CN212162839U - Capacity-expandable hot-plug type battery power supply system - Google Patents
Capacity-expandable hot-plug type battery power supply system Download PDFInfo
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- CN212162839U CN212162839U CN202020475548.2U CN202020475548U CN212162839U CN 212162839 U CN212162839 U CN 212162839U CN 202020475548 U CN202020475548 U CN 202020475548U CN 212162839 U CN212162839 U CN 212162839U
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Abstract
The utility model discloses a capacity-expandable hot-plug type battery power supply system, which comprises an inverter box and at least one battery box; the contravariant case includes: the system comprises an inversion module, a charging module, a first bus bar, a second bus bar, an inversion starting switch, an alternating current output port, an alternating current input port and a battery box interface; the battery box is provided with a power port and a communication interface; the communication interface of the battery box is connected with the communication interface of the battery box for communication; the technical scheme of the utility model, the battery box carries out the transmission and the update of the signal between the battery line through communication interface, under the condition of not with the help of other management and control devices or central processing unit, independently accomplishes the switching of battery box power supply or charging, can also realize the hot plug operation of battery box based on communication mode between the battery box, therefore when this embodiment system has good expansion performance, can also realize quick, high-efficient and convenient power supply, but wide application in electric power storage technical field.
Description
Technical Field
The utility model belongs to the technical field of the power storage technique and specifically relates to a but dilatation hot plug formula battery power supply system.
Background
With the global climate change problem, the reduction of non-renewable energy, electric energy is widely advocated as a clean green energy. However, the method is limited by the fact that under some conditions and occasions, alternating current cannot be directly transmitted, and the alternating current is obtained by inverting the alternating current through a battery carrier and direct current. Lithium batteries are widely used in energy storage systems due to their excellent properties such as high energy density, long service life, and no memory effect. The lithium battery forms a battery pack in a series-parallel connection mode, the battery pack is managed by a Battery Management System (BMS), and an electric power supply system is formed by matching with an electronic circuit, so that the problem of power supply of places where most electric energy cannot directly reach can be solved, and the alternating current power supply system is developed by being applied to places such as construction sites, medical centers, communication base stations and natural disasters.
However, the energy storage device or system of the current lithium battery still has the following technical problems:
1) the expandable and poor sustainable performance directly results in the whole energy storage device not providing enough electric energy to support long-time operation.
2) The hot plug operation is not supported, and the selected battery pack is required to be judged and determined through central processing, so that the efficiency is low, and the reliability is poor.
3) The mode of parallel power supply of the battery pack is adopted, so when the battery pack is used, if the voltage of the battery pack is not kept consistent, circulation current is easy to generate, and the battery is damaged.
SUMMERY OF THE UTILITY MODEL
In order to solve one of the above technical problems, the utility model aims to provide a: the battery box is convenient to operate, and the capacity-expandable hot-plug type battery power supply system is high in safety.
The utility model adopts the technical proposal that:
a capacity-expandable hot-plug type battery power supply system comprises an inverter box and at least one battery box; the contravariant case includes: the charging system comprises an inversion module, a charging module, a first bus bar, a second bus bar, an inversion starting switch, an alternating current output port and an alternating current input port; the battery box comprises a power supply port and a communication interface; the power supply port of the battery box is respectively connected with one end of the first bus bar and one end of the second bus bar; the other end of the first bus bar is respectively connected with the input end of the inversion module and the output end of the charging module; the other end of the second bus bar is respectively connected with the input end of the inversion module and the output end of the charging module; the output end of the inversion module is connected with the alternating current output port, and the starting switch signal receiving end of the inversion module is connected with the inversion starting switch; the input end of the charging module is connected with the alternating current input port; and the communication interface of the battery box is connected with the communication interface of the battery box for communication.
Further, the battery box further comprises a battery pack, a BMS module, a CPU processor, a DC/DC converter, a fan, a main power switch and an output control switch;
the output control switch is connected with the output control end of the CPU processor; the communication interface of the battery box is connected with the first communication port of the CPU processor; the second communication port of the CPU processor is connected with the BMS module, and the control port of the CPU processor is connected with the DC/DC converter; the information acquisition port of the BMS module is connected with the battery pack; the positive electrode of the battery pack is respectively connected with the first input end of the DC/DC converter and the positive electrode of the power supply port; the negative electrode of the battery pack is respectively connected with the second input end of the DC/DC converter and the negative electrode of the power supply port, the fan control port of the DC/DC converter is connected with the fan, the main power supply control port of the DC/DC converter is connected with the main power supply switch, and the interlocking signal port of the DC/DC converter is connected with the power supply port.
Furthermore, the battery box also comprises a backflow prevention module and a main relay, wherein the input end of the backflow prevention module is connected with the anode of the battery pack; the output end of the backflow prevention module is connected with the positive pole of the main relay, a first control port of the backflow prevention module is connected with the CPU processor, a second control port of the backflow prevention module is connected with the DC/DC converter, and a pre-charging port of the backflow prevention module is connected with the positive pole of the power supply port; and the negative electrode of the main relay is connected with the positive electrode of the power port, and the two ends of the coil of the main relay are connected with the control port of the main controller of the DC/DC converter.
Further, the battery box still includes the fuse, the one end of fuse with the input of preventing flowing backward the module is connected, the other end of fuse is connected with the positive pole of group battery.
Further, the battery box also comprises a display device, and the display device is connected with the CPU processor.
Further, the battery box and the battery box are connected and communicated through the CAN.
Further, the bottom of the battery box is provided with a pulley.
The utility model has the advantages that: the technical scheme of the utility model separate battery box and contravariant case, the battery box can realize the dilatation through the mode of parallelly connected access contravariant case, the battery box carries out the transmission and the update of the signal between the battery line through communication interface, under the condition with the help of other management and control devices or central processing unit, independently accomplish the switching of battery box power supply or charging, the hot plug operation of battery box can also be realized based on communication mode between the battery box, therefore when this embodiment system has good expansion performance, can also realize fast, high efficiency and convenient power supply.
Drawings
Fig. 1 is a schematic diagram illustrating a connection relationship between a battery box and an inverter box of the expandable hot plug type battery power supply system of the present invention;
FIG. 2 is a schematic circuit diagram of the inside of the inverter box of the capacity-expandable hot-plug type battery power supply system of the present invention;
fig. 3 is a schematic circuit diagram of the inside of the battery box of the capacity-expandable hot-plug type battery power supply system of the present invention;
fig. 4 is a layout diagram of a battery box panel of the volume-expandable hot-plug type battery power supply system.
Reference numerals: 101. a main power switch; 102. a power port; 103. a fan; 104. an output control switch; 105. a display device; 106. a communication interface; 201. a first bus bar; 202. a second bus bar.
Detailed Description
The invention is described in further detail below with reference to the drawings and specific examples.
The utility model discloses mainly include two parts of contravariant case and battery box, as shown in fig. 1, four battery boxes and an contravariant case are selected as concrete embodiment to explain to this specification, and the first battery box interface CH1, second battery box interface CH2, third battery box interface CH3 and the fourth battery box interface CH4 of contravariant case are connected respectively to four battery boxes.
As shown in fig. 2, the inverter module in the inverter box is used for converting the direct current provided by the power box into alternating current for each electrical appliance; the charging module is used for converting alternating current into direct current when the battery box is charged; the four battery boxes are connected with the battery box interfaces of the inverter box through power ports and are respectively connected to the input end of the inverter module and the output end of the charging module through a first bus bar 201 and a second bus bar 202, and the first bus bar and the second bus bar are used for collecting positive and negative power boxes of the four battery boxes to play a role in relaying; the output end of the inversion module is connected to the alternating current output port and used for supplying power to an electric appliance; the inlet and outlet end of the charging module is connected with the alternating current input port and is used for being externally connected with a power supply and providing power supply for charging the battery; in addition, the inversion box is also provided with an inversion starting switch, and the inversion starting switch is connected to a switch signal receiving end of the inversion module and used for controlling whether the inversion module works or not. In this embodiment, the communication interface of the battery box is used for completing information transmission and update between the battery box and the battery box, and the processor inside the battery box independently completes the reception of the state information of other battery boxes without using other management and control devices or a central processing unit, and generates a control instruction to switch the charging or discharging working mode of the battery box currently connected to the inverter; for example, when the battery boxes are communicated with each other, the current remaining power and the temperature of the battery boxes of a and B are obtained, and the temperature of the battery box is higher than a threshold value (which can be set in advance) due to the aging of the battery pack used for a long time in the battery box a, a CPU processor of the battery box a issues a control signal for forced disconnection, and the battery box B supplies power, and meanwhile, a CPU of the battery box B controls the battery box to supply power.
As shown in fig. 3, the battery box mainly includes a battery pack for storing electric energy; the positive electrode and the negative electrode of the battery pack are connected to the power supply port, and the battery pack supplies direct current to the inverter box or receives the direct current supplied by the inverter box for storage; one end of the BMS module is connected to the battery pack, the other end (communication end) of the BMS module is connected with a second communication end of the CPU processor and used for monitoring the voltage and temperature information of the battery pack, transmitting an abnormal signal to the CPU processor when the voltage and/or temperature of the battery pack is abnormal, and sending an abnormal alarm by the CPU processor; the CPU module is the core of the battery box and is used for receiving signals of other modules and sending control signals, and meanwhile, the CPU module also plays a role in keeping communication connection with other battery boxes, so that the whole battery box has the functions of overload protection, over-temperature protection, under-voltage protection, overvoltage protection, short-circuit protection and the like; the first communication port of the CPU processor is connected with the communication interface of the battery box, the second communication port is connected with the BMS module, the control port of the CPU processor is connected with the DC/DC converter, and meanwhile, the output control end of the CPU processor is connected with an output control switch which can control whether the power box supplies power to the outside; the battery box also comprises a DC/DC converter, and when the battery box is charged, the voltage of an external power supply is converted into the limited voltage of the battery pack; when the battery box discharges, the power supply voltage of the battery pack is converted into the fixed voltage correspondingly received by the inversion module of the inversion box, and the input end of the converter is connected to the positive electrode and the negative electrode of the battery pack. A fan control port of the converter is connected with a fan and used for radiating the whole battery box; a main power control port of the converter is connected with the main power switch, and the main power switch is used for controlling whether the whole battery box works (power supply function and communication function); and the DC/DC converter interlocking signal port is connected with the power supply port and is used for receiving a signal of the current inverter connected with the battery box and enabling the battery box to enter a communication state or a waiting state. In addition, the battery box is also provided with an output control switch for independently controlling whether the battery box supplies power. The output control switch is directly connected with a CPU processor in the battery box, and the CPU processor issues a control signal (instruction) to complete the on or off of power supply.
The battery box in the embodiment further comprises a backflow prevention module, a main relay, a fuse and a display device; the two control ports which prevent backflow are respectively connected with the DC/DC converter and the CPU, the output end of the control port is connected with the anode of the main relay, the input end of the control port is connected with the fuse and then connected to the anode of the battery pack, and the fuse is used for fusing when the circuit generates abnormal (exceeds a specified value) current and plays a role in protecting the circuit; the negative pole of the main relay is connected to the positive pole of the power port of the battery box, the coil of the main relay is connected to the control port of the main controller of the DC/DC converter, the main relay is used for cutting off the circuit according to the signal of the control port of the main controller when the battery box has a backward flow phenomenon, and the main relay also plays a role in protecting the circuit of the battery box; the pre-charging port of the backflow prevention module is also connected to the power supply port and is also used for avoiding the backflow phenomenon caused by the fact that other battery boxes supply power to the battery box when the power supply is stopped; meanwhile, pre-charging can be carried out when the current is low; the display device is connected to the signal output port of the CPU processor and used for displaying the state information of the battery box and the residual quantity of the battery.
As an implementation mode, the battery box and the battery box complete information intercommunication between the battery box and the battery box through a distributed communication system constructed by a Controller Area Network (CAN), the CAN communication enables the battery boxes in the system to receive the same signals at the same time, the communication real-time performance is stronger, the formed redundant structure CAN improve the reliability and flexibility of the system, and the system has higher practicability compared with a communication system which only CAN form a master-slave mode through RS485 communication.
As an embodiment, as shown in fig. 4, the bottom of the battery box is provided with pulleys, so that the battery box is convenient to carry and transport, and at the same time, a main power switch 101, a power port 102 and a fan 103 are arranged on one side (back side) of the battery box; on the other side of the battery box, an output control switch 104, a display device 105 and two communication interfaces 106 are provided.
The functions and operations that can be realized by the present embodiment will be described in detail with reference to the present embodiment:
the battery power supply system composed of the four battery boxes and the inverter box of the embodiment has the advantages that the four battery boxes are connected with the inverter box at the same time, distributed network communication is formed through communication interfaces on the battery boxes, the battery box system is powered by one battery box, and when the electric quantity is nearly exhausted, the system is switched to the next battery box to continue power supply. The battery box that electric quantity runs out can pull out the wiring, and the battery box that changes is new, and receiving system connects the signal, continues the power supply, and at plug battery box in-process, the dc-to-ac converter still can continue work, provides the alternating current, realizes continuous uninterrupted power supply, and simultaneously, the system also can manual operation, passes through button output control switch by the operating personnel scene, selects a battery box that has enough electric quantity to supply power, the disconnection with other batteries be connected. The hot plug is realized mainly by mutual independence of hardware systems of the battery boxes and mutual real-time communication, for example, the battery box A, B is connected to the inverter box, the battery box A supplies power, the battery box B does not supply power, at the moment, a user wants to disconnect the battery box B, the battery box C is connected to the inverter box, a connector lock switch connected to the inverter box B needs to be pressed, the connector is pulled out, and then the connector of the battery box C is connected to the inverter box; if want to let battery box A disconnection, battery box C connects at the contravariant case, then need press battery box A and connect the connector lock switch at the contravariant case, battery box A stop work at once, pull out the connector CAN, through the CAN communication between the machine, continue the power supply by battery box B, realize uninterrupted power supply, then insert the contravariant case with battery box C connector. The battery box that the electric quantity runs out can move to the place that has the alternating current and charge, resumes the electric quantity. The battery box has interlocking protect function, if the battery box is supplying power, the pilot lamp on the battery box is bright to show for a long time, if the user pulls out the wiring, battery box system disconnection to inform other battery boxes and connect the power supply.
To sum up, compared with the prior art, the utility model, have following advantage:
1) the utility model has strong exhibition performance, supports hot plugging, and can ensure safe, convenient and efficient power supply;
2) the utility model discloses the battery box passes through the communication network that communication interface inserts the distributing type, and the battery box is power supply in coordination, and consequently the reliability of system is higher, and is more accurate.
3) The utility model discloses the structural design lightweight of battery box, the bottom of the case has the wheel and is convenient for carry the transportation, whole elegant appearance.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (7)
1. A capacity-expandable hot-plug type battery power supply system is characterized by comprising an inverter box and at least one battery box;
the contravariant case includes: the charging system comprises an inversion module, a charging module, a first bus bar, a second bus bar, an inversion starting switch, an alternating current output port and an alternating current input port;
the battery box comprises a power supply port and a communication interface;
the power supply port of the battery box is respectively connected with one end of the first bus bar and one end of the second bus bar; the other end of the first bus bar is respectively connected with the input end of the inversion module and the output end of the charging module; the other end of the second bus bar is respectively connected with the input end of the inversion module and the output end of the charging module; the output end of the inversion module is connected with the alternating current output port, and the starting switch signal receiving end of the inversion module is connected with the inversion starting switch; the input end of the charging module is connected with the alternating current input port;
and the communication interface of the battery box is connected with the communication interface of the battery box for communication.
2. The expandable hot-plug type battery power supply system according to claim 1, wherein the battery box further comprises a battery pack, a BMS module, a CPU processor, a DC/DC converter, a fan, a main power switch and an output control switch;
the output control switch is connected with the output control end of the CPU processor; the communication interface of the battery box is connected with the first communication port of the CPU processor; the second communication port of the CPU processor is connected with the BMS module, and the control port of the CPU processor is connected with the DC/DC converter; the information acquisition port of the BMS module is connected with the battery pack; the positive electrode of the battery pack is respectively connected with the first input end of the DC/DC converter and the positive electrode of the power supply port; the negative electrode of the battery pack is respectively connected with the second input end of the DC/DC converter and the negative electrode of the power supply port, the fan control port of the DC/DC converter is connected with the fan, the main power supply control port of the DC/DC converter is connected with the main power supply switch, and the interlocking signal port of the DC/DC converter is connected with the power supply port.
3. The expandable hot-plug battery power supply system according to claim 2, wherein the battery box further comprises a backflow prevention module and a main relay, and an input end of the backflow prevention module is connected with the positive electrode of the battery pack; the output end of the backflow prevention module is connected with the positive pole of the main relay, a first control port of the backflow prevention module is connected with the CPU processor, a second control port of the backflow prevention module is connected with the DC/DC converter, and a pre-charging port of the backflow prevention module is connected with the positive pole of the power supply port; and the negative electrode of the main relay is connected with the positive electrode of the power port, and the two ends of the coil of the main relay are connected with the control port of the main controller of the DC/DC converter.
4. An expandable hot-plug type battery power supply system according to claim 3, wherein the battery box further comprises a fuse, one end of the fuse is connected with the input end of the backflow prevention module, and the other end of the fuse is connected with the positive electrode of the battery pack.
5. An expandable hot-plug type battery power supply system as claimed in claim 4, wherein said battery box further comprises a display device, said display device being connected to said CPU processor.
6. An expandable hot-plug type battery power supply system as claimed in any one of claims 1 to 5, wherein the battery box is connected to and communicates with the battery box via CAN.
7. An expandable hot-plug type battery power supply system as claimed in any one of claims 1 to 5, wherein the bottom of the battery box is provided with pulleys.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020475548.2U CN212162839U (en) | 2020-04-02 | 2020-04-02 | Capacity-expandable hot-plug type battery power supply system |
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| CN202020475548.2U CN212162839U (en) | 2020-04-02 | 2020-04-02 | Capacity-expandable hot-plug type battery power supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115173534A (en) * | 2022-09-06 | 2022-10-11 | 深圳市驰普科达科技有限公司 | Outdoor power supply device, capacity-expanded battery device and outdoor power supply assembly |
| WO2023221709A1 (en) * | 2022-05-18 | 2023-11-23 | 深圳市德兰明海新能源股份有限公司 | Scalable energy storage system and scaling method thereof |
-
2020
- 2020-04-02 CN CN202020475548.2U patent/CN212162839U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221709A1 (en) * | 2022-05-18 | 2023-11-23 | 深圳市德兰明海新能源股份有限公司 | Scalable energy storage system and scaling method thereof |
| CN115173534A (en) * | 2022-09-06 | 2022-10-11 | 深圳市驰普科达科技有限公司 | Outdoor power supply device, capacity-expanded battery device and outdoor power supply assembly |
| CN115173534B (en) * | 2022-09-06 | 2022-12-27 | 深圳市驰普科达科技有限公司 | Outdoor power supply device, capacity-expanded battery device and outdoor power supply assembly |
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