CN112736304A - Power supply management system - Google Patents
Power supply management system Download PDFInfo
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- CN112736304A CN112736304A CN202011591233.5A CN202011591233A CN112736304A CN 112736304 A CN112736304 A CN 112736304A CN 202011591233 A CN202011591233 A CN 202011591233A CN 112736304 A CN112736304 A CN 112736304A
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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
- H01M10/4228—Leak testing of cells or batteries
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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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
- H01M10/4285—Testing apparatus
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a power management system, comprising: the device comprises a main control module, a battery activation module, a liquid leakage detection module and a power supply module; the liquid leakage detection module is used for detecting the gas concentration in real time; the main control module is used for judging whether a first battery has liquid leakage according to the gas concentration, sending an alarm instruction when the first battery has liquid leakage, and sending an activation instruction to the battery activation module periodically or in real time to enable the battery activation module to activate the first battery; the power supply module is used for providing electric energy for the main control module and the leaked liquid detection module; the invention solves the problem that the prior art can not activate the lithium battery in time so as to prolong the deployment preparation time of the high-power equipment, does not need to use peripheral equipment, and carries out battery activation detection by adopting a minimum period regular or real-time activation method, thereby shortening the preparation time of the high-power equipment and facilitating the deployment at any time.
Description
Technical Field
The invention relates to the technical field of battery activation, in particular to a power management system.
Background
The passivation of the lithium/thionyl chloride battery is that after the lithium battery is stored for a long time, the negative metal Li of the battery reacts with the positive active material thionyl chloride, a thin passivation film composed of compact crystals is formed on the surface of the negative lithium, the main component of the passivation film is LiCl, and the passivation film effectively prevents the further chemical reaction of the electrolyte thionyl chloride and the lithium metal, so that the lithium thionyl chloride battery has good storage performance. However, the passivation film also limits the lithium ions from flowing to the electrolyte from the metal surface, so that the initial value of the internal resistance of the battery is high, and the initial load voltage is low. Thus, the presence of passivation has both certain advantages and certain side effects.
The thickness of the passivation film gradually increases as the storage time is prolonged and the temperature is increased. However, once the cell begins to discharge, the passive film collapses, gradually reducing in thickness, and eventually reaching a stable value, the cell also reaches its plateau voltage, commonly referred to as "cell activation".
The conventional lithium battery activation is activated by high-current discharge of peripheral equipment, and the lithium battery cannot be activated in time in places where manpower cannot reach such as the field and the ocean, so that the problem that the high-power equipment cannot be driven in time due to output voltage lag occurs, the deployment preparation time of the high-power equipment is prolonged, and the normal work of the equipment is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the power management system provided by the invention solves the problem that the prior art cannot activate the lithium battery in time so as to prolong the deployment preparation time of the high-power equipment.
The invention provides a power management system, comprising: the device comprises a main control module, a battery activation module, a liquid leakage detection module and a power supply module; the liquid leakage detection module is used for detecting the gas concentration in real time; the main control module is connected with the leakage detection module and the battery activation module, and is used for judging whether leakage exists in the first battery according to the gas concentration, sending an alarm instruction when leakage exists in the first battery, and sending an activation instruction to the battery activation module periodically or in real time to enable the battery activation module to activate the first battery; the power supply module is respectively connected with the main control module and the leaked liquid detection module and is used for providing electric energy for the main control module and the leaked liquid detection module.
Optionally, the system further comprises: the input end of the voltage conversion module is connected with the output end of the first battery when in use, and the output end of the voltage conversion module is connected with external instrument equipment when in use, and is used for converting the output voltage of the first battery into a power supply voltage so that the power supply voltage provides electric energy for the external instrument equipment; the power-on detection module is connected with the input end of the voltage conversion module and the output end of the power-on detection module is connected with the main control module, and is used for sending a power-on detection signal to the main control module when the voltage conversion module is detected to output the power supply voltage, so that the main control module outputs a current detection instruction and an activation shielding instruction; the current acquisition module is connected with the output end of the first battery, and the current acquisition module is also connected with the main control module and used for acquiring the output current of the first battery according to the current detection instruction, so that the main control module acquires the residual capacity of the first battery according to the output current.
Optionally, the battery activation module comprises: the protection circuit comprises a voltage detection circuit, a protection circuit and an activation circuit; the activation circuit comprises a battery connecting end, a voltage detection end and an activation control end, and the battery connecting end is connected with the output end of the first battery when in use; the voltage detection circuit is connected with the voltage detection end and the main control module, and is used for detecting a current voltage signal of the voltage detection end according to a voltage detection instruction sent by the main control module periodically or in real time, so that the main control module detects whether the first battery is in a passivation state currently according to the current voltage signal, and when the first battery is detected to be in the passivation state currently, the voltage detection circuit sends the activation instruction to the activation circuit, so that the activation circuit performs discharge activation on the first battery; and the protection circuit is connected with the output end of the first battery when in use and is used for providing line protection for the first battery.
Optionally, the protection circuit comprises: the device comprises an anode connecting socket, a cathode connecting socket, an anode output socket, a cathode output socket, an isolation diode and a fuse; the first end of the positive electrode connecting socket is connected with the positive electrode output end of the first battery when in use, the anode of the isolating diode is connected with the second end of the positive electrode connecting socket, the cathode of the isolating diode is connected with the positive electrode output socket, and the positive electrode output socket is connected with external equipment when in use; the first end of the negative electrode connecting socket is connected with the negative electrode output end of the first battery when in use, the first end of the fuse is connected with the second end of the negative electrode connecting socket, the second end of the fuse is connected with the negative electrode output socket, and the negative electrode output socket is connected with the external equipment when in use.
Optionally, the activation circuit comprises: the device comprises a voltage detection switch, an activation diode, an activation switch and a discharge resistor; when the voltage detection switch is used, the first end of the voltage detection switch is connected with the anode output end of the first battery, the second end of the voltage detection switch is connected with the anode of the active diode, and the control end of the voltage detection switch is connected with the main control module; the first end of the activation switch is connected with the cathode of the activation diode, the second end of the activation switch is connected with the first end of the discharge resistor, and the control end of the activation switch is connected with the main control module; the second end of the discharge resistor is grounded, and the second end of the discharge resistor is also connected with the negative electrode output end of the first battery.
Optionally, the voltage detection switch includes: the first end of the first resistor is connected with the positive electrode output end of the first battery when in use; the source electrode of the first MOS tube is connected with the first end of the first resistor, the grid electrode of the first MOS tube is connected with the second end of the first resistor, and the drain electrode of the first MOS tube is connected with the anode of the active diode; a first end of the second resistor is connected with a second end of the first resistor; and the drain electrode of the second MOS tube is connected with the second end of the second resistor, the source electrode of the second MOS tube is grounded, and the grid electrode of the second MOS tube is connected with the main control module.
Optionally, the power module comprises: the power supply comprises a second battery, a power socket, a voltage stabilization management chip, a first capacitor, a second capacitor and a third capacitor; the second battery is connected with the input end of the power socket and is used for providing input voltage for the power module; the input end and the enabling end of the voltage stabilization management chip are connected with the positive electrode output end of the power socket, and the output end of the voltage stabilization management chip is the output end of the power module and is used for converting the input voltage provided by the second battery into stable target voltage; the first end of the first capacitor is connected with the positive output end of the power socket, the second end of the first capacitor is connected with the negative output end of the power socket, and the second end of the first capacitor is grounded; the first end of the second capacitor is connected with the output end of the voltage stabilization management chip, and the second end of the second capacitor is grounded; and the first end of the third capacitor is connected with the first end of the second capacitor, and the second end of the third capacitor is grounded.
Optionally, when the first battery includes a plurality of battery branches, the protection circuit includes a plurality of isolation diodes and a plurality of fuses.
Optionally, when the first battery includes a plurality of battery branches, the activation circuit includes a plurality of voltage detection switches and a plurality of activation diodes.
Optionally, the system further comprises: the first end of the CAN driving circuit is connected with the main control module, and the second end of the CAN driving circuit is connected with the battery activation module and used for realizing the conversion of signal formats so that the battery activation module communicates with the main control module; the storage module is connected with the main control module and used for storing the data and the logs sent by the main control module; and the display module is connected with the main control module and is used for displaying the data and the log.
The technical principle of the invention is as follows:
the leakage detection module is used for detecting the gas concentration of sulfur dioxide in real time, so that the main control module judges whether the first battery has the leakage phenomenon according to the gas concentration of the sulfur dioxide, and when the gas concentration of the sulfur dioxide exceeds a threshold value, the first battery is judged to have the leakage, an alarm instruction is output, and a user is reminded of carrying out leakage treatment on the first battery in time; the main control module sends an activation instruction to the battery activation module according to a preset period or in real time, so that the battery activation module performs discharge activation on the first battery, and a passivation film on the first battery is removed in time; the power supply module provides electric energy for the main control module in real time.
Compared with the prior art, the invention has the following beneficial effects:
the main control module carries out battery activation detection by adopting a minimum period regular or real-time activation method according to the time of forming the battery passivation film, thereby shortening the preparation time of high-power equipment and facilitating the deployment at any time; meanwhile, the safety of the battery during storage and use is ensured through the leakage monitoring module.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a power management system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another power management system according to an embodiment of the present invention;
fig. 3 is a circuit schematic diagram of an activation circuit and a protection circuit according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a voltage detection switch according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a power module according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Like numbered functional units in the examples of the present invention have the same and similar structure and function.
Example one
Fig. 1 is a schematic structural diagram of a power management system according to an embodiment of the present invention, and as shown in fig. 1, a power management system 100 according to this embodiment specifically includes:
a main control module 120, a battery activation module 130, a leakage detection module 110 and a power supply module 140;
the liquid leakage detection module 110 is used for detecting the gas concentration in real time;
the main control module 120 is connected to the leakage detection module 110, and further connected to the battery activation module 130, and is configured to determine whether leakage exists in the first battery 200 according to the gas concentration, send an alarm instruction when leakage exists in the first battery 200, and further send an activation instruction to the battery activation module 130 periodically or in real time, so that the battery activation module 130 activates the first battery 200;
the power module 140 is connected to the main control module 120 and the leaked liquid detecting module 110, respectively, and is configured to provide electric energy for the main control module 120 and the leaked liquid detecting module 110.
In the embodiment of the present invention, the first battery 200 includes, but is not limited to, a lithium battery pack and a lithium primary battery pack, the leakage detection module detects the gas concentration of sulfur dioxide in real time, so that the main control module determines whether the first battery has a leakage phenomenon according to the gas concentration of sulfur dioxide, and when the gas concentration of sulfur dioxide exceeds a threshold value, it determines that the first battery has a leakage, and outputs an alarm instruction to prompt a user to perform leakage processing of the first battery in time; the main control module sends an activation instruction to the battery activation module according to a preset period or in real time, so that the battery activation module performs discharge activation on the first battery, and a passivation film on the first battery is removed in time; the power supply module provides electric energy for the main control module in real time.
Compared with the prior art, the invention has the following beneficial effects:
the main control module carries out battery activation detection by adopting a minimum period regular or real-time activation method according to the time of forming the battery passivation film, thereby shortening the preparation time of high-power equipment and facilitating the deployment at any time; meanwhile, the safety of the battery during storage and use is ensured through the leakage monitoring module.
Example two
Fig. 2 is a schematic structural diagram of another power management system according to an embodiment of the present invention; as shown in fig. 2, the system further includes:
the input end of the voltage conversion module is connected with the output end of the first battery when in use, and the output end of the voltage conversion module is connected with external instrument equipment when in use, and is used for converting the output voltage of the first battery into a power supply voltage so that the power supply voltage provides electric energy for the external instrument equipment;
the power-on detection module is connected with the input end of the voltage conversion module and the output end of the power-on detection module is connected with the main control module, and is used for sending a power-on detection signal to the main control module when the voltage conversion module is detected to output the power supply voltage, so that the main control module outputs a current detection instruction and an activation shielding instruction;
the current acquisition module is connected with the output end of the first battery, and the current acquisition module is also connected with the main control module and used for acquiring the output current of the first battery according to the current detection instruction, so that the main control module acquires the residual capacity of the first battery according to the output current.
It should be noted that the power management system provided in this embodiment has the following working procedures: during the storage period of the battery pack, a power switch of the power management system is turned on, working parameters are set (or the setting is finished before leaving the factory), the system works according to a set working period, and the system is in a low power consumption state during the non-working period; during the working period of the detection period of the leakage night, the main control module is electrified to detect the data of the sulfur dioxide sensor module, judges whether the concentration of sulfur dioxide exceeds a set threshold value, and outputs sound and light alarm if the concentration of sulfur dioxide exceeds the set threshold value, and simultaneously outputs alarm information data through an RS422 port; during the activation detection period, the main control module controls 12 groups of battery activation modules to be powered on, each group of battery activation modules detects the voltage information of 10 parallel battery groups in the battery group according to a certain sequence, controls the batteries to discharge and activate the batteries in sequence, stores data information, sends the information to the main control module after the activation of the whole group of batteries is completed, and marks time information by the main control module for storage.
In the working period of a product, after a power supply switch and an instrument power supply switch are turned on, a power supply is led back to the power supply management system to serve as an original power supply of the instrument power supply, high voltage is converted into required voltage of the instrument power supply through a voltage conversion module, meanwhile, the instrument power supply is electrified and then activates a main control module to be electrified through an electrifying detection module, interruption is generated, the main control module enters a current monitoring mode, shields the activation mode and a leakage detection mode, controls the electrifying of a current collection module, detects and records current value and time information, and calculates consumed electric quantity according to an ampere-hour method.
The voltage conversion module is mainly used for converting a power supply into an instrument power supply so as to meet the use requirement of the instrument; the power supply adapter box is mainly used for requirements of power supply input, instrument power supply output, alarm driving output, detection presetting, a power supply switch, a sulfur dioxide sensor, a current sensor, a power supply management system power supply switch and the like.
In this embodiment, the system further includes: the first end of the CAN driving circuit is connected with the main control module, and the second end of the CAN driving circuit is connected with the battery activation module and used for realizing the conversion of signal formats so that the battery activation module communicates with the main control module; the storage module is connected with the main control module and used for storing the data and the logs sent by the main control module; and the display module is connected with the main control module and is used for displaying the data and the log.
EXAMPLE III
In this embodiment, the battery activation module includes: the protection circuit comprises a voltage detection circuit, a protection circuit and an activation circuit; the activation circuit comprises a battery connecting end, a voltage detection end and an activation control end, and the battery connecting end is connected with the output end of the first battery when in use; the voltage detection circuit is connected with the voltage detection end and the main control module, and is used for detecting a current voltage signal of the voltage detection end according to a voltage detection instruction sent by the main control module periodically or in real time, so that the main control module detects whether the first battery is in a passivation state currently according to the current voltage signal, and when the first battery is detected to be in the passivation state currently, the voltage detection circuit sends the activation instruction to the activation circuit, so that the activation circuit performs discharge activation on the first battery; and the protection circuit is connected with the output end of the first battery when in use and is used for providing line protection for the first battery.
It should be noted that, the main control module 120 sends a voltage detection instruction to the voltage detection circuit according to a preset period, so that the voltage detection circuit detects a current voltage signal of the lithium battery, the main control module detects whether the lithium battery is currently in a passivation state according to the current voltage signal, and when it is determined that the lithium battery is currently in the passivation state, the main control module sends an activation instruction to the activation circuit, so that the activation circuit performs discharge activation on the lithium battery, and removes a passivation film on the lithium battery in time; furthermore, the main control module can also receive a real-time activation instruction sent by an upper computer, and trigger the activation circuit to activate the lithium battery in real time; wherein the protection circuit is used for providing line protection for the first battery.
Fig. 3 is a circuit schematic diagram of an activation circuit and a protection circuit according to an embodiment of the present invention; as shown in fig. 3, in the embodiment of the present invention, the protection circuit 150 includes: a positive connection socket 151, a negative connection socket 153, a positive output socket 152, a negative output socket 154, an isolation diode and a fuse; the first end of the positive electrode connecting socket 151 is connected with the positive electrode output end of the first battery 200 when in use, the anode of the isolating diode is connected with the second end of the positive electrode connecting socket 151, the cathode of the isolating diode is connected with the positive electrode output socket 152, and the positive electrode output socket 152 is connected with an external device when in use; the first end of the negative electrode connecting socket 153 is connected with the negative electrode output end of the first battery 200 when in use, the first end of the fuse is connected with the second end of the negative electrode connecting socket 153, the second end of the fuse is connected with the negative electrode output socket 154, and the negative electrode output socket 154 is connected with the external equipment when in use.
In an embodiment of the present invention, the activation circuit 130 includes: a voltage detection switch, an activation diode, an activation switch S11, and a discharge resistor RW; when in use, the first end of the voltage detection switch is connected with the anode output end of the first battery 200, the second end of the voltage detection switch is connected with the anode of the active diode, and the control end of the voltage detection switch is connected with the main control module 120; a first end of the activation switch is connected to a cathode of the activation diode, a second end of the activation switch is connected to a first end of the discharge resistor RW, and a control end of the activation switch is connected to the main control module 120; the second end of the discharging resistor RW is grounded, and the second end of the discharging resistor RW is further connected to the negative output terminal of the first battery 200.
In another embodiment of the present invention, when the first battery 200 includes a plurality of battery branches, the protection circuit 150 includes a plurality of isolation diodes and a plurality of fuses.
In another embodiment of the present invention, when the first battery 200 includes a plurality of battery branches, the activation circuit 130 includes a plurality of voltage detection switches and a plurality of activation diodes.
It should be noted that, in the present invention, the first battery 200 may include one or more battery branches, and in this embodiment, for example, 10 battery branches are included, and the isolation diode includes V1 to V10 in fig. 2, and is mainly used for isolating each battery branch, so as to avoid the problem of mutual charging between the battery branches due to voltage difference, thereby preventing battery explosion. The fuses in the present embodiment include F1 to F10, which effectively protect against over-discharge of current. In the present embodiment, the plurality of voltage detection switches include S1 to S10, and the plurality of activation diodes include V11 to V20, wherein the activation diodes are used for isolation and for preventing the activation circuit from being disturbed. Wherein, in the initial state, the voltage detection switch and the activation switch are both in an off state.
When the voltage of the first lithium battery 200 is detected, the main control module 120 sends a closing instruction to the control terminal of S1 to close S1, the voltage detection circuit 110 disconnects S1 after detecting the voltage signal output by the battery branch 1, and then performs the same operation on S2 to S10 in sequence to detect the voltage signals of the branches 2 to 10, so that the main control module 120 determines whether the lithium battery is in a passivation state according to the voltage signal of each battery branch.
When the first battery 200 is activated, the main control module 120 closes the switch S1 and the activation switch S11, activates the battery branch 1, detects the activation load voltage of the branch 1, and disconnects S11 and S1 after activation. And then performing the same operation on S2-S10 and S11 in sequence, performing activation operation on the branch circuits 2-10, and detecting the branch circuit activation load voltage.
Example four
Fig. 4 is a circuit schematic diagram of a voltage detection switch according to an embodiment of the present invention, and as shown in fig. 4, the voltage detection switch includes:
a first resistor R1, a first terminal of the first resistor R1 being connected to the positive output terminal of the first battery 200 in use; a first MOS transistor Q1, a source of the first MOS transistor Q1 is connected to a first end of the first resistor R1, a gate of the first MOS transistor Q1 is connected to a second end of the first resistor R1, and a drain of the first MOS transistor Q1 is connected to an anode of the active diode; a second resistor R2, wherein a first end of the second resistor R2 is connected with a second end of the first resistor R1; a second MOS transistor Q2, a drain of the second MOS transistor Q2 is connected to the second end of the second resistor R2, a source of the second MOS transistor Q2 is grounded, and a gate of the second MOS transistor Q2 is connected to the main control module 120.
It should be noted that, the first end of the first resistor R1 is the first end of the voltage detection switch, the drain of the first MOS transistor Q1 is the second end of the voltage detection switch, the gate of the second MOS transistor Q2 is the control end of the voltage detection switch, and the main control module 120 sends a level signal to control the on and off of the first MOS transistor Q1 and the second MOS transistor Q2, so as to achieve the on and off of the voltage detection switch.
In this embodiment, the circuit structure of the activation switch may be the same as or similar to that of the voltage detection switch, and the control principle is the same as that described above, and therefore, the detailed description thereof is omitted. It should be noted that the voltage detection switch provided by the present embodiment has the advantages of small size, low loss, and the like.
EXAMPLE five
Fig. 5 is a schematic circuit diagram of a power module according to an embodiment of the present invention, and as shown in fig. 5, the power module 140 provided in this embodiment specifically includes: a second battery BAT, a power socket CT1 and a voltage-stabilizing management chip U1; the second battery BAT is connected to an input terminal of the power socket CT1 when in use, and is configured to provide an input voltage to the power module 140; the input end and the enable end of the voltage stabilization management chip U1 are connected to the positive output end of the power socket CT1, and the output end of the voltage stabilization management chip U1 is the output end of the power module 140, and is configured to convert the input voltage provided by the second battery BAT into a stable target voltage.
In this embodiment, the power module 140 further includes: a first capacitor C1, a first terminal of the first capacitor C1 is connected to the positive output terminal of the power socket CT1, a second terminal of the first capacitor C1 is connected to the negative output terminal of the power socket CT1, and the negative terminal of the first capacitor C1 is grounded; a positive terminal of the second capacitor C2 is connected to the output terminal of the voltage stabilization management chip U1, and a second terminal of the second capacitor C2 is grounded; a third capacitor C3, wherein a first terminal of the third capacitor C3 is connected to a first terminal of the second capacitor C2, and a second terminal of the third capacitor C3 is grounded.
It should be noted that the input voltage of the second battery BAT is connected from the power socket CT1, the voltage regulation management chip U1 regulates the external voltage to DC 3.3V, and the voltage is output from the chip pin 5 and supplies power to the main control module 120, wherein the model of the voltage regulation management chip is XC 6204. It is further noted that the first battery and the second battery in this embodiment have different power and performance, wherein the first battery is a lithium battery or a lithium battery pack that provides power for high power devices, and the second battery is a battery that provides a lower voltage for low power chips or sensors.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A power management system, the system comprising:
the device comprises a main control module, a battery activation module, a liquid leakage detection module and a power supply module;
the liquid leakage detection module is used for detecting the gas concentration in real time;
the main control module is connected with the leakage detection module and the battery activation module, and is used for judging whether leakage exists in the first battery according to the gas concentration, sending an alarm instruction when leakage exists in the first battery, and sending an activation instruction to the battery activation module periodically or in real time to enable the battery activation module to activate the first battery;
the power supply module is respectively connected with the main control module and the leaked liquid detection module and is used for providing electric energy for the main control module and the leaked liquid detection module.
2. The power management system of claim 1, wherein the system further comprises:
the input end of the voltage conversion module is connected with the output end of the first battery when in use, and the output end of the voltage conversion module is connected with external instrument equipment when in use, and is used for converting the output voltage of the first battery into a power supply voltage so that the power supply voltage provides electric energy for the external instrument equipment;
the power-on detection module is connected with the input end of the voltage conversion module and the output end of the power-on detection module is connected with the main control module, and is used for sending a power-on detection signal to the main control module when the voltage conversion module is detected to output the power supply voltage, so that the main control module outputs a current detection instruction and an activation shielding instruction;
the current acquisition module is connected with the output end of the first battery, and the current acquisition module is also connected with the main control module and used for acquiring the output current of the first battery according to the current detection instruction, so that the main control module acquires the residual capacity of the first battery according to the output current.
3. The power management system of claim 1, wherein the battery activation module comprises:
the protection circuit comprises a voltage detection circuit, a protection circuit and an activation circuit;
the activation circuit comprises a battery connecting end, a voltage detection end and an activation control end, and the battery connecting end is connected with the output end of the first battery when in use;
the voltage detection circuit is connected with the voltage detection end and the main control module, and is used for detecting a current voltage signal of the voltage detection end according to a voltage detection instruction sent by the main control module periodically or in real time, so that the main control module detects whether the first battery is in a passivation state currently according to the current voltage signal, and when the first battery is detected to be in the passivation state currently, the voltage detection circuit sends the activation instruction to the activation circuit, so that the activation circuit performs discharge activation on the first battery;
and the protection circuit is connected with the output end of the first battery when in use and is used for providing line protection for the first battery.
4. The power management system of claim 3, wherein the protection circuit comprises:
the device comprises an anode connecting socket, a cathode connecting socket, an anode output socket, a cathode output socket, an isolation diode and a fuse;
the first end of the positive electrode connecting socket is connected with the positive electrode output end of the first battery when in use, the anode of the isolating diode is connected with the second end of the positive electrode connecting socket, the cathode of the isolating diode is connected with the positive electrode output socket, and the positive electrode output socket is connected with external equipment when in use;
the first end of the negative electrode connecting socket is connected with the negative electrode output end of the first battery when in use, the first end of the fuse is connected with the second end of the negative electrode connecting socket, the second end of the fuse is connected with the negative electrode output socket, and the negative electrode output socket is connected with the external equipment when in use.
5. The power management system of claim 3, wherein the activation circuit comprises:
the device comprises a voltage detection switch, an activation diode, an activation switch and a discharge resistor;
when the voltage detection switch is used, the first end of the voltage detection switch is connected with the anode output end of the first battery, the second end of the voltage detection switch is connected with the anode of the active diode, and the control end of the voltage detection switch is connected with the main control module;
the first end of the activation switch is connected with the cathode of the activation diode, the second end of the activation switch is connected with the first end of the discharge resistor, and the control end of the activation switch is connected with the main control module;
the second end of the discharge resistor is grounded, and the second end of the discharge resistor is also connected with the negative electrode output end of the first battery.
6. The power management system of claim 5, wherein the voltage detection switch comprises:
the first end of the first resistor is connected with the positive electrode output end of the first battery when in use;
the source electrode of the first MOS tube is connected with the first end of the first resistor, the grid electrode of the first MOS tube is connected with the second end of the first resistor, and the drain electrode of the first MOS tube is connected with the anode of the active diode;
a first end of the second resistor is connected with a second end of the first resistor;
and the drain electrode of the second MOS tube is connected with the second end of the second resistor, the source electrode of the second MOS tube is grounded, and the grid electrode of the second MOS tube is connected with the main control module.
7. The power management system of claim 1, wherein the power module comprises:
the power supply comprises a second battery, a power socket, a voltage stabilization management chip, a first capacitor, a second capacitor and a third capacitor;
the second battery is connected with the input end of the power socket and is used for providing input voltage for the power module;
the input end and the enabling end of the voltage stabilization management chip are connected with the positive electrode output end of the power socket, and the output end of the voltage stabilization management chip is the output end of the power module and is used for converting the input voltage provided by the second battery into stable target voltage;
the first end of the first capacitor is connected with the positive output end of the power socket, the second end of the first capacitor is connected with the negative output end of the power socket, and the second end of the first capacitor is grounded;
the first end of the second capacitor is connected with the output end of the voltage stabilization management chip, and the second end of the second capacitor is grounded;
and the first end of the third capacitor is connected with the first end of the second capacitor, and the second end of the third capacitor is grounded.
8. The power management system of claim 4, wherein when the first battery comprises a plurality of battery branches, the protection circuit comprises a plurality of isolation diodes and a plurality of fuses.
9. The power management system of claim 5, wherein when the first battery comprises a plurality of battery branches, the activation circuit comprises a plurality of voltage detection switches and a plurality of activation diodes.
10. The power management system of any of claims 1-9, wherein the system further comprises:
the first end of the CAN driving circuit is connected with the main control module, and the second end of the CAN driving circuit is connected with the battery activation module and used for realizing the conversion of signal formats so that the battery activation module communicates with the main control module;
the storage module is connected with the main control module and used for storing the data and the logs sent by the main control module;
and the display module is connected with the main control module and is used for displaying the data and the log.
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