CN218850457U - Energy storage direct current side high pressure conflux control circuit - Google Patents
Energy storage direct current side high pressure conflux control circuit Download PDFInfo
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- CN218850457U CN218850457U CN202223193910.5U CN202223193910U CN218850457U CN 218850457 U CN218850457 U CN 218850457U CN 202223193910 U CN202223193910 U CN 202223193910U CN 218850457 U CN218850457 U CN 218850457U
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Abstract
The utility model discloses an energy storage direct current side high voltage confluence control loop, which comprises a double power supply loop connected with the power input end of a BMS battery management system unit; the double power supply loop comprises an alternating current power supply loop and a direct current power supply loop; the alternating current power supply loop is connected with a mains supply, the direct current control loop is connected to a battery cluster managed by the BMS battery management system unit, and when the alternating current power supply loop is powered off, the direct current power supply loop connected to the battery cluster supplies power to the power input end of the BMS battery management system unit. The control circuit is under the circumstances of commercial power outage, by the battery cluster power supply, simultaneously, combine MBMS battery management unit to be management system in the BMS system, be responsible for the voltage acquisition of battery cluster, current acquisition, gather interior battery cell voltage and the temperature information of cluster, realize the protection on the spot and the relay control of battery cluster, utilize energy storage battery cluster not additionally to take up space for the BMS system power supply, the production low in manufacturing cost who sets up control circuit has realized function, cost and space utilization's compromise.
Description
Technical Field
The utility model relates to a control circuit especially relates to an energy storage direct current side high pressure control circuit that converges.
Background
According to the existing battery management system with the high voltage at the energy storage direct current side, under the condition that the mains supply is powered off, a control loop is powered off, so that the battery management system stops working, functions such as on-site protection and relay control of a battery cluster can not be realized by battery fault information, and in order to avoid power loss of the battery management system, the traditional mode is an external power supply, and the processing mode is large in occupied space and high in production and manufacturing cost. Therefore, a compromise in terms of function, cost and space utilization is required.
SUMMERY OF THE UTILITY MODEL
In order to solve the shortcomings of the prior art, the utility model provides an energy storage direct current side high-voltage confluence control loop.
In order to solve the technical problems, the technical scheme adopted by the utility model is an energy storage direct current side high voltage confluence control loop, which comprises a double power supply loop connected with the power input end of a BMS battery management system unit;
the double power supply loop comprises an alternating current power supply loop and a direct current power supply loop;
the alternating current power supply loop is connected with a mains supply, the direct current power supply loop is connected to a battery cluster managed by the BMS battery management system unit, and when the alternating current power supply loop is powered off, the direct current power supply loop connected to the battery cluster supplies power to the power input end of the BMS battery management system unit.
And the direct current control loop is connected with the battery cluster and controls the charging and discharging of the battery cluster by controlling the direct current control loop through the BMS battery management system unit.
Furthermore, the input voltage of the alternating current side of the alternating current power supply circuit is 220V, and an AC/DC conversion module for converting alternating current into direct current is connected in series in the alternating current power supply circuit.
Further, a DC/DC conversion module that converts the voltage of the battery cluster into a stable DC-side output voltage is connected in series in the DC power supply circuit, and the DC-side output voltage is 24V.
Furthermore, a first fuse is connected in series with the front end of the AC/DC conversion module in the AC power supply loop, and a first diode is connected in series with the rear end of the AC/DC conversion module and is connected to the power input end of the BMS battery management system unit through the first diode.
Furthermore, a second fuse is connected in series with the front end of the DC/DC conversion module in the DC power supply loop, and a second diode is connected in series with the rear end of the AC/DC conversion module and is connected to the power input end of the BMS battery management system unit through the second diode.
Further, the direct current control circuit comprises a main relay and a second fuse which are connected in series with the positive pole of the battery cluster, a shunt which is connected in series with the negative pole of the battery cluster, and direct current breakers which are arranged on the input side of the main relay and the output side of the shunt, wherein the main relay, the shunt and the direct current breakers are respectively connected in parallel on the BMS battery management system unit.
Furthermore, a pre-charging loop is connected in parallel to the main relay, and the pre-charging loop comprises a pre-charging relay and a pre-charging resistor which are connected in series.
Furthermore, the power input end of the BMS battery management system unit is connected with an emergency stop circuit in parallel, and an emergency stop switch and a coil which is positioned on the direct current breaker and controls the switch of the direct current breaker are connected in series in the emergency stop circuit.
The utility model discloses an energy storage direct current side high pressure control circuit that converges, the switching of automatic power when two power supply circuit realization exchanges the outage, under the circumstances of commercial power outage, by the power supply of battery cluster, and simultaneously, MBMS battery management unit is management system in the BMS system, is responsible for voltage acquisition, current acquisition, the interior monomer battery voltage and the temperature information of cluster of battery cluster, calculates states such as battery cluster SOC/SOH, carries out balanced strategy judgement and battery fault diagnosis function, realizes functions such as on-the-spot protection and relay control of battery cluster according to battery fault information; and the data communication of battery information and the control and protection of the energy storage battery cluster are realized. The energy storage battery cluster is utilized to supply power for the BMS system without additionally occupying space, the production and manufacturing cost for setting the control loop is low, and the consideration of function, cost and space utilization rate is realized.
Drawings
Fig. 1 is a circuit diagram of a control circuit according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The energy storage direct current side high voltage bus control loop as shown in fig. 1 comprises a dual power supply loop connected to the power input end of the BMS battery management system unit; the double power supply loop comprises an alternating current power supply loop and a direct current power supply loop;
the alternating current power supply loop is connected with a mains supply, the direct current power supply loop is connected to battery clusters G1-G12 managed by the BMS battery management system unit, and when the alternating current power supply loop is powered off, the direct current power supply loop connected to the battery clusters supplies power to the power input end of the BMS battery management system unit. Therefore, the utility model discloses an adopt dual power supply mode, guarantee that alternating current supply circuit does not cut off the power supply, ensure simultaneously under the commercial power outage, alternating current supply circuit can normally supply power.
In addition, the direct current control circuit is connected to the BMS battery management system unit and is connected with the battery clusters and controls the charging and discharging of the battery clusters through the direct current control circuit controlled by the BMS battery management system unit. The direct current control loop is used for ensuring the system safety, and can realize the functions of on-site protection, relay control and the like of the battery cluster according to the fault information of the battery cluster by being matched with a battery management system.
Specifically, the input voltage at the alternating current side of the alternating current power supply loop is 220V, and an AC/DC conversion module V01 for converting alternating current into direct current is connected in series in the alternating current power supply loop and is responsible for converting the 220V alternating current of the commercial power into 24V direct current. A first fuse F02 is connected in series with the front end of an AC/DC conversion module V01 in an alternating current power supply loop, electrical equipment in the circuit is protected from being damaged in the case of short circuit or overload, and a first diode V03 is connected in series with the rear end of the AC/DC conversion module and is connected to the power input end of a BMS battery management system unit through the first diode V03.
A DC/DC conversion module V02 for converting the voltage of the battery cluster into a stable DC-side output voltage is connected in series in the DC power supply circuit, and the DC-side output voltage is 24V. The front end of a DC/DC conversion module V02 in the direct current power supply loop is connected with a second fuse F04 in series, the same function of the same fuse F02 is the same, and the rear end of an AC/DC conversion module V01 is connected with a second diode V04 in series and is connected with the power supply input end of a BMS battery management system unit through the second diode V04.
The direct-current control circuit comprises a main relay KM1 and a second fuse F1 which are connected in series with the positive electrode of a battery cluster, a shunt FL1 which is connected in series with the negative electrode of the battery cluster, and a direct-current breaker Q1 which is arranged on the input side of the main relay KM1 and the output side of the shunt FL1, wherein a pre-charging circuit is connected in parallel on the main relay, and the pre-charging circuit comprises a pre-charging relay KM2 and a pre-charging resistor R1 which are connected in series with each other. The main relay KM1, the shunt FL1 and the direct current breaker FL1 are respectively connected in parallel to the BMS battery management system unit, and coils of the main relay KM1 and the pre-charging relay KM2 are controlled by the BMS battery management system unit. The pre-charging loop is used for pre-charging protection during battery charging setting, the main relay pre-charging loop of the KM1 is not attracted, the pre-charging loop formed by the pre-charging contactor KM2 and the pre-charging resistor R1 is connected firstly, and when the set value of the MBMS battery management system is met, the BMS battery management system unit controls the pre-charging contactor KM2 to be disconnected and the main contactor KM1 to be started; when the system breaks down or touches a protection alarm threshold, the main contactor is automatically disconnected, and the charging safety is ensured; the second fuse F1 is positioned at the front end of the positive electrode of the battery cluster and plays a role in protection when the current is overlarge; the current divider FL1 mainly converts the passing current into a signal which is matched with the MBMS module to finish the current collection; the direct current breaker has three-section protection function, provides instantaneous short circuit protection, delay short circuit protection and under-voltage protection, and can be directly tripped when the system voltage is unstable;
in addition, the power input end of the BMS battery management system unit is connected with an emergency stop circuit in parallel, an emergency stop switch S1 and a coil which is positioned on the direct current breaker and controls the direct current breaker to be switched off are connected in series in the emergency stop circuit, when the emergency stop switch S1 is switched off by remote control, the coil of the direct current breaker is powered off, and the direct current breaker is switched off to cut off the direct current control loop.
The utility model discloses a switching of automatic power supply when two power supply circuit realize alternating current outage, under the circumstances of commercial power outage, by the power supply of battery cluster, simultaneously, MBMS battery management unit is management system in the BMS system, is responsible for voltage acquisition, current acquisition, the interior battery voltage of gathering cluster and temperature information, state such as calculation battery cluster SOC/SOH, execution equilibrium strategy judge and battery failure diagnosis function, realize functions such as on-the-spot protection and relay control of battery cluster according to battery failure information; and the data communication of battery information and the control and protection of the energy storage battery cluster are realized.
The above embodiments are not intended to limit the present invention, the present invention is not limited to the above examples, and the technical personnel in the technical field are in the technical solution of the present invention, and the changes, modifications, additions or replacements made within the scope of the technical solution of the present invention also all belong to the protection scope of the present invention.
Claims (9)
1. The utility model provides an energy storage direct current side high pressure control circuit that converges which characterized in that: the battery management system comprises a double power supply loop connected to the power supply input end of a BMS battery management system unit;
the double power supply loop comprises an alternating current power supply loop and a direct current power supply loop;
the alternating current power supply loop is connected with a mains supply, the direct current power supply loop is connected to a battery cluster managed by the BMS battery management system unit, and when the alternating current power supply loop is powered off, the direct current power supply loop connected to the battery cluster supplies power to the power input end of the BMS battery management system unit.
2. The energy storage dc-side high voltage bus control circuit of claim 1, wherein: the direct current control loop is connected with the battery cluster and controls the charging and discharging of the battery cluster through the direct current control loop controlled by the BMS battery management system unit.
3. The energy storage dc-side high voltage bus control circuit of claim 1, wherein: the input voltage of the alternating current side of the alternating current power supply loop is 220V, and an AC/DC conversion module for converting alternating current into direct current is connected in series in the alternating current power supply loop.
4. The energy storage dc-side high voltage bus control circuit of claim 1, wherein: and a DC/DC conversion module for converting the voltage of the battery cluster into stable DC side output voltage is connected in series in the DC power supply loop, and the DC side output voltage is 24V.
5. The energy storage dc-side high voltage bus control circuit of claim 1 or 3, wherein: the front end of an AC/DC conversion module in the alternating current power supply loop is connected with a first fuse in series, and the rear end of the AC/DC conversion module is connected with a first diode in series and is connected with the power supply input end of the BMS battery management system unit through the first diode.
6. The energy storage direct current side high voltage bus control circuit according to claim 1 or 4, wherein: the front end of a DC/DC conversion module in the direct current power supply loop is connected with a second fuse in series, and the rear end of the AC/DC conversion module is connected with a second diode in series and is connected with the power supply input end of the BMS battery management system unit through the second diode.
7. The energy storage dc-side high voltage bus control circuit of claim 2, wherein: the direct current control circuit is in including establishing ties the anodal main relay and the second fuse of battery cluster establish ties the shunt of the negative pole of battery cluster to and set up in the direct current breaker of main relay input side and shunt output side, main relay, shunt, direct current breaker connect in parallel respectively on the BMS battery management system unit.
8. The energy storage dc side high voltage bus control circuit of claim 7, wherein: the main relay is connected with a pre-charging loop in parallel, and the pre-charging loop comprises a pre-charging relay and a pre-charging resistor which are connected in series.
9. The energy storage dc-side high voltage bus control circuit of claim 8, wherein: the power input end of the BMS battery management system unit is connected with an emergency stop circuit in parallel, and an emergency stop switch and a coil which is positioned on the direct current breaker and controls the switch of the direct current breaker are connected in series in the emergency stop circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223193910.5U CN218850457U (en) | 2022-11-30 | 2022-11-30 | Energy storage direct current side high pressure conflux control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223193910.5U CN218850457U (en) | 2022-11-30 | 2022-11-30 | Energy storage direct current side high pressure conflux control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218850457U true CN218850457U (en) | 2023-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223193910.5U Active CN218850457U (en) | 2022-11-30 | 2022-11-30 | Energy storage direct current side high pressure conflux control circuit |
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|---|---|
| CN (1) | CN218850457U (en) |
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- 2022-11-30 CN CN202223193910.5U patent/CN218850457U/en active Active
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