CN107069884A - A kind of battery pack open circuit protector - Google Patents
A kind of battery pack open circuit protector Download PDFInfo
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- CN107069884A CN107069884A CN201710341179.0A CN201710341179A CN107069884A CN 107069884 A CN107069884 A CN 107069884A CN 201710341179 A CN201710341179 A CN 201710341179A CN 107069884 A CN107069884 A CN 107069884A
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- open circuit
- battery
- battery pack
- circuit protector
- pack open
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- 230000001012 protector Effects 0.000 title claims abstract description 72
- 238000003860 storage Methods 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 39
- 239000000203 mixture Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 12
- 230000008447 perception Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000007689 inspection Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a kind of battery pack open circuit protector; often section battery in one group storage battery group is connected in parallel to a battery pack open circuit protector; the battery pack open circuit protector includes one group of diode group; diode group is constituted or is connected in parallel by multiple Schottky diodes by a Schottky diode and constituted; the negative pole of diode group and the positive terminal of battery are connected, and the positive pole of diode group and the negative terminal of battery are connected；Advantage is that simple in construction, wiring is simple, can automatically detect the battery of open fault, and can automatic emergency processing battery pack open circuit failure, and actuation time is short.
Description
Technical field
The present invention relates to a kind of battery pack open circuit protection device, more particularly, to a kind of battery pack open circuit protector.
Background technology
Batteries are used as the important emergent standby electricity of wide variety of straight-flow system in the power systems such as transformer station, power plant
Source,, may once breaking down with extremely important effect as the uninterrupted emergency power supplies of the USP of important department or mechanism
Major accident can be led to.Especially need that batteries make back-up source by taking transformer station as an example, in transformer station is all important load.
And in numerous fault types of batteries, battery pack open circuit failure is one of failure the most serious, whole group can be directly resulted in
Batteries can not normal external output voltage electric current.
So-called battery " open circuit " phenomenon, refers to that internal resistance constantly increases, more than certain when battery run time is longer
After value, battery just normally can not be exported externally, battery tension rapid drawdown, or even backward voltage occur, internal equivalent to " opening
Road ", similar to cutoff circuit.In one group storage battery group, if a section or a few section battery appearance " open circuit " phenomenons, then
When needing supplying power for outside, voltage dip occurs in whole group batteries, it is impossible to normal work.Hereinafter, with an experimental simulation
Battery " open circuit " phenomenon explains this phenomenon particularly as some canonical parameter.Set battery of the experimental situation as 52 section 2V
There is the battery that a section is opened a way in the batteries of composition, extraneous load current is 30A, supplied by AC/DC electricity, experiment test：Handing over
Unexpected dead electricity is flowed, batteries need supplying power for outside moment, the voltage change situation of batteries.Fig. 1 was given at 1.8 seconds
Exchange unexpected dead electricity, the voltage change situation of whole group batteries.As shown in Figure 1, with the presence of section battery " open circuit " phenomenon
When, whole group accumulator battery voltage moment rapid drawdown 40V, this experimental phenomena are if occur in transformer station, then the weight in transformer station
Wanting load, moment can not normal work.
At present, the protection for battery pack open circuit does not obtain enough attention in actual applications, does not form automatic
The emergency protection method of change.Traditional method is to find failure, or batteries by artificial periodic inspection batteries
Supply voltage wretched insufficiency, which causes to produce important load, during supplying power for outside just manually to be rushed to repair after normal work accident.
Wherein, the process of the method for artificial periodic inspection is：Every three months or half a year, cut-out batteries connect all loads, to storing
Battery carries out the electric discharge of verification property, so as to understand accumulator property.The method wastes time and energy, and time and process are all uncontrollable.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of simple battery pack open circuit protection of simple in construction, wiring
Device, it can automatically detect the battery of open fault, and can automatic emergency processing battery pack open circuit failure, and during action
Between it is short.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：A kind of battery pack open circuit protector, its feature
It is：Often section battery in one group storage battery group is connected in parallel to a battery pack open circuit protector, and the battery pack open circuit is protected
Protecting device includes one group of diode group, and described diode group is made up of a Schottky diode or by multiple Schottky diodes
Composition is connected in parallel, the negative pole of described diode group is connected with the positive terminal of described battery, described two grades
The positive pole of pipe group is connected with the negative terminal of described battery.
The battery pack open circuit protector, which also includes one, to be used to prevent the reversed fuse of described Schottky diode, institute
The fuse stated is connected in series with described diode group, i.e., fuse is serially connected with the negative pole of diode group and the positive pole of battery
Between binding post, or fuse is serially connected between the positive pole of diode group and the negative terminal of battery.Work as Schottky
When the positive pole and reversed negative pole of diode, battery and the battery pack open circuit protector are protected by fuse wire.
The battery pack open circuit protector, which also includes one, is used for the open circuit detector for detecting whether described battery opens a way,
Described open circuit detector is made up of an afterflow detection coil and one piece of control board, described afterflow detection coil and institute
The diode group stated is connected in series, i.e., afterflow detection coil is serially connected with the positive pole of diode group and the negative terminal of battery
Between, or afterflow detection coil is serially connected between the negative pole of diode group and the positive terminal of battery, described control
Be provided with circuit board for detect the magnetic field that described afterflow detection coil is produced hall position sensor, for perceiving
First temperature-sensitive component of the temperature for the Schottky diode stated, the second temperature-sensitive component for sense ambient temperature, break-make
Whether opened a way by described battery signal relay, the single-chip microcomputer of determination, the output end of described hall position sensor, institute
The output end for the first temperature-sensitive component stated, the output end of the second described temperature-sensitive component connect with described single-chip microcomputer respectively
Connect, the coil electricity loop of described signal relay is controlled by described single-chip microcomputer, and the contact of described signal relay is defeated
Go out end to be connected with outside host computer.The afterflow detection coil of setting is in addition to the magnetic field needed for providing control board, and it is also
One inductance damping, when by accidental backward voltage interference, can prevent voltage x current from being mutated, so as to prevent Xiao Te
Based diode misoperation；The control board of setting is as auxiliary, mainly alarm and to upper transmission information, i.e., by signal after
Electrical equipment be connected with outside host computer, automatic report and alarm information, allows remote personnel understanding battery pack open circuit situation, itself and major loop
（Schottky diode and afterflow detection coil are constituted）Big current loop is completely physically and electrically upper to isolate, it is ensured that control
Between circuit board and major loop in addition to magnetic field, have no effect, even if so that ensure that control board break down, also will not
Major loop normally detection and action are influenceed, has accomplished to ensure that the reliability and stability of major loop to greatest extent.In Xiao Te
While based diode is turned on, electric current is flowed through in afterflow detection coil, magnetic field, Schottky diode operational heat, radiating is produced
Device heats up, and electric current is bigger, and magnetic field is stronger, and also temperature rise is bigger；Key componentses in control board are hall position sensor
Detection senses the magnetic field produced in afterflow detection coil, and another two key componentses are the first temperature-sensitive component and the second temperature-sensitive
Component correspondence detects the temperature and environment temperature of Schottky diode；Hall position sensor and the first temperature-sensitive component and
Signal is transferred to single-chip microcomputer by the second temperature-sensitive component, when magnetic field intensity exceedes limit value, temperature rise（The temperature of Schottky diode
And the difference of environment temperature）When being met more than the two conditions of limit value simultaneously, single-chip microcomputer is it may determine that this battery pack open circuit is protected
Device action is protected, by signal relay to upper outputting alarm signal.
Described afterflow detection coil is made up of bar magnet and the seal wire being set around outside described bar magnet, and the one of described seal wire
End is connected with the positive pole of described diode group, and the described other end of seal wire connects with the negative terminal of described battery
Connect, described hall position sensor is located at the surface of described bar magnet and close to described bar magnet；Or described afterflow inspection
Test coil is made up of bar magnet and the seal wire being set around outside described bar magnet, one end of described seal wire and described diode group
Negative pole is connected, and the other end of described seal wire is connected with the positive terminal of described battery, and described hall position is passed
Sensor is located at the surface of described bar magnet and close to described bar magnet.
The line footpath of described seal wire is 2~5 millimeters.Generally, the seal wire that line footpath is 3 millimeters, big line can be chosen
The seal wire in footpath can pass through high current.
The power module powered for described control board is additionally provided with described control board.
It is additionally provided with described control board for indicating the indicator lamp whether described battery opens a way, it is described
Indicator lamp is connected with described single-chip microcomputer.By setting indicator lamp, when open fault occurs for battery, single-chip microcomputer control is indicated
Lamp is flashed to point out battery pack open circuit fault warning, enables patrol officer is open-and-shut to recognize that battery is opened a way
Failure.
The battery pack open circuit protector also includes a radiator, and described Schottky diode is installed on described radiating
On device.By increasing radiator, effectively Schottky diode can be radiated, therefore, it is possible to greatly increase the pole of Schottky two
The electrical current of pipe, it is ensured that there is the sufficiently long time to remove the open fault of the battery of processing open circuit；Radiator can be used
Aluminium radiator.
The battery pack open circuit protector also includes heat-conducting plastic shell, described heat-conducting plastic shell by housing and with
The lid composition that described housing is engaged, described radiator is installed in the inner chamber of described housing, described afterflow inspection
Test coil is installed in the way of described bar magnet is placed vertically in the inner chamber of described housing, and described control board is installed
In the inner chamber of described housing and described control board is located at the top of described afterflow detection coil, make it is described suddenly
Your position sensor is located at the surface of described bar magnet and close to the top of described bar magnet, the first described temperature-sensitive component
It is placed on described radiator or on described Schottky diode, the second described temperature-sensitive component is suspended from described housing
In inner chamber.It is Schottky diode, control board and each first device being arranged in control board using heat-conducting plastic shell
The radiating of part, which is provided, to be ensured；First temperature-sensitive component is used to perceiving the temperature of Schottky diode, thus its can be placed in it is scattered
On hot device or on Schottky diode, generally selection is placed on radiator；Second temperature-sensitive component is used to perceive environment
Temperature, therefore it is suspended from the inner chamber of housing.
It is formed with the outer wall of described housing on multiple radiating grooves, described housing and offers multiple thermal vias.If
Radiating groove and thermal vias are put, radiating effect can be effectively increased.
Compared with prior art, the advantage of the invention is that：
1）When batteries are in charged state, or in supplying power for outside state but all normal all batteries, all Xiao Te
Based diode is in cut-off state, and battery pack open circuit protector is to disconnect disengaged position for whole batteries loop,
Any influence will not be produced on batteries；When batteries be in supplying power for outside state, but it is a certain section battery performance
Extreme difference, even results in the generation of " open circuit " phenomenon, and the Schottky diode that other batteries are connect by the battery of open circuit is provided
Forward voltage, Schottky diode is in the conduction state, the battery of short circuit open circuit, produces afterflow effect, other normal storages
Battery continues externally to power to the load by Xiao Te diode circuits, automatic accurate can know the electric power storage in the presence of open circuit phenomenon
Pond, at the same can automatic emergency solve battery pack open circuit failure there is provided the afterflow passage of Large Copacity high current.
2）When open fault occurs for a certain section battery, the pole of Schottky two that other batteries are connect by the battery of open circuit
Pipe provides forward voltage, and Schottky diode is in the conduction state, due to the conducting voltage very little of Schottky diode in itself,
The turn-on action time is extremely short, thus the battery pack open circuit protector operating time of protection be also it is extremely short, generally 1~3 millisecond,
It is 5 milliseconds of the voltage dip duration allowed less than transformer station's important load, pratical and feasible.
3）The battery pack open circuit protector for battery pack open circuit failure can automatic emergency solve, maintainer can be given
There is time enough to be overhauled.
4）Only include several Schottky for the battery pack open circuit protector of the often section battery in a group storage battery group
Diode, is not only simple in structure, and wiring is simple.
5）Schottky diode, afterflow detection coil and control board cooperate, and can accomplish the storage of protection open circuit
While battery, reliable detection is patrolled with judging that battery whether there is open fault, and providing eye-catching indicator lamp prompting scene
Inspection personnel clearly judge which section battery has open fault, give host computer to send alarm and indicate, remote personnel can also be without
Reach the spot i.e. can be known fault message；Afterflow detection coil coordinates with control board, and the means of predominantly detecting are magnetic field and temperature
Degree, the high-tension major loop of high current has been accomplished to isolate with the control loop of low current low-voltage on electrically and physically, reliably
Property and safe.
Brief description of the drawings
Fig. 1 is is not provided with battery pack open circuit protector, the voltage of whole group batteries when exchanging unexpected dead electricity at 1.8 seconds
Situation of change schematic diagram；
Fig. 2 is the composition and connection diagram of the battery pack open circuit protector of embodiment one；
Fig. 3 is the composition and connection diagram of the battery pack open circuit protector of embodiment two；
Fig. 4 is the composition and connection diagram of the battery pack open circuit protector of embodiment three；
Fig. 5 for embodiment three battery pack open circuit protector in control board composition and connection diagram；
Fig. 6 is the integrally-built schematic cross-sectional view of the battery pack open circuit protector of example IV；
Fig. 7 is the integrally-built side view of the battery pack open circuit protector of example IV；
Fig. 8 is that a group storage battery group has installed the battery pack open circuit protector additional and has been not charged with the voltage of the battery pack open circuit protector
Correlation curve schematic diagram；
The ON time schematic diagram that Fig. 9 acts for the Schottky diode in battery pack open circuit protector.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment one：
A kind of battery pack open circuit protector that the present embodiment is proposed, as shown in Fig. 2 the often section battery in a group storage battery group is simultaneously
Connection is connected with a battery pack open circuit protector, and the battery pack open circuit protector includes one group of diode group and a fuse 1,
Diode group is made up of a Schottky diode 2, and fuse 1 is connected in series with Schottky diode 2, i.e. Schottky diode
2 negative pole is connected with one end of fuse 1, and the other end of fuse 1 and the positive terminal of battery are connected, Schottky
The positive pole of diode 2 and the negative terminal of battery are connected, and fuse 1 is used to prevent that Schottky diode 2 is reversed, works as Xiao
When the positive pole and reversed negative pole of special based diode 2, battery and the battery pack open circuit is protected to protect by fuse wire 1
Device.
In the present embodiment, for reduced-capacity load, one group of diode group can be only by the low power pole of Schottky two
Pipe 2 is constituted；For big capacity load, one group of diode group only can be made up of a powerful Schottky diode 2.
In the present embodiment, fuse 1 uses prior art；Schottky diode 2 uses prior art, and it also can be by existing
Research and development have or follow-up have the reverse cut-off characteristics of forward conduction, high current can be born（0~100A）, forward conduction voltage
Short other components of small, actuation time are substituted.
Embodiment two：
A kind of battery pack open circuit protector that the present embodiment is proposed, as shown in figure 3, the often section battery in a group storage battery group is simultaneously
Connection is connected with a battery pack open circuit protector, and the battery pack open circuit protector includes one group of diode group and a fuse 1,
Diode group is connected in parallel by two Schottky diodes 2 and constituted, and fuse 1 is connected in series with diode group, i.e. diode group
Negative pole be connected with one end of fuse 1, and fuse 1 the other end and battery positive terminal connect, diode
The positive pole of group and the negative terminal of battery are connected, and fuse 1 is used to prevent that Schottky diode 2 is reversed, works as Schottky
When the positive pole and reversed negative pole of diode 2, battery and the battery pack open circuit protector are protected by fuse wire 1.
In the present embodiment, for big capacity load, one group of diode group can be by multiple low power Schottky diodes 2
It is connected in parallel composition.
Embodiment three：
A kind of battery pack open circuit protector that the present embodiment is proposed, as shown in Figure 4 and Figure 5, it is the storage proposed in embodiment one
One is added on the basis of battery open circuit protector is used to detect the open circuit detector whether battery opens a way, open circuit detector
It is made up of an afterflow detection coil 3 and one piece of control board 4, afterflow detection coil 3 is connected in series with diode group, specifically
It is serially connected between the positive pole of diode group and the negative terminal of battery, is set in control board 4 for afterflow detection coil 3
Be equipped with for detect afterflow detection coil 3 produce magnetic field hall position sensor 41, for perceiving Schottky diode 2
Whether the first temperature-sensitive component 42 of temperature, the second temperature-sensitive component 43 for sense ambient temperature, break-make are opened by battery
Signal relay 44, single-chip microcomputer 45, the power module powered for control board 4 of road determination（Not shown in figure）, for referring to
Show the indicator lamp 46 whether battery opens a way, the output end of hall position sensor 41, the output end of the first temperature-sensitive component 42,
The output end of second temperature-sensitive component 43 is connected with single-chip microcomputer 45 respectively, and the coil electricity loop of signal relay 44 is by single-chip microcomputer
45 controls, the contact output end of signal relay 44 and outside host computer（Not shown in figure）Connection.The afterflow detection line of setting
Circle 3 is in addition to the magnetic field needed for providing control board 4, and it is also an inductance damping, dry by accidental backward voltage
When disturbing, voltage x current can be prevented to be mutated, so as to prevent the misoperation of Schottky diode 2；The control board 4 of setting is made
For auxiliary, mainly alert and to upper transmission information, i.e., be connected by signal relay 44 with outside host computer, it is automatic above to report
Alert information, allows remote personnel to understand battery pack open circuit situation, itself and major loop（Schottky diode 2 and the structure of afterflow detection coil 3
Into）Big current loop is completely physically and electrically upper to isolate, it is ensured that between control board 4 and major loop in addition to magnetic field,
Have no effect, even if so as to ensure that control board 4 breaks down, not interfering with major loop normally detection and action yet,
The reliability and stability of major loop are accomplished to ensure that to greatest extent.While Schottky diode 2 is turned on, afterflow inspection
Electric current is flowed through in test coil 3, magnetic field is produced, the operational heat of Schottky diode 2, radiator heating, electric current is bigger, and magnetic field is got over
By force, also temperature rise is bigger；Key componentses in control board 4 are that the detection of hall position sensor 41 senses afterflow detection line
The magnetic field produced in circle 3, another two key componentses are that the first temperature-sensitive component 42 and the second temperature-sensitive component 43 correspondence are detected
To the temperature and environment temperature of Schottky diode 2；The temperature-sensitive component 42 of hall position sensor 41 and first and the second temperature-sensitive
Signal is transferred to single-chip microcomputer 45 by component 43, when magnetic field intensity exceedes limit value, temperature rise（The temperature of Schottky diode 2 with
The difference of environment temperature）When being met more than the two conditions of limit value simultaneously, single-chip microcomputer 45 is it may determine that this battery pack open circuit is protected
Device action is protected, passes through 44 pairs of upper outputting alarm signals of signal relay.By setting indicator lamp 46, when open circuit event occurs for battery
During barrier, the control indicator lamp 46 of single-chip microcomputer 45 is flashed to point out battery pack open circuit fault warning, enables patrol officer very clear
Recognize that battery there occurs open fault.
In the present embodiment, afterflow detection coil 3 is as shown in fig. 6, it is by bar magnet 31 and the seal wire being set around outside bar magnet 31
32 compositions, one end of seal wire 32 is connected with the positive pole of diode group, the other end of seal wire 32 and the negative terminal of battery
Connection, hall position sensor 41 is located at the surface of bar magnet 31 and close to bar magnet 31.
In the present embodiment, the line footpath of seal wire 32 is 2~5 millimeters.Generally, it is 3 millimeters that can choose line footpath
Seal wire, the seal wire of big line footpath can pass through high current.
In the present embodiment, afterflow detection coil 3 is using conventional coil, such as enamel-covered wire coiling or plain conductor around
Coil processed, it can be substituted by any component that can produce magnetic field by electric current that is existing or subsequently researching and developing；Hall position is passed
Sensor 41 uses prior art；First temperature-sensitive component 42 and the second temperature-sensitive component 43 can use thermistor；Signal after
Electrical equipment 44 uses existing relay；Single-chip microcomputer 45 can be using conventional single-chip microcomputer, such as using model STC 5W404AS list
Piece machine, it sentences according to the output signal of hall position sensor 41, the first temperature-sensitive component 42 and the second temperature-sensitive component 43
The technology whether disconnected battery pack open circuit protector acts is routine techniques.
Example IV：
A kind of battery pack open circuit protector that the present embodiment is proposed, as shown in Figure 6 and Figure 7, it is the storage proposed in embodiment three
Add radiator 5 and heat-conducting plastic shell 6 on the basis of battery open circuit protector, heat-conducting plastic shell 6 by housing 61 and with
The lid 62 that housing 61 is engaged is constituted, and radiator 5 is installed in the inner chamber of housing 61, and Schottky diode 2 is installed on radiating
On device 5, afterflow detection coil 3 is installed in the inner chamber of housing 61 in the way of bar magnet 31 is placed vertically, and control board 4 is installed
In the inner chamber of housing 61 and control board 4 be located at afterflow detection coil 3 top, make hall position sensor 41 be located at magnetic
The surface of rod 31 and the top of close bar magnet 31, the first temperature-sensitive component 42 are placed on radiator 5 or Schottky diode 2
On, the second temperature-sensitive component 43 is suspended from the inner chamber of housing 61., can be effectively to Schottky diode 2 by increasing radiator 5
Radiated, therefore, it is possible to greatly increase the electrical current of Schottky diode 2, it is ensured that there is the sufficiently long time to go processing to open
The open fault of the battery on road；Radiator 5 can use aluminium radiator.It is Schottky diode using heat-conducting plastic shell 6
2nd, the radiating of control board 4 and each component being arranged in control board 4, which is provided, ensures；First temperature-sensitive component 42
Temperature for perceiving Schottky diode 2, therefore it can be placed on radiator 5 or on Schottky diode 2, ordinary circumstance
Lower selection is placed on radiator 5；Second temperature-sensitive component 43 is used for sense ambient temperature, therefore it is suspended from the inner chamber of housing 61
In.
In the present embodiment, it is formed with the outer wall of housing 61 on multiple radiating grooves 63, housing 61 and offers multiple radiatings
Through hole 64.Radiating groove 63 and thermal vias 64 are set, radiating effect can be effectively increased.
The battery pack open circuit protector of each above-mentioned embodiment, when batteries are in charged state, or is externally being supplied
When electricity condition but all normal all batteries, the Schottky in zero, i.e. battery pack open circuit protector is more than because of the voltage of battery
There is battery tension in the two ends of diode 2, this voltage is backward voltage for Schottky diode 2, therefore Schottky
Diode 2 is in cut-off state, and battery pack open circuit protector is to disconnect disengaged position for whole batteries loop, no
Any influence can be produced on batteries.
When batteries be in supplying power for outside state, but it is a certain section battery performance extreme difference, even result in " open circuit "
Phenomenon is produced, now, and the battery of this section open circuit can not be exported externally, and equivalent to internal " open circuit ", and batteries are externally supplied
Electricity, foreign current is, from positive outflow, to be flowed into from negative, and electric current is flowed to just from negative in batteries, due to the battery of open circuit
Equivalent to " open circuit ", electric current is obstructed, and the battery both end voltage now opened a way is not zero, and direction and battery are original in itself
Voltage is on the contrary, the Schottky diode 2 in the battery pack open circuit protector that i.e. other batteries are connect by the battery of open circuit is carried
Forward voltage is supplied, Schottky diode 2 is in the conduction state, the battery of short circuit open circuit produces afterflow effect, other are normal
Battery continue externally to power to the load by Xiao Te diode circuits, automatic accurate can detect the presence of phenomenon of opening a way
Battery, at the same can automatic emergency solve battery pack open circuit failure there is provided the afterflow passage of Large Copacity high current；The opposing party
Face, due to the conducting voltage very little of Schottky diode 2 itself, the turn-on action time is extremely short, therefore battery pack open circuit protector
Operating time of protection be also it is extremely short, generally 1~3 millisecond, when the voltage dip allowed less than transformer station important load continues
Between 5 milliseconds, it is pratical and feasible.Two when possessing normal voltage when i.e. the battery pack open circuit protector make use of battery normal and open a way
End occurs reversely to be cut with the characteristic of the voltage of original battery tension opposite direction, Schottky diode 2 forward conduction of itself
Only this inherent characteristic and large current characteristic can be born for a long time, accomplish whether automatic detection battery opens a way, automatic short circuit is opened
Met an urgent need in the battery on road, very short time and solve the open fault of battery, need not rely upon circuit board, electronic component and
The measurement and indirect computing to parameter such as chip judges, only using the inherent characteristic of Schottky diode 2, has been truly realized automatic
Detection, is automatically processed, instant response action, and reliable and stable, greatly reduces the possibility of misoperation.Fig. 8 gives one group
Batteries have installed the battery pack open circuit protector additional and have been not charged with the voltage-contrast curve signal of the battery pack open circuit protector
Dotted line represents to have installed the voltage change situation of the battery pack open circuit protector additional in figure, Fig. 8, and solid line represents to be not charged with the battery
The voltage change situation of open-circuit protector, as can be seen from Figure 8, in the case where having installed the battery pack open circuit protector additional,
1.8 seconds occur exchange dead electricity, battery supplying power for outside, battery pack open circuit protector snap action, short circuit open circuit battery,
Therefore the voltage of whole group batteries simply drops to 112V from 116V, has absolutely proved the battery pack open circuit protector in guarantor
Holding in terms of accumulator battery voltage, afterflow are powered has obvious effect.Fig. 9 gives the Schottky two in the battery pack open circuit protector
The ON time of pole pipe action, at 1~3 millisecond.
The battery pack open circuit protector solves automation, quick well as the auxiliary protection device of batteries
The problem of battery pack open circuit failure is handled, is last pipe protection barrier of batteries, is protected to greatest extent with minimum loss
The dc source of standby can also reliably be provided when there is open fault for visual plant by having demonstrate,proved batteries, it is ensured that handed over
The normal operation of visual plant when being lost in electricity.
The battery pack open circuit protector is a kind of battery open circuit protector, and it is applied to batteries, is also applied for other
Battery pack, as long as meeting the occasion being used in series more than 1 batteries；Fuse 1, diode in the battery pack open circuit protector
Group, the three of afterflow detection coil 3 are connected in series, and specific link position is not limited.
Claims (10)
1. a kind of battery pack open circuit protector, it is characterised in that：Often section battery in one group storage battery group is connected in parallel to one
Individual battery pack open circuit protector, the battery pack open circuit protector includes one group of diode group, and described diode group is by Xiao
Special based diode composition or be connected in parallel by multiple Schottky diodes is constituted, the negative pole and described storage of described diode group
The positive terminal connection of battery, the positive pole of described diode group is connected with the negative terminal of described battery.
2. a kind of battery pack open circuit protector according to claim 1, it is characterised in that：The battery pack open circuit protector is also
It is used to prevent the reversed fuse of described Schottky diode, described fuse and described diode group string including one
Connection connection.
3. a kind of battery pack open circuit protector according to claim 1 or 2, it is characterised in that：The battery pack open circuit is protected
Device, which also includes one, is used for the open circuit detector for detecting whether described battery opens a way, and described open circuit detector is continuous by one
Detection coil and one piece of control board composition are flowed, described afterflow detection coil is connected in series with described diode group, institute
The hall position sensor in the magnetic field for detecting described afterflow detection coil generation is provided with the control board stated, is used
The first temperature-sensitive component in the temperature of the Schottky diode described in perception, the second temperature-sensitive member device for sense ambient temperature
Whether part, break-make are opened a way signal relay, the single-chip microcomputer of determination by described battery, described hall position sensor it is defeated
Go out end, the output end of described first temperature-sensitive component, the output end of the second described temperature-sensitive component respectively with described list
Piece machine is connected, and the coil electricity loop of described signal relay is controlled by described single-chip microcomputer, described signal relay
Contact output end is connected with outside host computer.
4. a kind of battery pack open circuit protector according to claim 3, it is characterised in that：Described afterflow detection coil by
Bar magnet and the seal wire composition being set around outside described bar magnet, described one end of seal wire connect with the positive pole of described diode group
Connect, the other end of described seal wire is connected with the negative terminal of described battery, described hall position sensor position
In the surface of described bar magnet and close to described bar magnet；Or described afterflow detection coil is by bar magnet and is set around described
Seal wire composition outside bar magnet, one end of described seal wire is connected with the negative pole of described diode group, described seal wire it is another
End is connected with the positive terminal of described battery, and described hall position sensor is located at the surface of described bar magnet
And close to described bar magnet.
5. a kind of battery pack open circuit protector according to claim 4, it is characterised in that：The line footpath of described seal wire is 2
~5 millimeters.
6. a kind of battery pack open circuit protector according to claim 4, it is characterised in that：In described control board also
The power module for setting promising described control board to power.
7. a kind of battery pack open circuit protector according to claim 6, it is characterised in that：In described control board also
It is provided with for indicating the indicator lamp whether described battery opens a way, described indicator lamp is connected with described single-chip microcomputer.
8. a kind of battery pack open circuit protector according to claim 4, it is characterised in that：The battery pack open circuit protector is also
Including a radiator, described Schottky diode is installed on described radiator.
9. a kind of battery pack open circuit protector according to claim 8, it is characterised in that：The battery pack open circuit protector is also
Including a heat-conducting plastic shell, described heat-conducting plastic shell is constituted by housing and with the lid that described housing is engaged,
Described radiator is installed in the inner chamber of described housing, what described afterflow detection coil was placed vertically with described bar magnet
Mode is installed in the inner chamber of described housing, and described control board is installed in the inner chamber of described housing and described
Control board is located at the top of described afterflow detection coil, described hall position sensor is located at described bar magnet
Surface and the top of close described bar magnet, the first described temperature-sensitive component are placed on described radiator or described Xiao
On special based diode, the second described temperature-sensitive component is suspended from the inner chamber of described housing.
10. a kind of battery pack open circuit protector according to claim 9, it is characterised in that：On the outer wall of described housing
It is formed with multiple radiating grooves, described housing and offers multiple thermal vias.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341179.0A CN107069884A (en) | 2017-05-16 | 2017-05-16 | A kind of battery pack open circuit protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341179.0A CN107069884A (en) | 2017-05-16 | 2017-05-16 | A kind of battery pack open circuit protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107069884A true CN107069884A (en) | 2017-08-18 |
Family
ID=59610882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710341179.0A Withdrawn CN107069884A (en) | 2017-05-16 | 2017-05-16 | A kind of battery pack open circuit protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107069884A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110596601A (en) * | 2019-08-19 | 2019-12-20 | 华电电力科学研究院有限公司 | Single storage battery open circuit on-line monitoring and automatic bridging method |
| CN110649669A (en) * | 2019-08-27 | 2020-01-03 | 宁波技冠智能科技发展股份有限公司 | Battery open circuit real-time identification and cross-over circuit in battery pack |
| CN112054563A (en) * | 2019-06-05 | 2020-12-08 | 深圳市瑞能实业股份有限公司 | Follow current switching circuit and battery formation device |
| CN112394287A (en) * | 2021-01-20 | 2021-02-23 | 杭州华塑科技股份有限公司 | Battery open circuit detection device and detection method thereof |
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Application publication date: 20170818 |