CN219513807U - High-voltage control box - Google Patents
High-voltage control box Download PDFInfo
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- CN219513807U CN219513807U CN202222558387.5U CN202222558387U CN219513807U CN 219513807 U CN219513807 U CN 219513807U CN 202222558387 U CN202222558387 U CN 202222558387U CN 219513807 U CN219513807 U CN 219513807U
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Abstract
The utility model discloses a high-voltage control box, which comprises: a battery interface externally connected with a battery module; the battery interface includes: a total positive loop function module and a total negative loop function module; the pre-charging loop functional module is used for switching the total negative loop functional module to realize stable transition of electric energy; the low-temperature charging and heating functional module is used for heating the battery module when the battery module is charged by external active power and the battery temperature is less than 0 ℃; the auxiliary power supply function module is externally connected with an external charger, and the external charger is used for supplementing electricity to the battery module; the fuel cell energy transmission function module is used for transmitting electric energy to the battery module; the starting switch functional module is used for controlling whether to supply power to the high-voltage control box; the control function module is used for carrying out logic judgment on the battery module at different working temperatures so as to realize stable operation of the battery module. The utility model can meet the requirements of multiple application scenes of heating, charging and discharging of the battery module under the condition of low temperature.
Description
Technical Field
The utility model relates to the field of power supplies, in particular to a high-voltage control box suitable for a full Wen Yuquan region energy storage system.
Background
Aiming at the characteristics of large day and night temperature difference and high altitude in northwest regions, the development of the industry and technology of photovoltaic digestion in northwest regions is a common key problem for restricting the development of economy and industry. Through the multi-energy complementary systems such as electricity storage, gas storage and gas-electricity conversion technology, a modularized digestion technical scheme capable of being copied in a large scale and products are formed, the technical economy of the battery system in different scenes is verified, however, the prior art cannot meet the requirements of multiple application scenes of heating, charging and discharging of the battery system under the low temperature condition. The aim of effectively promoting the development of new energy and the stability of a power grid in the high-cold high-altitude area under the double-carbon scene is difficult to realize.
Disclosure of Invention
The utility model aims to provide a high-voltage control box suitable for an energy storage system in a region of full Wen Yuquan, which is used for meeting the requirements of multiple application scenes of heating, charging and discharging of a battery system under the condition of low temperature. In order to achieve the above object, the present utility model is realized by the following technical scheme:
a high voltage control box suitable for use in an energy storage system in a region of full Wen Yuquan comprising: the battery interface is connected with the battery module of the energy storage system; the battery interface includes: a total positive loop function module 1 and a total negative loop function module 2; the pre-charging loop functional module 3 is connected with the battery interface and is used for switching the total negative loop functional module 2 to realize stable transition of electric energy; the low-temperature charging and heating functional module 4 is connected with the battery interface and is used for heating the battery module when the battery module is charged by external source and the temperature of the battery module is less than 0 ℃; and the auxiliary power supply functional module 5 is connected with the battery interface, and when the battery module is maintained and overhauled, the auxiliary power supply functional module 5 is externally connected with an external charger, and the external charger is used for supplementing electricity to the battery module. A fuel cell energy transfer function module 6 connected with the battery interface for transferring electric energy to the battery module; a control function module 7; a start switch function module 8 for starting or closing the high voltage control box;
the control function module 7 is respectively connected with the battery interface, the pre-charging loop function module 3, the low-temperature charging heating function module 4, the auxiliary power supply function module 5, the fuel cell energy transfer function module 6 and the starting switch function module 8 to control the operation of each module.
Optionally, the total positive loop functional module 1 includes: a battery total positive interface 32, a main positive fuse 100, an LEM current sensor 102, a total positive relay 101 and an external power positive interface 25 which are sequentially connected in series; and a total positive power diode 103 connected in parallel to both ends of the total positive relay 101;
the battery total positive interface 32 is used for connecting the positive electrode of the battery module; the external power positive interface 25 is used for connecting with the positive electrode of an external load.
The total negative loop function module 2 includes: a battery total negative interface 27, a main negative fuse 200, a shunt 201, a total negative relay 202 and an external power negative interface 26 which are sequentially connected in series; the battery total negative interface 27 is used for connecting the negative electrode of the battery module; the external power negative interface 26 is used for connecting with the negative electrode of the load. When the total positive relay 101 is closed, the battery module performs charge and discharge; when the total positive relay 101 is turned off, the battery module can only discharge through the total positive power diode 103.
Optionally, the precharge circuit function module 3 includes: a precharge relay 301 and a precharge resistor 302 connected in series; the series-connected pre-charging relay 301 and pre-charging resistor 302 are connected in parallel to two ends of the total negative relay 202 to form a pre-charging loop.
When the control function module 7 receives a discharging command of the battery module, the control function module 7 detects the battery terminal voltage and the connection load terminal voltage in real time, firstly closes the total positive relay 101, then closes the pre-charging relay 301, at this time, the battery terminal voltage and the connection load terminal voltage are conducted, and when the connection load terminal voltage and the battery terminal voltage tend to be consistent after the connection, the control function module 7 disconnects the pre-charging relay 301 and conducts the total negative relay 202, so that the total negative loop function module 2 realizes stable transition of electric energy.
Optionally, the low-temperature charging heating function module 4 includes: a heating interface 21, including a heating positive interface and a heating negative interface, for connecting a heating assembly in the battery module; a heating relay 401 and a heating fuse 402; the heating relay 401 is connected in series with the heating negative interface; the heating fuse 402 is connected in series with the heating positive interface; when the battery module needs to be charged and the temperature of the battery module is less than 0 ℃, the total positive relay 101 is disconnected, the total positive power diode 103 is conducted, so that the battery module is discharged outwards in a single-phase manner, and the heating relay 401 and the temporary power supply are supplied to a load; after the battery module is heated to more than 0 ℃, the total positive relay 101 is closed, and the total positive power diode 103 is connected with the total positive relay 101 in parallel to charge the battery module.
Optionally, the auxiliary power supply function module 5 includes: an auxiliary power supply interface 22, an auxiliary power supply fuse 500, an auxiliary diode 501; the auxiliary power supply interface 22 is used for externally connecting an external charger;
one end of the auxiliary diode 501 is connected with the auxiliary power supply interface 22, and the other end is respectively connected with the heating fuse 402 and the main negative relay 202; the auxiliary power supply fuse 500 is connected in series with the positive pole of the DCDC power supply 700 in the control function module 7; when the battery module is maintained and overhauled, the auxiliary diode 501 is conducted, and an external charger is used for supplementing electricity to the battery module.
Optionally, the fuel cell energy transfer function module 6 includes: a fuel cell power interface 23 and a fuel cell relay 600; one end of the fuel cell relay 600 is connected with the positive electrode of the fuel cell power supply interface 23, the other end is connected with the total positive relay 101, and the negative electrode of the fuel cell power supply interface 23 is respectively connected with the heating fuse 402 and the total negative relay 202;
the fuel cell power supply interface 23, the fuel cell relay 600, the total positive relay 101, the total positive power diode 103, the LEM current sensor 102, the main positive fuse 100, the shunt 201, the total negative relay 202 and the battery interface form a fuel cell and battery module energy connection loop, and the fuel cell power supply interface 23 is used for externally connecting a fuel cell and charging the battery module through the fuel cell and battery module energy connection loop.
Optionally, the control function module 7 includes: DCDC power supply 700, first control board 701, second control board 702, high voltage acquisition board 703; an internal communication interface 20, an external communication interface 24, an alarm indicator light 28 and an operation indicator light 29;
the negative pole of the DCDC power supply 700 is connected with the shunt 201, the output ends of the DCDC power supply are respectively connected with the first control board 701, the second control board 702, the high voltage acquisition board 703 and the internal communication interface 20;
the first control board 701 is respectively connected with the high-voltage acquisition board 703 and the external communication interface 24;
the first control board 701 is communicatively coupled to the LEM current sensor 102;
the high voltage acquisition board 703 is connected to the LEM current sensor 102 and the shunt 201, respectively; the first control board 701 is communicatively coupled to the second control board 702;
the second control board 702 is connected to the shunt 201, and the external communication interface 24 is connected to the internal communication interface 20;
the external communication interface 24 is connected with an energy management system and/or an energy control system of the energy storage system;
the second control board 702 controls the total positive loop functional module 1, the total negative loop functional module 2, the pre-charging loop functional module 3 and the low-temperature charging heating functional module 4 to work;
the alarm indicator light 28 and the operation indicator light 29 are respectively connected with the first control board 701; the warning indicator lamp 28 and the operation indicator lamp 29 are used for diagnosing the operating state of the battery module.
Optionally, the start switch function module 8 includes: a power-on air switch interface 30 and a start switch 31,
the power-on air switch interface 30 is connected with a power-on air switch in the power distribution cabinet;
the starting switch 31 is respectively connected with the power-on air switch interface 30 and the DCDC power supply 700;
the power-on air switch interface 30 and the starting switch 31 are closed at the same time, and the high-voltage control box can be powered on normally.
Optionally, the external load is an optical storage integrated machine, and further includes: the all-in-one relay 900 is connected with the main positive relay 101; the all-in-one relay 900 is closed to charge the battery module.
Optionally, a first wire slot 33 is arranged on the left side of the box 310, a second wire slot 34 is arranged on the right side of the box 310, and the connection harness of the control function module 7 is fixed in the box 310 through the first wire slot 33; the connecting wire harnesses of the total positive loop functional module 1, the total negative loop functional module 2, the pre-charging loop functional module 3, the low-temperature charging and heating functional module 4, the auxiliary power supply functional module 5 and the fuel cell energy transfer functional module 6 are fixed on the box body 310 through the second wire slot 34 so as to realize high-low voltage separation; the total positive loop functional module 1, the total negative loop functional module 2, the pre-charging loop functional module 3, the low-temperature charging and heating functional module 4 and the auxiliary power supply functional module 5 are arranged in the box body 310, the distance between the fuel cell energy transfer functional module 6 and the control functional module 7 and the inner side wall of the box body is the minimum electric gap, and the minimum electric gap is more than or equal to 20mm.
