CN208290995U - Power battery pack, power battery pack charging system and electric car - Google Patents
Power battery pack, power battery pack charging system and electric car Download PDFInfo
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- CN208290995U CN208290995U CN201820447687.7U CN201820447687U CN208290995U CN 208290995 U CN208290995 U CN 208290995U CN 201820447687 U CN201820447687 U CN 201820447687U CN 208290995 U CN208290995 U CN 208290995U
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Abstract
This disclosure relates to which a kind of power battery pack, power battery pack charging system and electric car, belong to electric car field, the DC charging for carrying the electric car of high electrokinetic cell system can be realized.The power battery pack includes switching device, direct current fills plus end, direct current fills negative terminal and at least two concatenated sub- battery modules, and any one or any number of adjacent sub- battery modules and the direct current are filled plus end during the power battery pack DC charging for the switching device and the direct current fills negative terminal and is electrically connected and forms connected loop.
Description
Technical field
This disclosure relates to electric car field, and in particular, to a kind of power battery pack, power battery pack charging system and
Electric car.
Background technique
Currently, the mainstream voltage of power battery pack is usually located between 300V-400V.However, in order to improve pure electric vehicle vapour
The course continuation mileage of vehicle, it is advantageous for improving the voltage of power battery pack, for example, the voltage of power battery pack is increased to
500V or more.
But the voltage output section of direct-current charging post at present on the market is generally 200V-500V, so that carrying high dynamic
The electric car of power battery system (for example, voltage is higher than 500V) is faced with the awkward circumstances that can not carry out DC charging.
Utility model content
Purpose of this disclosure is to provide a kind of power battery pack, power battery pack charging system and electric car, Neng Goushi
Now carry the DC charging of the electric car of high electrokinetic cell system.
To achieve the goals above, the disclosure provides a kind of power battery pack, which includes switching device, straight
Stream fills plus end, direct current fills negative terminal and at least two concatenated sub- battery modules, and the switching device is in the power battery
During packet DC charging by any one or any number of adjacent sub- battery modules and the direct current fill plus end and
The direct current fills negative terminal electrical connection to form connected loop.
Optionally, the switching device includes the first single pole multiple throw and the second single pole multiple throw, in which:
The movable contact of first single pole multiple throw fills plus end with the direct current and is electrically connected, and first hilted broadsword is thrown more
The stationary contact of switch is electrically connected with the anode of described at least two concatenated sub- battery modules correspondingly respectively；
The movable contact of second single pole multiple throw fills negative terminal with the direct current and is electrically connected, and second hilted broadsword is thrown more
The stationary contact of switch is electrically connected with the cathode of described at least two concatenated sub- battery modules correspondingly respectively.
Optionally, which further includes at least one of service switch, current sensor and device for fusing,
In:
The service switch is connected electrically between the adjacent sub- battery module of any two；
The current sensor is connected electrically in the movable contact of first single pole multiple throw and the direct current fills plus end
Between, or it is connected electrically in the movable contact of second single pole multiple throw and the direct current fills between negative terminal；
The device for fusing is connected electrically in the movable contact of first single pole multiple throw and the direct current fill plus end it
Between, or it is connected electrically in the movable contact of second single pole multiple throw and the direct current fills between negative terminal.
Optionally, the switching device includes multiple relays, in which: each sub- battery module anode with it is described
Direct current fills between plus end and the cathode of each sub- battery module and the direct current fill and pass through tool between negative terminal respectively
There is the conducting wire electrical connection of one of them corresponding relay.
Optionally, which further includes at least one of service switch, current sensor and device for fusing,
In:
The service switch is connected electrically between the adjacent sub- battery module of any two；
The current sensor be connected in series in each sub- battery module anode with the direct current fill plus end it
Between conducting wire on, or be connected in series in the cathode of each sub- battery module and the direct current fills conducting wire between negative terminal
On；
The positive and direct current that the device for fusing is connected in series in each sub- battery module fills between plus end
Conducting wire on, or be connected in series in the cathode of each sub- battery module and the direct current fills conducting wire between negative terminal
On.
Optionally, the sub- battery module includes that any one or any number of series connection and/or parallel connection are electrically connected
Battery modules.
The disclosure also provides a kind of power battery pack charging system, which includes:
Power battery pack described above according to the disclosure；And
Battery management system, for controlling the switching device in the power battery pack for appointing in the power battery pack
Direct current in meaning one or any number of adjacent sub- battery modules and the power battery pack fills plus end and direct current fills negative terminal
Son electrical connection is to form connected loop.
The disclosure also provides a kind of electric car, which includes the power battery described above according to the disclosure
Packet charging system.
Through the above technical solutions, since power battery pack has been divided into multiple sub- battery modules, every height electricity
The voltage of pond module is to be greatly reduced for the global voltage of power battery pack, and in the direct current of power battery pack
Any one or any number of adjacent sub- battery modules in charging process by switching device and direct current fill plus end and
Direct current fills negative terminal electrical connection to form connected loop, therefore can compare power battery using DC output voltage (such as 300V)
The low direct-current charging post of the rated direct voltage (being greater than 500V) of packet carries out DC charging to high voltage power battery pack, this
The vehicle adaptability of pure electric automobile is not only increased, and reduces and the DC output voltage section of direct-current charging post is wanted
It asks.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 shows the schematic block diagram of the power battery pack according to the first embodiment of the present disclosure.
Fig. 2 shows the another schematic block diagrams according to the power battery pack of the first embodiment of the present disclosure.
Fig. 3 shows another schematic block diagram of the power battery pack according to the first embodiment of the present disclosure.
Fig. 4 shows the another schematic block diagram of the power battery pack according to the first embodiment of the present disclosure.
Fig. 5 shows the another schematic block diagram of the power battery pack according to the first embodiment of the present disclosure.
Fig. 6 shows another schematic block diagram of the power battery pack according to the first embodiment of the present disclosure.
Fig. 7 shows the another schematic block diagram of the power battery pack according to the first embodiment of the present disclosure.
Fig. 8 shows another schematic block diagram of the power battery pack according to the first embodiment of the present disclosure.
Fig. 9 shows the schematic block diagram of the power battery pack charging system according to the second embodiment of the present disclosure.
Figure 10 is the another schematic block diagram according to the power battery pack charging system of the second embodiment of the present disclosure.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
According to first embodiment of the present disclosure, a kind of power battery pack is provided.As shown in Figure 1, the power battery pack 1 can be with
Plus end 30 is filled including switching device 20, direct current, direct current fills negative terminal 40 and at least two concatenated sub- battery modules 10, described
Switching device 20 is during 1 DC charging of power battery pack by any one or any number of adjacent sub- batteries
Module 10 and the direct current fill plus end 30 and the direct current fills negative terminal 40 and is electrically connected to form connected loop.
Wherein, every sub- battery module 10 may include that any one or any number of series connection and/or parallel connection are connected electrically in
Battery modules together.The quantity of single battery included in each battery modules can be identical, can not also be identical.It is preferred that
Ground, every sub- battery module include the series connection and/or the battery modules in parallel being electrically connected of identical quantity, each battery mould
Group also includes the single battery of identical quantity, so that the DC charging control strategy of power battery pack 1 is more simple.
Through the above technical solutions, since power battery pack 1 has been divided into multiple sub- battery modules, every height electricity
The voltage of pond module is to be greatly reduced for the global voltage of power battery pack 1, and in the straight of power battery pack 1
It is that any one or any number of adjacent sub- battery modules by switching device 20 fill anode with direct current during current charge
Son and direct current fill negative terminal electrical connection to form connected loop, therefore can compare power using DC output voltage (such as 300V)
The low direct-current charging post of the rated direct voltage (being greater than 500V) of battery pack 1 carries out direct current to high voltage power battery pack 1
Charging, this not only increases the vehicle adaptability of pure electric automobile, and reduces the DC output voltage to direct-current charging post
The requirement in section.
Fig. 2 shows the another schematic block diagrams according to the power battery pack 1 of the first embodiment of the present disclosure.As shown in Fig. 2, institute
Stating switching device 20 includes the first single pole multiple throw 220 and the second single pole multiple throw 230, in which: first hilted broadsword is more
The movable contact D of throw switch 220 fills plus end 30 with the direct current and is electrically connected, the stationary contact of first single pole multiple throw 220
J1~Jn is electrically connected with the anode of described at least two concatenated sub- battery modules 10 correspondingly respectively；Second hilted broadsword
The movable contact D of multithrow switch 230 fills negative terminal 40 with the direct current and is electrically connected, the stationary contact of second single pole multiple throw 230
Point J1~Jn is electrically connected with the cathode of described at least two concatenated sub- battery modules 10 correspondingly respectively.
Fig. 3 shows a specific implementation of power battery pack 1 shown in Fig. 2.As shown in figure 3, at least two strings
The sub- battery module of connection includes the concatenated first sub- battery module 101With the second sub- battery module 102And the first sub- battery
Module 101Cathode and the second sub- battery module 102Anode electrical connection, the first single pole multiple throw 220 and the second hilted broadsword are thrown more
Switch 230 is single-pole double-throw switch (SPDT), in which: the movable contact D and the direct current of first single pole multiple throw 220 fill anode
Son 30 is electrically connected, the stationary contact J1 of first single pole multiple throw 220 and the described first sub- battery module 101Anode be electrically connected
It connects, the stationary contact J2 of first single pole multiple throw 220 and the described second sub- battery module 102Anode electrical connection；It is described
The movable contact 3 of second single pole multiple throw 230 fills negative terminal 40 with the direct current and is electrically connected, second single pole multiple throw
230 stationary contact J1 and the described first sub- battery module 101Cathode electrical connection, second single pole multiple throw 230 it is quiet
Contact J2 and the described second sub- battery module 102Cathode electrical connection.In this way, it is possible to realize the first sub- battery module 101With
Two sub- battery modules 102Successively individually charging or charge simultaneously.
For example, the stationary contact J1 for working as the first single pole multiple throw 220 is electrically connected with movable contact D, the second single pole multiple throw
When 230 movable contact D is electrically connected with stationary contact J1, the first sub- battery module 10 can be individually given1Charging；Then, the first hilted broadsword
The stationary contact J2 of multithrow switch 220 is electrically connected with movable contact D, the movable contact D of the second single pole multiple throw 230 and stationary contact J2 are electric
Connection, can individually give the second sub- battery module 102Charging.In this way, during 1 DC charging of power battery pack, energy
It is enough to pass through successively to the first sub- battery module 101DC charging is carried out with the second sub- battery module, it is right to reduce power battery pack 1
The requirement of direct-current charging post DC output voltage also can be greater than or equal to the first sub- battery module with DC output voltage
101With the second sub- battery module 102Voltage rating but be less than the direct-current charging post of voltage rating of entire power battery pack 1 and be
Power battery pack 1 carries out DC charging.
Certainly, if the DC output voltage of direct-current charging post meets the voltage rating demand of entire power battery pack 1,
Can by the way that the movable contact D of the first single pole multiple throw 220 is electrically connected with stationary contact J1, by the second single pole multiple throw 230
Movable contact D be electrically connected with stationary contact J2 as the first sub- battery module 101With the second sub- battery module 102DC charging simultaneously,
Save the charging time.
Fig. 4 shows the another schematic block diagram of the power battery pack 1 according to the first embodiment of the present disclosure.It is shown in Fig. 4 dynamic
Service switch 50, current sensor 60 and fusing dress are increased on the basis of the power battery pack 1 shown in Fig. 2 of power battery pack 1
At least one of 70 are set, wherein including service switch 50, current sensor 60 Fig. 4 schematically shows power battery pack 1
With this three of device for fusing 70.
The service switch 50 is connected electrically between the adjacent sub- battery module of any two, for realizing the power electric
The maintenance of pond packet 1.Moreover, the position by so arranging service switch 50, can be realized the sub- battery mould in power battery pack 1
The branch of block point maintenance.
The current sensor 60 is connected electrically in the movable contact D of first single pole multiple throw 220 and the direct current fills
Between plus end 30, or it is connected electrically in the movable contact D of second single pole multiple throw 230 and the direct current fills negative terminal 40
Between, for detecting DC charging current during each sub- battery module DC charging.Fig. 4 schematically shows electric currents
Sensor 60 is electrically connected the movable contact D of first single pole multiple throw 220 and the direct current fills between plus end 30.By such as
The position of this arrangement current sensor 60 can be filled carrying out direct current to any one or any number of adjacent sub- battery modules
In the case where electricity, DC charging current can be detected.
The device for fusing 70 is connected electrically in the movable contact D of first single pole multiple throw 220 and the direct current fills just
Between terminal 30, or be connected electrically in the movable contact D of second single pole multiple throw 230 and the direct current fill negative terminal 40 it
Between, for occurring unsafe condition during 1 DC charging of power battery pack (for example, 1 temperature overheating of power battery pack
Deng) when fuse to disconnect corresponding sub- battery module and direct current fills plus end 30 and direct current fills connected loop between negative terminal 40.
The movable contact D of the first single pole multiple throw 220 is connected electrically in Fig. 4 schematically shows device for fusing 70 and the direct current fills just
Between terminal 30.It, can be to any one or any number of adjacent son electricity by so arranging the position of device for fusing 70
In the case that pond module carries out DC charging, unsafe condition can occur during 1 DC charging of power battery pack
When fuse to disconnect corresponding sub- battery module and direct current fills plus end 30 and direct current fills connected loop between negative terminal 40.
Fig. 5 shows the another schematic block diagram of the power battery pack 1 according to the first embodiment of the present disclosure.As shown in figure 5, dynamic
Power battery pack 1 includes n concatenated sub- battery modules 101~10n, direct current fills plus end 30, direct current fills negative terminal 40 and switching
Device 20, wherein switching device 20 includes multiple relays 201Positive 1~201Positive nWith 202Minus 1~202Negative n, and each son
The positive and direct current of battery module fills between plus end 30 and the cathode of each sub- battery module and the direct current
It fills between negative terminal 40 and is electrically connected respectively by the conducting wire with one of them corresponding relay.By control it is each after
The open and close timing of electric appliance, it will be able to will be any one or any number of during the DC charging of power battery pack 1
Adjacent sub- battery module and direct current fill plus end 30 and direct current fills negative terminal 40 and is electrically connected to form connected loop.
Fig. 6 shows the specific implementation of power battery pack 1 shown in fig. 5.As shown in fig. 6, at least two string
The sub- battery module of connection may include the concatenated first sub- battery module 101With the second sub- battery module 102And first son
Battery module 101Cathode and the described second sub- battery module 102Anode electrical connection, the switching device 20 include it is main just after
Electric appliance 201, the negative relay 202 of switching, main negative relay 203 and the positive relay 204 of switching, in which: main positive relay 201 and the
One sub- battery module 101It is in parallel with positive relay 204 is switched after series connection, switch one end and the first sub- battery of positive relay 204
Module 101Cathode electrical connection, the other end fill plus end 30 with direct current and be electrically connected, main positive 201 one end of relay and the first son are electric
Pond module 101Anode electrical connection, the other end fills plus end 30 with direct current and is electrically connected；Main negative relay 203 and the second sub- battery
Module 102It is in parallel with negative relay 202 is switched after series connection, switch one end and the second sub- battery module 10 of negative relay 2022's
Anode electrical connection, the other end fill negative terminal 40 with direct current and are electrically connected, one end of main negative relay 203 and the second sub- battery module
102Cathode electrical connection, the other end fills negative terminal 40 with direct current and is electrically connected.
It, can be to the first sub- battery module 10 when power battery pack 1 shown in fig. 6 needs to carry out DC charging1With
Two sub- battery modules 102DC charging stage by stage is carried out, namely first to the first sub- battery module 101With the second sub- battery module
102One of carry out DC charging, and in the first sub- battery module 101With the second sub- battery module 102One of direct current fill
Just start after the completion of electricity to the first sub- battery module 101With the second sub- battery module 102The other of carry out DC charging.
Below first to the first sub- battery module 101DC charging is carried out, then to the second sub- battery module 102It carries out straight
For current charge, to describe the DC charging process stage by stage of power battery pack 1 shown in fig. 6.
Firstly, the main positive relay 201 of closure and the negative relay 202 of switching, switch positive relay 204 and disconnect, thus first
Sub- battery module 101Plus end 30 is filled with direct current and direct current fills negative terminal 40 and has been electrically connected to form to the first sub- battery module 101Into
The DC loop of row DC charging, and the second sub- battery module 10 at this time2Negative 202 institutes of the relay short circuit of the switching being closed, because
This not can be carried out DC charging.In addition, in the first sub- battery module 101During DC charging, main negative relay 203 can be closed
Conjunction can also disconnect.When the first sub- battery module 101After the completion of DC charging, switches negative relay 202 and disconnect, switch positive relay
Device 204 and main negative relay 203 are closed, thus the second sub- battery module 102Plus end 30 is filled with direct current and direct current fills negative terminal
40 form to the second sub- battery module 102The DC loop of progress DC charging, and the first sub- battery module 10 at this time1It is closed
Positive 204 institutes of the relay short circuit of the switching of conjunction, therefore not can be carried out DC charging.In addition, in the second sub- battery module 102Direct current fills
In electric process, main positive relay 201 can be closed or disconnect.Thereby realize the first sub- battery module 101With second
Sub- battery module 102Successively DC charging stage by stage.
Fig. 7 shows another schematic block diagram of the power battery pack 1 according to the first embodiment of the present disclosure.As shown in fig. 7,
On the basis of Fig. 5, power battery pack 1 further includes at least one of service switch 50, current sensor 60 and device for fusing 70,
Wherein Fig. 7 schematically show power battery pack 1 include service switch 50, current sensor 60 and device for fusing 70 this three
Person.
Service switch 50 is connected electrically between the adjacent sub- battery module of any two, for realizing power battery pack 1
Maintenance.Moreover, the position by so arranging service switch 50, can be realized point of the sub- battery module in power battery pack 1
It repairs part.
Current sensor 60 be connected in series in each sub- battery module anode with the direct current fill plus end 30 it
Between conducting wire on, or be connected in series in the cathode of each sub- battery module and the direct current fills leading between negative terminal 40
On line, for detecting the DC charging current of power battery pack 1.Fig. 7 schematically shows current sensor 60 and is connected electrically in
Each the positive of the sub- battery module is filled on the conducting wire between plus end 30 with the direct current.By so arranging current sense
The position of device 60, in any one or any number of any number of adjacent sub- battery modules and direct current can fill plus end 30 and direct current fill it is negative
In the case that terminal 40 is electrically connected to form connected loop, DC charging current can be detected.
The anode that the device for fusing 70 is connected in series in each sub- battery module fills plus end 30 with the direct current
Between conducting wire on, or be connected in series in the cathode of each sub- battery module and the direct current fills between negative terminal 40
On conducting wire, for occurring unsafe condition during 1 DC charging of power battery pack (for example, 1 temperature mistake of power battery pack
Heat etc.) when fuse to disconnect corresponding sub- battery module and direct current and fill the connection that plus end 30 and direct current fill between negative terminal 40 and return
Road.Fig. 7 schematically show device for fusing 70 be connected in series in each sub- battery module anode filled with the direct current
On conducting wire between plus end 30.It, can be in any one or any number of any number of phases by so arranging the position of device for fusing 70
Adjacent sub- battery module and direct current fills plus end 30 and direct current fills in the case that negative terminal 40 is electrically connected to form connected loop, can
It is enough fuse when there is unsafe condition with disconnect corresponding sub- battery module and direct current fill plus end 30 and direct current fill negative terminal 40 it
Between connected loop.
Fig. 8 shows the another schematic block diagram of the power battery pack 1 according to the first embodiment of the present disclosure.As shown in figure 8,
On the basis of Fig. 6, which can also include that (Fig. 8, which is shown, to connect with positive 201 serial or parallel connection of relay of master
Connection type) the positive relay 207 of fast charge and (Fig. 8 shows series connection side with negative 203 serial or parallel connection of relay of master
Formula) the negative relay 208 of fast charge, for realizing the quick charge of power battery pack 1.
Further, as shown in figure 8, power battery pack 1 can also include preliminary filling relay 209 and preliminary filling resistance 210,
Middle preliminary filling relay 209 and preliminary filling resistance 210 are in parallel with the positive relay 201 of master after connecting, and this makes it possible to realize power battery
The preliminary filling operation of packet 1.Such as when needing to carry out DC charging to power battery pack 1, main positive relay 201, fast is disconnected first
Positive relay 207, the positive relay 204 of switching, the negative relay 202 of switching and the negative relay 208 of fast charge are filled, preliminary filling relay is closed
209 and main negative relay 203, the sub- battery module 10 of the first of such power battery pack 11With the second sub- battery module 102Just pass through
It exports main plus end 80 and exports main negative terminal 90 and discharge to load capacitance (not shown), to realize that preliminary filling operates.
According to second embodiment of the present disclosure, a kind of power battery pack charging system is provided.As shown in figure 9, the power electric
Pond packet charging system 7000 may include power battery pack 701 and battery management system 702.Wherein, on power battery pack 701 is
The power battery pack that face combines Fig. 1 to Fig. 8 to describe；Battery management system 702 is asked for receiving power battery pack DC charging
It asks, and control the switching device in power battery pack 701 after receiving the power battery pack DC charging request to move
The direct current in any one or any number of adjacent sub- battery modules and power battery pack 701 in power battery pack 701 fills just
Terminal and direct current fill negative terminal electrical connection to form connected loop.
Through the above technical solutions, since the voltage of every sub- battery module in power battery pack 701 is compared to power
It is to be greatly reduced for the global voltage of battery pack 701, and is any during the DC charging of power battery pack 701
One or any number of adjacent sub- battery modules fill plus end with direct current by switching device and direct current fills negative terminal and is electrically connected
It fetches to form connected loop, therefore DC output voltage (such as 300V) can be utilized than the nominal DC of power battery pack 701
The low direct-current charging post of voltage (being greater than 500V) carries out DC charging to high voltage power battery pack 7011, this not only enhances
The vehicle adaptability of pure electric automobile, and reduce the requirement to the DC output voltage section of direct-current charging post.
In addition, battery management system 702 can automatically control switching when power battery pack 701 is needed by DC charging
Device is by any one or any number of adjacent sons in the concatenated sub- battery module of at least two in power battery pack 701
Battery module and direct current fill plus end and direct current fill negative terminal be electrically connected formed connected loop to complete power battery pack 701
DC charging, such as battery management system 702 can first control switching device and fill one of them sub- battery module with direct current
Plus end and direct current fill negative terminal and are electrically connected to form DC loop, then after the completion of the sub- battery module is by DC charging,
Start to control that next sub- battery module and direct current are filled plus end by switching device and direct current fills negative terminal and is electrically connected and formed directly
Road is flowed back to, is so recycled, until all sub- battery modules are completed by DC charging.
Battery management system 702 charging gun can also be pulled up based on user and realized again insertable into the operation of charging gun to
Few two concatenated sub- battery modules are by DC charging stage by stage.For example, in this DC charging process of power battery pack 701
In, after user is inserted into charging gun for the first time, battery management system 702 is communicated with direct-current charging post and starts control switching
One of them sub- battery module and direct current are filled plus end to device and direct current fills negative terminal and is electrically connected to form DC loop and comes pair
The sub- battery module carries out DC charging, and after the sub- battery module is completed by DC charging, battery management system 702 is reported
Vehicle needs user pull up the operation of charging gun to prompt user's sub- battery module to be completed by DC charging；Then, when
User pull up charging gun and again insertable into charging gun after, battery management system 702 is communicated with direct-current charging post, starts to control
Next sub- battery module and direct current are filled plus end to switching device processed and direct current fills negative terminal and is electrically connected to form DC loop
DC charging is carried out to next sub- battery module；So circulation, until all sub- battery modules are completed by DC charging.
In a kind of possible embodiment, battery management system 702 can be also used for monitoring just by the son of DC charging
The state of battery module, the state may include by the state-of-charge of the sub- battery module of DC charging, electric current, voltage,
Temperature etc.；Then, it controls in the close default state-of-charge of the state-of-charge monitored just by the sub- battery module of DC charging
With default low current (for example, the low currents such as 10A, 5A) by DC charging to default state-of-charge.In this way, it is possible to by
The state-of-charge of the sub- battery module of DC charging is close to after default state-of-charge, it is ensured that by the sub- battery of DC charging
The safe dc of module charges, and ensures that user pulls up charging gun and again insertable into the safety of charging gun operation.
Preferably, in order to realize the flexibility of power battery pack charging system 7000, every sub- battery module is corresponding
Default state-of-charge can be set to the full charge electricity condition of the sub- battery module or the default percentage of full charge electricity condition
Than (such as 50%, 20% or other percentages).
In addition, battery management system 703 can also prompt the user with the estimated charging time of power battery pack 701, so as to
User decides whether to carry out DC charging.
In addition, if the voltage difference in power battery pack 701 between the sub- battery module of every two is excessive, electric car
It can be in malfunction because the voltage difference is excessive, so when carrying out DC charging stage by stage to power battery pack 701, only
After having the DC charging for completing all sub- battery modules in power battery pack 701, electric car can just be run.So
Battery management system 702 can be also used for the voltage difference between the detection sub- battery module of every two, and in the sub- battery of every two
Voltage difference between module determines that power battery pack 701 is finished by DC charging when being all satisfied predeterminated voltage differential pressure requirements.This
Sample can also ensure that the consistency of the state of charge between each sub- battery module.
Figure 10 is the another schematic block diagram according to the power battery pack charging system 7000 of the second embodiment of the present disclosure.Such as figure
Shown in 10, on the basis of Fig. 9, power battery pack charging system 7000 can also include that charge mode selects switch 703, be used for
Selecting at least two concatenated sub- battery modules is by DC charging stage by stage or simultaneously by DC charging.Battery management system
702 can be also used for based on charge mode select switch 703 selection come control switching device by any one or arbitrarily it is more
A adjacent sub- battery module and direct current fill plus end and direct current fills negative terminal and is electrically connected to form connected loop to carry out direct current
Charging.In this way, when the DC output voltage of direct-current charging post can satisfy the DC charging requirement of power battery pack 701, just
Traditional DC charging mode is used for all sub- battery modules in power battery pack 701 while carrying out DC charging；If
It is straight stage by stage with regard to use when the DC output voltage of direct-current charging post is not able to satisfy the DC charging requirement of power battery pack 701
The mode of current charge to carry out DC charging by stages for sub- battery module, enhances the adaptability of electric car.
According to third embodiment of the present disclosure, also provide a kind of electric car, the electric car include above in conjunction with Fig. 9 or
The power battery pack charging system according to the embodiment of the present disclosure of 10 descriptions.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (8)
1. a kind of power battery pack, which is characterized in that the power battery pack includes switching device, direct current fills plus end, direct current fills
Negative terminal and at least two concatenated sub- battery modules, the switching device will during the power battery pack DC charging
Any one or any number of adjacent sub- battery modules and the direct current fill plus end and the direct current fills negative terminal electricity
Connection is to form connected loop.
2. power battery pack according to claim 1, which is characterized in that the switching device includes that the first hilted broadsword is thrown out more
It closes and the second single pole multiple throw, in which:
The movable contact of first single pole multiple throw fills plus end with the direct current and is electrically connected, first single pole multiple throw
Stationary contact respectively with described at least two concatenated sub- battery modules anode be electrically connected correspondingly；
The movable contact of second single pole multiple throw fills negative terminal with the direct current and is electrically connected, second single pole multiple throw
Stationary contact be electrically connected correspondingly with the cathode of described at least two concatenated sub- battery modules respectively.
3. power battery pack according to claim 2, which is characterized in that the power battery pack further includes service switch, electricity
At least one of flow sensor and device for fusing, in which:
The service switch is connected electrically between the adjacent sub- battery module of any two；
The current sensor is connected electrically in the movable contact of first single pole multiple throw and the direct current fills between plus end,
Or it is connected electrically in the movable contact of second single pole multiple throw and the direct current fills between negative terminal；
The device for fusing is connected electrically in the movable contact of first single pole multiple throw and the direct current fills between plus end, or
Person is connected electrically in the movable contact of second single pole multiple throw and the direct current fills between negative terminal.
4. power battery pack according to claim 1, which is characterized in that the switching device includes multiple relays,
In:
The positive and direct current of each sub- battery module fill between plus end and each sub- battery module it is negative
Pole is filled between negative terminal with the direct current to be electrically connected by the conducting wire with one of them corresponding relay respectively.
5. power battery pack according to claim 4, which is characterized in that the power battery pack further includes service switch, electricity
At least one of flow sensor and device for fusing, in which:
The service switch is connected electrically between the adjacent sub- battery module of any two；
The positive and direct current that the current sensor is connected in series in each sub- battery module fills between plus end
On conducting wire, or it is connected in series in the cathode of each sub- battery module and the direct current fills on the conducting wire between negative terminal；
The positive and direct current that the device for fusing is connected in series in each sub- battery module fills leading between plus end
On line, or it is connected in series in the cathode of each sub- battery module and the direct current fills on the conducting wire between negative terminal.
6. according to claim 1 to power battery pack described in any claim in 5, which is characterized in that the sub- battery mould
Block includes any one or any number of series connection and/or the battery modules in parallel being electrically connected.
7. a kind of power battery pack charging system, which is characterized in that the power battery pack charging system includes:
According to claim 1 to power battery pack described in any claim in 6；And
Battery management system, will be any one in the power battery pack for controlling the switching device in the power battery pack
Direct current in a or any number of adjacent sub- battery modules and the power battery pack fills plus end and direct current fills negative terminal electricity
Connection is to form connected loop.
8. a kind of electric car, which is characterized in that the electric car includes power battery pack charging according to claim 7
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820447687.7U CN208290995U (en) | 2018-03-30 | 2018-03-30 | Power battery pack, power battery pack charging system and electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820447687.7U CN208290995U (en) | 2018-03-30 | 2018-03-30 | Power battery pack, power battery pack charging system and electric car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208290995U true CN208290995U (en) | 2018-12-28 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820447687.7U Expired - Fee Related CN208290995U (en) | 2018-03-30 | 2018-03-30 | Power battery pack, power battery pack charging system and electric car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208290995U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112793437A (en) * | 2020-12-30 | 2021-05-14 | 重庆金康赛力斯新能源汽车设计院有限公司 | Direct-current charging contactor, ultrahigh-voltage electric vehicle and power battery charging method |
| CN113937408A (en) * | 2020-06-30 | 2022-01-14 | 蓝谷智慧(北京)能源科技有限公司 | Energy storage device, energy storage control method and device applying energy storage device and equipment |
| CN114268157A (en) * | 2021-12-30 | 2022-04-01 | 重庆长安汽车股份有限公司 | Power battery, power battery series-parallel connection control method and automobile |
-
2018
- 2018-03-30 CN CN201820447687.7U patent/CN208290995U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113937408A (en) * | 2020-06-30 | 2022-01-14 | 蓝谷智慧(北京)能源科技有限公司 | Energy storage device, energy storage control method and device applying energy storage device and equipment |
| CN112793437A (en) * | 2020-12-30 | 2021-05-14 | 重庆金康赛力斯新能源汽车设计院有限公司 | Direct-current charging contactor, ultrahigh-voltage electric vehicle and power battery charging method |
| CN114268157A (en) * | 2021-12-30 | 2022-04-01 | 重庆长安汽车股份有限公司 | Power battery, power battery series-parallel connection control method and automobile |
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Denomination of utility model: Power battery pack, power battery pack charging system and electric vehicle Effective date of registration: 20211213 Granted publication date: 20181228 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
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Date of cancellation: 20231201 Granted publication date: 20181228 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd.|Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |