CN207690943U - A kind of double relay lithium battery administrative protection device - Google Patents
A kind of double relay lithium battery administrative protection device Download PDFInfo
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- CN207690943U CN207690943U CN201721851194.1U CN201721851194U CN207690943U CN 207690943 U CN207690943 U CN 207690943U CN 201721851194 U CN201721851194 U CN 201721851194U CN 207690943 U CN207690943 U CN 207690943U
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- armature
- lithium battery
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 87
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910001006 Constantan Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000004922 lacquer Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 abstract description 9
- 238000004146 energy storage Methods 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 5
- 230000000717 retained effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 14
- 239000004065 semiconductor Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 5
- 230000005284 excitation Effects 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005352 galvanomagnetic phenomena Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of double relay lithium battery administrative protection device, including observation circuit, control circuit, relay is overcharged, crosses and puts relay, charging diode and discharge diode；Overcharge relay and cross and put relay and be connected in the charge-discharge circuit of lithium battery group, observation circuit is used to monitor the voltage of every battery core in lithium battery group, and one end of control circuit is connect with observation circuit, the other end respectively with overcharge relay and mistake is put relay and connect；Discharge diode with overcharge that relay is in parallel, the positive and negative anodes of discharge diode are connect with the cathode of charge-discharge circuit and anode respectively；Charging diode puts that relay is in parallel with crossing, and the positive and negative anodes of charging diode are connect with the positive and cathode of charge-discharge circuit respectively.The utility model can to lithium battery provide effectively overcharge and Cross prevention, it can be achieved that lithium battery free connection in series-parallel, discharging function is retained when overcharging protection, retains charge function in Cross prevention, especially suitable in power battery and energy storage station.
Description
Technical field
A kind of the utility model li-ion cell protection technical field, and in particular to double relay lithium battery administrative protection device.
Background technology
Power lithium-ion battery is applied to more and more widely in various equipment, including automobile, UPS, power energy storage, open country
Outer electricity consumption.It is big with capacity, small advantage, is the mainstream in current battery market.Since lithium battery is by several battery cores
It is connected in series, is limited by its physical characteristic, each battery core can not accomplish completely the same in charge and discharge, therefore easily occur one
The problem of causing sexual deviation, this just very likely makes lithium battery when in use, and internal some or certain several battery cores occurred
Fill or cross the case where putting.
And overcharge and cross and put, it is two major safety risks in lithium ion battery applications.Lithium battery, which overcharges, can cause just
Material structure variation in pole causes capacitance loss, and oxygen and electrolyte are put in its decomposition that violent chemical reaction can occur, and battery is violent
Heating, the worst result are exactly to explode naturally.Lithium battery crosses that put may be to the consequence of bringing on a disaster property of battery, especially
High current, which is crossed, puts, or crosses battery influence bigger of being rivals in a contest repeatedly.In general, overdischarge can be such that inner pressure of battery increases, positive and negative anodes are lived
Property substance invertibity destroyed, even if charging partly can only restore capacity if having apparent decaying.Therefore, lithium battery must
Palpus one protective device that can be overcharged with Cross prevention of solar obligation, this is also the major technique of dynamic lithium battery application
One of difficult point.
In application fields such as mobile phone, small-sized electric tools, the semiconductor switch such as generally use MOSFETs, IGBT are as lithium
The super-charge super-discharge protective device of battery.When the voltage of lithium battery reaches overcharged voltage or is down to overdischarge pressure, MOSFETs,
The semiconductor switch such as IGBT cut off the charging and discharging circuit of battery immediately, and battery stops charge and discharge, to be guaranteed that the safety of battery is transported
Row.Although the semiconductor switch such as MOSFETs, IGBT have many advantages, such as, using flexibly, to be swift in motion, current MOSFETs,
The semiconductor devices such as IGBT there are short life, stability is poor, anti-interference ability is weak, resistance to rush of current ability is weak, anti-high voltage surge
The problems such as ability is weak, self-heating is serious, therefore cannot achieve free connection in series-parallel, Jin Erye using the lithium battery of semiconductor switch
It can not be applied to such as electric vehicle, super energy packet, even in power energy storage station, traditional way is to manage battery concentratedly
Control causes of high cost under a large-scale relay, and heat management difficulty is high, and the standardization for seriously limiting lithium battery pushes away
Extensively.
Also occurs the lithium battery physical protection device of some included equalization functions on the market at present.Though these physical protection devices
It is so significantly better than semiconductor switch in performance, has the features such as high pressure resistant, antisurge, freely going here and there for lithium battery may be implemented
Parallel connection is very suitable for dynamic lithium battery.But since the inside of this kind of physical protection device is using only there are one trigger switch, this is just
Mean that then the charge-discharge circuit of whole group lithium battery will be all off, lithium battery group once the physical protection device is triggered
It is charged and discharged function all to lose, user can only wait for the balancing energy device in physical protection device to carry out energy to lithium battery
Equilibrium, and manual intervention can not be carried out, this allows for power battery or power energy storage station can not restore to use as early as possible.
Utility model content
For defect present in existing lithium battery management and guard method, the utility model provides a kind of double relay lithium
Battery management protective device can provide lithium battery and effectively overcharge and Cross prevention, to realize the free connection in series-parallel of lithium battery,
And it is finally applied in power battery even power energy storage station.
To reach above-mentioned technical purpose and effect, the utility model is achieved through the following technical solutions：
A kind of double relay lithium battery administrative protection device, by observation circuit, control circuit, overcharge relay, cross put after
Electric appliance, charging diode and discharge diode composition；It is described to overcharge relay and the mistake puts relay and is connected on lithium battery group
Charge-discharge circuit in, the observation circuit is connected across the positive and negative end of each battery core of the lithium battery group, the control
One end of circuit processed is connect with the observation circuit, the other end of the control circuit respectively with the relay and described of overcharging
It crosses and puts relay connection；The discharge diode is connected in parallel on the relay that overcharges in the charge-discharge circuit, the electric discharge
The anode of diode is connect with the cathode of the charge-discharge circuit, the cathode of the discharge diode and the charge-discharge circuit
Anode connection；The charging diode is put relay with the mistake and is connected in parallel in the charge-discharge circuit, the charging diode
Anode connect with the anode of the charge-discharge circuit, the cathode company of the cathode of the discharge diode and the charge-discharge circuit
It connects.
Preferably, patent " a kind of energy content of battery equilibrium relay for overcharging relay and using the present inventor's earlier application
Device（The patent No.：201521091374.5）", the energy content of battery equilibrium relay includes a shell for carrying heat sink, institute
The side that heat sink is located at the shell is stated, the bottom of the shell is provided with bottom case, and the enclosure is provided with one
A electromagnet, spring, spring base, armature, armature contact, normally-closed contact, normally opened contact, the first pin and second pin, institute
Armature contact, the normally-closed contact, the normally opened contact, first pin and the second pin is stated from the bottom case to reveal
Go out；
The electromagnet is made of insulation tube, coil and iron core, and the iron core is arranged in the inside of the insulation tube, described
The outer surface of insulation tube is wound with one or more layers coil, and the material of the coil is the constantan through high temperature lacquer coating
Silk, one end of the coil connect with first pin, and the other end of the coil is connect with the second pin, and described the
One pin and the second pin are connect with the control circuit respectively；The electromagnet is attached to the inside of the heat sink
Face, the spring base are located at the side of the electromagnet, and the lower end of the spring is fixed on the spring base, the armature position
In the top of the electromagnet and the spring base, the rear end of the armature is connected with the upper end of the spring, the armature
Front end be provided with the armature contact, the head of the armature contact be located at the normally-closed contact and the normally opened contact it
Between, the head of the armature contact is contacted by the pulling force effect of the spring with the normally-closed contact.
Further, the shell and the enclosure interior that the bottom case is surrounded are vacuum environment.
Further, it is coated with heat-conducting silicone grease between the coil and the heat sink.
Preferably, described to overcharge a kind of patent " taking off using microswitch of the relay using the present inventor's earlier application
Bridge-type magnetic latching relay（The patent No.：201621398568.4）", the de- bridge-type magnetic latching relay includes a case,
Be provided in the case the first armature, the second armature, double-coil electromagnet, I-shaped magnet steel, the first magnet, the second magnet and
Bidirectional final switchs；
The lower end of first armature is exposed to outside the case, and the upper end of first armature is provided with stationary contact；Institute
The lower end for stating the second armature is exposed to outside the case, and the upper end of second armature is provided with one piece of armature shrapnel；The rank
Movable contact is provided in the middle part of iron shrapnel, the movable contact is corresponding with the stationary contact, the lower end setting of the armature shrapnel
There is a connecting rod normal thereto；The middle part of the connecting rod is hinged there are one magnet steel fixed seat, and the I-shaped magnet steel setting exists
In the magnet steel fixed seat, first magnet and second magnet are located at the left and right two below the I-shaped magnet steel
Side；The double-coil electromagnet is located at the top of the I-shaped magnet steel, and the double-coil electromagnet includes a bar shaped
The left and right ends of conductor, the strip conductor are wound with the first magnet exciting coil and the second magnet exciting coil respectively；First excitation
One end of coil and second magnet exciting coil is drawn from the case respectively, and is connect with the control circuit, described
The other end of first magnet exciting coil and second magnet exciting coil respectively with the bidirectional final switch in the first tie point and
Second tie point connects；
Further include having third tie point, metal clips and driving lever in the bidirectional final switch, the metal clips is consolidated
Fixed end is connected on the third tie point, and the movable end of the metal clips can connect in first tie point and described second
It swings back and forth between contact；It is connected with conducting wire on the third tie point, and is drawn and the control circuit from the case
Connection；The fixing end of the driving lever is connected to the middle part of the metal clips, and the movable end of the driving lever is directed at the connecting rod
End.
Further, the material of the connecting rod and the driving lever is insulating materials.
Further, one piece of trigger shrapnel is provided between the end of the connecting rod and the movable end of the driving lever.
The operation principle of the utility model is as follows：
1, every overcharging for battery core in lithium battery group is set by control circuit and protects voltage and Cross prevention voltage, then
The voltage of every battery core in lithium battery group is measured in real time using observation circuit.
2, when lithium battery group is in charged state, all battery cores charge simultaneously, if observation circuit detects any one
The voltage of battery core reach overcharge protection voltage when, provide a feedback signal to control circuit at once, control circuit controls immediately
Relay disconnection is overcharged, the charging circuit of lithium battery group disconnects at this time, and lithium battery group does not recharge；And discharge circuit is then using putting
The one-way conduction of electric diode so that lithium battery group retains discharging function, and lithium battery group can carry out energy by overcharging relay
Amount is balanced, or exports electricity by discharge circuit and carry out balancing energy；When observation circuit detects the voltage drop of the branch battery core
To after given voltage, a feedback signal is provided to control circuit, control circuit controls that overcharge electrical relay multiple immediately at once
Position, the charging circuit conducting of lithium battery group, lithium battery group restore charge function at this time.
It overcharges relay and both uses energy content of battery equilibrium relay, armature contact is contacted with normally-closed contact to be belonged to relay and lead
Logical state, armature contact is contacted with normally opened contact belongs to relay off-state.
When observation circuit detects that the voltage of any one battery core of the volume in lithium battery group overcharges protection voltage, control
Coil in the electricity Persistent Excitation energy content of battery equilibrium relay that circuit processed passes through lithium battery group discharges；Coil midstream mistake
Electric current make electromagnet generate galvanomagnetic-effect, armature under the action of electromagnetic attracting force, overcome spring elastic force so that be drawn to
Iron core；Then armature drives armature contact to be closed with normally opened contact, and lithium battery group is made to be disconnected with charging circuit, and lithium battery group stops
Charging；Due to the lasting energization of coil, lithium battery group, which exceeds to overcharge, protects the electric energy of voltage that will be largely converted into electromagnetism
Magnetic energy caused by iron, fraction are converted into thermal energy caused by coil, and magnetic energy can continue armature being drawn to iron core, keep charging
Circuit off-state, and thermal energy can then be shed by heat sink, the energy in such lithium battery group is just able to equilibrium；
After observation circuit detects that the voltage of battery core drops to given voltage, control circuit disconnects the power supply of coil, electricity
The galvanomagnetic-effect of magnet disappears, and also disappears therewith to the suction of armature, and armature returns initial under the reaction force of spring
Position makes armature contact be closed with normally-closed contact, and the battery is made to be connected with battery charger, and lithium battery group can continue to fill
Electricity.
When lithium battery group is in discharge condition, as electricity constantly discharges, the voltage of every battery core is gradually reduced, if prison
When slowdown monitoring circuit detects that the voltage of any one battery core drops to Cross prevention voltage, a feedback is provided to control circuit at once
Signal, control circuit controlled immediately puts relay disconnection, and the discharge circuit of lithium battery group disconnects at this time, and lithium battery group is no longer put
Electricity；And charging circuit then utilizes the one-way conduction of charging diode so that lithium battery group retains charge function, and lithium battery group can
It carries out mending electricity by charging circuit；After observation circuit detects that the voltage of the branch battery core is restored to given voltage, at once to
Control circuit provides a feedback signal, and control circuit controls the reset of overdischarge relay, the at this time electric discharge of lithium battery group immediately
Circuit turn-on, lithium battery group restore discharging function.
It crosses and puts relay and cannot select energy content of battery equilibrium relay, de- bridge-type bistable magnetic can only be used to keep relay
Device, because de- bridge-type bistable magnetic latching relay only need to consume minimum electricity in switching, the stable state of guard relay is then
It is realized by de- bridge, to ensure that there is no energy expenditures when lithium battery group carries out Cross prevention.Shape is connected in relay
State is that the entirety of I-shaped magnet steel is tilted to the right, and lower right side is because magnetic force is contacted with the second magnet, left lower and first
Magnet detaches, and left upper portion is close to the left end of double-coil electromagnet, right end of the right upper portion far from double-coil electromagnet；Even
Bar is in the left end of its direction of motion, and armature shrapnel is pushed out, and movable contact is bonded with stationary contact, the first armature and the second armature
Conducting；Meanwhile connecting rod end is detached with driving lever, metal clips is in reset state, i.e. metal clips because of its own resilient characteristic
Movable end connect with the second tie point, the first magnet exciting coil disconnects at this time, and the second magnet exciting coil is connected, in waiting for work shape
State；Relay off-state is that the entirety of I-shaped magnet steel is tilted to the left, and lower right side is detached with the second magnet, left side
Lower part is because magnetic force is contacted with the first magnet, and left end of the left upper portion far from double-coil electromagnet, right upper portion is close to two-wire
Enclose the right end of electromagnet；Connecting rod is in the right end of its direction of motion, and armature shrapnel is moved and touched because its own resilient characteristic is reset
Point is detached with stationary contact, and the first armature and the second armature disconnect；Meanwhile connecting rod end is contacted and is pressed with driving lever, metal clips
In the state that is pushed out, i.e. the movable end of metal clips connect point contact with second, and the first magnet exciting coil is connected at this time, in waiting for
Working condition, and the second magnet exciting coil disconnects.
When observation circuit detects that the voltage of any one battery core of the volume in lithium battery group overcharges protection voltage, control
Circuit processed gives the second magnet exciting coil one exciting current by lithium battery group, and the right end of double-coil electromagnet generates magnetic force, inhales
The right upper portion for drawing I-shaped magnet steel is upturned, the right end of close double-coil electromagnet, and the lower right side of I-shaped magnet steel
It is then detached with the second magnet, while the left upper portion of I-shaped magnet steel is to whereabouts, the left end far from double-coil electromagnet, and I-shaped
The left lower of type magnet steel is contacted with the first magnet；Then I-shaped magnet steel drives connecting rod to move right by magnet steel mounting base,
Connecting rod then pulls armature shrapnel so that movable contact is detached with stationary contact, and the first armature and the second armature disconnect so that relay
It disconnects, charging circuit disconnects；
Simultaneously, the end of moving to right with connecting rod, connecting rod withstands the driving lever of bidirectional final switch and applies pressure, dials
Bar then inwardly moves and the movable end of metal clips is pushed to swing to the first tie point from the second tie point so that the second excitation
Coil disconnects, and the first magnet exciting coil is connected, and waits for regime shift next time.When observation circuit detects that the voltage of battery core drops to finger
After constant voltage, operation principle is then in contrast.
Compared with prior art, the utility model has the beneficial effects that：
1, the utility model uses mechanical switch and carries out security protection to dynamic lithium battery first, solves tradition and partly leads
The problems such as body, which switchs, can not bear high pressure, surge.That is, under the standardization voltage platform of traditional standard lithium battery, this
Utility model constitutes independent safety prevention measure so that free connection in series-parallel may be implemented in lithium battery.
2, secondly the utility model uses double relay pattern, by the charging circuit of lithium battery group and discharge circuit point
It opens.When overcharge relay because lithium battery overcharges disconnect when, due to the one-way conduction of discharge diode connected in parallel so that
Lithium battery group still has discharging function, and lithium battery group carries out except through protective device outside balancing energy, can also be by putting
Circuit powering load does not influence the use of lithium battery.Served as putting relay when disconnecting due to lithium battery is crossed and put, due to its
The one-way conduction of charging diode in parallel so that lithium electricity group still has charge function, and user can be by lithium battery
It is charged quickly to solve the problems, such as to put.This allows for being more applicable for electric vehicle using the lithium battery of this protective device
Power battery, super energy packet or even power energy storage station.
3, the relay that overcharges of the utility model uses energy content of battery equilibrium relay, due to persistently leading to for its Inside coil
Electricity, therefore lithium battery group will be largely converted into magnetic energy caused by electromagnet, fraction beyond the electric energy for overcharging protection voltage
It is converted into thermal energy caused by coil, magnetic energy can continue armature being drawn to iron core, keep charging circuit off-state, and thermal energy is then
It can be shed by heat sink, the energy in such lithium battery group is just able to equilibrium, further speeds up the recovery of lithium battery.
4, the mistake of the utility model puts relay using de- bridge-type bistable magnetic latching relay, when two stable states switch
The exciting current of very little is only needed, the electricity in consumption lithium battery group need not be continued, the stable state of guard relay is then by de-
Bridge is realized, to ensureing that there is no energy expenditure when lithium battery group carries out Cross prevention.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.Specific embodiment of the present utility model is shown in detail by following embodiment and its attached drawing.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings：
Fig. 1 is the internal structure schematic diagram of the double relay lithium battery administrative protection device of the utility model；
Fig. 2 is the internal structure schematic diagram of energy content of battery equilibrium relay used by the utility model；
Fig. 3 is the front view of energy content of battery equilibrium relay used by the utility model；
Fig. 4 is the upward view of energy content of battery equilibrium relay used by the utility model；
Fig. 5 is that the internal structure signal of bridge-type magnetic latching relay in the closure state is taken off used by the utility model
Figure；
Fig. 6 is the internal structure signal taken off used by the utility model when bridge-type magnetic latching relay is off
Figure.
Fig. 7 is the double-coil electromagnet and bidirectional final switch that bridge-type magnetic latching relay is taken off used by the utility model
Annexation figure.
Specific implementation mode
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in detail.
Shown in Figure 1, a kind of double relay lithium battery administrative protection device by observation circuit 1, control circuit 2, overcharges
Relay 3 is crossed and puts relay 4, charging diode 5 and the composition of discharge diode 6；It is described overcharge relay 3 and the mistake put after
Electric appliance 4 is connected in the charge-discharge circuit of lithium battery group 7, and the observation circuit 1 is connected across each electricity of the lithium battery group 7
The positive and negative end of core, one end of the control circuit 2 are connect with the observation circuit 1, the other end point of the control circuit 2
Relay 3 is not overcharged with described and the mistake is put relay 4 and connect；The discharge diode 6 with described to overcharge relay 3 in parallel
In the charge-discharge circuit, the anode of the discharge diode 6 is connect with the cathode of the charge-discharge circuit, the electric discharge two
The cathode of pole pipe 6 is connect with the anode of the charge-discharge circuit；The charging diode 5 is put relay 4 with the mistake and is connected in parallel on
In the charge-discharge circuit, the anode of the charging diode 5 is connect with the anode of the charge-discharge circuit, two poles of the electric discharge
The cathode of pipe 6 is connect with the cathode of the charge-discharge circuit.
Preferably, referring to shown in Fig. 2-4, the mistake puts relay 4 and uses a kind of energy content of battery equilibrium relay, the electricity
Pond balancing energy relay includes a shell 111 for carrying heat sink 16, and the heat sink 16 is located at the one of the shell 111
The bottom of a side, the shell 111 is provided with bottom case 112, and the shell 111 is internally provided with electromagnet 17, a spring
19, spring base 18, armature 110, armature contact 13, normally-closed contact 14, normally opened contact 15, the first pin 11 and second pin
12, the armature contact 13, the normally-closed contact 14, the normally opened contact 15, first pin 11 and the second pin
12 expose from the bottom case 112；Wherein described first pin 11 and the second pin 12 with respectively with the control circuit 2
Connection, the armature contact 13 and the normally-closed contact 14 are respectively connected to the anode and cathode of the charge-discharge circuit；
The electromagnet 17 is made of insulation tube 171, coil 172 and iron core 173, and the setting of the iron core 173 is described exhausted
The outer surface of the inside of edge pipe 171, the insulation tube 171 is wound with one or more layers coil 172, the coil 172
Material is the constantan wire through high temperature lacquer coating, and one end of the coil 172 is connect with first pin 11, the coil
172 other end is connect with the second pin 12；The electromagnet 17 is attached to the medial surface of the heat sink 16, the bullet
Spring abutment 18 is located at the side of the electromagnet 17, and the lower end of the spring 19 is fixed on the spring base 18, the armature 110
Positioned at the top of the electromagnet 17 and the spring base 18, the rear end of the armature 110 is connected with the upper end of the spring 19
It connects, the front end of the armature 110 is provided with the armature contact 13, and the head of the armature contact 13 is located at the normally-closed contact
Between 14 and the normally opened contact 15, the head of the armature contact 13 normally closed is touched by the pulling force effect of the spring 19 with described
14 contact of point.
Further, the shell 111 and the enclosure interior that the bottom case 112 is surrounded are vacuum environment.
Further, it is coated with heat-conducting silicone grease between the coil 172 and the heat sink 16.
Preferably, referring to shown in Fig. 5-7, the relay 3 that overcharges is protected using a kind of de- bridge-type magnetic using microswitch
Hold relay, the de- bridge-type magnetic latching relay includes a case 213, be provided in the case 213 first armature 21,
Second armature 22, double-coil electromagnet 23, I-shaped magnet steel 24, the first magnet 25, the second magnet 26 and bidirectional final switch 27；
The upper end of first armature 21 is provided with stationary contact 28, and the upper end of second armature 22 is provided with one block of armature
The lower end of shrapnel 29, the lower end of first armature 21 and second armature 22 is exposed to respectively outside the case 213, and point
The anode and cathode of the charge-discharge circuit are not accessed；The middle part of the armature shrapnel 29 is provided with movable contact 210, described dynamic tactile
Point 210 is corresponding with the stationary contact 28, and the lower end of the armature shrapnel 29 is provided with a connecting rod 211 normal thereto；
The middle part of the connecting rod 211 is hinged there are one magnet steel fixed seat 212, and the I-shaped magnet steel 24 is arranged in the magnetic
In steel fixed seat 212, first magnet 25 and second magnet 26 are located at the left side below the I-shaped magnet steel 24
Right both sides；The double-coil electromagnet 23 is located at the top of the I-shaped magnet steel 24, and the double-coil electromagnet 23 wraps
A strip conductor is included, the left and right ends of the strip conductor are wound with the first magnet exciting coil and the second magnet exciting coil respectively；Institute
The one end for stating the first magnet exciting coil and second magnet exciting coil is drawn from the case 213 respectively, and with the control
Circuit 2 connects, the other end of first magnet exciting coil and second magnet exciting coil respectively with the bidirectional final switch 27
In the first tie point 271 and the second tie point 272 connection；Further include having third tie point in the bidirectional final switch 27
273, the fixing end of metal clips 274 and driving lever 275, the metal clips 274 is connected on the third tie point 273, institute
The movable end for stating metal clips 274 can swing back and forth between first tie point 271 and second tie point 272；Institute
It states and is connected with conducting wire on third tie point 273, and draw from the case 213 and connect with the control circuit 2；The driving lever
275 fixing end is connected to the middle part of the metal clips 274, and the movable end of the driving lever 275 is directed at the end of the connecting rod 211
End.
Further, the material of the connecting rod 211 and the driving lever 275 is insulating materials.
Further, one piece of trigger shrapnel is provided between the end of the connecting rod 211 and the movable end of the driving lever 275
214。
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of double relay lithium battery administrative protection device, it is characterised in that：By observation circuit（1）, control circuit（2）, mistake
Fill relay（3）, cross put relay（4）, charging diode（5）And discharge diode（6）Composition；It is described to overcharge relay（3）
Relay is put with the mistake（4）It is connected on lithium battery group（7）Charge-discharge circuit in, the observation circuit（1）It is connected across described
Lithium battery group（7）Each battery core positive and negative end, the control circuit（2）One end and the observation circuit（1）Even
It connects, the control circuit（2）The other end overcharge relay with described respectively（3）Relay is put with the mistake（4）Connection；It is described
Discharge diode（6）Relay is overcharged with described（3）It is connected in parallel in the charge-discharge circuit, the discharge diode（6）Just
Pole is connect with the cathode of the charge-discharge circuit, the discharge diode（6）Cathode and the charge-discharge circuit anode even
It connects；The charging diode（5）Relay is put with the mistake（4）It is connected in parallel in the charge-discharge circuit, the charging diode
（5）Anode connect with the positive of the charge-discharge circuit, the discharge diode（6）Cathode and the charge-discharge circuit
Cathode connects.
2. double relay lithium battery administrative protection device according to claim 1, it is characterised in that：It is described to overcharge relay
（3）For a kind of energy content of battery equilibrium relay, the energy content of battery equilibrium relay includes one and carries heat sink（16）It is outer
Shell（111）, the heat sink（16）Positioned at the shell（111）A side, the shell（111）Bottom be provided with bottom
Shell（112）, the shell（111）It is internally provided with an electromagnet（17）, spring（19）, spring base（18）, armature（110）、
Armature contact（13）, normally-closed contact（14）, normally opened contact（15）, the first pin（11）And second pin（12）, the activity
Contact（13）, the normally-closed contact（14）, the normally opened contact（15）, first pin（11）With the second pin（12）
From the bottom case（112）Upper exposing；
The electromagnet（17）By insulation tube（171）, coil（172）And iron core（173）Composition, the iron core（173）Setting exists
The insulation tube（171）Inside, the insulation tube（171）Outer surface be wound with one or more layers coil（172）, institute
State coil（172）Material be the constantan wire through high temperature lacquer coating, the coil（172）One end and first pin
（11）Connection, the coil（172）The other end and the second pin（12）Connection, first pin（11）With described
Two pins（12）Respectively with the control circuit（2）Connection；The electromagnet（17）It is attached to the heat sink（16）Inside
Face, the spring base（18）Positioned at the electromagnet（17）Side, the spring（19）Lower end be fixed on the spring base
（18）On, the armature（110）Positioned at the electromagnet（17）With the spring base（18）Top, the armature（110）'s
Rear end and the spring（19）Upper end be connected, the armature（110）Front end be provided with the armature contact（13）, described
Armature contact（13）Head be located at the normally-closed contact（14）With the normally opened contact（15）Between, the armature contact（13）
Head by the spring（19）Pulling force effect and the normally-closed contact（14）Contact.
3. double relay lithium battery administrative protection device according to claim 2, it is characterised in that：The shell（111）
With the bottom case（112）The enclosure interior surrounded is vacuum environment.
4. double relay lithium battery administrative protection device according to claim 2, it is characterised in that：The coil（172）
With the heat sink（16）Between be coated with heat-conducting silicone grease.
5. double relay lithium battery administrative protection device according to claim 1, it is characterised in that：It is described to overcharge relay
（3）For a kind of de- bridge-type magnetic latching relay using microswitch, the de- bridge-type magnetic latching relay includes a case
（213）, the case（213）Inside it is provided with the first armature（21）, the second armature（22）, double-coil electromagnet（23）, it is I-shaped
Magnet steel（24）, the first magnet（25）, the second magnet（26）It is switched with bidirectional final（27）；
First armature（21）Lower end be exposed to the case（213）Outside, first armature（21）Upper end be provided with
Stationary contact（28）；Second armature（22）Lower end be exposed to the case（213）Outside, second armature（22）Upper end
It is provided with one piece of armature shrapnel（29）；The armature shrapnel（29）Middle part be provided with movable contact（210）, the movable contact
（210）With the stationary contact（28）It is corresponding, the armature shrapnel（29）Lower end be provided with a connecting rod normal thereto
（211）；The connecting rod（211）Hinged there are one magnet steel fixed seats at middle part（212）, the I-shaped magnet steel（24）Setting is in institute
State magnet steel fixed seat（212）In, first magnet（25）With second magnet（26）It is located at the I-shaped magnet steel
（24）The left and right sides of lower section；The double-coil electromagnet（23）Positioned at the I-shaped magnet steel（24）Top, it is described
Double-coil electromagnet（23）Including a strip conductor, the left and right ends of the strip conductor are wound with the first magnet exciting coil respectively
With the second magnet exciting coil；One end of first magnet exciting coil and second magnet exciting coil is respectively from the case（213）In
Draw, and with the control circuit（2）The other end difference of connection, first magnet exciting coil and second magnet exciting coil
It is switched with the bidirectional final（27）In the first tie point（271）With the second tie point（272）Connection；
The bidirectional final switch（27）In further include having third tie point（273）, metal clips（274）And driving lever（275）, institute
State metal clips（274）Fixing end be connected to the third tie point（273）On, the metal clips（274）Movable end
It can be in first tie point（271）With second tie point（272）Between swing back and forth；The third tie point（273）
On be connected with conducting wire, and from the case（213）Middle extraction and the control circuit（2）Connection；The driving lever（275）Fixation
End is connected to the metal clips（274）Middle part, the driving lever（275）Movable end be directed at the connecting rod（211）End.
6. double relay lithium battery administrative protection device according to claim 5, it is characterised in that：The connecting rod（211）
With the driving lever（275）Material be insulating materials.
7. double relay lithium battery administrative protection device according to claim 5, it is characterised in that：The connecting rod（211）
End and the driving lever（275）Movable end between be provided with one piece of trigger shrapnel（214）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721851194.1U CN207690943U (en) | 2017-12-26 | 2017-12-26 | A kind of double relay lithium battery administrative protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721851194.1U CN207690943U (en) | 2017-12-26 | 2017-12-26 | A kind of double relay lithium battery administrative protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207690943U true CN207690943U (en) | 2018-08-03 |
Family
ID=62996019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721851194.1U Expired - Fee Related CN207690943U (en) | 2017-12-26 | 2017-12-26 | A kind of double relay lithium battery administrative protection device |
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| Country | Link |
|---|---|
| CN (1) | CN207690943U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946678A (en) * | 2017-12-26 | 2018-04-20 | 彭旭华 | A kind of double relay lithium battery administrative protection device |
| CN111458664A (en) * | 2020-04-28 | 2020-07-28 | 山西汾西重工有限责任公司 | Monitoring device |
| CN113937735A (en) * | 2021-10-26 | 2022-01-14 | 傲普(上海)新能源有限公司 | Pre-charging, over-voltage and over-current protection circuit and method for battery module |
-
2017
- 2017-12-26 CN CN201721851194.1U patent/CN207690943U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946678A (en) * | 2017-12-26 | 2018-04-20 | 彭旭华 | A kind of double relay lithium battery administrative protection device |
| CN107946678B (en) * | 2017-12-26 | 2019-11-12 | 彭旭华 | A kind of double relay lithium battery administrative protection method |
| CN111458664A (en) * | 2020-04-28 | 2020-07-28 | 山西汾西重工有限责任公司 | Monitoring device |
| CN113937735A (en) * | 2021-10-26 | 2022-01-14 | 傲普(上海)新能源有限公司 | Pre-charging, over-voltage and over-current protection circuit and method for battery module |
| CN113937735B (en) * | 2021-10-26 | 2023-07-18 | 傲普(上海)新能源有限公司 | Battery module pre-charging and overvoltage and overcurrent protection circuit and method |
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Effective date of registration: 20210804 Address after: 400000 No. 3-3, unit 2, building 12, tuanyuanbao, economic development zone, Nan'an District, Chongqing Patentee after: CHONGQING JINGZANG ELECTRICITY STORAGE AND DISTRIBUTION TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 400000 No. 3-3, unit 2, No. 12, tuanyuanbao, Nan'an District, Chongqing Patentee before: Peng Xuhua |
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