Energy storage circuit of air conditioner control device, control method and device and storage medium

Abstract

The invention discloses an energy storage circuit of an air conditioner control device, a control method and device and a storage medium. The control device of the air conditioner comprises a controller and a power supply circuit, the power supply circuit is used for converting an external power supply and then supplying power to the controller, the energy storage circuit is arranged between the output end of the power supply circuit and the power supply end of the controller, and the energy storage circuit comprises a super capacitor switching circuit and a charging circuit. The super capacitor switching circuit comprises a plurality of super capacitors and a switching device. The switching device comprises a switching circuit arranged between two adjacent super-capacitors and used for controlling the multiple super-capacitors to be switched between a first connection state and a second connection state, the first connection state is that the multiple super-capacitors are connected in parallel, and the second connection state is that the multiple super-capacitors are connected in series. The output end of the charging circuit is connected with the input end of the super capacitor switching circuit, and the charging circuit is used for charging the super capacitors. Therefore, the charging rate of the super capacitor is improved.

Description

Technical Field

[0001] The present application relates to the field of control technology, and in particular to an energy storage circuit and a control method, device and storage medium of an air conditioner control device. Background Art

[0002] At present, supercapacitors, as a new type of energy storage device, have been widely used in many fields due to their high power density and long cycle life.

[0003] However, in the prior art, when charging a supercapacitor, a switching power supply is generally used to charge the supercapacitor. However, due to the limited output current of the switching power supply, the charging efficiency of the supercapacitor is slow. Summary of the invention

[0004] In view of this, the embodiments of the present application provide an energy storage circuit and a control method, device and storage medium of an air conditioner control device, aiming to improve the charging efficiency of a supercapacitor.

[0005] The technical solution of the embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides an energy storage circuit of an air conditioner control device, the air conditioner control device comprising: a controller and a power supply circuit, the power supply circuit being used to convert and process an external power supply to supply power to the controller, the energy storage circuit being arranged between an output end of the power supply circuit and a power supply end of the controller, the energy storage circuit comprising:

[0007] A supercapacitor switching circuit, the supercapacitor switching circuit comprising: a plurality of supercapacitors and a switching device;

[0008] The switching device includes a switching circuit disposed between two adjacent supercapacitors, and is used to control the multiple supercapacitors to switch between a first connection state and a second connection state, wherein the first connection state is that the multiple supercapacitors are connected in parallel, and the second connection state is that the multiple supercapacitors are connected in series;

[0009] A charging circuit, wherein the output end of the charging circuit is connected to the input end of the supercapacitor switching circuit, and is used to charge each of the supercapacitors.

[0010] In some embodiments, the energy storage circuit further comprises:

[0011] A discharge circuit, wherein the input end of the discharge circuit is connected to the output end of the supercapacitor switching circuit, and is used to discharge the output voltage of the supercapacitor switching circuit after boosting it.

[0012] In some embodiments, the energy storage circuit further comprises:

[0013] A current detection control circuit, wherein the output end of the current detection circuit is connected to the input end of the charging circuit, and is used to detect the current value of the circuit, and based on the current value, generate charging indication information, and the charging indication information is used to control the conduction of the charging circuit.

[0014] In some embodiments, the switching circuit comprises:

[0015] A switch device, the switch device comprising:

[0016] A first static contact and a second static contact, wherein the first static contact is connected to a first end of a first super capacitor, and the second static contact is connected to a second end of the first super capacitor;

[0017] A first moving contact, a second moving contact, a third moving contact and a fourth moving contact, wherein the first moving contact is disconnected from the second super capacitor; the second moving contact and the third moving contact are connected to the first end of the second super capacitor, and the fourth moving contact is connected to the second end of the second super capacitor;

[0018] Among them, the second supercapacitor is arranged adjacent to the first supercapacitor, the first connection state is a connection state in which the first static contact is connected to the second moving contact, and the second static contact is connected to the fourth moving contact; the second connection state is a connection state in which the first static contact is connected to the first moving contact, and the second static contact is connected to the third moving contact.

[0019] In a second aspect, an embodiment of the present application provides a control method, which is applied to the energy storage circuit described in the first aspect above, and the method includes:

[0020] Get charging instruction information;

[0021] generating a control signal based on the charging indication information and a first set threshold;

[0022] The control signal is a first control signal for controlling the switching device to switch to the second connection state or a second control signal for controlling the switching device to switch to the first connection state.

[0023] In some embodiments, the generating a control signal based on the charging indication information and the first set threshold value includes:

[0024] Based on the charging indication information, generate the first control signal, and obtain a first voltage value, where the first voltage value is an output voltage value of the supercapacitor switching circuit;

[0025] Determining that the first voltage value is greater than or equal to a first set threshold value, generating the second control signal;

[0026] The first set threshold is the maximum chargeable voltage value of each supercapacitor in the supercapacitor switching circuit.

[0027] In some embodiments, the method further comprises:

[0028] Obtaining discharge indication information;

[0029] Based on the discharge indication information, obtaining a second voltage value, where the second voltage value is an output voltage value of the supercapacitor switching circuit;

[0030] determining whether the second voltage value is greater than or equal to a second set threshold, and if so, generating the first control signal;

[0031] If not, generating the second control signal;

[0032] Among them, the second set threshold is the voltage value of the supercapacitor switching circuit corresponding to the maximum duty cycle of the discharge circuit.

[0033] In a third aspect, an embodiment of the present application provides a control device, which is applied to the supercapacitor control circuit described in the first aspect above, and the control device includes:

[0034] An acquisition module, used to acquire an operating parameter value of the energy storage circuit in an operating mode, wherein the operating mode includes: a charging mode;

[0035] A generation mode, for generating a control signal based on the operating parameter value in the charging mode and a first set threshold value;

[0036] The control signal is a first control signal for controlling the switching device to switch to the second connection state or a second control signal for controlling the switching device to switch to the first connection state.

[0037] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising: the energy storage circuit as described in the first aspect above, the electronic device further comprising: a processor and a memory for storing a computer program that can be run on the processor, wherein:

[0038] The processor is used to execute the steps of the method described in the first aspect when running a computer program.

[0039] In a fifth aspect, an embodiment of the present application provides a computer storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in the first aspect are implemented.

[0040] The technical solution provided by the embodiment of the present application provides an energy storage circuit of an air conditioner control device, the air conditioner control device includes: a controller and a power supply circuit, the power supply circuit is used to convert and process the external power supply to supply power to the controller, the energy storage circuit is arranged between the output end of the power supply circuit and the power supply end of the controller, the energy storage circuit includes: a supercapacitor switching circuit and a charging circuit, the supercapacitor switching circuit includes: multiple supercapacitors and a switching device; wherein the switching device includes a switching circuit arranged between two adjacent supercapacitors, which is used to control multiple supercapacitors to switch between a first connection state and a second connection state, the first connection state is multiple supercapacitors connected in parallel, and the second connection state is multiple supercapacitors connected in series; the output end of the charging circuit is connected to the input end of the supercapacitor switching circuit, which is used to charge each supercapacitor. In this way, by controlling multiple supercapacitors to switch between the first connection state and the second connection state through the switching device, the charging current of the supercapacitor is increased, the charging speed of the supercapacitor is accelerated, and thus the charging rate of the supercapacitor is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of an energy storage circuit of an air conditioner control device provided in one embodiment of the present application;

[0042] Figure 2 A schematic diagram of the structure of a switching circuit provided in an embodiment of the present application;

[0043] Figure 3 A flow chart of a control method provided in one embodiment of the present application;

[0044] Figure 4 A schematic diagram of the structure of a supercapacitor circuit provided in one embodiment of the present application;

[0045] Figure 5 A schematic diagram of the structure of a supercapacitor switching circuit provided for an application example of the present application;

[0046] Figure 6 A schematic diagram of the structure of a BUCK charging circuit provided for an application example of this application;

[0047] Figure 7 A schematic diagram of a BOOST discharge circuit provided for an application example of this application;

[0048] Figure 8 A structural schematic diagram of a current detection circuit provided for an application example of the present application;

[0049] Fig. 9 A schematic diagram of the process of charging and discharging a supercapacitor in an application example of this application;

[0050] Fig.10A schematic diagram of the structure of a control device provided in an embodiment of the present application;

[0051] Fig.11 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0054] The embodiment of the present application provides an energy storage circuit of an air conditioner control device, such as Figure 1 As shown, the control device of the air conditioner includes: a controller and a power supply circuit, the power supply circuit is used to convert and process the external power supply and supply power to the controller, the energy storage circuit is arranged between the output end of the power supply circuit and the power supply end of the controller, the energy storage circuit includes: a super capacitor switching circuit and a charging circuit, and the super capacitor switching circuit includes: multiple super capacitors and a switching device.

[0055] It is understandable that as an energy storage element, supercapacitors have the characteristics of large capacity and low withstand voltage. Generally speaking, in order to improve the energy storage capacity of supercapacitors, multiple supercapacitors are used at the same time.

[0056] It is understandable that the switching device includes a switching circuit arranged between two adjacent supercapacitors, which is used to control the switching of multiple supercapacitors between a first connection state and a second connection state, wherein the first connection state is a plurality of supercapacitors connected in parallel, and the second connection state is a plurality of supercapacitors connected in series. Exemplarily, when multiple supercapacitors are in a first connection state in which multiple supercapacitors are connected in parallel, the current of each of the multiple supercapacitors is equal. If the total current is I and the number of the multiple supercapacitors is n, then in the parallel connection state, the current value of each supercapacitor is I / n. Generally speaking, in order to ensure the stability of the circuit, multiple supercapacitors are in a parallel connection state.

[0057] Exemplarily, when the multiple supercapacitors are in the second connection state of being connected in series, the current of each of the multiple supercapacitors is equal, and if the total current is I and the number of the multiple supercapacitors is n, then in the series connection state, the current value of each supercapacitor is I. In the series connection state, the current of each supercapacitor can be increased.

[0058] It is understandable that the output end of the charging circuit is connected to the input end of the supercapacitor switching circuit for charging each supercapacitor. The charging circuit includes a BUCK step-down circuit, which is a step-down DC-DC converter that achieves voltage conversion and constant current output by switching current magnetic flux lines. It controls the output voltage by controlling the switching time of the PWM switch tube, thereby achieving the purpose of controlling the output current.

[0059] In this way, by controlling multiple supercapacitors to switch between the first connection state and the second connection state through the switching device, the charging current of the supercapacitor can be increased (for example, switching from the first connection state to the second connection state), the charging speed of the supercapacitor can be accelerated, and thus the charging rate of the supercapacitor can be improved.

