CN116564758B - Intelligent driving method and device for energy storage system control cabinet, electronic equipment and medium - Google Patents
Intelligent driving method and device for energy storage system control cabinet, electronic equipment and medium Download PDFInfo
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- CN116564758B CN116564758B CN202310842074.9A CN202310842074A CN116564758B CN 116564758 B CN116564758 B CN 116564758B CN 202310842074 A CN202310842074 A CN 202310842074A CN 116564758 B CN116564758 B CN 116564758B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 6
- 230000009191 jumping Effects 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
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Abstract
The application relates to an intelligent driving method and device for an energy storage system control cabinet, electronic equipment and media, wherein the method comprises the following steps: the main controller sends a driving instruction; the BMS controller driving parameter database is called to obtain the minimum driving duty ratio corresponding to the relay of the current specification; calculating the low-power consumption continuous operation duty ratio of the relay; outputting a PWM signal with a duty ratio of 100%; when the relay is driven stably, the duty ratio of the PWM signal is reduced to the low-power-consumption continuous operation duty ratio of the relay; keeping the PWM signal output of the low-power consumption continuous operation duty ratio of the relay of the current specification; judging whether a breaking relay is needed or not; if yes, outputting a PWM signal with the duty ratio of 0%; otherwise, turning to PWM signal output which keeps the minimum driving duty ratio corresponding to the relay of the current specification. According to the application, the BMS controller driving parameter database is generated, and after the driving is stable, the relay is enabled to continuously operate under the condition of extremely low power consumption through the regulation and control of the PWM duty ratio.
Description
Technical Field
The application relates to the technical field of energy storage systems, in particular to an intelligent driving method and device for an energy storage system control cabinet, electronic equipment and medium.
Background
The electrochemical energy storage system mainly comprises a battery pack and a control cabinet, wherein a Battery Management System (BMS), a monitoring system and the like matched with the battery pack are arranged in the control cabinet. BMS is one of the core components, and is mainly used for intelligently managing and maintaining each battery unit, monitoring running states of the battery such as SOC, SOH and the like in real time, preventing the safety risk of the battery body or the system, and assisting the safe and efficient use of the energy storage battery.
With the vigorous development of energy storage systems, the requirements on the system efficiency are gradually increased, and meanwhile, safety control is considered. The main power consumption source of the control cabinet of the energy storage system is a high-power relay, and a large constant current is required to be continuously driven. In the conventional constant-current output control mode, the total power consumption of the relay driving part reaches the A level, and the power consumption is extremely high.
Disclosure of Invention
To achieve the above and other advantages and in accordance with the purpose of the present application, a first object of the present application is to provide an intelligent driving method of an energy storage system control cabinet, comprising the steps of:
s1, a main controller sends a driving instruction to a relay driving module;
s2, calling a BMS controller driving parameter database to obtain the minimum driving duty ratio corresponding to the relay of the current specification;
s3, calculating the low-power-consumption continuous operation duty ratio of the relay according to the minimum driving duty ratio corresponding to the relay of the current specification;
s4, outputting a PWM signal with the duty ratio of 100% to a corresponding port;
s5, maintaining the PWM signal with the output duty ratio of 100%;
s6, after the relay is driven stably, gradually reducing the duty ratio of the PWM signal to the low-power-consumption continuous operation duty ratio of the relay;
s7, maintaining the PWM signal output of the low-power-consumption continuous operation duty ratio of the relay with the current specification;
s8, judging whether a relay needs to be disconnected or not;
s9, outputting a PWM signal with the duty ratio of 0% to a corresponding port if the PWM signal is positive;
and S10, if not, jumping to the PWM signal output step of keeping the minimum driving duty ratio corresponding to the relay of the current specification.
Further, the construction of the BMS controller driving parameter database includes the steps of:
setting the initial duty ratio of the PWM signal of the starting relay to be 100%;
outputting the PWM signal driving relay with the initial duty ratio;
gradually reducing the duty ratio of the PWM signal, continuously collecting the output state of the relay until the relay is disconnected, and storing the minimum duty ratio of the driving relay.
Further, the construction of the BMS controller driving parameter database further includes the steps of:
the step of replacing the relays with the same specification is repeatedly executed from the step of setting the initial duty ratio of the PWM signals of the starting relays to 100%, so that the minimum duty ratios of a plurality of driving relays are obtained;
obtaining the maximum value of the minimum duty ratios of the driving relays to obtain the minimum driving duty ratio corresponding to the relay of the current specification;
and storing the minimum driving duty ratio corresponding to the relay of the current specification into a BMS controller driving parameter database.
Further, the step S3 is specifically to take a preset proportion of increasing the minimum driving duty ratio corresponding to the relay with the current specification as the low-power-consumption continuous operation duty ratio of the relay, wherein the preset proportion is 5% -15%.
Further, the relay driving stabilization is that the relay coil is driven by the PWM signal with the duty ratio of 100% for at least a preset time.
Further, the PWM signal output of the low-power-consumption continuous operation duty ratio of the relay of the current specification is kept, and meanwhile, the minimum frequency corresponding to the relay of the current specification is obtained, and the BMS controller is controlled to operate according to the minimum frequency.
Further, the step-down PWM signal duty cycle is a step-down PWM signal duty cycle according to a preset duty cycle decrease gradient.
A second object of the present application is to provide an electronic device including: a memory having program code stored thereon; a processor coupled to the memory and which, when executed by the processor, implements the above-described method.
A third object of the present application is to provide a computer readable storage medium having stored thereon program instructions which, when executed, implement the above-described method.
The application provides an intelligent driving device for an energy storage system control cabinet for realizing the method, which comprises a main controller, a battery core acquisition unit and a relay driving module, wherein the battery core acquisition unit is used for acquiring a battery core state, controlling battery core balance, the main controller is used for acquiring parameters of the energy storage system and driving a BMS controller, and the relay driving module is used for controlling various relays of a power port; the relay driving module comprises an MOS tube, a pull-down resistor, a current-limiting resistor, an energy storage capacitor, a discharge resistor and a follow current diode, wherein the energy storage capacitor is connected in parallel with the discharge resistor, one end of a parallel branch of the energy storage capacitor and the discharge resistor is connected with the positive electrode of a coil of the relay, the other end of the parallel branch of the energy storage capacitor and the discharge resistor is connected with the negative electrode of the follow current diode, the positive electrode of the follow current diode is connected with the negative electrode of the coil of the relay, the positive electrode of the follow current diode is connected with the drain electrode of the MOS tube, the grid electrode of the MOS tube is connected with the driving controller end of the main controller, the pull-down resistor is connected between the grid electrode of the MOS tube and the ground, and the current-limiting resistor is connected between the source electrode of the MOS tube and the ground.
Compared with the prior art, the application has the beneficial effects that:
the application provides an intelligent driving method and device for an energy storage system control cabinet, electronic equipment and media, which are based on a traditional circuit, and are suitable for adding a protection device and early acquisition preparation work to generate a BMS controller driving parameter database, after driving is stable, a relay is enabled to continuously operate under the condition of extremely low power consumption through the regulation and control of PWM duty ratio, output is stable, reactive loss output of a system is reduced, the overall efficiency of the system is improved, and the method is very suitable for application of energy storage direct current products and improves the competitiveness of the products.
The foregoing description is only an overview of the present application, and is intended to provide a better understanding of the present application, as it is embodied in the following description, with reference to the preferred embodiments of the present application and the accompanying drawings. Specific embodiments of the present application are given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic diagram of an intelligent driving device of an energy storage system control cabinet in embodiment 1;
fig. 2 is a circuit diagram of a relay driving module of embodiment 1;
FIG. 3 is a flow chart of an intelligent driving method of an energy storage system control cabinet in embodiment 2;
fig. 4 is a flow chart for constructing a BMS controller driving parameter database according to embodiment 2;
fig. 5 is a view showing the relay coil specification of example 2;
fig. 6 is a schematic diagram of an electronic device of embodiment 3;
fig. 7 is a schematic diagram of a computer storage medium according to embodiment 4.
Detailed Description
The present application will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present application, and have no specific meaning per se. Thus, "module," "component," or "unit" may be used in combination.
Example 1
The intelligent driving device of the energy storage system control cabinet comprises a main controller, a battery core acquisition unit, a relay driving module, a voltage regulating module and a communication isolation unit, wherein the voltage regulating module is used for adapting different input voltages, making corresponding design adjustment, outputting power to each control component at the later stage, the communication isolation unit adopts communication isolation and IO operation isolation devices to realize isolation at the high-low voltage side, and is used for protecting the safety of a user, and comprises but not limited to UART/SPI/IIC and the like.
