CN209929992U - Dispersed cascade charge-discharge device - Google Patents
Dispersed cascade charge-discharge device Download PDFInfo
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- CN209929992U CN209929992U CN201920394652.6U CN201920394652U CN209929992U CN 209929992 U CN209929992 U CN 209929992U CN 201920394652 U CN201920394652 U CN 201920394652U CN 209929992 U CN209929992 U CN 209929992U
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Abstract
The utility model discloses a scattered charging and discharging device that cascades, include a plurality of charging and discharging module that are established ties one by the interconnected cable, the input of charging and discharging module is connected with the monitor module, and this monitor module is including the control unit, sampling circuit one, control circuit one, communication circuit one, display circuit one and auxiliary power supply one, the charging and discharging module is including AC/DC converting circuit, discharge circuit, sampling circuit two, communication circuit two, display circuit two, control circuit two and auxiliary power supply two. The utility model discloses a structural style with the mutual series connection of charge-discharge module to connect monitoring module, make the device be the dispersed level overall arrangement, can carry out the pertinence charge-discharge of battery, need not step-down device simultaneously, the cost is reduced, the appearance of single charge-discharge module trouble only influences this charge-discharge module, can not influence the normal work of other charge-discharge modules, and improved the use operational environment of device, the effectual ageing of battery that has delayed.
Description
Technical Field
The utility model relates to a charge-discharge technical field specifically is a dispersed cascades charge-discharge device.
Background
The charging and discharging of the storage battery are the most basic two states in the use process of the storage battery. With the wide application of storage batteries, the storage battery charging and discharging technology and method are continuously developed and updated, which puts higher requirements on storage battery charging and discharging devices. At present, the charging and discharging of storage batteries, especially the charging and discharging of storage battery packs, all adopt the centralized mode, i.e. the storage batteries are connected in series into the storage battery pack, and then the charging and discharging are carried out by adopting the centralized storage battery charging and discharging device, wherein the output positive and negative electrodes of the centralized storage battery charging and discharging device are respectively connected with the positive and negative electrodes of the storage battery pack. The centralized storage battery charging and discharging device generally adopts single-phase 220V or three-phase 380V alternating current input, and when the device is in a charging state, the alternating current input is converted into direct current through an internal power conversion circuit and is output to the storage battery for charging; when in a discharging state, the storage battery is discharged through the internal discharging module, and the prior art has obvious technical defects as follows;
1: the storage batteries with different SOC, SOH and internal resistance states cannot be charged and discharged in a targeted manner;
2: a matched voltage-sharing device is needed, the needed voltage-sharing device is complex to control, high in cost and unobvious in voltage-sharing effect, and unbalance of the storage battery is easy to accelerate;
3: the charging and discharging voltage level is high, personal safety hazards exist, the fault rate is high, and the charging and discharging function cannot be realized when a single fault occurs;
4: the using environment is limited, the storage batteries in a serial state can only be charged and discharged in a centralized manner, and the storage batteries in a dispersed state cannot be charged and discharged, so that the mobility of the storage batteries is reduced;
5: the aging of the storage battery is easy to accelerate, and the service life of the storage battery is shortened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dispersed cascades charge-discharge device to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a distributed cascade charge-discharge device comprises a plurality of charge-discharge modules which are connected in series one by one through interconnected cables, wherein the input end of each charge-discharge module is connected with a monitoring module, each monitoring module comprises a control unit, a first sampling circuit, a first control circuit, a first communication circuit, a first display circuit and a first auxiliary power supply, and each charge-discharge module comprises an AC/DC conversion circuit, a discharge circuit, a second sampling circuit, a second communication circuit, a second display circuit, a second control circuit and a second auxiliary power supply.
The control unit is used for the centralized control of monitoring module, sampling circuit is used for exchanging input sampling and ambient temperature sampling, control circuit is used for monitoring module AC output contactor control, communication circuit is used for communication and the external equipment communication between the charge-discharge module, display circuit is used for the operating condition information display, auxiliary power source one is used for the power supply of control unit, sampling circuit, control circuit, communication circuit and display circuit.
The output end of the charge-discharge module is connected with a storage battery.
And the input end of the monitoring module is connected with an input cable for alternating current input.
And the output end of the charge-discharge module and the input end of the storage battery are connected with a charging cable.
According to the above technical scheme, the utility model discloses a structural style with the mutual series connection of charge-discharge module to connect monitoring module, make the device be the distribution level overall arrangement, can carry out the pertinence charge-discharge of battery, need not step-down device simultaneously, the cost is reduced, and the battery all independently cooperates with the charge-discharge module in the charging process, the appearance of single charge-discharge module trouble only influences this charge-discharge module, can not influence the normal work of other charge-discharge modules, and the use operational environment of device has been improved, the effectual ageing of battery that has delayed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic block diagram of the monitoring module of the present invention;
fig. 3 is a schematic block diagram of the charge-discharge module of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
a distributed cascade charge-discharge device as shown in fig. 1-3, comprising a plurality of charge-discharge modules connected in series one by interconnected cables, wherein the input end of each charge-discharge module is connected with a monitoring module, the monitoring module comprises a control unit, a first sampling circuit, a first control circuit, a first communication circuit, a first display circuit and a first auxiliary power supply, the control unit of the monitoring module is used for centralized control of the monitoring module, the first sampling circuit is used for ac input sampling and ambient temperature sampling, the first control circuit is used for controlling an ac output contactor of the monitoring module, the first communication circuit is used for communication between the charge-discharge modules and communication between external devices, the first display circuit is used for displaying working state information, and the first auxiliary power supply is used for supplying power to the control unit, the first sampling circuit, the first control circuit, the first communication circuit and the first display circuit; the output end of the charge-discharge module is connected with a storage battery, the charge-discharge module comprises an AC/DC conversion circuit, a discharge circuit, a second sampling circuit, a second communication circuit, a second display circuit, a second control circuit and a second auxiliary power supply, the AC/DC conversion circuit of the charge-discharge module is used for charging the storage battery and converting alternating current input into direct current output, the discharge circuit is used for discharging the storage battery, the sampling circuit is used for voltage sampling, charging current sampling, discharging current sampling and ambient temperature sampling, the control circuit is used for controlling a charge output contactor and a discharge input contactor of the charge-discharge module, the second display circuit is used for prompting working state information of the charge-discharge module, the communication circuit is used for realizing communication between the charge-discharge module and the monitoring module, and the second auxiliary power supply is used for providing communication for the AC/DC conversion circuit, the discharge circuit, The sampling circuit II, the display circuit II, the communication circuit II and the control circuit II supply power, and the charge-discharge module has protection functions such as reverse connection protection, overvoltage protection, undervoltage protection, short-circuit protection, overheating protection and the like, so that the use safety of the device is ensured.
In the use process of the dispersed cascade charge-discharge device, alternating current input supplies power to the monitoring module through the input cable, and the alternating current input supplies power to the charge-discharge module through the interconnection cable after being controlled by the monitoring module. In the charging mode, the charging and discharging module converts alternating current input into direct current through AC/DC conversion so as to charge the storage battery. Meanwhile, the charging and discharging module collects charging voltage, charging current, charging time and charging fault state information in real time, transmits the charging voltage, charging current, charging time and charging fault state information to the monitoring module through the interconnection cable, and receives remote control of the monitoring module. In the process of intelligently managing the storage battery by the charging and discharging module, the monitoring module displays information such as charging voltage, charging current, charging time, charging fault state and the like in real time after the self-checking process is finished, and stores the information so as to facilitate the derivation and analysis of the running state data of the device. In the discharging mode, the charging and discharging module converts the electric energy of the storage battery through the internal discharging circuit to realize the discharging of the storage battery.
It is worth mentioning that the distributed cascade charging and discharging device adopts a structural form that a plurality of charging and discharging modules are connected in series, so that the storage batteries with different SOC, SOH and internal resistance states can be charged and discharged in a targeted manner, meanwhile, the distributed cascade charging and discharging are adopted, the charging and discharging process of each storage battery is not influenced by whether each storage battery is balanced, and the distributed cascade charging and discharging does not need a matched voltage-sharing device, so that the use cost is reduced; the charging and discharging voltage grade of the charging and discharging module is low, no personal safety hazard exists, the failure rate is low, the occurrence of the failure of a single charging and discharging module only influences the charging and discharging module, and the normal work of other charging and discharging modules cannot be influenced; the use environment is effectively expanded, not only the storage batteries in a serial connection state can be charged and discharged, but also the storage batteries in a dispersion state can be charged and discharged, and the mobility of the storage batteries is improved, as shown in figure 1, the storage batteries can be connected in series and then connected into the charging and discharging module for charging, and meanwhile, the storage batteries can be separated and independently connected into the charging and discharging module for charging; the charge-discharge module adopted by the embodiment has small volume and weight, and is convenient to carry and expand a system; the storage battery aging delaying device can perform targeted charging and discharging on storage batteries in different states, effectively delay the aging of the storage batteries and prolong the service life of the storage batteries.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (5)
1. The utility model provides a dispersed cascade charge-discharge device which characterized in that: the intelligent charging and discharging system comprises a plurality of charging and discharging modules which are connected in series one by one through interconnected cables, wherein the input end of each charging and discharging module is connected with a monitoring module, each monitoring module comprises a control unit, a first sampling circuit, a first control circuit, a first communication circuit, a first display circuit and a first auxiliary power supply, and each charging and discharging module comprises an AC/DC conversion circuit, a discharging circuit, a second sampling circuit, a second communication circuit, a second display circuit, a second control circuit and a second auxiliary power supply.
2. The distributed cascade charge-discharge device according to claim 1, wherein: the control unit is used for the centralized control of the monitoring module, a sampling circuit is used for alternating current input sampling and ambient temperature sampling, a control circuit is used for controlling an alternating current output contactor of the monitoring module, a communication circuit is used for communication between a charging and discharging module and communication between external equipment, a display circuit is used for displaying working state information, and an auxiliary power supply is used for supplying power to the control unit I, the sampling circuit I, the control circuit I, the communication circuit I and the display circuit I.
3. The distributed cascade charge-discharge device according to claim 1, wherein: the output end of the charge-discharge module is connected with a storage battery.
4. The distributed cascade charge-discharge device according to claim 1, wherein: and the input end of the monitoring module is connected with an input cable for alternating current input.
5. The distributed cascade charge-discharge device according to claim 1, wherein: and the output end of the charge-discharge module and the input end of the storage battery are connected with a charging cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920394652.6U CN209929992U (en) | 2019-03-26 | 2019-03-26 | Dispersed cascade charge-discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920394652.6U CN209929992U (en) | 2019-03-26 | 2019-03-26 | Dispersed cascade charge-discharge device |
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| Publication Number | Publication Date |
|---|---|
| CN209929992U true CN209929992U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920394652.6U Active CN209929992U (en) | 2019-03-26 | 2019-03-26 | Dispersed cascade charge-discharge device |
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| CN (1) | CN209929992U (en) |
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2019
- 2019-03-26 CN CN201920394652.6U patent/CN209929992U/en active Active
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