CN202997639U - Fast charging system of electric vehicle - Google Patents
Fast charging system of electric vehicle Download PDFInfo
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- CN202997639U CN202997639U CN 201220723943 CN201220723943U CN202997639U CN 202997639 U CN202997639 U CN 202997639U CN 201220723943 CN201220723943 CN 201220723943 CN 201220723943 U CN201220723943 U CN 201220723943U CN 202997639 U CN202997639 U CN 202997639U
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Abstract
The utility model brings forward a fast charging system of an electric vehicle and belongs to the field of charging. The system comprises a power battery pack, N charging sockets, N current sensors connected in series and a controller, wherein the anode of the power battery pack is connected with the anodes of various charging sockets through a charging socket anode relay; the cathode of the power battery pack is connected with a free end of the first current sensor, serial nodes of the ith current sensor and the i+1th current sensor are connected with the cathode of the ith charging socket through a charging socket cathode relay, and the free end of the Nth current sensor is connected with the Nth charging socket through a discharging socket cathode relay; the controller is connected with the charging sockets respectively; the control end of the controller is connected with the current sensors, the charging socket anode relays and the charging socket cathode relays respectively; and a current signal input end of the controller is connected with the current sensors respectively. The system shortens charging time and solves the problem of large current balanced conduction.
Description
Technical field
The utility model relates to a kind of charging system of electric powercar, relates in particular to a kind of electric vehicle quick charge system that can realize quick charge.
Background technology
Propelling along with China's energy-saving and emission-reduction policy, the quantity of integral new-energy passenger is more and more, particularly by power-actuated pure electric coach, because adopting driven by power, it does not use fuel oil, can effectively reduce China to the dependence of petroleum resources, limited oil can be used for prior aspect, and the waste gas of electric motor coach generation when work without internal-combustion engines vehicle, not producing exhaust emission, is the best product of realizing traffic aspect energy-saving and emission-reduction.
Electric motor coach adopts normal charge method and battery pack quick change method to complete replenishing of the energy content of battery usually at present.Adopt the normal charge mode, a, chassis long due to the charging interval must be joined a charging device and a charging station, therefore has the drawback that charging device quantity is many, floor space large, investment is large.Adopt battery pack quick change mode, a chassis must be equipped with 2 Battery packs, and need change battery pack 1-2 time every day, and the quick-changing type charging station need to be equipped with the battery robot that changes the outfit, so has also that equipment is many, management difficulty is large, floor space is large, invests large drawback.
The utility model content
The utility model is intended to solve the technical problem that exists in prior art, has proposed a kind of electric vehicle quick charge system to special innovation, has shortened the charging interval, and has solved the problem of large current balance conduction.
In order to realize above-mentioned purpose of the present utility model, the utility model provides a kind of electric vehicle quick charge system, it is characterized in that: N the cradle, N current sensor and the controller of connecting that comprise power battery pack, be arranged in electric motor car and be used for being connected with charger, the positive pole of wherein said power battery pack connects respectively the positive pole of each cradle by the anodal relay of a cradle;
The negative pole of described power battery pack connects the free end of the 1st current sensor, i current sensor is connected the negative pole of i cradle with the series connection node of i+1 current sensor by a cradle negative pole relay, and the free end of N current sensor connects N cradle by a cradle negative pole relay, 1＜i＜N-1, N〉3 and i and N be integer;
Described controller is connected with each cradle respectively;
The control end of described controller is connected with each current sensor, the anodal relay of each cradle and each cradle negative pole relay respectively;
The current signal input of described controller is connected with each current sensor respectively.
The utility model adopts a plurality of charging guns to charge simultaneously, shortened the charging interval, realized quick charge, and the charging current of each cradle of Real-time Collection in charging process, controller sends electric current adjustment instruction to charger according to the charging current of each cradle, charger is adjusted the charging current of cradle, makes the charging current of each cradle equate, thereby has solved the problem of large current balance conduction.
Described controller also is connected with this power battery pack.The state of charge information of the utility model collection power battery pack and voltage, temperature parameter have improved the automaticity in the charging process.
This electric vehicle quick charge system also comprises anodal main relay and negative pole main relay, the positive pole of wherein said power battery pack is by this positive pole main relay output positive current, and the negative pole of described power battery pack is successively by the 1st current sensor, this negative pole main relay output negative current;
The control end of described controller is connected with this positive pole main relay, negative pole main relay respectively.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1, the utility model adopts a plurality of charging guns to charge simultaneously, shortened the charging interval, realized quick charge, and the charging current of each cradle of Real-time Collection in charging process, controller sends electric current adjustment instruction to charger according to the charging current of each cradle, charger is adjusted the charging current of cradle, makes the charging current of each cradle equate, thereby has solved the problem of large current balance conduction;
2, the utility model judges whether complete charge according to the state of charge information of power battery pack, and judges whether to reduce the charging total current according to voltage, the temperature parameter of power battery pack, has improved the automaticity in the charging process.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the circuit theory diagrams of the first embodiment of the present utility model;
Fig. 2 is the circuit theory diagrams of the second embodiment of the present utility model;
Fig. 3 is the circuit theory diagrams of the 3rd embodiment of the present utility model;
Fig. 4 is flow chart of the present utility model.
Embodiment
The below describes embodiment of the present utility model in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, unless otherwise prescribed and limit, need to prove, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, can be also the connection of two element internals, can be directly to be connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
N cradle, N current sensor and the controller of connecting that this electric vehicle quick charge system comprises power battery pack, is arranged in electric motor car and is used for being connected with charger, wherein the positive pole of this power battery pack connects respectively the positive pole of each cradle by the anodal relay of a cradle; The negative pole of this power battery pack connects the free end of the 1st current sensor, i current sensor is connected the negative pole of i cradle with the series connection node of i+1 current sensor by a cradle negative pole relay, and the free end of N current sensor connects N cradle by a cradle negative pole relay, 1＜i＜N-1, N〉3 and i and N be integer.
This controller is connected with each cradle respectively; The control end of controller is connected with each current sensor, the anodal relay of each cradle and each cradle negative pole relay respectively; The current signal input of controller is connected with each current sensor respectively; Controller also is connected with this power battery pack.
In addition, this electric vehicle quick charge system also comprises anodal main relay and negative pole main relay, wherein the positive pole of this power battery pack is by this positive pole main relay output positive current, and the negative pole of this power battery pack is successively by the 1st current sensor, this negative pole main relay output negative current; The control end of described controller is connected with this positive pole main relay, negative pole main relay respectively.
in the first embodiment of the present utility model, take two cradles as example, as shown in Figure 1, this electric vehicle quick charge system comprises power battery pack 12, the first cradle 1, the second cradle 2, the anodal relay 6 of the first cradle, the anodal relay 7 of the second cradle, the first cradle negative pole relay 8, the second cradle negative pole relay 9, the first current sensor 10, the second current sensor 11 and controller 3, wherein the positive pole of this power battery pack 12 connects the first cradle 1 and passes through the positive pole that the anodal relay 7 of the second cradle connects the second cradle 2 by the anodal relay 6 of the first cradle, the first current sensor 10 is connected with the second current sensor 11, the negative pole of power battery pack connects the free end of the first current sensor 10, the first current sensor 10 is connected the negative pole of the first cradle 1 with the series connection node of the second current sensor 11 by the first cradle negative pole relay 8, and the free end of the second current sensor 11 connects the negative pole of the second cradle 2 by the second cradle negative pole relay 9.
The control end of this controller 3 is connected with the anodal relay 6 of the first cradle, the anodal relay 7 of the second cradle, the first cradle negative pole relay 8, the second cradle negative pole relay 9, the first current sensor 10 and the current sensor 11 of being connected respectively, be used for controlling the break-make of the anodal relay 6 of the first cradle, the anodal relay 7 of the second cradle, the first cradle negative pole relay 8 and the second cradle negative pole relay 9, and control the first current sensor 10 and the second current sensor 11 is started working, enter current detecting and computing mode.
when two charging guns insert respectively the first cradle 1, after the second cradle 2, the first cradle 1, the second cradle 2 sends charging signals to controller 3, controller 3 is controlled the anodal relay 6 of the first cradle, the anodal relay 7 of the second cradle, the first cradle negative pole relay 8 and the second cradle negative pole relay 9 closures, controller 3 is controlled the first current sensor 10, the second current sensor 11 enters current detecting and computing mode, charger begins to power battery pack 12 chargings, the first current sensor 10, the second current sensor 11 difference acquisition stream are through the current value of corresponding cradle, and send detection information to controller 3.Under normal circumstances, the size of current that flows through the second current sensor 11 be flow through the first current sensor 10 size of current 1/2, when detect the size of current that flows through the second current sensor 11 be not flow through the first current sensor 10 size of current 1/2 the time, controller 3 sends electric current and adjusts instruction to the first cradle 1, the second cradle 2 by the CAN connection, the first cradle 1 and the second cradle 2 are adjusted instruction with electric current and are passed to charger, charger is adjusted charging current, guarantees the current balance conduction.
In the second embodiment of the present utility model, as shown in Figure 2, the present embodiment is with the difference of the first embodiment: controller 3 is connected with power battery pack 12 by the CAN bus, when controller 3 detects electric weight in power battery pack 12 and is full of, controller 3 sends the charging END instruction by the CAN bus to the first cradle 1 and the second cradle 2, the END instruction of charging of the first cradle 1 and the second cradle 2 is passed to charger, the charger complete charge.It is at least a when surpassing prescribed limits in the voltage of each cell, pressure reduction, temperature and the temperature difference in controller 3 detects power battery pack 12, send adjustment instruction by the first cradle 1 and the second cradle 2 to charger by controller 3, charger reduces the charging total current.
In the 3rd embodiment of the present utility model, as shown in Figure 3, the present embodiment is with the difference of the first embodiment: controller 3 is connected with power battery pack 12 by the CAN bus, controller 3 is connected with anodal main relay 4, negative pole main relay 5, and controller is controlled the break-make of anodal main relay 4, negative pole main relay 5; The positive pole of power battery pack 12 connects the output positive current by the input of anodal main relay 4; The negative pole of power battery pack 12 is successively by the first current sensor 10, negative pole main relay 5 output negative currents.
As shown in Figure 4, this electric vehicle quick charge method comprises the following steps:
S1, after the charging gun of charger inserts cradle, corresponding cradle sends charging signals to controller; S2, controller are controlled the anodal relay of each cradle, each cradle negative pole relay conducting, and charger begins to charge to power battery pack.
this controller is also controlled each current sensor and is started working in step S2, and whether the charging current that judges each cradle according to the current value that current sensor collects equates: if the current value that i current sensor detects is not equal to (i-1)/N, the charging current that represents cradle is unequal, under the constant prerequisite of charging total current, this controller sends electric current by corresponding cradle and adjusts instruction to charger, for the cradle of charging current less than 1/N, this charger increases its charging current, for the cradle of charging current less than 1/N, this charger reduces its charging current.
For example, in the first embodiment of the present utility model, when detect the size of current that flows through the second current sensor 11 be not flow through the first current sensor 10 size of current 1/2 the time, controller 3 sends electric current and adjusts instruction to the first cradle 1, the second cradle 2 by the CAN connection, the first cradle 1 and the second cradle 2 are adjusted instruction with electric current and are passed to charger, charger is adjusted charging current, guarantees the current balance conduction.
If the current value that i current sensor detects equals (i-1)/N, the charging current that represents cradle equates, this controller judges whether complete charge according to the state of charge information SOC of power battery pack: this charger continues to this power battery pack charging when SOC＜100%; This controller sends the complete charge instruction to this charger by this cradle when SOC=100%, the charger complete charge.
In addition, this electric vehicle quick charge method also comprises the step that this controller is monitored the parameter of this power battery pack: controller gathers voltage and the temperature of each cell in this power battery pack, and judge at least a prescribed limits that whether surpasses in voltage, pressure reduction, temperature and the temperature difference of each cell: if surpass this prescribed limits, this controller sends electric current by corresponding cradle and adjusts instruction to this charger, this charger reduces the charging total current, otherwise this charger is not adjusted the charging total current, continues to this power battery pack charging.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present utility model and aim can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.
Claims (3)
1. electric vehicle quick charge system, it is characterized in that: N the cradle, N current sensor and the controller of connecting that comprise power battery pack, be arranged in electric motor car and be used for being connected with charger, the positive pole of wherein said power battery pack connects respectively the positive pole of each cradle by the anodal relay of a cradle;
The negative pole of described power battery pack connects the free end of the 1st current sensor, i current sensor is connected the negative pole of i cradle with the series connection node of i+1 current sensor by a cradle negative pole relay, and the free end of N current sensor connects N cradle by a cradle negative pole relay, 1＜i＜N-1, N〉3 and i and N be integer;
Described controller is connected with each cradle respectively; The control end of described controller is connected with each current sensor, the anodal relay of each cradle and each cradle negative pole relay respectively; The current signal input of described controller is connected with each current sensor respectively.
2. electric vehicle quick charge system according to claim 1, it is characterized in that: described controller also is connected with this power battery pack.
3. electric vehicle quick charge system according to claim 1 and 2, it is characterized in that: also comprise anodal main relay and negative pole main relay, the positive pole of wherein said power battery pack is by this positive pole main relay output positive current, and the negative pole of described power battery pack is successively by the 1st current sensor, this negative pole main relay output negative current;
The control end of described controller is connected with this positive pole main relay, negative pole main relay respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723943 CN202997639U (en) | 2012-12-25 | 2012-12-25 | Fast charging system of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723943 CN202997639U (en) | 2012-12-25 | 2012-12-25 | Fast charging system of electric vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN202997639U true CN202997639U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220723943 Expired - Fee Related CN202997639U (en) | 2012-12-25 | 2012-12-25 | Fast charging system of electric vehicle |
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| Country | Link |
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| CN (1) | CN202997639U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022547A (en) * | 2014-06-05 | 2014-09-03 | 深圳市沃特玛电池有限公司 | Double-charging-gun control system and method |
| CN105576610A (en) * | 2015-12-21 | 2016-05-11 | 珠海格力电器股份有限公司 | Motor failure control method and device |
| CN106300514A (en) * | 2016-08-25 | 2017-01-04 | 珠海银隆电器有限公司 | Electric automobile fast charging and discharging system, method and electric automobile |
-
2012
- 2012-12-25 CN CN 201220723943 patent/CN202997639U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022547A (en) * | 2014-06-05 | 2014-09-03 | 深圳市沃特玛电池有限公司 | Double-charging-gun control system and method |
| CN105576610A (en) * | 2015-12-21 | 2016-05-11 | 珠海格力电器股份有限公司 | Motor failure control method and device |
| CN105576610B (en) * | 2015-12-21 | 2018-04-13 | 珠海格力电器股份有限公司 | Motor failure control method and device |
| CN106300514A (en) * | 2016-08-25 | 2017-01-04 | 珠海银隆电器有限公司 | Electric automobile fast charging and discharging system, method and electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20201225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |