CN207518312U - A kind of circuit of battery pack balancing and battery management system - Google Patents
A kind of circuit of battery pack balancing and battery management system Download PDFInfo
- Publication number
- CN207518312U CN207518312U CN201721606583.8U CN201721606583U CN207518312U CN 207518312 U CN207518312 U CN 207518312U CN 201721606583 U CN201721606583 U CN 201721606583U CN 207518312 U CN207518312 U CN 207518312U
- Authority
- CN
- China
- Prior art keywords
- module
- battery
- circuit
- battery pack
- battery cell
- 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
Abstract
This application discloses a kind of circuit of battery pack balancing, including balance module, voltage acquisition module and switch module, the balance module includes energy dissipation module and electrooptic conversion module, the energy dissipation module connects each battery cell with the electrooptic conversion module through the switch module, and the energy dissipation module is in parallel with the electrooptic conversion module, each battery cell is serially connected composition battery pack, and the voltage acquisition module connects each battery cell, for acquiring the voltage of each battery cell.In the circuit of battery pack balancing; it is in parallel with electrooptic conversion module by energy dissipation module; during the electric energy of energy dissipation module consumption battery cell; a part of electric energy of battery cell can be converted into luminous energy; so as to which larger heat will not be generated; battery management system and equipment can be prevented to be damaged due to temperature is excessively high, be conducive to protect battery management system and equipment.The application also provides a kind of battery management system, equally has the advantages that above-mentioned.
Description
Technical field
The utility model belongs to technical field of battery management, and in particular to a kind of circuit of battery pack balancing and battery management system
System.
Background technology
The accessory power supply of existing rail traffic vehicles is mostly using lead-acid battery group, typically by multiple battery cell strings
Connection gets up to form, and due to lead-acid battery group, it is easy to appear the voltage difference mistakes between different battery cells in discharge process
Greatly, as voltage difference is more than 50mV, if the larger voltage difference of long-term existence, can cause between the battery cell in lead-acid battery group
The deterioration of lead-acid battery group influences the service life of lead-acid battery group.It is poor in order to reduce the output voltage of each battery cell, lead to
It often needs to carry out the output voltage of each battery cell using voltage balance circuit balanced.Existing battery voltage balanced method
Mainly based on passive equilibrium, the method for passive equalizing voltage is the voltage by acquiring each battery cell, when one of them
Or several battery cells reach in certain value and battery pack there are during voltage differences, discharge the battery cell, make its electricity
Pressure drop is low, balanced so as to fulfill being carried out to the voltage of battery cell each in battery pack.It is but this by consuming battery cell
The voltage balancing method of electric energy can generate a large amount of heat, battery management system and equipment are adversely affected.
Utility model content
In view of the above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of battery pack balancing electricity
Road during the electric energy of energy dissipation module consumption battery cell, will not generate larger heat, can prevent battery management system
System and equipment are damaged due to temperature is excessively high, are conducive to protect battery management system and equipment.The purpose of this utility model is also
It is to provide a kind of battery management system, equally with above-mentioned advantageous effect.
The technical scheme that the utility model is provided is as follows：
A kind of circuit of battery pack balancing, including balance module, voltage acquisition module and switch module, the balance module packet
Energy dissipation module and electrooptic conversion module are included, the energy dissipation module is with the electrooptic conversion module through the switch module
Each battery cell is connected, and the energy dissipation module is in parallel with the electrooptic conversion module, each battery cell is serially connected group
Into battery pack, the voltage acquisition module connects each battery cell, for acquiring the voltage of each battery cell.
Further, the battery cell both ends are respectively connected with safety element.
Further, the both ends of the battery cell are connected with the protector of transient current or instantaneous voltage, and the guarantor
Shield device is connected with the safety element, and the protector is in parallel with the balance module.
Further, the connectivity port of the voltage acquisition module and the battery cell is equipped with protective resistance.
Further, include overflow protecting element in the electrooptic conversion module.
Further, the voltage acquisition module is parallel with filter circuit.
Further, the voltage balance circuit is arranged on balancing disk, and the balancing disk is equipped with temperature sensor, institute
Temperature sensor is stated for detecting the temperature of balancing disk.
A kind of battery management system, the battery management system include above-mentioned circuit of battery pack balancing.
