CN114726022A - Lithium battery circuit, device and method for simulating dry battery discharge - Google Patents
Lithium battery circuit, device and method for simulating dry battery discharge Download PDFInfo
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- CN114726022A CN114726022A CN202210200743.8A CN202210200743A CN114726022A CN 114726022 A CN114726022 A CN 114726022A CN 202210200743 A CN202210200743 A CN 202210200743A CN 114726022 A CN114726022 A CN 114726022A
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- discharge
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00308—Overvoltage protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a lithium battery circuit, a device and a method for simulating dry battery discharge, which are arranged in the lithium battery circuit, wherein the circuit comprises a charge and discharge management unit for controlling the charge and discharge of a lithium battery unit; the circuit also comprises a DC-DC voltage reduction unit which is electrically connected with the charge and discharge management unit; the DC-DC voltage reduction unit is used for controlling voltage during discharging; and the MCU main control unit is electrically connected with the DC-DC voltage reduction unit and is used for controlling and changing the duty ratio signal. The lithium battery circuit, the device and the method for simulating the dry battery discharge adopt the MCU main control unit arranged in the management circuit and the duty ratio of the MCU main control unit to reduce voltage and regulate voltage for output, thereby simulating the output curve of the dry battery, realizing the safety protection on electric equipment, namely a load, and prolonging the service life of the electric equipment.
Description
Technical Field
The invention relates to a lithium battery device implementation scheme, in particular to improvement of a lithium battery circuit, a device and a method for simulating dry battery discharge.
Background
The prior art lithium battery has a smooth and stable discharge curve, and the discharge is usually a stable full-voltage discharge, and in the case of a substantial discharge, the discharge is rapidly discharged, and the voltage curve is nearly dropped vertically. While the general dry battery discharge is that the new battery has the highest voltage release, as the battery capacity decreases (actually, the internal resistance of the battery increases), the external output voltage becomes lower and lower until the normal power supply is not performed, so that the equipment can normally operate. Therefore, the power supply method of the lithium battery is actually more excellent than the power supply method of the dry battery.
However, in many electrical devices, such as flashlights, the life of the design is based on the discharge curve of the dry cell, i.e., the voltage output drops over time. Because the constant voltage output of the lithium battery is very flat and straight in discharge curve, the cliff type voltage drop is basically realized until the electric quantity is exhausted, and the full voltage power supply similar to a new battery is always realized before the power supply, so that the electric equipment powered by the lithium battery is always in a full voltage working state, the electric equipment is extremely easy to damage, the service life is reduced, and the consumer can consider that the product quality of the electric equipment has problems, so that the complaint on the electric equipment is caused.
In the existing electric equipment, such as a flashlight and the like, especially in foreign markets, the generation of the electric equipment is slow, and when the electric equipment is powered by a lithium battery, the electric equipment is generally considered to be in an optimal output voltage state (full voltage output) of a dry battery, so that the electric equipment is always in a full power output state, and an operating circuit of the electric equipment, such as a led lamp or other processing circuits, can be always in a highest load operating state, so that the electric equipment is easy to malfunction and damage. In addition, due to the characteristics of a discharge curve of the lithium battery, the lithium battery cannot be known in advance when the electric quantity of the lithium battery is exhausted, for example, a fingerprint lock is in an outdoor state when the lithium battery is in no-power state, so that the electric quantity capacity state of the lithium battery cannot be estimated at the working time stopping time point.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The invention aims to provide a lithium battery circuit, a device and a method for simulating the discharge of a dry battery, and provides the lithium battery circuit, the device and the method which can prolong the service life of electric equipment aiming at the defects of the prior art.
The technical scheme of the invention is as follows:
a lithium battery circuit for simulating dry battery discharge, which is applied to a circuit board of a lithium battery device, wherein the circuit comprises: the charging and discharging management unit, the MCU main control unit and the DC-DC voltage reduction unit; the charge and discharge management unit is used for carrying out undervoltage/overvoltage/overcurrent detection protection control on the lithium battery device; the MCU main control unit is used for adjusting output voltage through output duty ratio after calculating capacity by detecting battery voltage in real time in a discharge mode; the duty ratio signal is controlled to change, and the duty ratio of the output voltage of the circuit is gradually reduced according to a preset simulated dry battery discharge curve.