[0060] In some embodiments, reference Figure 1 , the energy storage circuit also includes:

[0061] The discharge circuit has an input end connected to the output end of the supercapacitor switching circuit and is used to discharge the output voltage of the supercapacitor switching circuit after boosting it.

[0062] It is understandable that the discharge circuit is used to discharge the output voltage of the supercapacitor switching circuit after boosting it. The discharge circuit includes a boost circuit, and the boost circuit here can be a Boost boost circuit. The Boost circuit is a switching DC boost circuit that can make the output voltage higher than the input voltage. Generally speaking, the target voltage required by the power supply device is higher than the capacitor voltage of each supercapacitor. Therefore, the output end of the supercapacitor switching circuit is connected to the input end of the discharge circuit. After each supercapacitor is discharged, the discharge circuit boosts the discharge voltage of each supercapacitor and outputs it to the power supply device.

[0063] In some embodiments, the energy storage circuit further comprises:

[0064] The current detection control circuit has an output end connected to an input end of the charging circuit, and is used to detect the current value of the circuit and generate charging indication information based on the current value. The charging indication information is used to control the conduction of the charging circuit.

[0065] It can be understood that the current detection control circuit is used to detect the current value of the circuit. When the circuit is powered off, the current value is compared with the set current threshold. If it is less than or equal to the current threshold, charging indication information is generated to control the charging circuit to be turned on. At this time, the charging circuit charges each supercapacitor.

[0066] In this way, the charging circuit is controlled to be turned on through the current detection control circuit, that is, the current value is used to ensure whether the charging circuit is turned on at this time, thereby improving the charging efficiency of the charging circuit and ensuring the stability of the circuit.

[0067] In some embodiments, Figure 2 is a schematic diagram of the switching circuit. Figure 2 As shown, the switching circuit includes:

[0068] The switch device comprises: a first static contact 1 and a second static contact 2, a first moving contact 3, a second moving contact 4, a third moving contact 5 and a fourth moving contact 6.

[0069] It is understandable that the switching devices include but are not limited to relays, IGBTs (Insulated Gate Bipolar Transistor), MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistor), which can also be called MOS tubes, etc.

[0070] It is understandable that if Figure 2 As shown, R1 is a switch device, and the switching circuit is located between the first capacitor E1 and the second capacitor E2, wherein the second super capacitor E2 is arranged adjacent to the first super capacitor E1.

[0071] It can be understood that the switching device R1 includes: a first static contact 1 and a second static contact 2, the first static contact 1 is connected to the first end of the first super capacitor E1, and the second static contact 2 is connected to the second end of the first super capacitor E1; the first moving contact 3 is disconnected from the second super capacitor E2; the second moving contact 4 and the third moving contact 5 are connected to the first end of the second super capacitor E2, and the fourth moving contact 6 is connected to the second end of the second super capacitor E2.

[0072] It can be understood that the first connection state is the connection state in which the first static contact 1 is connected to the second moving contact 4, and the second static contact 2 is connected to the fourth moving contact 6; the second connection state is the connection state in which the first static contact 1 is connected to the first moving contact 3, and the second static contact 2 is connected to the third moving contact 5.

[0073] In this way, by controlling the connection of the first static contact, the second static contact, the third moving contact, the fourth moving contact, the fifth moving contact and the sixth moving contact of the switching device, flexible switching of multiple supercapacitors between the first connection state and the second connection state is achieved.

[0074] The present application also provides a control method, such as Figure 3 As shown, the method comprises the following steps:

[0075] Step 310: Obtain charging instruction information.

[0076] Here, the control device can obtain the charging indication information generated by the current detection control circuit. Exemplarily, the current detection control circuit detects the current value of the circuit and compares the current value with the current threshold. When the current value is small, that is, less than or equal to the current threshold, it will generate charging indication information, which is used to control the charging circuit to be turned on. At this time, the charging circuit charges each supercapacitor in the energy storage circuit.

[0077] Step 320: Generate a control signal based on the charging indication information and the first set threshold;

[0078] The control signal is a first control signal for controlling the switching device to switch to the second connection state or a second control signal for controlling the switching device to switch to the first connection state.

[0079] Here, the control signal may include a high level signal and a low level signal. Exemplarily, the high level signal is a first control signal for controlling the switching device to switch to the second connection state, and correspondingly, the low level signal is a second control signal for controlling the switching device to switch to the first connection state.

[0080] In this way, based on the charging indication information and the first set threshold, a control signal is generated, which is a first control signal for controlling the switching device to switch to the second connection state, or a second control signal for controlling the switching device to switch to the first connection state, thereby controlling the switching device to switch between the first connection state and the second connection state, thereby controlling the charging current of multiple supercapacitors and improving the charging efficiency.

[0081] In some embodiments, generating a control signal based on the charging indication information and the first set threshold includes:

[0082] Based on the charging indication information, a first control signal is generated, and a first voltage value is obtained, where the first voltage value is an output voltage value of the supercapacitor switching circuit;

[0083] Determining that the first voltage value is greater than or equal to a first set threshold value, generating a second control signal;

[0084] The first set threshold is the maximum voltage value of each supercapacitor in the supercapacitor switching circuit that can be charged.

[0085] Here, after obtaining the charging indication information, the control device generates the first control information and controls the switching device to switch to the second connection state, i.e., the series state. At this time, the current value of each supercapacitor is increased, thereby accelerating the charging speed of the supercapacitor and improving the charging rate of the supercapacitor.

[0086] Here, after obtaining the charging indication information, a first voltage value is obtained, the first voltage value is the output voltage value of the supercapacitor switching circuit, and the first set threshold value is the maximum voltage value at which each supercapacitor in the supercapacitor switching circuit can be charged. When it is determined that the first voltage value is greater than or equal to the first set threshold value, it indicates that each supercapacitor has been charged, and a second control signal is generated to control the switching device to switch to the first connection state, i.e., the parallel state, thereby ensuring the stability of the energy storage circuit.

[0087] In some embodiments, the method further comprises:

[0088] Obtaining discharge indication information;

[0089] Based on the discharge indication information, a second voltage value is acquired, where the second voltage value is an output voltage value of the supercapacitor switching circuit;

[0090] determining whether the second voltage value is greater than or equal to a second set threshold, and if so, generating a first control signal;

[0091] If not, generating a second control signal;

[0092] The second set threshold is the voltage value of the supercapacitor switching circuit corresponding to the maximum duty cycle of the discharge circuit.

[0093] Here, the control device can also obtain discharge indication information, where the discharge indication information is used to instruct each supercapacitor to discharge and output to the power-consuming device after being boosted by the discharge circuit. Generally speaking, the target voltage required by the power supply device is higher than the capacitance voltage of each supercapacitor. Therefore, the supercapacitor switching circuit is connected to the discharge circuit, and after each supercapacitor is discharged, the discharge circuit boosts the discharge voltage of each supercapacitor and outputs it to the power supply device.

[0094] Here, the discharge circuit can be boosted based on the BOOST boost circuit, but the BOOST circuit is affected by its duty cycle. When the duty cycle of the boost circuit reaches its limit, it cannot continue to output stably to the power-consuming device. However, at this time, there is still a large amount of electricity remaining in the supercapacitor, and the supercapacitor voltage utilization rate is low.

[0095] Here, based on the discharge indication information, a second voltage value is obtained, which is the output voltage value of the supercapacitor switching circuit. The second set threshold is the voltage value of the supercapacitor switching circuit corresponding to the maximum duty cycle of the discharge circuit. It is determined whether the second voltage value is greater than or equal to the second set threshold. If so, it indicates that the duty cycle of the discharge circuit has reached the limit at this time, and the current of each supercapacitor has also reached the limit, then a first control signal is generated, and the first control signal is used to control the switching device to switch to the second connection state, that is, the connection state of each supercapacitor is in series at this time. At this time, the voltage of each supercapacitor is higher than the original voltage, so that the electrical device continues to be powered by the increased voltage, thereby further improving the voltage utilization rate of the supercapacitor.

[0096] Here, it is determined whether the second voltage value is greater than or equal to the second set threshold value. If not, it indicates that the discharge circuit can normally supply power to the electrical device at this time, and the voltage utilization rate is high, that is, there is no need to further increase the voltage of each supercapacitor at this time, and a second control signal is generated. The second control signal is used to control the switching device to switch to the first connection state, that is, the parallel state, to ensure the stability of the circuit.

[0097] Below, the embodiment of the present application is described in detail with reference to an application example.

[0098] At present, supercapacitors have the characteristics of large capacity and low withstand voltage. Generally, multiple supercapacitors are connected in parallel to increase capacity and energy storage capacity, but their output voltage does not meet the power supply requirements of normal circuits. Therefore, when using supercapacitors as energy storage devices, a BUCK step-down circuit is required when charging, and a boost circuit is used when discharging.

[0099] However, when charging a supercapacitor, a switching power supply is generally used as the power supply device. The switching power supply has limited output current capability, slow charging speed, and low BUCK circuit duty cycle and conversion efficiency. When charging a supercapacitor, since the target voltage is much higher than the capacitor voltage, when the boost circuit duty cycle reaches the limit, it cannot continue to output stably. At this time, there is still a large amount of electricity left in the capacitor, and the capacitor voltage utilization rate is low.

[0100] Based on this, this application example provides a supercapacitor circuit (i.e., the energy storage circuit of the aforementioned air conditioner control device) and a supercapacitor charging and discharging control method. Figure 4 , Figure 4 is a schematic diagram of the structure of the supercapacitor circuit, wherein the supercapacitor circuit is applied to the control device of the air conditioner. Figure 4In the embodiment, the control device of the air conditioner includes a controller, a controller power circuit (i.e., a power circuit), a power detection circuit, an energy storage circuit (i.e., a super capacitor circuit), a valve body control circuit, and a valve body (valve body 1 and valve body 2). The controller power circuit is used to convert and process the external power supply and supply power to the controller, and the energy storage circuit (i.e., a super capacitor circuit) is arranged between the output end of the power circuit and the power end of the controller.

[0101] Exemplarily, the controller power supply circuit is used to supply power to the controller, including: a power supply, a rectifier circuit, a filter circuit, a switching power supply circuit and a controller power supply voltage stabilizing circuit. The controller power supply voltage stabilizing circuit is used to stabilize the input voltage and output it to the controller, and the output voltage Vcc of the controller power supply voltage stabilizing circuit is 5V & 12V. When powered on, the switching power supply circuit supplies power to the control chip through the controller power supply voltage stabilizing circuit, and the control chip can send a valve body control signal to valve body 1 and / or valve body 2 through the valve body control circuit to realize the corresponding valve body operation control of valve body 1 and / or 2.

[0102] In this application example, the supercapacitor circuit includes: a supercapacitor switching circuit, a BUCK charging circuit, a BOOST discharging circuit and a current detection control circuit. Figure 5 It is a structural diagram of the supercapacitor switching circuit. Figure 5 As shown, the supercapacitor switching circuit includes: 5 supercapacitors, which respectively include: a first supercapacitor E1, a second supercapacitor E2, a third supercapacitor E3, a fourth supercapacitor E4, a fourth supercapacitor E5 and a switching device, including a switching circuit arranged between two adjacent supercapacitors. In this application example, it includes a switching circuit 1 between E1 and E2, a switching circuit 2 between E2 and E3, a switching circuit 3 between E3 and E4, and a switching circuit 4 between E4 and E5.

[0103] exist Figure 5 In the embodiment, each switching circuit includes relays RY1, RY2, RY3 and RY4. For relay RY1, it includes a first static contact 1, a second static contact 2, a first moving contact 3, a second moving contact 4, a third moving contact 5 and a fourth moving contact 6.

[0104] The relay RY1 also includes a SERIAL / PARALLEL control signal receiving port, which includes a first terminal 7 and a second terminal 8, wherein the first terminal 7 is used to receive a control signal, and the second terminal 8 is connected to a power source VCC.

[0105] Here, taking the switching circuit 1 between E1 and E2 as an example, the first static contact 1 is connected to the first end of the first supercapacitor E1, and the second static contact 2 is connected to the second end of the first supercapacitor E1; the second moving contact 4 and the third moving contact 5 are connected to the first end of the second supercapacitor E2, and the fourth moving contact 6 is connected to the second end of the second supercapacitor E2;

[0106] Among them, the second supercapacitor E2 is arranged adjacent to the first supercapacitor E1. Taking the switching circuit 1 between E1 and E2 as an example, when SERIAL / PARALLEL is pulled high, SERIAL / PARALLEL is at a high level, and can be controlled to switch to a series state (that is, the first connection state mentioned above). The series state is a connection state in which the first static contact 1 is connected to the second moving contact 3, and the second static contact 2 is connected to the fourth moving contact 6; at this time, the current of each supercapacitor is increased, thereby accelerating the charging speed of the supercapacitor, thereby improving the charging rate of the supercapacitor.

[0107] When SERIAL / PARALLEL is pulled low, SERIAL / PARALLEL is at a low level, and can be controlled to switch to a parallel state (i.e., the aforementioned second connection state). The parallel state is a connection state in which the first static contact 1 is connected to the first moving contact 3, and the second static contact 2 is connected to the third moving contact 5.

[0108] Here, the output end of the supercapacitor also includes SuperCap-V-dec (voltage detection port) and SuperCap-I-dec (current detection port).

[0109] Figure 6 FIG. 1 is a schematic diagram of the structure of a BUCK charging circuit (i.e., the aforementioned charging circuit). The output end of the charging circuit is connected to the input end of the supercapacitor switching circuit to charge each supercapacitor. Figure 5 As shown, the BUCK charging circuit includes: a buck chip IC14, IC14 includes 9 pins, which include: a first pin BOOT (input / output pin); a second pin VIN (power input voltage pin); a third pin EN (enable pin), generally a high level makes the buck chip work. Figure 5 In the embodiment, the EN pin is connected to the BUCK-en terminal, based on which the high and low levels of the current detection circuit can be received. If a high level is received, the buck chip starts to work, and the BUCK charging circuit starts to charge each supercapacitor. The high level here is the aforementioned charging indication information.

[0110] The fourth pin RT / SYNC (clock pulse pin) can be used to adjust the frequency of the BUCK charging circuit; the fifth pin FB (output voltage feedback pin); the sixth pin PGOOD (open drain output pin), if the output voltage exceeds the adjustment range (the output voltage is not within the range of plus or minus 10% of the required output voltage) or when a fault is detected, the pin is pulled low, and the pin outputs a high level when the output voltage is normal;

[0111] The seventh pin is GND (ground pin); the eighth pin is SW (switch control pin), the SW pin is used to control the opening and closing of the subsequent circuit, thereby controlling the working state of the BUCK charging circuit; the ninth pin is PAD (pad pin), the PAD here generally refers to a large metal area at the bottom of the chip, which is used for heat dissipation, electromagnetic shielding, etc., and generally needs to be grounded.

[0112] This application example also provides a BOOST discharge circuit. Figure 7 It is a structural diagram of a BOOST discharge circuit. The input end of the BOOST discharge circuit is connected to the output end of the supercapacitor switching circuit, and is used to discharge the output voltage of the supercapacitor switching circuit after boosting it.

[0113] like Figure 7 As shown, the BOOST discharge circuit includes a boost chip IC23, and IC23 is provided with 13 pins, including: the first pin VDC (forced power-on pin); the second pin VIN (power input voltage pin); the third pin COMP (output pin of the internal error amplifier); the fourth pin SS (soft start programming pin); the fifth pin FSW (switching pin), which can set the switching frequency of the boost chip; the sixth pin FAULT; the seventh pin FB (output voltage feedback pin); the eighth pin OVP; the ninth pin ISW; the tenth pin GND (ground pin);

[0114] The eleventh pin DRV is connected to the gate drive terminal of the external PMOS tube, which can control the on and off of the PMOS. The sampling point is connected to the S level of the MOS tube and is not directly grounded; the twelfth pin EN (enable pin), where the EN pin is connected to the Battery-Boost-Control terminal, based on which a high-level signal or a low-level signal is received. When the level is high, the chip works, and the BOOST discharge circuit boosts the voltage and discharges to the outside, that is, BOOST discharge is performed. When the level is low, the chip is shut down, and the BOOST discharge circuit does not perform BOOST discharge.

[0115] The thirteenth pin is PAD (pad pin). The PAD here generally refers to a large metal area at the bottom of the chip, which is used for heat dissipation, electromagnetic shielding, etc. and generally needs to be grounded.

[0116] Current detection control circuit such as Figure 8 As shown, the output end (BUCK en) of the current detection control circuit is connected to the output end (EN enable pin) of the BUCK charging circuit, which is used to detect the current value of the circuit and generate charging indication information (i.e., a high level) based on the current value. The charging indication information is used to control the conduction of the charging circuit.

[0117] The current detection circuit includes a detection chip IC26, which can detect both current and voltage. The detection chip includes: a first pin 1 (OUT1), which is used to output the current detection result; a second pin 2 (-IN1), which is used by the user to obtain the input current of the circuit; a third pin 3 (+IN1), which is used to obtain the input current of the circuit; and a fourth pin is a ground pin. When the output current detection result of OUT1 is greater than 0.5A, BUCK en is pulled down, and a low-level signal is generated at this time, indicating that the BUCK charging circuit is not required to perform constant current charging on each supercapacitor at this time. When the input current is less than or equal to 0.5A, BUCK en is pulled up, and a high-level signal, i.e., charging indication information, is generated, which is used to control the conduction of the BUCK charging circuit, and a high level is output based on the EN enable pin in the BUCK charging circuit, thereby controlling the conduction of the BUCK charging circuit.

[0118] The detection chip IC26 can also be used to detect voltage, so as to control the opening or closing of the external power supply. The detection chip IC26 also includes: a fifth pin (+IN2) for obtaining the input voltage of the circuit; a sixth pin (-IN2) for obtaining the input voltage of the circuit; and a seventh pin (OUT1) for outputting the voltage detection result. If the voltage detection result is less than 10.3V, the high terminal 12V-POWER-OFF is pulled up to control the conduction with the external power supply. If the voltage detection result is greater than or equal to 10.3V, the terminal 12V-POWER-OFF is pulled down to control the disconnection with the external power supply.

[0119] This application example provides a supercapacitor charging and discharging control method. Fig. 9 , the specific steps include:

[0120] Step 901: Power on the electronic control.

[0121] Step 902: Standby.

[0122] Step 903: Supercapacitor power detection.

[0123] The current detection control circuit detects the current value of the circuit and compares the current value with the set current threshold. If the current value is less than or equal to the set current threshold, a charging indication message is generated. The charging indication message is sent to the BUCK-en terminal of the BUCK charging circuit based on the BUCK en terminal in the current detection circuit. The charging indication message is used to control the conduction of the charging circuit. If the current value is greater than the set current threshold, no charging indication message is generated. The set current threshold here can be 0.5A.

[0124] Step 904: Determine whether a charging instruction is received.

[0125] If yes, execute step 905, if no, execute step 906.

[0126] Step 905: Switch the supercapacitors to a series connection state.

[0127] The switching power supply outputs VCC (+12V) voltage, which is stepped down by the BUCK to charge the supercapacitors E1-E5 with a constant current I. Since the output current capacity of the switching power supply is limited, if the five capacitors are connected in parallel, the charging speed will be slow, and the charging current of each capacitor is 1 / 5*I.

[0128] If it is determined that the charging indication information is obtained, a first control signal is generated based on the charging indication information, and the first control signal is used to control the switching device to switch to the first control signal of the series state. Specifically, when the switching device receives the first control signal, the SERIAL / PARALLEL signal is pulled high (RY1-RY4 is disconnected), and the five capacitors are in a series state, and the charging current of each capacitor is I, and the charging time is 1 / 5 of the original, thereby improving the charging speed and the charging efficiency.

[0129] After the switching is completed, step 907 is executed.

[0130] Step 906: Determine whether a discharge instruction is received.

[0131] If it is determined that the current detection circuit does not generate charging instruction information, it is determined whether a discharging instruction is received.

[0132] If yes, execute step 908, if no, execute step 902.

[0133] Step 907: BUCK constant current charging.

[0134] When the control switching device switches to the series state, multiple supercapacitors are charged with BUCK constant current, and a first voltage value is obtained in real time based on SuperCap-V-dec. The first voltage value is the output voltage value of the supercapacitor switching circuit, and step 909 is executed.

[0135] Step 908: Whether the supercapacitor voltage reaches a second threshold.

[0136] After determining that the discharge instruction has been obtained, it is determined whether the capacitor voltage (i.e., the aforementioned second voltage value) reaches the second set threshold value. The second set threshold value is the voltage value of the supercapacitor switching circuit corresponding to when the duty cycle of the discharge circuit is maximum. If so, execute step 910, if not, execute step 911.

[0137] Step 909: Determine whether to continue charging.

[0138] If it is determined that the first voltage value is greater than or equal to the first set threshold, a second control signal is generated, and the first voltage value is the output voltage value of the supercapacitor switching circuit. If it is determined that the first voltage value is greater than or equal to the first set threshold, and the first set threshold is the maximum voltage value that can be charged for each supercapacitor in the supercapacitor switching circuit, then step 912 is executed.

[0139] Step 910: Switch to the supercapacitor series connection state.

[0140] When BOOST discharges, the SERIAL / PARALLEL signal is pulled low (RY1-RY4 are all closed), and the five capacitors are in parallel.

[0141] During the discharge process, the capacitor voltage is reduced to the maximum duty cycle of the BOOST circuit, that is, the boost circuit power supply input voltage value is the minimum. After determining whether the second voltage value is greater than or equal to the second set threshold, a first control signal is generated to switch to the series state (SERIAL / PARALLEL signal is pulled high). At this time, the voltage Vcap+ is increased to 5 times the original to continue to supply power to the BOOST circuit, thereby improving the capacitor voltage utilization rate. After the execution is completed, enter step 913.

[0142] Step 911: Switch to supercapacitor parallel connection state

[0143] If not, a second control signal is generated to control the switching device to switch to a parallel state (SERIAL / PARALLEL signal is pulled low).

[0144] After the execution is completed, go to step 913.

[0145] Step 912: Charging is completed, and the supercapacitors are switched to parallel connection.

[0146] If it is determined that the first voltage value is greater than or equal to the first set threshold value, it indicates that the charging of each supercapacitor is complete, and a second control signal is generated to control the switching device to switch to a parallel state (SERIAL / PARALLEL signal is pulled low).

[0147] Step 913: BOOST discharges.

[0148] Step 914: Whether to continue discharging.

[0149] Here, whether to continue discharging can be determined based on the electrical device and the current circuit state, and indication information for stopping discharging can be generated. If the control device obtains indication information for stopping discharging, then if it is no, that is, it is determined not to continue discharging, then step 902 is executed; if it does not receive indication information for stopping discharging, then if it is yes, then step 908 is continued.

[0150] The technical solution provided in this application example can improve the voltage utilization efficiency of the supercapacitor and speed up the charging speed by changing the series and parallel states of multiple capacitors through logical control of switching devices (such as relays, IGBTs, MOS tubes, etc.).

[0151] like Fig.10 As shown, the control device 1000 includes: an acquisition module 1010 and a generation module 1020, the acquisition module 1010 is used to acquire charging indication information; the generation module 1020 is used to generate a control signal based on the charging indication information and a first set threshold; wherein the control signal is a first control signal for controlling the switching device to switch to the second connection state or a second control signal for controlling the switching device to switch to the first connection state.

[0152] In some embodiments, the generation module 1020 is also used to generate a first control signal based on the charging indication information and obtain a first voltage value, where the first voltage value is the output voltage value of the supercapacitor switching circuit; the control device also includes a determination module 1030, and the determination module 1030 is also used to determine that the first voltage value is greater than or equal to a first set threshold value, and then generate a second control signal; wherein the first set threshold value is the maximum voltage value that can be charged for each supercapacitor in the supercapacitor switching circuit.

[0153] In some embodiments, the acquisition module 1010 is also used to obtain discharge indication information; based on the discharge indication information, a second voltage value is obtained, and the second voltage value is the output voltage value of the supercapacitor switching circuit; the determination module 1030 is also used to determine whether the second voltage value is greater than or equal to a second set threshold value, and if so, a first control signal is generated; if not, a second control signal is generated; wherein the second set threshold value is the voltage value of the supercapacitor switching circuit corresponding to when the duty cycle of the discharge circuit is maximum.

[0154] In actual application, the acquisition module 1010, the generation module 1020 and the determination module 1030 can be implemented by a processor in the control device. Of course, the processor needs to run the computer program in the memory to implement its functions.

[0155] It should be noted that: when the control device provided in the above embodiment performs control, only the division of the above program modules is used as an example. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the control device and the control method embodiment provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0156] Based on the hardware implementation of the above program modules and in order to implement the method of the embodiment of the present application, the embodiment of the present application also provides an electronic device. Fig.11 Only an exemplary structure of the electronic device is shown, not all structures, and it can be implemented as needed. Fig.11 Partial or complete structure shown.

[0157] like Fig.11 As shown, the electronic device 1100 provided in the embodiment of the present application includes: at least one processor 1101, a memory 1102, a user interface 1103 and at least one network interface 1104. The various components in the electronic device 1100 are coupled together through a bus system 1105. It can be understood that the bus system 1105 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1105 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, in Fig.11 Various buses are labeled as bus system 1105.

[0158] The user interface 1103 may include a display, a keyboard, a mouse, a trackball, a click wheel, keys, buttons, a touch pad or a touch screen.

[0159] The memory 1102 in the embodiment of the present application is used to store various types of data to support the operation of the electronic device. Examples of such data include: any computer program used to operate on the electronic device.

[0160] The control method disclosed in the embodiment of the present application can be applied to the processor 1101, or implemented by the processor 1101. The processor 1101 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the control method can be completed by the hardware integrated logic circuit or software instructions in the processor 1101. The above-mentioned processor 1101 can be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 1101 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the memory 1102, and the processor 1101 reads the information in the memory 1102, and completes the steps of the control method provided in the embodiment of the present application in combination with its hardware.

[0161] In an exemplary embodiment, the electronic device may be implemented by one or more application specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field programmable gate array (FPGA), general processor, controller, microcontroller (MCU), microprocessor, or other electronic components to execute the aforementioned method.

[0162] It can be understood that the memory 1102 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and direct RAM bus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0163] In an exemplary embodiment, the present application also provides a storage medium, namely a computer storage medium, which may be a computer-readable storage medium, for example, a memory 1102 storing a computer program, and the computer program may be executed by a processor 1101 of an electronic device to complete the steps of the method of the present application. The computer-readable storage medium may be a memory such as a ROM, a PROM, an EPROM, an EEPROM, a Flash Memory, a magnetic surface memory, an optical disk, or a CD-ROM.

[0164] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0165] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0166] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An energy storage circuit for an air conditioner control device, It is characterized in that The control device of the air conditioner comprises: a controller and a power supply circuit, wherein the power supply circuit is used to convert and process the external power supply and supply power to the controller, and the energy storage circuit is arranged between the output end of the power supply circuit and the power supply end of the controller, and the energy storage circuit comprises: A supercapacitor switching circuit, the supercapacitor switching circuit comprising: a plurality of supercapacitors and a switching device; The switching device includes a switching circuit disposed between two adjacent supercapacitors, and is used to control the multiple supercapacitors to switch between a first connection state and a second connection state, wherein the first connection state is that the multiple supercapacitors are connected in parallel, and the second connection state is that the multiple supercapacitors are connected in series; A charging circuit, wherein the output end of the charging circuit is connected to the input end of the supercapacitor switching circuit, and is used to charge each of the supercapacitors.

2. The energy storage circuit of the air conditioner control device according to claim 1, It is characterized in that The energy storage circuit also includes: A discharge circuit, wherein the input end of the discharge circuit is connected to the output end of the supercapacitor switching circuit, and is used to discharge the output voltage of the supercapacitor switching circuit after boosting it.

3. The energy storage circuit according to claim 1, It is characterized in that The energy storage circuit also includes: A current detection control circuit, wherein the output end of the current detection circuit is connected to the input end of the charging circuit, and is used to detect the current value of the circuit, and based on the current value, generate charging indication information, and the charging indication information is used to control the conduction of the charging circuit.

4. The energy storage circuit according to claim 1, It is characterized in that The switching circuit comprises: A switch device, the switch device comprising: A first static contact and a second static contact, wherein the first static contact is connected to a first end of a first super capacitor, and the second static contact is connected to a second end of the first super capacitor; A first moving contact, a second moving contact, a third moving contact and a fourth moving contact, wherein the first moving contact is disconnected from the second super capacitor; the second moving contact and the third moving contact are connected to the first end of the second super capacitor, and the fourth moving contact is connected to the second end of the second super capacitor; Among them, the second supercapacitor is arranged adjacent to the first supercapacitor, the first connection state is a connection state in which the first static contact is connected to the second moving contact, and the second static contact is connected to the fourth moving contact; the second connection state is a connection state in which the first static contact is connected to the first moving contact, and the second static contact is connected to the third moving contact.

5. A control method, It is characterized in that Applied to the energy storage circuit according to any one of claims 1 to 4, the method comprising: Get charging instruction information; generating a control signal based on the charging indication information and a first set threshold; The control signal is a first control signal for controlling the switching device to switch to the second connection state or a second control signal for controlling the switching device to switch to the first connection state.

6. The method according to claim 5, It is characterized in that The generating a control signal based on the charging indication information and the first set threshold comprises: Based on the charging indication information, generate the first control signal, and obtain a first voltage value, where the first voltage value is an output voltage value of the supercapacitor switching circuit; Determining that the first voltage value is greater than or equal to a first set threshold value, generating the second control signal; The first set threshold is the maximum chargeable voltage value of each supercapacitor in the supercapacitor switching circuit.

7. The method according to claim 5, It is characterized in that The method further comprises: Obtaining discharge indication information; Based on the discharge indication information, obtaining a second voltage value, where the second voltage value is an output voltage value of the supercapacitor switching circuit; determining whether the second voltage value is greater than or equal to a second set threshold, and if so, generating the first control signal; If not, generating the second control signal; Among them, the second set threshold is the voltage value of the supercapacitor switching circuit corresponding to the maximum duty cycle of the discharge circuit.

8. A control device, It is characterized in that Applicable to the supercapacitor control circuit according to any one of claims 1 to 4, the control device comprising: An acquisition module, used to acquire an operating parameter value of the energy storage circuit in an operating mode, wherein the operating mode includes: a charging mode; A generation mode, for generating a control signal based on the operating parameter value in the charging mode and a first set threshold value; The control signal is a first control signal for controlling the switching device to switch to the second connection state or a second control signal for controlling the switching device to switch to the first connection state.

9. An electronic device, It is characterized in that include: The energy storage circuit according to claims 1 to 4, wherein the electronic device further comprises: a processor and a memory for storing a computer program that can be run on the processor, wherein: The processor is used to execute the steps of the method according to any one of claims 5 to 7 when running a computer program.

10. A computer storage medium having a computer program stored thereon, It is characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 5 to 7 are implemented.

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