CN207263898U - A kind of accumulator voltage monitoring device - Google Patents
A kind of accumulator voltage monitoring device Download PDFInfo
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- CN207263898U CN207263898U CN201721246051.8U CN201721246051U CN207263898U CN 207263898 U CN207263898 U CN 207263898U CN 201721246051 U CN201721246051 U CN 201721246051U CN 207263898 U CN207263898 U CN 207263898U
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Abstract
The utility model discloses a kind of accumulator voltage monitoring device, is related to circuit monitoring technical field, including：Monitor box and the electronic circuit board being arranged in the monitor box, the electronic circuit board includes microcontroller, voltage detecting circuit, current detection circuit, warning circuit, key circuit and indicating circuit, the input terminal of the voltage detecting circuit, the current detection circuit and the key circuit with the microcontroller is connected, and the output terminal of the indicating circuit and the warning circuit with the microcontroller is connected；The voltage detecting circuit includes first voltage follower, second voltage follower and the first AD conversion module, and the current detection circuit includes the second AD conversion module.The utility model monitoring efficiency is high, and improves the reliability of monitoring device.
Description
Technical field
Circuit monitoring technical field is the utility model is related to, more particularly to a kind of accumulator voltage monitoring device.
Background technology
Storage battery is the pith for ensureing locomotive normal work, and can storage battery, which work, decides the normal of whole locomotive
Operating, storage battery power supply accessory is more, and electric power thus supplied is complicated, and each electrical accessorie working condition also differs, storage battery normal power supply
It is the basis of each electrical accessorie work.Therefore, accumulator quality quality is to improve the important step of locomotive operation quality.
In the prior art, some precautionary measures are usually taken to improve the quality of storage battery, for example, user's periodic detection stores
The voltage of battery, when determining under-voltage storage battery, under-voltage storage battery is replaced；Alternatively, inspect periodically, clean storage
Battery surface, ensures the cleaning of storage battery, and whether the surface for observing each storage battery has phenomena such as bulge, leakage, if there is bulge
Or phenomena such as leakage, then storage battery is replaced.
But the above-mentioned precautionary measures taken accumulator quality are only to rely on the daily periodic inspection of user, not from basic
On situations such as preventing storage battery under-voltage and locomotive failure occurs, monitoring efficiency is low.
The content of the invention
In view of this, the utility model provides a kind of accumulator voltage monitoring device, its monitoring efficiency is high, and improves prison
Survey the reliability of device.
The utility model is solved the above problems by following technological means：
A kind of accumulator voltage monitoring device of the utility model, including：Monitor box and it is arranged in the monitor box
Electronic circuit board, the electronic circuit board includes microcontroller, voltage detecting circuit, current detection circuit, warning circuit, presses
Key circuit and indicating circuit, the voltage detecting circuit, the current detection circuit and the key circuit with the micro-control
The input terminal connection of device processed, the output terminal of the indicating circuit and the warning circuit with the microcontroller are connected；It is described
Voltage detecting circuit includes first voltage follower, second voltage follower and the first AD conversion module, the first voltage with
It is connected with the input terminal of device with the voltage output end of the first storage battery, the input terminal of the second voltage follower and the second electric power storage
The voltage output end connection in pond, the output terminal of the output terminal of the first voltage follower and the second voltage follower with
The input terminal connection of first AD conversion module, the output terminal of first AD conversion module and the input of the microcontroller
End connection；The current detection circuit includes the second AD conversion module, and the input terminal of second AD conversion module is respectively with
The current output terminal of the current output terminal of one storage battery and the second storage battery connect, the output terminal of second AD conversion module with
The input terminal connection of the microcontroller.
Further, the warning circuit includes power amplifier and sound circuit, the input terminal of the sound circuit with it is described
The output terminal connection of microcontroller, the output terminal of the sound circuit are connected with the input terminal of the power amplifier, the power amplifier
The output terminal of circuit is connected with loudspeaker.
Further, radiator is further included, the monitor box includes box body and the box lid being hinged on above the box body, institute
The side wall for stating box body is equipped with radiator window, and the radiator includes semiconductor chilling plate, radiator fan and heat insulating mattress, described to dissipate
Hot-air fan is arranged on radiator window, and the two sides of the semiconductor chilling plate scribbles silicone grease, and the semiconductor chilling plate passes through institute
State heat insulating mattress to be fixed on the radiator fan, and the cold end of the semiconductor chilling plate is arranged in the monitor box.
Further, the microcontroller includes microcontroller STM32F207.
Further, temperature sensor is further included, the temperature sensor is arranged in the monitor box, the temperature sensing
84th pin of the 2nd pin and the microcontroller STM32F207 that device includes chip DS18B20, the chip DS18B20 connects
Connect.
Further, the first voltage follower includes the chip U1 of model LM358, the second voltage follower bag
The chip U2 of model LM358 is included, first AD conversion module includes the chip U3 of model AD7705；The chip U1's
4th pin is connected by resistance R2 with the positive voltage output end of the first storage battery, and the 5th pin of the chip U1 passes through resistance
R17 is connected with the negative voltage output terminal of the first storage battery, and the 1st pin of the chip U1 connects with the 7th pin of the chip U3
Connect, the 7th pin of the chip U1 is connected with the 8th pin of the chip U3, and the 4th pin of the chip U2 passes through resistance R3
It is connected with the positive voltage output end of the second storage battery, the 5th pin of the chip U2 is negative by resistance R18 and the second storage battery
Voltage output end connects, and the 1st pin of the chip U2 is connected with the 6th pin of the chip U3, and the 7th of the chip U2 draws
Foot is connected with the 11st pin of the chip U3, and the 1st pin of the chip U3 draws with the 30th of the microcontroller STM32F207
Foot connects, and the 4th pin of the chip U3 is connected with the 29th pin of the microcontroller STM32F207, and the 5th of the chip U3 the
Pin is connected with the 33rd pin of the microcontroller STM32F207, the 12nd pin and the microcontroller of the chip U3
The 32nd pin connection of STM32F207, the 13rd pin of the chip U3 connect with the 31st pin of the microcontroller STM32F207
Connect, the 14th pin of the chip U3 is connected with the 34th pin of the microcontroller STM32F207.
Further, second AD conversion module includes the chip U4 of model AD7705, the 6th pin of the chip U4
It is connected with the current output terminal of the first storage battery, the 11st pin of the chip U4 and the current output terminal of the second storage battery connect
Connect, the 1st pin of the chip U4 is connected with the 78th pin of the microcontroller STM32F207, the 4th pin of the chip U4
It is connected with the 81st pin of the microcontroller STM32F207, the 5th pin and the microcontroller STM32F207 of the chip U4
The connection of the 82nd pin, the 12nd pin of the chip U4 is connected with the 80th pin of the microcontroller STM32F207, the core
The 13rd pin of piece U4 is connected with the 79th pin of the microcontroller STM32F207, the 14th pin of the chip U4 with it is described
The 83rd pin connection of microcontroller STM32F207.
Further, the sound circuit includes chips W TN5_8S/8P, and the power amplifier includes chip PAM8302A, institute
The 5th pin for stating chips W TN5_8S/8P is connected with the 3rd pin of the chip PAM8302A, the chips W TN5_8S/8P's
3rd pin is connected with the 68th pin of the microcontroller STM32F207, the 4th pin of the chips W TN5_8S/8P with it is described
The 69th pin connection of microcontroller STM32F207, the 1st pin and the microcontroller STM32F207 of the chip PAM8302A
The 77th pin connection, the 5th pin and the 8th pin of the chip PAM8302A are connected with loudspeaker.
Further, USB interface chip is further included, the microcontroller is connected by the USB interface chip with USB flash disk.
