CN107565628A - A kind of high-capacity lithium battery low-voltage direct charge control system and method - Google Patents
A kind of high-capacity lithium battery low-voltage direct charge control system and method Download PDFInfo
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- CN107565628A CN107565628A CN201710796880.1A CN201710796880A CN107565628A CN 107565628 A CN107565628 A CN 107565628A CN 201710796880 A CN201710796880 A CN 201710796880A CN 107565628 A CN107565628 A CN 107565628A
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Abstract
The present invention relates 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 by charging inlet, battery management system BMS, battery core group, current sensor, charge relay and electric discharge relay group into, 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 after parallel device parallel connection.The invention also discloses a kind of control method of high-capacity lithium battery low-voltage direct charge control system.The present invention disclosure satisfy that different clients demand, realize the big multiplying power quick charge of high-capacity lithium battery and low current equalizaing charge；Charger DC Module electric current is low corresponding to the present invention, 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
The present invention relates to new energy resource power battery in the applied technical field of industrial vehicle, especially a kind of high-capacity lithium electricity
Pond low-voltage direct charge control system and method.
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, typically
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 by the factors such as cost, temperature rise restrict.
The content of the invention
The primary and foremost purpose of the present invention is to provide a kind of big multiplying power charging that can realize high-capacity lithium battery, while compatibility
The high-capacity lithium battery low-voltage direct charge control system of charge function at a slow speed.
To achieve the above object, present invention employs following technical scheme：A kind of high-capacity lithium battery low-voltage direct charging
Control system, including electric discharge end interface, electric discharge total contactor K1, 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 group are into the multiple electricity
Pond group by after parallel device parallel connection again successively with total contactor K1, the discharge end interface tandem of discharging, discharge end interface and battery pack
Between communicated by CAN.
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 inlet, 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 and the first battery management system BMS, and described the
One charging inlet is communicated by CAN 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 the first electric discharge relay K4 one end, 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 inlet, 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 into electricity
Pond management system BMS detection shunting means.
Second battery pack is by the second charging inlet, 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 and the
Two battery management system BMS are communicated, and second charging inlet is communicated by CAN 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；The second charge relay K6 is in parallel with the second electric discharge relay K5 one end, 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 two charge relay K6 other end is connected with the second charging inlet, 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 inlet uses DC charging rifle.
The second current sensor C2 is current divider, and second charging inlet uses DC charging rifle.
Another object of the present invention is to provide a kind of controlling party of high-capacity lithium battery low-voltage direct charge control system
Method, the step of this method includes following order：
(1) when charging inlet inserts charge connector, battery management system BMS, which sends to disconnect, discharges total contactor K1's
Signal, total contactor K1 that discharges disconnect, and are simultaneously emitted by disconnecting the signal of electric discharge relay, and electric discharge relay disconnects；Battery management
System BMS judges that it is charged in parallel or list to determine the charging modes needed for battery pack further according to the quantity of state that parallel device is sent
Solely charging；
(2) when battery management system BMS is judged as charged in parallel, then judge whether to meet charge condition, if meeting to fill
Electric condition, then battery management system BMS send the signal of the charge relay of adhesive battery pack to be charged, charge relay is inhaled
Close, charger starts to battery pack charged in parallel to be charged；Otherwise, battery management system BMS sends corresponding failure code letter
Number；
(3) when battery management system BMS is judged as individually charging, judge that battery is further according to the quantity of state of charging inlet
Multiple battery packs individually charge still the charging of only battery pack；
(3a) is when battery management system BMS is judged as an only battery pack charging, then judges whether to meet charging bar
Part；If meeting charge condition, battery management system BMS sends the signal of the charge relay of the adhesive battery pack to be charged,
Charge relay adhesive, charger start individually to charge to the battery pack to be charged；Otherwise, battery management system BMS sends phase
The fault code signal answered；
(3b) is when battery management system BMS is judged as that multiple battery packs individually charge, then judges whether that satisfaction is filled
Electric condition；If meeting charge condition, battery management system BMS sends the letter of the charge relay of adhesive battery pack to be charged
Number, charge relay adhesive, charger starts individually to charge to battery pack to be charged；Otherwise, battery management system BMS is sent out
Go out corresponding fault code signal.
It is described meet charge condition refer between charger and battery management system BMS normal charging connection, charger and
Battery management system BMS has established communication.
As shown from the above technical solution, the advantage of the invention is that：First, different clients demand is disclosure satisfy that, is realized big
The big multiplying power quick charge of capacity Lithium batteries and low current equalizaing charge；Second, charger DC Module electric current corresponding to the present invention
Low, price is relatively cheap；3rd, charged respectively using multiple battery packs during big multiplying power quick charge, reduce charging electricity
Stream, control battery temperature rise.
Brief description of the drawings
Fig. 1 is the system architecture diagram of the present invention；
Fig. 2 is flow chart of the method for the present invention.
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 inlet, battery management system BMS, battery core group, electricity
Flow sensor, charge relay and electric discharge relay group into, the multiple battery pack by after the parallel connection of parallel device 1 again successively with putting
Electric total contactor K1, discharge end interface tandem, discharge and are communicated between end interface and battery pack by CAN.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 battery management system BMS inspection
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 inlet, 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 and the first battery management system
BMS is communicated, and first charging inlet is communicated by CAN 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 the first electric discharge relay K4 one end, and the parallel 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 fills
The electrical relay K3 other end is connected with the first charging inlet, parallel device 1 respectively, the other end of the first electric discharge relay K4
It is connected between the total contactor K1 of electric discharge and parallel device 1.The first current sensor C1 is current divider, first charging inlet
Using DC charging rifle.
As shown in figure 1, second battery pack 3 is by the second charging inlet, 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 communicates with the second battery management system BMS, and second charging inlet passes through CAN 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；The electric discharge relays of the second charge relay K6 and second K5 one end
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 inlet, parallel device 1 respectively, it is described second electric discharge after
Electrical equipment K5 another termination parallel device 1.The second current sensor C2 is current divider, and second charging inlet uses direct current
Charging gun.
As shown in Fig. 2 this control method includes the step of following order：
(1) when charging inlet inserts charge connector, battery management system BMS, which sends to disconnect, discharges total contactor K1's
Signal, total contactor K1 that discharges disconnect, and are simultaneously emitted by disconnecting the signal of electric discharge relay, and electric discharge relay disconnects；Battery management
System BMS judges that it is charged in parallel or list to determine the charging modes needed for battery pack further according to the quantity of state that parallel device 1 is sent
Solely charging；
(2) when battery management system BMS is judged as charged in parallel, then judge whether to meet charge condition, if meeting to fill
Electric condition, then battery management system BMS send the signal of the charge relay of adhesive battery pack to be charged, charge relay is inhaled
Close, charger starts to battery pack charged in parallel to be charged；Otherwise, battery management system BMS sends corresponding failure code letter
Number；
(3) when battery management system BMS is judged as individually charging, judge that battery is further according to the quantity of state of charging inlet
Multiple battery packs individually charge still the charging of only battery pack；
(3a) is when battery management system BMS is judged as an only battery pack charging, then judges whether to meet charging bar
Part；If meeting charge condition, battery management system BMS sends the signal of the charge relay of the adhesive battery pack to be charged,
Charge relay adhesive, charger start individually to charge to the battery pack to be charged；Otherwise, battery management system BMS sends phase
The fault code signal answered；
(3b) is when battery management system BMS is judged as that multiple battery packs individually charge, then judges whether that satisfaction is filled
Electric condition；If meeting charge condition, battery management system BMS sends the letter of the charge relay of adhesive battery pack to be charged
Number, charge relay adhesive, charger starts individually to charge to battery pack to be charged；Otherwise, battery management system BMS is sent out
Go out corresponding fault code signal.
It is described meet charge condition refer between charger and battery management system BMS normal charging connection, charger and
Battery management system BMS has established communication.
In summary, the present invention disclosure satisfy that different clients demand, realize the big multiplying power quick charge of high-capacity lithium battery and
Low current equalizaing charge；Charger DC Module electric current is low corresponding to the present invention, and price is relatively cheap；In big multiplying power quick charge
During charged respectively using multiple battery packs, reduce charging current, control battery temperature rise.
Claims (8)
- 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 and multiple battery packs, each battery pack is by charging inlet, battery management system BMS, battery core group, electric current Sensor, charge relay and electric discharge relay group into, the multiple battery pack by after parallel device parallel connection again successively with electric discharge Total contactor K1, discharge end interface tandem, discharge and are communicated between end interface and battery pack by CAN.
- 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 and the second battery pack, and first battery pack is by the first charging inlet, the first charging Relay K3, the first electric discharge relay K4, the first battery management system BMS, the first battery core group and the first current sensor C1 groups Into the electric discharge end interface is communicated by CAN and the first battery management system BMS, and first charging inlet passes through CAN Bus is communicated with the first battery management system BMS, and the first battery management system BMS is powered by the first battery core group；Described first fills Electrical relay K3 is in parallel with the first electric discharge relay K4 one end, and the parallel connected end is connected with the first battery core group, and the first electric current passes Sensor C1 is set between the parallel connected end and the first battery core group, and the other end of the first charge relay K3 fills with first respectively Electrical interface, parallel device are connected, and described the another of first electric discharge relay K4 is terminated between the total contactor K1 of electric discharge and parallel device.
- 3. high-capacity lithium battery low-voltage direct charge control system according to claim 1, it is characterised in that：The parallel connection Device includes parallel contactor K2 and for detecting the state of parallel device and its quantity of state being sent to battery management system BMS inspection Survey shunting means.
- 4. high-capacity lithium battery low-voltage direct charge control system according to claim 2, it is characterised in that：Described second Battery pack is by the second charging inlet, the second charge relay K6, the second electric discharge relay K5, the second battery management system BMS, the Two battery core groups and the second current sensor C2 compositions, the electric discharge end interface pass through CAN and the second battery management system BMS Communication, second charging inlet are communicated by CAN and the second battery management system BMS, the second battery management system BMS Powered by the second battery core group, pass through CAN between the second battery management system BMS and the first battery management system BMS Communication；The second charge relay K6 is in parallel with the second electric discharge relay K5 one end, and the parallel connected end and the second battery core group It is connected, the second current sensor C2 is set between the parallel connected end and the second battery core group, and the second charge relay K6's is another One end is connected with the second charging inlet, parallel device respectively, another termination parallel device of the second electric discharge relay K5.
- 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 inlet 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 inlet uses DC charging rifle.
- 7. the controlling party of high-capacity lithium battery low-voltage direct charge control system according to any one of claim 1 to 6 Method, the step of this method includes following order：(1) when charging inlet inserts charge connector, battery management system BMS sends the letter for disconnecting total contactor K1 that discharges Number, total contactor K1 that discharges disconnects, and is simultaneously emitted by disconnecting the signal of electric discharge relay, and electric discharge relay disconnects；Battery management system The quantity of state that system BMS is sent further according to parallel device judges, determines charging modes needed for battery pack for charged in parallel or independent Charging；(2) when battery management system BMS is judged as charged in parallel, then judge whether to meet charge condition, if meeting charging bar Part, then battery management system BMS send the signal of the charge relay of adhesive battery pack to be charged, charge relay adhesive, fill Motor starts to battery pack charged in parallel to be charged；Otherwise, battery management system BMS sends corresponding fault code signal；(3) when battery management system BMS is judged as individually charging, judge battery to be multiple further according to the quantity of state of charging inlet Battery pack individually charges still the charging of only battery pack；(3a) is when battery management system BMS is judged as an only battery pack charging, then judges whether to meet charge condition；If Meet charge condition, then battery management system BMS sends the signal of the charge relay of the adhesive battery pack to be charged, charge after Electrical equipment adhesive, charger start individually to charge to the battery pack to be charged；Otherwise, battery management system BMS sends corresponding event Hinder code signal；(3b) is when battery management system BMS is judged as that multiple battery packs individually charge, then judges whether to meet charging bar Part；If meeting charge condition, battery management system BMS sends the signal of the charge relay of adhesive battery pack to be charged, fills Electrical relay adhesive, charger start individually to charge to battery pack to be charged；Otherwise, battery management system BMS sends phase The fault code signal answered.
- 8. control method according to claim 7, it is characterised in that：It is described to meet that charge condition refers to charger and battery Charging connection is normal between management system BMS, charger and battery management system BMS have established communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710796880.1A CN107565628A (en) | 2017-09-06 | 2017-09-06 | A kind of high-capacity lithium battery low-voltage direct charge control system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710796880.1A CN107565628A (en) | 2017-09-06 | 2017-09-06 | A kind of high-capacity lithium battery low-voltage direct charge control system and method |
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| CN107565628A true CN107565628A (en) | 2018-01-09 |
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| CN201710796880.1A Pending CN107565628A (en) | 2017-09-06 | 2017-09-06 | A kind of high-capacity lithium battery low-voltage direct charge control system and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109802463A (en) * | 2019-02-28 | 2019-05-24 | 维沃移动通信有限公司 | Charging circuit, electricity acquisition methods and terminal |
| CN110065402A (en) * | 2018-01-22 | 2019-07-30 | 丰田自动车株式会社 | Vehicle |
| CN110843599A (en) * | 2019-11-26 | 2020-02-28 | 安徽合力股份有限公司 | High-capacity lithium battery pack charging and discharging control system and control method thereof |
| CN110932348A (en) * | 2019-11-27 | 2020-03-27 | 苏州佳世达光电有限公司 | Electronic device charging system and charging method |
| CN112202219A (en) * | 2020-09-21 | 2021-01-08 | 重庆蓝岸通讯技术有限公司 | Intercom high-capacity battery charging device and charging method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110065402A (en) * | 2018-01-22 | 2019-07-30 | 丰田自动车株式会社 | Vehicle |
| CN110065402B (en) * | 2018-01-22 | 2022-07-26 | 丰田自动车株式会社 | Vehicle with a steering wheel |
| CN109802463A (en) * | 2019-02-28 | 2019-05-24 | 维沃移动通信有限公司 | Charging circuit, electricity acquisition methods and terminal |
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| CN110843599A (en) * | 2019-11-26 | 2020-02-28 | 安徽合力股份有限公司 | High-capacity lithium battery pack charging and discharging control system and control method thereof |
| CN110932348A (en) * | 2019-11-27 | 2020-03-27 | 苏州佳世达光电有限公司 | Electronic device charging system and charging method |
| CN112202219A (en) * | 2020-09-21 | 2021-01-08 | 重庆蓝岸通讯技术有限公司 | Intercom high-capacity battery charging device and charging method |
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