CN117118044A - Power supply management system and method - Google Patents
Power supply management system and method Download PDFInfo
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- CN117118044A CN117118044A CN202310986625.9A CN202310986625A CN117118044A CN 117118044 A CN117118044 A CN 117118044A CN 202310986625 A CN202310986625 A CN 202310986625A CN 117118044 A CN117118044 A CN 117118044A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004146 energy storage Methods 0.000 claims abstract description 105
- 239000003990 capacitor Substances 0.000 claims abstract description 92
- 238000007726 management method Methods 0.000 claims abstract description 57
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
Abstract
The invention discloses a power management system and a power management method, relates to the technical field of power management, and aims to solve the problems that energy consumption equipment cannot meet the requirements of normal starting and working of electronic equipment at-40 ℃ and the energy consumption equipment cannot be automatically powered off under the condition that the energy consumption equipment is not powered off in a standby mode. The power management system includes: the energy storage device comprises an energy storage battery, a capacitor assembly, a first controllable switch, a second controllable switch and a controller connected with the first controllable switch and the second controllable switch, wherein the first controllable switch and the second controllable switch are connected in parallel to a first electrode of the energy storage battery, and the first controllable switch and the second controllable switch are respectively connected with a second electrode of the energy storage battery through the capacitor assembly. The method applies the power management system. The power management system and the method provided by the invention are used for ensuring the performance of the power management system in a low-temperature environment of-40 ℃, and can also enable the energy-saving equipment to manage the power system under the condition that standby is not shut down, so that the electric quantity of a battery is prevented from being exhausted and the battery core is prevented from being damaged.
Description
Technical Field
The invention relates to the technical field of power management, in particular to a power management system and a power management method.
Background
With the demands of social development and the expansion of the application fields of energy utilization equipment, the demands of people on the energy utilization equipment are also increasing. The power management system of the energy-consuming device plays a decisive role in cruising performance.
However, it is sometimes desirable to use the energy apparatus in a low temperature environment of-40 ℃. On the one hand, the discharge voltage and current of the energy-using device in the low-temperature environment of-40 ℃ cannot meet the normal starting and working conditions of the electronic device, so that the performance of the power supply system can be limited. On the other hand, the existing energy utilization equipment cannot manage the power supply system under the condition that standby is not shut down, so that the problems that the electric quantity of a battery is exhausted, a battery core is damaged, and the energy utilization equipment cannot normally start up to work next time are solved.
Disclosure of Invention
The invention aims to provide a power management system and a power management method, which are used for improving the performance of the power management system in a low-temperature environment of-40 ℃ and ensuring the normal operation of a robot under the condition of-40 ℃.
In a first aspect, the present invention provides a power management system for powering an energy device, the power management system comprising: the energy storage device comprises an energy storage battery, a capacitor assembly, a first controllable switch, a second controllable switch and a controller connected with the first controllable switch and the second controllable switch, wherein the first controllable switch and the second controllable switch are connected in parallel to a first electrode of the energy storage battery, and the first controllable switch and the second controllable switch are respectively connected with a second electrode of the energy storage battery through the capacitor assembly;
the controller is used for controlling the first controllable switch to be closed and the second controllable switch to be opened when the energy utilization equipment is in a non-starting state, so that the energy storage battery charges the capacitor assembly through the first controllable switch; and when the capacitor assembly reaches a full-power state, the first controllable switch is controlled to be opened, and the second controllable switch is controlled to be closed, so that the capacitor assembly discharges to the energy storage battery through the second controllable switch.
Compared with the prior art, the power management system provided by the invention comprises an energy storage battery, a capacitor assembly, a first controllable switch, a second controllable switch and a controller connected with the first controllable switch and the second controllable switch, wherein the first controllable switch and the second controllable switch are connected in parallel on a first electrode of the energy storage battery, and the first controllable switch and the second controllable switch are respectively connected with a second electrode of the energy storage battery through the capacitor assembly. Because the capacitor assembly can be charged in a few seconds and can bear almost infinite charging period, the controller can control the first controllable switch to be closed and control the second controllable switch to be opened, so that the energy storage battery and the capacitor assembly are conducted through the first controllable switch, and the capacitor assembly is rapidly charged by the energy storage battery, and the capacitor assembly can rapidly reach a full-charge state. When the energy storage battery is required to be charged, the controller can be used for controlling the first controllable switch to be opened and the second controllable switch to be closed, so that the energy storage battery and the capacitor assembly are conducted through the second controllable switch, and the capacitor assembly has the characteristic of instantaneously discharging high power at a low temperature, so that the capacitor assembly can be used for discharging the energy storage battery through the second controllable switch, the defect of low-temperature output capacity of the battery can be compensated, and the normal operation of the robot at the temperature of minus 40 ℃ is ensured.
From the above, the power management system of the embodiment of the invention can improve the performance of the power management system in a low-temperature environment of-40 ℃ and ensure the normal operation of the robot at-40 ℃.
In a second aspect, an embodiment of the present invention provides a power management method, applying the power management system in the first aspect, where the method includes:
when the energy utilization equipment is in a non-starting state, the controller controls the first controllable switch to be closed, and the second controllable switch to be opened, so that the energy storage battery charges the capacitor assembly through the first controllable switch;
and when the capacitor assembly reaches a full-power state, the controller controls the first controllable switch to be opened, and the second controllable switch to be closed, so that the capacitor assembly discharges to the energy storage battery through the second controllable switch.
Compared with the prior art, the beneficial effects of the power management method provided by the invention are the same as those of the power management system described in the first aspect, and the description is omitted here.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a circuit diagram of a power management system according to an embodiment of the invention.
Reference numerals:
100-energy storage battery, 200-capacitor assembly, 300-first controllable switch, 400-second controllable switch, 500-controller, 600-first detector, 700-load, 800-second detector, 900-third controllable switch, 1000-self-resetting switch, 1100-optocoupler voltage conversion module, 1110-diode, 1120-optocoupler relay, 1130-direct current converter.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
With the demands of social development and the expansion of the application fields of energy utilization equipment, the demands of people on the energy utilization equipment are also increasing. The power management system of the energy-consuming device plays a decisive role in cruising performance.
However, it is sometimes desirable to use the energy apparatus in a low temperature environment of-40 ℃. On the one hand, most of the existing intelligent robots adopt a driving mode of taking a battery as an energy source, and are started under the condition of low temperature of minus 40 ℃, and due to the low-temperature characteristic of the battery, the discharging voltage and the discharging current of the low-temperature battery in the market under the condition of low temperature of minus 40 ℃ are limited, so that the normal starting of a main control board, a driver and a motor of the robot under the low-temperature environment is limited, and the functions of products are influenced. On the other hand, the existing energy utilization equipment cannot manage the power supply system under the condition that standby is not shut down, so that the problems that the electric quantity of a battery is exhausted, a battery core is damaged, and the energy utilization equipment cannot normally start up to work next time are solved. Because the power switch of the robot is a self-locking switch at present, if an operator forgets to turn off the power switch in the use process of the robot, continuous power consumption of electric equipment can lead to continuous consumption of battery energy of the robot, the performance of the battery is influenced, the cruising performance of the robot is reduced, and even the execution of the next operation task can be influenced.
In order to solve the problems, the embodiment of the invention provides a power management system and a method, wherein the power management system is used for supplying power to energy-using equipment, so that the problems that the discharge voltage and the discharge current of the energy-using equipment cannot meet the requirements of normal starting and working of electronic equipment in a low-temperature environment of-40 ℃, and the energy-using equipment cannot be automatically powered off to cause the electric quantity exhaustion of a battery and the battery core damage under the condition that the energy-using equipment is not powered off in a standby state are solved. On one hand, the performance of the power management system in the low-temperature environment of-40 ℃ is improved, and the normal operation of the robot under the condition of-40 ℃ is ensured. On the other hand, the energy-saving device can manage the power supply system under the condition that the standby is not shut down, and avoids the electric quantity exhaustion of the battery and the damage of the battery core, so that the energy-saving device can be used for normally starting up the operation next time. It should be appreciated that the energy device may be a robot, an electric vehicle, or other electronic energy device, without limitation. Hereinafter, the embodiment of the present invention will be specifically illustrated by taking a robot as an example.
Fig. 1 shows a circuit diagram of a power management system according to an exemplary embodiment of the present invention. As shown in fig. 1, the power management system according to the exemplary embodiment of the present invention includes an energy storage battery 100, a capacitor assembly 200, a first controllable switch 300, a second controllable switch 400, and a controller 500 connected to the first controllable switch 300 and the second controllable switch 400, wherein the first controllable switch 300 and the second controllable switch 400 are connected in parallel to a first electrode of the energy storage battery 100, and the first controllable switch 300 and the second controllable switch 400 are respectively connected to a second electrode of the energy storage battery 100 through the capacitor assembly 200. The energy storage battery 100 may be a 48V battery.
The controller 500 may be, for example, a FPGA (Field-Programmable Gate Array) chip. The FPGA chip is a field programmable gate array and is an integrated circuit with programmable characteristics which is designed and realized in advance on a silicon chip. From the viewpoint of the internal structure of the FPGA, it mainly includes: programmable input/output units (I/O), programmable logic blocks (LC), complete Clock Management (CMT), embedded Block RAM (BRAM), wiring resources, embedded underlying functional units, dedicated hardware modules, etc. A particular advantage of FPGA chips is their flexibility, i.e. the chip functionality can be changed at any time.
The capacitor assembly 200 may be a super capacitor assembly, and the super capacitor assembly may be formed by connecting a plurality of super capacitor units in series, in parallel, or in a combination of series and parallel, and specifically, the manner of connecting in series, parallel, or in series and parallel may be selected, and may be set according to actual needs, which is not limited herein. The super capacitor unit can be a 0.1uF/5V super capacitor.
The first electrode may be defined as a positive electrode or a negative electrode of the energy storage battery 100, and when the first electrode is a positive electrode of the energy storage battery 100, the second electrode may be defined as a negative electrode of the energy storage battery 100. When the first electrode is the negative electrode of the energy storage battery 100, the second electrode may be defined as the positive electrode of the energy storage battery 100, which is not limited herein.
The first controllable switch 300 and the second controllable switch 400 may be relays, where the first controllable switch 300 may have a contact 1 and a contact 2, the contact 1 is conducted with the second electrode of the energy storage battery 100, and the contact 2 is conducted with the first electrode of the energy storage battery 100.
For example, when the performance of the battery is limited under the condition of low temperature-40 ℃, and the energy utilization device is in the non-activated state, the controller 500 may control the first controllable switch 300 to be closed (i.e. the first controllable switch 300 is attracted to the 2 contacts), and control the second controllable switch 400 to be opened, so that the energy storage battery 100 and the capacitor assembly 200 are turned on through the first controllable switch 300, and thus the energy storage battery 100 is utilized to rapidly charge the capacitor assembly 200, so that the capacitor assembly 200 rapidly reaches the full-charge state. When the energy storage battery 100 needs to be charged, the controller 500 can be used for controlling the first controllable switch 300 to be opened and the second controllable switch 400 to be closed, so that the energy storage battery 100 and the capacitor assembly 200 are conducted through the second controllable switch 400, and the capacitor assembly 200 has the characteristic of instantaneously discharging high power at a low temperature, so that the capacitor assembly 200 can be used for discharging the energy storage battery through the second controllable switch 400, thereby the defect of low-temperature output capacity of the battery can be compensated, and the normal starting of the robot at the temperature of minus 40 ℃ is ensured.
In one implementation, as shown in fig. 1, the power management system according to the embodiment of the present invention further includes a first detector 600, where the first detector 600 is connected in parallel with the capacitive component 200, and the controller 500 is electrically connected to the first detector 600, and the first detector 600 is used to detect an electrical parameter of the capacitive component 200. It should be understood that the first detector 600 may be one voltage detector connected in parallel to the capacitor assembly 200, or may be a plurality of voltage detection units respectively connected to a plurality of super capacitor units. When the first detector 600 is a voltage detector connected in parallel to the capacitor assembly 200, the voltage detector is used to detect an electrical parameter of the capacitor assembly. When the first detector 600 is a plurality of voltage detection units respectively connected to a plurality of super capacitor units, each voltage detection unit is configured to detect an electrical parameter of the super capacitor unit connected thereto. According to the embodiment of the invention, the voltage detection units are respectively connected to the super capacitor units, so that each super capacitor unit is charged without overpressure, discharged without undervoltage, and the effectiveness of the capacitor is protected in real time.
Illustratively, contact 2 of the first controllable switch 300 is normally open and contact 1 is normally closed when the robot is not powered. When the robot is powered on, the controller (FPGA) sends a command signal to attract the contact 2 of the first controllable switch 300, so that the super capacitor can be charged, the FPGA sends the command signal to attract the second controllable switch 400 after the super capacitor is fully charged, and then the super capacitor and the energy storage battery 100 form a parallel loop. Therefore, the battery output energy in the environment of low temperature of minus 40 ℃ can not ensure that the super capacitor can supplement energy for the driver when the robot driver starts to operate, and the normal start of the driver is ensured.
In specific implementation, the electrical parameters of the capacitor assembly or the super capacitor unit may be a charging voltage and a discharging voltage. When the charging voltage determined by the electrical parameters of the capacitor assembly 200 exceeds the preset charging voltage, the controller 500 may send an instruction to the first controllable switch 300 and the second controllable switch 400, so as to control the first controllable switch 300 to be opened and the second controllable switch 400 to be closed, so that the capacitor assembly 200 may discharge to the energy storage battery 100 through the second controllable switch 400. So that it is ensured that the capacitor assembly 200 does not over-voltage when charging the energy storage battery 100.
When the discharge voltage determined by the electrical parameters of the capacitor assembly 200 exceeds the preset discharge voltage, the controller 500 may send an instruction to the first controllable switch 300 and the second controllable switch 400, so as to control the first controllable switch 300 to be closed and control the second controllable switch 400 to be opened, so that the capacitor assembly 200 may charge the capacitor assembly 200 through the second controllable switch 400. Therefore, the capacitor assembly 200 can be ensured not to be under-voltage when discharging the energy storage battery 100, and further the energy storage battery 100 can be ensured to utilize the characteristic that the super capacitor can instantly discharge with high power at low temperature under the condition of low temperature to obtain the electric energy of the capacitor assembly 200, so that the defect of low-temperature output capacity of the battery can be compensated, and the normal operation of the robot at-40 ℃ is ensured.
The installation of the super capacitor assembly is also an installation structure of building type, so that the super capacitor assembly can adapt to various working conditions and is more convenient to install.
According to the embodiment of the invention, each super capacitor is connected with a voltage detector in parallel for real-time monitoring, and the voltage detector can be fed back to the controller (namely the FPGA module), so that a self-diagnosis function is added to the super capacitor, intelligent management of capacitor charging and discharging is realized, and the performance of the super capacitor is ensured to be in an optimal state.
In an alternative manner, as shown in fig. 1, the power management system according to the embodiment of the present invention further includes a load 700, where the load 700 is connected in series with the first controllable switch 300. It should be appreciated that the load 700 is a precharge and bleeder resistor. The power management system can be protected from adhesion damage caused by overcurrent heat generation, and the risk of short circuit of the super capacitor at the moment of conduction is avoided, so that the battery is protected. Under the condition of shutdown and power failure, the contact 1 of the first controllable switch 300 is attracted, the energy in the super capacitor can be consumed through the load 700, the super capacitor is ensured to be uncharged, and the safety of an operator is protected.
In one implementation, as shown in fig. 1, the power management system according to the embodiment of the present invention further includes a second detector 800, where the second detector 800 is connected in parallel with the energy storage battery 100, the controller 500 is electrically connected to the second detector 800, and the controller 500 is configured to receive the electrical energy output parameter of the energy storage battery 100, and determine the state of the energy utilization device based on the electrical energy output parameter of the energy storage battery 100. It should be appreciated that the second detector 800 is a voltage and current detector and that the electrical energy output parameter includes the output voltage of the energy storage battery 100 and the output current of the energy storage battery 100. When the second detector 800 is connected in parallel with the energy storage battery 100, the second detector 800 may detect an electrical energy output parameter of the energy storage battery 100 to the energy use device.
In one example, the controller 500 is configured to determine the output current of the energy storage battery 100 based on the power output parameter of the energy storage battery 100. For example: if the output current determined based on the power output parameter of the energy storage battery 100 is less than the preset output current, the state of the energy-consuming device is determined to be the standby state. If the output current determined based on the power output parameter of the energy storage battery 100 is greater than or equal to the preset output current, the state of the energy utilization device is determined to be an operating state.
For example, the preset output current is the minimum current value required when the driver of the energy-using device is started, and when the output current of the energy storage battery 100 is smaller than the preset output current and larger than zero, the state of the energy-using device may be determined to be the standby state. When the output current of the energy storage battery 100 is greater than or equal to the preset output current, it may be determined that the state of the energy using device is an operating state. It should be appreciated that the preset current value may be stored in the controller in advance.
In an alternative manner, as shown in fig. 1, the power management system further includes a third controllable switch 900 connected in series with the energy storage battery 100, where the third controllable switch 900 is electrically connected to the controller 500, and if the state of the energy consumption device is a standby state, the controller 500 is further configured to send an off command to the third controllable switch 900 within a preset period of time after determining that the state of the energy consumption device is the standby state, and control the third controllable switch 900 to be in the off state. Here, the certain time may be set in advance according to the use environment, and stored in the controller 500 in advance. The third controllable switch 900 may also be a relay.
It should be appreciated that when the robot needs to work, the controller 500 may send the closing quality to the third controllable switch 900, so that the third controllable switch 900 conducts the energy-consuming device (such as the driver of the robot) and the energy storage battery 100, so that the energy storage battery 100 is used to transmit the electric energy to the driver of the robot, and the robot is started by using the electric energy. When the robot is in the standby state, the controller 500 may perform internal crystal oscillation countdown shutdown, and the controller 500 sends an off command to the third controllable switch 900 within a preset period of time, so that the energy-saving device (such as a driver of the robot) is disconnected from the energy storage battery 100, and the robot is powered off. Therefore, the loss of electric energy can be reduced by automatic shutdown, the endurance of the energy storage battery 100 is improved, and the service life of the energy storage battery 100 is prolonged. The preset duration is a duration preset in the controller 500, and may be specifically set according to actual needs.
For example, since the electric energy output parameter includes an output voltage of the energy storage battery 100, the controller is further configured to determine the output voltage of the energy storage battery based on the electric energy output parameter of the energy storage battery 100, and if the determined output voltage of the electric energy output parameter of the energy storage battery 100 is less than the preset output voltage, the controller 500 is further configured to control the third controllable switch 900 to be in the off state. When the output voltage of the energy storage battery 100 is lower than the preset output voltage, the controller 500 may send an off command to the third controllable switch 900, so that the over-discharge of the energy storage battery 100 may be avoided, the battery cell of the energy storage battery is protected, and the service life of the energy storage battery is prolonged. It should be appreciated that the predetermined voltage value may be stored in the controller in advance.
In one implementation manner, as shown in fig. 1, the power management system according to the embodiment of the present invention further includes a self-resetting switch 1000, the self-resetting switch 1000 is connected in series with the energy storage battery 100, the third controllable switch 900 is connected in parallel with the self-resetting switch 1000, the third controllable switch 900 and the self-resetting switch 1000 are respectively electrically connected to the controller 500, and the self-resetting switch 1000 is used for controlling the third controllable switch 900 to conduct. It should be appreciated that the self-reset switch 1000 is used to control the connection and disconnection of the controller 500, and when the self-reset switch 1000 is powered down, the controller 500 may be turned on, so that a closing instruction is sent to the third controllable switch 900 by the controller 500, so that the third controllable switch 900 is turned on with the energy storage battery 100, and further, power is supplied to an energy-using device such as a robot by using the energy storage battery 100, so that the robot starts to operate.
In an alternative manner, as shown in fig. 1, the power management system of the embodiment of the present invention further includes an optocoupler voltage conversion module 1100, where the optocoupler voltage conversion module 1100 is configured to convert an output voltage of the energy storage battery 100, and if the output voltage of the energy storage battery 100 is higher than a preset voltage, the self-reset switch 900 is pressed, and the self-reset switch 900 can control the energy storage battery 100 to perform voltage conversion through the optocoupler voltage conversion module 1100. It should be understood that, when the preset voltage is an output voltage to an actual energy-using device, such as a robot, and the output voltage of the energy storage battery 100 is greater than a voltage required by the actual energy-using device, the optocoupler voltage conversion module 1100 may be used to convert the output voltage of the energy storage battery 100 into a voltage value that is actually required.
As shown in fig. 1, the optocoupler voltage conversion module 1100 includes a diode 1110 in communication with the self-resetting switch 900 and an optocoupler relay 1120 in communication with the self-resetting switch 900, where the optocoupler relay 1120 is further electrically connected to a controller. The diode 1110 is also electrically connected to the controller 500. The self-reset switch 900 is further connected with the optocoupler relay 1120 through a load R, the optocoupler relay 1120 is connected with the controller through the load R, and the third controllable switch 900 is further connected with the controller 500 through a direct current converter 1130.
The power on-off mode can also use a mos tube to replace a relay, can be selected according to specific conditions, and is not limited herein.
In an implementation manner, the embodiment of the invention further provides a power management method. The power management method of the embodiment of the invention comprises the following steps: when the energy utilization device is in the non-activated state, the controller 500 controls the first controllable switch 300 to be closed and the second controllable switch 400 to be opened, so that the energy storage battery 100 charges the capacitor assembly 200 through the first controllable switch 300. When the capacitor assembly 200 reaches the full-power state, the controller 500 controls the first controllable switch 300 to be opened and the second controllable switch 400 to be closed, so that the capacitor assembly 200 discharges to the energy storage battery 100 through the second controllable switch 400. Therefore, the capacitor assembly can be used for discharging to the energy storage battery through the second controllable switch, so that the defect of low-temperature output capacity of the battery can be compensated, and the robot can work normally at the temperature of minus 40 ℃.
Illustratively, the above method further comprises: the controller 500 controls the first controllable switch 300 to be opened and the second controllable switch 400 to be closed when the charging voltage determined by the electrical parameter of the capacitor assembly 200 exceeds the preset charging voltage, so that the capacitor assembly 200 discharges to the energy storage battery 100 through the second controllable switch 400. The controller 500 controls the first controllable switch 300 to be closed and the second controllable switch 400 to be opened when the discharge voltage determined by the electrical parameters of the capacitor assembly 200 exceeds the preset discharge voltage, so that the energy storage battery 100 charges the capacitor assembly 200 through the first controllable switch 300.
The embodiment of the invention provides a power management system and a power management method, which effectively solve the problem that the starting performance of a robot power system cannot be met under the condition of low temperature of a battery of minus 40 ℃ by adopting a super capacitor energy supplementing supply mode at low temperature. Whether the robot is in a standby non-shutdown state or not can be judged, and the effects of intelligent power supply monitoring, intelligent judgment and intelligent power supply shutdown can be realized. The automatic reset switch and the relay are selected to execute the power-off energy-saving command, and the automatic reset switch, the relay and the FPGA chip are designed, so that the automatic reset switch and the relay have low use cost and obvious effect, and the continuous power consumption of the robot under the condition that the standby battery is not turned off is thoroughly solved. The current and voltage data of the 12V/24V/48V circuit can be sampled in real time to collect and store the output voltage and current data of each circuit. The battery can not be overdischarged in the standby and non-shutdown state of the robot, the battery performance is protected, and the whole cruising function of the robot is ensured.
In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely a specific embodiment of the invention, and it will be apparent that various modifications and combinations thereof can be made without departing from the spirit and scope of the invention. Accordingly, the specification and drawings are merely exemplary illustrations of the present invention as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present disclosure, and the present disclosure is intended to be covered by the present disclosure. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A power management system for providing power to an energy device, the power management system comprising: the energy storage device comprises an energy storage battery, a capacitor assembly, a first controllable switch, a second controllable switch and a controller connected with the first controllable switch and the second controllable switch, wherein the first controllable switch and the second controllable switch are connected in parallel to a first electrode of the energy storage battery, and the first controllable switch and the second controllable switch are respectively connected with a second electrode of the energy storage battery through the capacitor assembly;
the controller is used for controlling the first controllable switch to be closed and the second controllable switch to be opened when the energy utilization equipment is in a non-starting state, so that the energy storage battery charges the capacitor assembly through the first controllable switch; and when the capacitor assembly reaches a full-power state, the first controllable switch is controlled to be opened, and the second controllable switch is controlled to be closed, so that the capacitor assembly discharges to the energy storage battery through the second controllable switch.
2. The power management system of claim 1, further comprising a first detector connected in parallel with the capacitive component, the controller being electrically connected to the first detector for detecting an electrical parameter of the capacitive component;
the controller is used for controlling the first controllable switch to be opened and the second controllable switch to be closed when the charging voltage determined by the electrical parameters of the capacitor assembly exceeds a preset charging voltage, so that the capacitor assembly discharges to the energy storage battery through the second controllable switch;
the controller is used for controlling the first controllable switch to be closed and the second controllable switch to be opened when the discharge voltage determined by the electrical parameters of the capacitor assembly exceeds a preset discharge voltage, so that the energy storage battery charges the capacitor assembly through the first controllable switch.
3. The power management system of claim 1, further comprising a load in series with the first controllable switch.
4. The power management system of claim 1, further comprising a second detector in parallel with the energy storage battery, the controller being electrically connected to the second detector, the controller being configured to receive an electrical energy output parameter of the energy storage battery, and determine the status of the energy usage device based on the electrical energy output parameter of the energy storage battery.
5. The power management system of claim 4, wherein the controller is configured to determine an output current of the energy storage battery based on an electrical energy output parameter of the energy storage battery;
if the output current determined based on the electric energy output parameters of the energy storage battery is smaller than the preset output current, determining that the state of the energy utilization equipment is a standby state;
and if the output current determined based on the electric energy output parameters of the energy storage battery is greater than or equal to the preset output current, determining that the state of the energy utilization equipment is a working state.
6. The power management system of claim 5, further comprising a third controllable switch in series with the energy storage battery, the third controllable switch being electrically connected to the controller, the third controllable switch further being connected to the energy usage device, the controller further being configured to control the third controllable switch to be in an off state for a preset period of time if the state of the energy usage device is a standby state.
7. The power management system of claim 6, wherein the controller is further configured to determine an output voltage of the energy storage battery based on the electrical energy output parameter of the energy storage battery, and if the determined output voltage of the electrical energy output parameter of the energy storage battery is less than a preset output voltage, the controller is further configured to control the third controllable switch to be in an off state.
8. The power management system of claim 6, further comprising a self-resetting switch in series with the energy storage battery, the third controllable switch in parallel with the self-resetting switch, the third controllable switch and the self-resetting switch respectively electrically connected to the controller, the self-resetting switch configured to control the third controllable switch to conduct via the controller.
9. A power management method, characterized in that the power management system according to any one of claims 1 to 8 is applied, the method comprising:
when the energy utilization equipment is in a non-starting state, the controller controls the first controllable switch to be closed, and the second controllable switch to be opened, so that the energy storage battery charges the capacitor assembly through the first controllable switch;
and when the capacitor assembly reaches a full-power state, the controller controls the first controllable switch to be opened, and the second controllable switch to be closed, so that the capacitor assembly discharges to the energy storage battery through the second controllable switch.
10. The method of claim 9, wherein the power management system is the power management system of claim 2, the method further comprising:
the controller obtains the electrical parameters of the capacitor assembly;
the controller sends an opening instruction to the first controllable switch and sends a closing instruction to the second controllable switch when the charging voltage determined by the electrical parameters of the capacitor assembly exceeds a preset charging voltage;
and when the discharge voltage determined by the electrical parameters of the capacitor assembly exceeds a preset discharge voltage, the controller sends a closing instruction to the first controllable switch and sends an opening instruction to the second controllable switch, so that the energy storage battery charges the capacitor assembly through the first controllable switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310986625.9A CN117118044A (en) | 2023-08-07 | 2023-08-07 | Power supply management system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310986625.9A CN117118044A (en) | 2023-08-07 | 2023-08-07 | Power supply management system and method |
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| CN117118044A true CN117118044A (en) | 2023-11-24 |
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| CN202310986625.9A Pending CN117118044A (en) | 2023-08-07 | 2023-08-07 | Power supply management system and method |
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| CN (1) | CN117118044A (en) |
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2023
- 2023-08-07 CN CN202310986625.9A patent/CN117118044A/en active Pending
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