The utility model has one of the following advantages:
the high-voltage control box is suitable for an energy storage system in a region of full Wen Yuquan, is connected with the battery interface through the low-temperature charging and heating functional module 4 and is used for heating the battery module when the battery module is charged by external source and the temperature of the battery module is less than 0 ℃; and the requirements of multiple application scenes of heating, charging and discharging of the battery system under the condition of low temperature are met.
The utility model meets the auxiliary scene application such as the maintenance of a battery system, the temporary debugging requirement of external equipment and the like through an auxiliary power supply design (an auxiliary power supply functional module 5).
According to the utility model, through the design of the power-on air switch and the starting switch, the operation safety of personnel under remote debugging is ensured.
The utility model can realize the use of scenes with high altitude and wide temperature range through device selection, structure and electrical design, and can provide reference for the subsequent standardized and modularized design.
Drawings
Fig. 1 is a schematic perspective view of a high-voltage control box for an energy storage system applicable to a region of full Wen Yuquan according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of an interface of a high-voltage control box for an energy storage system applicable to a region of full Wen Yuquan according to an embodiment of the present utility model;
fig. 3 is a schematic physical structure diagram of an internal circuit of a high-voltage control box for an energy storage system applicable to a region of full Wen Yuquan according to an embodiment of the present utility model;
fig. 4 is a schematic diagram of an internal circuit principle structure of a high-voltage control box for an energy storage system applicable to a region of full Wen Yuquan according to an embodiment of the present utility model.
Detailed Description
The utility model provides a high-voltage control box for an energy storage system suitable for a full Wen Yuquan region, which is further described in detail below with reference to the accompanying drawings and the detailed description. The advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the utility model. For a better understanding of the utility model with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or essential characteristics thereof.
As shown in fig. 1 and 2, the present embodiment provides a high-voltage control box, which can be applied to an energy storage system in a region of Wen Yuquan. The high-pressure control box includes: the box 310 is provided with a plurality of interfaces on the box 310 respectively, and the interfaces at least comprise:
an internal communication interface (subnet interface) 20, a system heating interface 21, an auxiliary power supply interface 22, a fuel cell power supply interface 23, an external communication interface 24, an external power positive interface 25, an external power negative interface 26, a battery total negative interface 27, a battery total positive interface 32, a power-on air switch 30 and a start switch 31.
The box 310 is also provided with an alarm indicator light 28 and an operation indicator light 29.
As shown in fig. 3 and 4, the present embodiment further includes a control circuit board, so as to implement electrical connection with the above-mentioned interface.
The control circuit board includes: the battery interface is externally connected with a battery module (which can comprise a plurality of battery monomers) of the energy storage system; the energy storage system (battery system) may include an Energy Management System (EMS), an energy control system (PCS), which may be connected to a load. The battery interface includes: a total positive loop function module 1 and a total negative loop function module 2;
the total positive loop function module 1 includes: a battery total positive interface 32, a main positive fuse 100, an LEM current sensor 102, a total positive relay 101 and an external power positive interface 25 which are sequentially connected in series; and a total positive power diode 103 connected in parallel to both ends of the total positive relay 101 and having a single-phase conductive function.
The battery total positive interface 32 is used for connecting the positive electrode of an external battery module; the external power positive interface 25 is used for connecting with the positive electrode of an external load.
The total negative loop function module 2 includes: a battery total negative interface 27, a main negative fuse 200, a shunt 201, a total negative relay 202 and an external power negative interface 26 which are sequentially connected in series; the battery total negative interface 27 is used for connecting with the negative electrode of an external battery module; the external power negative interface 26 is used for connecting with a negative electrode of an external load.
When the total positive relay 101 is closed, the battery module performs charge and discharge; when the total positive relay 101 is turned off, the battery module can only discharge through the total positive power diode 103.
In this embodiment, the external load may be an optical storage integrated machine of an energy storage system, and further includes: the all-in-one relay 900 is connected with the main positive relay 101; the integrated machine relay 900 is closed, and the light storage integrated machine can charge the battery module. The electric energy after the light energy is converted into the electric energy is transmitted to the battery module for storage.
The above total positive loop functional module 1 and the total negative loop functional module 2 realize a transfer loop path of electric energy of the battery system, wherein the battery total positive interface 32, the external power positive interface 25, the battery total negative interface 27 and the external power negative interface 26 are high-voltage connectors for connecting a battery and a load; the active positive fuse 100 and the active negative fuse 200 are passive short-circuit prevention devices; the LEM current sensor 102 and the shunt 201 are current collection devices; the total positive relay 101 and the total negative relay 202 are switching control devices.
With continued reference to fig. 4, the present embodiment further includes a pre-charge circuit function module 3 connected to the battery interface for switching the total negative circuit function module 2 to achieve a smooth transition of electric energy.
The precharge circuit function module 3 includes: a precharge relay 301 and a precharge resistor 302 connected in series; the series-connected pre-charging relay 301 and pre-charging resistor 302 are connected in parallel to two ends of the total negative relay 202 to form a pre-charging loop.
After receiving a discharging command (discharging requirement) sent by the battery module (or the energy management system or the energy control system), the control function module 7 controls the total positive relay 101 to be closed firstly, then the pre-charging relay 301 to be closed, at this time, the battery terminal voltage (the battery module terminal voltage) and the voltage of the connecting load terminal (the voltage of the battery total negative interface 27 and the voltage of the external power negative interface 26 port) are conducted, the voltage of the connecting load terminal after the connection is gradually consistent with the voltage of the battery terminal from 0V, when the internal voltage and the external voltage are basically consistent (i.e. the voltage of the connecting load terminal is more than 98% of the voltage of the battery terminal), the pre-charging relay 301 is disconnected by the control function module 7, and the total negative relay 202 is conducted, so that the total negative loop function module 2 realizes stable transition of electric energy, and plays a role in alleviating current impact at the moment of system opening. In this embodiment, the battery module may discharge to the energy control system, which charges the load.
With continued reference to fig. 4, the present embodiment further includes a low-temperature charging and heating function module 4 connected to the battery interface for heating the battery module when the battery module is charged by external power and the temperature of the battery module (battery cell) is less than 0 ℃.
The low-temperature charging and heating functional module 4 includes: the heating interface 21, including a heating positive interface and a heating negative interface, is used for connecting the heating assembly in the battery box (battery module).
A heating relay 401 and a heating fuse 402; the heating relay 401 is connected in series with the heating negative interface and is used for heating the battery module; the heating fuse 402 is connected in series with the heating positive interface for short-circuit protection of the battery module heating circuit.
When the battery module needs to be charged, however, when the temperature of the battery module is less than 0 ℃, the total positive relay 101 is disconnected, and the unidirectional conduction function of the total positive power diode 103 enables the battery module to discharge outwards in a single-phase manner, so as to supply power to the heating relay 401 and the temporary load; after the battery module is heated to more than 0 ℃, the total positive relay 101 is closed, and the total positive power diode 103 is connected with the total positive relay 101 in parallel to charge the battery module.
Because the power diode 103 has a single-phase conductive function, when the temperature of the battery is less than 0 ℃ under the low temperature condition, the system is not allowed to charge the battery, and the normal charge and discharge actions can be carried out only after the battery is heated to more than 0 ℃, and because the power diode is arranged, the battery can be discharged outside in a single phase on one hand, so that the heating of the system and the temporary load electric energy supply are ensured; on the other hand, when the external source charges the battery, the system can automatically switch to a heating mode, firstly heat the battery, and then realize the function of charging the battery at low temperature after the charging condition is met. The module is particularly applied to the requirements of multiple application scenes of heating, charging and discharging of the battery system under the condition of low temperature. Wherein the heating interface 21 is a connector for connecting a heating component in the battery box; 200A power diode 103 is a single-phase on device; the heating relay is a switch control device; the heating fuse is a short-circuit protection device.
With continued reference to fig. 4, the embodiment further includes an auxiliary power supply functional module 5 connected with the battery interface, where the auxiliary power supply functional module 5 is externally connected with an external charger, and the external charger is used to supplement power to the battery module when the battery module is maintained and overhauled.
The auxiliary power supply function module 5 includes: an auxiliary power supply interface 22, an auxiliary power supply fuse 500, an auxiliary diode 501; the auxiliary power supply interface 22 is used for externally connecting an external charger. One end of the auxiliary diode 501 is connected to the auxiliary power supply interface 22, and the other end is connected to the heating fuse 402 and the total negative relay 202, respectively. The auxiliary power supply fuse 500 is connected in series with the positive pole of the DCDC power supply (24V high voltage power supply) 700 in the control function module 7.
When the battery module is maintained, the auxiliary diode 501 is turned on, and an external charger is used for supplementing electricity to the battery module.
The module 5 is directly connected with a battery system (a battery module) and can realize the electricity supplementing of the battery by an external charger when the battery is maintained and overhauled; and in normal use, the method directly provides the external DCDC equipment with functional applications such as low-power electric energy and the like. Wherein the auxiliary power supply interface 22 is an electrical connection connector; the auxiliary power supply fuse is a short-circuit protection device; the auxiliary power supply relay is a switch control device.
With continued reference to fig. 4, the present embodiment further includes a fuel cell power transfer function module 6 connected to the battery interface for transferring electric power to the battery module.
The fuel cell energy transfer function module 6 includes: a fuel cell power interface 23 and a fuel cell relay 600; one end of the fuel cell relay 600 is connected with the positive electrode of the fuel cell power supply interface 23, the other end is connected with the total positive relay 101, and the negative electrode of the fuel cell power supply interface 23 is connected with the heating fuse 402 and the total negative relay 202 respectively.
The fuel cell power supply interface 23, the fuel cell relay 600, the total positive relay 101, the total positive power diode 103, the LEM current sensor 102, the main positive fuse 100, the shunt 201, the total negative relay 202 and the battery interface form a fuel cell and battery module energy connection loop, and the fuel cell power supply interface 23 is used for externally connecting a fuel cell and charging the battery module through the fuel cell and battery module energy connection loop. Specifically, the energy generated by burning hydrogen energy is converted into electric energy and then transmitted to the battery module for charging and storing.
With continued reference to fig. 4, the present embodiment further includes a control function module 7 for making logic decisions on the battery module at different operating temperatures to achieve stable operation of the battery module.
The control function module 7 includes: DCDC power supply 700, first control board 701, second control board 702, high voltage acquisition board 703; an internal communication interface 20 and an external communication interface 24. An alarm indicator light 28 and an operation indicator light 29.
The negative pole of the DCDC power supply 700 is connected to the shunt 201, the output end thereof is connected to the first control board 701, the second control board 702, and the high voltage collecting board 703 is connected to the internal communication interface (subnet interface) 20. The DCDC power supply 700 provides 24V power to the battery box internal daughter board of the battery module through the internal communication interface 20, and the second control board 702 communicates with the battery box internal daughter board through the internal CAN bus. In this embodiment, the battery module and the inner sub-board of the battery box may be any battery module and the inner sub-board of the battery box in the prior art, which are not described herein.
The shunt 201 is used for transmitting current information of the battery module during charging and discharging to the second control board 702; the first control board 701 is respectively connected with the high-voltage acquisition board 703 and the external communication interface 24;
the first control board 701 is communicatively coupled to the LEM current sensor 102;
the high voltage acquisition board 703 is connected to the LEM current sensor 102 and the shunt 201, respectively; the first control board 701 is communicatively coupled to the second control board 702;
the first control board 701 acquires the battery terminal voltage and the connection load terminal voltage from the high voltage acquisition board 703 in real time.
The first control board 701 acquires current information of the battery system from the LEM current sensor 102 in real time; the first control board 701 is configured to perform logic judgment on the battery terminal voltage, the connection load terminal voltage, and the current information of the battery system according to a preset standard, obtain a judgment result, and send the logic judgment result to the second control board 702, where the second control board 702 issues an execution command according to the logic judgment result.
The logic judgment may be that, according to the received battery terminal voltage and the connection load terminal voltage, it is judged that the voltage is higher than a preset standard, and it is indicated that the functional modules related to the battery terminal voltage and the connection load terminal voltage (for example, the battery terminal voltage is abnormal, the total positive loop functional module 1 and the total negative loop functional module 2 are abnormal, the load terminal voltage is abnormal, the external power positive interface 25 and the external power negative interface 26 are abnormal), and the result is notified to the second control board 702, and the second control board 702 does not issue an execution command, and other components do not work.
The logic judgment may be that, according to the received battery terminal voltage and the received connection load terminal voltage, the voltage is lower than a preset standard, which indicates that the functional modules related to the battery terminal voltage and the connection load terminal voltage (for example, the battery terminal voltage is normal, the total positive loop functional module 1 and the total negative loop functional module 2 are normal, the load terminal voltage is normal, and then the external power positive interface 25 and the external power negative interface 26 are normal), and the result is notified to the second control board 702, and then the second control board 702 issues a corresponding execution command, and other components execute the command to perform a corresponding operation.
The first control board 701 can know whether the battery system or the energy storage system is normal according to the current information, and determines whether the second control board 702 works. That is, the first control board 701 is only used to logically determine the state of the corresponding components of the high voltage control box or the battery system or the energy storage system to which the high voltage control box is applied, and is not used to issue an execution command to control the operation of the modules included in the high voltage control box.
The second control board 702 is connected to the shunt 201, and the external communication interface 24 is connected to the internal communication interface 20; the second control board 702 obtains current information of the battery module during charging and discharging from the shunt 201;
the external communication interface 24 is connected with an energy management system and/or an energy control system of the energy storage system;
the energy management system and/or the energy control system send a start-up message to the second control board 702, and after the self-test is normal, the second control board 702 feeds back a start-up success message to the energy management system and/or the energy control system.
The energy management system and/or energy control system sends a load demand (load demand may also be referred to as a discharge demand, e.g., how much voltage, power, or current the load requires) to the second control board 702; the second control board 702 sends an execution command to the corresponding total positive loop functional module 1 according to the load demand, and the total negative loop functional module 2 and the pre-charge loop functional module 3 work; specifically, the second control board 702 controls the total positive relay 101 to be closed, the pre-charging relay 301 to be closed, the total negative relay 202 to be closed, the pre-charging relay 301 to be opened, the battery module to discharge the PCS, and the PCS to charge the load.
The energy management system and/or the energy control system sends a battery demand (for example, a charging demand-a battery cell voltage, and a low temperature demand-may be determined by the first control board 701 according to the acquired temperature information logic of the battery module) to the second control board 702, and the second control board 702 controls the operation of the total positive loop function module 1, the total negative loop function module 2 and the low temperature charging and heating function module 4 according to the battery demand.
Specifically, when the energy management system and/or the energy control system send a charging requirement to the second control board 702, the first control board 701 determines the temperature of the battery module, and when the battery module meets a temperature condition of direct charging, the second control board 702 controls the total positive relay 101 to be closed, and the total negative relay 202 to be closed, so as to charge the battery module.
When the energy management system and/or the energy control system send a charging demand to the second control board 702, the temperature of the battery module is determined, when the battery module does not meet a temperature condition of direct charging, the second control board 702 controls the heating relay 401 to be closed to heat the battery module, when the battery module meets a temperature condition of charging (for example, the temperature of the battery module is greater than 0 ℃), the total negative relay 202 is closed, the total positive relay 101 is closed, the battery module is charged, and when the temperature of the battery module is greater than 5 ℃, the heating relay 401 is opened.
The internal communication interface 20 is used for collecting all cell voltage and cell temperature information; the DCDC power supply 700 is used to power low voltage devices in the high voltage tank.
The second control board 702 is used for collecting the voltage and the temperature of the single battery cell in the battery box; the first control board 701 is used for realizing high-voltage relay control in a high-voltage control box, diagnosing the working state of the battery module, and performing external information interaction and instructions.
An alarm indicator light 28 and an operation indicator light 29 for diagnosing the operation state of the battery module; the alarm indicator lamp 28 and the running indicator lamp 29 are directly connected with the first control board 701 and are directly controlled by the first control board 701, when the first control board 701 is powered on normally and self-checking is error-free, the running indicator lamp 29 lights a green light, when a battery system (an energy storage system) operates normally, the alarm indicator lamp 28 lights a green light when no alarm or fault exists in the battery system, and when the battery system is abnormal, the alarm indicator lamp 28 lights a red light.
With continued reference to fig. 4, the present embodiment further includes an activation switch function 8 for controlling whether to supply power to the high voltage control box.
The start switch function module 8 includes: the power-on air switch comprises a power-on air switch interface 30 and a starting switch 31, wherein the power-on air switch interface 30 is connected with a power-on air switch in a power distribution cabinet; the starting switch 31 is respectively connected with the power-on air switch interface 30 and the DCDC power supply 700; the power-on air switch interface 30 and the starting switch 31 are closed at the same time, and the high-voltage control box can be powered on normally.
The power-on air switch is arranged in the power distribution cabinet, extra personnel are needed to participate in operation, and the system can be powered on normally only by closing the power-on air switch interface and the starting switch at the same time. Especially during equipment debugging, a first person closes a power-on idle switch on a remote power distribution cabinet according to a power-on sequence, a debugging person closes a starting switch again, a multi-control starting action is set, and the operation safety of the person under remote debugging is ensured. Wherein the power-on air switch interface is an electric connection connector; the starting switch is a manual switch; the DCDC power supply is a high voltage dc to low voltage dc 24V.
In this embodiment, a first wire slot 33 is provided on the left side of the box 310, a second wire slot 34 is provided on the right side, and the connection harness of the control function module 7 is fixed in the box 310 through the first wire slot 33; the connecting wire harnesses of the total positive loop functional module 1, the total negative loop functional module 2, the pre-charging loop functional module 3, the low-temperature charging heating functional module 4, the auxiliary power supply functional module 5 and the fuel cell energy transfer functional module 6 are fixed on the box body 310 through the second wire slot 34 so as to realize high-low voltage separation. The total positive loop functional module 1, the total negative loop functional module 2, the pre-charging loop functional module 3, the low-temperature charging and heating functional module 4 and the auxiliary power supply functional module 5 are arranged in the box body 310, the distance between the fuel cell energy transfer functional module 6 and the control functional module 7 and the inner side wall of the box body is the minimum electric gap, and the minimum electric gap is more than or equal to 20mm.
In the embodiment, the working temperature of the selected device meets the wide temperature requirement of-40 ℃ to 85 ℃, and the selected device can be the use condition for the whole temperature range and the whole region.
The high-voltage device selected in the high-voltage box meets the requirements of GBT19635.1-2008 on the electric gap correction coefficient of 1.48 at an altitude of 5000 meters in structural design, and the minimum requirements of 14.8mm on the electric gap and the creepage distance are met under the condition that the pollution level of a 1000V system is three-level. The structural design of the high-voltage box keeps the minimum electric gap more than or equal to 20mm, and meets the long-term use requirement under the rated power condition in use.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the description of the present utility model, it should be understood that the terms "center," "height," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
While the present utility model has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the utility model. Many modifications and substitutions of the present utility model will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the utility model should be limited only by the attached claims.
Claims (10)
1. The utility model provides a high pressure control case is applicable to the energy storage system in full Wen Yuquan region, its characterized in that includes:
the battery interface is connected with the battery module of the energy storage system; the battery interface includes: a total positive loop function module (1) and a total negative loop function module (2);
the pre-charging loop functional module (3) is connected with the battery interface and is used for switching the total negative loop functional module (2) to realize stable transition of electric energy;
the low-temperature charging and heating functional module (4) is connected with the battery interface and is used for heating the battery module when the battery module is charged by external active power and the temperature of the battery module is less than 0 ℃;
the auxiliary power supply functional module (5) is connected with the battery interface, and when the battery module is maintained and overhauled, the auxiliary power supply functional module (5) is externally connected with an external charger, and the external charger is used for supplementing electricity to the battery module;
a fuel cell energy transfer function module (6) connected with the battery interface and used for transferring electric energy to the battery module;
a control function module (7);
a starting switch functional module (8) for starting or closing the high-voltage control box;
the control function module (7) is respectively connected with the battery interface, the pre-charging loop function module (3), the low-temperature charging heating function module (4), the auxiliary power supply function module (5), the fuel cell energy transfer function module (6) and the starting switch function module (8) and is used for carrying out logic judgment on the battery module at different working temperatures so as to realize stable operation of the battery module.
2. The high-voltage control box according to claim 1, characterized in that the total positive-loop functional module (1) comprises: a battery total positive interface (32), a main positive fuse (100), an LEM current sensor (102), a total positive relay (101) and an external power positive interface (25) which are sequentially connected in series; and a total positive power diode (103) connected in parallel to both ends of the total positive relay (101);
the battery total positive interface (32) is used for connecting the positive electrode of the battery module; the external power positive interface (25) is used for connecting an anode of an external load;
the total negative loop function module (2) comprises: a battery total negative interface (27), a main negative fuse (200), a shunt (201), a total negative relay (202) and an external power negative interface (26) which are sequentially connected in series;
the battery total negative interface (27) is used for connecting the negative electrode of the battery module; the external power negative interface (26) is used for connecting a negative electrode of a load;
when the total positive relay (101) is closed, the battery module performs charge and discharge; when the total positive relay (101) is opened, the battery module can only discharge through the total positive power diode (103).
3. The high-voltage control box according to claim 2, characterized in that the pre-charge circuit functional module (3) comprises: a precharge relay (301) and a precharge resistor (302) connected in series; the pre-charging relay (301) and the pre-charging resistor (302) which are connected in series are connected in parallel to the two ends of the total negative relay (202) to form a pre-charging loop;
when the control function module (7) receives a discharging command of the battery module, the control function module (7) detects battery terminal voltage and connection load terminal voltage in real time, the total positive relay (101) is firstly closed, then the pre-charging relay (301) is closed, at the moment, the battery terminal voltage and the connection load terminal voltage are conducted, and when the connection load terminal voltage and the battery terminal voltage tend to be consistent after the connection load terminal voltage and the connection load terminal voltage are conducted, the control function module (7) disconnects the pre-charging relay (301), and conducts the total negative relay (202) so that the total negative loop function module (2) realizes stable transition of electric energy.
4. A high voltage control box according to claim 3, characterized in that the low temperature charging heating function module (4) comprises: the heating interface (21) comprises a heating positive interface and a heating negative interface and is used for connecting a heating assembly in the battery module;
a heating relay (401) and a heating fuse (402);
the heating relay (401) is connected in series with the heating negative interface;
the heating fuse (402) is connected in series with the heating positive interface;
when the battery module needs to be charged and the temperature of the battery module is less than 0 ℃, the total positive relay (101) is disconnected, and the total positive power diode (103) is conducted, so that the battery module is discharged outwards in a single-phase manner, and the heating relay (401) and the load are temporarily powered; after the battery module is heated to more than 0 ℃, the total positive relay (101) is closed, and the total positive power diode (103) is connected with the total positive relay (101) in parallel to charge the battery module.
5. The high voltage control box according to claim 4, characterized in that the auxiliary power function module (5) comprises: an auxiliary power supply interface (22), an auxiliary power supply fuse (500), an auxiliary diode (501);
the auxiliary power supply interface (22) is used for externally connecting an external charger;
one end of the auxiliary diode (501) is connected with an auxiliary power supply interface (22), and the other end of the auxiliary diode is respectively connected with the heating fuse (402) and the main negative relay (202);
the auxiliary power supply fuse (500) is connected in series with the positive pole of the DCDC power supply (700) in the control function module (7);
when the battery module is maintained and overhauled, the auxiliary diode (501) is conducted, and an external charger is used for supplementing electricity to the battery module.
6. The high-voltage control box according to claim 5, characterized in that the fuel cell energy transfer function module (6) comprises: a fuel cell power interface (23) and a fuel cell relay (600); one end of the fuel cell relay (600) is connected with the positive electrode of the fuel cell power supply interface (23), the other end of the fuel cell relay is connected with the total positive relay (101), and the negative electrode of the fuel cell power supply interface (23) is respectively connected with the heating fuse (402) and the total negative relay (202);
the energy-saving device comprises a fuel cell power supply interface (23), a fuel cell relay (600), a total positive relay (101), a total positive power diode (103), an LEM current sensor (102), a main positive fuse (100), a shunt (201), a total negative relay (202) and the battery interface form a fuel cell and battery module energy connection loop, and the fuel cell power supply interface (23) is used for externally connecting a fuel cell and charging the battery module through the fuel cell and battery module energy connection loop.
7. The high-voltage control box according to claim 6, characterized in that the control function module (7) comprises: a DCDC power supply (700), a first control board (701), a second control board (702), a high voltage acquisition board (703); an internal communication interface (20), an external communication interface (24), an alarm indicator light (28) and an operation indicator light (29);
the negative electrode of the DCDC power supply (700) is connected with the shunt (201), the output end of the DCDC power supply is respectively connected with the first control board (701), the second control board (702), and the high-voltage acquisition board (703) is connected with the internal communication interface (20);
the first control board (701) is respectively connected with the high-voltage acquisition board (703) and the external communication interface (24);
-said first control board (701) is in communication with said LEM current sensor (102);
the high-voltage acquisition board (703) is respectively connected with the LEM current sensor (102) and the shunt (201); -said first control board (701) and said second control board (702) are communicatively connected;
the second control board (702) is respectively connected with the shunt (201), and the external communication interface (24) and the internal communication interface (20);
the external communication interface (24) is connected with an energy management system and/or an energy control system of the energy storage system;
the second control board (702) controls the total positive loop functional module (1), the total negative loop functional module (2), the pre-charging loop functional module (3) and the low-temperature charging and heating functional module (4) to work;
the alarm indicator lamp (28) and the running indicator lamp (29) are respectively connected with the first control panel (701); the alarm indicator lamp (28) and the running indicator lamp (29) are used for diagnosing the working state of the battery module.
8. The high voltage control box according to claim 7, characterized in that the start switch function (8) comprises: a power-on air-break interface (30) and a start switch (31),
the power-on air switch interface (30) is connected with a power-on air switch in the power distribution cabinet;
the starting switch (31) is respectively connected with the power-on air-break interface (30) and the DCDC power supply (700);
the power-on air switch interface (30) and the starting switch (31) are simultaneously closed, and the high-voltage control box can be powered on normally.
9. The high voltage control box of claim 8, wherein the external load is an optical storage all-in-one machine, further comprising: the all-in-one relay (900) is connected with the main positive relay (101); and the integrated machine relay (900) is closed to charge the battery module.
10. The high-voltage control box according to claim 9, characterized in that a box body (310) is provided with a first wire groove (33) on the left side of the box body (310), a second wire groove (34) on the right side, and a connecting wire harness of the control function module (7) is fixed in the box body (310) through the first wire groove (33); the connecting wire harnesses of the total positive loop functional module (1), the total negative loop functional module (2), the pre-charging loop functional module (3), the low-temperature charging heating functional module (4), the auxiliary power supply functional module (5) and the fuel cell energy transmission functional module (6) are fixed on the box body (310) through the second wire slot (34) so as to realize high-low voltage separation; the total positive loop functional module (1), the total negative loop functional module (2), the pre-charging loop functional module (3), the low-temperature charging heating functional module (4) and the auxiliary power supply functional module (5), the distance between the fuel cell energy transfer functional module (6) and the control functional module (7) and the inner side wall of the box body (310) is the minimum electric gap, and the minimum electric gap is more than or equal to 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222558387.5U CN219513807U (en) | 2022-09-27 | 2022-09-27 | High-voltage control box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222558387.5U CN219513807U (en) | 2022-09-27 | 2022-09-27 | High-voltage control box |
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| CN219513807U true CN219513807U (en) | 2023-08-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477362A (en) * | 2023-12-26 | 2024-01-30 | 湖南湘电绿能智控有限公司 | High-voltage control cabinet and temperature control system thereof |
| CN119362659A (en) * | 2024-12-24 | 2025-01-24 | 浙江中科立德新材料有限公司 | Energy storage control circuit and device |
| WO2025189991A1 (en) * | 2024-03-15 | 2025-09-18 | 华为数字能源技术有限公司 | Cluster control box for battery cluster, and energy storage device |
-
2022
- 2022-09-27 CN CN202222558387.5U patent/CN219513807U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477362A (en) * | 2023-12-26 | 2024-01-30 | 湖南湘电绿能智控有限公司 | High-voltage control cabinet and temperature control system thereof |
| CN117477362B (en) * | 2023-12-26 | 2024-03-15 | 湖南湘电绿能智控有限公司 | High-voltage control cabinet and temperature control system thereof |
| WO2025189991A1 (en) * | 2024-03-15 | 2025-09-18 | 华为数字能源技术有限公司 | Cluster control box for battery cluster, and energy storage device |
| CN119362659A (en) * | 2024-12-24 | 2025-01-24 | 浙江中科立德新材料有限公司 | Energy storage control circuit and device |
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