CN103532203B - A kind of battery pack application node and matrix battery management system and implementation method - Google Patents
A kind of battery pack application node and matrix battery management system and implementation method Download PDFInfo
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- CN103532203B CN103532203B CN201310528690.3A CN201310528690A CN103532203B CN 103532203 B CN103532203 B CN 103532203B CN 201310528690 A CN201310528690 A CN 201310528690A CN 103532203 B CN103532203 B CN 103532203B
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Abstract
The invention provides a kind of battery pack application node and matrix battery management system and implementation method, described node is the circuit board connected to form by the first switch, second switch and the 3rd switching circuit, be provided with five tie points on the board, wherein A, B, C, D four points of connection is single contact, for connecting power line, Z is composite contact, for connecting communication bus and selectivity connecting sensor, described matrix battery management system interior joint both sides are connected to battery cell, wherein the first tie point of this battery pack application node connects the positive pole of left end battery cell, its second tie point connects the negative pole of right-hand member battery cell, 5th tie point of described battery pack application node is by communication bus and master controller connection, parallel connection or combined charging is realized by unified 3 switches switching described node, the operation of combined discharge, when battery pack by organize more series connection group formed time, by controlling each node state flexibly, the charging to any series connection group can be realized, electric discharge and opening operation.
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 arrive greatly electric automobile, bank's stand-by power supply, communications equipment room, radar station and broadcasting and TV machine room etc. all needs use battery pack.But, 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, for capacity, its otherness is tending towards disappearing never, but progressively worsen, same electric current is flow through in battery pack, comparatively speaking, the large person of capacity be always in relatively low current shallow fill shallowly to put, be tending towards capacity attenuation slowly, life, and the little person of capacity is always in relative big current super-charge super-discharge, is tending towards capacity attenuation quickening, the lost of life, performance parameter difference is increasing between the two, forms positive feedback characteristic, low capacity premature failure, causes battery life to shorten.
Visible, the connected mode that battery pack is in parallel after no matter adopting first rear series connection in parallel or first series connection, capital relates to following problem: for the connection of series system, present stage cannot carry out Current Control to each series unit, thus during charging complete, can not ensure that each series unit reaches full state, and the series unit minimum by capacity is determined by pack total capacities, this directly affects task performance and the useful life of whole battery pack.And the use problem after battery life is shortened, present stage also only has the battery pack by more renewing to solve, and this undesirably increases use cost.
Namely matrix battery pack carries out rectangular layout to battery pack, respectively the performance of battery pack is optimized in the patent application document of application number 200910096144.0,201010161351.2,201210136094.6, 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 the implementation method of the discharge and recharge providing 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 of second switch (K2) and the 3rd switch (K3) connection composition, be provided with five tie points on the board, wherein the first tie point (A), second tie point (B), 3rd tie point (D), 4th tie point (C) is single contact, for connecting power line, 5th tie point (Z) is composite contact, for connecting communication bus and selectivity connecting sensor, described first tie point (A) and the second tie point (B) are arranged at described first switch ends, namely described first switch is used for this first tie point of UNICOM and the second tie point, and then the respectively positive pole of the battery to be connected at its two ends, left and right of UNICOM and negative pole, 3rd tie point (D) is arranged at nearly second switch (K2) between the first tie point (A) and the second tie point (B), first switch (K1) end far away, namely described second switch is used for UNICOM the 3rd tie point, and then the positive pole of UNICOM's charge power supply, 4th tie point (C) is arranged at nearly 3rd switch (K3) between the first tie point (A) and the second tie point (B), first switch (K1) end far away, namely described 3rd switch is used for UNICOM the 4th tie point, and then the negative pole of UNICOM's charge power supply, described 5th tie point (Z) is arranged between described second tie point (B) and the 3rd tie point (D).
Above-mentioned system battery pack application node foundation structure; measuring circuit can be added with connecting sensor on this foundation structure; described transducer is for realizing the measurement (such as temperature, electric current, voltage etc.) of protection to battery in institute compass of competency and parameter; be preferably temperature sensor, described sensor control lines Lu Yu five tie point (Z) connects.
There is the matrix battery management system of 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 to battery cell, wherein first tie point (A) of this battery pack application node connects the positive pole of left end battery cell, its the 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 single battery also can be by the battery pack of single cell parallel.
Preferably, above-mentioned matrix battery management system, comprise some by battery cell and battery pack application node be alternately arranged formed series unit, master controller (described master controller be a kind of can the performance element of actuating logic program, single-chip microcomputer is provided with in this controller) and power supply, be connected in parallel between described each series unit, 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; Described master controller is responsible for linking of whole battery system and 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 (such as the SPV-300-SPEC of Taiwan MEANWELL brand, is called for short power supply later); By judging that externally fed situation links with load or power supply to switch battery system; The defencive functions such as short circuit, overload, reversal connection, under-voltage, overvoltage are provided; its inside is provided with the measuring circuit for measuring the total voltage of whole battery system, electric current; carry out with each series unit the control circuit that controls, the protective circuit of the defencive functions such as short circuit, overload, reversal connection, under-voltage, overvoltage is provided.
Preferably, above-mentioned matrix battery management system, described master controller can control the output voltage of charge power supply with the requirement of matching battery system configuration change to charging voltage.
The implementation method of the discharge and recharge of above-mentioned matrix battery management system, specific implementation step is as follows: the operation being realized parallel connection or combined charging, combined discharge by unified 3 switches switching above-mentioned all battery pack application nodes, when namely discharging: the first K switch 1 closes, and 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 close, and the instruction of described diverter switch and the operational data scanning of each battery pack application node have been sent instructions by under communication bus by master controller.
The implementation method of the discharge and recharge of above-mentioned matrix battery management system, specific implementation step is as follows:
Discharge process:
(1) master controller is by Web broadcast, notifies that all nodes are switched to discharge condition, and namely K1 closes, and K2, K3 disconnect, and now whole battery system state switches complete;
(2) state of master controller to battery pack scans, and comprises voltage, electric current, temperature and/or node abnormal, after determining that battery pack is normal, connects load, supplying power for outside;
(3) in power supply process, master controller continues the state of scanning battery pack, comprise voltage, electric current, temperature and/or node abnormal, and calculate its dump energy by measuring battery voltage, protection is provided by measuring tempeature and electric current and/or scans by node is abnormal the inefficacy determining certain battery cell;
(4) when master controller measure battery voltage too low time, show battery pack need 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, then illustrates that battery pack dump energy is less; Otherwise, then illustrate that battery pack also has more dump energy.
(2) if dump energy is more or user wishes can skip to following step (7) when directly carrying out low pressure charged in parallel, otherwise leading high voltage and constant current is charged;
(3) step (2) described high voltage and constant current charging process: 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 variable output voltage power supply and export an identical voltage, now in circuit, not having macroscopic electrical current to circulate;
(4) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, progressively improve in the process of output voltage at power supply, charging current is also progressively promoting, when master controller detect charging current reach the preset charged electric current of battery pack time, to keep the output voltage of power supply, now charging current tends towards stability;
(5) battery pack is in continuation charging process, and its voltage also can raise, and because charging voltage is constant, the charged electrical of battery pack fails to be convened for lack of a quorum declines, and now, master controller can continue the output voltage of lifting power supply to keep charge current stabilizes at preset value;
(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 terminates;
(7) master controller will disconnect charge power supply, by Web broadcast, notify that all battery pack application nodes are switched to low pressure charged state, and namely 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 variable output voltage power supply and export an identical voltage, does not now have macroscopic electrical current to circulate in circuit;
(9) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, progressively improve in the process of output voltage at power supply, charging current is also progressively promoting, when master controller detect charging current reach the preset charged electric current of battery pack or reach power supply maximum output current time, to keep the output voltage of power supply, now charging current tends towards stability;
(10) battery pack is in charging process, and its voltage also can raise, and because charging voltage is constant, the charged electrical of battery pack fails to be convened for lack of a quorum decline, and now, master controller can continue to promote the output voltage of power supply to keep stablizing 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, and after entering this state, charging current will progressively reduce;
(12) when master controller detect charging current be less than a certain preset value time, can judge that battery system charging is complete, first master controller will disconnect charge power supply, then pass through Web broadcast, notify that all nodes are switched to discharge condition, namely K1 closes, and K2, K3 disconnect, and so far battery pack realizes again external electric discharge.
Preferably, the implementation method of the discharge and recharge of above-mentioned matrix battery management system, in the step (1) of described discharge process, K2, K3 disconnect in advance, after confirmation disconnection is errorless, close K1 again.
Preferably, the implementation method of the discharge and recharge of above-mentioned matrix battery management system, in the step (7) of described charging process, K1 disconnects in advance, after confirmation disconnection is errorless, close K2, K3 again.
The invention has the beneficial effects as follows:
Battery pack application node structure of the present invention is simple, compact, be easy to manufacture, all elements all can adopt solid state electrical components, and reliability is very high, completely can be integrated with battery cell, can be intelligent battery with battery integration packaging, only need reserve simple communication interface, the battery dispatched from the factory future just can be made with any configuration mode to 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 research and development manufacture work of the production work of battery producer and battery management system is separately carried out, and this system can make each battery cell in matrix battery system be full of at the end of charging process simultaneously, really achieve the constant current-constant voltage-float of battery matrix, substantially increase task performance and the useful life of whole battery pack, when finding that Individual cells monomer breaks down, can easily remove and the battery cell more renewed, do not need to change whole battery pack, save use cost.It should be noted that especially, when battery pack by organize more series connection group formed time, by controlling each node state flexibly, the charging to any series connection group, electric discharge and opening operation can be realized, when this means to discharge to a certain series connection group, 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 (circuit board) of the present invention;
Fig. 2 is the line connecting relation schematic diagram of matrix battery management system of the present invention.
In figure: K1-first K switch 2-second switch K3-the 3rd switch
A-first tie point B-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 (the battery matrix system of 3 × 6 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 of second switch K2 and the 3rd K switch 3 connection composition, be provided with five tie points on the board, wherein the first tie point A, second tie point B, 3rd tie point D, 4th tie point C is single contact, for connecting power line, 5th tie point Z is composite contact, for connecting communication bus, described first tie point A and the second tie point B is arranged at described first switch ends, namely described first K switch 1 is for this first tie point A of UNICOM and the second tie point B, and then the respectively positive pole of two pieces of batteries to be connected at its two ends, left and right of UNICOM and negative pole, 3rd tie point D is arranged at nearly second switch K2 between the first tie point A and the second tie point B, first K switch 1 end far away, namely described second switch is used for UNICOM the 3rd tie point, and then the positive pole of UNICOM's charge power supply, 4th tie point C is arranged at nearly 3rd K switch 3 between the first tie point A and the second tie point B, first K switch 1 end far away, namely described 3rd switch is used for UNICOM the 4th tie point C, and then the negative pole of UNICOM's charge power supply, described 5th tie point Z is arranged between described 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 system battery pack application node; measuring circuit can be added with connecting sensor on this foundation structure; described transducer is for realizing measurement (the such as temperature sensor of protection to battery in institute compass of competency and parameter; for overtemperature protection), described sensor control lines Lu Yu five tie point (Z) connects.
The whole course of work is summarized as follows:
When using described battery pack application node, node has following tie point, respectively:
First tie point A: connect left end anode;
Second tie point B: connect right-hand member battery cathode;
4th tie point C: connect charge power supply negative pole;
3rd tie point D: connect charge power supply positive pole;
5th tie point Z: connecting communication bus T;
3 switches are had in node, respectively:
First K switch 1: be responsible for UNICOM AB and hold, both left and right battery plus-negative plates;
Second switch K2: be responsible for UNICOM D and hold, be i.e. charge power supply positive pole;
3rd K switch 3: be responsible for UNICOM C and hold, be i.e. charge power supply negative pole.
During charging: the first K switch 1 disconnects, second switch K2, the 3rd K switch 3 close;
During electric discharge: the first K switch 1 closes, and second switch K2, the 3rd K switch 3 disconnect.
In addition, above-mentioned node, can the detection such as additional temp, voltage, electric current and defencive function upload related data by communication bus T by Single-chip Controlling.
Embodiment 2
As shown in Figure 2, there is the matrix battery management system of 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 to battery cell, 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, 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 and to be somely alternately arranged the series unit formed by battery cell and battery pack application node, master controller and variable output direct-current switch power supply (Taiwan MEANWELLSPV-300-SPEC), described master controller (PLC) be a kind of can the performance element of actuating logic program, single-chip microcomputer (the serial CPU of Siemens 200) is provided with in this controller, the output voltage of charge power supply can be controlled with the requirement of matching battery system configuration change to charging voltage, described master controller is responsible for linking of whole battery system and external environment condition, its major function comprises: the voltage measuring battery system, electric current, control the output voltage of power supply, by judging that externally fed situation links with load or power supply to switch battery system, the defencive functions such as short circuit, overload, reversal connection, under-voltage, overvoltage are provided, its inside is provided with the measuring circuit for measuring the total voltage of whole battery system, electric current, the control circuit that controls is carried out with each series unit, the protective circuit of the defencive functions such as short circuit, overload, reversal connection, under-voltage, overvoltage is provided, be connected in parallel between described each series unit, 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 of the discharge and recharge of matrix battery management system described in embodiment 2, performing step is as follows:
The operation of parallel connection or combined charging, combined discharge is realized, when namely discharging: the first K switch 1 closes, and second switch K2, the 3rd K switch 3 disconnect by unified 3 switches switching above-mentioned all battery pack application nodes; During charging: the first K switch 1 disconnects, second switch K2, the 3rd K switch 3 close, and the instruction of described diverter switch and the operational data of each battery pack application node scan by master controller by having sent instructions under communication bus T.
Specific works process comprises the steps:
Discharge process:
(1) master controller is by Web broadcast, and notify that all nodes are switched to discharge condition, namely second switch K2, the 3rd K switch 3 disconnect in advance, and after confirmation disconnection is errorless, close the first K switch 1 again, now whole battery system state switches complete;
(2) state of master controller to battery pack scans, and comprises voltage, electric current, temperature and/or node abnormal, after determining that battery pack is normal, connects load, supplying power for outside;
(3) in power supply process, master controller continues the state of scanning battery pack, comprise voltage, electric current, temperature and/or node abnormal, and calculate its dump energy by measuring battery voltage, protection is provided by measuring tempeature and electric current and/or scans by node is abnormal the inefficacy determining certain battery cell;
(4) when master controller measure battery voltage too low time, show battery pack need 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, then illustrates that battery pack dump energy is less; Otherwise, then illustrate that battery pack also has more dump energy.
(2) if dump energy is more or user wishes can skip to following step (7) when directly carrying out low pressure charged in parallel, otherwise leading high voltage and constant current is charged;
(3) step (2) described high voltage and constant current charging process: 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 variable output voltage power supply and export an identical voltage, now in circuit, not having macroscopic electrical current to circulate;
(4) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, progressively improve in the process of output voltage at power supply, charging current is also progressively promoting, when master controller detect charging current reach the preset charged electric current of battery pack time, to keep the output voltage of power supply, now charging current tends towards stability;
(5) battery pack is in continuation charging process, and its voltage also can raise, and because charging voltage is constant, the charged electrical of battery pack fails to be convened for lack of a quorum declines, and now, master controller can continue the output voltage of lifting power supply to keep charge current stabilizes at preset value;
(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 terminates;
(7) master controller will disconnect charge power supply, pass through Web broadcast, notify that all battery pack application nodes are switched to low pressure charged state, namely the first K switch 1 disconnects in advance, confirmation 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 variable output voltage power supply and export an identical voltage, does not now have macroscopic electrical current to circulate in circuit;
(9) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, progressively improve in the process of output voltage at power supply, charging current is also progressively promoting, when master controller detect charging current reach the preset charged electric current of battery pack or reach power supply maximum output current time, to keep the output voltage of power supply, now charging current tends towards stability;
(10) battery pack is in charging process, and its voltage also can raise, and because charging voltage is constant, the charged electrical of battery pack fails to be convened for lack of a quorum decline, and now, master controller can continue to promote the output voltage of power supply to keep stablizing 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, and after entering this state, charging current will progressively reduce;
(12) when master controller detect charging current be less than a certain preset value time, can judge that battery system charging is complete, first master controller will disconnect charge power supply, then pass through Web broadcast, notify that all nodes are switched to discharge condition, namely the first K switch 1 closes, and 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 instead of determinate, several embodiments can be listed according to institute's limited range, such as, on above-mentioned battery pack application node foundation structure, additional measuring circuit is with connecting sensor, described transducer is for realizing protection to battery in institute compass of competency and temperature, electric current, the isoparametric measurement of voltage, therefore in the change do not departed under general plotting of the present invention and amendment, should belong within protection scope of the present invention.
Claims (7)
1. a matrix battery management system, it is characterized in that: comprise master controller, battery pack application node and battery cell, described battery pack application node both sides are connected to battery cell, wherein first tie point (A) of this battery pack application node connects the positive pole of left end battery cell, its the second tie point (B) connects the negative pole of right-hand member battery cell, 5th tie point (Z) of described battery pack application node is by communication bus and master controller communication, described battery pack application node is by the first switch (K1), the circuit board of second switch (K2) and the 3rd switch (K3) connection composition, be provided with five tie points on the board, wherein the first tie point (A), second tie point (B), 3rd tie point (D), 4th tie point (C) is single contact, for connecting power line, 5th tie point (Z) is composite contact, for connecting communication bus and selectivity connecting sensor, described first tie point (A) and the second tie point (B) are arranged at described first switch ends, namely described first switch is used for this first tie point of UNICOM and the second tie point, and then distinguish positive pole and the negative pole of its two ends, left and right of UNICOM two pieces of batteries to be connected, 3rd tie point (D) is arranged at nearly second switch (K2) between the first tie point (A) and the second tie point (B), first switch (K1) end far away, namely described second switch is used for UNICOM the 3rd tie point, and then the positive pole of UNICOM's charge power supply, 4th tie point (C) is arranged at nearly 3rd switch (K3) between the first tie point (A) and the second tie point (B), first switch (K1) end far away, namely described 3rd switch is used for UNICOM the 4th tie point, and then the negative pole of UNICOM's charge power supply, described 5th tie point (Z) is arranged between described second tie point (B) and the 3rd tie point (D),
Described battery cell can be single battery also can be by the battery pack of single cell parallel;
Described master controller controls the output voltage of charge power supply with the requirement of matching battery system configuration change to charging voltage.
2. matrix battery management system according to claim 1, it is characterized in that: comprise and to be somely alternately arranged the series unit, master controller and the power supply that are formed by battery cell and battery pack application node, be connected in parallel between each described series unit, each battery pack application node on each series unit all by its 5th tie point (Z) by communication bus and master controller connection.
3. matrix battery management system according to claim 2, is characterized in that: described power supply is variable output voltage power supply; Described master controller is responsible for linking of whole battery system and 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 judging that externally fed situation links with load or power supply to switch battery system; Short circuit, overload, reversal connection, under-voltage, over-voltage protecting function are provided; its inside is provided with the measuring circuit for measuring the total voltage of whole battery system, electric current; carry out with each described series unit the control circuit that controls, the protective circuit of short circuit, overload, reversal connection, under-voltage, over-voltage protecting function is provided.
4. the implementation method of the discharge and recharge of matrix battery management system described in claim 1, it is characterized in that: specific implementation step is as follows: the operation being realized parallel connection or combined charging, combined discharge by unified 3 switches switching above-mentioned all battery pack application nodes, when namely discharging: the first switch (K1) closes, second switch (K2), the 3rd switch (K3) disconnect; During charging: the first switch (K1) disconnects, second switch (K2), the 3rd switch (K3) are closed, and the instruction of described diverter switch and the operational data scanning of each battery pack application node have been sent instructions by under communication bus by master controller.
5. the implementation method of the discharge and recharge of matrix battery management system according to claim 4, is characterized in that: specific implementation step is as follows:
Discharge process:
1. master controller is by Web broadcast, notifies that all nodes are switched to discharge condition, and namely the first switch (K1) closes, and second switch (K2), the 3rd switch (K3) disconnect, and now whole battery system state switches complete;
2. the state of master controller to battery pack scans, and comprises voltage, electric current, temperature and/or node abnormal, after determining that battery pack is normal, connects load, supplying power for outside;
3. in power supply process, master controller continues the state of scanning battery pack, comprise voltage, electric current, temperature and/or node abnormal, and calculate its dump energy by measuring battery voltage, protection is provided by measuring tempeature and electric current and/or scans by node is abnormal the inefficacy determining certain battery cell;
4. when master controller measure battery voltage too low time, show battery pack need 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, then illustrates that battery pack dump energy is less; Otherwise, then illustrate that battery pack also has more dump energy;
(2) if dump energy is more or user wishes to skip to following step (7) when directly carrying out low pressure charged in parallel, otherwise leading high voltage and constant current is charged;
(3) step (2) described high voltage and constant current charging process: 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 variable output voltage power supply and export an identical voltage, now in circuit, not having macroscopic electrical current to circulate;
(4) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, progressively improve in the process of output voltage at power supply, charging current is also progressively promoting, when master controller detect charging current reach the preset charged electric current of battery pack time, to keep the output voltage of power supply, now charging current tends towards stability;
(5) battery pack is in continuation charging process, and its voltage also can raise, and because charging voltage is constant, the charged electrical of battery pack fails to be convened for lack of a quorum declines, and now, master controller can continue the output voltage of lifting power supply to keep charge current stabilizes at preset value;
(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 terminates;
(7) master controller will disconnect charge power supply, pass through Web broadcast, notify that all battery pack application nodes are switched to low pressure charged state, namely the first switch (K1) disconnects, second switch (K2), the 3rd switch (K3) are closed, 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 variable output voltage power supply and export an identical voltage, does not now have macroscopic electrical current to circulate in circuit;
(9) master controller control variable output voltage power supply progressively improves output voltage, now battery system is in charged state, progressively improve in the process of output voltage at power supply, charging current is also progressively promoting, when master controller detect charging current reach the preset charged electric current of battery pack or reach power supply maximum output current time, to keep the output voltage of power supply, now charging current tends towards stability;
(10) battery pack is in charging process, and its voltage also can raise, and because charging voltage is constant, the charged electrical of battery pack fails to be convened for lack of a quorum decline, and now, master controller can continue to promote the output voltage of power supply to keep stablizing 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, and after entering this state, charging current will progressively reduce;
(12) when master controller detect charging current be less than a certain preset value time, namely judge that battery system charging is complete, first master controller will disconnect charge power supply, then pass through Web broadcast, notify that all nodes are switched to discharge condition, namely the first switch (K1) closes, and second switch (K2), the 3rd switch (K3) disconnect, and so far battery pack realizes again external electric discharge.
6. the implementation method of the discharge and recharge of matrix battery management system according to claim 5, it is characterized in that: in the step (1) of described discharge process, second switch (K2), the 3rd switch (K3) disconnect in advance, after confirmation disconnection is errorless, closes the first switch (K1) again.
7. the implementation method of the discharge and recharge of matrix battery management system according to claim 5, it is characterized in that: in the step (7) of described charging process, the first switch (K1) disconnects in advance, confirmation disconnect errorless after closed second switch (K2), the 3rd switch (K3) again.
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| CN106207283A (en) * | 2016-07-26 | 2016-12-07 | 同济大学 | A kind of supervising device of vehicle-mounted multiple-connected battery group |
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| CN109309398B (en) * | 2018-09-30 | 2023-09-19 | 联想(北京)有限公司 | Processing method and power supply device |
| DE102018124752A1 (en) * | 2018-10-08 | 2020-04-09 | Jungheinrich Ag | Industrial truck |
| CN109742821B (en) * | 2019-01-23 | 2022-08-19 | 国网江苏省电力有限公司电力科学研究院 | Dynamically-reconfigurable battery pack semi-matrix type topological structure, system and control method |
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