CN216213662U - Intelligent battery core, battery system and electric automobile - Google Patents
Intelligent battery core, battery system and electric automobile Download PDFInfo
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- CN216213662U CN216213662U CN202122201663.8U CN202122201663U CN216213662U CN 216213662 U CN216213662 U CN 216213662U CN 202122201663 U CN202122201663 U CN 202122201663U CN 216213662 U CN216213662 U CN 216213662U
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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
Intelligence electric core, battery system and electric automobile, its characterized in that includes: the battery cell comprises a battery cell main body, a battery cell main body and a battery cell cover, wherein the battery cell main body comprises a battery cell top cover, a battery cell shell and a winding core; the battery cell monitoring and management center is arranged in the battery cell main body and comprises a monitoring module, a management module and a communication module, and the monitoring module and the communication module are electrically connected with the management module; and the information transmitter is used for transmitting information sent by the battery cell monitoring management center, the information transmitter is arranged on the outer side of the battery cell top cover, and the battery cell monitoring management center is connected with the information transmitter. The technical scheme provided by the disclosure can timely and accurately detect the battery cell under various conditions of the electric automobile, and can timely adjust and control the battery system according to different states of the battery cell, thereby effectively improving the reliability and safety of the battery system.
Description
Technical Field
The utility model relates to a power battery makes the field, concretely relates to intelligence electricity core, battery system and electric automobile.
Background
The existing new energy automobile usually forms a battery module by a plurality of single battery cores, and forms a battery system by a plurality of battery modules to supply power for operation. Although the battery management system in the current battery system can monitor information of the single battery cell, the collected information has certain deviation because the device for monitoring the information, such as a voltage sensor, a temperature sensor and the like, is arranged outside the battery cell, and the current battery system monitors the state of part of the battery cell and does not monitor the state of each battery cell.
Although the chinese patent CN201520788221X provides a technical solution for integrating a battery monitoring IC into a battery cell, the battery cell can only feed back different state information of the battery cell to a battery management system, and the battery management system performs unified control. In different states of the electric vehicle, only the cell state is fed back, and various complex situations of the battery system cannot be dealt with, such as: when the electric automobile is in dormancy, the battery management system is also in a dormant state, and at the moment, if only the internal information of the battery core is fed back, the battery management system cannot process the information in time, so that a technical scheme capable of reacting to different states of the battery core in various states of the electric automobile is urgently needed.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, this disclosure provides an intelligence electric core, can satisfy the demand of gathering electric core information and carrying out control to electric core under the electric automobile multiple state, improves electric automobile's security performance.
The first aspect of the present disclosure provides an intelligent battery cell, including:
the battery cell comprises a battery cell main body, a battery cell main body and a battery cell cover, wherein the battery cell main body comprises a battery cell top cover, a battery cell shell and a winding core;
the battery cell monitoring and management center is arranged in the battery cell main body and comprises a monitoring module, a management module and a communication module, and the monitoring module and the communication module are electrically connected with the management module; and the number of the first and second groups,
the information transmitter transmits information sent by the battery cell monitoring management center, the information transmitter is arranged on the outer side of the battery cell top cover, and the battery cell monitoring management center is connected with the information transmitter.
Preferably, the cell monitoring management center is hermetically fixed on the inner side of the cell top cover.
Preferably, a mounting position is arranged on the top cover of the battery core, the mounting position protrudes towards the outside direction of the intelligent battery core, the battery core monitoring and management center is assembled in the mounting position, and the height of the mounting position is matched with the thickness of the battery core monitoring and management center.
Preferably, a buckle is arranged on the outer side of the mounting position, and the information transmitter is fixed with the mounting position through the buckle.
Preferably, the communication module communicates with the information transmitter by wireless transmission.
Preferably, the monitoring module includes an information acquisition unit, and the management module includes an information storage unit and a cell management unit.
Preferably, the information acquisition unit includes a temperature sensor, and the temperature sensor is externally disposed on the electric core monitoring management center, fixed on the point to be measured of the internal temperature of the intelligent electric core, and electrically connected to the electric core monitoring management center.
Preferably, the information acquisition unit includes a temperature acquisition circuit, and the temperature acquisition circuit is integrated inside the cell monitoring management center.
Preferably, the information acquisition unit includes a pressure sensor, and the pressure sensor is fixed on the battery cell top cover and is electrically connected with the battery cell monitoring management center.
Preferably, the information acquisition unit includes a pressure acquisition circuit, and the pressure acquisition circuit is integrated inside the cell control center.
Preferably, the information acquisition unit includes a voltage monitoring circuit, the monitoring circuit is integrated inside the electric core monitoring management center, and the voltage monitoring circuit is electrically connected to the electric core top cover.
Preferably, the voltage monitoring circuit is electrically connected to the cell top cover through a controllable switch, and the controllable switch is controlled by the cell monitoring management center.
Preferably, the cell management unit includes a cell balancing circuit, the cell balancing circuit is integrated in the cell management unit, and the cell balancing circuit is electrically connected to the cell top cover and is capable of balancing the voltage of the intelligent cell.
Preferably, the information storage unit is electrically connected to the information acquisition unit and the battery cell management unit, the information storage unit can store information in the information acquisition unit, and the information in the information storage unit can be called by the battery cell management unit.
Preferably, the battery cell management unit comprises an early warning circuit, the early warning circuit is integrated in the battery cell management unit, and the early warning circuit is electrically connected with the information storage unit and can give out early warning when the intelligent battery cell is abnormal.
Preferably, the cell management unit is electrically connected to the communication module.
A second aspect of the present disclosure provides a battery system, including a power supply battery and a battery management system, where the power supply battery is formed by electrically connecting a plurality of intelligent battery cores provided by the first aspect of the present disclosure, and the battery management system is electrically connected to the information transmitter and further in communication connection with the battery core monitoring management center;
further, the battery management system is electrically connected with the information transmitter of each intelligent electric core in the power supply battery.
The third aspect of the present disclosure provides an electric vehicle including the battery system provided in the second aspect of the present disclosure.
The utility model provides an intelligence electricity core, battery system and electric automobile can carry out timely, accurate detection to electric core under electric automobile multiple condition to can in time carry out adjustment control to battery system according to the different states of electric core, effectively improved battery system's reliability and security.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a cell monitoring management center.
Fig. 2 is a schematic perspective view of an intelligent cell.
Fig. 3 is a schematic cross-sectional view of an intelligent cell.
Description of the reference numerals
Cell main body 1 cell top cover 11
Detailed Description
The conception and the resulting technical effects of the present disclosure will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts based on the embodiments of the present disclosure belong to the protection scope of the present disclosure.
In the description of the embodiments of the present disclosure, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present disclosure and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present disclosure.
In the description of the embodiments of the present disclosure, if a feature is referred to as being "disposed", "fixed", "connected", or "mounted" to another feature, it may be directly disposed, fixed, or connected to the other feature or indirectly disposed, fixed, connected, or mounted to the other feature. In the description of the embodiments of the present disclosure, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than", or "more than", it is understood that the number is not included, and if "more than", "less than", or "within", it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
Referring to fig. 2 and fig. 3, a first aspect of the present disclosure provides an intelligent battery cell, which includes a battery cell main body 1, a battery cell monitoring management center 2, and an information transmitter 3. The cell main body 1 is a main part of an intelligent cell, and comprises a cell top cover 11, a cell shell 12 and a winding core 13, wherein the winding core 13 is arranged inside the cell shell 12; the cell monitoring and management center 2 comprises a monitoring module 21, a management module 22 and a communication module 23, wherein the monitoring module 21 and the communication module 22 are electrically connected with the management module 23; the information transmitter 3 is arranged on the outer side of the cell top cover 11 and connected with the cell monitoring management center 2.
The connection mode of the winding core 13 includes two connection modes, namely, the connection mode is electrically connected with only the cell top cover 11 or the connection mode is electrically connected with the cell top cover 11 and the cell shell 12. Roll up core 13 and assemble back in cell shell 12, need pour into electrolyte into, and sealed by cell top cap 11, roll up core 13 and include the cathode material, cathode material and barrier material, the potential difference can appear between cathode material and the cathode material under the effect of electrolyte, through with the cathode material, cathode material electricity is connected to and can make the anodal post on the cell top cap 11 produce the potential difference with the cathode post on cell top cap 11 or cell top cap 11 and the cell shell 12, and then make whole electric core possess power supply capacity.
Because of the existence of electrolyte, when the core monitoring management center 2 is arranged inside the intelligent battery core, the sealing performance needs to be ensured, and the sealing performance of the core monitoring management center 2 and the electrolyte and the sealing performance of the connection structure of the core monitoring management center 2 and the battery management system outside the intelligent battery core are mainly ensured.
As shown in fig. 2 and fig. 3, the cell monitoring and management center 2 is disposed on the cell top cover 11, and specifically, the cell monitoring and management center 2 is disposed inside the cell top cover 11. The inboard installation position 111 that is provided with of electric core top cap 11, installation position 111 is protruding to intelligent electric core outside direction, and the height and the 2 thickness phase-matchs in electric core monitoring management maincenter of installation position 111, and both can equal, and the height of installation position 111 in this embodiment slightly is greater than the thickness in electric core monitoring management maincenter 2, the dimensional tolerance of the central adaptation electric core monitoring management of being convenient for. The battery core monitoring and management center 2 is assembled in the installation position 111 and is sealed and fixed by a sealing structure, so that the battery core monitoring and management center 2 is ensured to be insulated from electrolyte in an intelligent battery core. The outer side of the mounting position 111 is provided with a buckle for fixing the information transmitter 3. The information transmitter 3 is fixed on the back side of the installation position 111, so that the communication distance between the battery cell monitoring and management center 2 and the information transmitter 3 is short, and the difficulty of communication connection between the battery cell monitoring and management center 2 and the information transmitter 3 is reduced.
When monitoring and managing the maincenter 2 and intelligent electric core outside battery management system communication connection with electric core, there are multiple choices, mainly include wired and wireless two kinds of modes, but each kind of mode all need guarantee that electric core monitoring and managing the maincenter 2 and battery management system's connection has high leakproofness. In this embodiment, a wireless transmission mode is selected, that is, the cell monitoring management center 2 and the information transmission device 3 are connected in a wireless connection mode, specifically, the communication module 23 and the information transmission device 3 are connected in a wireless connection mode. The NFC communication mode selected in this embodiment completes wireless communication between the cell monitoring management center 2 and the information transmitter 3: set up the NFC communicator on electric core monitoring management maincenter 2's communication module 23 and information transmission ware 3 respectively, realize communication between the two by the NFC communicator, the NFC communication mode is owing to need not set up unnecessary seal structure at electric core top cap upper shed, so reduces sealed the degree of difficulty.
The cell monitoring and management center 2 can enter a power supply state after power supply is needed, one scheme is that an intelligent cell supplies power by itself, and the voltage is adjusted by a voltage transformation circuit because the power supply voltage needed by the cell monitoring and management center 2 is usually far less than the voltage of the intelligent cell. The other scheme is that power is supplied from the outside of the intelligent battery cell, namely the power is supplied by the information transmitter 3.
In this embodiment, the selected NFC communication mode not only can realize the communication between the electrical core monitoring management center 2 and the information transmitter 3, but also can supply power to the electrical core monitoring management center 2 through the information transmitter 3. It should be understood that, in this embodiment, the power supply by using NFC is only one option, and also on the premise that the cell monitoring management center 2 and the information transmitter 3 are connected by using an NFC communication method, the intelligent cell is used to supply power by itself, and the two power supply methods may be selected according to actual needs.
As shown in fig. 1, in this embodiment, the monitoring module 21 of the cell monitoring management center 2 is responsible for acquiring various values inside the intelligent cell, for example: the voltage value of intelligence electric core, the inside temperature value of intelligence electric core, the inside pressure value of intelligence electric core etc. monitoring module 21 will gather various numerical values and transmit to electric core monitoring management maincenter 2 in management module 22, preserve and simply handle by management module 22 to transmit the processing result to information transmission ware 3 by communication module 23, transmit to battery management system by information transmission ware 3 again.
The monitoring module 21 includes information acquisition units, and the number and the kind of the information acquisition units can be set according to data to be acquired. In this embodiment, three information acquisition units are included: voltage information acquisition unit, temperature information acquisition unit and pressure information acquisition unit, every information acquisition unit sets up one, can reduce the volume of monitoring module 21 self under the prerequisite of guaranteeing monitoring module 21 monitoring function, and then reduces the volume of electric core monitoring management maincenter 2, reduces the required space of built-in electric core monitoring management maincenter 2.
The voltage information acquisition unit comprises a voltage monitoring circuit, the voltage monitoring circuit is integrated in the cell monitoring management center 2, specifically, integrated in the monitoring module 21, the voltage monitoring circuit is electrically connected with the top cover 11 of the intelligent cell on the one hand, and further electrically connected with the positive pole column and the negative pole column on the top cover 11 respectively, so as to acquire the potential difference between the positive pole column and the negative pole column of the intelligent cell. The voltage monitoring circuit is electrically connected to the management module 22, and transmits the collected data to the management module 22 for processing by the management module 22. In addition, a controllable switch is arranged between the voltage monitoring circuit and the positive pole column and the negative pole column on the top cover 11, and the controllable switch can control whether the voltage monitoring circuit is electrically connected with the positive pole column and the negative pole column of the intelligent cell, so that the voltage acquisition of the intelligent cell can be controlled. The controllable switch is controlled by the management module 22, and the voltage monitoring circuit is controlled to collect the voltage of the intelligent battery cell under certain conditions, and the voltage of the intelligent battery cell is not collected under certain conditions, so that when the battery cell stops working, the voltage collection of the intelligent battery cell can be stopped, and the power consumption of the battery cell monitoring management center 2 is reduced.
The temperature acquisition unit has multiple setting modes, and one setting mode is as follows: the temperature sensor is externally arranged on the main body of the battery core monitoring management center 2, fixed at the temperature acquisition point and electrically connected with the battery core monitoring management center 2. This kind of mode can gather the temperature of the inside fixed area of intelligent electric core more accurately, is applicable to when the condition that certain fixed point temperature of intelligent electric core is crucial to intelligent electric core state monitoring, if: when intelligent electric core is out of control, the relief valve can be opened and the pressure release is carried out, the temperature of relief valve department is promptly for electric core thermal runaway temperature's critical value this moment, other regional temperatures probably have the deviation, if gather other regional temperatures then can't monitor electric core state most accurately, so will set up temperature sensor in relief valve department on electric core top cap 11, can effectively improve its intelligent electric core temperature measurement accuracy. What adopt in this embodiment is that the mode that sets up temperature sensor in electric core top cap 11 relief valve department carries out temperature monitoring to intelligent electric core.
Another setting mode of the temperature acquisition unit is as follows: and integrating a temperature acquisition circuit for acquiring the internal temperature of the intelligent battery core in the battery core monitoring and management center 2. This kind of mode can be integrated inside 2 at electric core management maincenters with the temperature acquisition unit, seals the temperature acquisition unit promptly when sealing up electric core monitoring management maincenter 2, owing to do not possess external temperature sensor, and electric core monitoring management maincenter 2's the sealed degree of difficulty is little, is applicable to the not high intelligent electric core of fixed point monitoring requirement to the temperature.
The pressure acquisition unit has multiple setting modes, and one setting mode is as follows: the pressure sensor is externally arranged on the main body part of the cell monitoring and management center 2, fixed in a pressure acquisition area and electrically connected with the cell monitoring and management center 2. Because each part structure of intelligent electric core is inconsistent, the pressure that leads to each position is different, and this kind of scheme can accurate monitoring intelligent electric core a certain partial pressure change state, is fit for judging the type of electric core state according to inside certain regional pressure of intelligent electric core. Such as: be provided with the relief valve that is used for discharging the inside gaseous of intelligent electric core when intelligent electric core thermal runaway on intelligent electric core top cap 11, when intelligent electric core thermal runaway, the relief valve can be opened and is carried out the exhaust, and the pressure of relief valve department reaches the critical value this moment, if set up near the relief valve with pressure sensor, just can in time control intelligent electric core according to the relief valve pressure change condition, mainly be intelligent electric core thermal runaway early warning. What adopt in this embodiment is that the mode that sets up pressure sensor in electric core top cap 11 relief valve department carries out pressure monitoring to intelligent electric core.
The other setting mode of the pressure acquisition unit is as follows: and integrating a pressure acquisition circuit for acquiring the internal pressure of the intelligent battery core in the battery core monitoring and management center 2. This kind of mode can be integrated inside electric core monitoring management maincenter 2 with pressure acquisition unit, seals pressure acquisition unit promptly when sealing up electric core monitoring management maincenter 2, owing to do not possess external pressure sensor, and electric core monitoring management maincenter 2's the sealed degree of difficulty is little, is applicable to the intelligent electric core that only needs carry out rough monitoring to intelligent electric core pressure variation condition.
The management module 22 includes an information storage unit and a cell management unit. The information storage unit is electrically connected with the battery cell management unit, the information storage unit is responsible for storing information collected by the monitoring module 21 and is electrically connected with the monitoring module 21, and the information in the information storage unit can be called by the battery cell management unit. Still can store some information about intelligent electric core itself in the information storage unit, like model, date of production, batch etc. of intelligent electric core, this type of information can be sent to the outside system of electric core by electric core management unit when carrying out performance detection to intelligent electric core, is convenient for trace to intelligent electric core. The battery core management unit is the core of the battery core monitoring management center 2, can extract the stored information of the information storage unit and carry out simple processing, and transmits the processed information to a battery management system outside the intelligent battery core. The battery core management unit can also receive information transmitted by a battery management system outside the intelligent battery core and control the intelligent battery core. Various different functions such as active equalization, abnormal cell early warning and the like can be realized according to the circuit design in the cell management unit. In this embodiment, a voltage equalization circuit and a voltage early warning circuit are disposed inside the cell management unit.
The voltage balancing circuit is responsible for carrying out voltage balancing on the intelligent battery cell, and can carry out voltage balancing on the intelligent battery cell according to information sent by a battery management system outside the intelligent battery cell: the voltage balancing circuit is electrically connected with the cell top cover 11, and when an electricity supplementing signal of the battery management system is received, the intelligent cell is controlled to be matched with other intelligent cells for supplementing electricity; when a discharging signal of the battery management system is received, the intelligent battery cell is controlled to discharge, in this embodiment, when a discharging operation is performed, because the communication module 22 and the information transmitter 3 adopt NFC communication, the discharging may be selected to be mutually matched with other intelligent battery cells for discharging, and the discharging may also be performed to one side of the information transmitter 3 through the communication module 22.
The voltage early warning circuit is responsible for awakening the battery management system when the voltage is abnormal and the external battery management system is dormant, and carries out early warning on the abnormal voltage inside the intelligent battery core: when the electric automobile stops working, the battery management system can enter a dormant state and does not respond to the abnormity of the battery system any more, and if the battery core has a problem, the battery management system cannot process or send an alarm in time. In this embodiment, a voltage early warning circuit is arranged inside the intelligent battery cell, the voltage early warning circuit is electrically connected with the information storage unit, the voltage data of the intelligent battery cell in the information storage unit is processed in real time, when the data is abnormal, an awakening signal is immediately sent to an external battery management system of the intelligent battery cell through the communication module 22, the battery management system is awakened, an abnormal voltage value is conveyed, and the state of the intelligent battery cell is further processed and judged by the battery management system. In addition, also can be according to actual demand at inside temperature early warning circuit and the pressure early warning circuit of setting up of intelligent electric core, the setting scheme is similar with voltage early warning circuit.
A second aspect of the present disclosure provides a battery system including a power supply battery and a battery management system. The power supply battery is formed by the combination of a plurality of intelligent electric cores that this disclosed first aspect provided, can constitute the battery module by several intelligence electric core, constitutes the power supply battery by a plurality of battery modules again, also can directly constitute the power supply battery by the more intelligent electric core of a quantity. The battery management system is in communication connection with the intelligent battery core, specifically, the battery management system is electrically connected to the information transmitter 3 and is in communication connection with the battery core monitoring and management center 2 through the information transmitter. Because each intelligent electric core is internally provided with an electric core monitoring management center 2, after the intelligent electric cores form a power supply battery, each intelligent electric core can be in communication connection with a battery management system, and then the battery management system monitors and manages and controls each electric core in real time.
The battery management system receives information sent by the battery core monitoring management center 2, judges the information, judges the state of the intelligent battery core according to the processing result, and adjusts the battery system according to different states of the intelligent battery core: when voltage balancing is needed, the battery management system can send information of balanced voltage to the intelligent battery cells, the intelligent battery cells can automatically carry out voltage balancing according to the received information, and because the state of each intelligent battery cell of the battery system is monitored in real time, voltage balancing can be carried out on only a certain intelligent battery cell or certain intelligent battery cells, other intelligent battery cells are kept unchanged, and the accuracy of voltage balancing of the battery system is improved. The battery management system can also perform early warning according to the information processing result sent by the battery core monitoring and management center 2, and if the temperature and the pressure of the intelligent battery core exceed the early warning values, the battery management system can send out early warning signals to perform early warning.
This electric core monitoring management maincenter 2 of intelligence electric core of disclosure has simple data processing ability equally, can simply handle the inside detected data of intelligence electric core, and the focus is processing temperature value and pressure value. The data processing function is mainly to wake up the battery management system in time when the battery management system is in a dormant state, after the wake-up, the core monitoring and management center 2 still needs to send an abnormal signal to the battery management system for processing and judgment, further confirm the state of the intelligent core, and perform corresponding operation under unified control of the battery management system according to the state. When the battery management system is not dormant, the core monitoring and management center 2 only provides corresponding data according to the requirements of the battery management system, and does not perform data processing. The design principle can greatly reduce the volume of the battery core monitoring and management center 2, and further reduce the manufacturing difficulty and cost of the intelligent battery core.
A third aspect of the present disclosure provides an electric vehicle that is powered using the battery system of the second aspect of the present disclosure.
According to the technical scheme, the battery management system can be connected with each intelligent battery cell in the battery management system, monitoring control over each intelligent battery cell is achieved, and monitoring control capacity of the battery management system over the intelligent battery cells is greatly improved. The battery core monitoring control center 2 integrated in the intelligent battery core can more accurately monitor various numerical values required to be monitored by the intelligent battery core, and meanwhile, the battery management system can be started under specific conditions, so that the reliability and the safety of the whole battery system are greatly improved.
The embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, but the present disclosure is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present disclosure. Furthermore, the embodiments of the present disclosure and features of the embodiments may be combined with each other without conflict.
Claims (18)
1. Intelligent electricity core, its characterized in that includes:
the battery cell comprises a battery cell main body, a battery cell main body and a battery cell cover, wherein the battery cell main body comprises a battery cell top cover, a battery cell shell and a winding core;
the battery cell monitoring and management center is arranged in the battery cell main body and comprises a monitoring module, a management module and a communication module, and the monitoring module and the communication module are electrically connected with the management module; and the number of the first and second groups,
the information transmitter transmits information sent by the battery cell monitoring management center, the information transmitter is arranged on the outer side of the battery cell top cover, and the battery cell monitoring management center is connected with the information transmitter.
2. The intelligent cell of claim 1, wherein the cell monitoring management hub is sealingly secured inside the cell header.
3. The intelligent battery cell according to claim 2, wherein a mounting location is provided on the top cover of the battery cell, the mounting location protrudes toward the outside of the intelligent battery cell, the battery cell monitoring and management center is assembled in the mounting location, and the height of the mounting location matches with the thickness of the battery cell monitoring and management center.
4. The intelligent electrical core of claim 3, wherein a buckle is arranged on the outer side of the mounting position, and the information transmitter is fixed with the mounting position through the buckle.
5. The intelligent cell of claim 4, wherein the communication module communicates with the information transmitter by wireless transmission.
6. The intelligent cell of claim 1, wherein the monitoring module comprises an information acquisition unit, and the management module comprises an information storage unit and a cell management unit.
7. The intelligent battery cell according to claim 6, wherein the information acquisition unit comprises a temperature sensor, and the temperature sensor is externally disposed on the battery cell monitoring management center, fixed on the point to be measured of the internal temperature of the intelligent battery cell, and electrically connected to the battery cell monitoring management center.
8. The intelligent cell of claim 6, wherein the information acquisition unit comprises a temperature acquisition circuit integrated within the cell monitoring management hub.
9. The intelligent cell of claim 6, wherein the information acquisition unit comprises a pressure sensor fixed to the cell top cover and electrically connected to the cell monitoring management hub.
10. The intelligent cell of claim 6, wherein the information acquisition unit comprises a pressure acquisition circuit integrated within the cell control hub.
11. The intelligent cell of claim 6, wherein the information acquisition unit comprises a voltage monitoring circuit integrated within the cell monitoring management hub, the voltage monitoring circuit being electrically connected to the cell header.
12. The smart cell of claim 11, wherein the voltage monitoring circuit is electrically connected to the cell header via a controllable switch, the controllable switch being controlled by the cell monitoring management hub.
13. The intelligent battery cell of claim 6, wherein the cell management unit comprises a cell balancing circuit integrated within the cell management unit, and the cell balancing circuit is electrically connected to the cell top cap and is capable of balancing a voltage of the intelligent battery cell.
14. The intelligent battery cell according to claim 6, wherein the information storage unit is electrically connected to the information acquisition unit and the cell management unit, and the information storage unit is capable of storing information in the information acquisition unit, and the information in the information storage unit is capable of being called by the cell management unit.
15. The intelligent battery cell according to claim 6, wherein the battery cell management unit comprises an early warning circuit, the early warning circuit is integrated in the battery cell management unit, and the early warning circuit is electrically connected to the information storage unit and can give out an early warning when the intelligent battery cell is abnormal.
16. The smart cell of claim 6, wherein the cell management unit is electrically connected to the communication module.
17. The battery system is characterized by comprising a power supply battery and a battery management system, wherein the power supply battery is formed by electrically connecting a plurality of intelligent battery cores according to any one of claims 1 to 16, and the battery management system is electrically connected with the information transmitter and further in communication connection with the battery core monitoring and management center;
further, the battery management system is electrically connected with the information transmitter of each intelligent electric core in the power supply battery.
18. An electric vehicle comprising the battery system of claim 17.
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| CN202011048056.6A CN112201866A (en) | 2020-09-29 | 2020-09-29 | Intelligent battery core, battery system and electric vehicle |
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| CN202110685545.0A Active CN113300010B (en) | 2020-09-29 | 2021-06-21 | Battery cell, battery system and electric automobile |
| CN202121380281.XU Active CN215451513U (en) | 2020-09-29 | 2021-06-21 | Battery cell, battery system and electric automobile |
| CN202121386385.1U Active CN215451516U (en) | 2020-09-29 | 2021-06-21 | Battery cell, battery system and electric automobile |
| CN202121382894.7U Active CN215451514U (en) | 2020-09-29 | 2021-06-21 | Battery cell, battery system and electric automobile |
| CN202110790099.XA Active CN113471555B (en) | 2020-09-29 | 2021-07-13 | Intelligent battery cell, battery system and electric automobile |
| CN202110902425.1A Active CN113594562B (en) | 2020-09-29 | 2021-08-06 | Battery cell, battery module, battery pack and electric automobile |
| CN202122201663.8U Active CN216213662U (en) | 2020-09-29 | 2021-09-10 | Intelligent battery core, battery system and electric automobile |
| CN202111060293.9A Pending CN113675485A (en) | 2020-09-29 | 2021-09-10 | Intelligent battery core, battery system and electric automobile |
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| CN202110685545.0A Active CN113300010B (en) | 2020-09-29 | 2021-06-21 | Battery cell, battery system and electric automobile |
| CN202121380281.XU Active CN215451513U (en) | 2020-09-29 | 2021-06-21 | Battery cell, battery system and electric automobile |
| CN202121386385.1U Active CN215451516U (en) | 2020-09-29 | 2021-06-21 | Battery cell, battery system and electric automobile |
| CN202121382894.7U Active CN215451514U (en) | 2020-09-29 | 2021-06-21 | Battery cell, battery system and electric automobile |
| CN202110790099.XA Active CN113471555B (en) | 2020-09-29 | 2021-07-13 | Intelligent battery cell, battery system and electric automobile |
| CN202110902425.1A Active CN113594562B (en) | 2020-09-29 | 2021-08-06 | Battery cell, battery module, battery pack and electric automobile |
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| CN113594562A (en) | 2021-11-02 |
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| CN113471555A (en) | 2021-10-01 |
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| CN113300010A (en) | 2021-08-24 |
| CN113300010B (en) | 2023-04-07 |
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Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |
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