A kind of accumulator voltage monitoring device of the utility model has the advantages that：
The utility model provides a kind of accumulator voltage monitoring device, passes through voltage detecting circuit and current detection circuit
Detect the voltage of the first storage battery, the voltage of electric current and the second storage battery, electric current respectively, and by the first storage battery detected
The voltage and current of voltage and current and the second storage battery is sent to microcontroller, and key circuit is used to set predeterminated voltage and default electricity
Stream, microcontroller in the voltage for determining to receive less or greater than predeterminated voltage, alternatively, being less than in the electric current for determining to receive
Or during more than predetermined current, control warning circuit is alarmed, and controls the indicator light of indicating circuit bright, facilitates user real-time
Know the voltage and current value of the first storage battery and the second storage battery, and after alarm signal is obtained, replace the storage of failure in time
Battery, monitoring efficiency are high；Finally, the utility model is equipped with radiator window on monitor box, and radiator window is equipped with radiator fan, heat dissipation
Fan is equipped with semiconductor chilling plate, can be to radiator fan and semiconductor refrigerating when needing monitoring device long-play
Piece powers on, and radiates to monitor box, prevent electronic device on electronic circuit board because longevity of service produces amount of heat and
Burn out, improve the reliability of monitoring device.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of schematic block circuit diagram of accumulator voltage monitoring device of the utility model；
Fig. 2 is a kind of circuit diagram of microcontroller of the utility model；
Fig. 3 is a kind of circuit diagram of first voltage follower of the utility model；
Fig. 4 is a kind of circuit diagram of second voltage follower of the utility model；
Fig. 5 is a kind of circuit diagram of first AD conversion module of the utility model；
Fig. 6 is a kind of circuit diagram of second AD conversion module of the utility model；
Fig. 7 is a kind of circuit diagram of warning circuit of the utility model；
Fig. 8 is the circuit diagram of a kind of key circuit and indicating circuit of the utility model；
Fig. 9 is a kind of circuit diagram of LCD MODULE of the utility model.
Embodiment
The utility model is described in detail below with reference to attached drawing, as shown in Figure 1：A kind of storage battery of the present embodiment
Voltage monitor includes：Monitor box and the electronic circuit board being arranged in the monitor box, the electronic circuit board include
Microcontroller 101, voltage detecting circuit, current detection circuit, warning circuit 103, key circuit 104 and indicating circuit 105, institute
The input terminal of voltage detecting circuit, the current detection circuit and the key circuit 104 with the microcontroller 101 is stated to connect
Connect, the output terminal of the indicating circuit 105 and the warning circuit 103 with the microcontroller 101 is connected.
The voltage detecting circuit includes first voltage follower 106,107 and first AD conversion mould of second voltage follower
Block 108, the input terminal of the first voltage follower 106 are connected with the voltage output end of the first storage battery 109, second electricity
Pressure follower 107 input terminal be connected with the voltage output end of the second storage battery 110, the first voltage follower 106 it is defeated
Input terminal of the output terminal of outlet and the second voltage follower 107 with first AD conversion module 108 is connected, described
The output terminal of first AD conversion module 108 is connected with the input terminal of the microcontroller 101；The current detection circuit includes the
Two AD conversion modules 102, the input terminal of second AD conversion module 102 current output terminal with the first storage battery 109 respectively
Connected with the current output terminal of the second storage battery 110, output terminal and the microcontroller of second AD conversion module 102
101 input terminal connection.
In the present embodiment, key circuit 104 is arranged on the surface of monitor box.
In the present embodiment, as shown in Figure 1, the warning circuit 103 includes power amplifier 1031 and sound circuit 1032, institute
The input terminal for stating sound circuit 1032 is connected with the output terminal of the microcontroller 101, the output terminal of the sound circuit 1032
It is connected with the input terminal of the power amplifier 1031, the output terminal of the power amplifier 1031 is connected with loudspeaker 111.
Further as above-mentioned technical proposal is improved, and the accumulator voltage monitoring device further includes radiator, institute
Stating monitor box includes box body and the box lid being hinged on above the box body, and the side wall of the box body is equipped with radiator window, described to dissipate
Thermal includes semiconductor chilling plate, radiator fan and heat insulating mattress, and the radiator fan is arranged on radiator window, the semiconductor
The two sides of cooling piece scribbles silicone grease, and the semiconductor chilling plate is fixed on the radiator fan by the heat insulating mattress, and
The cold end of the semiconductor chilling plate is arranged in the monitor box.
In the present embodiment, as shown in Fig. 2, the microcontroller 101 includes microcontroller STM32F207.
Further as above-mentioned technical proposal is improved, and the accumulator voltage monitoring device further includes temperature sensor
112, the temperature sensor 112 is arranged in the monitor box, and the temperature sensor 112 includes chip DS18B20, described
The 2nd pin of chip DS18B20 is connected with the 84th pin of the microcontroller STM32F207.
Specifically, temperature sensor 112 be used in real time obtain monitor box in temperature, and by the temperature detected send to
Microcontroller 101, key circuit 104 are additionally operable to setting preset temperature, and microcontroller 101 is by the temperature in the monitor box received
Compared with preset temperature, when the temperature for the monitor box for determining to receive is more than preset temperature, by warning circuit 103 into
Row alarm, so that user's unlatching semiconductor chilling plate and radiator fan radiate.
It should be noted that the network label 18b20_data in Fig. 2 represents the 2nd pin of temperature sensor 112.
In the present embodiment, as shown in Figures 3 to 5, the first voltage follower 106 includes the chip of model LM358
U1, the second voltage follower 107 include the chip U2 of model LM358, and first AD conversion module 108 includes model
For the chip U3 of AD7705；The 4th pin of the chip U1 is connected by the positive voltage output end of resistance R2 and the first storage battery 109
Connect, the 5th pin of the chip U1 is connected by resistance R17 with the negative voltage output terminal of the first storage battery 109, the chip U1
The 1st pin be connected with the 7th pin of the chip U3, the 7th pin of the chip U1 and the 8th pin of the chip U3 connect
Connect, the 4th pin of the chip U2 is connected by resistance R3 with the positive voltage output end of the second storage battery 110, the chip U2
The 5th pin be connected by resistance R18 with the negative voltage output terminal of the second storage battery 110, the 1st pin of the chip U2 and institute
The 6th pin connection of chip U3 is stated, the 7th pin of the chip U2 is connected with the 11st pin of the chip U3, the chip
The 1st pin of U3 is connected with the 30th pin of the microcontroller STM32F207, the 4th pin and the monolithic of the chip U3
The 29th pin connection of machine STM32F207, the 5th pin of the chip U3 and the 33rd pin of the microcontroller STM32F207
Connection, the 12nd pin of the chip U3 are connected with the 32nd pin of the microcontroller STM32F207, and the 13rd of the chip U3 the
Pin is connected with the 31st pin of the microcontroller STM32F207, the 14th pin and the microcontroller of the chip U3
The 34th pin connection of STM32F207.
In the present embodiment, as shown in fig. 6, second AD conversion module 102 includes the chip U4 of model AD7705, institute
The 6th pin for stating chip U4 is connected with the current output terminal of the first storage battery 109, and the 11st pin of the chip U4 and second stores
The current output terminal connection of battery 110, the 1st pin of the chip U4 connect with the 78th pin of the microcontroller STM32F207
Connect, the 4th pin of the chip U4 is connected with the 81st pin of the microcontroller STM32F207, the 5th pin of the chip U4
It is connected with the 82nd pin of the microcontroller STM32F207, the 12nd pin and the microcontroller STM32F207 of the chip U4
The connection of the 80th pin, the 13rd pin of the chip U4 is connected with the 79th pin of the microcontroller STM32F207, the core
The 14th pin of piece U4 is connected with the 83rd pin of the microcontroller STM32F207.
It should be noted that network label CV1+, network label CV1- and network label din_2 are represented and the first storage battery
Connection, network label CV2+, network label CV2- and network label din_1 represent to be connected with the second storage battery.
In the present embodiment, as shown in fig. 7, the sound circuit 1032 includes chips W TN5_8S/8P, the power amplifier
3rd pin of 1031 the 5th pin including chip PAM8302A, the chips W TN5_8S/8P and the chip PAM8302A connects
Connect, the 3rd pin of the chips W TN5_8S/8P is connected with the 68th pin of the microcontroller STM32F207, the chip
The 4th pin of WTN5_8S/8P is connected with the 69th pin of the microcontroller STM32F207, and the 1st of the chip PAM8302A the
Pin is connected with the 77th pin of the microcontroller STM32F207, the 5th pin and the 8th pin of the chip PAM8302A with
Loudspeaker 111 connects.
In the present embodiment, the physical circuit of key circuit 104 and the physical circuit of indicating circuit 105 are as shown in Figure 8.
Further as above-mentioned technical proposal is improved, and the accumulator voltage monitoring device further includes USB interface chip
113, the microcontroller 101 is connected by the USB interface chip 113 with USB flash disk 114.
In the present embodiment, USB interface chip 113 includes chip CH375.
Specifically, when user needs voltage and current, the second storage battery 110 for the first storage battery 109 that copy detection arrives
Voltage and current and monitor box in temperature when, USB flash disk 114 can be inserted into USB interface, microcontroller 101 is connect by USB
Mouthful chip 113 by the voltage and current of the first storage battery 109, the second storage battery 110 voltage and current and monitor box in
Temperature is copied in USB flash disk 114, is preserved for user.
Further as above-mentioned technical proposal is improved, as shown in figure 9, the accumulator voltage monitoring device further includes liquid
Brilliant display module 115, the LCD MODULE 115 are connected with the microcontroller 101.
Specifically, microcontroller 101 can be by LCD MODULE 115 by the voltage and current of the first storage battery 109,
Temperature in the voltage and current and monitor box of two storage batteries 110 is shown, facilitates user to watch in real time.
The utility model provides a kind of accumulator voltage monitoring device, passes through voltage detecting circuit and current detection circuit
Voltage, the electric current of the voltage of the first storage battery 109, electric current and the second storage battery 110 are detected respectively, and detect first is stored
The voltage and current of the voltage and current of battery 109 and the second storage battery 110 is sent to microcontroller 101, and key circuit 104 is used to set
Put predeterminated voltage and predetermined current, microcontroller 101 in the voltage for determining to receive less or greater than predeterminated voltage, alternatively,
When the electric current for determining to receive is less or greater than predetermined current, control warning circuit 103 is alarmed, and controls instruction electricity
The indicator light on road 105 is bright, facilitates user to know the voltage and current value of the first storage battery 109 and the second storage battery 110 in real time, and
After alarm signal is obtained, the storage battery of failure is replaced in time, and monitoring efficiency is high；Finally, the utility model is set on monitor box
There is radiator window, radiator window is equipped with radiator fan, and radiator fan is equipped with semiconductor chilling plate, when needing that monitoring device is long
Between when running, radiator fan and semiconductor chilling plate can be powered on, radiated to monitor box, prevent the electricity on electronic circuit board
Sub- device is burnt out because longevity of service produces amount of heat, improves the reliability of monitoring device.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, can be to this
The technical solution technical scheme is modified or replaced equivalently of utility model, without departing from the objective and model of technical solutions of the utility model
Enclose, it should all cover among the right of the utility model.
Claims (9)
- A kind of 1. accumulator voltage monitoring device, it is characterised in that：Including：Monitor box and the electricity being arranged in the monitor box Sub- wiring board, the electronic circuit board include microcontroller, voltage detecting circuit, current detection circuit, warning circuit, button electricity Road and indicating circuit, the voltage detecting circuit, the current detection circuit and the key circuit with the microcontroller Input terminal connection, the output terminal of the indicating circuit and the warning circuit with the microcontroller is connected；The voltage detecting circuit includes first voltage follower, second voltage follower and the first AD conversion module, and described The input terminal of one voltage follower is connected with the voltage output end of the first storage battery, the input terminal of the second voltage follower with The voltage output end connection of second storage battery, the output terminal of the first voltage follower and the second voltage follower it is defeated Input terminal of the outlet with first AD conversion module is connected, output terminal and the microcontroller of first AD conversion module The input terminal connection of device；The current detection circuit includes the second AD conversion module, and the input terminal of second AD conversion module is stored with first respectively The current output terminal of the current output terminal of battery and the second storage battery connect, the output terminal of second AD conversion module with it is described The input terminal connection of microcontroller.
- A kind of 2. accumulator voltage monitoring device according to claim 1, it is characterised in that：The warning circuit includes work( Electric discharge road and sound circuit, the input terminal of the sound circuit are connected with the output terminal of the microcontroller, the sound circuit Output terminal be connected with the input terminal of the power amplifier, the output terminal of the power amplifier is connected with loudspeaker.
- A kind of 3. accumulator voltage monitoring device according to claim 2, it is characterised in that：Radiator is further included, institute Stating monitor box includes box body and the box lid being hinged on above the box body, and the side wall of the box body is equipped with radiator window, described to dissipate Thermal includes semiconductor chilling plate, radiator fan and heat insulating mattress, and the radiator fan is arranged on radiator window, the semiconductor The two sides of cooling piece scribbles silicone grease, and the semiconductor chilling plate is fixed on the radiator fan by the heat insulating mattress, and The cold end of the semiconductor chilling plate is arranged in the monitor box.
- A kind of 4. accumulator voltage monitoring device according to claim 3, it is characterised in that：The microcontroller includes single Piece machine STM32F207.
- A kind of 5. accumulator voltage monitoring device according to claim 4, it is characterised in that：Further include temperature sensor, The temperature sensor is arranged in the monitor box, and the temperature sensor includes chip DS18B20, the chip The 2nd pin of DS18B20 is connected with the 84th pin of the microcontroller STM32F207.
- A kind of 6. accumulator voltage monitoring device according to claim 4, it is characterised in that：The first voltage follower Chip U1 including model LM358, the second voltage follower include the chip U2, the first AD of model LM358 Modular converter includes the chip U3 of model AD7705；The 4th pin of the chip U1 is connected by resistance R2 with the positive voltage output end of the first storage battery, the chip U1's 5th pin is connected by resistance R17 with the negative voltage output terminal of the first storage battery, the 1st pin and the core of the chip U1 The 7th pin connection of piece U3, the 7th pin of the chip U1 is connected with the 8th pin of the chip U3, and the of the chip U2 4 pins are connected by resistance R3 with the positive voltage output end of the second storage battery, and the 5th pin of the chip U2 passes through resistance R18 It is connected with the negative voltage output terminal of the second storage battery, the 1st pin of the chip U2 is connected with the 6th pin of the chip U3, The 7th pin of the chip U2 is connected with the 11st pin of the chip U3, the 1st pin and the microcontroller of the chip U3 The 30th pin connection of STM32F207, the 4th pin of the chip U3 connect with the 29th pin of the microcontroller STM32F207 Connect, the 5th pin of the chip U3 is connected with the 33rd pin of the microcontroller STM32F207, and the 12nd of the chip U3 draws Foot is connected with the 32nd pin of the microcontroller STM32F207, the 13rd pin and the microcontroller of the chip U3 The 31st pin connection of STM32F207, the 14th pin of the chip U3 connect with the 34th pin of the microcontroller STM32F207 Connect.
- A kind of 7. accumulator voltage monitoring device according to claim 4, it is characterised in that：Second AD conversion module Chip U4 including model AD7705, the 6th pin of the chip U4 is connected with the current output terminal of the first storage battery, described The 11st pin of chip U4 is connected with the current output terminal of the second storage battery, the 1st pin and the microcontroller of the chip U4 The 78th pin connection of STM32F207, the 4th pin of the chip U4 connect with the 81st pin of the microcontroller STM32F207 Connect, the 5th pin of the chip U4 is connected with the 82nd pin of the microcontroller STM32F207, and the 12nd of the chip U4 draws Foot is connected with the 80th pin of the microcontroller STM32F207, the 13rd pin and the microcontroller of the chip U4 The 79th pin connection of STM32F207, the 14th pin of the chip U4 connect with the 83rd pin of the microcontroller STM32F207 Connect.
- A kind of 8. accumulator voltage monitoring device according to claim 4, it is characterised in that：The sound circuit includes core Piece WTN5_8S/8P, the power amplifier include the 5th pin of chip PAM8302A, the chips W TN5_8S/8P and the core The 3rd pin connection of piece PAM8302A, the of the 3rd pin of the chips W TN5_8S/8P and the microcontroller STM32F207 68 pins connect, and the 4th pin of the chips W TN5_8S/8P is connected with the 69th pin of the microcontroller STM32F207, institute The 1st pin for stating chip PAM8302A is connected with the 77th pin of the microcontroller STM32F207, the chip PAM8302A's 5th pin and the 8th pin are connected with loudspeaker.
- A kind of 9. accumulator voltage monitoring device according to claim 4, it is characterised in that：Further include USB interface chip, The microcontroller is connected by the USB interface chip with USB flash disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721246051.8U CN207263898U (en) | 2017-09-27 | 2017-09-27 | A kind of accumulator voltage monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721246051.8U CN207263898U (en) | 2017-09-27 | 2017-09-27 | A kind of accumulator voltage monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207263898U true CN207263898U (en) | 2018-04-20 |
Family
ID=61919484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721246051.8U Active CN207263898U (en) | 2017-09-27 | 2017-09-27 | A kind of accumulator voltage monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207263898U (en) |
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2017
- 2017-09-27 CN CN201721246051.8U patent/CN207263898U/en active Active
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