CN112290647B - Battery power supply system and method thereof - Google Patents
Battery power supply system and method thereof Download PDFInfo
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- CN112290647B CN112290647B CN202011302863.6A CN202011302863A CN112290647B CN 112290647 B CN112290647 B CN 112290647B CN 202011302863 A CN202011302863 A CN 202011302863A CN 112290647 B CN112290647 B CN 112290647B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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Abstract
The invention provides a battery power supply system and a method thereof, wherein the system comprises a power supply control unit and a battery unit connected with the power supply control unit; the battery unit includes a plurality of battery modules; the battery module comprises a control circuit and a battery pack connected with the control circuit; the control circuits of the respective battery modules are connected in series; the power supply control unit is used for converting the electric energy in the battery unit into a target output power system and acquiring the state data of each battery module; the battery unit is used for monitoring whether electric energy is input or not through the control circuit of each battery module, and controlling the battery unit to close the electric energy output if the electric energy is input; if not, the self electric energy output is controlled. The invention can realize the configuration of the battery units according to the needs, reduce the cost and reduce the system volume; meanwhile, online capacity expansion without shutdown can be realized, and field maintenance is facilitated. The practicability and robustness of the battery power supply system are obviously improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery power supply system and a method thereof.
Background
Some industrial applications require battery powered systems that can be powered uninterruptedly for long periods of time. In the prior art, a battery power supply system matched with most equipment needs to be customized according to the working time required by the equipment. A plurality of battery packs are generally required to be configured at one time to meet the requirement of long-time operation of equipment; and the external power supplies work until the loss of the internal battery pack is finished, and the operations such as overhauling or replacing the battery pack cannot be carried out in the middle. If the external power supply is used for maintenance or battery pack replacement, power output cannot be provided, and equipment shutdown will be caused.
In order to solve the above problems, in the prior art, some parallel battery packs are used to support online replacement, but there is a problem of redundant configuration of the battery packs, which cannot implement configuration as required, and the system cost is high.
In summary, the battery power supply system of the prior art has the following disadvantages:
1. the existing battery power supply system is mostly designed and used once based on the requirement of equipment; under the condition that an external source cannot be connected on site, the configured battery pack is continuously increased along with the increase of the working time of system design, so that the overall cost is increased;
2. when the battery pack of the conventional battery power supply system is replaced, the system needs to be stopped and cannot supply power continuously;
3. the consumption mode of the battery pack of the conventional battery power supply system adopts a collective consumption mode, and all batteries are in a power consumption working mode together when the system supplies power to the outside, so that the intelligent control cannot be realized.
Therefore, a new battery power supply system and method thereof are needed to solve the problems of online capacity expansion and on-demand configuration.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the battery power supply system and the method thereof can realize configuration according to needs and online capacity expansion.
In order to solve the technical problems, the invention adopts the technical scheme that:
a battery power supply system comprises a power supply control unit and a battery unit connected with the power supply control unit; wherein the battery unit includes two or more battery modules; the battery module comprises a control circuit and a battery pack connected with the control circuit; the control circuits of the respective battery modules are connected in series;
the power supply control unit is used for converting electric energy in the battery unit into a target output power system and acquiring state data of each battery module;
the battery unit is used for monitoring whether electric energy is input or not through the control circuit of each battery module, and controlling the battery unit to close the electric energy output if the electric energy is input; if not, the self electric energy output is controlled.
Further, the battery module further comprises an electric energy input end VIN, an electric energy output end VOUT and a battery state output end; the control circuit comprises a battery management module, a monitoring control module, a first analog switch and a second analog switch;
the electric energy input end VIN of the battery module is connected with the electric energy output end VOUT of the next battery module, and is divided into three paths after entering a control circuit of the battery module, the first path VIN-1 is connected with the battery management module, the second path VIN-2 is connected with the monitoring control module, and the third path VIN-3 is connected with the first analog switch; the battery management module is also respectively connected with a battery pack, a second analog switch and the battery state output end; the monitoring control module is also respectively connected with a first analog switch and a second analog switch; the first analog switch and the second analog switch are also respectively connected with the electric energy output end; the battery state output end is connected with the power supply control unit;
the battery unit is specifically configured to:
when the monitoring control module monitors that a signal is input into the second path VIN-2, the second analog switch is controlled to be closed, and meanwhile the first analog switch is controlled to be conducted;
when the monitoring control module monitors that no signal is input to the second path VIN-2, the second analog switch is controlled to be switched on, and the first analog switch is controlled to be switched off.
Furthermore, the power supply control unit is provided with an emergency power supply interface; the emergency power supply interface is used for being connected with any battery module.
Further, the system also comprises a centralized detection system connected with the power supply control unit;
the centralized detection system is used for detecting and displaying the state data acquired from the power supply control unit.
Further, the number of the power supply control units connected with the centralized detection system is more than two.
The invention provides another technical scheme as follows:
a battery powered method, comprising:
setting a power supply control unit and a battery unit connected with the power supply control unit; wherein the battery unit includes two or more battery modules; the battery module comprises a control circuit and a battery pack connected with the control circuit; the control circuits of the respective battery modules are connected in series;
the control circuit of each battery module monitors whether electric energy is input;
if yes, controlling the self-closing electric energy output; if not, controlling self electric energy output;
converting the electric energy output by the battery unit into a target output power system;
and acquiring the state data of each battery module.
Further, the battery module further comprises an electric energy input end VIN, an electric energy output end VOUT and a battery state output end; the control circuit comprises a battery management module, a monitoring control module, a first analog switch and a second analog switch;
the electric energy input end VIN of the battery module is connected with the electric energy output end VOUT of the next battery module, and is divided into three paths after entering a control circuit of the battery module, the first path VIN-1 is connected with the battery management module, the second path VIN-2 is connected with the monitoring control module, and the third path VIN-3 is connected with the first analog switch; the battery management module is also respectively connected with a battery pack, a second analog switch and the battery state output end; the monitoring control module is also respectively connected with a first analog switch and a second analog switch; the first analog switch and the second analog switch are also respectively connected with the electric energy output end; the battery state output end is connected with the power supply control unit;
the control circuit of each battery module monitors whether electric energy is input; if yes, controlling the self-closing electric energy output; if not, the self electric energy output is controlled, and the method comprises the following steps:
when the monitoring control module monitors that a signal is input into the second path VIN-2, the second analog switch is controlled to be closed, and meanwhile the first analog switch is controlled to be conducted;
when the monitoring control module monitors that no signal is input to the second path VIN-2, the second analog switch is controlled to be switched on, and the first analog switch is controlled to be switched off.
Further, still include:
when the battery module connected with the power supply control unit breaks down, the power supply control unit is connected with the normal battery module through the emergency power supply interface on the power supply control unit.
Further, the system also comprises a centralized detection system connected with the power supply control unit;
detecting and displaying status data acquired from the power supply control unit by the centralized detection system.
Further, the number of the power supply control units connected with the centralized detection system is more than two.
The invention has the beneficial effects that: in the battery power supply system, because the battery modules are connected in series and are controlled by the control circuit in the battery modules, in the aspect of distribution and use of electric energy, as long as the power supply control module monitors that the electric energy is input, namely the subsequent battery modules are electrified, the external input electric energy is preferentially used for supplying power until no electric energy is input, namely the subsequent battery modules or the subsequent battery modules are not exhausted, and then the electric energy of the built-in battery pack is started. In terms of system structure, the outermost battery module is first consumed, and then the other battery modules are sequentially consumed from outside to inside. Therefore, by adopting the battery power supply system, on one hand, the battery modules in the battery unit can be freely configured without influencing equipment, the battery unit can be configured as required, a large number of battery modules do not need to be configured at one time, the cost can be reduced, the system volume is reduced, and the transportation is facilitated; on the other hand, the battery modules in the battery units can be replaced or increased or decreased online without shutdown operation, namely online capacity expansion, so that normal operation of equipment can be ensured, and field maintenance is facilitated; therefore, the practicability and the robustness of the battery power supply system are obviously improved.
Drawings
Fig. 1 is a schematic diagram illustrating the structural components and connections of a battery power supply system according to an embodiment of the present invention;
fig. 2 is a schematic circuit connection diagram of a battery power supply system according to an embodiment of the invention;
fig. 3 is a schematic circuit diagram of a battery module in a battery power supply system according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a fifth embodiment of the present invention.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Example one
Referring to fig. 1, the present invention provides a battery power supply system, which includes a power supply control unit and a battery unit connected to the power supply control unit; wherein the battery unit includes two or more battery modules. The specific number of battery modules may be configured according to the actual consumption of the system or the patrol maintenance period, i.e., configured as needed.
Each battery module comprises a control circuit and a battery pack connected with the control circuit; the control circuits of the battery modules are connected in series;
specifically, as shown in fig. 2, the circuit connection will be briefly described by taking an example in which the battery unit includes three battery modules, i.e., a first battery module, a second battery module, and a third battery module. Therefore, the control circuits in the first battery module, the second battery module and the third battery module are respectively connected with the battery packs of the first battery module, the second battery module and the third battery module; the output end of a first control circuit in the first battery module is directly connected with the power supply control unit, and the input end of the first control circuit is connected with the output end of a second control circuit in the second battery module; the input end of the second control circuit is connected with the output end of a third control circuit in the third battery module; in addition, the first control circuit, the second control circuit and the third control circuit are respectively provided with a battery state output end connected with the power supply control unit and used for outputting state data of the corresponding battery module.
In the system of this embodiment, the power supply control unit is configured to convert electric energy in the battery unit into a target output power and obtain status data of each battery module;
the battery unit is used for monitoring whether electric energy is input or not through the control circuit of each battery module, and controlling the battery unit to close the electric energy output if the electric energy is input; if not, the self electric energy output is controlled.
Specifically, the circuit operation principle based on the circuit configuration of the system of fig. 2 is as follows:
1. when the first battery module is not accessed by the outer battery module (namely, the second battery module), the input IN1 of the first battery module is 0, and the first control circuit converts and outputs the electric energy of the first battery pack to the output OUT1 to supply power to the power supply control unit.
2. When an outer battery module (i.e., a second battery module) is accessed, the output OUT2 of the second battery module will be connected to the input IN1 of the first battery module. At this time, the first control circuit of the first battery module detects that the input IN1 has a voltage input, and then the voltage of the control input IN1 is directly output to the output OUT1 to supply power to the power supply control unit; meanwhile, the first control point bank controls the first battery pack to stop outputting the electric energy to the output OUT1, and controls the electric energy input into IN1 to charge the first battery pack until the electric quantity of the battery of the second battery module is exhausted. At this time, the output OUT2 of the second battery module is 0, that is, the input IN1 of the first battery module is 0, when the first control circuit detects that the input IN1 of the first battery module is 0, the through connection between the input IN1 and the output OUT1 is cut off, and the first battery pack is controlled to output to the output OUT1 thereof, so that the power supply control unit is continuously supplied with power by itself.
3. When the third battery module is connected, the input IN2 and the output OUT2 of the second battery module are directly connected, the input IN1 and the output OUT1 of the first battery module are directly connected, namely, the third battery module directly supplies power to the power supply control unit, and meanwhile, the third battery module charges the second battery pack of the second battery module and the first battery pack of the first battery module until the electric quantity of the third battery pack is consumed, and then the electric quantity is converted into electric energy which is supplied to the first battery module and the power supply control power supply by the second battery module.
The control circuit of the battery module has a simple structure and is convenient to control, the input (external) electric quantity is preferentially used in the distribution and use of the electric energy, and the electric energy of the built-in battery pack is used; the electric quantity of the battery module at the outermost layer on the system structure is used up first, and then the electric quantity of the battery packs in other battery modules is consumed from outside to inside in sequence until the completion. If the outer battery module is accessed before all the battery modules are exhausted, the outermost battery module can provide power for the power supply source and charge the battery packs of all the inner battery modules at the same time until the battery modules are exhausted. Particularly, when a certain battery module has a fault, the fault influence of the battery module can be shielded only by setting the battery module to be in a through state. The structure is very convenient for field maintenance, and the electric quantity can be continuously supplied to the power supply unit under the condition of no power failure as long as the empty battery module at the outer layer is replaced by a fully charged new battery module or is directly connected with the new battery module, so that the online capacity expansion is realized; in addition, because the battery modules are connected in series, the battery modules can be flexibly disassembled and assembled, the battery modules can be configured according to requirements, a large number of battery modules do not need to be configured at one time, the cost can be reduced, the system volume is reduced, and the transportation is facilitated.
Example two
The embodiment is further expanded on the basis of the first embodiment:
the battery unit of the system is specifically configured to:
when the monitoring control module monitors that a signal is input into the second path VIN-2, the second analog switch is controlled to be closed, and meanwhile the first analog switch is controlled to be switched on;
when the monitoring control module monitors that the second path VIN-2 has no signal input, the second analog switch is controlled to be switched on, and meanwhile the first analog switch is controlled to be switched off.
The specific circuit structure corresponding to the functions of the battery unit is as follows:
as shown in fig. 3, each battery module includes an electric energy input terminal VIN, an electric energy output terminal VOUT, a battery state output terminal, a control circuit, and a battery pack; each control circuit comprises a battery management module, a monitoring control module, a first analog switch and a second analog switch;
the electric energy input end VIN of each battery module is connected with the electric energy output end VOUT of the next battery module (if the battery module exists), and if the battery module does not exist in the outer layer, the processing is not carried out; after entering a control circuit of the battery input end VIN, dividing the battery input end VIN into three paths, wherein the first path VIN-1 is connected with the battery management module (as the input of the battery management module), the second path VIN-2 is connected with the monitoring control module (as the input of the monitoring control module), and the third path VIN-3 is connected with a first analog switch (as the input of the first analog switch); the battery management module is also respectively connected with a battery pack, a second analog switch and the battery state output end; the monitoring control module is also respectively connected with a first analog switch and a second analog switch; the first analog switch and the second analog switch are also connected with the electric energy output end VOUT respectively; the battery state output end is connected with the power supply control unit.
Optionally, the battery management module may be completed by using corresponding circuits according to different battery types, and only needs to satisfy conventional management control functions such as charging and discharging, protection, and the like of the battery pack, and a function of outputting battery state data (including a working state, battery electric quantity, and the like).
The monitoring control module continuously monitors the signal of the electric energy input end VIN, and a specific management control process (also a circuit working principle of the battery module in this embodiment) is as follows:
1. when an input signal is provided at the electric energy input end VIN of the battery module, VIN-1 is input to charge the battery pack through a battery charging and discharging module (not shown in the figure); when the monitoring control module monitors that VIN-2 has a signal input, the monitoring control module controls K2 to output and control the switch of the second module to be closed, and stops outputting BAT _ OUT of the battery pack to an electric energy output end VOUT of the module; meanwhile, the output of the control K1 controls the first analog switch to be conducted, and the input of VIN-3 is directly output to the electric energy output end VOUT of the module through the first analog switch. At this time, the battery pack of the battery module is in a charging state, and the electric energy output by the battery module is directly supplied by the electric energy input terminal VIN (i.e. external electric energy).
2. When the electric energy input end VIN of the battery module has no input signal, the monitoring control module does not monitor the signal input of VIN-2, the control K1 output controls the switch of the first module to be switched off, and simultaneously the control K2 output controls the switch of the second analog switch to be switched on, so that the output BAT _ OUT of the battery pack is output to the output end VOUT through the second module switch. At this time, the output power of the battery module is entirely supplied from the battery pack itself.
As can be seen from the above description, when a plurality of battery modules are stacked together to operate, the actual operating power of the terminal load during operation and the charging power of the battery pack of the inner battery module initially originate from the battery module at the outermost layer; after the electric energy of the battery pack of the outermost battery module is consumed, the electric energy of the battery module of the inner layer is used, and therefore the electric energy of the battery modules from outside to inside is sequentially consumed. Therefore, when replacement and maintenance are carried out, as long as the battery module at the inner layer is electrified, the online battery replacement and supplement of the terminal load can be realized by replacing the battery module at the outer layer; and, because battery module can nimble dismouting, consequently can realize disposing battery module as required, need not once only dispose a large amount of battery modules to reduce cost, and convenient transportation.
The control circuit of the embodiment can accurately control the output energy source of the system and improve the effective output working efficiency of the battery pack. The battery power supply circuit has the advantages that the monitoring control module and the analog switch combination are added on the basis of the traditional battery management circuit (including related battery charging and discharging control and protection circuits), the state of the analog switch is controlled by monitoring the input signal output control signal, the output source of the whole battery supply circuit is controlled, the accurate selection of the output electric energy source can be realized, the on-site requirement is better met, the practicability is extremely strong, and the robustness of a battery power supply system is remarkably improved.
EXAMPLE III
The embodiment is further expanded on the basis of the first embodiment or the second embodiment:
the system also comprises a centralized detection system connected with the power supply control unit; the centralized detection system is used for detecting and displaying the state data acquired from the power supply control units, and the number of the power supply control units can be more than two.
Therefore, the present embodiment can further monitor the state of the whole system (including the number of battery modules and the state of each battery module) on the basis of the functions that can be realized by the above embodiments.
Particularly, the method comprises independent monitoring and display of each battery module, and/or centralized monitoring and display of the states of the battery units, and/or independent/unified monitoring of a plurality of battery units, so that a user can conveniently and comprehensively master the states of the battery power supply system in time, and the method is favorable for maintenance and management.
Preferably, the power supply control unit further includes a wireless communication module, and the wireless communication module is configured to send the acquired monitoring data including the status data of each battery module and the like to the centralized detection system.
Example four
The embodiment is further expanded on the basis of any one of the first embodiment to the third embodiment:
the power supply control unit is provided with an emergency power supply interface; the emergency power supply interface is used for being connected with any battery module when needed so as to replace the battery module closest to the power supply control unit. For example, when the battery module closest to the power supply control unit fails, the emergency battery module may be connected to the emergency power supply interface through a dedicated connection line, and the power supply of the power supply control unit is supplied by the emergency battery module. At this time, the battery module closest to the power supply control unit in the original battery unit can be replaced, and after the replacement is completed, the connection with the emergency battery module is disconnected, so that the normal power supply of the battery unit is recovered.
EXAMPLE five
Referring to fig. 4, the embodiment is further expanded on the basis of any one of the first to fourth embodiments:
the overall dimension of the power supply control unit and each battery module is consistent, and a unified module interface is arranged, so that the interface can meet the requirements of transferring electric quantity and module parameters between the power supply control unit and the battery module and between the battery module and the battery module, and can also be used as a charging interface of the battery module to be connected to a special charger to charge the battery module. In addition, the power supply control unit is also provided with a system electric quantity indicator lamp and a power supply output interface; and each battery module is provided with a module electric quantity indicator lamp.
The system also comprises more than two fixing modules; each battery module is connected with the corresponding battery module through an interface and is fixed through one fixing module; in addition, the power supply control unit is also connected with the battery module through an interface and is fixed through one fixing module.
In a specific example, the power supply control unit and the battery module are both rectangular bodies, and the shapes and the sizes of planes on which the interfaces are arranged on the power supply control unit and the battery module are consistent;
the fixing module is provided with at least four fixing devices and module interfaces; the fixing device is used for fixing the two modules. The position of the fixing device is arranged at a position close to the edge on a plane opposite to the two modules after the fixing and the installation so as to ensure the fixed connection; and the positions of the module interfaces are arranged corresponding to the positions of the connecting interfaces of the two modules.
Preferably, the fixing device is of a flat plate structure and corresponds to the shape and size of the plane provided with the interface; the number of the fixing devices is four, and the fixing devices are respectively arranged at positions close to four corners of the flat plate structure.
Preferably, the fixing device is a magnetic attraction device; the power supply control unit and the position, corresponding to the magnetic attraction device, on the shell of the battery module are of metal structures so as to realize the free combination of the battery module. For example, use the battery module of lithium cell electricity core audit, because weight is lighter, adopt to inhale the device at battery module design magnetism all around, make things convenient for between the electromagnetic module mutual absorption fixed, form an organic whole.
The embodiment realizes the integrated setting of the battery unit and the power supply control unit, not only facilitates the placement and the loading and unloading of the module, but also can save the occupied area and reduce the manufacturing cost.
EXAMPLE six
Referring to fig. 1 to 4, the present embodiment provides a battery power supply method, which is applied to the battery power supply system described in any one of the first to third embodiments.
The implementation comprises the following method steps:
the control circuit of each battery module monitors whether electric energy is input;
if yes, controlling the self-closing electric energy output; if not, controlling self electric energy output;
converting the electric energy output by the battery unit into a target output power system;
and acquiring the state data of each battery module.
Further, the method further comprises:
the control circuit of each battery module monitors whether electric energy is input; if yes, controlling the self-closing electric energy output; if not, the self electric energy output is controlled, and the method comprises the following steps:
when the monitoring control module monitors that a signal is input into the second path VIN-2, the second analog switch is controlled to be closed, and meanwhile the first analog switch is controlled to be conducted;
when the monitoring control module monitors that no signal is input to the second path VIN-2, the second analog switch is controlled to be switched on, and the first analog switch is controlled to be switched off.
Further, the method further comprises:
when the battery module connected with the power supply control unit breaks down, the power supply control unit is connected with the normal battery module through the emergency power supply interface on the power supply control unit.
Further, the method further comprises:
detecting and displaying status data acquired from the power supply control unit by the centralized detection system. Preferably, the number of the power supply control units connected to the centralized detection system is two or more.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. A battery power supply system is characterized in that the system comprises a power supply control unit and a battery unit connected with the power supply control unit; wherein the battery unit includes two or more battery modules; the battery module comprises a control circuit and a battery pack connected with the control circuit; the control circuits of the respective battery modules are connected in series;
the power supply control unit is used for converting electric energy in the battery unit into a target output power system and acquiring state data of each battery module;
the battery unit is used for monitoring whether the battery module has electric energy input through the control circuit of each battery module, and controlling the battery module to close the electric energy output if the battery module has the electric energy input; if not, controlling the self electric energy output of the battery module;
the battery module also comprises an electric energy input end VIN, an electric energy output end VOUT and a battery state output end; the control circuit comprises a battery management module, a monitoring control module, a first analog switch and a second analog switch;
the electric energy input end VIN of the battery module is connected with the electric energy output end VOUT of the next battery module, and is divided into three paths after entering a control circuit of the battery module, the first path VIN-1 is connected with the battery management module, the second path VIN-2 is connected with the monitoring control module, and the third path VIN-3 is connected with the first analog switch; the battery management module is also respectively connected with a battery pack, a second analog switch and the battery state output end; the monitoring control module is also respectively connected with a first analog switch and a second analog switch; the first analog switch and the second analog switch are also respectively connected with the electric energy output end; the battery state output end is connected with the power supply control unit;
the battery unit is specifically configured to:
when the monitoring control module monitors that a signal is input into the second path VIN-2, the second analog switch is controlled to be closed, and meanwhile the first analog switch is controlled to be conducted;
when the monitoring control module monitors that no signal is input to the second path VIN-2, the second analog switch is controlled to be switched on, and the first analog switch is controlled to be switched off.
2. A battery power supply system according to claim 1, wherein said power supply control unit is provided with an emergency power supply interface; the emergency power supply interface is used for being connected with any battery module.
3. A battery operated system according to claim 1, wherein the system further comprises a centralized detection system connected to the power supply control unit;
the centralized detection system is used for detecting and displaying the state data acquired from the power supply control unit.
4. A battery power supply system according to claim 3, wherein the number of power supply control units connected to said centralized detection system is two or more.
5. A battery powered method, comprising:
setting a power supply control unit and a battery unit connected with the power supply control unit; wherein the battery unit includes two or more battery modules; the battery module comprises a control circuit and a battery pack connected with the control circuit; the control circuits of the respective battery modules are connected in series;
the control circuit of each battery module monitors whether the battery module has electric energy input;
if yes, controlling the battery module to close the electric energy output; if not, controlling the self electric energy output of the battery module;
converting the electric energy output by the battery unit into a target output power system;
acquiring state data of each battery module;
the battery module also comprises an electric energy input end VIN, an electric energy output end VOUT and a battery state output end; the control circuit comprises a battery management module, a monitoring control module, a first analog switch and a second analog switch;
the electric energy input end VIN of the battery module is connected with the electric energy output end VOUT of the next battery module, and is divided into three paths after entering a control circuit of the battery module, the first path VIN-1 is connected with the battery management module, the second path VIN-2 is connected with the monitoring control module, and the third path VIN-3 is connected with the first analog switch; the battery management module is also respectively connected with a battery pack, a second analog switch and the battery state output end; the monitoring control module is also respectively connected with a first analog switch and a second analog switch; the first analog switch and the second analog switch are also connected with the electric energy output end respectively; the battery state output end is connected with the power supply control unit;
the control circuit of each battery module monitors whether electric energy is input; if yes, controlling the self-closing electric energy output; if not, the self electric energy output is controlled, and the method comprises the following steps:
when the monitoring control module monitors that a signal is input into the second path VIN-2, the second analog switch is controlled to be closed, and meanwhile the first analog switch is controlled to be conducted;
when the monitoring control module monitors that no signal is input to the second path VIN-2, the second analog switch is controlled to be switched on, and the first analog switch is controlled to be switched off.
6. A battery operated method according to claim 5, further comprising:
when the battery module connected with the power supply control unit breaks down, the power supply control unit is connected with the normal battery module through the emergency power supply interface on the power supply control unit.
7. A battery power supply method according to claim 5, further comprising a centralized detection system connected to said power supply control unit;
detecting and displaying status data acquired from the power supply control unit by the centralized detection system.
8. The battery power supply method according to claim 7, wherein the number of power supply control units connected to the centralized detection system is two or more.
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