As shown in fig. 2, the relay driving module comprises a MOS tube, a pull-down resistor R1, a current-limiting resistor R2, an energy storage capacitor C1, a bleeder resistor R3, and a freewheeling diode, wherein the energy storage capacitor is connected in parallel with the bleeder resistor, one end of a parallel branch of the energy storage capacitor and the bleeder resistor is connected with the coil positive electrode of the relay, a power source vcc+ is connected with the coil positive electrode of the relay to supply power to the relay coil, the other end of the parallel branch of the energy storage capacitor and the bleeder resistor is connected with the negative electrode of the freewheeling diode, the energy storage capacitor is used for storing the energy of the relay coil, the positive electrode of the freewheeling diode is connected with the drain electrode of the MOS tube, the gate electrode of the MOS tube is connected with the driving controller end of the main controller, the pull-down resistor is connected between the gate electrode of the MOS tube and the ground, and the current-limiting resistor is connected between the source electrode of the MOS tube and the ground. A freewheeling diode is used directly on the relay coil to allow current to be re-circulated and to assist in maintaining the relay in operation.
Based on traditional circuit, add protection device and earlier stage and gather the preparation work properly, generate BMS controller drive parameter database, after the drive is stable, through PWM duty cycle's regulation and control for the relay is continuous running under the condition of extremely low-power consumption, stable output reduces the output of system reactive power loss, promotes the whole efficiency of system, is particularly suitable for the application of energy storage direct current product, promotes product competitiveness.
Example 2
The driving method of the intelligent driving device of the energy storage system control cabinet can refer to corresponding description in the embodiment of the device for the detailed description of the device, and will not be repeated here. As shown in fig. 3, the method comprises the following steps:
s1, a main controller sends a driving instruction to a relay driving module;
s2, calling a BMS controller driving parameter database to obtain the minimum driving duty ratio corresponding to the relay of the current specification; as shown in fig. 4, the construction of the BMS controller driving parameter database includes the steps of:
preparing a relay sample;
the acquisition device is connected with a relay control port, and the right-most port in the figure 2;
setting the initial duty ratio of the PWM signal of the starting relay to be 100%;
a PWM signal driving relay outputting an initial duty ratio, and a drive_ctrl inputting the PWM signal of the initial duty ratio;
gradually reducing the duty ratio of the PWM signal, continuously collecting the output state of the relay until the relay is disconnected, and storing the minimum duty ratio of the driving relay. In this embodiment, the step-down of the duty cycle of the PWM signal is to gradually decrease the duty cycle of the PWM signal according to a preset duty cycle decrease gradient. Such as: and outputting PWM signals according to the duty ratio reduced by 5% each time, continuously collecting the output state of the relay, judging whether the relay is disconnected or not, if not, continuously executing the step of jumping to gradually reduce the duty ratio of the PWM signals, judging whether to reappear 5 times, otherwise, continuously executing the step of jumping to setting the initial duty ratio of the PWM signals for starting the relay to 100%, if so, recording the minimum duty ratio of the driving relay, wherein D=x%.
In order to avoid control experimental errors, the construction of the BMS controller driving parameter database further includes the steps of:
the relay with the same specification is replaced, the step of setting the initial duty ratio of the PWM signal of the starting relay to 100% is repeatedly executed, and the minimum duty ratios of a plurality of driving relays are obtained;
obtaining the maximum value in the minimum duty ratios of the driving relays to obtain the minimum driving duty ratio y corresponding to the relay of the current specification;
and storing the minimum driving duty ratio y% corresponding to the relay of the current specification into a BMS controller driving parameter database.
S3, calculating the low-power-consumption continuous operation duty ratio of the relay according to the minimum driving duty ratio corresponding to the relay of the current specification; the method specifically comprises the steps of taking a preset proportion of the minimum driving duty ratio corresponding to the relay of the current specification as the low-power-consumption continuous operation duty ratio of the relay, wherein the preset proportion is 5% -15%. Such as: and setting the preset proportion to 10%, namely, increasing the minimum driving duty ratio corresponding to the relay with the current specification by 10% to serve as the low-power-consumption continuous operation duty ratio of the relay. The minimum driving duty ratio corresponding to the relay of the current specification is increased by a preset proportion to ensure the safety and stability of the output of the relay.
S4, outputting a PWM signal with the duty ratio of 100% to a corresponding port;
s5, maintaining the PWM signal with the output duty ratio of 100%;
s6, after the relay is driven stably, gradually reducing the duty ratio of the PWM signal to the low-power-consumption continuous operation duty ratio of the relay; such as: the PWM signal is output at a 5% duty cycle reduction each time.
