CN110086224B - Multi-intelligent-battery ad hoc network cooperative control system and method - Google Patents
Multi-intelligent-battery ad hoc network cooperative control system and method Download PDFInfo
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Abstract
The invention relates to a multi-intelligent-battery ad hoc network cooperative control system and method, belongs to the technical field of intelligent batteries, and solves the problem that a single standard battery in the prior art cannot meet the differentiated requirements of users. The system comprises: the intelligent battery charging system comprises a bus interface, a plurality of intelligent batteries and a total discharging interface; the bus interface is used for being connected with each intelligent battery respectively to realize communication among the intelligent batteries; the input end of the total discharge interface is respectively connected with each intelligent battery, and the output end of the total discharge interface is used for being connected with electric equipment and supplying power to the electric equipment; the plurality of intelligent batteries generate a control party and a controlled party from an ad hoc network; and the control party controls the controlled party and cooperatively outputs the power supply required by the electric equipment. The self-networking of single standard battery can be utilized, the power supply required by the electric equipment is cooperatively output, the differentiation requirement of a user is met, and the operation cost of the shared battery is effectively reduced.
Description
Technical Field
The invention relates to the technical field of intelligent batteries, in particular to a multi-intelligent-battery ad hoc network cooperative control system and method.
Background
In some electric devices, in particular electric bicycles, a plurality of cells connected in parallel/in series are used in large numbers. There are different demands for the capacity, volume, weight, etc. of the battery by different users. Some users expect high capacity and long endurance, and some users expect the battery to be light and easy to replace. For the differentiated requirements of different users, the previous solutions provide batteries with different capacities for different users. This results in a large number of battery types, and non-uniform capacity and size.
For the service mode of providing the shared power battery, if batteries with different capacities are provided according to different requirements of users, the flowing complexity of the shared battery is increased, the operation cost of the shared battery is increased, errors are easy to occur during manual treatment, and inconvenience in use and potential safety hazards are caused to the users; if a battery with a uniform standard is provided, differentiation requirements of different users cannot be met.
Disclosure of Invention
In view of the foregoing analysis, the present invention aims to provide a multi-intelligent-battery ad hoc network cooperative control system and method, so as to solve the problem that a battery with a single standard cannot meet the differentiated requirements of users.
The purpose of the invention is mainly realized by the following technical scheme:
a multi-intelligent-battery ad hoc network cooperative control system is characterized by comprising: the intelligent battery charging system comprises a bus interface, a plurality of intelligent batteries and a total discharging interface; wherein the content of the first and second substances,
the bus interface is used for being connected with each intelligent battery respectively to realize communication among the intelligent batteries;
the input end of the total discharge interface is respectively connected with each intelligent battery, and the output end of the total discharge interface is used for being connected with electric equipment and supplying power to the electric equipment;
the plurality of intelligent batteries generate a control party and a controlled party from an ad hoc network; and the control party controls the controlled party and cooperatively outputs the power supply required by the electric equipment.
On the basis of the scheme, the invention is further improved as follows:
further, the intelligent battery comprises a battery cell, a charging and discharging unit, a charging and discharging interface, a control unit and a communication interface; the battery core, the charging and discharging unit and the charging and discharging interface are sequentially connected; the normal state of the charge and discharge unit is a discharge state allowing through a charge and discharge interface;
the control method controls the controlled party to cooperatively output the power supply required by the electric equipment, and comprises the following steps:
the control unit of the control party intelligent battery collects the state information of each intelligent battery, determines the controlled party intelligent battery participating in discharging according to the state information, and sends a control instruction for forbidding discharging to the control unit of the controlled party intelligent battery not participating in discharging;
the control unit of the controlled intelligent battery which does not participate in discharging receives the control instruction for prohibiting discharging; and responding to the control instruction for forbidding discharging, the charging and discharging unit of the intelligent battery is in a state of forbidding discharging through a charging and discharging interface, and the control result is fed back to the intelligent battery of the controller.
Further, the state information of the smart battery includes: voltage, battery current, temperature information of the intelligent battery;
the controller intelligent battery determines the controlled intelligent battery participating in discharging through the state information of the intelligent battery, and the method comprises the following steps:
the control party intelligent battery collects voltage, battery current and temperature information of each intelligent battery, screens out intelligent batteries which are not suitable for discharging temporarily, and switches the intelligent battery charging and discharging units which are not suitable for discharging temporarily to a state of forbidding discharging through a charging and discharging interface;
all the rest intelligent batteries participate in discharging;
and the control party intelligent battery repeats the screening process at fixed time intervals, and when the intelligent battery which is not suitable for discharging temporarily is updated, the rest intelligent batteries after updating are all used for discharging.
Further, the smart battery that is temporarily not suitable for discharging includes:
temperature higher than ThThe smart battery of (1); t ishAnd the upper limit of the discharge temperature of the intelligent battery is.
Further, the remaining smart battery discharging process includes:
when the total discharge interface is connected with the electric equipment, the electric equipment is supplied with power through one or more intelligent batteries with the highest total voltage of the battery cores.
Further, the intelligent battery also comprises a current sensor, and the current sensor is used for detecting the current of the battery in real time;
the normal state of the charge and discharge unit of the intelligent battery further comprises: a state of being unable to charge the battery cell;
the control unit further executes the following procedures to control the charging and discharging unit to be switched to a state of charging the battery cell or a state of not charging the battery cell:
when the battery current I is detected to be more than or equal to IonThe control unit controls the charging and discharging unit to be switched to a state capable of charging the battery cell, clears the timer T and returns to detect the battery powerStream I;
when the battery current I is detectedchg＜I＜IonThen, further judging whether I is less than or equal to Ioff：
When I > IoffWhen the current is detected, clearing the timer T and returning to detect the battery current I;
when I is less than or equal to IoffTime, read timer T:
when T is more than or equal to ToffThe control unit controls the charging and discharging unit to be switched to a state incapable of charging the battery cell, and returns to detect the current I of the battery;
when T is less than ToffReturning to detect the battery current I;
when the battery current I is less than or equal to IchgThe control unit controls the charging switch to be switched off and returns to detect the current I of the battery;
wherein, IonIndicating the charging switch on-current in an unauthorized state; i isoffIndicating the charging switch off current in an unauthorized state; t isoffIndicating the turn-off delay of the charging switch in an unauthorized state.
Further, the voltage, battery current, the temperature information of each intelligent battery are gathered to control side intelligence battery, include:
the control unit of the control party intelligent battery sends a control instruction for acquiring total voltage of a battery core, battery current and intelligent battery temperature to the control unit of the controlled party intelligent battery;
and the control unit of the controlled intelligent battery receives the control instruction for acquiring the total voltage of the battery core, the current of the battery and the temperature of the intelligent battery, responds to the control instruction to acquire the total voltage of the battery core, the current of the battery and the temperature of the intelligent battery, and feeds back the acquisition result to the controlled intelligent battery.
Further, the intelligent battery also comprises a voltage sensor and a temperature sensor;
and responding to the control instruction, acquiring the total voltage of the battery cell through the voltage sensor, and acquiring the temperature of the intelligent battery through the temperature sensor.
Further, the controlling party and the controlled party are generated by:
each intelligent battery in the ad hoc network broadcasts the identity ID thereof to the ad hoc network through a bus interface;
the control unit of each intelligent battery receives the identity IDs of other intelligent batteries in the ad hoc network, compares the identity IDs with the identity ID of the intelligent battery, takes the intelligent battery with the smallest identity ID value as a control party and generates a control party ID;
and the controller intelligent battery distributes temporary short ID for the controlled intelligent battery, and the temporary short ID is used for identifying the identity of the controlled party in the ad hoc network.
And the identity ID of the intelligent battery is a unique identity set when the battery leaves a factory.
The invention also discloses a multi-intelligent-battery ad hoc network cooperative control method which is arranged corresponding to the multi-intelligent-battery ad hoc network cooperative control system and comprises the following steps:
respectively connecting a plurality of intelligent batteries with a bus interface and a total discharge interface, wherein the plurality of intelligent batteries generate a controller and a controlled party through an ad hoc network;
and the control party controls the controlled party and cooperatively outputs the power supply required by the electric equipment.
The invention has the following beneficial effects: the multi-intelligent-battery ad hoc network cooperative control system and the method thereof can utilize the ad hoc network of a single standard battery to cooperatively output the power supply required by the electric equipment, meet the differentiation requirements of users, and effectively reduce the operation cost of the shared battery; simultaneously, still possess following advantage:
1. the running distance of the electric vehicle is multiplied;
2. the internal resistance of the battery is reduced, and under the condition of reducing the voltage of the battery, a larger current is still provided, so that the riding experience is improved;
3. the single battery has low cost, light weight and convenient carrying and replacement;
4. a low power charger may be used;
5. flexible combination and adaptation to different user requirements.
6. The intelligent battery can also realize limited charging under the unauthorized condition, and the application range of the technical scheme of the invention is expanded.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
Fig. 1 is a schematic diagram of a multi-intelligent-battery ad hoc network cooperative control system in an embodiment of the present invention;
FIG. 2 is a flowchart of a method for generating a controlling party and a controlled party in an ad hoc network according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a single smart battery in an embodiment of the present invention;
fig. 4 is a flow chart of a control strategy of a single intelligent battery control unit in an embodiment of the invention.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
In a specific embodiment of the present invention, a system for cooperative control of a plurality of intelligent battery ad hoc networks is disclosed, a schematic diagram of which is shown in fig. 1, and the system includes: the intelligent battery charging system comprises a bus interface, a plurality of intelligent batteries and a total discharging interface; wherein the content of the first and second substances,
the bus interface is used for being connected with each intelligent battery respectively to realize communication among the intelligent batteries;
the input end of the total discharge interface is respectively connected with each intelligent battery, and the output end of the total discharge interface is used for being connected with electric equipment and supplying power to the electric equipment;
a plurality of the intelligent batteries, an ad hoc network generation controller and a controlled party; and the control party controls the controlled party and cooperatively outputs the power supply required by the electric equipment.
When the intelligent battery self-organizing control system is used specifically, the electric equipment is connected with the total discharge interface, the intelligent battery self-organizing networks generate a control party through competition, and other batteries are used as controlled parties and controlled by the control party; the control party controls whether the controlled intelligent battery participates in discharging according to the battery state, so that different power supplies with different requirements are provided for the electric equipment with different powers.
Compared with the prior art, the multi-intelligent-battery ad hoc network cooperative control system provided by the invention can utilize the ad hoc network of a single standard battery to cooperatively output the power supply required by the electric equipment, thereby meeting the differentiation requirements of users and effectively reducing the operation cost of shared batteries.
Specifically, the bus interface includes a plurality of bus interface sub-nodes, and each bus interface sub-node is correspondingly connected to a communication interface of the intelligent battery, so as to implement communication between different intelligent batteries; the total discharging interface comprises a plurality of input ports and an output port, and each input port of the total discharging interface is correspondingly connected with the charging and discharging electrical interface of one intelligent battery.
Preferably, the bus is a CAN bus, and all the intelligent batteries are hung on the CAN bus.
After the intelligent battery is self-organized, a control party and a controlled party are generated through competition, and the generation modes of the control party and the controlled party are many, the invention particularly provides a method for generating the control party and the controlled party, a flow chart is shown in fig. 2, and the steps are as follows:
step S1.1: each intelligent battery in the ad hoc network broadcasts the identity ID thereof to the ad hoc network through a bus interface;
step S1.2: the control unit of each intelligent battery receives the identity IDs of other intelligent batteries in the ad hoc network, compares the identity IDs with the identity ID of the intelligent battery, takes the intelligent battery with the smallest identity ID value as a control party and generates a control party ID;
step S1.3: and the controller intelligent battery distributes temporary short ID for the controlled intelligent battery, and the temporary short ID is used for identifying the identity of the controlled party in the ad hoc network.
When a new intelligent battery is added into the ad hoc network and a control party already exists, the newly added intelligent battery is automatically used as a controlled party;
when the intelligent battery of the control party exits the ad hoc network, repeating the steps S1.1-S1.3;
after the intelligent battery of the controller sends a control instruction, if the intelligent battery of the controller does not receive the response of any controlled party within a certain time, the self-organized network disappears, the controller restores the working state of the single body and automatically clears the ID of the controller;
and after the controlled intelligent battery exits the ad hoc network, the temporary short ID is automatically cleared.
The identity ID of the intelligent battery is a unique identity identifier which is set when the battery leaves a factory and is in a 32-bit 2-system, the temporary short ID is an ID which is temporarily distributed by a controller after the ad hoc network and is used for identifying the identity of a controlled party in the ad hoc network, the number of bytes of the ID is less than that of the identity ID of the intelligent battery, and communication cost can be effectively saved.
Preferably, the intelligent battery comprises a battery cell, a charging and discharging unit, a charging and discharging interface, a control unit and a communication unit; the battery core, the charging and discharging unit and the charging and discharging interface are sequentially connected; the normal state of the charge and discharge unit is a state allowing discharge through a charge and discharge interface;
preferably, the controlling party controls the controlled party to cooperatively output the power required by the electric device, and the method includes:
the control unit of the control party intelligent battery collects the state information of each intelligent battery, determines the controlled party intelligent battery participating in discharging according to the state information, and sends a control instruction for forbidding discharging to the control unit of the controlled party intelligent battery not participating in discharging;
the control unit of the controlled intelligent battery which does not participate in discharging receives the control instruction for prohibiting discharging; and responding to the control instruction for forbidding discharging, the charging and discharging unit of the intelligent battery is in a state of forbidding discharging through a charging and discharging interface, and the control result is fed back to the intelligent battery of the controller. In order to ensure that the intelligent battery can normally discharge to the electric equipment in the working state of the single battery, the normal state of a charge-discharge interface in the intelligent battery is a discharge state capable of passing through the charge-discharge interface; therefore, the control-side intelligent batteries need to prohibit discharging of some intelligent batteries through control instructions, and utilize the remaining intelligent batteries to cooperatively output power required by the electric equipment.
In order to better realize the purpose of cooperative control, the invention also provides a specific control mode of the intelligent battery, which comprises the following steps:
preferably, the state information of the smart battery includes: voltage, battery current, temperature information of the intelligent battery;
the controller intelligent battery determines a controlled intelligent battery participating in discharging through the state information, and the method comprises the following steps:
step S2.1: the control party intelligent battery collects voltage and temperature information of each intelligent battery, screens out the intelligent batteries which are not suitable for discharging temporarily, and switches the intelligent battery charging and discharging units which are not suitable for discharging temporarily to a state of forbidding discharging through a charging and discharging interface;
wherein the smart battery that is temporarily unsuited for discharge comprises:
temperature above ThThe smart battery of (1); t ishDefining an upper discharge temperature limit of the intelligent battery;
when the battery temperature is high, discharge is temporarily not suitable, and therefore, the temperature can be made higher than ThThe battery of (4), screened as a battery temporarily unsuitable for discharge;
for example, cells with a temperature above 50 degrees are screened for cells that are temporarily unsuitable for discharge.
The state of whether all the batteries are involved in the discharge may change after repeating step S2.1 each time;
step S2.2: and (3) all the rest intelligent batteries participate in discharging, wherein the specific discharging mode is as follows: when the total discharge interface is connected with electric equipment, supplying power to the electric equipment through one or more intelligent batteries with the highest total voltage of the battery cores in the rest intelligent batteries; the control party intelligent battery operates the ad hoc network battery as follows:
the control party intelligent battery measures the voltage, V, of all N batteries participating in discharging1，V2，…，VNCalculating the maximum voltage value VmaxCalculate VlowValue of (A), Vlow＝Vmax-Vdif. Wherein, VdifThe battery discharge dynamic state monitoring method is related to the internal resistance and real-time voltage of the intelligent battery, and can be a fixed value set according to the battery characteristics or a calculated value in the battery discharge dynamic process. The value of the turn-on voltage being higher than VlowThe discharge switch of the battery of (1) turns off the discharge switches of the other batteries; if there are multiple voltage values greater than VlowThe battery of (1) turning on all the discharge switches of the corresponding batteries; the following operations are then performed:
the intelligent battery of the control party measures the current of all batteries participating in discharging and calculates the sum I of all the currents participating in dischargingTOTAL；
1) In the case of a battery participating in discharge, if the current value I of the battery X is larger than the current value IX>IONTimer T for turning on charge switch of battery X and clearing battery XX(ii) a (X represents any one of the batteries participating in the discharge);
2) battery charging switch on, comparison IXAnd IOFF，TXAnd Toff；
i. If IX>IOFFTimer T for clearing battery XX；
if IX<＝IOFF，TX<ToffReturning to the step S2.2;
if IX<＝IOFF，TX>＝ToffThe charging switch of the battery X is cut off, and the step S2.2 is returned;
3) in ITOTALCase 0 (no load on the battery network);
i. if the current I of the battery XX<0, indicating that the battery X is being charged and the batteries are in mutual charging, the discharge switch of the X battery should be cut off to prevent the batteries from being charged, if a plurality of similar batteries X exist, the charge switch is cut off allReturning to the step S2.2;
if the current values of all the batteries are all equal to 0, indicating that the battery network has no charging and discharging actions, and returning to the step S2.2;
4) in ITOTAL>In case 0 (indicating that the battery network is discharging to the consumer):
a) if the current value of the battery X, IX<0 (indicating that the battery X is charged by other batteries), the charging switch of the battery X is cut off, and the mutual charging between the batteries is stopped;
b) current value of any battery, IX>IONSwitching on an X battery charging switch;
timer T for clearing battery Xx(ii) a After the battery of the charging switch is switched on and the following judgment is continuously carried out in the subsequent process, the step S2.2 is skipped to:
i. if IX>IOFFTimer T for clearing battery Xx；
if IX<＝IOFF，Tx＜ToffReturning to the step S2.2;
if IX<＝IOFF，Tx≥ToffThe charging switch of the battery X is cut off, and the step S2.2 is returned;
if IX>＝IMAX,(IMAXDefined as the maximum allowable discharge current of the battery), the discharge switch of the battery X is cut off, and the battery is protected:
5) in ITOTAL<0 (indicating that the external device has a phenomenon of charging the battery);
a) if the current of cell X, IX>0, the battery X still discharges, the discharging current is not output to the electric equipment, but other batteries are charged, and the discharging switch of the battery X is disconnected;
b) if the current of cell X, IX<IchgWhen the battery charging current is larger than the maximum allowable charging current, the charging switch of the battery X is switched off;
c) if the current of cell X, Ichg<IX<0, the battery is described inTimer T for charging and checking battery Xx；
i.Tx<ToffReturning to the step S2.2;
ii.Tx>＝Toffthe charging switch of the battery X is cut off, and the step S2.2 is returned;
step S3: and the control party intelligent battery repeats the step S2.1 at fixed time intervals, and when the intelligent battery which is not suitable for discharging temporarily is updated, the step S2.2 is repeated.
The intelligent battery which participates in discharging is subjected to discharging control by the control party, so that the discharging process of the battery can be effectively managed, mutual charging actions among the batteries are prevented in time, different requirements of different users are met, and the use range of the intelligent battery is expanded.
Specifically, when all the intelligent battery charging and discharging units in the ad hoc network are in a discharging state which is forbidden to pass through the charging and discharging interface, the controller intelligent battery switches all the intelligent battery charging and discharging units to a discharging state which is allowed to pass through the charging and discharging interface.
In the process of supplying power to the electric equipment through 1 or more intelligent batteries in the step S2.2, if voltages among the multiple batteries are inconsistent or the electric equipment reversely supplies power to the batteries, the problem that the intelligent batteries are charged under an unauthorized condition exists. In order to prevent the illegal reverse charging of the single intelligent battery, the following settings are also carried out on the single intelligent battery:
the intelligent battery also comprises a current sensor, and the current sensor is used for detecting the current of the battery in real time; the schematic structural diagram of the intelligent battery is shown in fig. 4. The normal state of the charge and discharge unit of the intelligent battery further comprises: a state of being unable to charge the battery cell; the control unit further executes the following procedures to control the charging and discharging unit to be switched to a state of charging the battery cell or a state of not charging the battery cell:
when the battery current I is detected to be more than or equal to IonThe control unit controls the charging and discharging unit to be switched to a state capable of charging the battery cell, clears the timer T and returns to detect the battery current I;
when the battery current I is detectedchg＜I＜IonThen, further judging whether I is less than or equal to Ioff：
When I > IoffWhen the current is detected, clearing the timer T and returning to detect the battery current I;
when I is less than or equal to IoffTime, read timer T:
when T is more than or equal to ToffThe control unit controls the charging and discharging unit to be switched to a state incapable of charging the battery cell, and returns to detect the current I of the battery;
when T is less than ToffReturning to detect the battery current I;
when the battery current I is less than or equal to IchgThe control unit controls the charging switch to be switched off and returns to detect the current I of the battery;
wherein, IonIndicating the charging switch on-current in an unauthorized state; i isoffIndicating the charging switch off current in an unauthorized state; t isoffIndicating the turn-off delay of the charging switch in an unauthorized state.
Through the arrangement, the control unit can control the unauthorized charging, and the unauthorized charging time is limited to ToffIn addition, the battery loss caused by mutual charging among the batteries is avoided; meanwhile, in practical application, the ad hoc network cooperative control can be realized by providing a single standard battery, and the operation cost of the shared battery is effectively reduced.
When the intelligent battery is adopted, when the control party fails, the discharging process of the intelligent batteries can be still realized under the uncontrolled condition: the description is as follows:
step S01: when the total discharge interface is vacant, the charging current of any battery is found, the charging switch of the battery is cut off immediately, and the charging and discharging units of the intelligent batteries are all in a state of being incapable of charging to the battery cell; the intelligent batteries cannot be charged and discharged mutually;
step S02: when the total discharge interface is connected with the electric equipment, the electric equipment is supplied with power through one or more intelligent batteries with the highest total voltage of the battery cores; when the battery current I of the intelligent battery is detected to be more than or equal to IonThe control unit controlsSwitching the charging and discharging unit to a state capable of charging the battery cell;
step S03: when two or more intelligent batteries are in a state of being capable of charging the battery cell and the electric equipment is disconnected or the load is reduced, the intelligent battery with the highest battery cell voltage in the two or more intelligent batteries carries out limited charging on other intelligent batteries in the state of being capable of charging the battery cell.
The charging process among all intelligent batteries can be carried out by referring to the control logic of a single intelligent battery control unit, and the process shows that the bulletproof process of multiple intelligent batteries can be still realized when a control party fails, and the mutual charging action among the batteries can be prevented timely and quickly; as can be seen from the above analysis of a single smart battery, the charging time does not exceed ToffCharging current not higher than IoffAnd therefore only limited charging is possible.
It should be noted that: the charging and discharging unit can realize charging and discharging; for charging: under the control of the control unit, the switching between a state of charging the battery cell and a state of not charging the battery cell can be realized; for the discharge: under the control of the control unit, switching between a state allowing discharge through the charge-discharge interface or a state prohibiting discharge through the charge-discharge interface can be achieved. The two are not contradictory.
Preferably, the charge and discharge unit comprises a discharge switch, a charge switch, a diode D1 and a diode D2, the discharge switch and the charge switch are connected in series in the loop, and the diode D1 is connected in parallel to the two ends of the charge switch in the forward direction; the diode D2 is connected in reverse parallel at two ends of the discharge switch; the control unit switches the charging and discharging unit to a discharging state allowing the charging and discharging interface to be allowed or a discharging state forbidding the charging and discharging interface to be allowed through controlling the on-off of the discharging switch.
When the discharge switch is switched on, the charge and discharge unit is in a discharge state allowing the charge and discharge interface to be passed; when the discharge switch is turned off, the charge and discharge unit is in a state of prohibiting discharge through the charge and discharge interface.
When the charging switch is switched on, the charging and discharging unit is in a state of being capable of charging the battery cell; when the charging switch is switched off, the charging and discharging unit is in a state of being incapable of charging the battery cell.
The discharging switch is a normally-on switch, and the charging switch is a normally-off switch.
The control unit controls the on-off of the charging switch to switch the charging and discharging unit to a state of charging the battery cell or a state of not charging the battery cell in the following manner, and the schematic flow diagram is shown in fig. 4:
the control unit detects the battery current I in real time and keeps timing through a built-in timer T:
when the battery current I is detected to be more than or equal to IonThe control unit controls to switch on the charging switch, clear the timer T and return to detect the battery current I;
when the battery current I < I is detectedonThen, further judging whether I is less than or equal to Ioff：
When I > IoffWhen the current is detected, clearing the timer T and returning to detect the battery current I;
when I is less than or equal to IoffTime, read timer T:
when T is more than or equal to ToffThe control unit controls the charging switch to be switched off and returns to detect the current I of the battery;
when T is less than ToffReturning to detect the battery current I;
when the battery current I is less than or equal to IchgAnd the control unit controls the charging switch to be switched off and returns to detect the battery current I.
Preferably, the control party intelligent battery collects voltage, battery current and temperature information of each intelligent battery in the following ways:
the control unit of the control party intelligent battery sends a control instruction for acquiring total voltage of a battery core, battery current and intelligent battery temperature to the control unit of the controlled party intelligent battery;
and the control unit of the controlled intelligent battery receives the control instruction for acquiring the total voltage of the battery core, the current of the battery and the temperature of the intelligent battery, responds to the control instruction to acquire the total voltage of the battery core, the current of the battery and the temperature of the intelligent battery, and feeds back the acquisition result to the controlled intelligent battery.
Preferably, the smart battery further comprises a voltage sensor and a temperature sensor; and responding to the control instruction, acquiring the total voltage of the battery cell through the voltage sensor, and acquiring the temperature of the intelligent battery through the temperature sensor.
By adopting the multi-intelligent-battery ad hoc network cooperative control, the following advantages can be brought:
1. the running distance of the electric vehicle is multiplied;
2. the internal resistance of the battery is reduced, and under the condition of reducing the voltage of the battery, a larger current is still provided, so that the riding experience is improved;
3. the single battery has low cost, light weight and convenient carrying and replacement;
4. a low power charger may be used;
5. flexible combination and adaptation to different user requirements.
In another embodiment of the present invention, a method for cooperative control of a multi-intelligent-battery ad hoc network is further provided, where the method is set corresponding to the cooperative control of the multi-intelligent-battery ad hoc network, and includes the following steps:
step S1: respectively connecting a plurality of intelligent batteries with a bus interface and a total discharge interface, wherein the plurality of intelligent batteries generate a controller and a controlled party through an ad hoc network;
step S2: and the control party controls the controlled party and cooperatively outputs the power supply required by the electric equipment.
The system embodiment and the method embodiment are based on the same principle, and the related parts can be referenced mutually, and the same technical effect can be achieved.
Those skilled in the art will appreciate that all or part of the flow of the method implementing the above embodiments may be implemented by a computer program, which is stored in a computer readable storage medium, to instruct related hardware. The computer readable storage medium is a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (8)
1. A multi-intelligent-battery ad hoc network cooperative control system is characterized by comprising: the intelligent battery charging system comprises a bus interface, a plurality of intelligent batteries and a total discharging interface; wherein the content of the first and second substances,
the bus interface is used for being connected with each intelligent battery respectively to realize communication among the intelligent batteries;
the input end of the total discharge interface is respectively connected with each intelligent battery, and the output end of the total discharge interface is used for being connected with electric equipment and supplying power to the electric equipment;
the plurality of intelligent batteries generate a control party and a controlled party from an ad hoc network; the control party controls the controlled party and cooperatively outputs a power supply required by the electric equipment;
the intelligent battery comprises a battery cell, a charging and discharging unit, a charging and discharging interface, a control unit and a communication interface; the battery core, the charging and discharging unit and the charging and discharging interface are sequentially connected; the normal state of the charge and discharge unit is a discharge state allowing through a charge and discharge interface;
the control method controls the controlled party to cooperatively output the power supply required by the electric equipment, and comprises the following steps:
the control unit of the control party intelligent battery collects the state information of each intelligent battery, determines the controlled party intelligent battery participating in discharging according to the state information, and sends a control instruction for forbidding discharging to the control unit of the controlled party intelligent battery not participating in discharging;
the control unit of the controlled intelligent battery which does not participate in discharging receives the control instruction for prohibiting discharging; responding to the control instruction for forbidding discharging, enabling the charging and discharging unit of the intelligent battery to be in a state of forbidding discharging through a charging and discharging interface, and feeding back a control result to the intelligent battery of the control party;
the intelligent battery also comprises a current sensor, and the current sensor is used for detecting the current of the battery in real time;
the normal state of the charge and discharge unit of the intelligent battery further comprises: a state of being unable to charge the battery cell;
the control unit further executes the following procedures to control the charging and discharging unit to be switched to a state of charging the battery cell or a state of not charging the battery cell:
when the battery current I is detected to be more than or equal to IonThe control unit controls the charging and discharging unit to be switched to a state capable of charging the battery cell, clears the timer T and returns to detect the battery current I;
when the battery current I is detectedchg＜I＜IonThen, further judging whether I is less than or equal to Ioff：
When I > IoffWhen the current is detected, clearing the timer T and returning to detect the battery current I;
when I is less than or equal to IoffTime, read timer T:
when T is more than or equal to ToffThe control unit controls the charging and discharging unit to be switched to a state incapable of charging the battery cell, and returns to detect the current I of the battery;
when T is less than ToffReturning to detect the battery current I;
when the battery current I is less than or equal to IchgThe control unit controls the charging switch to be switched off and returns to detect the current I of the battery;
wherein, IonIndicating the charging switch on-current in an unauthorized state; i isoffIndicating the charging switch off current in an unauthorized state; t isoffIndicating the turn-off delay of the charging switch in an unauthorized state; i ischgRepresents the maximum allowed charging current in the unauthorized state and is negative.
2. The control system of claim 1, wherein the state information of the smart battery comprises: voltage, battery current, temperature information of the intelligent battery;
the controller intelligent battery determines the controlled intelligent battery participating in discharging through the state information of the intelligent battery, and the method comprises the following steps:
the control party intelligent battery collects voltage, battery current and temperature information of each intelligent battery, screens out intelligent batteries which are not suitable for discharging temporarily, and switches the intelligent battery charging and discharging units which are not suitable for discharging temporarily to a state of forbidding discharging through a charging and discharging interface;
the rest intelligent batteries are all involved in discharging;
and the control party intelligent battery repeats the screening process at fixed time intervals, and when the intelligent battery which is not suitable for discharging temporarily is updated, the rest intelligent batteries after updating are all used for discharging.
3. The control system of claim 2, wherein the smart battery that is temporarily not suitable for discharge comprises:
temperature higher than ThThe smart battery of (1); t ishAnd the discharge temperature upper limit of the intelligent battery is set.
4. The control system of claim 2, wherein the remaining smart battery discharge process comprises:
when the total discharge interface is connected with the electric equipment, the electric equipment is supplied with power through one or more intelligent batteries with the highest total voltage of the battery cores.
5. The control system of claim 4, wherein the controller smart battery collects voltage, battery current, temperature information for each smart battery, comprising:
the control unit of the control party intelligent battery sends a control instruction for acquiring total voltage of a battery core, battery current and intelligent battery temperature to the control unit of the controlled party intelligent battery;
and the control unit of the controlled intelligent battery receives the control instruction for acquiring the total voltage of the battery core, the current of the battery and the temperature of the intelligent battery, responds to the control instruction to acquire the total voltage of the battery core, the current of the battery and the temperature of the intelligent battery, and feeds back the acquisition result to the controlled intelligent battery.
6. The control system of claim 5, wherein the smart battery further comprises a voltage sensor, a temperature sensor;
and responding to the control instruction, acquiring the total voltage of the battery cell through the voltage sensor, and acquiring the temperature of the intelligent battery through the temperature sensor.
7. The control system of claim 1, wherein the controller and the controlled party are generated by:
each intelligent battery in the ad hoc network broadcasts the identity ID thereof to the ad hoc network through a bus interface;
the control unit of each intelligent battery receives the identity IDs of other intelligent batteries in the ad hoc network, compares the identity IDs with the identity ID of the intelligent battery, takes the intelligent battery with the smallest identity ID value as a control party and generates a control party ID;
the control party intelligent battery distributes temporary short ID for the controlled party intelligent battery, and the temporary short ID is used for identifying the identity of the controlled party in the ad hoc network;
and the identity ID of the intelligent battery is a unique identity set when the battery leaves a factory.
8. A multi-intelligent-battery ad hoc network cooperative control method is characterized in that the method is arranged corresponding to the multi-intelligent-battery ad hoc network cooperative control system of any one of claims 1 to 7, and comprises the following steps:
respectively connecting a plurality of intelligent batteries with a bus interface and a total discharge interface, wherein the plurality of intelligent batteries generate a controller and a controlled party through an ad hoc network;
and the control party controls the controlled party and cooperatively outputs the power supply required by the electric equipment.
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| CN104104118A (en) * | 2013-04-03 | 2014-10-15 | 力博特公司 | Intelligent battery connection system and related control method |
| CN105990865A (en) * | 2015-02-06 | 2016-10-05 | 中兴通讯股份有限公司 | Storage battery device, and charging-discharging monitoring method, device and system thereof |
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