safety of the product during long-term storage (such as sea transportation storage or long-term storage in warehouses), prevents safety hazards caused by battery over-discharge (such as battery leakage, explosion, etc.), and reduces product maintenance costs and safety risks.

[0030] Optionally, the main power circuit includes a first power switch tube, a transformer and a buffer electrical device. The first power switch tube is connected in a topological structure and is used to convert the DC voltage input by the single battery into an output high-frequency pulse voltage. The transformer is arranged after the first power switch tube, and the high-frequency pulse voltage output by the first power switch tube is output after passing through the primary winding and secondary winding of the transformer. The buffer electrical device includes a resistor, a capacitor and a diode.

[0031] In this example, the first power switch tube in the main power circuit can be connected using a specific topology, such as a full-bridge topology, a half-bridge topology, a push-pull topology, etc. Taking the full-bridge topology as an example, four power switch tubes (set as Q1, Q2, Q3, Q4) can be included to form a bridge arm structure. When the system is running, the MCU controls the on and off sequence of these power switch tubes through the drive unit. In a switching cycle, Q1 and Q4 are turned on at the same time, and Q2 and Q3 are turned off at the same time. At this time, the current flows from the positive electrode of a single battery through Q1, the primary winding of the transformer, and Q4 back to the negative electrode of the battery, and a magnetic field in one direction is established in the primary winding of the transformer; then Q1 and Q4 are turned off, Q2 and Q3 are turned on at the same time, and the current flows in the opposite direction through the primary winding of the transformer. Through this alternating conduction method, the DC voltage input by the single battery is converted into a high-frequency pulse voltage. In this way, a higher power conversion efficiency can be achieved, and the adjustment range of the output voltage is increased, which can be applied to loads with a variety of different voltage requirements.

[0032] Optionally, the auxiliary power supply circuit includes a second power switch tube, an auxiliary winding, a filter capacitor and a filter diode, the filter capacitor and the filter diode are both arranged before the second power switch tube, and the auxiliary winding is arranged after the second power switch tube.

[0033] In this example, the filter capacitor is used to smooth the voltage signal input to the auxiliary power supply circuit and filter out the high-frequency clutter and ripple components that may exist therein. Although the DC power output by a single battery is relatively stable, in the actual circuit, due to factors such as line inductance and electromagnetic interference of other circuit components, there will still be some small voltage fluctuations. The filter capacitor can absorb these high-frequency fluctuations by using its charging and discharging characteristics, making the voltage entering the subsequent circuit smoother and more stable, and providing a relatively pure DC input environment for the entire auxiliary power supply circuit. The filter diode plays a role in preventing reverse current. When the circuit is working normally, the current flows in the set direction to provide power for subsequent components. However, in some special cases, such as when the power supply voltage fluctuates momentarily or when other circuit parts are abnormal, reverse current may be generated. With its unidirectional conductivity, the filter diode can block the reverse current, avoid damage to other components in the auxiliary power supply circuit, and ensure the normal working order of the circuit and the safety of each component.

[0034] The second power switch tube can be turned on and off according to the needs of the system and the control signal of the MCU. For example, in certain specific working modes or when the system is in different load states, the MCU can send corresponding instructions to control the conduction time and frequency of the second power switch tube, so as to adjust the power output of the auxiliary power supply circuit. The auxiliary winding is arranged after the second power switch tube, and it is closely connected with the transformer in the main power circuit. When the primary winding of the transformer in the main power circuit has current passing through it and generates an alternating magnetic field under the action of the first power switch tube, the auxiliary winding will induce a voltage accordingly. The amplitude, frequency and other characteristics of this induced voltage depend on factors such as the number of turns of the auxiliary winding itself and the turn ratio relationship between the auxiliary winding and the main winding. For example, by reasonably designing the number of turns of the auxiliary winding, an AC voltage of a specific amplitude can be obtained, and then after subsequent rectification, filtering and other processing, it is converted into a stable DC voltage, providing a suitable power supply voltage for some key circuits in the system (such as the functional module of the MCU), further enhancing the stability and reliability of the system operation.

[0035] Optionally, when the MCU receives a preset signal for instructing shutdown, the drive unit, the auxiliary power supply circuit and the controllable LDO are controlled in sequence through the first channel, the second channel and the third channel to respond to the preset signal in a timing sequence.

[0036] Traditional shutdown methods often simply cut off the power supply of a certain circuit or stop the operation of a certain part, without considering the residual energy in the circuit and the mutual influence between different circuit modules. For example, in some simple shutdown designs, only the input switch of the main power circuit may be turned off, but due to the presence of energy storage components such as capacitors and inductors, residual current will still flow in the circuit, causing the battery to continue to consume power. Moreover, since there is no fine control over the power supply of the auxiliary power supply circuit and the MCU, the MCU may enter an abnormal working state due to unstable power supply during the shutdown process, further increasing battery energy consumption and system instability.

[0037] In this embodiment, shutting down the main power circuit first can stop the main energy consumption part of the system first, avoiding the continued consumption of a large amount of battery energy during the shutdown process. Then processing the auxiliary power supply circuit can solve the residual voltage problem that may be caused by the auxiliary power supply circuit during shutdown, and prevent battery power consumption caused by residual voltage. Finally, turn off the power supply of the MCU to ensure that the control core of the entire system stops working, avoiding additional power consumption due to the abnormal state of the MCU. Such timing control avoids mutual interference between different circuit modules. Comprehensively consider various factors in the circuit, and effectively solve the problems existing in the traditional shutdown method. It can reduce the standby power consumption to an extremely low level, greatly reduce the power consumption of the battery in the shutdown state, extend the battery life and the storage time of the product, and at the same time improve the stability and safety of the system, providing a more reliable guarantee for the use of BMS-free inverters in various application scenarios.

[0038] refer to Figure 3 , shows a flow chart of a control method based on the above-mentioned battery energy consumption control circuit provided by an embodiment of the present application. Figure 3 As shown, a control method of a battery energy consumption control circuit provided in an embodiment of the present application includes the following steps: S310, when receiving a shutdown instruction, the MCU sends a first preset instruction to the drive unit through the first channel, where the first preset instruction is used to instruct the drive unit to cut off a current path with the main power circuit; In this step, when the system receives a shutdown command, the MCU immediately sends a first preset command to the drive unit through the first channel. The drive unit can generate a drive signal, such as a PWM signal, to control the on and off of a power switch tube (such as a MOSFET or an IGBT, etc.) in the main power circuit. By receiving the first preset command, the drive unit stops outputting these drive signals, thereby making all the power switches in the main power circuit in the off state.

[0039] For example, in a main power circuit using a full-bridge topology, the PWM signal output by the drive unit will control the four power switches to turn on and off alternately according to a certain timing during normal operation, thereby achieving power conversion operations such as converting the DC voltage input by a single battery into a high-frequency pulse voltage. However, after receiving the first preset instruction, these power switches no longer receive the drive pulse, thereby blocking the current flow path in the main power circuit, thereby achieving the purpose of cutting off the current path to the main power circuit. This step can quickly prevent the main power circuit from continuing to obtain electrical energy from the battery, effectively reducing the battery energy consumption in the initial stage of shutdown, because the main power circuit is usually one of the main consumers of battery energy when the system is running.

[0040] S320. After the MCU sends the second preset instruction to the auxiliary power supply circuit through the second channel, the third preset instruction is sent to the controllable LDO through the third channel, wherein the second preset instruction is used to instruct a preset power supply module in the auxiliary power supply circuit to stop outputting voltage, and the third preset instruction is used to instruct the controllable LDO to output a voltage value of 0 to the MCU. When the output voltage value of the controllable LDO to the MCU is 0, the single battery stops outputting voltage to the preset power supply module.

[0041] After completing the operation of the drive unit, the MCU can send a second preset instruction to the auxiliary power supply circuit through the second channel. The preset power supply module in the auxiliary power supply circuit provides supplementary power supply for some circuits (such as the functional modules of the MCU, etc.) during the operation of the system to maintain the stable operation of the system. However, when shutting down, if it continues to output voltage, it will cause unnecessary power consumption of the battery. Therefore, the second preset instruction is intended to instruct the preset power supply module to stop outputting voltage. For example, the auxiliary power supply circuit may include a voltage stabilizing circuit, an output branch after rectification and filtering, etc. to constitute a preset power supply module. The instruction sent by the MCU will act on the control elements in the voltage stabilizing circuit (such as adjusting the working state of the voltage stabilizing diode, changing the conduction of the relevant switch tube, etc.), or cut off the connection point in the output branch, thereby gradually stopping the voltage output of the module and reducing the battery energy consumption caused by the continuous power supply of the auxiliary power supply circuit.

[0042] Then, the MCU can send a third preset instruction to the controllable LDO through the third channel. The third channel ensures effective communication between the MCU and the controllable LDO, and facilitates the precise control of the controllable LDO. The controllable LDO can provide a stable and appropriate power supply voltage for the MCU in the system to ensure that the MCU can work normally. However, during the shutdown process, if the controllable LDO continues to output voltage to the MCU, the MCU may be in an unstable working state, which in turn causes additional power consumption. For example, the MCU may cause misoperation of the internal module and abnormal current consumption due to abnormal power supply conditions such as undervoltage. Therefore, the controllable LDO is instructed to adjust the output voltage value of the MCU to 0 through the third preset instruction. After receiving the instruction, the controllable LDO reduces the output voltage to 0V through the internal circuit adjustment mechanism (such as controlling the internal power tube to be cut off, etc.), completely cuts off the power supply of the MCU, and stops it from working. When the output voltage value of the controllable LDO to the MCU is 0, the entire system enters a state of extremely low power consumption, and the work of each part of the circuit is basically stopped at this time. Since the system's control core MCU has stopped working, the circuit no longer needs to obtain power from the battery to maintain the operation of the preset power supply module, and the single battery naturally stops outputting voltage to the preset power supply module in the auxiliary power supply circuit.

[0043] In this embodiment, through clear steps and orderly instruction sending, the connection relationship between the various parts of the battery energy consumption control circuit and the communication functions of different channels are fully utilized to achieve fine control of battery energy consumption during the shutdown process, solve the problems of excessive battery consumption and excessive standby power consumption that may occur when the inverter without BMS is shut down, and improve the reliability and energy saving of the entire system.

[0044] Optionally, the method further comprises: During system operation, the MCU receives a first feedback signal of the main power circuit through the first channel, receives a second feedback signal of the auxiliary power supply circuit through the second channel, and receives a third feedback signal of the controllable LDO through the third channel. The first feedback signal, the second feedback signal, and the third feedback signal are respectively used to indicate the operating status of the electrical components in the main power circuit, the electrical components in the auxiliary power supply circuit, and the controllable LDO.

[0045] In this example, the first feedback signal in the main power circuit is mainly used to indicate the operating status of various electrical components therein. The main power circuit contains important electrical components such as power switch tubes, transformers, buffer electrical components (RCD buffer circuits composed of resistors, capacitors and diodes, etc.). Based on the received first feedback signal, the MCU will take corresponding response strategies. If it is found that the conduction time of the power switch tube is too long, resulting in a rapid increase in battery energy consumption (for example, exceeding the reasonable conduction time range set according to the load), the MCU can send adjustment instructions to the drive unit in time through the first channel, correct the duty cycle of the drive signal (such as PWM signal), shorten the conduction time of the power switch tube, thereby reducing the power consumption of the main power circuit and achieving effective control of battery energy consumption.

[0046] The second feedback signal in the auxiliary power supply circuit focuses on the operating status of various electrical components therein. The auxiliary power supply circuit includes key electrical components such as the second power switch tube, auxiliary winding, filter capacitor and filter diode. When the MCU receives the second feedback signal, it will make corresponding adjustments based on the situation reflected by the signal. If the second power switch tube is found to be overheated, the MCU can adjust the frequency or duty cycle of its drive signal to appropriately reduce its working intensity to avoid damage to the switch tube due to overheating and cause failure of the auxiliary power supply circuit, ensure that it can continuously and stably provide supplementary power to the system, maintain the overall stable operation of the system, and avoid additional consumption of battery energy due to system restart caused by unstable auxiliary power supply.

[0047] The third feedback signal of the controllable LDO mainly informs the MCU of its own operating status. This includes key parameters such as the actual value of the output voltage, the output current, and the internal temperature (if there is a relevant monitoring function). Based on the third feedback signal, the MCU can optimize and control the controllable LDO in real time. When it is found that the output voltage of the controllable LDO deviates from the set value, the MCU can send an adjustment instruction to the controllable LDO through the third channel to make the internal regulation circuit make corresponding adjustments (such as changing the conduction degree of the internal power tube, etc.), restore the output voltage to the normal range, and ensure that the MCU can work at a stable and appropriate voltage, avoiding abnormal operation of the MCU due to abnormal voltage and increasing battery energy consumption.

[0048] In this way, by continuously receiving these three different feedback signals during system operation, the MCU can achieve refined management of the key parts of the entire battery energy consumption control circuit, promptly discover and solve possible problems, and optimize the working status of each part. This ensures effective control of battery energy consumption while ensuring stable system operation, thereby improving battery utilization efficiency and the reliability and safety of the entire system.

[0049] Optionally, the second preset instruction includes instructing the output voltage of the preset power supply module to drop below a preset threshold before instructing the preset power supply module in the auxiliary power supply circuit to stop outputting the voltage, the preset threshold is determined based on the minimum operating voltage of the subsequent circuit in the auxiliary power supply circuit, and after the output voltage drops below the preset threshold, after a preset delay time has passed, instructing the preset power supply module to stop outputting the voltage, and the preset delay time is set according to the discharge characteristics of the energy storage element in the auxiliary power supply circuit.

[0050] In this example, after the output voltage drops below the preset threshold, the energy in the energy storage element can be fully released after the preset delay time. This allows the entire auxiliary power supply circuit to reach an ideal state when shutting down, that is, all residual energy that may cause the battery to continue to consume power has been properly handled, and the subsequent circuits have also stopped working smoothly. When the preset power supply module is instructed to stop outputting voltage, the entire auxiliary power supply circuit truly enters a low-power shutdown state, and will no longer have additional energy consumption effects on the battery, effectively preventing the battery from over-discharging after shutdown, improving the battery's efficiency and the safety of the product during long-term storage. Taking into account the working characteristics of various components in the circuit and the requirements for battery energy consumption control, the optimization of the auxiliary power supply circuit shutdown process is achieved through fine operation steps, further improving the shutdown logic of the entire battery energy consumption control circuit, and improving the reliability and energy saving of the system.

[0051] Further references Figure 4 , as a response to the above Figure 4In order to realize the method shown in the figure, the present application provides an embodiment of a control device 400 of a battery energy consumption control circuit. Figure 4 The method embodiments shown correspond.

[0052] An embodiment of the present application provides a control device for a battery energy consumption control circuit, and the control device 400 for the battery energy consumption control circuit includes: A first receiving module 410, configured to cause the MCU to send a first preset instruction to the drive unit through the first channel when receiving a shutdown instruction, wherein the first preset instruction is used to instruct the drive unit to cut off a current path to the main power circuit; The sending module 420 is used to send a third preset instruction to the controllable LDO through the third channel after the MCU sends the second preset instruction to the auxiliary power supply circuit through the second channel, wherein the second preset instruction is used to instruct a preset power supply module in the auxiliary power supply circuit to stop outputting voltage, and the third preset instruction is used to instruct the controllable LDO to output a voltage value of 0 to the MCU. When the output voltage value of the controllable LDO to the MCU is 0, the single battery stops outputting voltage to the preset power supply module.

[0053] Optionally, the device further comprises: The second receiving module is used for, during the operation of the system, the MCU receives a first feedback signal of the main power circuit through the first channel, receives a second feedback signal of the auxiliary power supply circuit through the second channel, and receives a third feedback signal of the controllable LDO through the third channel, wherein the first feedback signal, the second feedback signal and the third feedback signal are respectively used to indicate the operating status of the electrical components in the main power circuit, the electrical components in the auxiliary power supply circuit and the controllable LDO.

[0054] Optionally, the second preset instruction includes instructing the output voltage of the preset power supply module to drop below a preset threshold before instructing the preset power supply module in the auxiliary power supply circuit to stop outputting the voltage, the preset threshold is determined based on the minimum operating voltage of the subsequent circuit in the auxiliary power supply circuit, and after the output voltage drops below the preset threshold, after a preset delay time has passed, instructing the preset power supply module to stop outputting the voltage, and the preset delay time is set according to the discharge characteristics of the energy storage element in the auxiliary power supply circuit.

[0055] To solve the above technical problems, the present application also provides an electronic device. Figure 5 , Figure 5 This is a basic structural block diagram of the electronic device of this embodiment. The electronic device 5 includes a memory 51, a processor 52, and a network interface 53 that are interconnected through a system bus. It should be noted that the figure only shows an electronic device 5 with components 51-53, but it should be understood that it is not required to implement all the components shown, and more or fewer components can be implemented instead. Among them, those skilled in the art can understand that the computer device here is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to microprocessors, application specific integrated circuits (Application Specific Integrated Circuit, ASIC), programmable gate arrays (Field-Programmable Gate Array, FPGA), digital processors (Digital Signal Processor, DSP), embedded devices, etc.

[0056] The computer device may be a computing device such as a desktop computer, a notebook, a PDA, a cloud server, etc. The computer device may interact with a user through a keyboard, a mouse, a remote controller, a touch pad, or a voice control device.

[0057] The memory 51 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, hard disk, multimedia card, card-type memory (for example, SD or DX memory, etc.), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, disk, optical disk, etc. In some embodiments, the memory 51 can be an internal storage unit of the electronic device 5, such as a hard disk or memory of the electronic device 5. In other embodiments, the memory 51 can also be an external storage device of the electronic device 5, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 5. Of course, the memory 51 can also include both the internal storage unit of the electronic device 5 and its external storage device. In this embodiment, the memory 51 is generally used to store the operating system and various application software installed on the electronic device 5, such as the program code of the control method of the battery energy consumption control circuit, etc. In addition, the memory 51 can also be used to temporarily store various types of data that have been output or are to be output.

[0058] The processor 52 may be a central processing unit (CPU), a controller, a microcontroller, a microprocessor, or other data processing chips in some embodiments. The processor 52 is generally used to control the overall operation of the electronic device 5. In this embodiment, the processor 52 is used to run the program code stored in the memory 51 or process data, such as running the program code of the control method of the battery energy consumption control circuit.

[0059] The network interface 53 may include a wireless network interface or a wired network interface. The network interface 53 is generally used to establish a communication connection between the electronic device 5 and other electronic devices.

[0060] The present application also provides another embodiment, namely, providing a computer-readable storage medium, wherein the computer-readable storage medium stores a program of the control method of the battery energy consumption control circuit, and the program of the control method of the battery energy consumption control circuit can be executed by at least one processor so that the at least one processor performs the steps of the control method of the battery energy consumption control circuit as described above.

[0061] The present application also provides another implementation, namely, providing a computer program product, wherein the computer program product includes computer instructions, and when the computer instructions are executed by a processor, the steps of the control method of the battery energy consumption control circuit are implemented.

[0062] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware online platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0063] The present application can be used in many general or special computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, etc. The present application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application can also be practiced in distributed computing environments, in which tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media including storage devices.

[0064] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A battery energy consumption control circuit, characterized in that: The control circuit includes: a single battery, a main power circuit, an auxiliary power supply circuit, a controllable low voltage dropout regulator LDO, a driving unit and a microcontroller unit MCU, the single battery is respectively connected to the main power circuit and the auxiliary power supply circuit, and the main power circuit and the auxiliary power supply circuit are both connected to the MCU through the controllable LDO, the output of the driving unit is connected to the main power circuit, the input of the driving unit is connected to the MCU, and a first channel is set between the MCU and the driving unit, a second channel is set between the MCU and the auxiliary power supply circuit, and a third channel is set between the MCU and the controllable LDO.

2. The control circuit according to claim 1, characterized in that: The main power circuit includes a first power switch tube, a transformer and a buffer electrical device. The first power switch tube is connected in a topological structure and is used to convert the DC voltage input by the single battery into an output high-frequency pulse voltage. The transformer is arranged after the first power switch tube, and the high-frequency pulse voltage output by the first power switch tube is output after passing through the primary winding and the secondary winding of the transformer. The buffer electrical device includes a resistor, a capacitor and a diode.

3. The control circuit according to claim 1, characterized in that: The auxiliary power supply circuit includes a second power switch tube, an auxiliary winding, a filter capacitor and a filter diode. The filter capacitor and the filter diode are both arranged before the second power switch tube, and the auxiliary winding is arranged after the second power switch tube.

4. The control circuit according to claim 1, characterized in that: When the MCU receives a preset signal for instructing shutdown, the drive unit, the auxiliary power supply circuit and the controllable LDO are controlled in sequence through the first channel, the second channel and the third channel to respond to the preset signal in a timing sequence.

5. A control method based on the battery energy consumption control circuit according to any one of claims 1 to 4, characterized in that: The control method comprises: When receiving a shutdown instruction, the MCU sends a first preset instruction to the drive unit through the first channel, where the first preset instruction is used to instruct the drive unit to cut off the current path with the main power circuit; After the MCU sends the second preset instruction to the auxiliary power supply circuit through the second channel, the third preset instruction is sent to the controllable LDO through the third channel, the second preset instruction is used to instruct the preset power supply module in the auxiliary power supply circuit to stop outputting voltage, and the third preset instruction is used to instruct the controllable LDO to output a voltage value of 0 to the MCU. When the output voltage value of the controllable LDO to the MCU is 0, the single battery stops outputting voltage to the preset power supply module.

6. The method according to claim 5, characterized in that The method further comprises: During system operation, the MCU receives a first feedback signal of the main power circuit through the first channel, receives a second feedback signal of the auxiliary power supply circuit through the second channel, and receives a third feedback signal of the controllable LDO through the third channel. The first feedback signal, the second feedback signal, and the third feedback signal are respectively used to indicate the operating status of the electrical components in the main power circuit, the electrical components in the auxiliary power supply circuit, and the controllable LDO.

7. The method according to claim 5, characterized in that The second preset instruction includes instructing the output voltage of the preset power supply module to drop below a preset threshold before instructing the preset power supply module in the auxiliary power supply circuit to stop outputting the voltage, the preset threshold is determined based on the minimum operating voltage of the subsequent circuit in the auxiliary power supply circuit, and after the output voltage drops below the preset threshold, after a preset delay time has passed, instructing the preset power supply module to stop outputting the voltage, and the preset delay time is set according to the discharge characteristics of the energy storage element in the auxiliary power supply circuit.

8. A control device based on the battery energy consumption control circuit according to any one of claims 1 to 4, characterized in that: The control device comprises: a first receiving module, configured to cause the MCU to send a first preset instruction to the drive unit through the first channel when receiving a shutdown instruction, wherein the first preset instruction is used to instruct the drive unit to cut off a current path with the main power circuit; a sending module, configured to send a third preset instruction to the controllable LDO through the third channel after the MCU sends the second preset instruction to the auxiliary power supply circuit through the second channel, wherein the second preset instruction is used to instruct a preset power supply module in the auxiliary power supply circuit to stop outputting voltage, and the third preset instruction is used to instruct the controllable LDO to output a voltage value of 0 to the MCU, and when the output voltage value of the controllable LDO to the MCU is 0, the single battery stops outputting voltage to the preset power supply module.

9. The device according to claim 8, characterized in that The device also includes: The second receiving module is used for, during the operation of the system, the MCU receives a first feedback signal of the main power circuit through the first channel, receives a second feedback signal of the auxiliary power supply circuit through the second channel, and receives a third feedback signal of the controllable LDO through the third channel, wherein the first feedback signal, the second feedback signal and the third feedback signal are respectively used to indicate the operating status of the electrical components in the main power circuit, the electrical components in the auxiliary power supply circuit and the controllable LDO.

10. The device according to claim 8, characterized in that The second preset instruction includes instructing the output voltage of the preset power supply module to drop below a preset threshold before instructing the preset power supply module in the auxiliary power supply circuit to stop outputting the voltage, the preset threshold is determined based on the minimum operating voltage of the subsequent circuit in the auxiliary power supply circuit, and after the output voltage drops below the preset threshold, after a preset delay time has passed, instructing the preset power supply module to stop outputting the voltage, and the preset delay time is set according to the discharge characteristics of the energy storage element in the auxiliary power supply circuit.

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