CN218102624U - Bluetooth headset charging box temperature control circuit and Bluetooth headset charging box - Google Patents
Bluetooth headset charging box temperature control circuit and Bluetooth headset charging box Download PDFInfo
- Publication number
- CN218102624U CN218102624U CN202221383398.8U CN202221383398U CN218102624U CN 218102624 U CN218102624 U CN 218102624U CN 202221383398 U CN202221383398 U CN 202221383398U CN 218102624 U CN218102624 U CN 218102624U
- Authority
- CN
- China
- Prior art keywords
- charging
- unit
- bluetooth headset
- switching
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The utility model discloses a bluetooth headset charges box temperature control circuit and bluetooth headset charges box, bluetooth headset charges box temperature control circuit includes: a charging unit; the temperature detection unit is provided with a first connecting end, a second connecting end and a third connecting end, the first connecting end is used for connecting a ground wire, the second connecting end is electrically connected with the output end of the charging unit, and the temperature detection unit is used for detecting the temperature of the charging box, converting the temperature into a voltage signal and outputting the voltage signal through the third connecting end; the charging management unit is electrically connected with the output end and the third connecting end of the charging unit respectively; the charging current switching unit is provided with a first switching end, a second switching end and a switching output end, the first switching end, the second switching end and the switching output end are all connected with the charging management unit, and the charging current switching unit is used for switching current for charging the storage battery. The temperature of effectively avoiding charging when the box charges is too high, thereby also ensured that charging power can not hang down excessively simultaneously and lead to the charge time overlength.
Description
Technical Field
The utility model relates to a bluetooth headset wireless charging technology field, in particular to bluetooth headset charging box temperature control circuit and bluetooth headset charging box.
Background
Among the correlation technique, the too high problem of temperature rise when the ubiquitous charging of bluetooth headset box that charges, the temperature rise is because wireless module during operation consumption is higher to lead to generating heat more seriously, the box that charges high temperature can influence charge efficiency and the box that charges self life. In addition, potential safety hazards exist in the using process of the consumer, and experience feeling is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a bluetooth headset box temperature control circuit that charges has solved the temperature rise in the charging process higher, the serious problem that generates heat.
The utility model discloses still provide a bluetooth headset charging box with above-mentioned bluetooth headset charging box temperature control circuit.
According to the utility model discloses bluetooth headset charging box temperature control circuit of first aspect embodiment, include:
a charging unit;
the temperature detection unit is provided with a first connecting end, a second connecting end and a third connecting end, the first connecting end is used for being connected with a ground wire, the second connecting end is electrically connected with the output end of the charging unit, and the temperature detection unit is used for detecting the temperature of the charging box, converting the temperature into a voltage signal and outputting the voltage signal through the third connecting end;
the charging management unit is electrically connected with the output end of the charging unit and the third connecting end respectively;
the charging current switching unit is provided with a first switching end, a second switching end and a switching output end, the first switching end, the second switching end and the switching output end are all connected with the charging management unit, and the charging current switching unit is used for switching the current charged to the storage battery by the charging management unit.
According to the utility model discloses bluetooth headset charging box temperature control circuit has following beneficial effect at least:
the output end of the charging unit is connected with the charging management unit to provide electric energy for the storage battery. The temperature detection unit detects the temperature change of the whole charging box in the charging process, the second connecting end of the temperature detection unit is electrically connected with the output end of the charging unit, the change of the internal temperature of the charging box can be detected in time through the change of the voltage value, and the change is transmitted to the charging management unit through the third connecting end of the temperature detection unit. The charging management unit is connected with the charging current switching unit, receives a voltage signal that the temperature detection unit detects that the temperature inside the charging box is too high, and controls the charging current switching unit to adjust the charging current so as to reduce the power consumption of the charging unit, thereby reducing the temperature inside the whole charging box. The charging management unit receives a voltage signal that the temperature detection unit detects that the temperature inside the charging box recovers to be normal, the charging management unit controls the charging current switching unit to adjust the charging current so as to recover the normal power consumption of the charging unit, the whole circuit is simple in design, the overhigh temperature when the charging box is charged is effectively avoided, and meanwhile, the charging power is ensured not to be overlow so as to cause overlong charging time.
According to the utility model discloses a some embodiments, charging current switching unit includes:
a grid electrode of the first field effect transistor is connected with a first output end of the charging management unit, and a source electrode of the first field effect transistor is connected with the ground wire;
one end of the first resistor is connected with the drain electrode of the first field effect transistor, and the other end of the first resistor is connected with the current input end of the charging management unit;
a grid electrode of the second field effect transistor is connected with the second output end of the charging management unit, and a source electrode of the second field effect transistor is connected with the ground wire;
and one end of the second resistor is connected with the drain electrode of the second field effect transistor, and the other end of the second resistor is connected with the current input end of the charging management unit.
According to some embodiments of the utility model, still include first diode, first diode anodal with the source electrode of first field effect transistor is connected, the negative pole with the drain electrode of first field effect transistor is connected.
According to some embodiments of the present invention, the power supply further comprises a second diode, the second diode anode is connected to the source electrode of the second field effect transistor, and the cathode is connected to the drain electrode of the second field effect transistor.
According to the utility model discloses a some embodiments, the temperature detecting element includes:
one end of the thermistor is electrically connected with the cathode of the storage battery, and the other end of the thermistor is electrically connected with the temperature detection end of the storage battery;
and one end of the divider resistor is electrically connected with the other end of the thermistor, and the other end of the divider resistor is connected with the voltage input end of the charging management unit.
According to some embodiments of the utility model, the charging unit adopts wireless charging.
According to some embodiments of the present invention, further comprising:
one end of the first capacitor is connected with the output end of the charging unit, and the other end of the first capacitor is connected with the ground wire;
and the second capacitor is connected with the first capacitor in parallel.
According to some embodiments of the present invention, further comprising:
one end of the first inductor is connected with the output end of the charging management unit;
one end of the third capacitor is connected with the other end of the first inductor, and the other end of the third capacitor is connected with the ground wire;
a fourth capacitor connected in parallel with the third capacitor;
and one end of the third resistor is connected with the other end of the first inductor, and the other end of the third resistor is connected with the anode of the storage battery.
According to the utility model discloses bluetooth headset charging box of second aspect embodiment, including above embodiment bluetooth headset charging box temperature control circuit.
According to the utility model discloses bluetooth headset box that charges has following beneficial effect at least:
by adopting the temperature control circuit of the charging box of the Bluetooth headset in the embodiment of the first aspect, the charging unit is connected with the charging management unit to provide electric energy for the storage battery. The temperature detection unit can detect the change of the internal temperature of the charging box through the change of the voltage value in time. The charging management unit receives a voltage signal that the temperature detection unit detects that the temperature inside the charging box is too high, and controls the charging current switching unit to adjust the charging current so as to reduce the power consumption of the charging unit, so that the temperature inside the whole charging box is reduced. The charging management unit receives a voltage signal that the temperature detection unit detects that the internal temperature of the charging box recovers to be normal, the charging management unit controls the charging current switching unit to adjust the charging current so as to recover the normal power consumption of the charging unit, the whole circuit is simple in design, the overhigh temperature when the charging box is charged is effectively avoided, and meanwhile, the charging power is ensured not to be too low so as to cause overlong charging time.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
fig. 1 is a system block diagram of a temperature control circuit of a charging box of a bluetooth headset according to an embodiment of the present invention;
fig. 2 is a circuit diagram of the temperature control circuit of the bluetooth headset charging box according to an embodiment of the present invention.
Reference numerals:
a battery 100;
a charging unit 200;
a temperature detection unit 300;
a charging current switching unit 400;
the charging management unit 500.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.
In the description of the present invention, a plurality means two or more. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, fig. 1 is a system block diagram of a temperature control circuit of a bluetooth headset charging box, and the temperature control circuit of the bluetooth headset charging box includes: a charging unit 200, a temperature detection unit 300, a charging current switching unit 400, and a charging management unit 500.
The temperature detection unit 300 is provided with a first connection end, a second connection end and a third connection end, the first connection end is used for being connected with a ground wire, the second connection end is electrically connected with the output end of the charging unit 200, and the temperature detection unit 300 is used for detecting the temperature of the charging box, converting the temperature into a voltage signal and outputting the voltage signal through the third connection end;
the charging management unit 500 is electrically connected to the output end and the third connection end of the charging unit 200 respectively;
the charging current switching unit 400 has a first switching terminal, a second switching terminal and a switching output terminal, all of which are connected to the charging management unit 500, and the charging current switching unit 400 is configured to switch the current charged by the charging management unit 500 to the storage battery 100.
Referring to fig. 1 and 2, the output terminal of the charging unit 200 is connected to the voltage input terminal of the charging management unit 500, and the voltage output terminal of the charging management unit 500 is connected to the battery 100 to charge the battery 100. The temperature detection unit 300 can timely detect the temperatures of the charging unit 200 and the storage battery 100, and convert the temperatures into voltage signals to be fed back to the charging management unit 500 through the third connection terminal.
When the voltage signal fed back by the temperature detection unit 300 is normal, the charging management unit 500 controls the charging current switching unit 400 to maintain the normal charging power. When the feedback voltage signal of the temperature detecting unit 300 does not fall within the normal range, which represents that the internal temperature of the charging box is too high at this time, the charging management unit 500 controls the charging current switching unit 400 to reduce the charging power, i.e., reduce the charging current, so as to reduce the power consumption of the charging unit 200, thereby reducing the internal temperature of the charging box. When the temperature detection unit 300 feeds back the voltage signal again and the voltage signal is normal, that is, the temperature has dropped to a normal value, at this time, the charging management unit 500 controls the charging current switching unit 400 to recover the normal charging power, so as to ensure the charging efficiency. The bluetooth headset box temperature control circuit that charges in this embodiment when effectively guaranteeing that the temperature can not be too high when charging, has still guaranteed that the charge time can not the overlength, has promoted user's use and has experienced.
It should be noted that in some embodiments, the charging current is 303mA at normal power and 161mA at low power. In this embodiment, the charging management unit 500 may adopt an RT8020 chip model.
Referring to fig. 2, it can be understood that the charging current switching unit 400 includes: the circuit comprises a first field effect transistor Q4, a first resistor R3, a second field effect transistor Q2 and a second resistor R5.
A first field effect transistor Q4 having a gate connected to the first output STATE of the charge management unit 500 and a source connected to the ground;
a first resistor R3 having one end connected to the drain of the first fet Q4 and the other end connected to the current input terminal ICH of the charge management unit 500;
a second field effect transistor Q2, a gate of which is connected to the second output terminal EN of the charge management unit 500, and a source of which is connected to the ground;
and a second resistor R5 having one end connected to the drain of the second fet Q2 and the other end connected to the current input ICH of the charge management unit 500.
The left end of the first resistor R3 is connected to the drain of the first fet Q4, and the right end of the first resistor R3 is connected to the current input ICH of the charge management unit 500. The right end of the second resistor R5 is connected to the drain of the first fet Q2, and the left end of the second resistor R5 is connected to the current input ICH of the charge management unit 500. As the charging time continues to increase, the temperature inside the charging box also increases. When the temperature exceeds the acceptable range, that is, is greater than or equal to 40 °, the NTC terminal of the charge management unit 500 detects that the divided voltage value formed by the thermistor R4 and the voltage dividing resistor R2 exceeds the normal value set by us, the first output terminal STATE of the charge management unit 500 controls the first fet Q4 to turn off the first resistor R3, and the second output terminal EN of the charge management unit 500 controls the second fet Q2 to turn on the second resistor R5, so that the charging current is reduced to 161mA. When the charging current is automatically reduced to 161mA, the power consumption of the charging unit 200 is reduced, and as the power consumption of the charging unit 200 is reduced, the temperature of the entire inside of the charging case is reduced to an acceptable range, that is, less than 40 °. When the temperature in the charging box is reduced to a lower normal temperature, the charging box automatically recovers to a normal charging current; the circulation ensures that the temperature is reduced and cannot exceed the standard, and ensures that the charging time is not too long.
Referring to fig. 2, it can be understood that the temperature control circuit of the charging box of the bluetooth headset further includes a first diode, an anode of the first diode is connected to a source of the first field-effect transistor Q4, and a cathode of the first diode is connected to a drain of the first field-effect transistor Q4. The anode of the first diode is connected to the source S of the first field effect transistor Q4, and the cathode of the first diode is connected to the drain D of the first field effect transistor Q4, so that the voltage stabilization effect is achieved.
Referring to fig. 2, it can be understood that the temperature control circuit of the charging box of the bluetooth headset further includes a second diode, the anode of the second diode is connected with the source electrode of the second field effect transistor Q2, and the cathode of the second diode is connected with the drain electrode of the second field effect transistor Q2. The anode of the second diode is connected to the source S of the second field effect transistor Q2, and the cathode of the second diode is connected to the drain D of the second field effect transistor Q2, so that the voltage stabilization effect is achieved.
Referring to fig. 1 and 2, it can be understood that the temperature detection unit 300 includes: thermistor R4, divider resistance R2.
One end of the thermistor R4 is electrically connected with the negative electrode of the storage battery 100, and the other end of the thermistor R4 is electrically connected with the temperature detection end of the storage battery 100;
and one end of the divider resistor R2 is electrically connected to the other end of the thermistor R4, and the other end is connected to the voltage input end of the charging management unit 500.
The lower end of the thermistor R4 is electrically connected to the negative electrode of the battery 100, and the upper end is electrically connected to the temperature detection end of the battery 100. The upper end of the thermistor R4 is also connected to the lower end of the voltage dividing resistor R2, and the upper end of the voltage dividing resistor R2 is connected to the charging management unit 500. The middle node of the thermistor R4 connected to the voltage divider R2 is a second connection end, the second connection end is connected to the NTC end of the charging management unit 500, and the NTC end of the charging management unit 500 detects a divided voltage value formed by the thermistor R4 and the voltage divider R2. When the divided voltage value is a normal value, it indicates that the internal temperature of the charging box is also a normal value at that time.
Referring to fig. 1, it can be understood that the charging unit 200 employs wireless charging. CV8013N may be used as a chip model of the charging unit 200.
Referring to fig. 2, it can be understood that the temperature control circuit of the bluetooth headset charging box further includes: a first capacitor C1 and a second capacitor C2.
A first capacitor C1 having one end connected to the output end of the charging unit 200 and the other end connected to the ground line;
and the second capacitor C2 is connected with the first capacitor C1 in parallel.
The upper ends of the first capacitor C1 and the second capacitor C2 are connected with the output end of the charging unit 200; the lower ends of the first capacitor C1 and the second capacitor C2 are connected to the same node and are connected with a ground wire, so that the filtering effect is achieved.
Referring to fig. 2, it can be understood that the temperature control circuit of the bluetooth headset charging box further includes: a first inductor L1, a third capacitor C9, a fourth capacitor C17 and a third resistor R21.
A first inductor L1, one end of which is connected to the output terminal LX of the charging management unit 500;
one end of the third capacitor C9 is connected with the other end of the first inductor L1, and the other end is connected with the ground wire;
a fourth capacitor C17 connected in parallel with the third capacitor C9;
and a third resistor R21 having one end connected to the other end of the first inductor L1 and the other end connected to the positive electrode of the battery 100.
The right end of the first inductor L1 is connected to the output terminal LX of the charging management unit 500, the left end of the first inductor L1 is connected to one end of the third capacitor C9 and one end of the fourth capacitor C17, and the other end of the third capacitor C9 and the other end of the fourth capacitor C17 are both connected to the ground line. The left end of the first inductor L1 is further connected to one end of a third resistor R21, and the other end of the third resistor R21 is connected to the positive electrode of the battery 100. The function of rectifying and filtering is achieved.
Referring to fig. 1 and fig. 2, the bluetooth headset charging box of the embodiment of the second aspect of the present invention includes the bluetooth headset charging box temperature control circuit of the above embodiment.
Because the bluetooth headset charges the box and has adopted the bluetooth headset of above-mentioned embodiment to charge the whole technical scheme of box temperature control circuit, consequently have all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer describe herein.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (9)
1. The utility model provides a bluetooth headset charging box temperature control circuit which characterized in that includes:
a charging unit;
the temperature detection unit is provided with a first connection end, a second connection end and a third connection end, the first connection end is used for being connected with a ground wire, the second connection end is electrically connected with the output end of the charging unit, and the temperature detection unit is used for detecting the temperature of the charging box, converting the temperature into a voltage signal and outputting the voltage signal through the third connection end;
the charging management unit is electrically connected with the output end of the charging unit and the third connecting end respectively;
the charging current switching unit is provided with a first switching end, a second switching end and a switching output end, the first switching end, the second switching end and the switching output end are all connected with the charging management unit, and the charging current switching unit is used for switching the current charged by the charging management unit to the storage battery.
2. The bluetooth headset charging box temperature control circuit of claim 1, characterized in that: the charging current switching unit includes:
a grid electrode of the first field effect transistor is connected with a first output end of the charging management unit, and a source electrode of the first field effect transistor is connected with the ground wire;
one end of the first resistor is connected with the drain electrode of the first field effect transistor, and the other end of the first resistor is connected with the current input end of the charging management unit;
a grid electrode of the second field effect transistor is connected with the second output end of the charging management unit, and a source electrode of the second field effect transistor is connected with the ground wire;
and one end of the second resistor is connected with the drain electrode of the second field effect transistor, and the other end of the second resistor is connected with the current input end of the charging management unit.
3. The bluetooth headset charging box temperature control circuit of claim 2, further comprising a first diode, wherein an anode of the first diode is connected to the source of the first fet and a cathode of the first diode is connected to the drain of the first fet.
4. The temperature control circuit of claim 2, further comprising a second diode, wherein an anode of the second diode is connected to a source of the second field effect transistor, and a cathode of the second diode is connected to a drain of the second field effect transistor.
5. The bluetooth headset charging box temperature control circuit of claim 1, characterized in that: the temperature detection unit includes:
one end of the thermistor is electrically connected with the cathode of the storage battery, and the other end of the thermistor is electrically connected with the temperature detection end of the storage battery;
and one end of the divider resistor is electrically connected with the other end of the thermistor, and the other end of the divider resistor is connected with the voltage input end of the charging management unit.
6. The temperature control circuit of claim 1, wherein the charging unit is charged wirelessly.
7. The bluetooth headset charging box temperature control circuit of claim 1, further comprising:
one end of the first capacitor is connected with the output end of the charging unit, and the other end of the first capacitor is connected with the ground wire;
and the second capacitor is connected with the first capacitor in parallel.
8. The bluetooth headset charging box temperature control circuit of claim 1, further comprising:
one end of the first inductor is connected with the output end of the charging management unit;
one end of the third capacitor is connected with the other end of the first inductor, and the other end of the third capacitor is connected with the ground wire;
a fourth capacitor connected in parallel with the third capacitor;
and one end of the third resistor is connected with the other end of the first inductor, and the other end of the third resistor is connected with the anode of the storage battery.
9. A bluetooth headset charging box, characterized in that it comprises a bluetooth headset charging box temperature control circuit according to any of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221383398.8U CN218102624U (en) | 2022-06-01 | 2022-06-01 | Bluetooth headset charging box temperature control circuit and Bluetooth headset charging box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221383398.8U CN218102624U (en) | 2022-06-01 | 2022-06-01 | Bluetooth headset charging box temperature control circuit and Bluetooth headset charging box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218102624U true CN218102624U (en) | 2022-12-20 |
Family
ID=84460590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221383398.8U Active CN218102624U (en) | 2022-06-01 | 2022-06-01 | Bluetooth headset charging box temperature control circuit and Bluetooth headset charging box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218102624U (en) |
-
2022
- 2022-06-01 CN CN202221383398.8U patent/CN218102624U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10270282B2 (en) | Solar charger comprising a charging unit for charging a power battery to a high voltage, a photo-sensitive unit for detecting light intensity, a switch unit for regulating connection between the charging unit and the power battery, and a control unit for regulating the charging of the power battery based on a saturation level and the light intensity | |
| TW201729502A (en) | System and method for charging terminal and power adapter | |
| CN210038590U (en) | Voltage output circuit and electron cigarette | |
| KR20140044127A (en) | Apparatus for waking up multi-bms | |
| JP6884281B2 (en) | NFC antenna power acquisition device | |
| EP3806274A2 (en) | Charging integrated circuit and operating method | |
| US20220385096A1 (en) | Battery control circuit, battery, and related electronic device | |
| CN108964215B (en) | Charger | |
| CN218102624U (en) | Bluetooth headset charging box temperature control circuit and Bluetooth headset charging box | |
| CN219960154U (en) | Battery protection circuit and battery management system | |
| CN209766595U (en) | overlength standby device | |
| CN218102650U (en) | Temperature control circuit and charger | |
| CN215646155U (en) | Battery protection circuit and chip | |
| CN114301119A (en) | Wake-up circuit, battery management system, battery pack and electric device | |
| CN212875464U (en) | Tripod head camera control system | |
| CN212518552U (en) | Improved wireless charger | |
| CN210350789U (en) | Anti-reverse-connection self-power supply circuit | |
| CN103683396A (en) | Self-adaptive battery equalization charge device and method with turnover protection function | |
| CN210111001U (en) | Heating circuit, aluminum substrate with same, battery pack and solar battery | |
| CN216252223U (en) | Control circuit of battery module, battery module and terminal | |
| CN213522445U (en) | Ultra-low static power consumption circuit for mobile lighting equipment | |
| CN213459496U (en) | Single-live-wire panel switch | |
| CN116780732B (en) | Multifunctional charging system and method for energy storage battery | |
| CN216086227U (en) | Battery activation circuit | |
| CN220066933U (en) | Charging circuit, chip and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |