CN106356909B - Battery management system and method - Google Patents
Battery management system and method Download PDFInfo
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- CN106356909B CN106356909B CN201510437178.7A CN201510437178A CN106356909B CN 106356909 B CN106356909 B CN 106356909B CN 201510437178 A CN201510437178 A CN 201510437178A CN 106356909 B CN106356909 B CN 106356909B
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Abstract
The invention discloses a kind of battery management system and methods, wherein, the system includes: the first to N battery information collector being serially connected, first to N battery information collector sample respectively corresponding first to N battery pack information, wherein, it is connected between every two battery information collector by two -way difference connection；First switch module；Second switch module；Battery management controller, for in the first acquisition mode control first switch module be connected and control second switch module closing, information of the control first simultaneously to N battery information collector sampling first to N battery pack, and information is sent along first direction, and second switch module is controlled in the second acquisition mode and is connected and controls the closing of first switch module, information of the control first simultaneously to N battery information collector sampling first to N battery pack, and information is sent in a second direction, wherein, first direction and second direction are opposite direction.
Description
Technical field
The present invention relates to battery technology field, in particular to a kind of battery management system and method.
Background technique
Currently, battery management system in the related technology is adopted by a battery management controller and multiple battery informations mostly
Storage forms, and is connected between battery information collector by differential communication line.
Battery information collector needs to consume the electric energy of battery pack, and each battery information collector is due to being electrically connected
It is upper different at a distance from battery management controller, so the data volume transmitted in data transfer is different, so as to cause
The power consumption of battery pack is uneven.In addition, being asked when encountering the disconnection of differential communication line or the failure of some battery information collector etc.
When topic, it will lead to many battery packs and battery management controller disconnect communication connection, battery management controller can not obtain these
The information of battery pack, so that the safety of battery pack is unable to get guarantee, system reliability is poor.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of battery management system, is capable of the power consumption of balancing battery group, while can enhance the reliable of system
Property.
Second object of the present invention is to propose a kind of battery management method.
The battery management system of embodiment according to a first aspect of the present invention, comprising: first be serially connected to N battery is believed
Cease collector, described first to N battery information collector sample respectively corresponding first to N battery pack information, wherein
It is connected between every two battery information collector by two -way difference connection, wherein N is positive integer；With first battery
The connected first switch module of information acquisition device；The second switch module being connected with the N battery information collector；Cell tube
Manage controller, the battery management controller and the multiple battery information collector, the first switch module and described the
Two switch modules pass through the two -way difference connection and are connected, and the battery management controller is used in the first acquisition mode
It controls the first switch module to be connected and control the second switch module closing, while controlling described first to N battery
Information acquisition device sampling first and sends the information along first direction to the information of N battery pack；Battery manager is also used to
The second switch module is controlled in the second acquisition mode to be connected and control the first switch module closing, while controlling institute
The first information to N battery information collector sampling first to N battery pack is stated, and sends the information in a second direction,
Wherein, the first direction and the second direction are opposite direction.
Battery management system according to an embodiment of the present invention, N number of battery information collector sample the letter of N number of battery pack respectively
Breath, and N number of battery information collector is connected by two -way difference connection, battery management controller is by controlling respectively with first
The switch module being connected with N battery information collector is turned on and off, to control the information rotation of battery information collector
The direction opposite along two is transmitted, and can balance the total amount of data of each transmitted information of battery information collector as a result, thus flat
The power consumption for the battery pack that weighs.It is all or big absolutely meanwhile when two -way difference connection or some battery information collector break down
The information of percentage of batteries group can still be transmitted to battery management controller, to enhance the reliability of system.
The battery management method of embodiment according to a second aspect of the present invention, comprising the following steps: pass through first to N battery
Information acquisition device sample respectively corresponding first to N battery pack information, wherein described first to N battery information acquire
Device is serially connected, and is connected between battery information collector described in every two by two -way difference connection, wherein N is positive integer；
Determine the acquisition mode of the battery information collector；If the acquisition mode is the first acquisition mode, described the is controlled
One information to N battery information collector sampling first to N battery pack, and the information is sent to institute along first direction
State battery management controller；If the acquisition mode is the second acquisition mode, controls described first and adopt to N battery information
The information and is sent to the battery management controller in a second direction to the information of N battery pack by storage sampling first,
Wherein, the first direction and the second direction are opposite direction.
Battery management method according to an embodiment of the present invention, N number of battery information collector sample the letter of N number of battery pack respectively
Breath, and N number of battery information collector by two -way difference connection be connected, by control respectively with first and N battery information
The connected switch module of collector is turned on and off, to control the information rotation of battery information collector along two opposite sides
To transmitting, the total amount of data of each transmitted information of battery information collector can be balanced as a result, thus the function of balancing battery group
Consumption.Meanwhile when two -way difference connection or some battery information collector break down, whole or most batteries group
Information can still be transmitted to battery management controller, to enhance the reliability of system.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the structural block diagram according to the battery management system of one embodiment of the invention；
Fig. 2 is the structural schematic diagram according to the battery management system of a specific embodiment of the invention；
Fig. 3 is the chip schematic diagram according to the battery management system of a specific embodiment of the invention；
Fig. 4 is the battery information collector chip internal shift according to the battery management system of a specific embodiment of the invention
The schematic diagram of register；
Fig. 5 is the flow chart according to the battery management method of one embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Fig. 1 is the structural block diagram according to the battery management system of one embodiment of the invention.
As shown in Figure 1, the battery management system of the embodiment of the present invention, comprising: first be serially connected to N battery information
Collector 10, first switch module 20, second switch module 30 and battery management controller 40.
Wherein, first to N battery information collector sample respectively corresponding first to N battery pack information, such as
The information such as the temperature of battery pack and voltage.Wherein, it is connected between every two battery information collector by two -way difference connection,
Wherein, N is positive integer.
First switch module 20 is connected with the first battery information collector, and second switch module 30 is adopted with N battery information
Storage is connected.
Battery management controller 40 and multiple battery information collectors 10, first switch module 20 and second switch module 30
It is connected by two -way difference connection, battery management controller 40 is used to control first switch module in the first acquisition mode
20 are connected and control the closing of second switch module 30, while controlling first to the sampling of N battery information collector 10 first to N
The information of battery pack, and information is sent along first direction；And second switch module conducting 30 is controlled in the second acquisition mode
And the closing of first switch module 20 is controlled, while control first to N battery information collector 10 samples first to N battery pack
Information, and send information in a second direction, wherein first direction and second direction are opposite direction.
For the battery management system that the embodiment of the present invention will be further explained, below with reference to each of specific battery management system
A schematic diagram is described in detail.
Fig. 2 is the structural schematic diagram according to the battery management system of a specific embodiment of the invention.As shown in Fig. 2, the
One is serially connected to N battery information collector, for sample respectively corresponding first to N battery pack information.Fig. 3 is root
According to the chip schematic diagram of the battery management system of a specific embodiment of the invention, Fig. 4 is according to one specific implementation of the present invention
The schematic diagram of the battery information collector chip internal shift register of the battery management system of example.As shown in figure 4, the present invention is implemented
First to N battery information collector of example respectively includes bidirectional shift register, and battery management controller is two-way by controlling
The data moving direction of shift register with control along first direction or second direction send first to N battery pack information.
Therefore, in Fig. 3, two CMD (command, order) interface of battery information collector chip and two DATA (data) are connect
Mouth not only can receive the data of input, but also can be with output data, so that each battery information collector can pass through CMD interface
The command information of bi-directional battery management controller, and pass through the information of DATA interface bi-directional battery information collector,
Information can be not only transmitted along first direction shown in Fig. 2, but also can transmit information along second direction shown in Fig. 2.
As shown in figure 3, being provided with first switch module and second switch module on differential communication line.Wherein, it first opens
Closing module can control the first leading to the information transmitting between N battery information collector and battery management controller on first direction
Disconnected, second switch module can control in second direction first to the letter between N battery information collector and battery management controller
Cease the on-off of transmitting.To realize this control method, in battery management system shown in Fig. 2, first switch module can be set
It sets between the first battery information collector and battery management controller, second switch module is arranged and is adopted in N battery information
Between storage and battery management controller.Wherein, field-effect tube or relay etc. can be selected in the switch module of the embodiment of the present invention
Device is turned on and off to be convenient to control it.
In one embodiment of the invention, battery management controller can control the information of each battery information collector to pass
Pass direction.When battery information collector is in the first acquisition mode, controllable first switch module, which is connected and controls second, to be opened
It closes module to close, while controlling first and sending information along first direction to N battery information collector；When battery information collector
When in the second acquisition mode, controllable second switch module is connected and controls the closing of first switch module, while controlling first
Information is sent in a second direction to N battery information collector.It, can by taking battery information collector is in the second acquisition mode as an example
Referring to Fig. 2, the i-th battery information collector can successively receive the first battery information collector to the (i-1)-th battery information collector and send out
The information sent, and the information that the first battery information collector received to the (i-1)-th battery information collector is sent and the i-th electricity
The information of pond information acquisition device is sent to i+1 battery information collector, wherein i is less than or equal to N-1.And N battery information
The information of first battery information collector to N battery information collector need to be sent to battery management controller by collector.Tool
Body, can refer to Fig. 4, and the bidirectional shift register in the i-th battery information collector is by the first battery information collector to
After the information that i-1 battery information collector is sent is sent to i+1 battery information collector, it is loaded into the information of itself, and send
To i+1 battery information collector.Therefore, if the data volume for the information that each battery information collector is sampled is identical, that
When sending information by a certain direction of transfer, the total amount of data that each battery information collector is transmitted is different.
In one embodiment of the invention, battery management controller can control first to N battery in first time period
Information acquisition device enters the first acquisition mode, and enters second in second time period control first to N battery information collector
Acquisition mode.Wherein, first time period and second time period are equal, and first time period and second time period are periodically handed over
It replaces.Assuming that the every data volume by the transmitting of a battery information collector of each battery information collector battery information collected
It is 1, then passing through the first acquisition mode and the primary sampling of the second acquisition mode completion respectively, and send information to cell tube
After managing controller, the data volume that each battery information collector is transmitted is as shown in table 1.
Table 1
As shown in Table 1, passing through the first acquisition mode and the primary sampling of the second acquisition mode completion respectively, and information is being sent out
When sending to battery management controller, the total amount of data that each battery information collector is transmitted is equal, and is all N+1.
Since battery information collector periodically enters the first acquisition mode and the second acquisition mode, and two kinds of acquisition moulds
The formula duration is identical, so can be approximately considered the data that each battery information collector is transmitted in longer time section
Total amount is equal.In one embodiment of the invention, the acquisition and transmitting of battery information are time-consuming less, therefore can need not be each
Battery information collector is completed once to sample and send information to after battery management controller i.e. handover information direction of transfer.It can
Selection of land, can be respectively in the first acquisition mode and the herein on basis at interval of several minutes switching primary information direction of transfer
Continuous several times acquire battery information and transmit information under two acquisition modes.
In one embodiment of the invention, the specification of each battery information collector is identical, and each battery information
The total amount of data that collector is transmitted is equal, so the electricity that each battery information collector is consumed by its operation and information transmitting
Can be equal, so as to make the power consumption relative equilibrium of each battery pack.
In one embodiment of the invention, it can refer to Fig. 2, when m battery information collector is adopted with m+1 battery information
When two -way difference connection between storage breaks down, battery management controller control first switch module is connected and controls the
Two switch modules are closed, and are controlled the first battery information collector and sent information to m battery information collector with first direction,
So as to obtain first to m battery pack information；Then control second switch module is connected and controls first switch module pass
It closes, and controls m+1 battery information collector and information is sent with second direction to N battery information collector, so as to obtain
M+1 to N battery pack information, wherein m be less than or equal to N.As a result, when the two -way difference between battery information collector
When connection breaks down, battery management controller can still obtain the information of all battery packs, enhance battery management system
Reliability.
In one embodiment of the invention, it can refer to Fig. 2, when q battery information collector breaks down, cell tube
Reason controller control first switch module is connected and controls the closing of second switch module, and controls the first battery information collector extremely
Q-1 battery information collector with first direction send information, so as to obtain first to q-1 battery pack information；Then
Control second switch module is connected and controls the closing of first switch module, and controls q+1 battery information collector to N battery
Information acquisition device sends information with second direction, so as to obtain the information of q+1 to N battery pack, wherein q is less than or waits
In N.As a result, when q battery information collector breaks down, battery management controller can still obtain the letter of other battery packs
Breath, enhances the reliability of battery management system.
It should be appreciated that when there is many places two -way difference connection failure or multiple battery information collector failures, battery
Management Controller still can fetching portion battery pack information.
In addition, battery management controller can be according to the data volume of the information sent along first direction and second direction, judgement
The specific location that difference connection breaks down out or battery information collector breaks down.For example, it is assumed that normal condition
The total amount of data for the information that lower battery information collector is sampled is N, for certain sampling, if the information sent along first direction
Data volume be m, the data volume of the information sent in a second direction is N-m, then can determine whether out that m is adopted with m+1 battery information
Two -way difference connection between storage breaks down；If the data volume of the information sent along first direction is q-1, along second party
Data volume to the information of transmission is N-q, then can determine whether out that q battery information collector breaks down.
Battery management system according to an embodiment of the present invention, N number of battery information collector sample the letter of N number of battery pack respectively
Breath, and N number of battery information collector is connected by two -way difference connection, battery management controller is by controlling respectively with first
The switch module being connected with N battery information collector is turned on and off, to control the information rotation of battery information collector
The direction opposite along two is transmitted, and can balance the total amount of data of each transmitted information of battery information collector as a result, thus flat
The power consumption for the battery pack that weighs.It is all or big absolutely meanwhile when two -way difference connection or some battery information collector break down
The information of percentage of batteries group can still be transmitted to battery management controller, to enhance the reliability of system.
The battery management system of corresponding above-described embodiment, the present invention also propose a kind of battery management method.
Fig. 5 is the flow chart according to the battery management method of one embodiment of the invention.
As shown in figure 5, the battery management method of the embodiment of the present invention, comprising the following steps:
S501, by first to N battery information collector sample respectively corresponding first to N battery pack information,
Wherein, it first is serially connected to N battery information collector, is communicated between every two battery information collector by two -way difference
Line is connected, wherein N is positive integer.
In one embodiment of the invention, first can be controlled by battery management controller to the acquisition of N battery information
Device is sampled, and battery management controller and first constitutes battery management system to N battery information collector.Fig. 2 is root
According to the structural schematic diagram of the battery management system of a specific embodiment of the invention.As shown in Fig. 2, first to N battery information
Collector is serially connected, for sample respectively corresponding first to N battery pack information.Fig. 3 is according to one tool of the present invention
The chip schematic diagram of the battery management system of body embodiment, Fig. 4 are the battery management system according to a specific embodiment of the invention
The schematic diagram of the battery information collector chip internal shift register of system.As shown in figure 4, the first to N of the embodiment of the present invention
Battery information collector respectively includes bidirectional shift register, can by control bidirectional shift register data moving direction with
Control along first direction or second direction send first to N battery pack information.Therefore, in Fig. 3, battery information collector
The two CMD interfaces and two DATA interfaces of chip not only can receive the data of input, but also can be with output data, thus each
Battery information collector can be by the command information of CMD interface bi-directional battery management controller, and passes through DATA interface
The information of bi-directional battery information collector not only can transmit information along first direction shown in Fig. 2, but also can be along shown in Fig. 2
Second direction transmit information.
S502 determines the acquisition mode of battery information collector.
S503, if acquisition mode is the first acquisition mode, control first to N battery information collector sampling first
To the information of N battery pack, and battery management controller is sent information to along first direction.
S504, if acquisition mode is the second acquisition mode, control first to N battery information collector sampling first
To the information of N battery pack, and battery management controller is sent information in a second direction, wherein first direction and second
Direction is opposite direction.
As shown in figure 3, being provided with first switch module and second switch module on differential communication line.Wherein, it first opens
Closing module can control the first leading to the information transmitting between N battery information collector and battery management controller on first direction
Disconnected, second switch module can control in second direction first to the letter between N battery information collector and battery management controller
Cease the on-off of transmitting.To realize this control method, in battery management system shown in Fig. 2, first switch module can be set
It sets between the first battery information collector and battery management controller, second switch module is arranged and is adopted in N battery information
Between storage and battery management controller.Wherein, battery management controller and multiple battery information collectors, first switch module
Pass through two -way difference connection with second switch module to be connected.Wherein, the switch module of the embodiment of the present invention, optional use effect
It should manage or the devices such as relay, be turned on and off to be convenient to control it.
In one embodiment of the invention, battery management controller can control the information of each battery information collector to pass
Pass direction.When battery information collector is in the first acquisition mode, controllable first switch module, which is connected and controls second, to be opened
It closes module to close, while controlling first and sending information along first direction to N battery information collector；When battery information collector
When in the second acquisition mode, controllable second switch module is connected and controls the closing of first switch module, while controlling first
Information is sent in a second direction to N battery information collector.It, can by taking battery information collector is in the second acquisition mode as an example
Referring to Fig. 2, the i-th battery information collector can successively receive the first battery information collector to the (i-1)-th battery information collector and send out
The information sent, and the information that the first battery information collector received to the (i-1)-th battery information collector is sent and the i-th electricity
The information of pond information acquisition device is sent to i+1 battery information collector, wherein i is less than or equal to N-1.And N battery information
The information of first battery information collector to N battery information collector need to be sent to battery management controller by collector.Tool
Body, can refer to Fig. 4, and the bidirectional shift register in the i-th battery information collector is by the first battery information collector to
After the information that i-1 battery information collector is sent is sent to i+1 battery information collector, it is loaded into the information of itself, and send
To i+1 battery information collector.Therefore, if the data volume for the information that each battery information collector is sampled is identical, that
When sending information by a certain direction of transfer, the total amount of data that each battery information collector is transmitted is different.
In one embodiment of the invention, first can be controlled to the entrance of N battery information collector in first time period
First acquisition mode, and enter the second acquisition mode in second time period control first to N battery information collector.Wherein,
First time period and second time period are equal, and first time period and second time period periodically replace.Assuming that each battery
The every data volume by the transmitting of a battery information collector of information acquisition device battery information collected is 1, then respectively
Primary sampling is completed by the first acquisition mode and the second acquisition mode, and after sending information to battery management controller, often
The data volume that a battery information collector is transmitted is as shown in table 1.
As shown in Table 1, passing through the first acquisition mode and the primary sampling of the second acquisition mode completion respectively, and information is being sent out
When sending to battery management controller, the total amount of data that each battery information collector is transmitted is equal, and is all N+1.
Since battery information collector periodically enters the first acquisition mode and the second acquisition mode, and two kinds of acquisition moulds
The formula duration is identical, so can be approximately considered the data that each battery information collector is transmitted in longer time section
Total amount is equal.In one embodiment of the invention, the acquisition and transmitting of battery information are time-consuming less, therefore can need not be each
Battery information collector is completed once to sample and send information to after battery management controller i.e. handover information direction of transfer.It can
Selection of land, can be respectively in the first acquisition mode and the herein on basis at interval of several minutes switching primary information direction of transfer
Continuous several times acquire battery information and transmit information under two acquisition modes.
In one embodiment of the invention, the specification of each battery information collector is identical, and each battery information
The total amount of data that collector is transmitted is equal, so the electricity that each battery information collector is consumed by its operation and information transmitting
Can be equal, so as to make the power consumption relative equilibrium of each battery pack.
In one embodiment of the invention, it can refer to Fig. 2, when m battery information collector is adopted with m+1 battery information
When two -way difference connection between storage breaks down, controllable first switch module is connected and controls second switch module pass
It closes, and controls the first battery information collector and information is sent with first direction to m battery information collector, so as to obtain the
One to m battery pack information；Then control second switch module is connected and controls the closing of first switch module, and controls m+
1 battery information collector sends information to N battery information collector with second direction, so as to obtain m+1 to N battery
The information of group, wherein m is less than or equal to N.As a result, when the two -way difference connection between battery information collector breaks down
When, battery management controller can still obtain the information of all battery packs, enhance the reliability of battery management system.
In one embodiment of the invention, it can refer to Fig. 2, when q battery information collector breaks down, can control
First switch module is connected and controls the closing of second switch module, and controls the first battery information collector to q-1 battery and believe
Cease collector with first direction send information, so as to obtain first to q-1 battery pack information；Then second switch is controlled
Module be connected and control first switch module closing, and control q+1 battery information collector to N battery information collector with
Second direction sends information, so as to obtain the information of q+1 to N battery pack, wherein q is less than or equal to N.As a result, when
When q battery information collector breaks down, battery management controller can still obtain the information of other battery packs, enhance cell tube
The reliability of reason system.
It should be appreciated that when there is many places two -way difference connection failure or multiple battery information collectors break down,
Battery management controller still can fetching portion battery pack information.
In addition, according to the method for the embodiment of the present invention, it can also be according to the information sent along first direction and second direction
Data volume judges the specific location that differential communication line breaks down or battery information collector breaks down.For example, false
If the total amount of data for the information that battery information collector is sampled under normal circumstances is N, for certain sampling, if along first direction
The data volume of the information of transmission is m, and the data volume of the information sent in a second direction is N-m, then can determine whether out m and m+1
Two -way difference connection between battery information collector breaks down；If the data volume of the information sent along first direction is q-
1, the data volume of the information sent in a second direction is N-q, then can determine whether out that q battery information collector breaks down.
Battery management method according to an embodiment of the present invention, N number of battery information collector sample the letter of N number of battery pack respectively
Breath, and N number of battery information collector by two -way difference connection be connected, by control respectively with first and N battery information
The connected switch module of collector is turned on and off, to control the information rotation of battery information collector along two opposite sides
To transmitting, the total amount of data of each transmitted information of battery information collector can be balanced as a result, thus the function of balancing battery group
Consumption.Meanwhile when two -way difference connection or some battery information collector break down, whole or most batteries group
Information can still be transmitted to battery management controller, to enhance the reliability of system.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, each functional unit in each embodiment of the present invention can integrate in a processing module
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..Although having been shown and retouching above
The embodiment of the present invention is stated, it is to be understood that above-described embodiment is exemplary, and should not be understood as to limit of the invention
System, those skilled in the art can be changed above-described embodiment, modify, replace and become within the scope of the invention
Type.
Claims (14)
1. a kind of battery management system characterized by comprising
The first to N battery information collector being serially connected, described first to N battery information collector samples correspondence respectively
First to N battery pack information, wherein between every two battery information collector by two -way difference connection be connected,
Wherein, N is positive integer；
The first switch module being connected with the first battery information collector；
The second switch module being connected with the N battery information collector；
Battery management controller, the battery management controller and the multiple battery information collector, the first switch mould
Block passes through the two -way difference connection with the second switch module and is connected, and the battery management controller is used for first
The first switch module is controlled when acquisition mode to be connected and control the second switch module closing, while controlling described first
To N battery information collector sampling first to the information of N battery pack, and the information is sent along first direction；Cell tube
Reason controller is also used to control the second switch module in the second acquisition mode and is connected and controls the first switch module
It closes, while controlling the described first information to N battery information collector sampling first to N battery pack, and along second party
To sending the information, wherein the first direction and the second direction are opposite direction.
2. battery management system as described in claim 1, which is characterized in that wherein, the i-th battery information collector is for successively
Receive the information that the first battery information collector is sent to the (i-1)-th battery information collector, and described will received
The information of information and the i-th battery information collector that one battery information collector to the (i-1)-th battery information collector is sent
It is sent to i+1 battery information collector, wherein i is less than or equal to N-1.
3. battery management system as described in claim 1, which is characterized in that the battery management controller is in first time period
It controls described first and enters first acquisition mode to N battery information collector, and in second time period control described the
One to N battery information collector enter second acquisition mode.
4. battery management system as claimed in claim 3, which is characterized in that the first time period and second time period phase
Deng, and the first time period and second time period periodically replace.
5. battery management system as described in claim 1, which is characterized in that when m battery information collector and m+1 battery
When two -way difference connection between information acquisition device breaks down, the battery management controller controls the first switch mould
Block is connected and controls the second switch module and closes, and controls the first battery information collector to the m battery and believe
It ceases collector and the information is sent with the first direction, then control the second switch module and be connected and control described first
Switch module is closed, and controls the m+1 battery information collector to the N battery information collector with the second party
To the transmission information, wherein m is less than or equal to N.
6. battery management system as described in claim 1, which is characterized in that described when q battery information collector failure
Battery management controller controls the first switch module and be connected and control the second switch module closing, and controls described the
One battery information collector sends the information to q-1 battery information collector with the first direction, then described in control
Second switch module is connected and controls the first switch module and closes, and controls q+1 battery information collector to the N
Battery information collector sends the information with the second direction, wherein q is less than or equal to N.
7. battery management system as described in claim 1, which is characterized in that described first to N battery information collector point
Not Bao Kuo bidirectional shift register, the battery management controller is by controlling the data movement side of the bidirectional shift register
To with control along first direction or second direction send described first to N battery pack information.
8. a kind of battery management method characterized by comprising
By first to N battery information collector sample respectively corresponding first to N battery pack information, wherein it is described
First is serially connected to N battery information collector, is communicated between battery information collector described in every two by two -way difference
Line is connected, wherein N is positive integer；
Determine the acquisition mode of the battery information collector；
If the acquisition mode is the first acquisition mode, described first is controlled to N battery information collector sampling first
To the information of N battery pack, and the information is sent to battery management controller along first direction；
If the acquisition mode is the second acquisition mode, described first is controlled to N battery information collector sampling first
To the information of N battery pack, and the information is sent to the battery management controller in a second direction, wherein described
One direction and the second direction are opposite direction.
9. battery management method as claimed in claim 8, which is characterized in that wherein, the i-th battery information collector successively receives
The information that the first battery information collector is sent to the (i-1)-th battery information collector, and first electricity that will be received
The information for the information and the i-th battery information collector that pond information acquisition device to the (i-1)-th battery information collector is sent is sent
To i+1 battery information collector, wherein i is less than or equal to N-1.
10. battery management method as claimed in claim 8, which is characterized in that control described first to N in first time period
Battery information collector enters first acquisition mode, and adopts in second time period control described first to N battery information
Storage enters second acquisition mode.
11. battery management method as claimed in claim 10, which is characterized in that the first time period and second time period phase
Deng, and the first time period and second time period periodically replace.
12. battery management method as claimed in claim 8, which is characterized in that when m battery information collector and m+1 electricity
When two -way difference connection between the information acquisition device of pond breaks down, the first battery information collector is controlled to described the
M battery information collector sends the information with the first direction, then controls the m+1 battery information collector to institute
It states N battery information collector and the information is sent with the second direction, wherein m is less than or equal to N.
13. battery management method as claimed in claim 8, which is characterized in that when q battery information collector failure, control
It makes the first battery information collector and the information is sent with the first direction to q-1 battery information collector, then
It controls q+1 battery information collector and the information is sent with the second direction to the N battery information collector,
In, q is less than or equal to N.
14. battery management method as claimed in claim 8, which is characterized in that described first to N battery information collector point
Not Bao Kuo bidirectional shift register, by controlling the data moving direction of the bidirectional shift register to control along first direction
Or second direction send described first to N battery pack information.
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| CN201510437178.7A CN106356909B (en) | 2015-07-22 | 2015-07-22 | Battery management system and method |
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| CN201510437178.7A CN106356909B (en) | 2015-07-22 | 2015-07-22 | Battery management system and method |
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| CN111976537B (en) * | 2019-05-24 | 2022-06-24 | 北京车和家信息技术有限公司 | Battery management circuit, battery management system, control method of battery management system and electric vehicle |
| CN112583684A (en) * | 2019-09-29 | 2021-03-30 | 上海度普新能源科技有限公司 | Distributed battery management system and communication method and device in system |
| CN111030722B (en) * | 2019-11-13 | 2021-09-21 | 欣旺达电子股份有限公司 | Communication circuit and communication method for battery management system |
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| CN101860053A (en) * | 2009-04-09 | 2010-10-13 | 福特环球技术公司 | Battery monitoring and control system and using method thereof |
| CN104579876A (en) * | 2013-10-10 | 2015-04-29 | 大唐恩智浦半导体有限公司 | Daisy-chain communication bus and protocol |
| CN104627011A (en) * | 2013-11-12 | 2015-05-20 | 福特全球技术公司 | System and method for monitoring voltage of electric vehicle battery pack |
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| EP1806592B1 (en) * | 2005-12-29 | 2017-01-18 | Semiconductor Components Industries, LLC | Method and system for monitoring battery stacks |
| JP5221468B2 (en) * | 2009-02-27 | 2013-06-26 | 株式会社日立製作所 | Battery monitoring device |
| WO2014155986A1 (en) * | 2013-03-28 | 2014-10-02 | ソニー株式会社 | Power storage device, power storage system, and power storage device control method |
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| CN101860053A (en) * | 2009-04-09 | 2010-10-13 | 福特环球技术公司 | Battery monitoring and control system and using method thereof |
| CN104579876A (en) * | 2013-10-10 | 2015-04-29 | 大唐恩智浦半导体有限公司 | Daisy-chain communication bus and protocol |
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