S7, maintaining the PWM signal output of the low-power-consumption continuous operation duty ratio of the relay with the current specification;
s8, judging whether a relay needs to be disconnected or not;
s9, outputting a PWM signal with the duty ratio of 0% to a corresponding port if the PWM signal is positive;
s10, if not, jumping to a PWM signal output step of keeping the minimum driving duty ratio corresponding to the relay of the current specification;
s11, after the PWM signal with the duty ratio of 0% is output to the corresponding port, waiting for the next instruction.
The relay driving is stable by driving the relay coil by the PWM signal with a duty ratio of 100% for at least a preset time. Coil specifications are shown in fig. 5, as the relay coil is driven by an initial dc voltage level of at least the rated voltage for at least 100 microseconds, and then the relay is maintained in an operational state.
And obtaining the minimum frequency corresponding to the current specification relay while keeping the PWM signal output of the low-power-consumption continuous operation duty ratio of the current specification relay, and controlling the BMS controller to operate according to the minimum frequency. In this embodiment, the setting frequency is not lower than 15 kHz to avoid occurrence of audible control noise.
According to the application, the relay driving PWM signal duty ratio is obtained by learning the relay driving parameters, and the control signal duty ratio is adjusted, so that the relay device is driven with the lowest effective value, the driving power consumption, the system power consumption and the system power cost are reduced, and the method is very suitable for application and popularization of energy storage direct current products and improves the product competitiveness.
Example 3
An electronic device, as shown in fig. 6, comprising: a memory having program code stored thereon; a processor coupled to the memory and which when executed by the processor, implements the method described above. For detailed description of the method, reference may be made to corresponding descriptions in the above method embodiments, and details are not repeated here.
Example 4
A computer readable storage medium having stored thereon program instructions that when executed implement the above-described method, as shown in fig. 7. For detailed description of the method, reference may be made to corresponding descriptions in the above method embodiments, and details are not repeated here.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The foregoing description is illustrative of embodiments of the present disclosure and is not to be construed as limiting one or more embodiments of the present disclosure. Various modifications and alterations to one or more embodiments of this description will be apparent to those skilled in the art. Any modifications, equivalent substitutions, improvements, or the like, which are within the spirit and principles of one or more embodiments of the present disclosure, are intended to be included within the scope of the claims of one or more embodiments of the present disclosure.
Claims (4)
1. The intelligent driving method of the energy storage system control cabinet is characterized by comprising the following steps of:
s1, a main controller sends a driving instruction to a relay driving module;
s2, calling a BMS controller driving parameter database to obtain the minimum driving duty ratio corresponding to the relay of the current specification;
s3, calculating the low-power-consumption continuous operation duty ratio of the relay according to the minimum driving duty ratio corresponding to the relay of the current specification;
s4, outputting a PWM signal with the duty ratio of 100% to a corresponding port;
s5, maintaining the PWM signal with the output duty ratio of 100%;
s6, after the relay is driven stably, gradually reducing the duty ratio of the PWM signal to the low-power-consumption continuous operation duty ratio of the relay;
s7, maintaining the PWM signal output of the low-power-consumption continuous operation duty ratio of the relay with the current specification;
s8, judging whether a relay needs to be disconnected or not;
s9, outputting a PWM signal with the duty ratio of 0% to a corresponding port if the PWM signal is positive;
s10, if not, jumping to the PWM signal output step of keeping the minimum driving duty ratio corresponding to the relay of the current specification;
the construction of the BMS controller driving parameter database comprises the following steps:
setting the initial duty ratio of the PWM signal of the starting relay to be 100%;
outputting the PWM signal driving relay with the initial duty ratio;
gradually reducing the duty ratio of the PWM signal, continuously collecting the output state of the relay until the relay is disconnected, and storing the minimum duty ratio of the driving relay;
the construction of the BMS controller driving parameter database further comprises the following steps:
the step of replacing the relays with the same specification is repeatedly executed from the step of setting the initial duty ratio of the PWM signals of the starting relays to 100%, so that the minimum duty ratios of a plurality of driving relays are obtained;
obtaining the maximum value of the minimum duty ratios of the driving relays to obtain the minimum driving duty ratio corresponding to the relay of the current specification;
storing the minimum driving duty ratio corresponding to the relay of the current specification into a BMS controller driving parameter database;
the step S3 is specifically to take the preset proportion of the minimum driving duty ratio corresponding to the relay of the current specification as the low-power-consumption continuous operation duty ratio of the relay, wherein the preset proportion is 5% -15%;
the relay driving stabilization is that a PWM signal with the duty ratio of 100% drives at least for preset time through a relay coil;
the PWM signal output of the low-power-consumption continuous operation duty ratio of the relay with the current specification is kept, and meanwhile, the minimum frequency corresponding to the relay with the current specification is obtained, and the BMS controller is controlled to operate according to the minimum frequency;
the step-down PWM signal duty cycle is that the PWM signal duty cycle is gradually reduced according to a preset duty cycle reduction gradient.
2. An electronic device, comprising: a memory having program code stored thereon; a processor coupled to the memory and which, when executed by the processor, implements the method of claim 1.
3. A computer readable storage medium, having stored thereon program instructions which, when executed, implement the method of claim 1.
4. The intelligent driving device for the energy storage system control cabinet for realizing the method as claimed in claim 1, wherein: the battery cell acquisition unit is used for acquiring the state of the battery cell, controlling the balance of the battery cell, the main controller is used for acquiring parameters of the energy storage system and driving the BMS controller, and the relay driving module is used for controlling various relays of the power port; the relay driving module comprises an MOS tube, a pull-down resistor, a current-limiting resistor, an energy storage capacitor, a discharge resistor and a follow current diode, wherein the energy storage capacitor is connected in parallel with the discharge resistor, one end of a parallel branch of the energy storage capacitor and the discharge resistor is connected with the positive electrode of a coil of the relay, the other end of the parallel branch of the energy storage capacitor and the discharge resistor is connected with the negative electrode of the follow current diode, the positive electrode of the follow current diode is connected with the negative electrode of the coil of the relay, the positive electrode of the follow current diode is connected with the drain electrode of the MOS tube, the grid electrode of the MOS tube is connected with the driving controller end of the main controller, the pull-down resistor is connected between the grid electrode of the MOS tube and the ground, and the current-limiting resistor is connected between the source electrode of the MOS tube and the ground.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310842074.9A CN116564758B (en) | 2023-07-11 | 2023-07-11 | Intelligent driving method and device for energy storage system control cabinet, electronic equipment and medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310842074.9A CN116564758B (en) | 2023-07-11 | 2023-07-11 | Intelligent driving method and device for energy storage system control cabinet, electronic equipment and medium |
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| CN116564758B true CN116564758B (en) | 2023-09-22 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225896A (en) * | 2015-10-26 | 2016-01-06 | 青岛鼎信通讯消防安全有限公司 | Bus-powered low-power relay control method |
| CN110379676A (en) * | 2019-08-13 | 2019-10-25 | 南京雁展科技有限公司 | A kind of vehicle-mounted relay energy-saving control circuit of protection with voltage |
| CN210378896U (en) * | 2019-10-11 | 2020-04-21 | 广东美的制冷设备有限公司 | Relay drive circuit, relay and air conditioner |
| CN111370261A (en) * | 2020-02-20 | 2020-07-03 | 北京动力源新能源科技有限责任公司 | Relay control method and control system |
-
2023
- 2023-07-11 CN CN202310842074.9A patent/CN116564758B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225896A (en) * | 2015-10-26 | 2016-01-06 | 青岛鼎信通讯消防安全有限公司 | Bus-powered low-power relay control method |
| CN110379676A (en) * | 2019-08-13 | 2019-10-25 | 南京雁展科技有限公司 | A kind of vehicle-mounted relay energy-saving control circuit of protection with voltage |
| CN210378896U (en) * | 2019-10-11 | 2020-04-21 | 广东美的制冷设备有限公司 | Relay drive circuit, relay and air conditioner |
| CN111370261A (en) * | 2020-02-20 | 2020-07-03 | 北京动力源新能源科技有限责任公司 | Relay control method and control system |
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Address after: West of Building 28, No. 2, Mount Taishan Road, High tech Zone, Suzhou City, Jiangsu Province, 215000 Patentee after: Suzhou Jingkong Energy Technology Co.,Ltd. Address before: West of Building 28, No. 2, Mount Taishan Road, High tech Zone, Suzhou City, Jiangsu Province, 215000 Patentee before: SUZHOU JK ENERGY Ltd. |
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