CN112736304B - Power management system - Google Patents
Power management system Download PDFInfo
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- CN112736304B CN112736304B CN202011591233.5A CN202011591233A CN112736304B CN 112736304 B CN112736304 B CN 112736304B CN 202011591233 A CN202011591233 A CN 202011591233A CN 112736304 B CN112736304 B CN 112736304B
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Secondary Cells (AREA)
Abstract
The present application provides 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 leakage detection module is used for detecting the gas concentration in real time; the main control module is used for judging whether the 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 so that the battery activation module activates the first battery; the power supply module is used for providing electric energy for the main control module and the liquid leakage detection module; the application 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, shortens the preparation time of the high-power equipment by adopting a minimum period periodic or real-time activation method to perform battery activation detection, and is convenient for deployment at any time.
Description
Technical Field
The application 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, negative electrode metal Li of the battery reacts with positive electrode active substance thionyl chloride when the lithium battery contacts, a passivation film formed by a layer of very thin compact crystals is formed on the surface of the negative electrode lithium, and the main component of the passivation film is LiCl. However, the passivation film also limits the lithium ions to flow from the metal surface to the electrolyte, 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 certain advantages as well as certain side effects.
As the storage time increases and the temperature increases, the thickness of the passivation film also gradually increases. However, once the cell begins to discharge, the passivation film breaks down, gradually decreasing in thickness, eventually reaching a plateau value, and the cell also reaches its plateau voltage, commonly referred to as "cell activation".
The existing lithium battery is activated by adopting high-current discharge of peripheral equipment, and for places where the power of the field, ocean and the like cannot reach, the lithium battery cannot be activated in time, 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 operation of the equipment is influenced.
Disclosure of Invention
Aiming at the defects existing in the prior art, the power management system provided by the application solves the problem that the prior art cannot activate the lithium battery in time so as to prolong the deployment preparation time of high-power equipment.
The present application provides 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 leakage detection module is used for detecting the gas concentration in real time; the main control module is connected with the liquid leakage detection module and the battery activation module, and is used for judging whether the 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 so that the battery activation module activates the first battery; the power 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 power supply voltage so that the power supply voltage provides electric energy for the external instrument equipment; the input end of the power-on detection module is connected with the output 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 is further 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 includes: a voltage detection circuit, a protection circuit and an activation circuit; the activation circuit comprises a battery connection end, a voltage detection end and an activation control end, and the battery connection 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 also connected with the main control module, and is used for detecting the 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 can detect 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 activation instruction is sent to the activation circuit, so that the activation circuit can discharge and activate the first battery; 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 includes: 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 external equipment when in use.
Optionally, the activation circuit includes: the voltage detection switch, the activation diode, the activation switch and the discharge resistor; the first end of the voltage detection switch is connected with the positive electrode output end of the first battery when in use, the second end of the voltage detection switch is connected with the anode of the activation 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 activation diode; the first end of the second resistor is connected with the second end of the first resistor; 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 includes: the power supply comprises a second battery, a power socket, a voltage stabilizing 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 stabilizing management chip are connected with the positive electrode output end of the power socket, and the output end of the voltage stabilizing management chip is the output end of the power module and is used for converting the input voltage provided by the second battery into a 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 stabilizing management chip, and the second end of the second capacitor is grounded; 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 is used for realizing signal format conversion so that the battery activation module and the main control module communicate; the storage module is connected with the main control module and used for storing data and 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 application is as follows:
according to the application, the gas concentration of sulfur dioxide is detected in real time through the leakage detection module, so that the main control module judges whether the first battery has leakage according to the gas concentration of the sulfur dioxide, when the gas concentration of the sulfur dioxide exceeds a threshold value, the first battery is judged to have leakage, and an alarm instruction is output to prompt a user to perform leakage treatment 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 discharging activation on the first battery and timely removes a passivation film on the first battery; the power supply module provides electric energy for the main control module in real time.
Compared with the prior art, the application has the following beneficial effects:
according to the application, the main control module performs battery activation detection by adopting a minimum period periodic or real-time activation method according to the time of forming the battery passivation film, so that the preparation time of high-power equipment is shortened, and the equipment is convenient to deploy 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 application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a power management system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of another power management system according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an activation circuit and a protection circuit according to an embodiment of the present application;
fig. 4 is a schematic circuit diagram of a voltage detection switch according to an embodiment of the present application;
fig. 5 is a schematic circuit diagram of a power module according to an embodiment of the application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. The functional units of the same reference numerals in the examples of the present application have the same and similar structures and functions.
Example 1
Fig. 1 is a schematic structural diagram of a power management system according to an embodiment of the present application, and as shown in fig. 1, a power management system 100 according to the present embodiment specifically includes:
the device comprises a main control module 120, a battery activation module 130, a liquid leakage detection module 110 and a power supply module 140;
the leakage detection module 110 is configured to detect a gas concentration in real time;
the main control module 120 is connected to the leakage detection module 110 and also connected to the battery activation module 130, and is configured to determine whether the first battery 200 has leakage according to the gas concentration, send an alarm instruction when the first battery 200 has leakage, and 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 detection module 110, respectively, and is configured to provide electric energy for the main control module 120 and the leaked liquid detection module 110.
In the embodiment of the present application, the first battery 200 includes, but is not limited to, a lithium battery pack and a lithium primary battery pack, and 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, outputs an alarm instruction, and timely prompts a user to perform leakage treatment of the first battery; 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 discharging activation on the first battery and timely removes a passivation film on the first battery; the power supply module provides electric energy for the main control module in real time.
Compared with the prior art, the application has the following beneficial effects:
according to the application, the main control module performs battery activation detection by adopting a minimum period periodic or real-time activation method according to the time of forming the battery passivation film, so that the preparation time of high-power equipment is shortened, and the equipment is convenient to deploy 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 diagram of another power management system according to an embodiment of the present application; 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 power supply voltage so that the power supply voltage provides electric energy for the external instrument equipment;
the input end of the power-on detection module is connected with the output 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 is further 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 workflow of the power management system provided in this embodiment is as follows: when the battery pack is stored, a power switch of a power management system is turned on, and working parameters are set (or the power switch is set before delivery), so that the system works according to a set working period, and the system is in a low-power consumption state during non-working period; during the working period of the night leakage detection period, the main control module is electrified to detect the data of the sulfur dioxide sensor module, whether the concentration of sulfur dioxide exceeds a set threshold value is judged, if yes, sound and light alarms are output, and meanwhile, the RS422 port outputs alarm information data; during the working period of the activation detection period, the main control module controls 12 groups of battery activation modules to electrify, each group of battery activation modules detects the voltage information of 10 groups of parallel battery packs in the battery packs according to a certain sequence, sequentially controls the batteries to discharge and activate the batteries, stores data information, sends the information to the main control module after the whole group of battery activation work is completed, and marks time information by the main control module for storage.
In the power management system of this embodiment, after the power switch and the instrument power switch are turned on during the product work, the power is returned to the power management system and is used as the original power of instrument power, the high voltage is converted into the instrument power demand voltage through the voltage conversion module, the main control module is activated to power up through the power up detection module after the instrument power is powered up simultaneously, and the interruption is generated, the main control module is controlled by entering the current monitoring mode, shielding the activation mode and the night leakage detection mode, the current acquisition module is powered up, the current value and the time information are detected and recorded, and the consumed electric quantity is calculated according to the ampere-hour method.
The voltage conversion module mainly converts a power supply into an instrument power supply, so that the use requirement of the instrument is met; the power supply switching box is mainly used for power supply input, instrument power supply output, alarm driving output, detection presetting, a power switch, a sulfur dioxide sensor, a current sensor, a power switch of a power management system 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 is used for realizing signal format conversion so that the battery activation module and the main control module communicate; the storage module is connected with the main control module and used for storing data and 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: a voltage detection circuit, a protection circuit and an activation circuit; the activation circuit comprises a battery connection end, a voltage detection end and an activation control end, and the battery connection 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 also connected with the main control module, and is used for detecting the 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 can detect 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 activation instruction is sent to the activation circuit, so that the activation circuit can discharge and activate the first battery; 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 judging 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 timely removes a passivation film on the lithium battery; further, the main control module can also receive a real-time activation instruction sent by the upper computer, and trigger the activation circuit to activate the lithium battery in real time; the protection circuit is used for providing line protection for the first battery.
