CN207586400U - Battery pack current detecting tool - Google Patents
Battery pack current detecting tool Download PDFInfo
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- CN207586400U CN207586400U CN201721750532.2U CN201721750532U CN207586400U CN 207586400 U CN207586400 U CN 207586400U CN 201721750532 U CN201721750532 U CN 201721750532U CN 207586400 U CN207586400 U CN 207586400U
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- battery pack
- relay
- switch
- out wire
- power resistor
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- 238000011161 development Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
This application discloses a kind of battery pack current detecting tool, including：Battery pack；The total positive lead-out wire and total negative lead-out wire being connected with the battery pack；It is connected between total positive lead-out wire and always negative lead-out wire by Speed wiring device and the first power resistor and the second power resistor parallel with one another；The first relay switch connected with first power resistor；The second relay switch connected with second power resistor；The BMS battery management systems being connected by voltage sample line with the battery in the battery pack；It is serially connected in the current divider being connected on total positive lead-out wire and with the BMS battery management systems by current sample line.This tooling of the application can detect battery pack current acquisition circuit it is whether reversed, ensure that the outgoing of battery pack, and the tooling can detect the battery pack of different model, good compatibility.
Description
Technical field
This application involves battery arts, and in particular to a kind of battery pack current detecting tool.
Background technology
Energy conservation and environmental protection is the mainstream and inevitable requirement of current development of world economy, and automobile is right as important energy-consuming product
Energy-saving and environment-friendly requirement is more urgent, and cry is higher.Therefore Development of EV realizes the electrical of energy source of car dynamical system
Change, push the strategic transformation of orthodox car industry, formd extensive common recognition in the world.At present, China has put into effect many
Policy, is helped and the fast development of guiding electric vehicle industry, government are intended to the competitiveness for accelerating to improve domestic electric vehicle industry,
Shorten the maturity period, realize " bend is overtaken other vehicles " to Automobile Industry Abroad.The development of electric vehicle is stepped into the critical period, and opportunity is with choosing
It fights and deposits.
Why electric vehicle becomes the favorite of this century technological development, firstly because electric vehicle directly uses motor
Driving, the pernicious gas of itself not exhaust emission air, even if being scaled the discharge in power plant, sulphur removal and particle by institute's power consumption
Outside, other pollutants also substantially reduce.Power plant is built in mostly far from densely populated city, less to mankind's injury, and
The place in power plant is fixed, and noxious emission concentrates discharge, removing to be easier to.Since electric power can be obtained from a variety of primary energy
, such as coal, nuclear energy, waterpower, wind-force, light, heat, people can be released well to the day by day exhausted worry of petroleum resources.Its
Secondary, electric vehicle can make full use of the power charge having more than needed during night low power consumption, and generating equipment is made to be fully used, greatly
The earth improves economic benefit.It is related research shows that, same crude oil send to power plants generating electricity by thick refining, is filled with battery, by electricity
Pond drives automobile, and energy utilization efficiency ratio becomes gasoline, then high through gasoline engine driving automobile by refining, therefore is conducive to save
The about discharge capacity of the energy and reduction carbon dioxide.
But electric vehicle is from technological layer, its car body, motor, transmission system, control system waits all
It preferably solves, it is always the bottleneck that it is controlled to develop to have power battery only.Traditional accumulator, such as lead-acid battery, ni-Cd
Battery, Ni-MH battery etc., too lower than energy, the mileage travelled of vehicle is too short under rational dead weight, can not meet user's
Minimum requirements.And their cycle life is too short, and basic expectation of the people to vehicle service life is much not achieved, it is difficult to
Open up big market.The energy density of fuel cell is very big, does not pollute completely, but technology not yet reaches a standard, and specific power is low, wet
The state service life is too short, and this battery will make catalyst using noble metal platinum, and not only expensive and resource is extremely limited, it is difficult to
It promotes.
Most recent two decades are just born the ratio energy of the lithium ion battery to grow up, and specific power and cycle life are all much
It has been more than conventional batteries, more valuable is that they are free of poisonous and harmful substance, and friendly to environment, raw material resources also enrich.
This battery is filled with new vitality to the development of electric vehicle.It is current ideal electric automobile power battery.Such electricity
The production technology of pond at home was already ripe, and output also reaches first place in the world.But such battery energy density is high, and makes
With organic electrolyte, there are explosion and danger on fire.And some accidents caught fire also occurred really.In order to eliminate such danger
Danger, improve the safety of module, and make battery performance perform to it is ultimate attainment, not only need improve single battery safety, disappear
Except internal flaw, it is also desirable to there is good battery to arrange in pairs or groups, the outstanding group technology such as connection and conservative management.
The electrical property of assembled battery group in order to monitor in real time, generally use BMS battery management systems monitoring battery pack
Voltage and discharge current judge battery when battery pack comes into operation by monitoring the voltage and current state of battery pack in real time
Group performance.However, battery pack before manufacture, will not connect load, so also just can not be in manufacture stage detection battery pack
Course of discharge and discharge current, it is difficult to judge whether current acquisition circuit is reversed between BMS and battery pack, there is manufacture battery pack matter
Measure underproof problem.
Utility model content
The purpose of the application is：In order to overcome the above problem, provide whether one kind can detect battery pack current acquisition circuit
Reversed current detecting tooling, to ensure the outgoing of each battery pack, and the tooling can detect the electricity of different model
Pond group, good compatibility.
The technical solution of the application is：
A kind of battery pack current detecting tool, including：
Battery pack；
The total positive lead-out wire and total negative lead-out wire being connected with the battery pack；
It is connected between total positive lead-out wire and always negative lead-out wire by Speed wiring device and the first work(parallel with one another
Rate resistance and the second power resistor；
The first relay switch connected with first power resistor；
The second relay switch connected with second power resistor；
The BMS battery management systems being connected by voltage sample line with the battery in the battery pack；And
It is serially connected in point being connected on total positive lead-out wire and with the BMS battery management systems by current sample line
Flow device.
The application based on the above technical solution, further includes following preferred embodiment：
It further includes：
The first fuse connected with first power resistor and
The second fuse connected with second power resistor.
The first fuse and the second fuse are fuse.
Charge and discharge electrical relay is in series on total positive lead-out wire, the BMS battery management systems pass through relay driving
Circuit is connected with the charge and discharge electrical relay.
The third fusing being in series on total positive lead-out wire between the current divider and the charge and discharge electrical relay
Device.
First relay switch is connected with second relay switch by control relay circuit, it is described after
Electrical apparatus control circuit prevents first relay switch and second relay switch from being also turned on.
The control relay circuit includes control power supply, the first manual switch and the second manual switch, described first after
Electric switch and the second relay switch are connected in parallel between the positive and negative anodes of the control power supply, first manual switch and described
Second manual switch respectively have normally opened auxiliary contact and normally closed auxiliary contact, wherein, first manual switch it is normally opened
The normally closed auxiliary contact of auxiliary contact and second manual switch is connected with first relay switch, and described second is manual
The normally opened auxiliary contact of switch and the normally closed auxiliary contact of first manual switch are connected with second relay switch.
First manual switch and second manual switch are self-resetting switch.
First power resistor and second power resistor have different resistance values.
The advantages of the application is：This current detecting tooling of the application can detect battery pack current acquisition circuit whether
It is reversed, it ensure that the outgoing of each battery pack, and it can detect the battery pack of different model, good compatibility.
Description of the drawings
In order to illustrate more clearly of the technical solution of the embodiment of the present application, required use in being described below to embodiment
Attached drawing be briefly described, the accompanying drawings in the following description is only some embodiments of the present application, for the common skill in this field
For art personnel, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the circuit structure diagram of battery pack current detecting tool in the embodiment of the present application；
Fig. 2 is that the circuit structure of the embodiment of the present application repeat circuit control circuit is intended to；
Wherein：1- battery packs, the total positive lead-out wires of 2-, 3- always bear lead-out wire, 4-BMS battery management systems, 5- current dividers,
6- first fuses, 7- second fuses, 8- third fuses, 9- Speed wiring devices, 10- voltage sample lines, 11- current samples
Line, 12- relay driving circuits, 13- control power supplys, the first power resistors of R1-, the second power resistors of R2-, the first relays of K1-
Device switchs, the second relay switches of K2-, K3- charge and discharge electrical relays, the first manual switches of SB1-, the second manual switches of SB2-.
Specific embodiment
Said program is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating
The application and be not limited to limitation scope of the present application.The implementation condition used in embodiment can be done according to the condition of specific producer
Further adjustment, the implementation condition being not specified is usually the condition in routine experiment.
Fig. 1 shows a specific embodiment of this battery pack current detecting tool of the application, including：
Battery pack 1；
The total positive lead-out wire 2 and total negative lead-out wire 3 being connected with above-mentioned battery pack；
It is connected between above-mentioned total positive lead-out wire 2 and total negative lead-out wire 3 by Speed wiring device 9 and parallel with one another the
One power resistor R1 and the second power resistor R2；
The the first relay switch K1 to connect with above-mentioned first power resistor R1；
The the second relay switch K2 to connect with above-mentioned second power resistor R2；
The BMS battery management systems 4 being connected by voltage sample line 10 with the battery in battery pack 1；And
It is serially connected on above-mentioned total positive lead-out wire 2 and is connected by current sample line 11 with above-mentioned BMS battery management systems 4
Current divider 5.
The resistance value of above-mentioned first power resistor R1 and the second power resistor R2 are different, the first power resistor R1 in the present embodiment
Resistance value be more than the second power resistor R2.
During practical application, if the voltage of battery pack 1 is higher, the first relay switch K1 connections, the second relay are stated in control
Device switch K2 is disconnected, and makes the first power resistor R1 access circuits that resistance value is larger, battery power discharge and to be unlikely to electric current excessive
And burn battery.BMS battery management systems 4 acquire the electric current at current divider 5 by current sample line 11, and operator observes BMS
Whether the current direction shown by battery management system 4 is just, if just, then illustrating that current sample line 11 is not reversed, to remove fast
The battery pack can dispatch from the factory after quick access line device 9；If current direction is anti-, illustrates that current sample line 11 is reversed, need rewiring.
During practical application, if the voltage of battery pack 1 is smaller, the first relay switch K1 disconnections, the second relay are stated in control
Device switch K2 is connected, and makes resistance value smaller first power resistor R2 access circuits, battery power discharge and to be unlikely to electric current too small
And it is difficult to observe electric current.
For the safety during current detecting, the present embodiment is also provided with connect with the first power resistor R1 first
Fuse 6 and the second fuse 7 connected with the second power resistor R2.Aforementioned first fuse 6 and second fuse 7 are equal
For common fuse.
Moreover, being in series with charge and discharge electrical relay K3, BMS battery management system 4 on above-mentioned total positive lead-out wire 2 passes through relay
Device driver circuit 12 is connected with charge and discharge electrical relay K3, to control the break-make of charge and discharge electrical relay K3.Only when the charge and discharge
Relay K3 in an ON state when, which can carry out charge or discharge operation.
In order to ensure that the battery pack has good safety after coming into operation, the present embodiment is in above-mentioned total positive lead-out wire
The third fuse 8 being in series on 2 between current divider 5 and charge and discharge electrical relay K3.
In view of during current detecting, if the first power resistor R1 and the second power resistor R2 in parallel connects simultaneously
It is logical, it will to generate very big electric current, battery pack may be burnt.In this regard, the present embodiment is by above-mentioned first relay switch K1 and
Two relay switch K2 are connected with control relay circuit, which makes the first relay switch K1 and second
Relay switch K2 is interlocked, and one of the first relay switch K1 and the second relay switch K2 is at most only allowed to be in and is connected
State --- two relay switches cannot be also turned on, and can only be selected a connection or be simultaneously switched off.
With reference to shown in Fig. 2, above-mentioned control relay circuit includes control power supply 13, the first manual switch SB1 and second-hand
Control switch SB2, wherein the first manual switch SB1 and the second manual switch SB2 are self-resetting switch.Above-mentioned first relay is opened
It closes K1 and the second relay switch K2 to be connected in parallel between the positive and negative anodes of control power supply 13, the first manual switch SB1 has normally opened auxiliary
Contact and normally closed auxiliary contact are helped, the second manual switch SB2 also has normally opened auxiliary contact and normally closed auxiliary contact.Wherein,
The normally closed auxiliary contact and the first relay switch K1 of the normally opened auxiliary contact of one manual switch SB1 and the second manual switch SB2
The normally closed auxiliary contact and the second relay of series connection, the normally opened auxiliary contact of the second manual switch SB2 and the first manual switch SB2
Switch K2 series connection.
In this way, no matter how operator manipulates the first manual switch SB1 and the second manual switch SB2, can only be at most allowed
One of one relay switch K1 and the second relay switch K2 must be electrically connected, and can not allow the first relay switch K1 and the second relay
Device switch K2 must be electrically connected simultaneously, and the first power resistor R1 and the second power resistor R2 is avoided to access circuit simultaneously and causes electric current mistake
It carries.
Above-described embodiment is only the technical concepts and features for illustrating the application, and its object is to allow people that can understand this Shen
Content please is simultaneously implemented according to this, and the protection domain of the application can not be limited with this.It is all according to the application main technical schemes
The equivalent transformation or modification that Spirit Essence is done, should all cover within the protection domain of the application.
Claims (9)
1. a kind of battery pack current detecting tool, which is characterized in that including：
Battery pack (1)；
The total positive lead-out wire (2) being connected with the battery pack and total negative lead-out wire (3)；
It is connected on by Speed wiring device (9) between total positive lead-out wire (2) and total negative lead-out wire (3) and parallel with one another
First power resistor (R1) and the second power resistor (R2)；
The first relay switch (K1) connected with first power resistor (R1)；
The second relay switch (K2) connected with second power resistor (R2)；
The BMS battery management systems (4) being connected by voltage sample line (10) with the battery in the battery pack (1)；And
It is serially connected on total positive lead-out wire (2) and by current sample line (11) and BMS battery management systems (4) phase
Current divider (5) even.
2. battery pack current detecting tool according to claim 1, which is characterized in that further include：
The first fuse (6) connected with first power resistor (R1) and
The second fuse (7) connected with second power resistor (R2).
3. battery pack current detecting tool according to claim 2, which is characterized in that the first fuse (6) and institute
It is fuse to state second fuse (7).
4. battery pack current detecting tool according to claim 1, which is characterized in that gone here and there on total positive lead-out wire (2)
Charge and discharge electrical relay (K3) is associated with, the BMS battery management systems (4) pass through relay driving circuit (12) and the charge and discharge
Relay (K3) is connected.
5. battery pack current detecting tool according to claim 4, which is characterized in that gone here and there on total positive lead-out wire (2)
The third fuse (8) being associated between the current divider (5) and the charge and discharge electrical relay (K3).
6. battery pack current detecting tool according to claim 1, which is characterized in that first relay switch (K1)
It is connected with second relay switch (K2) by control relay circuit, the control relay circuit causes described
One relay switch (K1) and second relay switch (K2) cannot be also turned on.
7. battery pack current detecting tool according to claim 6, which is characterized in that the control relay circuit includes
Control power supply (13), the first manual switch (SB1) and the second manual switch (SB2), first relay switch (K1) and the
Two relay switches (K2) are connected in parallel between the positive and negative anodes of the control power supply (13), first manual switch (SB1) and institute
Stating the second manual switch (SB2) respectively has normally opened auxiliary contact and normally closed auxiliary contact, wherein, first manual switch
(SB1) normally opened auxiliary contact and the normally closed auxiliary contact of second manual switch (SB2) and first relay switch
(K1) it connects, the normally opened auxiliary contact of second manual switch (SB2) and the normally closed auxiliary of first manual switch (SB2)
It connects with second relay switch (K2) contact.
8. battery pack current detecting tool according to claim 7, which is characterized in that first manual switch (SB1)
It is self-resetting switch with second manual switch (SB2).
9. battery pack current detecting tool according to claim 1, which is characterized in that first power resistor (R1) and
Second power resistor (R2) has different resistance values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721750532.2U CN207586400U (en) | 2017-12-15 | 2017-12-15 | Battery pack current detecting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721750532.2U CN207586400U (en) | 2017-12-15 | 2017-12-15 | Battery pack current detecting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207586400U true CN207586400U (en) | 2018-07-06 |
Family
ID=62737901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721750532.2U Active CN207586400U (en) | 2017-12-15 | 2017-12-15 | Battery pack current detecting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207586400U (en) |
-
2017
- 2017-12-15 CN CN201721750532.2U patent/CN207586400U/en active Active
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| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 321025 3rd floor, No.1 Factory building, no.468, Xinji Road, qiubin street, Wucheng District, Jinhua City, Zhejiang Province (self declaration) Patentee after: Zhejiang Kangdi Intelligent Power Exchange Technology Co.,Ltd. Address before: 321000 No.1 Desheng street, Wucheng District, Jinhua City, Zhejiang Province Patentee before: JINHUA ANKAO POWER SUPPLY TECHNOLOGY Co.,Ltd. |
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