CN107571739A - Pre-charging device, system and method - Google Patents
Pre-charging device, system and method Download PDFInfo
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- CN107571739A CN107571739A CN201710894899.XA CN201710894899A CN107571739A CN 107571739 A CN107571739 A CN 107571739A CN 201710894899 A CN201710894899 A CN 201710894899A CN 107571739 A CN107571739 A CN 107571739A
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The present invention provides a kind of pre-charging device, system and method, for to loading into line precharge, the pre-charging device includes battery system and precharge circuitry, the precharge circuitry includes the second branch road being made up of total positive high voltage contactor, and the tie point being made up of the first pre-charge-relay, the first pre-charge resistance and the first controllable pre-charge circuit submodule.Wherein, tie point and the second branch circuit parallel connection.First controllable pre-charge circuit submodule includes the second pre-charge-relay and the second pre-charge resistance being connected in parallel.The pre-charging device collectively forms equivalent pre-charge resistance by the series connection of multiple power resistors, has effectively shared power requirement of the system to single pre-charge resistance.The pre-charging device uses multistage pre-charge circuit technology, and pre-charge current size can be effectively controlled in pre-charge process, can especially improve the pre-charge current size in precharge later stage, so as to effectively shorten precharge time, lifts vehicle performance and Consumer's Experience.
Description
Technical field
The present invention relates to new-energy automobile power technique fields, in particular to a kind of pre-charging device, system and side
Method.
Background technology
There are rechargeable energy storage device of the Battery pack system as vehicle, the energy storage in the high-pressure system of new-energy automobile
Device provides electric energy for motor, so as to reach the purpose of driving vehicle traveling.Electric machine controller is generally in system input
Multiple large bulk capacitances in parallel are set, and the large bulk capacitance is used to filter and the input voltage of stable motor.Its in vehicle
His high-voltage system load, such as dc-dc, compressor of air conditioner, is equally built-in with front end electric capacity.Work as vehicle launch, carry out
During high pressure power on operation, to reduce rush of current during system electrification, and dash current damage high voltage connector and fusing are prevented
Device, breakdown front end electric capacity and acceleration cell degradation, it is necessary to pre-charge circuit is configured between battery system and high-voltage load.
Pre-charge circuit of the prior art is typically made up of pre-charge-relay and pre-charge resistance, wherein precharge electricity
Hinder for single power resistor.This pre-charge circuit, in pre-charge process, raised with the voltage at load capacitance both ends, in advance
Charging current also will constantly decline, and especially phase, pre-charge current can be very small after precharging, and only in the mA orders of magnitude, this will be tight
Extend system precharge time again, increase electric total time on vehicle high-voltage.Existing pre-charge resistance is only with single power electricity
The mode of resistance, when Single Point of Faliure occurs for pre-charge resistance, if failure mode is short-circuit, closure pre-charge-relay progress preliminary filling
Instantaneous current impact can not be avoided when electric.Also, pre-charge resistance is only with single power resistor, in vehicle high-voltage system
Unite voltage platform is higher, high-voltage load end equivalent capacity is larger, it is higher to pre-charge resistance power demand in the case of, this will be big
The parts selection scope of big limitation pre-charge resistance, increase the parts selection difficulty of pre-charge resistance.
The content of the invention
In view of this, it is an object of the invention to provide a kind of pre-charging device, system and method, to solve above-mentioned ask
Topic.
Present pre-ferred embodiments provide a kind of pre-charging device, for loading into line precharge, the preliminary filling Denso
Put including battery system and precharge circuitry, the cathode output end of the battery system and the precharge circuitry
First end connection, the second end of the precharge circuitry is connected with the first end of the load, the battery system
Cathode output end is connected by total negative high voltage contactor S1 with the second end of the load；
The precharge circuitry includes tie point and the second branch road, and the tie point and second branch road are simultaneously
Connection；
Second branch road includes total positive high voltage contactor S2；
The tie point includes the first pre-charge-relay S3, the first pre-charge resistance R3 and the first controllable precharge
Circuit submodule, the first pre-charge-relay S3, the controllable pre-charge circuit submodules of the first pre-charge resistance R3 and first
Block is connected；
The first controllable pre-charge circuit submodule includes the second pre-charge-relay S4 and the second pre-charge resistance
R4, the second pre-charge-relay S4 are in parallel with the second pre-charge resistance R4.
Further, the tie point also includes the second controllable pre-charge circuit submodule, the second controllable preliminary filling
Circuit submodule is connected with the described first controllable pre-charge circuit submodule, the second controllable pre-charge circuit submodule
One end is connected with the described first controllable pre-charge circuit submodule, the other end is connected with the first end of the load；
The second controllable pre-charge circuit submodule includes the 3rd pre-charge-relay S5 and the 3rd pre-charge resistance
R5, the 3rd pre-charge-relay S5 are in parallel with the 3rd pre-charge resistance R5.
Further, the battery system includes multiple cells, and the multiple cell is connected in series.
Further, the battery system also includes at least one service switch, at least one service switch series connection
Between multiple cells.
Further, the first pre-charge resistance R3, the second pre-charge resistance R4 and the 3rd precharge
Resistance R5 resistance is identical.
Further, the first pre-charge resistance R3, the second pre-charge resistance R4 and the 3rd precharge
Resistance R5 model is identical.
Further, the first pre-charge-relay S3, the second pre-charge-relay S4 and described 3rd pre-
Charge relay S5 model is identical.
Further, the first pre-charge-relay S3, the second pre-charge-relay S4 and described 3rd pre-
Charge relay S5 is monostable, single-pole double throw, normally opened type relay.
Another preferred embodiment of the present invention also provides a kind of pre-charge system, including load and above-mentioned preliminary filling Denso
Put, the pre-charging device includes battery system and precharge circuitry, the cathode output end of the battery system and institute
The first end connection of precharge circuitry is stated, the second end of the precharge circuitry connects with the first end of the load
Connect, the cathode output end of the battery system is connected by total negative high voltage contactor S1 with the second end of the load.
Another preferred embodiment of the present invention also provides a kind of pre-charge method, for loading into line precharge, application
In above-mentioned pre-charging device, methods described includes：
Total negative high voltage contactor S1 is closed, makes the cathode output end of the battery system and the second end of the load
Connection；
Measure the terminal voltage of the battery system and the terminal voltage of the load；
When the pressure difference between the terminal voltage of the battery system and the terminal voltage of the load is more than the first predetermined threshold value,
Close the first pre-charge-relay S3 and enter line precharge；
When the pressure difference between the terminal voltage of the battery system and the terminal voltage of the load be more than the second predetermined threshold value and
During less than or equal to the first predetermined threshold value, close the first pre-charge-relay S3 and the second pre-charge-relay S4 and carry out
Precharge；
When the pressure difference between the terminal voltage of the battery system and the terminal voltage of the load is less than or equal to the second default threshold
During value, close total positive high voltage contactor S2 and enter line precharge；
After the completion of precharge, the first pre-charge-relay S3, the second pre-charge-relay S4 are disconnected.
A kind of pre-charging device provided in an embodiment of the present invention, system and method, wherein, pre-charging device is by multiple power
Resistant series collectively form equivalent pre-charge resistance, have effectively shared power requirement of the system to single pre-charge resistance, have widened
The limitation of precharge power resistance type selecting.And using the topological structure of multiple resistant series, avoid because of single precharge
Caused direct-current high-voltage system current impact after resistive short failure, improve the high-voltage safety protection grade of system.Should
Pre-charging device uses multistage pre-charge circuit technology, pre-charge current size can be effectively controlled in pre-charge process, especially
The pre-charge current size in precharge later stage can be improved, so as to effectively shorten precharge time, lifts vehicle performance and user's body
Test.
To enable the above objects, features and advantages of the present invention to become apparent, present pre-ferred embodiments cited below particularly,
And accompanying drawing appended by coordinating, it is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the schematic block diagram for the pre-charging device that present pre-ferred embodiments provide.
Fig. 2 is the circuit diagram for the pre-charging device that present pre-ferred embodiments provide.
Fig. 3 is another circuit diagram for the pre-charging device that present pre-ferred embodiments provide.
Fig. 4 is the flow chart for the pre-charge method that present pre-ferred embodiments provide.
Fig. 5 is another flow chart for the pre-charge method that present pre-ferred embodiments provide.
Icon：10- pre-charging devices；110- battery systems；120- precharge circuitries；The first controllable precharge of 121-
Circuit submodule；The controllable pre-charge circuit submodules of 122- second；The total negative high voltage contactors of S1-；The total positive high voltage contactors of S2-；
The pre-charge-relays of S3- first；The pre-charge-relays of S4- second；The pre-charge-relays of S5- the 3rd；R3- first is pre-charged electricity
Resistance；The pre-charge resistances of R4- second；The pre-charge resistances of R5- the 3rd.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on embodiments of the invention, people in the art
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.In description of the invention
In, it is necessary to explanation, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that instruction or implying relative
Importance.
Below in conjunction with the accompanying drawings, some embodiments of the present invention are elaborated.It is following in the case where not conflicting
Feature in embodiment and embodiment can be mutually combined.
As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of pre-charging device 10, for loading into line precharge.
In the present embodiment, the load can be the high-voltage system load in vehicle, such as electric machine controller, dc-dc, air-conditioning
Compressor etc..In the present embodiment, can be a RC circuits by the load equivalent.The pre-charging device 10 includes battery system
110 and precharge circuitry 120.The cathode output end of wherein described battery system 110 and the precharge circuitry
120 first end connection, the second end of the precharge circuitry 120 and the cathode output end of the RC equivalent circuits connect
Connect, the cathode output end of the battery system 110 is exported by the negative pole of total negative high voltage contactor S1 and the RC equivalent circuits
End connection.
Alternatively, in the present embodiment, the battery system 110 includes single battery core set and service switch.Wherein, institute
Its topological structure of single battery core set is stated to be connected in series.Further, the single battery core set includes multiple cells,
Use and be connected in series successively between multiple cells.The service switch is Manual maintenance switch, wherein, the service switch
It can be one or more, and be connected between multiple cells.In the present embodiment, by the quantity of the service switch
One is arranged to, and the service switch is connected to the middle position of multiple cells, i.e., is divided equally multiple cells
To both sides.In the specific implementation, its voltage can be higher after multiple cell connections, and when being repaired, high voltage will
Threaten personal safety.Service switch is set in the centre position of multiple cells, then when being repaired, disconnection can be passed through
The service switch reduces the voltage at both ends with this to block multiple cells from centre position so that the voltage at both ends
Respectively it is reduced to the half of primary voltage, so improves safety coefficient during maintenance.
Alternatively, in the present embodiment, the RC equivalent circuits include equivalent load capacitance and equivalent load resistance, its
In, the equivalent load capacitance is connected in parallel with the equivalent load resistance.
In the present embodiment, the precharge circuitry 120 includes tie point and the second branch road, wherein described first
Branch road and second branch circuit parallel connection.Second branch road includes total positive high voltage contactor S2.The tie point includes first
Pre-charge-relay S3, the controllable pre-charge circuit submodules 121 of the first pre-charge resistance R3 and first.Wherein, described first
Pre-charge-relay S3, the controllable pre-charge circuit submodules 121 of the first pre-charge resistance R3 and first are connected.Described first can
Control pre-charge circuit submodule 121 includes the second pre-charge-relay S4 and the second pre-charge resistance R4, second preliminary filling
Electrical relay S4 is in parallel with the second pre-charge resistance R4.
Further, the cathode output end of battery system 110 and total positive high voltage in the precharge circuitry 120
Contactor S2 one end connection, in the cathode output end of the RC equivalent circuits and the precharge circuitry 120 it is total just
High voltage connector S2 other end connection.The cathode output end of the battery system 110 is with total negative high voltage contactor S1's
One end is connected, and the cathode output end of the RC equivalent circuits is connected with the other end of total negative high voltage contactor S1.
Specifically, one end of the first pre-charge-relay S3 be connected with the cathode output end of the battery system 110,
The other end is connected with one end of the first pre-charge resistance R3.The other end of the first pre-charge resistance R3 respectively with it is described
One of the second pre-charge-relay S4 and the second pre-charge resistance R4 included by first controllable pre-charge circuit submodule 121
End connection, the second pre-charge-relay S4 and the second pre-charge resistance R4 other end respectively with the equivalent RC circuit
Cathode output end connection.
Referring to Fig. 3, in addition to above-mentioned set-up mode, in the present embodiment, the tie point may also include second
Controllable pre-charge circuit submodule 122, the second controllable pre-charge circuit submodule 122 and the described first controllable precharge electricity
Way module 121 is connected, one end and the described first controllable pre-charge circuit of the second controllable pre-charge circuit submodule 122
Submodule 121 is connected, the other end is connected with the first end of the load.
The second controllable pre-charge circuit submodule 122 includes the precharge electricity of the 3rd pre-charge-relay S5 and the 3rd
R5 is hindered, the 3rd pre-charge-relay S5 is in parallel with the 3rd pre-charge resistance R5.Specifically, it is described 3rd precharge after
Electrical equipment S5 is connected with the described first controllable pre-charge circuit submodule 121 respectively with one end of the 3rd pre-charge resistance R5,
Cathode output end of the other end respectively with the equivalent RC circuit is connected.
In the present embodiment, wherein the precharge circuitry 120 may include 1~3 controllable pre-charge circuit submodule
Block, it is not specifically limited for the quantity of controllable pre-charge circuit submodule, can be configured according to actual conditions, had to reach
Effect reduces the purpose of the control complexity of precharge circuitry 120.
By above-mentioned setting, can by control the first pre-charge-relay S3, the second pre-charge-relay S4 and
3rd pre-charge-relay S5 assembled state dynamically adjusts equivalent pre-charge resistance size.The control signal of its repeat circuit
It is driven by the battery management system of vehicle.
In the specific implementation, total negative high voltage contactor S1 can be closed, makes cathode output end and the institute of battery system 110
The cathode output end connection of equivalent RC circuit is stated, then measures the terminal voltage of the battery system 110 and the equivalent RC circuit
Terminal voltage.When the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the equivalent RC circuit is more than first
During predetermined threshold value, then the first pre-charge-relay S3 is closed to enter line precharge.When the terminal voltage of the battery system 110
When pressure difference between the terminal voltage of the equivalent RC circuit is more than the second predetermined threshold value and is less than or equal to the first predetermined threshold value, then
Close the first pre-charge-relay S3 and the second pre-charge-relay S4 enters line precharge.In this way, it can then reduce
Charging resistor resistance is imitated, to increase charging current.
In the present embodiment, when the precharge circuitry 120 includes two controllable pre-charge circuit submodules, i.e.,
First controllable 121 and second controllable pre-charge circuit submodule 122 of pre-charge circuit submodule, then when the battery system
Pressure difference between 110 terminal voltage and the terminal voltage of the equivalent RC circuit is more than the 3rd predetermined threshold value and less than or equal to second
During predetermined threshold value, then the first pre-charge-relay S3, the second pre-charge-relay S4 and the 3rd precharge relay are closed
Device S5 is to enter line precharge.
And when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the equivalent RC circuit is less than or equal to
During three predetermined threshold values, then total positive high voltage contactor S2 is closed to enter line precharge.After precharge is completed, institute is disconnected
State the first pre-charge-relay S3, the second pre-charge-relay S4 and the 3rd pre-charge-relay S5.
, can be in pre-charge process by the above-mentioned multistage pre-charge circuit of use for loading into line precharge
Effectively control pre-charge current size, enable in particular to improve the pre-charge current size in precharge later stage, it is pre- so as to effectively shorten
Charging interval, to lift vehicle performance and Consumer's Experience.
Alternatively, the first pre-charge resistance R3, the second pre-charge resistance R4 and the 3rd pre-charge resistance R5 tool
Body resistance and model are unrestricted, such as the first pre-charge resistance R3, the second pre-charge resistance R4 and the 3rd preliminary filling
Resistance R5 resistance may be configured as difference, and different model, certainly, the first pre-charge resistance R3, second also can be selected in its model
Pre-charge resistance R4 and the 3rd pre-charge resistance R5 resistance and model also can be selected to be identical, not make in the present embodiment
Concrete restriction.
For the convenient instrument selection management for pre-charge resistance when implementing, in the present embodiment, first precharge
Resistance R3, the second pre-charge resistance R4 and the 3rd pre-charge resistance R5 resistance are from being similar resistance, and described first
Pre-charge resistance R3, the second pre-charge resistance R4 and the 3rd pre-charge resistance R5 model are also identical.
In addition, similarly, for the convenient instrument selection management to pre-charge-relay when implementing, in the present embodiment, institute
The first pre-charge-relay S3, the second pre-charge-relay S4 and the 3rd pre-charge-relay S5 model are stated from identical.
Alternatively, in the present embodiment, the first pre-charge-relay S3, the second pre-charge-relay S4 and the 3rd precharge after
Electrical equipment S5 is monostable, single-pole double throw, normally opened type relay.Certainly, the first pre-charge-relay S3, the second precharge relay
The other kinds of relay for different model also can be selected in device S4 and the 3rd pre-charge-relay S5, in the present embodiment not
Make concrete restriction, can be selected according to demand.
The embodiment of the present invention also provides a kind of pre-charge system, and the pre-charge system includes load and above-mentioned preliminary filling
Electric installation 10, the pre-charging device 10 include battery system 110 and precharge circuitry 120, the battery system 110
Cathode output end be connected with the first end of the precharge circuitry 120, the second end of the precharge circuitry 120
Be connected with the first end of the load, the cathode output end of the battery system 110 by total negative high voltage contactor S1 with it is described
The second end connection of load.
Incorporated by reference to Fig. 4, the embodiment of the present invention also provides a kind of pre-charge method, applied to above-mentioned pre-charging device 10,
For to loading into line precharge.It should be noted that the method shown in Fig. 4, is in the pre-charging device 10
Precharge circuitry 120 includes a controllable pre-charge circuit submodule (the i.e. first controllable pre-charge circuit submodule 121)
Setting under application process, the idiographic flow shown in Fig. 4 is illustrated below.
Step S101, close total negative high voltage contactor S1, make the cathode output end of the battery system 110 with it is described
The second end connection of load.
Step S102, measure the terminal voltage of the battery system 110 and the terminal voltage of the load.
Step S103, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load is more than the
During one predetermined threshold value, close the first pre-charge-relay S3 and enter line precharge.
Step S104, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load is more than the
Two predetermined threshold values and when being less than or equal to the first predetermined threshold value, close the first pre-charge-relay S3 and second precharge
Relay S4 enters line precharge.
Step S105, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load be less than etc.
When the second predetermined threshold value, close total positive high voltage contactor S2 and enter line precharge.
Step S106, after the completion of precharge, disconnect the first pre-charge-relay S3, second pre-charge-relay
S4。
Alternatively, referring to Fig. 5, another preferred embodiment of the present invention additionally provides a kind of pre-charge method, it is applied to
The pre-charging device 10 of the first controllable 121 and second controllable pre-charge circuit submodule 122 of pre-charge circuit submodule is included, can
Selection of land, methods described include：
Step S201, close total negative high voltage contactor S1, make the cathode output end of the battery system 110 with it is described
The second end connection of load.
Step S202, measure the terminal voltage of the battery system 110 and the terminal voltage of the load.
Step S203, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load is more than the
During one predetermined threshold value, close the first pre-charge-relay S3 and enter line precharge.
Step S204, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load is more than the
Two predetermined threshold values and when being less than or equal to the first predetermined threshold value, close the first pre-charge-relay S3 and second precharge
Relay S4 enters line precharge.
Step S205, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load is more than the
Three predetermined threshold values and when being less than or equal to the second predetermined threshold value, close the first pre-charge-relay S3, the second precharge relay
Device S4 and the 3rd pre-charge-relay S5 is to enter line precharge.
Step S206, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load be less than etc.
When three predetermined threshold values, close total positive high voltage contactor S2 and enter line precharge.
Step S207, after the completion of precharge, disconnect the first pre-charge-relay S3, second pre-charge-relay
S4 and the 3rd pre-charge-relay S5.
By the above-mentioned pre-charge method based on the pre-charging device 10, preliminary filling effectively can be controlled in pre-charge process
Electric size of current, can after precharging the phase improve pre-charge circuit size, to shorten precharge time, lift vehicle performance and use
Experience at family.
In summary, the embodiment of the present invention provides a kind of pre-charging device, system and method, pre- for being carried out to load
Charging.The pre-charging device 10 includes battery system 110 and precharge circuitry 120, and the precharge circuitry 120 includes
By the second branch road that always just high contactor is formed, and by the first pre-charge-relay S3, the first pre-charge resistance R3 and
The tie point that one controllable pre-charge circuit submodule 121 forms.Wherein, tie point and the second branch circuit parallel connection.First is controllable
Pre-charge circuit submodule 121 includes the second pre-charge-relay S4 and the second pre-charge resistance R4 being connected in parallel.
Pre-charging device 10 provided by the invention collectively forms equivalent pre-charge resistance by the series connection of multiple power resistors, effectively
Power requirement of the system to single pre-charge resistance has been shared, has widened the limitation of precharge power resistance type selecting.And use
The topological structure of multiple resistant series, direct-current high-voltage system electric current caused by avoiding after the single pre-charge resistance short-circuit failure
Shock problem, the high-voltage safety protection grade of system.The pre-charging device 10 uses multistage pre-charge circuit technology, can be pre-
Pre-charge current size is effectively controlled in charging process, the pre-charge current size in precharge later stage can be especially improved, so as to have
Effect shortens precharge time, lifts vehicle performance and Consumer's Experience.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Claims (10)
1. a kind of pre-charging device, for loading into line precharge, it is characterised in that the pre-charging device includes battery system
System and precharge circuitry, the first end of the cathode output end of the battery system and the precharge circuitry connect
Connect, the second end of the precharge circuitry is connected with the first end of the load, the cathode output end of the battery system
It is connected by total negative high voltage contactor S1 with the second end of the load；
The precharge circuitry includes tie point and the second branch road, the tie point and second branch circuit parallel connection；
Second branch road includes total positive high voltage contactor S2；
The tie point includes the first pre-charge-relay S3, the first pre-charge resistance R3 and the first controllable pre-charge circuit
Submodule, the first pre-charge-relay S3, the controllable pre-charge circuit submodule strings of the first pre-charge resistance R3 and first
Connection；
The first controllable pre-charge circuit submodule includes the second pre-charge-relay S4 and the second pre-charge resistance R4, institute
It is in parallel with the second pre-charge resistance R4 to state the second pre-charge-relay S4.
2. pre-charging device according to claim 1, it is characterised in that the tie point also includes the second controllable preliminary filling
Circuit submodule, the second controllable pre-charge circuit submodule are connected with the described first controllable pre-charge circuit submodule,
One end of the second controllable pre-charge circuit submodule is connected with the described first controllable pre-charge circuit submodule, the other end with
The first end connection of the load；
The second controllable pre-charge circuit submodule includes the 3rd pre-charge-relay S5 and the 3rd pre-charge resistance R5, institute
It is in parallel with the 3rd pre-charge resistance R5 to state the 3rd pre-charge-relay S5.
3. pre-charging device according to claim 1, it is characterised in that the battery system includes multiple cells,
The multiple cell is connected in series.
4. pre-charging device according to claim 3, it is characterised in that the battery system also includes at least one maintenance
Switch, at least one service switch are connected between multiple cells.
5. pre-charging device according to claim 2, it is characterised in that the first pre-charge resistance R3, described second
Pre-charge resistance R4 and the 3rd pre-charge resistance R5 resistance are identical.
6. pre-charging device according to claim 2, it is characterised in that the first pre-charge resistance R3, described second
Pre-charge resistance R4 and the 3rd pre-charge resistance R5 model are identical.
7. pre-charging device according to claim 2, it is characterised in that the first pre-charge-relay S3, described
Two pre-charge-relay S4 and the 3rd pre-charge-relay S5 model are identical.
8. pre-charging device according to claim 2, it is characterised in that the first pre-charge-relay S3, described
Two pre-charge-relay S4 and the 3rd pre-charge-relay S5 are monostable, single-pole double throw, normally opened type relay.
9. a kind of pre-charge system, it is characterised in that including the preliminary filling Denso described in load and claim 1-8 any one
Put, the pre-charging device includes battery system and precharge circuitry, the cathode output end of the battery system and institute
The first end connection of precharge circuitry is stated, the second end of the precharge circuitry connects with the first end of the load
Connect, the cathode output end of the battery system is connected by total negative high voltage contactor S1 with the second end of the load.
A kind of 10. pre-charge method, for loading into line precharge, it is characterised in that any one applied to claim 1-8
Pre-charging device described in, methods described include：
Total negative high voltage contactor S1 is closed, the cathode output end of the battery system is connected with the second end of the load
Connect；
Measure the terminal voltage of the battery system and the terminal voltage of the load；
When the pressure difference between the terminal voltage of the battery system and the terminal voltage of the load is more than the first predetermined threshold value, closure
The first pre-charge-relay S3 enters line precharge；
When the pressure difference between the terminal voltage of the battery system and the terminal voltage of the load is more than the second predetermined threshold value and is less than
During equal to the first predetermined threshold value, close the first pre-charge-relay S3 and the second pre-charge-relay S4 and carry out preliminary filling
Electricity；
When the pressure difference between the terminal voltage of the battery system and the terminal voltage of the load is less than or equal to the second predetermined threshold value,
Close total positive high voltage contactor S2 and enter line precharge；
After the completion of precharge, the first pre-charge-relay S3, the second pre-charge-relay S4 are disconnected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710894899.XA CN107571739A (en) | 2017-09-27 | 2017-09-27 | Pre-charging device, system and method |
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| CN201710894899.XA CN107571739A (en) | 2017-09-27 | 2017-09-27 | Pre-charging device, system and method |
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Cited By (8)
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| CN110492457A (en) * | 2019-06-26 | 2019-11-22 | 中电万维信息技术有限责任公司 | A kind of arc-suppressing method and arc-control device based on DC circuit |
| CN111193296A (en) * | 2018-11-15 | 2020-05-22 | 杭州海康机器人技术有限公司 | Pre-charging control device and method |
| CN111376730A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪股份有限公司 | Vehicle and power-on control device |
| CN111786439A (en) * | 2020-07-31 | 2020-10-16 | 中车青岛四方机车车辆股份有限公司 | Pre-charging circuit, charging system, pre-charging method and train |
| CN112615358A (en) * | 2020-12-22 | 2021-04-06 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Ship direct-current networking electric propulsion system and short-circuit fault rapid protection method |
| US11404894B2 (en) | 2019-01-23 | 2022-08-02 | Contemporary Amperex Technology Co., Limited | Pre-charging circuit and pre-charging method for high voltage battery pack |
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| CN111193296A (en) * | 2018-11-15 | 2020-05-22 | 杭州海康机器人技术有限公司 | Pre-charging control device and method |
| CN111193296B (en) * | 2018-11-15 | 2022-03-29 | 杭州海康机器人技术有限公司 | Pre-charging control device and method |
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| US11404894B2 (en) | 2019-01-23 | 2022-08-02 | Contemporary Amperex Technology Co., Limited | Pre-charging circuit and pre-charging method for high voltage battery pack |
| CN110492457A (en) * | 2019-06-26 | 2019-11-22 | 中电万维信息技术有限责任公司 | A kind of arc-suppressing method and arc-control device based on DC circuit |
| CN111786439A (en) * | 2020-07-31 | 2020-10-16 | 中车青岛四方机车车辆股份有限公司 | Pre-charging circuit, charging system, pre-charging method and train |
| CN112615358A (en) * | 2020-12-22 | 2021-04-06 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Ship direct-current networking electric propulsion system and short-circuit fault rapid protection method |
| WO2024089787A1 (en) * | 2022-10-26 | 2024-05-02 | 株式会社オートネットワーク技術研究所 | On-vehicle power supply device |
| GB2624695A (en) * | 2022-11-18 | 2024-05-29 | Nested Loop Ltd | An electrical switching circuit and method of connecting a DC voltage source to a power load |
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