CN216851352U - Battery pack charging monitoring circuit, device and equipment - Google Patents
Battery pack charging monitoring circuit, device and equipment Download PDFInfo
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- CN216851352U CN216851352U CN202123317281.8U CN202123317281U CN216851352U CN 216851352 U CN216851352 U CN 216851352U CN 202123317281 U CN202123317281 U CN 202123317281U CN 216851352 U CN216851352 U CN 216851352U
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Abstract
The utility model provides a battery package charging monitoring circuit, device and equipment, battery package charging monitoring circuit includes: the system comprises a charging detection module, a charging response module and a state monitoring module, wherein the state monitoring module and the charging response module are respectively connected with the charging detection module; the charging detection module is used for outputting a high-level signal to the charging response module when detecting that the charging voltage exists at the charging inlet of the battery pack; the charging response module is used for conducting a charging loop between the charging access port of the battery pack and the battery pack to charge the battery pack when the high-level signal is received; and the state monitoring module is used for monitoring the current state and the voltage state in the charging loop when the battery pack is charged. The charging state of the battery pack can be effectively monitored, so that abnormal loss of the battery pack during charging is reduced.
Description
Technical Field
The utility model relates to a charging monitoring technology field especially relates to a battery package charging monitoring circuit, device, equipment.
Background
In the actual working process, when the external power supply of the electrical equipment with the energy storage power supply is disconnected, the energy storage power supply can be generally used for providing electric energy for normal work of the equipment, so that the charging problem of the energy storage power supply cannot be avoided, however, most of the current electrical equipment cannot monitor the state of the energy storage power supply during charging, the energy storage power supply is often damaged due to poor charging state, and therefore the technical problem to be solved urgently is solved by monitoring the charging state of the energy storage power supply in real time.
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a battery package charge monitoring circuit, device and equipment, aims at solving the technical problem of battery package charged state monitoring.
In order to achieve the above object, the utility model provides a battery package charging monitoring circuit, battery package charging monitoring circuit includes: the system comprises a charging detection module, a charging response module and a state monitoring module, wherein the state monitoring module and the charging response module are respectively connected with the charging detection module, one end of the charging response module is connected with a charging inlet of a battery pack, and the other end of the charging response module is connected with the battery pack;
the charging detection module is used for outputting a high-level signal to the charging response module when detecting that the charging voltage exists at the charging inlet of the battery pack;
the charging response module is used for conducting a charging loop between the charging access port of the battery pack and the battery pack to charge the battery pack when the high-level signal is received;
and the state monitoring module is used for monitoring the current state and the voltage state in the charging loop when the battery pack is charged.
Optionally, the state monitoring module includes a voltage monitoring unit and a current monitoring unit, the voltage monitoring unit is connected to the charging inlet of the battery pack, and the current monitoring unit is connected to the charging response module;
the voltage monitoring unit is used for monitoring the charging voltage in the charging loop when the battery pack is charged;
and the current monitoring unit is used for monitoring the charging current in the charging loop when the battery pack is charged.
Optionally, the voltage monitoring unit includes a first resistor, a second resistor, and a first capacitor;
the first end of the first capacitor is connected with the second end of the first resistor, the first end of the second resistor is connected with the first end of the first capacitor, the second end of the first capacitor is grounded, the second end of the first capacitor is also connected with the second end of the second resistor, and the first end of the first resistor is connected with the charging response module.
Optionally, the current monitoring unit includes a third resistor, a fourth resistor, a fifth resistor, a second capacitor, and a first diode;
the second end of the fifth resistor is connected with the voltage monitoring unit, the first end of the fifth resistor is connected with the anode of the first diode, the anode of the first diode is connected with the first end of the second capacitor, the anode of the first diode is further connected with the first end of the third resistor, the cathode of the first diode is connected with a charging inlet of the battery pack, the second end of the second capacitor is connected with the second end of the third resistor, the second end of the third resistor is further connected with the first end of the fourth resistor, and the second end of the fourth resistor is connected with the power supply.
Optionally, the charge detection module includes a tenth resistor and a third diode;
an anode of the third diode is connected with a second end of the tenth resistor, a cathode of the third diode is connected with a power supply voltage, and a first end of the tenth resistor is connected with a first end of the first resistor.
Optionally, the charging response module includes a first MOS transistor, a first triode, a second diode, a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor;
the first triode base is connected with the first end of the eighth resistor, the first triode base is further connected with the second end of the ninth resistor, the collector of the first triode is grounded, the collector of the first triode is further connected with the second end of the eighth resistor, the emitter of the first triode is connected with the second end of the seventh resistor, the source of the first MOS transistor is connected with the cathode of the second diode, the source of the first MOS transistor is further connected with the first end of the sixth resistor, the grid of the first MOS transistor is connected with the second end of the sixth resistor, the grid of the first MOS transistor is further connected with the first end of the seventh resistor, the drain of the first MOS transistor is connected with the battery pack, and the anode of the second diode is connected with the first end of the first resistor.
Optionally, the battery pack charging monitoring circuit further includes a load power supply module, the load power supply module is connected to the battery pack, and the load power supply module is further connected to the chip control unit;
and the load power supply module is used for supplying power to the load by using the battery pack when the load works.
Optionally, the load power supply module includes a second MOS transistor, a second triode, a fourth diode, a fifth diode, a sixth diode, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, and a fifteenth resistor;
the base of the second triode is connected with the second end of the thirteenth resistor, the base of the second triode is also connected with the first end of the fourteenth resistor, the collector of the second triode is grounded, the collector of the second triode is connected with the second end of the fourteenth resistor, the collector of the second triode is also connected with the second end of the fifteenth resistor, the emitter of the second triode is connected with the second end of the twelfth resistor, the emitter of the second triode is connected with the first end of the fifteenth resistor, the emitter of the second triode is also connected with the anode of the fifth diode, the cathode of the fifth diode is connected with the anode of the sixth diode, the source of the second MOS transistor is connected with the first end of the eleventh resistor, the source of the second MOS transistor is also connected with the battery pack, and the gate of the second MOS transistor is connected with the second end of the eleventh resistor, the grid electrode of the second MOS tube is also connected with the first end of the twelfth resistor, the drain electrode of the second MOS tube is connected with the anode of the fourth diode, and the cathode of the fourth diode is connected with the chip control unit.
In order to achieve the above object, the utility model discloses still provide a battery package monitoring devices that charges, the device includes as above battery package charging monitoring circuit.
In order to achieve the above object, the utility model discloses still provide a battery package monitoring facilities that charges, equipment includes as above battery package monitoring devices that charges.
The utility model provides a battery package monitoring circuit that charges, battery package monitoring circuit that charges includes: the system comprises a charging detection module, a charging response module and a state monitoring module, wherein the state monitoring module and the charging response module are respectively connected with the charging detection module, one end of the charging response module is connected with a charging inlet of a battery pack, and the other end of the charging response module is connected with the battery pack; the charging detection module is used for outputting a high-level signal to the charging response module when detecting that the charging voltage exists at the charging inlet of the battery pack; the charging response module is used for conducting a charging loop between the charging access port of the battery pack and the battery pack when the high-level signal is received, and charging the battery pack; and the state monitoring module is used for monitoring the current state and the voltage state in the charging loop when the battery pack is charged. The utility model discloses a change of voltage status and current state among the real-time supervision battery package charging circuit reaches the effective control to battery package charged state to alleviate the unusual loss when battery package charges.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a functional block diagram of a first embodiment of a battery pack charging monitoring circuit according to the present invention;
fig. 2 is a functional block diagram of a state monitoring module according to a first embodiment of the battery pack charging monitoring circuit of the present invention;
fig. 3 is a schematic circuit diagram of a first embodiment of the battery pack charging monitoring circuit according to the present invention;
fig. 4 is a functional block diagram of a load power supply module according to a first embodiment of the battery pack charging monitoring circuit of the present invention.
The reference numbers illustrate:
the realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a battery package monitoring circuit that charges.
Referring to fig. 1, in the embodiment of the present invention, the battery pack charging monitoring circuit includes a charging detection module 10, a charging response module 20 and a state monitoring module 30, the state monitoring module 30 and the charging response module 20 respectively connect with the charging detection module 10, one end of the charging response module 20 is connected to the charging inlet of the battery pack, the other end of the charging response module 20 is connected to the battery pack
The charging detection module 10 is configured to output a high level signal to the charging response module 20 when detecting that a charging voltage exists at a charging inlet of the battery pack.
It should be noted that what actually performs the charging voltage detection on the charging inlet of the battery pack in the charging detection module 10 is a chip control unit, and when detecting the charging voltage, the chip control unit outputs a high level signal to the charging response module 20 to implement the charging detection function.
It is understood that the chip control unit may be an MCU chip; the chip control unit is connected to the charging response module 20, and when the chip control unit does not detect the charging voltage, the charging detection module 10 does not work.
The charging response module 20 is configured to, when receiving the high level signal, turn on a charging loop between the battery pack charging inlet and the battery pack, and charge the battery pack.
It should be noted that, when the charging response module 20 receives the high level signal, firstly the first transistor is turned on, and secondly the first MOS transistor is turned on, after both are turned on, the charging response module 20 forms a charging loop between the charging inlet and the battery pack, so that the positive electrode of the battery pack is connected to the positive electrode of the charger.
The state monitoring module 30 is configured to monitor a current state and a voltage state in the charging loop when the battery pack is charged.
In specific implementation, according to the monitoring of the current state and the voltage state, the adaptability detection of the battery pack charging equipment can be realized, and whether the battery pack charging voltage and the battery pack charging current are in the reasonable range of the battery pack charging can be realized.
Further, referring to fig. 2, in order to effectively monitor the charging state of the battery pack and monitor the charging voltage and the charging current, the state monitoring module 30 includes a voltage monitoring unit 31 and a current monitoring unit 32, the voltage monitoring unit 31 is connected to the charging inlet of the battery pack, and the current monitoring unit 32 is connected to the charging response module;
the voltage monitoring unit 31 is configured to monitor a charging voltage in the charging loop when the battery pack is charged;
it should be noted that the voltage state refers to a real-time state of the charging voltage, and includes a magnitude of the charging voltage.
The current monitoring unit 32 is configured to monitor a charging current in the charging loop when the battery pack is charged.
It should be noted that the current state refers to a real-time state of the charging current, and includes a magnitude of the charging current.
Further, referring to fig. 3, the voltage monitoring unit includes a first resistor, a second resistor, and a first capacitor; the first end of the first capacitor is connected with the second end of the first resistor, the first end of the second resistor is connected with the first end of the first capacitor, the second end of the first capacitor is grounded, the second end of the first capacitor is further connected with the second end of the second resistor, and the first end of the first resistor is connected with the charging response module.
It should be noted that, when the battery pack is charged, the voltage monitoring unit is turned on, and a current flows through the first resistor, the second resistor, and the first capacitor in sequence. The first resistor is a current-limiting resistor, the second resistor is a divider resistor, the first capacitor is connected with the second resistor in parallel and then connected with the first resistor in series to form a voltage monitoring function part of the voltage monitoring unit, and real-time monitoring of the charging voltage of the battery pack is achieved.
Further, referring to fig. 3, the current monitoring unit includes a third resistor, a fourth resistor, a fifth resistor, a second capacitor, and a first diode; the second end of the fifth resistor is connected with the voltage monitoring unit, the first end of the fifth resistor is connected with the anode of the first diode, the anode of the first diode is connected with the first end of the second capacitor, the anode of the first diode is further connected with the first end of the third resistor, the cathode of the first diode is connected with a charging inlet of the battery pack, the second end of the second capacitor is connected with the second end of the third resistor, the second end of the third resistor is further connected with the first end of the fourth resistor, and the second end of the fourth resistor is connected with the power supply.
In specific implementation, when the battery pack is charged, the current monitoring unit is switched on, current flows to GND through the battery pack and then flows to the negative electrode of the charging inlet through the fifth resistor, so that real-time monitoring of charging current of the battery pack is achieved. The fourth resistor and the fifth resistor are current-limiting resistors, the third resistor is a voltage-dividing resistor, the second capacitor is connected with the third resistor in parallel and then connected with the fourth resistor in series to form a current monitoring function part of the current monitoring unit, and real-time monitoring of the charging current of the battery pack is achieved.
Further, referring to fig. 3, the charge detection module includes a tenth resistor and a third diode; an anode of the third diode is connected with a second end of the tenth resistor, a cathode of the third diode is connected with a power supply voltage, and a first end of the tenth resistor is connected with a first end of the first resistor.
It should be noted that the terminal of the charging detection module is a chip control unit, and the chip control unit is connected to the power supply (VCC).
In a specific implementation, when a charging voltage appears at the charging inlet, the voltage detection circuit is turned on, a current passes through the tenth resistor and the third diode and then reaches the chip control unit, and the chip control unit sends a high-level signal to the charging response module after detecting the charging current. The tenth resistor and the third diode mainly function to limit current of the circuit.
Further, referring to fig. 3, the charging response module includes a first MOS transistor, a first triode, a second diode, a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor; the first triode base is connected with the first end of the eighth resistor, the first triode base is further connected with the second end of the ninth resistor, the collector of the first triode is grounded, the collector of the first triode is further connected with the second end of the eighth resistor, the emitter of the first triode is connected with the second end of the seventh resistor, the source of the first MOS transistor is connected with the cathode of the second diode, the source of the first MOS transistor is further connected with the first end of the sixth resistor, the grid of the first MOS transistor is connected with the second end of the sixth resistor, the grid of the first MOS transistor is further connected with the first end of the seventh resistor, the drain of the first MOS transistor is connected with the battery pack, and the anode of the second diode is connected with the first end of the first resistor.
In a specific implementation, after the charging response module receives a high level signal sent by the charging detection module, a first end voltage (a charge end voltage) of the ninth resistor changes to a high level, a base of the first triode is also the high level, the first triode is conducted, the first MOS transistor is further conducted, and the charging response module forms a charging loop between the charging inlet and the battery pack so as to charge the battery pack. The seventh resistor and the ninth resistor are current-limiting resistors, and the sixth resistor and the eighth resistor are voltage-dividing resistors.
Further, referring to fig. 4, the battery pack charging monitoring circuit further includes a load power supply module 40, the load power supply module 40 is connected to the battery pack, and the load power supply module 40 is further connected to the chip control unit; and the load power supply module is used for supplying power to the load by using the battery pack when the load works.
It should be noted that the load power supply module 40 operates when the battery pack is in a power supply state, and when the load power supply module operates, the power supply loop between the battery pack and the load is conducted, so that the load operates.
Further, referring to fig. 3, the load power supply module includes a second MOS transistor, a second triode, a fourth diode, a fifth diode, a sixth diode, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, and a fifteenth resistor; the base of the second triode is connected with the second end of the thirteenth resistor, the base of the second triode is also connected with the first end of the fourteenth resistor, the collector of the second triode is grounded, the collector of the second triode is connected with the second end of the fourteenth resistor, the collector of the second triode is also connected with the second end of the fifteenth resistor, the emitter of the second triode is connected with the second end of the twelfth resistor, the emitter of the second triode is connected with the first end of the fifteenth resistor, the emitter of the second triode is also connected with the anode of the fifth diode, the cathode of the fifth diode is connected with the anode of the sixth diode, the source of the second MOS transistor is connected with the first end of the eleventh resistor, the source of the second MOS transistor is also connected with the battery pack, and the gate of the second MOS transistor is connected with the second end of the eleventh resistor, the grid electrode of the second MOS tube is also connected with the first end of the twelfth resistor, the drain electrode of the second MOS tube is connected with the anode of the fourth diode, and the cathode of the fourth diode is connected with the chip control unit.
In a specific implementation, when a switch in the load power supply module is pressed, the second MOS transistor is turned on because the switch is connected to the CND, a power supply loop between the battery pack and the chip control unit is turned on, the chip is powered on, the chip control unit sets the P-KEY to a high level through an IO port to turn on the second triode, and normal operation of the load power supply module is further achieved to enable the battery pack to supply power to the load.
It should be noted that the ON/OFF of the load power supply module is a display element of a switch state, and is used for displaying whether the switch is pressed down.
This embodiment proposes a battery package monitoring circuit that charges, battery package monitoring circuit that charges includes: the system comprises a charging detection module, a charging response module and a state monitoring module, wherein the state monitoring module and the charging response module are respectively connected with the charging detection module, one end of the charging response module is connected with a charging inlet of a battery pack, and the other end of the charging response module is connected with the battery pack; the charging detection module is used for outputting a high-level signal to the charging response module when detecting that the charging voltage exists at the charging inlet of the battery pack; the charging response module is used for conducting a charging loop between the charging access port of the battery pack and the battery pack when the high-level signal is received, and charging the battery pack; and the state monitoring module is used for monitoring the current state and the voltage state in the charging loop when the battery pack is charged. The utility model discloses a change of voltage status and current state among the real-time supervision battery package charging circuit reaches the effective control to battery package charged state to alleviate the unusual loss when battery package charges.
In order to achieve the above object, the utility model discloses still provide a battery package charging monitoring device, battery package charging monitoring device includes as above battery package charging monitoring circuit. The specific structure of the battery pack charging monitoring circuit refers to the above embodiments, and since the battery pack charging monitoring device adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not described in detail herein.
In order to achieve the above object, the utility model discloses still provide a battery package charging monitoring equipment, battery package charging monitoring equipment includes as above battery package charging monitoring devices. The specific structure of the battery pack charging monitoring apparatus refers to the above embodiments, and since the battery pack charging monitoring is implemented by using all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and details are not repeated here.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A battery pack charge monitoring circuit, comprising: the system comprises a charging detection module, a charging response module and a state monitoring module, wherein the state monitoring module and the charging response module are respectively connected with the charging detection module, one end of the charging response module is connected with a charging inlet of a battery pack, and the other end of the charging response module is connected with the battery pack;
the charging detection module is used for outputting a high-level signal to the charging response module when detecting that the charging voltage exists at the charging inlet of the battery pack;
the charging response module is used for conducting a charging loop between the charging access port of the battery pack and the battery pack to charge the battery pack when the high-level signal is received;
and the state monitoring module is used for monitoring the current state and the voltage state in the charging loop when the battery pack is charged.
2. The battery pack charging monitoring circuit of claim 1, wherein the state monitoring module comprises a voltage monitoring unit and a current monitoring unit, the voltage monitoring unit is connected with the battery pack charging inlet, and the current monitoring unit is connected with the charging response module;
the voltage monitoring unit is used for monitoring the charging voltage in the charging loop when the battery pack is charged;
and the current monitoring unit is used for monitoring the charging current in the charging loop when the battery pack is charged.
3. The battery pack charge monitoring circuit of claim 2, wherein the voltage monitoring unit comprises a first resistor, a second resistor, and a first capacitor;
the first end of the first capacitor is connected with the second end of the first resistor, the first end of the second resistor is connected with the first end of the first capacitor, the second end of the first capacitor is grounded, the second end of the first capacitor is also connected with the second end of the second resistor, and the first end of the first resistor is connected with the charging response module.
4. The battery pack charge monitoring circuit of claim 3, wherein the current monitoring unit comprises a third resistor, a fourth resistor, a fifth resistor, a second capacitor, and a first diode;
the second end of the fifth resistor is connected with the voltage monitoring unit, the first end of the fifth resistor is connected with the anode of the first diode, the anode of the first diode is connected with the first end of the second capacitor, the anode of the first diode is further connected with the first end of the third resistor, the cathode of the first diode is connected with a charging inlet of the battery pack, the second end of the second capacitor is connected with the second end of the third resistor, the second end of the third resistor is further connected with the first end of the fourth resistor, and the second end of the fourth resistor is connected with the power supply.
5. The battery pack charge monitoring circuit of claim 4, wherein the charge detection module comprises a tenth resistor and a third diode;
an anode of the third diode is connected with a second end of the tenth resistor, a cathode of the third diode is connected with a power supply voltage, and a first end of the tenth resistor is connected with a first end of the first resistor.
6. The battery pack charging monitoring circuit of claim 5, wherein the charging response module comprises a first MOS transistor, a first triode, a second diode, a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor;
the first triode base is connected with the first end of the eighth resistor, the first triode base is further connected with the second end of the ninth resistor, the collector of the first triode is grounded, the collector of the first triode is further connected with the second end of the eighth resistor, the emitter of the first triode is connected with the second end of the seventh resistor, the source of the first MOS transistor is connected with the cathode of the second diode, the source of the first MOS transistor is further connected with the first end of the sixth resistor, the grid of the first MOS transistor is connected with the second end of the sixth resistor, the grid of the first MOS transistor is further connected with the first end of the seventh resistor, the drain of the first MOS transistor is connected with the battery pack, and the anode of the second diode is connected with the first end of the first resistor.
7. The battery pack charging monitoring circuit of claim 6, further comprising a load power module, the load power module being connected to the battery pack, the load power module being further connected to a chip control unit;
and the load power supply module is used for supplying power to the load by using the battery pack when the load works.
8. The battery pack charging monitoring circuit of claim 7, wherein the load power supply module comprises a second MOS transistor, a second triode, a fourth diode, a fifth diode, a sixth diode, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, and a fifteenth resistor;
the base of the second triode is connected with the second end of the thirteenth resistor, the base of the second triode is also connected with the first end of the fourteenth resistor, the collector of the second triode is grounded, the collector of the second triode is connected with the second end of the fourteenth resistor, the collector of the second triode is also connected with the second end of the fifteenth resistor, the emitter of the second triode is connected with the second end of the twelfth resistor, the emitter of the second triode is connected with the first end of the fifteenth resistor, the emitter of the second triode is also connected with the anode of the fifth diode, the cathode of the fifth diode is connected with the anode of the sixth diode, the source of the second MOS transistor is connected with the first end of the eleventh resistor, the source of the second MOS transistor is also connected with the battery pack, and the gate of the second MOS transistor is connected with the second end of the eleventh resistor, the grid electrode of the second MOS tube is also connected with the first end of the twelfth resistor, the drain electrode of the second MOS tube is connected with the anode of the fourth diode, and the cathode of the fourth diode is connected with the chip control unit.
9. A battery pack charging monitoring device, comprising the battery pack charging monitoring circuit according to any one of claims 1 to 8.
10. A battery pack charge monitoring device, comprising the battery pack charge monitoring apparatus of claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123317281.8U CN216851352U (en) | 2021-12-27 | 2021-12-27 | Battery pack charging monitoring circuit, device and equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123317281.8U CN216851352U (en) | 2021-12-27 | 2021-12-27 | Battery pack charging monitoring circuit, device and equipment |
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| CN216851352U true CN216851352U (en) | 2022-06-28 |
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| CN202123317281.8U Active CN216851352U (en) | 2021-12-27 | 2021-12-27 | Battery pack charging monitoring circuit, device and equipment |
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