Summary of the invention
In view of this, can be effectively shortened the purpose of the present invention is to provide a kind of method for charging batteries, apparatus and system
The time used to battery charging, and then improve the charge efficiency of battery.
In a first aspect, this method is applied to high pressure allocation component the embodiment of the invention provides a kind of method for charging batteries,
Wherein, high pressure allocation component is connected with battery management system;High pressure allocation component is also connected with battery to be charged, sets in battery
The battery modules of multiple parallel connections are equipped with, high pressure allocation component is used to switch the connection type between battery modules;Above method packet
It includes: receiving the switching signal that battery management system is sent;Battery modules are switched to by parallel connection mode based on switching signal
Serial connection mode;The mould group fast charge signal that battery management system is sent is received, to charge the battery by external power;Mould group
Fast charge signal includes the negative closure signal of fast charge and the positive closure signal of fast charge.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein on
State the step of battery modules are switched to by parallel connection mode by serial connection mode based on switching signal, comprising: based on switching
Signal controls the switching relay closure in high pressure allocation component, by make battery module by parallel connection in a manner of be switched to and serially connect
Connect mode.
With reference to first aspect, the embodiment of the invention provides second of possible embodiments of first aspect, wherein on
It states and receives battery management system sending module fast charge signal, with the step of by external power to battery charging, comprising: connect
Battery management system sending module fast charge signal is received, is connected to based on mould group fast charge signal with external power, so that external power passes
Defeated charging current is transmitted to each battery modules, charges to each battery modules.
The possible embodiment of second with reference to first aspect, the embodiment of the invention provides the third of first aspect
Possible embodiment, wherein above-mentioned reception battery management system sending module fast charge signal is based on mould group fast charge signal and institute
State external power connection so that external power transmission charging current be transmitted to each battery modules, to each battery modules into
The step of row charging, comprising: after battery modules are switched to serial connection mode by parallel connection mode, receive the cell tube
The negative closure signal of fast charge that reason system is sent, based on the negative relay of fast charge in the negative closure signal control high pressure allocation component of fast charge
Closure;After the negative relay of fast charge in high pressure allocation component is closed, receives the fast charge that battery management system is sent and be just closed letter
Number, based on the positive relay closure of fast charge in the positive closure signal control high pressure allocation component of fast charge, so that peripheral hardware charge power supply passes
Defeated charging current is transmitted to each battery modules, charges to each battery modules.
With reference to first aspect, the embodiment of the invention provides the 4th kind of possible embodiments of first aspect, wherein on
State method further include: the battery discharge signal that battery management system is sent is received, to discharge by battery to vehicle;Battery discharge
Signal includes main negative closure signal and main positive closure signal.
The 4th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 5th kind of first aspect
Possible embodiment, wherein the battery discharge signal that above-mentioned reception battery management system is sent, to be put by battery to vehicle
The step of electricity, comprising: receive the negative closure signal of master that battery management system is sent;Based on the negative closure signal control high pressure distribution of master
The negative relay closure of master in component;Receive the positive closure signal of master that battery management system is sent;Based on the positive closure signal control of master
The positive relay closure of master in high pressure allocation component processed, so that the discharge current of each battery modules is transmitted to vehicle, puts vehicle
Electricity.
Second aspect, the embodiment of the present invention also provide a kind of battery charger, and device is applied to high pressure allocation component,
In, high pressure allocation component is connected with battery management system;High pressure allocation component is also connected with battery to be charged, setting in battery
There are the battery modules of multiple parallel connections, high pressure allocation component is used to switch the connection type between battery modules;Device includes:
Switching signal receiving module sends switching signal for receiving battery management system;
Switching module, for battery modules to be switched to serial connection mode by parallel connection mode based on switching signal;
Fast charge signal receiving module, for receiving battery management system sending module fast charge signal, to pass through external power
It charges the battery;Mould group fast charge signal includes the negative closure signal of fast charge and the positive closure signal of fast charge.
In conjunction with second aspect, the embodiment of the invention provides the first possible embodiments of second aspect, wherein on
It states switching module to be also used to: based on the switching relay closure in switching signal control high pressure allocation component, so that battery module
Serial connection mode is switched to by parallel connection mode.
In conjunction with second aspect, the embodiment of the invention provides second of possible embodiments of second aspect, wherein on
It states fast charge signal receiving module to be also used to: receiving battery management system sending module fast charge signal, be based on fast charge signal and peripheral hardware
Power supply connection charges to each battery modules so that the charging current of external power transmission is transmitted to each battery modules.
The third aspect, the embodiment of the present invention also provide a kind of batter-charghing system, including high pressure allocation component, and with height
The battery management system and battery to be charged that pressure allocation component is respectively connected with;Wherein, battery management system is used for high pressure point
Distribution assembly sends control signal;The battery modules of multiple parallel connections are provided in battery to be charged;High pressure allocation component is for holding
The 5th kind of possible described in any item methods of embodiment of row such as first aspect to first aspect.
The embodiment of the present invention bring it is following the utility model has the advantages that
A kind of method for charging batteries provided in an embodiment of the present invention, apparatus and system, are executed by high pressure allocation component,
In, high pressure allocation component is connected with battery management system, and high pressure allocation component is also connected with battery, is provided with again in battery multiple
Battery modules in parallel, when receiving the switching signal of battery management system transmission, according to the switching signal by battery modules
Between connection type be switched to serial connection by being connected in parallel, then receive battery management system transmission mould group fast charge signal,
So that external power charges the battery.The embodiment of the present invention can be preceding by the connection side between each battery modules to battery charging
Formula is switched to serial connection by being connected in parallel, under charging current unanimous circumstances, due to being applied to electricity under serial connection mode
Total charging voltage on pond is the sum of the charging voltage being applied in each battery modules, that is, the total charging electricity being applied on battery
Pressure improves, and charge power also increases accordingly, therefore can effectively shorten charging time of battery, and then improves the charging effect of battery
Rate.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claims
And specifically noted structure is achieved and obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Currently, when charging to the battery system of new-energy automobile, due to the high-pressure insert in charging circuit, high-voltage relay
The limitation of the electrical components such as device and high-voltage conducting wires, so that charging circuit can not transmit higher charging current, in addition, due to all kinds of
The charging current of peripheral hardware charge power supply transmission is limited, causes the charging time of battery system not reduce further, Jin Erwu
Method effectively improves the charge efficiency of battery system, is based on this, a kind of method for charging batteries provided in an embodiment of the present invention, device and
System can effectively shorten to the time used in battery system charging, and then improve the charge efficiency of battery system.
For convenient for understanding the present embodiment, first to a kind of method for charging batteries disclosed in the embodiment of the present invention into
Row is discussed in detail, wherein and this method is applied to high pressure allocation component, further, high pressure allocation component and BMS (Battery
Management System, battery management system are connected;High pressure allocation component is also connected with battery to be charged, sets in battery
The battery modules of multiple parallel connections are equipped with, high pressure allocation component is also used to switch the connection type between each battery modules, connection side
Formula includes parallel connection and serial connection.Battery modules can be by multiple battery cells by string and mode is connected and formed.
A kind of flow chart of method for charging batteries shown in Figure 1, method includes the following steps:
Step S102 receives the switching signal that the battery management system is sent.
Based on charging security consideration, because high pressure allocation component (that is, high pressure allocation unit) is for switching each battery mould
Connection type between group, and for transmitting electric current between battery modules and peripheral hardware charge power supply, so when BMS system receives
When to battery charging instruction, component state included in high pressure allocation component should be detected first, to judge high pressure
All components in allocation component are without exception and if only if components all in high pressure allocation component with the presence or absence of exception
When, just start to charge the battery.Specifically, judging that content may include each relay for being included in high pressure allocation component
Whether it is in without instruction off-state, if each relay is in off-state, then it represents that high pressure allocation component fault-free.
After confirming that high pressure allocation component is without exception, high pressure allocation component receives the switching signal that BMS is sent, wherein cuts
It is corresponding with the switching relay in high pressure allocation component to change signal.
Battery modules are switched to serial connection mode by parallel connection mode based on switching signal by step S104.
After receiving switching signal, according to the switching signal control switching relay closure, by each battery modules it
Between connection type switch to serial connection by being connected in parallel.
It should be understood that being applied to always filling on battery when the connection type between each battery modules is serial connection
Piezoelectric voltage is the sum of the charging voltage being applied in each battery modules, according to the relationship of power, electric current and voltage, i.e. power etc.
In the product of electric current and voltage, it is known that charging current always in the case where, charging voltage increase, charge power also with
Increase, and then can achieve reduce the charging time purpose.
Step S106 receives the mould group fast charge signal that battery management system is sent, to charge the battery by external power.
It, can be by high pressure allocation component and peripheral hardware after the connection type between each battery modules is switched to serial connection
It is connected between charge power supply, specifically, the mould group fast charge signal that battery management system is sent is received, by filling for external power transmission
Electric current is transmitted to each battery modules, charges to each battery modules, charges the battery to realize.
A kind of method for charging batteries provided in an embodiment of the present invention, is executed by high pressure allocation component, wherein high pressure distribution group
Part is connected with battery management system, and high pressure allocation component is also connected with battery, is provided with the battery mould of multiple parallel connections in battery again
Group, when receiving the switching signal of battery management system transmission, according to the switching signal by the connection side between battery modules
Formula is switched to serial connection by being connected in parallel, then receives the mould group fast charge signal of battery management system transmission, so that external power
It charges the battery.The embodiment of the present invention can to battery charging before by the connection type between each battery modules by being connected in parallel
It is switched to serial connection, under charging current unanimous circumstances, due to the total charging being applied on battery under serial connection mode
Voltage is the sum of the charging voltage being applied in each battery modules, that is, the total charging voltage being applied on battery improves, charging
Power also increases accordingly, therefore can effectively shorten charging time of battery, and then improves the charge efficiency of battery.
It is well known that when the electric current of circuit transmission is larger, in circuit conducting wire and electrical component will cause
A degree of loss.The present invention because connection type when charging to battery between each battery modules is serial connection,
The total charging voltage being applied on battery is the sum of the charging voltage being applied in each battery modules, and because power is equal to electricity
The product of pressure and electric current, so charging current when charging circuit transmits is smaller, so this hair when charge power is consistent
The method that bright embodiment provides, can also be effectively relieved loss of the charging current to charging circuit.
For the ease of understanding above-described embodiment, the embodiment of the invention also provides another method for charging batteries,
By taking battery modules are two as an example, the flow chart of another method for charging batteries referring to fig. 2, this method includes following step
It is rapid:
Step S202 receives the switching signal that battery management system is sent.
High pressure allocation unit (that is, high pressure allocation component) is separately connected with module system 1 and module system 2, wherein mould
Group system is aforementioned battery modules, the connection schematic diagram of high pressure allocation unit as shown in Figure 3 and module system, high pressure distribution
Include multiple relays in unit, may include preliminary filling relay K1, lead positive relay K2, the positive relay K3 of fast charge, lead and bear
Relay K4, the switching of super-pressure fast charge relay (that is, switching relay) K5, main positive relay K6, preliminary filling relay K7 and
The negative relay K9 of fast charge.
It before charging the battery, needs to detect above-mentioned all relays, judges that above-mentioned all relays are
It is no to be in an off state, and then learn whether high pressure allocation unit is abnormal.After confirming that each relay is without exception, cell tube is received
The switching command that reason system is sent.
Step S204, based on the switching relay closure in switching signal control high pressure allocation component, so that battery module
Serial connection mode is switched to by parallel connection mode.
Based on switching signal control super-pressure fast charge switching relay K5 closure, to make module system 1 and module system 2
Between connection type be switched to serial connection by being connected in parallel.
Step S206 receives battery management system sending module fast charge signal, is connected to based on fast charge signal with external power,
So that the charging current of external power transmission is transmitted to each battery modules, charge to each battery modules.
The embodiment of the present invention furthermore presents the process to charge by external power to battery:
(1) it after battery modules are switched to serial connection mode by parallel connection mode, receives battery management system and sends
The negative closure signal of fast charge, based on the negative relay closure of fast charge in fast charge negative closure signal control high pressure allocation component.
In view of the safety problem that charges, negative power supply should be first connected, so when super-pressure fast charge switching relay K5 is closed
After conjunction, it is based on the negative closure signal of fast charge, makes the negative relay K9 closure of above-mentioned fast charge, is connected to the negative interface of fast charge.
(2) after the negative relay of fast charge in high pressure allocation component is closed, the fast charge of battery management system transmission is being received just
Closure signal, based on the positive relay closure of fast charge in the positive closure signal control high pressure allocation component of fast charge, so that peripheral hardware charges
The charging current of power delivery is transmitted to each battery modules, charges to each battery modules.
After above-mentioned fast charge negative relay K9 closure, it is based on the positive closure signal of fast charge, makes the positive relay K3 closure of fast charge, even
It is connected to the positive interface of fast charge, forms fast charge circuit, and transmit the charging current of the transmission of peripheral hardware charge power supply by fast charge circuit
To each module system, the fast charge of complete battery pair.Specifically, charge circuit includes the positive interface of sequentially connected fast charge, fast charge
Positive relay K3, module system 1, super-pressure fast charge switching relay K5, module system 2, the negative relay K9 of fast charge and fast charge are negative
Interface.
Method provided in an embodiment of the present invention will be between each module system after confirmation high pressure allocation unit is without exception
Connection type is switched to serial connection mode, then successively control relay closure, fast charge circuit is formed, to realize to battery
Quick charge.The embodiment of the present invention is under charging current unanimous circumstances, since the charging voltage of the embodiment of the present invention is common
Twice of the charge power for being higher than and commonly charging can be obtained in twice of charging voltage, and then charge efficiency is made to be common charging effect
Twice of rate.In addition, charge power always in the case where, due to the charging current of the embodiment of the present invention be the prior art charging
The half of electric current so that charging current reduces the loss of charging circuit, while can also be reduced to high-pressure insert, high-voltage conducting wires
With the specification requirement of high-voltage relay.
When being stored with electricity in battery, can be discharged by the battery to vehicle, with high pressure allocation unit shown in Fig. 3
For the connection type of module system, the embodiment of the invention also provides another method for charging batteries, this method is to receive
The battery discharge signal that battery management system is sent, with the process discharged by battery to vehicle.
In view of also needing to consider electric discharge safety problem to vehicle electric discharge, it is therefore desirable to detect in high pressure allocation unit
Whether each relay is without exception.After confirming that each relay is without exception, it can discharge vehicle.Specifically, receiving battery management
The negative closure signal of master that system is sent, based on the negative relay closure of master in the negative closure signal control high pressure allocation component of master;So
The positive closure signal of master that battery management system is sent is received afterwards, and based on the master in the positive closure signal control high pressure allocation component of master
Positive relay closure is discharged by battery modules to vehicle so that the discharge current of each battery modules is transmitted to vehicle.
Preferably as the discharge current of battery conveying is excessively high, high pressure allocation unit and vehicle may be damaged,
So first carrying out preliminary filling to vehicle after confirmation high pressure allocation unit is without exception.Be primarily based on main negative closure signal, make it is main it is negative after
Electric appliance K4 and main negative relay K8 closure, are connected to the negative interface of vehicle high pressure, then control preliminary filling relay K1 and preliminary filling relay
Device K7 closure, is connected to the high positive pressure interface of vehicle, carries out preliminary filling to vehicle by module system 1 and module system 2.Wherein, to
The pre-charging time of vehicle can be 200ms.
When the difference of the high positive pressure interface voltage of vehicle and the high positive pressure interface voltage of vehicle is less than 10V, can stop pre-
It fills, and is discharged by battery module to vehicle, disconnected specifically, controlling preliminary filling relay K1 and preliminary filling relay K7 first, so
The positive closure signal of master that battery management system is sent is received afterwards, and based on the master in the positive closure signal control high pressure allocation component of master
Positive relay closure discharges to vehicle by battery modules so that the discharge current of each battery modules is transmitted to the vehicle.?
I.e. after above-mentioned preliminary filling relay K1 and preliminary filling relay K7 is disconnected, main positive relay K2 can be controlled and main positive relay K6 is closed
It closes, makes to lead positive relay K2 and main positive relay K6 is connected to the high positive pressure interface of vehicle, form battery discharge circuit, and pass through electricity
The discharge current that each module system transmits is transmitted to vehicle by tank discharge circuit.When discharging to vehicle, because super-pressure is fast
It fills switching relay K5 to be in an off state, so module system 1 and module system 2 are connected in parallel.
In conclusion switch the connection type between each module system by high pressure allocation unit, when module system simultaneously
When row connection, it can be discharged by battery to vehicle, common current can also be transmitted to battery, as common charging;When mould group
When system is connected in series, the charging time of battery can be shortened by peripheral hardware charge power supply to quickly charging battery, and then improved
The charge efficiency of battery.
For the method for charging batteries that previous embodiment provides, the embodiment of the invention also provides a kind of chargings of battery to fill
It sets, which is applied to high pressure allocation component, wherein high pressure allocation component is connected with battery management system;High pressure allocation component
Also it is connected with battery to be charged, the battery modules of multiple parallel connections is provided in battery, high pressure allocation component is for switching battery
Connection type between mould group;A kind of structural schematic diagram of method for charging batteries shown in Figure 4, the device include with lower part
Point:
Switching signal receiving module 402 sends switching signal for receiving battery management system.
Switching module 404 is serially connected for being switched to the battery modules by parallel connection mode based on switching signal
Connect mode.
Fast charge signal receiving module 406, for receiving battery management system sending module fast charge signal, to pass through peripheral hardware electricity
It charges to the battery in source.
A kind of battery charger provided in an embodiment of the present invention is applied to high pressure allocation component, when switching signal receives mould
When block receives the switching signal of battery management system transmission, switching module is according to the switching signal by the company between battery modules
It connects mode and is switched to serial connection by being connected in parallel, then the mould group that battery management system is sent is received by fast charge signal receiving module
Fast charge signal, so that external power charges the battery.The embodiment of the present invention can to battery charging before by each battery modules it
Between connection type be switched to serial connection by being connected in parallel, under charging current unanimous circumstances, due to be connected in series mode
Under total charging voltage for being applied on battery be the sum of the charging voltage being applied in each battery modules, that is, be applied on battery
Total charging voltage improve, charge power also increases accordingly, therefore can effectively shorten charging time of battery, and then improves electricity
The charge efficiency in pond.
Further, switching module is stated to be also used to close based on the switching relay in switching signal control high pressure allocation component
Close, by make battery module by parallel connection in a manner of be switched to serial connection mode.,
Further, above-mentioned fast charge signal receiving module is also used to: battery management system sending module fast charge signal is received,
It is connected to based on fast charge signal with external power, so that the charging current of external power transmission is transmitted to each battery modules, to each electricity
Chi Mo group charges.
The technical effect and preceding method embodiment phase of device provided by the embodiment of the present invention, realization principle and generation
Together, to briefly describe, Installation practice part does not refer to place, can refer to corresponding contents in preceding method embodiment.
The embodiment of the invention also provides a kind of batter-charghing system, a kind of batter-charghing system shown in Figure 5
Structural schematic diagram, the system include high pressure allocation component 500, and the battery management being respectively connected with high pressure allocation component 500
System 502 and battery 504 to be charged.Wherein, battery management system 502 is used to send control signal to high pressure allocation component,
The battery modules of multiple parallel connections are provided in battery 504 to be charged, high pressure allocation component 500 is for executing above-described embodiment institute
The method of offer.
Batter-charghing system provided in an embodiment of the present invention receives cutting for battery management system transmission by high pressure allocation component
Signal is changed, the connection type between each battery modules in battery to be charged is switched to serial connection by being connected in parallel,
Under charging current unanimous circumstances, since the total charging voltage being applied on battery under serial connection mode is to be applied to each electricity
The sum of charging voltage in Chi Mo group, that is, the total charging voltage being applied on battery improve, and charge power also increases accordingly, therefore
It can effectively shorten charging time of battery, and then improve the charge efficiency of battery.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
Specific work process, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features;And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.