CN103532203A - Battery pack application node as well as matrix battery management system and implementation method thereof - Google Patents
Battery pack application node as well as matrix battery management system and implementation method thereof Download PDFInfo
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- CN103532203A CN103532203A CN201310528690.3A CN201310528690A CN103532203A CN 103532203 A CN103532203 A CN 103532203A CN 201310528690 A CN201310528690 A CN 201310528690A CN 103532203 A CN103532203 A CN 103532203A
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Abstract
The invention provides a battery pack application node as well as a matrix battery management system and an implementation method thereof. The node is a circuit board comprising a first switch, a second switch and a third switch connected by circuits; five connection points are arranged on the circuit board; the four connection points A, B, C and D are single connection points used for being connected with power circuits; the connection point Z is a combined connection point used for being connected with a communication bus and selectively connected with a sensor; single batteries are connected to the two sides of a middle node of the matrix battery management system respectively; the first connection point of the battery pack application node is connected with an anode of the single battery at the left end; the second connection point of the battery pack application node is connected with a cathode of the single battery at the right end; the fifth connection point of the battery pack application node is connected with a main controller circuit through the communication bus; the operations of parallel or combined charging and combined discharging are performed by uniformly switching the three switches of the node; when a battery pack comprises multiple groups of tandem groups, any tandem group can be charged, discharged and disconnected by flexibly controlling the states of the nodes.
Description
Technical field
Extensive battery set management application in the present invention relates to, especially a kind of battery pack application node and matrix battery management system and implementation method.
Background technology
Battery pack is applied very extensive in our daily life, little to TV remote controller, electronic toy and, flashlight all needs to use battery pack to electric automobile, bank's stand-by power supply, communications equipment room, radar station and broadcasting and TV machine room etc. greatly.Yet, along with in the application of extensive battery pack the drawback of existing battery management system is displayed.
In battery pack, difference between monomer always exists, take capacity as example, its otherness is tending towards disappearing never, but progressively worsen, in battery pack, flow through same electric current, comparatively speaking, the large person of capacity always in relatively low current shallow fill shallow put, be tending towards capacity attenuation slowly, life, and the little person of capacity always in relatively large electric current super-charge super-discharge, be tending towards that capacity attenuation is accelerated, the lost of life, performance parameter difference is increasing between the two, forms positive feedback characteristic, low capacity lost efficacy in advance, caused the battery pack lost of life.
Visible, connected mode in parallel after no matter battery pack adopts first rear series connection in parallel still first to connect, capital relates to following problem: for the connection of series system, present stage cannot be carried out Current Control to each series unit, thereby while having charged, can not guarantee that each series unit reaches full state, and battery pack total capacity determines the series unit by capacity minimum, this directly affects task performance and the useful life of whole battery pack.And for the use problem after the battery pack lost of life, present stage also only has the battery pack by more renewing to solve, this has inevitably increased use cost.
Matrix battery pack carries out rectangular layout to battery pack, in the patent application document of application number 200910096144.0,201010161351.2,201210136094.6, respectively the performance of battery pack is optimized, but above-mentioned technical problem still cannot be well solved.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of battery pack application node.
Another technical problem to be solved by this invention is to provide the matrix battery management system with above-mentioned battery pack application node.
Another technical problem to be solved by this invention is to provide the implementation method discharging and recharging of above-mentioned matrix battery management system.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of battery pack application node, by the first switch (K1), the circuit board that second switch (K2) and the 3rd switch (K3) connection form, on this circuit board, be provided with five tie points, the first tie point (A) wherein, the second tie point (B), the 3rd tie point (D), the 4th tie point (C) is single contact, be used for connecting power line, the 5th tie point (Z) is composite contact, for connecting communication bus and selectivity connecting sensor, described the first tie point (A) and the second tie point (B) are arranged at described the first switch ends, be that described the first switch is for this first tie point of UNICOM and the second tie point, and then positive pole and the negative pole of the battery to be connected at its two ends, left and right of difference UNICOM, the 3rd tie point (D) is arranged at nearly second switch (K2) between the first tie point (A) and the second tie point (B), the first switch far away (K1) end, be that described second switch is for UNICOM's the 3rd tie point, and then the positive pole of UNICOM's charge power supply, the 4th tie point (C) is arranged at nearly the 3rd switch (K3) between the first tie point (A) and the second tie point (B), the first switch far away (K1) end, be that described the 3rd switch is for UNICOM's the 4th tie point, and then the negative pole of UNICOM's charge power supply, described the 5th tie point (Z) is arranged between described the second tie point (B) and the 3rd tie point (D).
Above-mentioned is battery pack application node foundation structure; can on this foundation structure, add measuring circuit with connecting sensor; described transducer is for realizing the protection of battery and the measurement of parameter (such as temperature, electric current, voltage etc.) in institute compass of competency; be preferably temperature sensor, described transducer control circuit is connected with the 5th tie point (Z).
The matrix battery management system with above-mentioned battery pack application node, comprise master controller, battery pack application node and battery cell, described battery pack application node both sides are connected with respectively battery cell, wherein first tie point (A) of this battery pack application node connects the positive pole of left end battery cell, its second tie point (B) connects the negative pole of right-hand member battery cell, and the 5th tie point (Z) of described battery pack application node is by communication bus and master controller communication.
Preferably, above-mentioned matrix battery management system, described battery cell can be that single battery can be also the battery pack being formed by single cell parallel.
Preferably, above-mentioned matrix battery management system, comprise that (described master controller is a kind of performance element that can actuating logic program for some series units that formed by battery cell and battery pack application node alternative arrangement, master controller, in this controller, be provided with single-chip microcomputer) and power supply, between described each series unit, be connected in parallel, each battery pack application node on each series unit all by its 5th tie point (Z) by communication bus and master controller connection.
Preferably, above-mentioned matrix battery management system, described power supply is variable output voltage power supply; The responsible whole battery system of described master controller links with external environment condition, and its major function comprises: voltage, the electric current of measuring battery system; Control the variable output direct-current switch power supply output voltage of (such as the SPV-300-SPEC of Taiwan MEANWELL brand, being later called for short power supply); By judgement externally fed situation, to switch battery system, link with load or power supply; The defencive functions such as short circuit, overload, reversal connection, under-voltage, overvoltage are provided; its inside is provided with for measuring the measuring circuit of the total voltage of whole battery system, electric current; with the control circuit that each series unit is controlled, provide the protective circuit of the defencive functions such as short circuit, overload, reversal connection, under-voltage, overvoltage.
Preferably, above-mentioned matrix battery management system, the output voltage that described master controller can be controlled charge power supply changes the requirement to charging voltage with matching battery system configuration.
The implementation method discharging and recharging of above-mentioned matrix battery management system, specific implementation step is as follows: 3 switches that switch above-mentioned all battery pack application nodes by unification are realized the operation of parallel connection or combined charging, combined discharge, while discharging: the first K switch 1 closure, second switch K2, the 3rd K switch 3 disconnect; During charging: the first K switch 1 disconnects, second switch K2, the 3rd K switch 3 closures, the operational data scanning of the instruction of described diverter switch and each battery pack application node has been sent instructions by under communication bus by master controller.
The implementation method discharging and recharging of above-mentioned matrix battery management system, specific implementation step is as follows:
Discharge process:
(1) master controller, by Web broadcast, notifies all nodes to be switched to discharge condition, and K1 is closed, and K2, K3 disconnect, and now whole battery system state switches complete;
(2) master controller scans the state of battery pack, comprises that voltage, electric current, temperature and/or node are abnormal, after definite battery pack is normal, connects load, supplying power for outside;
(3) state of master controller continuation scanning battery pack in power supply process, comprise that voltage, electric current, temperature and/or node are abnormal, and calculate its dump energy, the inefficacy that protection is provided and/or determines certain battery cell by the abnormal scanning of node by measuring temperature and electric current by measuring battery voltage;
(4) when master controller measures battery voltage when too low, show that battery pack needs charging, now master controller will cut off load, wait to be charged;
Charging process:
(1) master controller detects charge power supply after exact connect ion, measures the open circuit voltage of whole battery system, if open circuit voltage is lower, illustrates that battery pack dump energy is less; Otherwise, illustrate that battery pack also has more dump energy.
(2) if can skip to following step (7) when dump energy is more or user wishes directly to carry out low pressure charged in parallel, otherwise high voltage and constant current charging in advance;
(3) the described high voltage and constant current charging process of step (2): master controller keeps the connection status of each battery pack application node in battery pack constant, measure the open circuit voltage of whole battery system and control an identical voltage of variable output voltage power supply output, now in circuit, there is no macroscopical current flowing;
(4) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, at power supply, progressively improve in the process of output voltage, charging current is also progressively promoting, when master controller detects charging current and reaches the preset charged electric current of battery pack, to keep the output voltage of power supply, now charging current tends towards stability;
(5) battery pack is in continuing charging process, and self voltage also can raise, because charging voltage is constant, and declines that fails to be convened for lack of a quorum of the charged electrical of battery pack, now, the output voltage that master controller can continue to promote power supply is stabilized in preset value with maintenance charging current;
(6) control procedure of above-mentioned steps (4), (5) and so forth, until the charging voltage of battery pack reaches a certain preset value, indicates that the high voltage and constant current charging process of this battery pack finishes;
(7) master controller will disconnect charge power supply, by Web broadcast, notify all battery pack application nodes to be switched to low pressure charged state, and K1 disconnects, and K2, K3 are closed, and now all battery cells are all connected in parallel, and prepare low pressure charged in parallel;
(8) low pressure charged in parallel process: master controller is measured the open circuit voltage of whole battery system and controlled an identical voltage of variable output voltage power supply output, now there is no macroscopical current flowing in circuit;
(9) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, at power supply, progressively improve in the process of output voltage, charging current is also progressively promoting, when master controller detects charging current and reaches the preset charged electric current of battery pack or reach power supply maximum output current, to keep the output voltage of power supply, now charging current tends towards stability;
(10) battery pack is in charging process, and self voltage also can raise, because charging voltage is constant, and the decline that fails to be convened for lack of a quorum of the charged electrical of battery pack, now, the output voltage that master controller can continue to promote power supply is to keep the stable of charging current;
(11) when charging voltage reaches the maximum permission charging voltage of whole batteries in parallel connection group, master controller no longer promotes supply voltage, and now, battery pack enters constant voltage charge state, enters after this state, and charging current will progressively reduce;
(12) when master controller detects charging current and is less than a certain preset value, can judge that battery system charging is complete, first master controller will disconnect charge power supply, then pass through Web broadcast, notify all nodes to be switched to discharge condition, be that K1 is closed, K2, K3 disconnect, and so far battery pack realizes again external electric discharge.
Preferably, the implementation method discharging and recharging of above-mentioned matrix battery management system, K2, K3 disconnect in advance in the step of described discharge process (1), confirm to disconnect errorless after closed K1 again.
Preferably, the implementation method discharging and recharging of above-mentioned matrix battery management system, K1 disconnects in advance in the step of described charging process (7), confirm to disconnect errorless after closed K2, K3 again.
The invention has the beneficial effects as follows:
Battery pack application node of the present invention is simple in structure, volume is small and exquisite, be easy to manufacture, all elements all can adopt solid-state electronic element, and reliability is very high, completely can be integrated with battery cell, can be intelligent battery with battery integration packaging, only need reserved simple communication interface, just can make the battery dispatching from the factory future with any configuration mode, accept the control of master controller, be very suitable for the needs that large-scale industrial is produced, the system architecture of described matrix battery management system is node-master controller, node can be integrated with battery cell, the production work of battery producer and the research and development manufacture work of battery management system are separately carried out, and this system can make each battery cell in matrix battery system be full of when charging process finishes simultaneously, really realized constant current-constant voltage-floating charge process of battery matrix, task performance and the useful life of whole battery pack have greatly been improved, when finding that indivedual battery cells break down, the battery cell that can easily remove and more renew, do not need whole battery pack to change, saved use cost.It should be noted that especially, when battery pack is when organizing series connection group more and formed, by controlling flexibly each node state, can realize the charging of any series connection group, electric discharge and opening operation, this means when a certain series connection group is discharged, another series connection group can be carried out charged in parallel simultaneously or be changed the operation of battery.
Accompanying drawing explanation
Fig. 1 is the line connecting relation schematic diagram of battery pack application node of the present invention (circuit board);
Fig. 2 is the line connecting relation schematic diagram of matrix battery management system of the present invention.
In figure: K1-the first K switch 2-second switch K3-the 3rd switch
A-first tie point B-the second tie point C-the 4th tie point
D-the 3rd tie point Z-the 5th tie point T-communication bus
Embodiment
In order to make those skilled in the art better understand technical scheme of the present invention, below in conjunction with the drawings and the specific embodiments (3 * 6 battery matrix system is example), technical scheme of the present invention is described in further detail.
Embodiment 1
As shown in Figure 1, described battery pack application node, by the first K switch 1, the circuit board that second switch K2 and the 3rd K switch 3 connections form, on this circuit board, be provided with five tie points, the first tie point A wherein, the second tie point B, the 3rd tie point D, the 4th tie point C is single contact, be used for connecting power line, the 5th tie point Z is composite contact, for connecting communication bus, described the first tie point A and the second tie point B are arranged at described the first switch ends, be that described the first K switch 1 is for this first tie point A of UNICOM and the second tie point B, and then positive pole and the negative pole of two batteries to be connected at its two ends, left and right of difference UNICOM, the 3rd tie point D is arranged at nearly second switch K2 between the first tie point A and the second tie point B, the first K switch 1 end far away, be that described second switch is for UNICOM's the 3rd tie point, and then the positive pole of UNICOM's charge power supply, the 4th tie point C is arranged at nearly the 3rd K switch 3 between the first tie point A and the second tie point B, the first K switch 1 end far away, be that described the 3rd switch is for the 4th tie point C of UNICOM, and then the negative pole of UNICOM's charge power supply, described the 5th tie point Z is arranged between described the second tie point B and the 3rd tie point D, for connecting communication bus T, and then carry out information interaction with master controller.
In addition; above-mentioned is battery pack application node; can on this foundation structure, add measuring circuit with connecting sensor; described transducer is for realizing the protection of battery and the measurement of parameter in institute compass of competency (such as temperature sensor; for overtemperature protection), described transducer control circuit is connected with the 5th tie point (Z).
The whole course of work is summarized as follows:
While using described battery pack application node, node has following tie point, respectively:
The first tie point A: connect left end anode;
The second tie point B: connect right-hand member battery cathode;
The 4th tie point C: connect charge power supply negative pole;
The 3rd tie point D: connect charge power supply anodal;
The 5th tie point Z: connecting communication bus T;
In node, there are 3 switches, respectively:
The first K switch 1: be responsible for the AB of UNICOM end, both left and right battery plus-negative plate;
Second switch K2: be responsible for the D of UNICOM end, charge power supply is anodal;
The 3rd K switch 3: be responsible for the C of UNICOM end, i.e. charge power supply negative pole.
During charging: the first K switch 1 disconnects, second switch K2, the 3rd K switch 3 closures;
During electric discharge: the first K switch 1 closure, second switch K2, the 3rd K switch 3 disconnect.
In addition, above-mentioned node is by Single-chip Controlling, can additional temp, detection and the defencive function such as voltage, electric current upload related data by communication bus T.
Embodiment 2
As shown in Figure 2, the matrix battery management system with battery pack application node described in embodiment 1, comprise master controller, battery pack application node and battery cell, described battery pack application node both sides are connected with respectively battery cell, the first tie point A of this battery pack application node connects the positive pole of left end battery cell, its second tie point B connects the negative pole of right-hand member battery cell, the 5th tie point Z of described battery pack application node is by communication bus T and master controller connection, described matrix battery management system comprises some series units that formed by battery cell and battery pack application node alternative arrangement, master controller and variable output direct-current switch power supply (Taiwan MEANWELL SPV-300-SPEC), described master controller (PLC) is a kind of performance element that can actuating logic program, in this controller, be provided with single-chip microcomputer (the serial CPU of Siemens 200), the output voltage that can control charge power supply changes the requirement to charging voltage with matching battery system configuration, the responsible whole battery system of described master controller links with external environment condition, its major function comprises: the voltage of measuring battery system, electric current, control the output voltage of power supply, by judgement externally fed situation, to switch battery system, link with load or power supply, the defencive functions such as short circuit, overload, reversal connection, under-voltage, overvoltage are provided, its inside is provided with for measuring the measuring circuit of the total voltage of whole battery system, electric current, the control circuit of controlling with each series unit, the protective circuit of the defencive functions such as short circuit, overload, reversal connection, under-voltage, overvoltage is provided, between described each series unit, be connected in parallel, each battery pack application node on each series unit all utilizes communication bus T and master controller connection by its 5th tie point Z.
Embodiment 3
The implementation method discharging and recharging of matrix battery management system described in embodiment 2, performing step is as follows:
3 switches that switch above-mentioned all battery pack application nodes by unification are realized the operation of parallel connection or combined charging, combined discharge, while discharging: the first K switch 1 closure, second switch K2, the 3rd K switch 3 disconnect; During charging: the first K switch 1 disconnects, second switch K2, the 3rd K switch 3 closures, the operational data of the instruction of described diverter switch and each battery pack application node scans by master controller by having sent instructions under communication bus T.
Specific works process comprises the steps:
Discharge process:
(1) master controller by Web broadcast, notifies all nodes to be switched to discharge condition, and second switch K2, the 3rd K switch 3 disconnect in advance, confirm to disconnect errorless after closed the first K switch 1 again, now whole battery system state switching is complete;
(2) master controller scans the state of battery pack, comprises that voltage, electric current, temperature and/or node are abnormal, after definite battery pack is normal, connects load, supplying power for outside;
(3) state of master controller continuation scanning battery pack in power supply process, comprise that voltage, electric current, temperature and/or node are abnormal, and calculate its dump energy, the inefficacy that protection is provided and/or determines certain battery cell by the abnormal scanning of node by measuring temperature and electric current by measuring battery voltage;
(4) when master controller measures battery voltage when too low, show that battery pack needs charging, now master controller will cut off load, wait to be charged;
Charging process:
(1) master controller detects charge power supply after exact connect ion, measures the open circuit voltage of whole battery system, if open circuit voltage is lower, illustrates that battery pack dump energy is less; Otherwise, illustrate that battery pack also has more dump energy.
(2) if can skip to following step (7) when dump energy is more or user wishes directly to carry out low pressure charged in parallel, otherwise high voltage and constant current charging in advance;
(3) the described high voltage and constant current charging process of step (2): master controller keeps the connection status of each battery pack application node in battery pack constant, measure the open circuit voltage of whole battery system and control an identical voltage of variable output voltage power supply output, now in circuit, there is no macroscopical current flowing;
(4) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, at power supply, progressively improve in the process of output voltage, charging current is also progressively promoting, when master controller detects charging current and reaches the preset charged electric current of battery pack, to keep the output voltage of power supply, now charging current tends towards stability;
(5) battery pack is in continuing charging process, and self voltage also can raise, because charging voltage is constant, and declines that fails to be convened for lack of a quorum of the charged electrical of battery pack, now, the output voltage that master controller can continue to promote power supply is stabilized in preset value with maintenance charging current;
(6) control procedure of above-mentioned steps (4), (5) and so forth, until the charging voltage of battery pack reaches a certain preset value, indicates that the high voltage and constant current charging process of this battery pack finishes;
(7) master controller will disconnect charge power supply, pass through Web broadcast, notify all battery pack application nodes to be switched to low pressure charged state, the first K switch 1 disconnects in advance, confirm to disconnect errorless after closed second switch K2, the 3rd K switch 3 again, now all battery cells are all connected in parallel, and prepare low pressure charged in parallel;
(8) low pressure charged in parallel process: master controller is measured the open circuit voltage of whole battery system and controlled an identical voltage of variable output voltage power supply output, now there is no macroscopical current flowing in circuit;
(9) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, at power supply, progressively improve in the process of output voltage, charging current is also progressively promoting, when master controller detects charging current and reaches the preset charged electric current of battery pack or reach power supply maximum output current, to keep the output voltage of power supply, now charging current tends towards stability;
(10) battery pack is in charging process, and self voltage also can raise, because charging voltage is constant, and the decline that fails to be convened for lack of a quorum of the charged electrical of battery pack, now, the output voltage that master controller can continue to promote power supply is to keep the stable of charging current;
(11) when charging voltage reaches the maximum permission charging voltage of whole batteries in parallel connection group, master controller no longer promotes supply voltage, and now, battery pack enters constant voltage charge state, enters after this state, and charging current will progressively reduce;
(12) when master controller detects charging current and is less than a certain preset value, can judge that battery system charging is complete, first master controller will disconnect charge power supply, then pass through Web broadcast, notify all nodes to be switched to discharge condition, i.e. the first K switch 1 closure, second switch K2, the 3rd K switch 3 disconnect, and so far battery pack realizes again external electric discharge.
Above-mentioned detailed description of this kind of battery pack application node and matrix battery management system and implementation method being carried out with reference to embodiment, illustrative rather than determinate, can list several embodiment according to institute's limited range, for example, on above-mentioned battery pack application node foundation structure, additional measuring circuit is with connecting sensor, described transducer is for realizing protection and the temperature to battery in institute compass of competency, electric current, the isoparametric measurement of voltage, therefore in the variation and the modification that do not depart under general plotting of the present invention, within should belonging to protection scope of the present invention.
Claims (10)
1. a battery pack application node, it is characterized in that: be by the first switch (K1), the circuit board that second switch (K2) and the 3rd switch (K3) connection form, on this circuit board, be provided with five tie points, the first tie point (A) wherein, the second tie point (B), the 3rd tie point (D), the 4th tie point (C) is single contact, be used for connecting power line, the 5th tie point (Z) is composite contact, for connecting communication bus and selectivity connecting sensor, described the first tie point (A) and the second tie point (B) are arranged at described the first switch ends, be that described the first switch is for this first tie point of UNICOM and the second tie point, and then respectively positive pole and the negative pole of its two ends, left and right of UNICOM two batteries to be connected, the 3rd tie point (D) is arranged at nearly second switch (K2) between the first tie point (A) and the second tie point (B), the first switch far away (K1) end, be that described second switch is for UNICOM's the 3rd tie point, and then the positive pole of UNICOM's charge power supply, the 4th tie point (C) is arranged at nearly the 3rd switch (K3) between the first tie point (A) and the second tie point (B), the first switch far away (K1) end, be that described the 3rd switch is for UNICOM's the 4th tie point, and then the negative pole of UNICOM's charge power supply, described the 5th tie point (Z) is arranged between described the second tie point (B) and the 3rd tie point (D).
2. the matrix battery management system with battery pack application node described in claim 1, it is characterized in that: comprise master controller, battery pack application node and battery cell, described battery pack application node both sides are connected with respectively battery cell, wherein first tie point (A) of this battery pack application node connects the positive pole of left end battery cell, its second tie point (B) connects the negative pole of right-hand member battery cell, and the 5th tie point (Z) of described battery pack application node is by communication bus and master controller communication.
3. matrix battery management system according to claim 2, is characterized in that: described battery cell can be that single battery can be also the battery pack being formed by single cell parallel.
4. matrix battery management system according to claim 2, it is characterized in that: comprise some series unit, master controller and power supplys that formed by battery cell and battery pack application node alternative arrangement, between described each series unit, be connected in parallel, each battery pack application node on each series unit all by its 5th tie point (Z) by communication bus and master controller connection.
5. matrix battery management system according to claim 2, is characterized in that: described power supply is variable output voltage power supply; The responsible whole battery system of described master controller links with external environment condition, and its major function comprises: voltage, the electric current of measuring battery system; Control the output voltage of variable output direct-current switch power supply; By judgement externally fed situation, to switch battery system, link with load or power supply; The defencive functions such as short circuit, overload, reversal connection, under-voltage, overvoltage are provided; its inside is provided with for measuring the measuring circuit of the total voltage of whole battery system, electric current; with the control circuit that each series unit is controlled, provide the protective circuit of the defencive functions such as short circuit, overload, reversal connection, under-voltage, overvoltage.
6. matrix battery management system according to claim 2, is characterized in that: the output voltage that described master controller can be controlled charge power supply changes the requirement to charging voltage with matching battery system configuration.
7. the implementation method discharging and recharging of matrix battery management system described in claim 2, it is characterized in that: specific implementation step is as follows: 3 switches that switch above-mentioned all battery pack application nodes by unification are realized the operation of parallel connection or combined charging, combined discharge, while discharging: the first switch (K1) closure, second switch (K2), the 3rd switch (K3) disconnect; During charging: the first switch (K1) disconnects, second switch (K2), the 3rd switch (K3) closure, the operational data scanning of the instruction of described diverter switch and each battery pack application node has been sent instructions by under communication bus by master controller.
8. the implementation method discharging and recharging of matrix battery management system according to claim 7, is characterized in that: specific implementation step is as follows:
Discharge process:
(1) master controller by Web broadcast, notifies all nodes to be switched to discharge condition, i.e. the first switch (K1) closure, and second switch (K2), the 3rd switch (K3) disconnect, and now whole battery system state switches complete;
(2) master controller scans the state of battery pack, comprises that voltage, electric current, temperature and/or node are abnormal, after definite battery pack is normal, connects load, supplying power for outside;
(3) state of master controller continuation scanning battery pack in power supply process, comprise that voltage, electric current, temperature and/or node are abnormal, and calculate its dump energy, the inefficacy that protection is provided and/or determines certain battery cell by the abnormal scanning of node by measuring temperature and electric current by measuring battery voltage;
(4) when master controller measures battery voltage when too low, show that battery pack needs charging, now master controller will cut off load, wait to be charged;
Charging process:
(1) master controller detects charge power supply after exact connect ion, measures the open circuit voltage of whole battery system, if open circuit voltage is lower, illustrates that battery pack dump energy is less; Otherwise, illustrate that battery pack also has more dump energy.
(2) if can skip to following step (7) when dump energy is more or user wishes directly to carry out low pressure charged in parallel, otherwise high voltage and constant current charging in advance;
(3) the described high voltage and constant current charging process of step (2): master controller keeps the connection status of each battery pack application node in battery pack constant, measure the open circuit voltage of whole battery system and control an identical voltage of variable output voltage power supply output, now in circuit, there is no macroscopical current flowing;
(4) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, at power supply, progressively improve in the process of output voltage, charging current is also progressively promoting, when master controller detects charging current and reaches the preset charged electric current of battery pack, to keep the output voltage of power supply, now charging current tends towards stability;
(5) battery pack is in continuing charging process, and self voltage also can raise, because charging voltage is constant, and declines that fails to be convened for lack of a quorum of the charged electrical of battery pack, now, the output voltage that master controller can continue to promote power supply is stabilized in preset value with maintenance charging current;
(6) control procedure of above-mentioned steps (4), (5) and so forth, until the charging voltage of battery pack reaches a certain preset value, indicates that the high voltage and constant current charging process of this battery pack finishes;
(7) master controller will disconnect charge power supply, pass through Web broadcast, notify all battery pack application nodes to be switched to low pressure charged state, the first switch (K1) disconnects, second switch (K2), the 3rd switch (K3) closure, now all battery cells are all connected in parallel, and prepare low pressure charged in parallel;
(8) low pressure charged in parallel process: master controller is measured the open circuit voltage of whole battery system and controlled an identical voltage of variable output voltage power supply output, now there is no macroscopical current flowing in circuit;
(9) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, at power supply, progressively improve in the process of output voltage, charging current is also progressively promoting, when master controller detects charging current and reaches the preset charged electric current of battery pack or reach power supply maximum output current, to keep the output voltage of power supply, now charging current tends towards stability;
(10) battery pack is in charging process, and self voltage also can raise, because charging voltage is constant, and the decline that fails to be convened for lack of a quorum of the charged electrical of battery pack, now, the output voltage that master controller can continue to promote power supply is to keep the stable of charging current;
(11) when charging voltage reaches the maximum permission charging voltage of whole batteries in parallel connection group, master controller no longer promotes supply voltage, and now, battery pack enters constant voltage charge state, enters after this state, and charging current will progressively reduce;
(12) when master controller detects charging current and is less than a certain preset value, can judge that battery system charging is complete, first master controller will disconnect charge power supply, then pass through Web broadcast, notify all nodes to be switched to discharge condition, i.e. the first switch (K1) closure, second switch (K2), the 3rd switch (K3) disconnect, and so far battery pack realizes again external electric discharge.
9. the implementation method discharging and recharging of matrix battery management system according to claim 8, it is characterized in that: second switch (K2), the 3rd switch (K3) disconnect in advance in the step of described discharge process (1), confirm disconnection errorless after closed the first switch (K1) again.
10. the implementation method discharging and recharging of matrix battery management system according to claim 8, it is characterized in that: in the step of described charging process (7), the first switch (K1) disconnects in advance, confirm to disconnect errorless after closed second switch (K2), the 3rd switch (K3) again.
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