CN206611205U - A kind of battery management system charging wake-up circuit - Google Patents

A kind of battery management system charging wake-up circuit Download PDF

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Publication number
CN206611205U
CN206611205U CN201720216042.8U CN201720216042U CN206611205U CN 206611205 U CN206611205 U CN 206611205U CN 201720216042 U CN201720216042 U CN 201720216042U CN 206611205 U CN206611205 U CN 206611205U
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China
Prior art keywords
battery management
circuit
wake
isolation module
charger
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Active
Application number
CN201720216042.8U
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Chinese (zh)
Inventor
覃耀勇
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Ciic Kechuang Robot Co Ltd
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Ciic Kechuang Robot Co Ltd
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Abstract

The utility model discloses a kind of battery management system charging wake-up circuit, wake-up circuit includes charger positive input terminal, charger negative input end, first resistor, electric capacity, isolation module and battery management system power supply;One end connection of charger positive input terminal and first resistor;The first end connection of the other end of first resistor and one end of electric capacity and isolation module;The second end connection of the other end and isolation module of charger negative input end and electric capacity;3rd end of isolation module is connected with the ground terminal of battery management system power supply;4th end of isolation module is connected with the start end of battery management system power supply.Battery management system disclosed in the utility model charges wake-up circuit, can effectively and reliably realize in the case of deep battery discharge, being not required to tear machine open can charge to battery so that battery is more convenient when using, safeguarding.

Description

A kind of battery management system charging wake-up circuit
Technical field
The utility model is related to battery management system technical field, more particularly to a kind of charging of battery management system wakes up electricity Road.
Background technology
In oil and natural gas equal energy source increasingly deficient today, it is the task of top priority to develop and find the new energy.For Existing power source, such as various types of lithium batteries, people also give great attention, have put into substantial amounts of human and material resources To research and develop.
The charge and discharge protecting of lithium battery is one of battery management system (Battery Management System, BMS) Important component, charge and discharge protecting can extend the service life of lithium battery.After lithium battery enters discharge prevention state, if Charging in time, battery will because from causing deep discharge the problems such as power consumption, so that battery management system can not normally start, It cannot charge normal.Technical staff is needed to tear machine maintenance open, can normally discharge and recharge.
Utility model content
Main purpose of the present utility model is to propose a kind of battery management system charging wake-up circuit, it is intended to solve existing The weak point of technology.
To achieve the above object, the utility model embodiment provides a kind of battery management system charging wake-up circuit, described Wake-up circuit includes:Charger positive input terminal, charger negative input end, first resistor, electric capacity, isolation module and battery management System power supply;
The charger positive input terminal is connected with one end of the first resistor;The other end of the first resistor with it is described The first end connection of one end of electric capacity and the isolation module;
The charger negative input end is connected with the other end of the electric capacity and the second end of the isolation module;
3rd end of the isolation module is connected with the ground terminal of the battery management system power supply;The of the isolation module Four ends are connected with the start end of the battery management system power supply.
Further, the wake-up circuit also includes second resistance;
One end of the second resistance is connected with the first end of the isolation module;The other end of the second resistance and institute State the second end connection of isolation module.
Further, the wake-up circuit also includes diode;
The cathode terminal of the diode is connected with the charger negative input end, the anode tap of the diode with it is described every The second end from module is connected.
Further, the isolation module is optocoupler.
The battery management system charging wake-up circuit that the utility model embodiment is provided, can effectively and reliably be realized in battery In the case of deep discharge, being not required to tear machine open can be charged to battery so that battery is more convenient when using, safeguarding.
Brief description of the drawings
The battery management system charging wake-up circuit structural representation that Fig. 1 provides for the utility model embodiment.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that specific embodiment described herein is not used to limit this only to explain the utility model Utility model.
Each embodiment of the utility model is realized referring now to accompanying drawing description.In follow-up description, using for The suffix of such as " module ", " part " or " unit " of element is represented only for being conducive to explanation of the present utility model, itself Not specific meaning.
The description for being related to " first ", " second " etc. in the utility model is only used for describing purpose, and it is not intended that referring to Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " are defined At least one this feature can be expressed or be implicitly included to two " feature.In addition, the technical scheme between each embodiment can To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs It is conflicting or when can not realize it will be understood that the combination of this technical scheme is not present, also not in the guarantor of the utility model requirement Within the scope of shield.
As shown in figure 1, a kind of battery management system charging wake-up circuit that the utility model embodiment is provided, wake-up electricity Road includes:Charger positive input terminal POWER+, charger negative input end POWER-, first resistor R1, electric capacity C1, isolation module with And battery management system power supply.
In the present embodiment, isolation module is optocoupler U1.Include light emitting diode and NPN tri- inside optocoupler U1 Level pipe, and with four ports (in figure shown in 1,2,3, the 4 of U1).
In the present embodiment, electric capacity C1 effect is that the voltage of isolation optocoupler U1 inputs is filtered.
Charger positive input terminal POWER+ is connected with first resistor R1 one end;The first resistor R1 other end and electric capacity C1 One end and optocoupler U1 first end (in figure shown in the 1 of U1) connection.
The charger negative input end POWER- and electric capacity C1 other end and optocoupler U1 the second end (2 of U1 in figure It is shown) connection.
Ground terminal (the cell tube in figure of optocoupler U1 the 3rd end (in figure shown in the 3 of U1) and battery management system power supply Shown in manage system power supply 2) connection;Optocoupler U1 the 4th end (in figure shown in the 4 of U1) and battery management system power supply Start end (in figure shown in the 1 of battery management system power supply) is connected.
Further, in the present embodiment, wake-up circuit may also include second resistance R2;
Second resistance R2 one end is connected with optocoupler U1 first end;The second resistance R2 other end and optocoupler U1 the second end connection.
Second resistance R2 effect is the starting current for increasing optocoupler U1, prevents optocoupler U1 lightly conductings.
Further, in the present embodiment, wake-up circuit may also include diode D1;
Diode D1 cathode terminal is connected with charger negative input end POWER-, diode D1 anode tap and optocoupler U1 the second end connection.
Diode D1 effect is when preventing that charger is reversed, to damage isolation optocoupler.
The utility model embodiment provide battery management system charging wake-up circuit operation principle approximately as:
After charger accesses charger positive input terminal and charger negative input end, the output current of charger passes through first Resistance R1, driving isolation optocoupler U1 is turned it on, so as to wake up battery management system power supply.
The battery management system charging wake-up circuit that the utility model embodiment is provided, can effectively and reliably be realized in battery In the case of deep discharge, being not required to tear machine open can be charged to battery so that battery is more convenient when using, safeguarding.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row His property is included, so that process, method, article or device including a series of key elements not only include those key elements, and And also including other key elements being not expressly set out, or also include for this process, method, article or device institute inherently Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this Also there is other identical element in process, method, article or the device of key element.
Preferred embodiment of the present utility model is these are only, the scope of the claims of the present utility model is not thereby limited, it is every The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in Other related technical fields, are similarly included in scope of patent protection of the present utility model.

Claims (4)

  1. The wake-up circuit 1. a kind of battery management system charges, it is characterised in that the wake-up circuit includes:Charger positive input End, charger negative input end, first resistor, electric capacity, isolation module and battery management system power supply;
    The charger positive input terminal is connected with one end of the first resistor;The other end of the first resistor and the electric capacity One end and the isolation module first end connection;
    The charger negative input end is connected with the other end of the electric capacity and the second end of the isolation module;
    3rd end of the isolation module is connected with the ground terminal of the battery management system power supply;4th end of the isolation module It is connected with the start end of the battery management system power supply.
  2. 2. a kind of battery management system charging wake-up circuit according to claim 1, it is characterised in that the wake-up circuit Also include second resistance;
    One end of the second resistance is connected with the first end of the isolation module;The other end of the second resistance with it is described every The second end from module is connected.
  3. 3. a kind of battery management system charging wake-up circuit according to claim 1, it is characterised in that the wake-up circuit Also include diode;
    The cathode terminal of the diode is connected with the charger negative input end, the anode tap of the diode and the isolation mode The second end connection of block.
  4. 4. charge wake-up circuit according to a kind of any described battery management systems of claim 1-3, it is characterised in that it is described every It is optocoupler from module.
CN201720216042.8U 2017-03-07 2017-03-07 A kind of battery management system charging wake-up circuit Active CN206611205U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720216042.8U CN206611205U (en) 2017-03-07 2017-03-07 A kind of battery management system charging wake-up circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720216042.8U CN206611205U (en) 2017-03-07 2017-03-07 A kind of battery management system charging wake-up circuit

Publications (1)

Publication Number Publication Date
CN206611205U true CN206611205U (en) 2017-11-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720216042.8U Active CN206611205U (en) 2017-03-07 2017-03-07 A kind of battery management system charging wake-up circuit

Country Status (1)

Country Link
CN (1) CN206611205U (en)

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