FIG. 3 is a schematic diagram of an activation circuit and a protection circuit according to an embodiment of the present application; as shown in fig. 3, in an embodiment of the present application, the protection circuit 150 includes: positive connection socket 151, negative connection socket 153, positive output socket 152, negative output socket 154, isolation diode, and fuse; the first end of the positive electrode connection socket 151 is connected with the positive electrode output end of the first battery 200 when in use, the anode of the isolation diode is connected with the second end of the positive electrode connection socket 151, the cathode of the isolation 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 connection socket 153 is connected to the negative electrode output end of the first battery 200 when in use, the first end of the fuse is connected to the second end of the negative electrode connection socket 153, the second end of the fuse is connected to the negative electrode output socket 154, and the negative electrode output socket 154 is connected to the external device when in use.
In an embodiment of the present application, the activation circuit 130 includes: a voltage detection switch, an activation diode, an activation switch S11 and a discharge resistor RW; the first end of the voltage detection switch is connected with the positive electrode output end of the first battery 200 when in use, the second end of the voltage detection switch is connected with the anode of the activation diode, and the control end of the voltage detection switch is connected with the main control module 120; 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 RW, and the control end of the activation switch is connected with 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 also connected to the negative output end of the first battery 200.
In another embodiment of the present application, 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 application, 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 application, the first battery 200 may include one or more battery branches, and in this embodiment, including 10 battery branches is taken as an example, the isolation diode includes V1 to V10 in fig. 2, which 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, and thus prevent battery explosion. The fuses in this embodiment include F1 to F10, which effectively prevent current from flowing through the fuse for protection. In this embodiment, the plurality of voltage detection switches includes S1 to S10, and the plurality of active diodes includes V11 to V20, wherein the active diodes are used for isolation to prevent disturbance of the active circuit. Wherein, in the initial state, the voltage detection switch and the activation switch are both in an off state.
When the voltage detection is performed on the lithium first battery 200, the main control module 120 sends a closing instruction to the control end of the S1, so that the S1 is closed, the voltage detection circuit 110 detects the voltage signal output by the battery branch 1, then opens the S1, and then sequentially performs the same operation on the S2-S10, detects the voltage signals of the branches 2-10, and makes the main control module 120 determine 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, performs an activation operation on the battery branch 1, detects an activation load voltage of the branch 1, and opens S11 and S1 after the activation is completed. And then sequentially carrying out the same operation on the S2 to the S10 and the S11, carrying out the activation operation on the branch circuits 2 to 10, and detecting the branch circuit activation load voltage.
Example IV
Fig. 4 is a schematic circuit diagram of a voltage detection switch according to an embodiment of the present application, where, as shown in fig. 4, the voltage detection switch includes:
a first resistor R1, where a first end of the first resistor R1 is connected to the positive output end of the first battery 200 when in use; the source electrode of the first MOS tube Q1 is connected with the first end of the first resistor R1, the grid electrode of the first MOS tube Q1 is connected with the second end of the first resistor R1, and the drain electrode of the first MOS tube Q1 is connected with the anode of the activation 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; the drain electrode of the second MOS transistor Q2 is connected to the second end of the second resistor R2, the source electrode of the second MOS transistor Q2 is grounded, and the gate electrode 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 electrode of the first MOS transistor Q1 is the second end of the voltage detection switch, the gate electrode of the second MOS transistor Q2 is the control end of the voltage detection switch, and the level signal is sent by the main control module 120 to control the on and off of the first MOS transistor Q1 and the second MOS transistor Q2, so as to realize the opening and closing of the voltage detection switch.
In this embodiment, the circuit structure of the activation switch may be the same as or similar to the voltage detection switch, and the control principle is the same as that described above, which will not be repeated here. The voltage detection switch provided by the implementation has the advantages of small volume, 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 application, and as shown in fig. 5, a power module 140 according to the 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 the input end of the power socket CT1 in use, and is configured to provide an input voltage to the power module 140; the input end and the enabling end of the voltage stabilizing management chip U1 are connected to the positive output end of the power socket CT1, and the output end of the voltage stabilizing management chip U1 is the output end of the power module 140, and is used for converting the input voltage provided by the second battery BAT into a stable target voltage.
In this embodiment, the power module 140 further includes: the first end of the first capacitor C1 is connected with the positive output end of the power socket CT1, the second end of the first capacitor C1 is connected with the negative output end of the power socket CT1, and the negative end of the first capacitor C1 is grounded; the positive end of the second capacitor C2 is connected with the output end of the voltage stabilizing management chip U1, and the second end of the second capacitor C2 is grounded; and a first end of the third capacitor C3 is connected with the first end of the second capacitor C2, and a second end of the third capacitor C3 is grounded.
It should be noted that, the input voltage of the second battery BAT is accessed from the power socket CT1, the voltage stabilizing management chip U1 stabilizes the external voltage to DC 3.3V, the voltage is output from the chip pin 5, and the voltage provides power for the main control module 120, where the model of the voltage stabilizing management chip is XC6204. It should be further noted that the first battery and the second battery in this embodiment have different power and performance, where the first battery is a lithium battery or a lithium battery pack that provides a power source for high power devices, and the second battery is a battery that provides a lower voltage for low power chips or sensors.
It should be noted that in this document, relational terms such as "first" and "second" and the like are 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. 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 application. Thus, the present application 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 (8)
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 leakage detection module is used for detecting the gas concentration in real time;
the main control module is connected with the liquid leakage detection module and the battery activation module, and is used for judging whether the 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 so that the battery activation module performs discharging activation on 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;
the battery activation module includes: a voltage detection circuit, a protection circuit and an activation circuit; the activation circuit comprises a battery connection end, a voltage detection end and an activation control end, and the battery connection 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 also connected with the main control module, and is used for detecting the 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 can detect 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 activation instruction is sent to the activation circuit, so that the activation circuit can discharge and activate the first battery; 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;
wherein the activation circuit comprises: the voltage detection switch, the activation diode, the activation switch and the discharge resistor; the first end of the voltage detection switch is connected with the positive electrode output end of the first battery when in use, the second end of the voltage detection switch is connected with the anode of the activation 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.
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 power supply voltage so that the power supply voltage provides electric energy for the external instrument equipment;
the input end of the power-on detection module is connected with the output 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 is further 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 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 external equipment when in use.
4. The power management system of claim 1, 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 activation diode;
the first end of the second resistor is connected with the second end of the first resistor;
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.
5. The power management system of claim 1, wherein the power module comprises:
the power supply comprises a second battery, a power socket, a voltage stabilizing 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 stabilizing management chip are connected with the positive electrode output end of the power socket, and the output end of the voltage stabilizing management chip is the output end of the power module and is used for converting the input voltage provided by the second battery into a 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 stabilizing management chip, and the second end of the second capacitor is grounded;
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.
6. The power management system of claim 3 wherein when the first battery includes a number of battery branches, the protection circuit includes a number of isolation diodes and a number of fuses.
7. The power management system of claim 1, wherein when the first battery includes a number of battery branches, the activation circuit includes a number of voltage detection switches and a number of activation diodes.
8. The power management system of any of claims 1-7, 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 is used for realizing signal format conversion so that the battery activation module and the main control module communicate;
the storage module is connected with the main control module and used for storing data and 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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| DE202023101569U1 (en) | 2023-03-28 | 2023-04-27 | Yousef Ahamd Kareri | Intelligent system for lithium battery power management through heat dissipation model and controlling battery internal leakage |
| CN116465572B (en) * | 2023-06-20 | 2023-12-08 | 宁德时代新能源科技股份有限公司 | Battery detection equipment and method and device for detecting battery |
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