Circuit of battery pack balancing provided by the utility model includes voltage acquisition module, energy dissipation module and electric light
Modular converter, the voltage at voltage acquisition module acquisition battery cell both ends, presets when the voltage difference of battery cell reaches
Voltage threshold when, switch module connection energy dissipation module and electrooptic conversion module, energy dissipation module is used for battery list
The part electric energy of body dissipates, and the voltage difference in battery pack between each battery cell is made to be maintained in OK range, so as to make electricity
The voltage of pond group reaches balanced, since energy dissipation module is in parallel with electrooptic conversion module, can reduce the work(of energy dissipation module
Rate, during the electric energy of energy dissipation module consumption battery cell, electrooptic conversion module can be by a part for battery cell
Electric energy is converted into luminous energy, and balance module is made not generate larger heat in the voltage course of balancing battery monomer or battery pack,
Battery management system and equipment can be prevented to be damaged due to temperature is excessively high, reduce the battery management system failure brought by Wen Sheng
Risk, so as to be conducive to protect battery management system and equipment.The application also provides a kind of battery management system, including the electricity
Pond group equalizing circuit, equally has the advantages that above-mentioned.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or it will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments described in application, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the schematic block diagram of circuit of battery pack balancing that the utility model embodiment provides；
Fig. 2 is the schematic block diagram of another circuit of battery pack balancing that the utility model embodiment provides；
Fig. 3 is the structure chart of circuit of battery pack balancing that the utility model embodiment provides.
Reference sign：Battery cell CELL；Resettable fuse F1；Resettable fuse F2；TVS diode D1；
Voltage acquisition entrance C1-IN, C2-IN；Protective resistance R2；Protective resistance R3；Protective resistance R4；Equalizing resistance R5；Filter capacitor
C；LED light emitting diodes L；N-MOSFET triodes D2；Control switch S.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical solution in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
Technical staff's all other embodiments obtained without making creative work should all belong to the application protection
Range.
As shown in Figure 1, a kind of circuit of battery pack balancing provided in this embodiment, including balance module, voltage acquisition module
And switch module, the balance module include energy dissipation module and electrooptic conversion module, the energy dissipation module with it is described
Electrooptic conversion module connects each battery cell, and the energy dissipation module and the electrooptic conversion module through the switch module
Parallel connection, each battery cell are serially connected composition battery pack, and the voltage acquisition module connects each battery cell, for acquiring each electricity
The voltage of pond monomer.
Circuit of battery pack balancing provided in this embodiment includes voltage acquisition module, energy dissipation module and electric light and turns
Change the mold block, the voltage at voltage acquisition module acquisition battery cell both ends, when the voltage difference of battery cell reaches preset
During threshold value, switch module connection energy dissipation module and electrooptic conversion module, energy dissipation module are used for the portion of battery cell
Electric energy is divided to dissipate, the voltage difference in battery pack between each battery cell is made to be maintained in OK range, so as to make battery pack
Voltage reaches balanced, since energy dissipation module is in parallel with electrooptic conversion module, in energy dissipation module consumption battery cell
During electric energy, a part of electric energy of battery cell can be converted into luminous energy by electrooptic conversion module, the heat generated when luminous
It is smaller, and the power of energy dissipation module can be also reduced, so as to reduce the heat of energy dissipation module generation, make balance module
Larger heat will not be generated in the voltage course of balancing battery monomer or battery pack, can prevent battery management system and equipment because
Temperature is excessively high and is damaged, and thereby reduces the risk of battery management system failure brought by Wen Sheng, is conducive to protection electricity
Pond manages system and equipment.The structure of this circuit of battery pack balancing is simple, in battery pack the equilibrium of each single battery do not interfere with each other,
It can be carried out at the same time, shorten time for balance, improve work efficiency.
Include LED light emitting diodes in electrooptic conversion module, include equalizing resistance in energy dissipation module, by LED
Light emitting diode is in parallel with equalizing resistance, it is possible to the power of equalizing resistance reduced, it is special using the photoelectricity of LED light emitting diodes
Property, the part electric energy in battery cell can be converted to luminous energy consumption, since LED light emitting diodes are cold light sources, when shining
The heat very little of generation, the heat generated when can effectively reduce using equalization function, reduces because Wen Sheng is to battery management system
The failure risk brought.
Certainly, during electric voltage equalization, in addition to the electric energy of battery cell is converted into luminous energy using electro-optic conversion mould
Outside block, other energy conversion modules can also be used, the electric energy in battery cell is converted into other forms other than non-thermal energy
Energy, such as convert electric energy to kinetic energy.
In order to which scheme is made more to optimize, in the present embodiment, as shown in Fig. 2, control module is connected on voltage acquisition module,
And switch module is connect with control module, and voltage threshold is preset in control module, control module is adopted according to voltage acquisition module
The voltage of each battery cell collected, and the voltage difference of each battery cell is calculated, when voltage difference is more than voltage threshold (hereafter
Middle abbreviation excessive voltage difference) when, control module control switch module connects energy dissipation module and energy transfer module, opens
Equalization function carries out the voltage of battery pack balanced.The voltage difference of each battery cell is calculated, concretely, with each battery cell
In voltage value subtract minimum amount of voltage that and obtain voltage difference, when voltage difference is more than voltage threshold, control module control connects
The switch module being connected in the battery cell with excessive voltage difference is connected, and makes energy dissipation module and energy transfer module pair
The voltage of the battery cell dissipates, so as to fulfill the electric voltage equalization of battery pack.
Wherein, the battery cell both ends are respectively connected with safety element.Safety element can be resettable fuse or guarantor
Dangerous resistance for carrying out overcurrent protection to the circuit in battery cell, avoids impacting battery.
The present embodiment is preferred, and the both ends of the battery cell are connected with transient current or voltage protector, and the guarantor
Shield device is connected with the safety element, and the protector is in parallel with the balance module.Concretely transient state inhibits two to protector
Pole pipe (TVS), after the instantaneous voltage in circuit is more than normal working voltage, TVS diode just generates snowslide, is supplied to instantaneous
One super-low resistance access of electric current, transient current is by TVS diode, so as to avoid that dissipation module, electro-optic conversion mould can be connected
Block and voltage acquisition module play the role of protection to it；After transient pulse terminates, TVS diode restores high resistant automatically
State, entire circuit enter normal voltage.
More optimize, the connectivity port of the voltage acquisition module and the battery cell is equipped with protective resistance.Each
Connectivity port sets protective resistance, for protecting the voltage acquisition module connected in circuit.
Preferably, include overflow protecting element in the electrooptic conversion module.Overflow protecting element can be current limliting electricity
Resistance, current-limiting resistance connects with LED light emitting diodes, and electric current can be prevented in circuit excessive and LED light emitting diodes are damaged.
Wherein, the voltage acquisition module is parallel with filter circuit.Specifically, filter capacitor is equipped in filter circuit, filter
Wave capacitance is in parallel with voltage acquisition module, can filter out the interference from battery cell, is generated in the also absorbable circuit course of work
Current fluctuation interference so that the working performance of voltage acquisition module more stablize.
In the present embodiment, the voltage balance circuit is arranged on balancing disk, and the balancing disk is equipped with temperature sensor,
The temperature sensor is used to detect the temperature of balancing disk.Temperature sensor is connect with control module, in the control module in advance
Safe temperature value is set, when the temperature of temperature sensor detection is no more than safe temperature value, there can be excessive electricity to whole
The battery cell of pressure difference connects equalization function, alternative when the temperature of temperature sensor detection is higher than safe temperature value
The battery cell to part with excessive voltage difference connects equalization function.
In the present embodiment, as shown in figure 3, circuit of battery pack balancing is specifically described for a battery cell.Battery
Monomer CELL both ends are connected separately with resettable fuse F1, F2, and TVS diode D1 is connected on resettable fuse F1, F2
In circuit, and TVS diode D1 is in parallel with balance module, both end voltage acquisition entrance C1-IN, C2-IN of battery cell CELL
The connectivity port of connection voltage acquisition module, battery cell CELL and voltage acquisition module is respectively equipped with protective resistance R3, R4, electricity
Pressure acquisition module is parallel with filter capacitor C, and balance module connects in circuit through switch module, and balance module includes equalizing resistance
R5 and LED light emitting diode L, equalizing resistance R5 and LED light emitting diode L are in parallel, and LED light emitting diodes L institutes are in circuit
Current-limiting resistance R1 is in series with, LED light emitting diodes L is damaged with preventing in circuit electric current excessive, switch module includes
N-MOSFET triodes D2 and control switch S, and control switch connectivity port is in series with protective resistance R2, and control switch S is used to control
System turns on or off the equalization function of balance module.
A kind of battery management system, the battery management system include above-mentioned circuit of battery pack balancing.The battery management system
For system equally during the electric energy of energy dissipation module consumption battery cell, electrooptic conversion module can be by one of battery cell
Point electric energy is converted into luminous energy, can reduce the power of energy dissipation module, makes balance module in balancing battery monomer or battery pack
Larger heat will not be generated in voltage course, battery management system and equipment can be prevented to be damaged due to temperature is excessively high, and then
The risk of battery management system failure brought by Wen Sheng is reduced, is conducive to protect battery management system and equipment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide range consistent with features of novelty.
Claims (9)
1. a kind of circuit of battery pack balancing, including balance module, voltage acquisition module and switch module, which is characterized in that described
Balance module includes energy dissipation module and electrooptic conversion module, and the energy dissipation module is with the electrooptic conversion module through institute
It states switch module and connects each battery cell, and the energy dissipation module is in parallel with the electrooptic conversion module, each battery cell
Composition battery pack is serially connected, the voltage acquisition module connects each battery cell, for acquiring the voltage of each battery cell.
2. circuit of battery pack balancing according to claim 1, which is characterized in that the battery cell both ends are respectively connected with guarantor
Dangerous element.
3. circuit of battery pack balancing according to claim 2, which is characterized in that the both ends of the battery cell are connected with wink
When electric current or instantaneous voltage protector, and the protector is connected with the safety element, the protector with it is described balanced
Wired in parallel.
4. circuit of battery pack balancing according to claim 1, which is characterized in that the voltage acquisition module and the battery
The connectivity port of monomer is equipped with protective resistance.
5. circuit of battery pack balancing according to claim 1, which is characterized in that included in the electrooptic conversion module
Flow protection element.
6. circuit of battery pack balancing according to claim 1, which is characterized in that the voltage acquisition module is parallel with filtering
Circuit.
7. according to the circuit of battery pack balancing described in claim 1 to claim 6 any one, which is characterized in that the electricity
Pressure equalizing circuit is arranged on balancing disk, and the balancing disk is equipped with temperature sensor, and the temperature sensor is equal for detecting
The temperature of weighing apparatus plate.
8. a kind of battery management system, which is characterized in that the battery management system is appointed including claim 1 to claim 6
Circuit of battery pack balancing described in meaning one.
9. a kind of battery management system, which is characterized in that the battery pack that the battery management system is included described in claim 7 is equal
Weigh circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721606583.8U CN207518312U (en) | 2017-11-27 | 2017-11-27 | A kind of circuit of battery pack balancing and battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721606583.8U CN207518312U (en) | 2017-11-27 | 2017-11-27 | A kind of circuit of battery pack balancing and battery management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207518312U true CN207518312U (en) | 2018-06-19 |
Family
ID=62541446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721606583.8U Active CN207518312U (en) | 2017-11-27 | 2017-11-27 | A kind of circuit of battery pack balancing and battery management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207518312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009945A (en) * | 2019-12-25 | 2020-04-14 | 孚能科技(赣州)股份有限公司 | Photoelectric conversion-based battery pack equalization circuit and equalization method |
-
2017
- 2017-11-27 CN CN201721606583.8U patent/CN207518312U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009945A (en) * | 2019-12-25 | 2020-04-14 | 孚能科技(赣州)股份有限公司 | Photoelectric conversion-based battery pack equalization circuit and equalization method |
| CN111009945B (en) * | 2019-12-25 | 2021-11-23 | 孚能科技(赣州)股份有限公司 | Photoelectric conversion-based battery pack equalization circuit and equalization method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103401224B (en) | A kind of multi-lithium-batterprotection protection system | |
| CN102664454B (en) | Non-floating charging type substation direct current power supply system based on iron lithium battery | |
| CN101938015B (en) | Equalizing charge management system of lithium ion power battery pack | |
| CN202190065U (en) | Battery protective circuit | |
| CN101425694A (en) | Equalized charging apparatus used for series batteries | |
| CN104064827A (en) | Nickel-metal hydride battery pack with safety protection system | |
| CN207518312U (en) | A kind of circuit of battery pack balancing and battery management system | |
| CN203747465U (en) | Battery equalization charging device based on ZigBee wireless network | |
| CN204361769U (en) | A kind of power circuit with solar energy and civil power duplicate supply interface | |
| CN104993575A (en) | Power supply management system used for bicycle station | |
| CN104505939B (en) | The photovoltaic cell lightning protection device monitored with photovoltaic cell from damage detection | |
| CN207398829U (en) | A kind of intelligent power system based on DSP | |
| US20170040937A1 (en) | Electrical energy storage module for device for converting photovoltaic energy into electrical energy | |
| CN205320030U (en) | Photovoltaic power generation system of detectable and harm of elimination hot spot effect | |
| CN206226085U (en) | Lithium battery heating protecting device | |
| CN205986208U (en) | Emergency power source with balanced charge control module | |
| CN205986157U (en) | Hybrid AC/DC power supply system | |
| CN105811357B (en) | Current foldback circuit and the AI modules that the current foldback circuit is set | |
| CN104037899B (en) | A kind of photovoltaic plant Large Copacity energy storage battery operational protection system | |
| CN108173298A (en) | A kind of balancing control circuit of power battery module | |
| CN204809332U (en) | Can fill battery of full electricity fast | |
| CN210350810U (en) | Power supply charging protection device | |
| CN208805748U (en) | A kind of novel flow equalizing circuit | |
| CN207835135U (en) | A kind of super capacitor protection circuit | |
| CN207426665U (en) | Current transformer and its secondary side protective arrangement for limiting output voltage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |