CN214929132U - Power battery management system of electric vehicle and electric vehicle with same - Google Patents
Power battery management system of electric vehicle and electric vehicle with same Download PDFInfo
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- CN214929132U CN214929132U CN202120008930.7U CN202120008930U CN214929132U CN 214929132 U CN214929132 U CN 214929132U CN 202120008930 U CN202120008930 U CN 202120008930U CN 214929132 U CN214929132 U CN 214929132U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The utility model discloses an electric vehicle's power battery management system and electric vehicle who has it, electric vehicle's power battery management system includes main control module and a plurality of control module group from, main control module includes main control unit and first wireless communication unit, main control unit links to each other with first wireless communication unit, every battery module one-to-one setting from every in control module group and the power battery, every includes from control module group and second wireless communication unit, from the control module group and link to each other with second wireless communication unit, every carries out wireless communication through second wireless communication unit and first wireless communication unit from the control module group and sends every state information from the corresponding battery module of control module monitoring for main control module group, so that main control module carries out wireless monitoring to every battery module's state. According to the utility model discloses electric vehicle's power battery management system, the installation degree of difficulty is low, and weight is lighter, and the maintenance degree of difficulty is low.
Description
Technical Field
The utility model belongs to the technical field of the vehicle technique and specifically relates to a power battery management system of electric vehicle and electric vehicle who has it is related to.
Background
The current power Battery Management System (BMS) architecture employs a harness configured based on a CAN network or based on a daisy chain to connect the battery packs, which is cumbersome in manufacturing process, high in cost, requires frequent maintenance, and is difficult to maintain.
Disclosure of Invention
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide an electric vehicle's power battery management system, the installation degree of difficulty is low, and spatial layout sets up more in a flexible way, and weight is lighter, and the maintenance degree of difficulty is low.
The utility model also provides an electric vehicle of the power battery management system who has foretell electric vehicle.
The power battery management system of the electric vehicle comprises a master control module and a plurality of slave control modules, wherein the master control module comprises a master controller and a first wireless communication unit, the master controller is connected with the first wireless communication unit, each slave control module in the plurality of slave control modules is arranged in one-to-one correspondence with each single battery module in the power battery, each slave control module comprises a slave controller and a second wireless communication unit, the slave controller is connected with the second wireless communication unit, each slave control module is in wireless communication with the first wireless communication unit through the second wireless communication unit to establish wireless communication connection with the master control module, and state information of each corresponding single battery module monitored by the slave controller is sent to the master control module through the wireless communication connection with the master control module, so that the main control module wirelessly monitors the state of each single battery module.
According to the utility model discloses electric vehicle's power battery management system, through with every from control module group and battery cell module one-to-one, the accuracy of following control module group monitoring battery cell module state information has been promoted, furtherly, through at main control module group with from the control module group establish wireless communication connection, make main control module group can synchronous monitoring, manage every battery cell module, and can reduce power battery management system's the installation degree of difficulty betterly, spatial layout sets up more in a flexible way, weight is lighter, it is low to maintain the degree of difficulty.
In addition, according to the utility model discloses electric vehicle's power battery management system can also have following additional technical characterstic:
in some embodiments of the present invention, the state information includes one or more of temperature information, voltage information, current information, internal resistance information, and electric quantity information of the single battery module.
Specifically, every still includes thermodetector, voltage detector, current detector and electric quantity detector from the control module group, thermodetector, voltage detector, current detector and electric quantity detector respectively with link to each other from the controller, from the controller pass through thermodetector, voltage detector, current detector and electric quantity detector monitor corresponding battery cell module's temperature, voltage, electric current and electric quantity, and according to battery cell module's temperature, voltage, electric current and electric quantity acquire corresponding battery cell module's temperature information, voltage information, current information, internal resistance information and electric quantity information, and pass through first wireless communication unit will corresponding battery cell module's temperature information, voltage information, current information, internal resistance information and electric quantity information send main control module group.
The utility model discloses an in some embodiments, every follow the control module group still according to with wireless communication between the main control module group receives the state information of every battery cell module that main control module group issued to manage corresponding battery cell module according to the state information of every battery cell module.
The utility model discloses an in some embodiments, main control module still generates management instruction according to every battery cell module's state information, and according to with every from wireless communication connection between the control module group will management instruction sends every from the control module group to every manages corresponding battery cell module from the control module group.
Optionally, the first wireless communication unit and the second wireless communication unit are both bluetooth modules.
Optionally, the main control module further includes a third communication unit, the third communication unit is connected to the main controller, and the main controller is connected to the whole vehicle communication network of the electric vehicle through the third communication unit, so as to send the state information of the power battery to the whole vehicle communication network.
Specifically, the third communication unit is a CAN communication unit.
In some embodiments of the present invention, the power battery is formed by connecting a plurality of battery cell modules in series and parallel.
The utility model also provides an electric vehicle of the power battery management system who has foretell electric vehicle.
According to the utility model discloses electric vehicle is through setting up power battery management system for power battery management system is less to the influence of putting in order car weight, and need not to use the pencil to connect, makes the shared space of power battery management system less, and the installation degree of difficulty and the maintenance degree of difficulty are low, and makes electric vehicle can acquire power battery's multiple state information in step, and the electric vehicle of being convenient for carries out corresponding operation according to power battery state information.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a power battery management system of an electric vehicle according to an embodiment of the present invention;
fig. 2 is a topology diagram of a power battery management system of an electric vehicle according to an embodiment of the present invention.
Reference numerals:
100: a power battery management system of an electric vehicle;
1: a main control module; 11: a main controller; 12: a first wireless communication unit; 13: a third communication unit;
2: a slave control module; 21: a slave controller; 22: a second wireless communication unit;
3: a power battery; 31: a battery cell module.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A power battery management system 100 for an electric vehicle according to an embodiment of the present invention is described below with reference to fig. 1 to 2.
As shown in fig. 1 and fig. 2, according to the utility model discloses an electric vehicle's power battery management system 100 includes main control module 1 and a plurality of control module group 2 from, specifically, main control module group 1 includes main control unit 11 and first wireless communication unit 12, main control unit 11 links to each other with first wireless communication unit 12, every in a plurality of control module group 2 from control module group 2 and power battery 3 every battery cell module 31 one-to-one setting, therefore, can promote better from control module group 2 to every battery cell module 31's monitoring precision, and, guarantee that a plurality of control module group 2 from can the corresponding battery cell module 31 of synchronous management.
Further, each slave control module 2 includes a slave controller 21 and a second wireless communication unit 22, the slave controller 21 is connected to the second wireless communication unit 22, each slave control module 2 performs wireless communication with the first wireless communication unit 12 through the second wireless communication unit 22 to establish wireless communication connection with the master control module 1, and transmits the state information of the corresponding battery cell module 31 monitored by each slave controller 21 to the master control module 1 through the wireless communication connection with the master control module 1, so that the master control module 1 wirelessly monitors the state of each battery cell module 31, as shown in fig. 2, the power battery management system 100 forms a star topology, and the master control module 1 is a central node.
That is to say, the slave controller 21 can better monitor the status information of the corresponding battery cell modules 31, and send the status information of the battery cell modules 31 to the first wireless communication unit 12 through the second wireless communication unit 22, so that the master controller 11 can synchronously acquire the status information of the battery cell modules 31, thereby, the power battery management system 100 can synchronously monitor the battery cell modules 31 in the power battery 3, the accuracy is high, in addition, the wireless communication connection formed by the first wireless communication unit 12 and the second wireless communication unit 22 enables the master controller 11 to better issue control instructions to the slave controllers 21, and thus the master control module 1 can manage the battery cell modules 31.
It can be understood that, compared with the case that a plurality of battery cell modules 31 are connected by using a wire harness, the power battery management system 100 can better save the installation space of the wire harness by establishing a wireless communication connection, so that the power battery management system 100 has greater flexibility in layout, and the wiring layout of the wire harness is not required to be designed, so that the assembly difficulty and the later maintenance difficulty of the power battery management system 100 can be better reduced. On the other hand, the reduction of the wire harness can better reduce the weight of the power battery management system 100, thereby reducing the influence on the weight of the whole vehicle.
Therefore, in the use process of the power battery 3, each single battery module 31 can be better monitored and managed through the main control module 1, so that whether each single battery module 31 is in a normal state or not is better judged, and therefore when abnormality occurs in the state information of one of the slave control modules 2, troubleshooting can be carried out on the corresponding single battery module 31 relatively quickly, and the later maintenance difficulty of the power battery 3 is reduced.
According to the utility model discloses electric vehicle's power battery management system 100, through with every from control module group 2 and battery cell module 31 one-to-one, the accuracy of following control module group 2 monitoring battery cell module 31 state information has been promoted, furtherly, through at main control module group 1 with from control module group 2 establish wireless communication connection, make main control module group 1 can the synchronous monitoring, manage every battery cell module 31, and can reduce power battery management system 100's the installation degree of difficulty betterly, spatial layout sets up more in a flexible way, and light in weight, the maintenance degree of difficulty is low.
In some examples, the power battery management system 100 develops a wireless communication scheme based on NXP KW 36.
In some embodiments of the present invention, the status information includes one or more of temperature information, voltage information, current information, internal resistance information and power information of the battery cell modules 31, that is, the controller 21 can obtain the temperature information, voltage information, current information, internal resistance information and power information of the battery cell modules 31, so as to send the status information of one or more battery cell modules 31 to be monitored by the main control module 1 to the main control module 1, in other words, the main control module 1 can monitor the same status information, such as power information, of all battery cell modules 31 simultaneously, of course, the main control module 1 can also monitor all status information of all battery cell modules 31 simultaneously, and can monitor different status information of different battery cell modules 31, such as monitoring the temperature information of one of the battery cell modules 31, the power information of the other unit battery module 31 is monitored.
Therefore, the main control module 1 can monitor the state of each single battery module 31 from multiple dimensions, and the power battery management system 100 can comprehensively monitor and manage the overall working state of the power battery 3. Further, when the main control module 1 monitors that one of the state information of the single battery module 31 is abnormal, if the temperature is too high, the power-off mode and other modes can be controlled and maintained, if the electric quantity is insufficient, the charging is reminded, and the like, so that the stable operation of the power battery 3 is ensured.
Specifically, each slave control module group 2 further includes a temperature detector, a voltage detector, a current detector and a current detector, the temperature detector, the voltage detector, the current detector and the current detector are respectively connected to the slave controller 21, the slave controller 21 monitors the temperature, the voltage, the current and the electric quantity of the corresponding battery cell module 31 through the temperature detector, the voltage detector, the current detector and the electric quantity detector, acquires the temperature information, the voltage information, the current information, the internal resistance information and the electric quantity information of the corresponding battery cell module 31 according to the temperature, the voltage, the current and the electric quantity information of the battery cell module 31, and transmits the temperature information, the voltage information, the current information, the internal resistance information and the electric quantity information of the corresponding battery cell module 31 to the master control module group 1 through the second wireless communication unit 22.
That is to say, each item of state information of battery cell module 31 is all through corresponding, the independent detector carries out the acquirement of information, therefore, speed and the accuracy that obtain each item of state information of corresponding battery cell module 31 from control module 2 have been promoted, thereby guarantee the actual effect of the state information that main control module 1 accepted, the accuracy, and a plurality of from control module 2 can obtain the state information that corresponds battery cell module 31 simultaneously, make a plurality of from control module 2 can send the state information of a plurality of battery cell modules 31 to main control module 1 comparatively in step, thereby guarantee that power battery management system 100 monitors the synchronism of a plurality of battery cell modules 31.
In some examples, each slave control module 2 further receives the state information of each battery cell module 31 sent by the master control module 1 according to the wireless communication connection with the master control module 1, and manages the corresponding battery cell module 31 according to the state information of each battery cell module 31, that is, the slave control module 2 of each battery cell module 31 can obtain the state information of other battery cell modules 31, so that the slave control module 2 can control the corresponding battery cell module 31 according to other battery cell modules 31, for example, when the electric quantity of the corresponding battery cell module 31 is lower than the electric quantity of other battery cell modules 31, the electric energy output of the corresponding battery cell module 31 is reduced, thereby ensuring that the electric quantity of each battery cell module 31 keeps synchronous.
In other words, each slave control module 2 can communicate with each other, so that the working states of the plurality of battery cell modules 31 can be synchronized well, and the difficulty of monitoring and managing all the battery cell modules 31 by the power battery management system 100 is reduced.
In other examples, the master control module 1 further generates a management instruction according to the state information of each battery cell module 31, and sends the management instruction to each slave control module 2 according to the wireless communication connection with each slave control module 2, so that each slave control module 2 manages the corresponding battery cell module 31, that is, by generating and storing the corresponding management instruction according to the multiple kinds of state information of the battery cell modules 31 in the power battery management system 100, complexity of signal transmission in the wireless communication process is reduced, and after receiving the management instruction from the slave control module 2, the operation corresponding to the management instruction can be directly performed, thereby reducing difficulty in executing the instruction by the slave control module 2 to manage the corresponding battery cell module 31.
In some examples, the first wireless communication unit 12 and the second wireless communication unit 22 are both bluetooth modules, and since the bluetooth module development process is mature, the bluetooth module has a certain price advantage, and has a stable communication function, and is convenient for management, thereby the investment cost of the first wireless communication unit 12 and the second wireless communication unit 22 can be reduced well, and the development difficulty is low, so that the wireless communication connection can be stably performed between the slave control module 2 and the master control module 1, and the stable transmission of signals is ensured.
In another example, referring to fig. 1, the main control module 1 further includes a third communication unit 13, the third communication unit 13 is connected to the main controller 11, the main controller 11 is connected to the entire vehicle communication network of the electric vehicle through the third communication unit 13 to send the state information of the power battery 3 to the entire vehicle communication network, that is, the power battery management system 100 is connected to the entire vehicle communication network through the third communication unit 13, so that the electric vehicle can obtain the state information of the power battery 3, the consistency of the entire system of the electric vehicle is improved, it is convenient to perform operations such as displaying the battery temperature information and/or the battery level information on a display screen, so that a driver can perform vehicle operations according to the state information of the power battery 3, for example, when the power battery 3 is low in capacity, the driver can intuitively receive the information, and the power battery 3 is charged, so that the user experience can be better improved.
Specifically, the third communication unit 13 is a CAN communication unit, and the CAN communication unit has the characteristics of high communication rate, easy implementation and high cost performance, so that the stability of the third communication unit 13 in the process of sending a signal to the whole vehicle communication network is ensured, and the accurate transmission of the state information of the power battery 3 is ensured.
In some examples, as shown in fig. 2, the power battery 3 is formed by connecting a plurality of battery modules 31 in series and parallel, so that the overall electric energy capacity of the power battery 3 can be better increased to improve the cruising ability of the electric vehicle, and of course, the number and connection mode of the battery modules 31 can be selected according to the design requirement of the electric vehicle, so as to ensure that the power battery 3 meets the use requirement of the electric vehicle.
The utility model also provides an electric vehicle of power battery management system 100 with foretell electric vehicle.
According to the utility model discloses electric vehicle, through setting up power battery management system 100 for power battery management system 100 is less to the influence of putting in order car weight, and need not to use the pencil to connect, makes the shared space of power battery management system 100 less, and the installation degree of difficulty and the maintenance degree of difficulty are low, and makes electric vehicle can acquire power battery 3's multiple state information in step, and the electric vehicle of being convenient for carries out corresponding operation according to power battery 3 state information.
Other configurations and operations of the power battery management system 100 of the electric vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A power battery management system of an electric vehicle is characterized by comprising a master control module and a plurality of slave control modules, wherein the master control module comprises a master controller and a first wireless communication unit, the master controller is connected with the first wireless communication unit, each slave control module in the plurality of slave control modules is arranged in one-to-one correspondence with each single battery module in a power battery, each slave control module comprises a slave controller and a second wireless communication unit, the slave controller is connected with the second wireless communication unit, each slave control module is in wireless communication with the first wireless communication unit through the second wireless communication unit so as to establish wireless communication connection with the master control module, and state information of each monitored slave controller corresponding single battery module is sent to the master control module through the wireless communication connection with the master control module, so that the main control module wirelessly monitors the state of each single battery module.
2. The power battery management system of an electric vehicle according to claim 1, wherein the state information includes one or more of temperature information, voltage information, current information, internal resistance information, and capacity information of the battery cell module.
3. The power battery management system of an electric vehicle according to claim 2, wherein each of the slave control modules further includes a temperature detector, a voltage detector, a current detector, and a charge detector, the temperature detector, the voltage detector, the current detector, and the charge detector are respectively connected to the slave controller, the slave controller monitors the temperature, voltage, current, and charge of the corresponding unit battery module through the temperature detector, the voltage detector, the current detector, and the charge detector, acquires the temperature information, the voltage information, the current information, the internal resistance information, and the charge information of the corresponding unit battery module according to the temperature, the voltage, the current, and the charge of the unit battery module, and transmits the temperature information, the voltage information, the internal resistance information, and the charge information of the corresponding unit battery module through the first wireless communication unit, And the current information, the internal resistance information and the electric quantity information are sent to the main control module.
4. The power battery management system of claim 1, wherein each slave control module further receives the status information of each battery cell module sent by the master control module according to the wireless communication connection with the master control module, and manages the corresponding battery cell module according to the status information of each battery cell module.
5. The power battery management system of an electric vehicle according to claim 1, wherein the master control module further generates a management command according to the state information of each battery cell module and transmits the management command to each slave control module according to a wireless communication connection with the each slave control module so that the each slave control module manages the corresponding battery cell module.
6. The power battery management system of an electric vehicle according to any one of claims 1 to 5, wherein the first wireless communication unit and the second wireless communication unit are both Bluetooth modules.
7. The power battery management system of the electric vehicle as claimed in any one of claims 1 to 5, wherein the main control module further comprises a third communication unit, the third communication unit is connected to the main controller, and the main controller is connected to the entire vehicle communication network of the electric vehicle through the third communication unit so as to send the state information of the power battery to the entire vehicle communication network.
8. The power battery management system of an electric vehicle according to claim 7, wherein the third communication unit is a CAN communication unit.
9. The power battery management system of an electric vehicle according to claim 1, wherein the power battery is constructed by a plurality of battery cell modules connected in series and parallel.
10. An electric vehicle characterized by comprising the power battery management system of the electric vehicle according to any one of claims 1 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116039443A (en) * | 2023-01-03 | 2023-05-02 | 上汽通用汽车有限公司 | Wireless monitoring system of power battery and vehicle comprising wireless monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116039443A (en) * | 2023-01-03 | 2023-05-02 | 上汽通用汽车有限公司 | Wireless monitoring system of power battery and vehicle comprising wireless monitoring system |
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