CN207320871U - A kind of high-capacity lithium battery low-voltage direct charge control system - Google Patents
A kind of high-capacity lithium battery low-voltage direct charge control system Download PDFInfo
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- CN207320871U CN207320871U CN201721138742.6U CN201721138742U CN207320871U CN 207320871 U CN207320871 U CN 207320871U CN 201721138742 U CN201721138742 U CN 201721138742U CN 207320871 U CN207320871 U CN 207320871U
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- battery
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Abstract
It the utility model is related to a kind of high-capacity lithium battery low-voltage direct charge control system, including electric discharge end interface, electric discharge total contactor, parallel device and multiple battery packs, each battery pack is by charging interface, battery management system BMS, battery core group, current sensor, charge relay and electric discharge relay composition, the multiple battery pack is by, again successively with total contactor, the discharge end interface tandem of discharging, discharging and being communicated between end interface and battery pack by CAN bus after parallel device parallel connection.The utility model disclosure satisfy that different clients demand, realize the big multiplying power quick charge of high-capacity lithium battery and low current equalizaing charge；The corresponding charger DC Module electric current of the utility model is low, and price is relatively cheap；Charged respectively using multiple battery packs during big multiplying power quick charge, reduce charging current, control battery temperature rise.
Description
Technical field
It the utility model is related to applied technical field of the new energy resource power battery in industrial vehicle, especially a kind of large capacity
Lithium battery low-voltage direct charge control system.
Background technology
With attention of the people to environment, new energy is developed rapidly in all trades and professions, the electric fork of current small tonnage
Car applies lithium battery technology, because small tonnage electri forklift is limited using a Battery case by vehicle space again, generally
Outfit battery capacity is smaller, and the big multiplying power charging advantage of lithium battery can be embodied using common low-voltage, high-current charger.So
And the technical bottleneck that the lithium battery electrical forklift of large-tonnage runs into key in application lithium battery is its big multiplying power charging problems, together
When be subject to the factors such as cost, temperature rise restrict.
Utility model content
The purpose of this utility model is to provide a kind of big multiplying power that can realize high-capacity lithium battery to charge, while compatible
The high-capacity lithium battery low-voltage direct charge control system of charge function at a slow speed.
To achieve the above object, the utility model employs following technical scheme：A kind of high-capacity lithium battery low-voltage direct
Charge control system, including electric discharge end interface, electric discharge total contactor K1, parallel device and multiple battery packs, each battery pack by
Charging interface, battery management system BMS, battery core group, current sensor, charge relay and electric discharge relay composition are described more
A battery pack is by the way that, again successively with total contactor K1, the discharge end interface tandem of discharging, discharge end interface and electricity after parallel device parallel connection
Communicated between the group of pond by CAN bus.
The number of the battery pack is two, i.e. the first battery pack and the second battery pack, first battery pack is by first
Charging interface, the first charge relay K3, the first electric discharge relay K4, the first battery management system BMS, the first battery core group and the
One current sensor C1 is formed, and the electric discharge end interface is communicated by CAN bus and the first battery management system BMS, and described the
One charging interface is communicated by CAN bus and the first battery management system BMS, and the first battery management system BMS is by the first battery core
Group power supply；The first charge relay K3 is in parallel with one end of the first electric discharge relay K4, and the parallel connected end and the first battery core
Group is connected, and the first current sensor C1 is set between the parallel connected end and the first battery core group, the first charge relay K3's
The other end is connected with the first charging interface, parallel device respectively, and the another of the first electric discharge relay K4 terminates at electric discharge and always connect
Between tentaculum K1 and parallel device.
The parallel device includes parallel contactor K2 and for detecting the state of parallel device and its quantity of state being sent to electricity
The detection shunting means of pond management system BMS.
Second battery pack is by the second charging interface, the second charge relay K6, the second electric discharge relay K5, the second electricity
Pond management system BMS, the second battery core group and the second current sensor C2 compositions, the electric discharge end interface pass through CAN bus and the
Two battery management system BMS are communicated, and second charging interface is communicated by CAN bus and the second battery management system BMS, the
Two battery management system BMS are powered by the second battery core group, the second battery management system BMS and the first battery management system
Communicated between BMS by CAN bus；The second charge relay K6 is in parallel with one end of the second electric discharge relay K5, and should
Parallel connected end is connected with the second battery core group, and the second current sensor C2 is set between the parallel connected end and the second battery core group, and described
The other end of two charge relay K6 is connected with the second charging interface, parallel device respectively, and the second electric discharge relay K5's is another
One termination parallel device.
The first current sensor C1 is current divider, and first charging interface uses DC charging rifle.
The second current sensor C2 is current divider, and second charging interface uses DC charging rifle.
As shown from the above technical solution, the utility model has the advantage of：First, it disclosure satisfy that different clients demand, it is real
The existing big multiplying power quick charge of high-capacity lithium battery and low current equalizaing charge；Second, the corresponding charger direct current of the utility model
Blocks current is low, and price is relatively cheap；3rd, charged, dropped respectively using multiple battery packs during big multiplying power quick charge
Low charging current, controls battery temperature rise.
Brief description of the drawings
Fig. 1 is the system architecture diagram of the utility model.
Embodiment
As shown in Figure 1, a kind of high-capacity lithium battery low-voltage direct charge control system, including electric discharge end interface, electric discharge are always
Contactor K1, parallel device 1 and multiple battery packs, each battery pack is by charging interface, battery management system BMS, battery core group, electricity
Flow sensor, charge relay and electric discharge relay composition, the multiple battery pack by after 1 parallel connection of parallel device again successively with putting
Electric total contactor K1, discharge end interface tandem, discharge and are communicated between end interface and battery pack by CAN bus.The parallel device 1
Including parallel contactor K2 and for detecting the state of parallel device 1 and its quantity of state being sent to the inspection of battery management system BMS
Survey shunting means.
As shown in Figure 1, the number of the battery pack is two, i.e. the first battery pack 2 and the second battery pack 3, described first
Battery pack 2 by the first charging interface, the first charge relay K3, the first electric discharge relay K4, the first battery management system BMS,
First battery core group and the first current sensor C1 compositions, the electric discharge end interface pass through CAN bus and the first battery management system
BMS is communicated, and first charging interface is communicated by CAN bus and the first battery management system BMS, the first battery management system
BMS is powered by the first battery core group；The first charge relay K3 is in parallel with one end of the first electric discharge relay K4, and this is simultaneously
Connection end is connected with the first battery core group, and the first current sensor C1 is set between the parallel connected end and the first battery core group, and described first
The other end of charge relay K3 is connected with the first charging interface, parallel device 1 respectively, and the first electric discharge relay K4's is another
Terminate between the total contactor K1 of electric discharge and parallel device 1.The first current sensor C1 is current divider, first charging
Mouth uses DC charging rifle.
As shown in Figure 1, second battery pack 3 is by the second charging interface, the second charge relay K6, the second electric discharge relay
Device K5, the second battery management system BMS, the second battery core group and the second current sensor C2 compositions, the electric discharge end interface pass through
CAN bus is communicated with the second battery management system BMS, and second charging interface passes through CAN bus and the second battery management system
The BMS that unites is communicated, and the second battery management system BMS is powered by the second battery core group, the electricity of the second battery management system BMS and first
Communicated between the management system BMS of pond by CAN bus；One end of the electric discharge relays of the second charge relay K6 and second K5
Parallel connection, and the parallel connected end is connected with the second battery core group, the second current sensor C2 be set in the parallel connected end and the second battery core group it
Between, the other end of the second charge relay K6 is connected with the second charging interface, parallel device 1 respectively, it is described second electric discharge after
Another termination parallel device 1 of electric appliance K5.The second current sensor C2 is current divider, and second charging interface uses direct current
Charging gun.
In conclusion the utility model disclosure satisfy that different clients demand, realize that the big multiplying power of high-capacity lithium battery is quickly filled
Electricity and low current equalizaing charge；The corresponding charger DC Module electric current of the utility model is low, and price is relatively cheap；In big multiplying power
Charged respectively using multiple battery packs during quick charge, reduce charging current, control battery temperature rise.
Claims (6)
- A kind of 1. high-capacity lithium battery low-voltage direct charge control system, it is characterised in that：Always connect including electric discharge end interface, electric discharge Tentaculum K1, parallel device (1) and multiple battery packs, each battery pack is by charging interface, battery management system BMS, battery core group, electricity Flow sensor, charge relay and electric discharge relay composition, the multiple battery pack by parallel device (1) it is in parallel after again successively with Discharge total contactor K1, discharge end interface tandem, discharges and is communicated between end interface and battery pack by CAN bus.
- 2. high-capacity lithium battery low-voltage direct charge control system according to claim 1, it is characterised in that：The battery The number of group is two, i.e. the first battery pack (2) and the second battery pack (3), first battery pack (2) is by the first charging Mouth, the first charge relay K3, the first electric discharge relay K4, the first battery management system BMS, the first battery core group and the first electric current Sensor C1 is formed, and the electric discharge end interface is communicated by CAN bus and the first battery management system BMS, first charging Interface is communicated by CAN bus and the first battery management system BMS, and the first battery management system BMS is powered by the first battery core group； The first charge relay K3 is in parallel with one end of the first electric discharge relay K4, and the parallel connected end is connected with the first battery core group, First current sensor C1 is set between the parallel connected end and the first battery core group, the other end point of the first charge relay K3 It is not connected with the first charging interface, parallel device (1), described the another of first electric discharge relay K4 terminates at the total contactor K1 of electric discharge Between parallel device (1).
- 3. high-capacity lithium battery low-voltage direct charge control system according to claim 1, it is characterised in that：The parallel connection Device (1) includes parallel contactor K2 and for detecting the state of parallel device (1) and its quantity of state being sent to battery management system The detection shunting means of BMS.
- 4. high-capacity lithium battery low-voltage direct charge control system according to claim 2, it is characterised in that：Described second Battery pack (3) is by the second charging interface, the second charge relay K6, the second electric discharge relay K5, the second battery management system BMS, the second battery core group and the second current sensor C2 compositions, the electric discharge end interface pass through CAN bus and the second battery management System BMS is communicated, and second charging interface is communicated by CAN bus and the second battery management system BMS, the second battery management System BMS is powered by the second battery core group, is passed through between the second battery management system BMS and the first battery management system BMS CAN bus communicates；The second charge relay K6 is in parallel with one end of the second electric discharge relay K5, and the parallel connected end and second Battery core group is connected, and the second current sensor C2 is set between the parallel connected end and the second battery core group, second charge relay The other end of K6 is connected with the second charging interface, parallel device (1) respectively, and another termination of the second electric discharge relay K5 is in parallel Device (1).
- 5. high-capacity lithium battery low-voltage direct charge control system according to claim 2, it is characterised in that：Described first Current sensor C1 is current divider, and first charging interface uses DC charging rifle.
- 6. high-capacity lithium battery low-voltage direct charge control system according to claim 4, it is characterised in that：Described second Current sensor C2 is current divider, and second charging interface uses DC charging rifle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721138742.6U CN207320871U (en) | 2017-09-06 | 2017-09-06 | A kind of high-capacity lithium battery low-voltage direct charge control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721138742.6U CN207320871U (en) | 2017-09-06 | 2017-09-06 | A kind of high-capacity lithium battery low-voltage direct charge control system |
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| CN207320871U true CN207320871U (en) | 2018-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193881A (en) * | 2018-11-23 | 2019-01-11 | 北斗航天汽车（北京）有限公司 | Battery pack and fast charge method with quick-charge function |
-
2017
- 2017-09-06 CN CN201721138742.6U patent/CN207320871U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193881A (en) * | 2018-11-23 | 2019-01-11 | 北斗航天汽车（北京）有限公司 | Battery pack and fast charge method with quick-charge function |
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