The lithium battery circuit simulating dry battery discharge is characterized in that the charge and discharge management unit adopts a linear charging chip and sets a preset current limiting value during charging.
The lithium battery circuit simulating the dry battery discharge is characterized in that a protection circuit unit is further arranged in the circuit and used for protecting the charge and discharge of the lithium battery unit.
The lithium battery circuit for simulating the dry battery discharge is characterized in that the circuit is also provided with a detection load which is connected or not, is in a low power consumption state before being connected, and wakes up the DC-DC voltage reduction unit after being connected.
The utility model provides a simulation dry battery lithium battery device that discharges, its setting is including the lithium cell who is used for the storage electric quantity, and to the circuit board that the lithium cell carries out charge-discharge management, be provided with lithium cell circuit on the circuit board, wherein, the circuit includes: the charging and discharging management unit, the MCU main control unit and the DC-DC voltage reduction unit; the charge and discharge management unit is used for carrying out undervoltage/overvoltage/overcurrent detection protection control on the lithium battery device; the MCU main control unit is used for adjusting output voltage through output duty ratio after calculating capacity by detecting battery voltage in real time in a discharge mode; the duty ratio signal is controlled to change, and the duty ratio of the output voltage of the circuit is gradually reduced according to a preset simulated dry battery discharge curve.
The lithium battery device for simulating the dry battery discharge is characterized in that the charge and discharge management unit adopts a linear charging chip and sets a preset current limiting value during charging.
The lithium battery device for simulating the dry battery discharge is characterized in that a protection circuit unit is further arranged in the circuit and used for protecting the charge and discharge of the lithium battery unit.
The lithium battery device for simulating the dry battery discharge is characterized in that the circuit is also provided with a detection unit for detecting whether a load is connected or not, and the circuit is in a low power consumption state before connection and awakens the DC-DC voltage reduction unit after connection.
A lithium battery circuit realizing method adopting any simulated dry battery to discharge comprises the following steps:
A. the charging and discharging management unit detects whether a load is accessed, and if the load is not accessed, the charging and discharging management unit enters a low power consumption mode;
B. if the charging and discharging management unit detects that a load is connected, the DC-DC voltage reduction unit is awakened to output current; the DC-DC voltage reduction unit changes the voltage output of the DC-DC voltage reduction unit according to the duty ratio signal of the MCU main control unit which is controlled to change;
the controlled change of the duty ratio signal is based on the detection of the discharge current of the lithium battery and the calculation of the capacity of the lithium battery, and simulates the discharge curve of a dry battery, so that the duty ratio signal of the DC-DC voltage reduction circuit is gradually reduced to reduce the voltage for discharging.
In the step B, the charging and discharging management unit wakes up the DC-DC voltage reduction unit at regular time and adjusts the output of the voltage.
According to the lithium battery circuit, the device and the method for simulating the discharge of the dry battery, the MCU main control unit arranged in the lithium battery circuit and the DC-DC voltage reduction unit electrically connected with the MCU main control unit are adopted to reduce the voltage and regulate the voltage according to the preset discharge curve of the dry battery through the duty ratio of the duty ratio signal, so that the output curve of the dry battery is simulated, the safety protection of electric equipment, namely a load is realized, and the service life of the electric equipment is prolonged.
Drawings
Fig. 1 is a schematic circuit diagram of a lithium battery circuit, device and method for simulating battery discharge according to a preferred embodiment of the present invention.
Fig. 2 is a schematic circuit diagram of a lithium battery circuit, device and method for simulating battery discharge according to a preferred embodiment of the present invention.
Fig. 3 is a schematic diagram of a dry cell discharge curve of a lithium battery circuit, device and method for simulating the discharge of a dry cell according to a preferred embodiment of the invention.
Detailed Description
The following describes in detail preferred embodiments of the present invention.
According to the preferred embodiment of the lithium battery circuit, the device and the method for simulating the dry battery discharge, the output voltage can be controlled and set in the management circuit of the lithium battery, particularly for the common cylindrical lithium battery, so that better protection of electric equipment is realized; according to the discharge curve of the dry cell, a general discharge curve can be adopted, the discharge curve of the dry cell is different from that of the lithium battery, and different discharge curves of the dry cell can be different, such as the slope of the downward slope is different from each other, but after all, the discharge curve of the dry cell is different from the straight and abrupt falling of the lithium battery, so that in the practical embodiment, the discharge curve of the dry cell adopted in the product of the invention can be adjusted in advance, for example, the voltage output is slightly higher in the early stage, and the slow falling is controlled, but not necessarily a linear falling curve (straight line), as shown in fig. 3, aiming at different discharge modes of the same lithium battery, the three curves (a), (b) and (c) are respectively aiming at the discharge curves adopting the capacities of three dry batteries of 500mA, 1000mA and 1500mA, and the vertical axes are current (mA) and voltage (V), the horizontal axis represents time (minutes), and the discharge time with a lower discharge current is longer, whereas it is shorter. The discharge curve is preset in a circuit of the lithium battery device and is used for discharging according to the curve of lithium battery discharge, so that dry battery discharge is simulated; the dry battery discharge curve can be adjusted according to statistical data or manually, and only the full discharge mode of the lithium battery needs to be overcome, so that the power utilization safety of electric equipment is ensured. Or a logic judgment circuit can be adopted, and a corresponding discharge curve is selected and adopted according to the requirement of the discharge current.
In the preferred embodiment of the lithium battery circuit, the device and the method for simulating the dry battery discharge, the voltage (capacitance) condition in the lithium battery can be sensed, and the discharge curve of the simulated dry battery is correspondingly adjusted to output the voltage after adjustment. The circuit is provided with: a charge and discharge management unit 101, an MCU master control unit 103, and a DC-DC voltage reduction unit 102, as shown in FIG. 2; the mode of adjustment can be through MCU main control unit according to the regulation mode that sets up in advance, through adjusting output voltage's duty cycle to guarantee output behind the voltage adjustment of DC-DC voltage reduction unit, discharge the curve of discharging of lithium cell according to the mode of simulation dry battery, with current consumer more adaptation, can prolong the life of equipment, avoid damaging. Especially, for the power supply lithium battery of the old electric equipment, the lithium battery management circuit is very necessary to prevent the problem that the continuous full-load electricity utilization of the electric equipment is easy to have faults after the lithium battery discharges.
The charge and discharge management unit 101 is used for performing undervoltage/overvoltage/overcurrent detection protection control on the lithium battery device; the MCU main control unit is used for monitoring the battery voltage of the lithium battery in real time in a discharging mode, calculating the capacity and then adjusting the output voltage of the lithium battery through the adjustment of the duty ratio. The duty ratio signal is controlled to change, and the duty ratio of the output voltage of the circuit is gradually reduced according to a preset simulated dry battery discharge curve.
The lithium battery circuit, the device and the method for simulating the dry battery discharge are preferably implemented as shown in fig. 1 and fig. 2, and are mainly applied to lithium battery devices, especially column-type lithium batteries, and after the lithium battery is placed in electric equipment, the lithium battery can realize the discharge curve of the simulated dry battery for discharge. The embodiment of the implementation of the arrangement is mainly to arrange a management circuit in a circuit board of the lithium battery, wherein the management circuit is physically arranged on the circuit board of the lithium battery, and the lithium battery unit is managed to charge and discharge through the circuit board.
The circuit includes a charge and discharge management unit 101 for controlling the charge and discharge process of the lithium battery, and preferably, but not limited to, 4054 or 4057 linear charging IC may be used, and a current limiting value, such as, but not limited to, 300mA may be preset during charging. Through the control of charge and discharge management unit 101, it can set up the pilot lamp pin when lithium battery cell is in charged state, charge and discharge management unit can control the LED red light and light, when being full of or saturated back, turns green light and lights.
The management circuit further includes a DC-DC voltage reduction unit 102 for controlling the voltage during discharging, which is supplied according to the capacity of the lithium battery unit itself in the prior art, for example, a 1.5V is usually supplied by a conventional 18650 battery. The circuit also comprises an MCU main control unit 103 which is electrically connected with the DC-DC voltage reduction unit and controlled by the charge and discharge management unit to change the voltage output by the DC-DC voltage reduction unit by changing duty ratio signals in a controlled manner.
The controlled change mode of the MCU main control unit is set according to a preset dry battery discharge curve, so that the voltage output by the DC-DC voltage reduction unit can be adjusted according to the corresponding duty ratio signal, and especially when the load is connected to discharge to a certain degree, the voltage reduction output is realized by controlling the duty ratio signal. The discharge curve of the dry battery can be preset according to a common discharge rule as described above, and a statistical rule or a common dry battery discharge curve, such as a discharge curve of a carbon or alkaline battery, or a curve similar to the dry battery discharge after adjustment (i.e., not necessarily an actual battery discharge curve, but a curve preset according to a dry battery discharge mode, such as a downward inclined straight line) can be adopted.
The lithium battery circuit may further include a protection circuit unit 104 for protecting the charging and discharging processes of the lithium battery to prevent damage to the battery caused by overload or overcharge.
In the preferred embodiment of the lithium battery circuit, the device and the method for simulating the dry battery discharge, the charge and discharge management unit can also detect whether a load is connected, and if no load is connected, the low power consumption mode is kept; when a load is connected, the DC-DC voltage reduction unit is awakened to perform discharge output, and the voltage output of the DC-DC voltage reduction unit is changed through the duty ratio signal of the MCU main control unit which is controlled to change. Preferably, the DC-DC voltage reduction unit can be periodically woken up to periodically change the voltage, so that the additional energy consumption increase caused by real-time change can be reduced. The duty ratio signal changing rule of the controlled change is carried out according to a preset dry battery discharging curve, namely, the electric quantity capacity of the lithium battery unit can be judged according to the detected voltage, or the duty ratio can be adjusted according to the weak change of the output current of the lithium battery unit or the change of time, so that the lithium battery can simulate the voltage reduction mode output of a dry battery.
When the load is removed, the charge and discharge management unit restores the low power consumption mode and detects whether the load is accessed or not at regular time. In the actual circuit configuration of the embodiment, the lithium battery circuit, the device and the method for simulating the discharge of the dry battery can also be provided with a switch structure, and the MCU main control unit is closed to recover the original discharge mode of the lithium battery, so that for a relatively new electric device, for example, an electric device which is subjected to protective improvement of the electric circuit aiming at a lithium battery discharge mode, the discharge protection of the lithium battery simulating the dry battery can be omitted.
Further, in the preferred embodiment of the lithium battery circuit, the device and the method for simulating the dry battery discharge, after the discharge mode of the simulated dry battery is adopted, the original battery capacity detection mode and the original battery use mode of the electric equipment can be used for the lithium battery like a dry battery, for example, according to the change of the power supply voltage, the possible power failure state of the lithium battery can be prompted after the lithium battery is used for a long time, the original low power detection and alarm prompting mode of the electric equipment can work and prompt normally, and the problems that the power failure is suddenly cut off and the buffering time for a user is lacked due to the fact that the lithium battery is flat in discharge curve and falls off from a cliff are solved. The simulation dry battery discharge curve also can use consumer to remind user's electric quantity to be about to exhaust, can in time change or charge etc to can promote user's use and experience.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A lithium battery circuit for simulating dry battery discharge is applied to a circuit board of a lithium battery device, and is characterized in that the circuit comprises: the charging and discharging management unit, the MCU main control unit and the DC-DC voltage reduction unit; the charge and discharge management unit is used for carrying out undervoltage/overvoltage/overcurrent detection protection control on the lithium battery device; the MCU main control unit is used for adjusting output voltage through output duty ratio after calculating capacity by detecting battery voltage in real time in a discharge mode; the duty ratio signal is controlled to change, and the duty ratio of the output voltage of the circuit is gradually reduced according to a preset simulated dry battery discharge curve.
2. The lithium battery circuit simulating dry battery discharge according to claim 1, wherein the charge and discharge management unit employs a linear charge chip and sets a predetermined current limit value during charging.
3. The lithium battery circuit simulating dry battery discharge according to claim 2, wherein a protection circuit unit is further provided in the circuit for protecting the lithium battery unit from charge and discharge.
4. The lithium battery circuit for simulating dry battery discharge according to claim 3, wherein the circuit is further configured to detect whether a load is connected, and to be in a low power consumption state before connection, and to wake up the DC-DC voltage reduction unit after connection.
5. The utility model provides a simulation dry battery discharging's lithium cell device, its setting is including the lithium cell who is used for the storage electric quantity, and to the circuit board that the lithium cell carries out charge-discharge management, be provided with lithium cell circuit on the circuit board, its characterized in that, the circuit includes: the charging and discharging management unit, the MCU main control unit and the DC-DC voltage reduction unit; the charge and discharge management unit is used for carrying out under-voltage/overvoltage/overcurrent detection protection control on the lithium battery device; the MCU main control unit is used for adjusting output voltage through output duty ratio after calculating capacity by detecting battery voltage in real time in a discharge mode; the duty ratio signal is controlled to change, and the duty ratio of the output voltage of the circuit is gradually reduced according to a preset simulated dry battery discharge curve.
6. The lithium battery device simulating dry battery discharge according to claim 5, wherein the charge and discharge management unit employs a linear charge chip and sets a predetermined current limit value at the time of charge.
7. The lithium battery device simulating dry battery discharge according to claim 6, wherein a protection circuit unit is further provided in the circuit for protecting the lithium battery unit from charge and discharge.
8. The device of claim 7, wherein the circuit is further configured to detect whether a load is connected and to activate the DC-DC voltage reduction unit in a low power state before connection and to wake up the DC-DC voltage reduction unit after connection.
9. A method of implementing a lithium battery circuit using a simulated dry cell discharge as claimed in any of claims 1 to 8, comprising the steps of:
A. the charging and discharging management unit detects whether a load is accessed, and if the load is not accessed, the charging and discharging management unit enters a low power consumption mode;
B. if the charging and discharging management unit detects that a load is connected, the DC-DC voltage reduction unit is awakened to output current; the DC-DC voltage reduction unit changes the voltage output of the DC-DC voltage reduction unit according to the duty ratio signal of the MCU main control unit which is controlled to change;
the controlled change of the duty ratio signal is based on the detection of the discharge current of the lithium battery and the calculation of the capacity of the lithium battery, and simulates the discharge curve of a dry battery, so that the duty ratio signal of the DC-DC voltage reduction unit is gradually reduced to reduce the voltage for discharging.
10. The method as claimed in claim 9, wherein the charging and discharging management unit in step B wakes up the DC-DC voltage reduction unit periodically and adjusts the output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210200743.8A CN114726022A (en) | 2022-03-01 | 2022-03-01 | Lithium battery circuit, device and method for simulating dry battery discharge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210200743.8A CN114726022A (en) | 2022-03-01 | 2022-03-01 | Lithium battery circuit, device and method for simulating dry battery discharge |
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| CN114726022A true CN114726022A (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210200743.8A Pending CN114726022A (en) | 2022-03-01 | 2022-03-01 | Lithium battery circuit, device and method for simulating dry battery discharge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116470620A (en) * | 2023-05-13 | 2023-07-21 | 深圳市汇一技研有限公司 | Discharging circuit, battery management module, power supply module and electric equipment |
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2022
- 2022-03-01 CN CN202210200743.8A patent/CN114726022A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116470620A (en) * | 2023-05-13 | 2023-07-21 | 深圳市汇一技研有限公司 | Discharging circuit, battery management module, power supply module and electric equipment |
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