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CN113346587B - Isolation breaking method, device and power supply system - Google Patents

Isolation breaking method, device and power supply system Download PDF

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Publication number
CN113346587B
CN113346587B CN202110645519.5A CN202110645519A CN113346587B CN 113346587 B CN113346587 B CN 113346587B CN 202110645519 A CN202110645519 A CN 202110645519A CN 113346587 B CN113346587 B CN 113346587B
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China
Prior art keywords
module
isolation
breaking
control
current
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CN202110645519.5A
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Chinese (zh)
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CN113346587A (en
Inventor
徐鹏飞
封森
赵佳航
王健鹏
李峰
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Shanghai Sermatec Energy Technology Co ltd
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Shanghai Sermatec Energy Technology Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The embodiment of the application provides an isolation breaking method, an isolation breaking device and a power supply system, wherein the method is applied to a control module of the isolation breaking device, the isolation breaking device further comprises a current detection module and an isolation breaking module which are connected with the control module, and the isolation breaking module is connected to a charge-discharge loop for protecting a battery cluster and equipment to be powered; after the current value on the charge-discharge loop detected by the current detection module is obtained, an isolation control instruction is generated based on the current value, and the isolation control instruction is sent to the isolation breaking module to control the isolation breaking module to break the charge-discharge loop, so that the protection battery cluster and the equipment to be powered are isolated. According to the method and the device, the isolation control instruction can be generated according to the current value on the loop where the protection battery cluster is located, the isolation breaking module is controlled to timely isolate the protection battery cluster from the equipment to be powered, and fire loss caused by the fact that the protection battery cluster cannot be timely broken is effectively avoided.

Description

Isolation breaking method, device and power supply system
Technical Field
The invention relates to the technical field of electric energy storage, in particular to a method and a device for isolating and breaking and a power supply system.
Background
Under the large background of 'double carbon', the energy storage power station projects show explosive growth, and the safety is always a pain point of an energy storage system, and also directly restricts the development of the energy storage power station. The safety accidents of the domestic and foreign energy storage systems/power stations are often caused by short circuit of the battery clusters due to lack of effective safety protection measures and misoperation of installation and operation debugging personnel in the system installation and debugging stage, the battery clusters are not timely broken, initial fire disasters rapidly spread, the initial fire disasters of the batteries cannot be effectively restrained, and finally the initial fire disasters evolve into large-scale fires, so that the whole energy storage container or the energy storage power station is burnt, and serious economic loss is caused.
Disclosure of Invention
In view of the above, the present invention aims to provide a method, an apparatus and a power supply system for isolating and breaking, which effectively alleviate the above technical problems.
In a first aspect, an embodiment of the present invention provides a method for isolating and breaking, where the method is applied to a control module of an isolating and breaking device, where the isolating and breaking device further includes a current detection module and an isolating and breaking module connected to the control module, where the isolating and breaking module is connected to a charge-discharge circuit for protecting a battery cluster and a device to be powered; the method comprises the following steps: acquiring a current value on a charge-discharge loop detected by a current detection module; generating an isolation control instruction based on the current value; and sending an isolation control instruction to the isolation breaking module to control the isolation breaking module to break the charging and discharging loop, so that the battery cluster and the equipment to be powered are protected from breaking isolation.
The isolation control instruction is a first control instruction or a second control instruction; a step of generating an isolation control command based on the current value, comprising: judging whether the current value meets a preset first current threshold range or not; if yes, generating a first control instruction; if not, judging whether the current value meets a preset second current threshold range; if so, a second control instruction is generated.
The isolation breaking module comprises a tripping protection unit and a fusing protection unit; the method comprises the steps of sending an isolation control instruction to an isolation breaking module to control the isolation breaking module to break a charging and discharging loop, and comprises one of the following steps: a first control instruction is sent to a tripping protection unit of the isolation breaking module so as to control the tripping protection unit to break a charging and discharging loop; or sending a second control instruction to the tripping protection unit and the fusing protection unit of the isolation breaking module to control the tripping protection unit and the fusing protection unit to disconnect the charging and discharging loop.
The isolation breaking device further comprises a communication interface module connected with the control module, wherein the communication interface module is used for being connected with an external battery control system; the method further includes, prior to generating the isolation control command based on the current value: judging whether the current value meets a preset third current threshold range or not; if not, executing the step of judging whether the current value meets the preset first current threshold range; if yes, generating a first current alarm signal; and sending the first current alarm signal to an external battery control system through the communication interface module.
The method further comprises the following steps: if the current value is judged to meet the preset first current threshold range, generating a second current alarm signal; and sending the second current alarm signal to an external battery control system through the communication interface module.
The method further comprises the following steps: if the current value is judged to meet the preset second current threshold range, generating a third current alarm signal; and sending the third current alarm signal to an external battery control system through the communication interface module.
In a second aspect, the embodiment of the invention further provides an isolation breaking device, wherein the device is applied to a control module of the isolation breaking device, the isolation breaking device further comprises a current detection module and an isolation breaking module which are connected with the control module, and the isolation breaking module is connected to a charge-discharge loop for protecting a battery cluster and equipment to be powered; the device comprises: the acquisition module is used for acquiring the current value on the charge and discharge loop detected by the current detection module; the generation module is used for generating an isolation control instruction based on the current value; the transmission module is used for transmitting the isolation control instruction to the isolation breaking module so as to control the isolation breaking module to break the charge and discharge loop, so that the battery cluster and the equipment to be powered are protected from breaking isolation.
In a third aspect, the embodiment of the invention further provides a power supply system, wherein the power supply equipment comprises an isolation breaking device, a protection battery cluster and equipment to be powered; the isolation breaking device comprises a control module, a current detection module and an isolation breaking module, wherein the current detection module and the isolation breaking module are connected with the control module, and the isolation breaking module is connected on a charge-discharge loop for protecting a battery cluster and equipment to be powered; the control module is used for the isolation breaking method.
The isolation breaking device also comprises a communication interface module connected with the control module; the control module is connected with an external battery control system through the communication interface module.
The isolation breaking device also comprises a standby power supply connected with the control module; the standby power supply is used for providing electric energy for the control module.
The embodiment of the invention has the following beneficial effects:
the embodiment of the application provides an isolation breaking method, an isolation breaking device and a power supply system, wherein the method is applied to a control module of the isolation breaking device, the isolation breaking device further comprises a current detection module and an isolation breaking module which are connected with the control module, and the isolation breaking module is connected to a charge-discharge loop for protecting a battery cluster and equipment to be powered; after the current value on the charge-discharge loop detected by the current detection module is obtained, an isolation control instruction is generated based on the current value, and the isolation control instruction is sent to the isolation breaking module to control the isolation breaking module to break the charge-discharge loop, so that the protection battery cluster and the equipment to be powered are isolated. According to the method and the device, the isolation control instruction can be generated according to the current value on the loop where the protection battery cluster is located, the isolation breaking module is controlled to timely isolate the protection battery cluster from the equipment to be powered, and fire loss caused by the fact that the protection battery cluster cannot be timely broken is effectively avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an isolation breaking device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power supply circuit connection according to an embodiment of the present invention;
FIG. 3 is a flowchart of a method for isolating and breaking according to an embodiment of the present invention;
FIG. 4 is a flowchart of another method for isolating and breaking according to an embodiment of the present invention;
FIG. 5 is a flowchart of another method for isolating and breaking according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an apparatus for isolating and breaking according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a power supply system according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to timely disconnect the battery cluster when the battery cluster is short-circuited, the isolation and disconnection method, the device and the power supply system provided by the embodiment of the invention can generate an isolation control instruction according to the current value on a loop where the protection battery cluster is located, and the isolation and disconnection module is controlled to timely isolate the protection battery cluster from equipment to be powered based on the isolation control instruction, so that the fire loss caused by the failure of timely disconnection of the protection battery cluster is effectively avoided.
The embodiment provides a method for isolating and breaking, wherein the method is applied to a control module of an isolating and breaking device, fig. 1 shows a schematic structural diagram of the isolating and breaking device, and as shown in fig. 1, the isolating and breaking device 100 further comprises a current detection module 102 and an isolating and breaking module 103 connected with a control module 101, wherein the isolating and breaking module 103 is connected with a charge-discharge circuit for protecting a battery cluster (not shown in fig. 1) and equipment to be powered (not shown in fig. 1);
in practical use, the protection battery cluster is used for supplying power to the device to be powered, typically, the protection battery cluster is a cluster group including at least one battery module, each battery module includes at least one battery, for convenience of understanding, fig. 2 shows a schematic structure of a power supply circuit connection, so that the protection battery cluster includes 8 battery modules for explanation, and as shown in fig. 2, the 8 battery modules are respectively a battery module Pack (1), a battery module Pack (2), a battery module Pack (n-1), a battery module Pack (n), a battery module Pack (m-1), a battery module Pack (k) and a battery module Pack (k-1);
in this embodiment, a charge-discharge loop is formed by a protection battery cluster and a device to be powered, wherein, as shown in fig. 2, 1 isolation breaking module 103 is connected in series between a battery module Pack (2) and a battery module Pack (n-1), 1 isolation breaking module 103 is connected in series between a battery module Pack (n) and a battery module Pack (m-1), and 1 isolation breaking module 103 is connected in series between a battery module Pack (m) and a battery module Pack (k-1); at this time, the charge-discharge loop is divided into 4 parts by 3 isolation breaking modules 103, wherein the battery module Pack (1), the battery module Pack (2) and the positive electrode 201 of the to-be-supplied device 200 are the 1 st part; the battery module Pack (n-1) and the battery module Pack (n) are part 2; the battery module Pack (m) and the battery module Pack (m-1) are part 3; the battery module Pack (k), the battery module Pack (k-1) and the negative electrode 202 of the to-be-supplied device 200 are the 4 th portion, and in actual use, the number of the battery modules included in the protection battery cluster and the number of the isolation breaking modules connected in series in the charge-discharge loop can be set according to actual needs, and the protection battery cluster is not limited herein.
Referring to a flowchart of a method of isolating a break shown in fig. 3, the method specifically includes the steps of:
step S302, obtaining a current value on a charge-discharge loop detected by a current detection module;
the current value is understood to be the current value of the current flowing from the positive pole of the device to be supplied to the negative pole of the device to be supplied via the protected battery cluster.
Step S304, generating an isolation control instruction based on the current value;
and step S306, an isolation control instruction is sent to the isolation breaking module to control the isolation breaking module to break the charge and discharge loop, so that the battery cluster and the equipment to be powered are protected from breaking isolation.
Continuing with the previous example, when the control module 101 generates the isolation control instruction based on the received current value, the isolation control instruction may be sequentially sent to the three isolation breaking modules 103 according to the distance between the isolation breaking modules and the positive electrode of the to-be-powered device, so as to control the three isolation breaking modules 103 to sequentially disconnect the charge-discharge loop, so that the battery cluster and the to-be-powered device are protected from being isolated.
In actual use, the isolation control instruction may be sent to the three isolation breaking modules 103 at the same time, so as to control the three isolation breaking modules 103 to break the charge and discharge loop at the same time, and the mode of sending the isolation control instruction to the isolation breaking modules by the control module is not limited.
The embodiment of the application provides an isolation breaking method, wherein the method is applied to a control module of an isolation breaking device, the isolation breaking device further comprises a current detection module and an isolation breaking module which are connected with the control module, and the isolation breaking module is connected to a charge-discharge loop for protecting a battery cluster and equipment to be powered; after the current value on the charge-discharge loop detected by the current detection module is obtained, an isolation control instruction is generated based on the current value, and the isolation control instruction is sent to the isolation breaking module to control the isolation breaking module to break the charge-discharge loop, so that the protection battery cluster and the equipment to be powered are isolated. According to the method and the device, the isolation control instruction can be generated according to the current value on the loop where the protection battery cluster is located, the isolation breaking module is controlled to timely isolate the protection battery cluster from the equipment to be powered, and fire loss caused by the fact that the protection battery cluster cannot be timely broken is effectively avoided.
In general, when the current value on the charge-discharge loop exceeds a preset normal current threshold range, it is indicated that the charge-discharge loop fails, and an isolation control instruction generated based on the current value is required to isolate the protection battery cluster from the equipment to be powered to protect the battery and the equipment to be powered; this embodiment focuses on a specific embodiment of generating an isolation control instruction based on a current value.
As shown in fig. 4, the method for isolating and breaking in the embodiment includes the following steps:
step S402, obtaining a current value on a charge-discharge loop detected by a current detection module;
step S404, judging whether the current value meets a preset first current threshold range;
if yes, go to step S406; if not, step S408 is performed.
Step S406, generating a first control instruction;
step S408, judging whether the current value meets a preset second current threshold range;
if yes, go to step S410; if not, step S402 is executed, and since the method of the present embodiment monitors the charge and discharge loop in real time, the control module needs to re-acquire the current value on the charge and discharge loop to perform the subsequent steps when it is determined that the current values do not satisfy the first current threshold range and the second current threshold range.
The first current threshold range and the second current threshold range may be set according to actual needs, and are not limited herein.
Step S410, generating a second control instruction;
and step S412, a first control instruction or a second control instruction is sent to the isolation breaking module to control the isolation breaking module to break the charge and discharge loop, so that the battery cluster and the equipment to be powered are protected from breaking isolation.
The isolation breaking module comprises a tripping protection unit and a fusing protection unit; when the current value meets the first current threshold range and generates a first control instruction, the control module sends the first control instruction to the tripping protection unit of the isolation breaking module so as to control the tripping protection unit to break the charging and discharging loop.
As shown in fig. 2, under the control of the first control instruction, the trip protection units of the three isolation breaking modules 103 disconnect the battery module Pack (2) from the battery module Pack (n-1), the battery module Pack (n) from the battery module Pack (m-1), and the battery module Pack (m) from the battery module Pack (k-1), so that the protection battery cluster and the to-be-powered device are isolated, and the protection battery cluster cannot charge and discharge the to-be-powered device.
When the current value meets the second current threshold range and generates a second control instruction, the control module sends the second control instruction to the tripping protection unit and the fusing protection unit of the isolation breaking module so as to control the tripping protection unit to trip and control the fusing protection unit to fuse at the same time so as to disconnect the charge and discharge loop.
As shown in fig. 2, under the control of the second control instruction, the trip protection unit and the fuse protection unit of the three isolation breaking modules 103 disconnect the battery module Pack (2) from the battery module Pack (n-1), the battery module Pack (n) from the battery module Pack (m-1), and the battery module Pack (m) from the battery module Pack (k-1), so as to achieve breaking isolation between the protection battery cluster and the equipment to be powered, so that the protection battery cluster cannot charge and discharge the equipment to be powered.
As shown in fig. 1, the isolation breaking device 100 further includes a communication interface module 104 connected to the control module 101, where the communication interface module 104 is configured to be connected to an external battery control system (not shown in fig. 1); the embodiment provides another isolation breaking method, which is realized on the basis of the embodiment; this embodiment focuses on a specific implementation based on generating a current alert signal.
As shown in fig. 5, the method for isolating and breaking in the embodiment includes the following steps:
step S502, obtaining a current value on a charge-discharge loop detected by a current detection module;
step S504, judging whether the current value meets a preset third current threshold range;
if yes, go to step S506-step S508, if no, go to step S510; the third current threshold range may be set according to actual needs, and is not limited herein.
Step S506, a first current alarm signal is generated;
step S508, the first current alarm signal is sent to an external battery control system through a communication interface module;
step S510, judging whether the current value meets a preset first current threshold range;
if yes, go to step S512-step S514; if not, step S516 is performed.
Step S512, generating a first control instruction and a second current alarm signal;
step S514, a second current alarm signal is sent to an external battery control system through a communication interface module;
step S516, judging whether the current value meets a preset second current threshold range;
if yes, go to step S518; if not, step S502 is performed.
Step S518, generating a second control instruction and a third current alarm signal;
step S520, the third current alarm signal is sent to an external battery control system through a communication interface module;
and step S522, a first control instruction or a second control instruction is sent to the isolation breaking module so as to control the isolation breaking module to break the charge and discharge loop, so that the battery cluster and the equipment to be powered are protected from breaking isolation.
In this embodiment, the current threshold range, which is the triggering condition of the isolation breaking device, is divided into three gear steps, which are a first current threshold range, a second current threshold range, and a third current threshold range, for example, the third current threshold range is [100A-200A ], the second current threshold range is [200A-300A ], and the first current threshold range is 300A or more. In actual use, the current threshold range can be set according to actual needs.
In general, the trigger time of the trigger control module corresponding to the current threshold range may also be set, for example, the trigger time corresponding to the third current threshold range is 10s, the trigger time corresponding to the second current threshold range is 2s, and the trigger time corresponding to the third current threshold range is 20ms. The triggering time may be set according to actual needs, and is not limited herein.
As shown in fig. 2, when the current value obtained by the control module is within the third current threshold range [100A-200A ], the generated first current alarm signal is sent to the external battery control system after lasting for 10s, so that the sound alarm prompt is carried out by the sound module of the external battery control system or the text alarm prompt is carried out by the display module; when the current value is within a second current threshold range (200A-300A), the control module sequentially controls a tripping protection unit in the isolation breaking module to break a charging and discharging loop after lasting for 2 seconds; when the current value is 300A or more in the third current threshold range, the control module sequentially controls the fusing protection units in the isolation breaking module to conduct fusing protection after lasting for 20ms, and simultaneously controls the tripping protection units to conduct tripping protection.
Corresponding to the embodiment of the method, the embodiment of the invention provides an isolation breaking device, wherein the device is applied to a control module of the isolation breaking device, the isolation breaking device further comprises a current detection module and an isolation breaking module which are connected with the control module, and the isolation breaking module is connected on a charge-discharge loop for protecting a battery cluster and equipment to be powered; fig. 6 shows a schematic structural diagram of an apparatus for isolating a break, as shown in fig. 6, the apparatus comprising:
the obtaining module 602 is configured to obtain the current value on the charge-discharge loop detected by the current detecting module;
a generating module 604, configured to generate an isolation control instruction based on the current value;
the sending module 606 is configured to send an isolation control instruction to the isolation breaking module, so as to control the isolation breaking module to break the charging and discharging loop, so that the battery cluster and the equipment to be powered are protected from being broken and isolated.
The embodiment of the application provides an isolation breaking device, wherein the method is applied to a control module of the isolation breaking device, the isolation breaking device further comprises a current detection module and an isolation breaking module which are connected with the control module, and the isolation breaking module is connected to a charge-discharge loop for protecting a battery cluster and equipment to be powered; after the current value on the charge-discharge loop detected by the current detection module is obtained, an isolation control instruction is generated based on the current value, and the isolation control instruction is sent to the isolation breaking module to control the isolation breaking module to break the charge-discharge loop, so that the protection battery cluster and the equipment to be powered are isolated. According to the method and the device, the isolation control instruction can be generated according to the current value on the loop where the protection battery cluster is located, the isolation breaking module is controlled to timely isolate the protection battery cluster from the equipment to be powered, and fire loss caused by the fact that the protection battery cluster cannot be timely broken is effectively avoided.
The isolation breaking device provided by the embodiment of the invention has the same technical characteristics as the isolation breaking method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
The embodiment of the invention also provides a power supply system, and fig. 7 shows a schematic structural diagram of the power supply system, as shown in fig. 7, wherein the power supply equipment comprises an isolation breaking device 100, a protection battery cluster 700 and equipment to be powered 200; the isolation breaking device 100 comprises a control module 101, a current detection module 102 and an isolation breaking module 103, wherein the current detection module 102 and the isolation breaking module 103 are connected with the control module 101, and the isolation breaking module 103 is connected on a charge-discharge loop of the protection battery cluster 700 and the equipment to be powered 200; the control module is used for the isolation breaking method.
In the present embodiment, the isolation breaking module 103 is connected to the protection battery cluster 700, and the protection battery cluster 700 is used to charge and discharge the to-be-supplied device 200, and thus, the protection battery cluster 700 is connected to the to-be-supplied device 200.
As shown in fig. 7, the isolation breaking device 100 further includes a communication interface module 104 connected to the control module 101; the control module 101 is connected with an external battery control system through the communication interface module 104.
In order to enable the isolation breaking device to operate normally, as shown in fig. 7, the isolation breaking device 100 further includes a standby power supply 105 connected to the control module 101; the standby power supply is used for providing electric energy for the control module.
The method, the device and the computer program product of the power supply system for isolating and breaking provided by the embodiment of the invention comprise a computer readable storage medium storing program codes, wherein the instructions included in the program codes can be used for executing the method described in the method embodiment, and specific implementation can be seen in the method embodiment and will not be repeated here.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system and apparatus may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
In addition, in the description of embodiments of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood by those skilled in the art in specific cases.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying 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 thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention for illustrating the technical solution of the present invention, but not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the foregoing examples, it will be understood by those skilled in the art that the present invention is not limited thereto: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. The isolation breaking method is characterized by being applied to a control module of an isolation breaking device, wherein the isolation breaking device further comprises a current detection module and an isolation breaking module which are connected with the control module, and the isolation breaking module is connected to a charge-discharge loop for protecting a battery cluster and equipment to be powered; the method comprises the following steps:
acquiring a current value on the charge-discharge loop detected by the current detection module; the current value is a current value of negative current flowing from the positive electrode of the equipment to be powered to the equipment to be powered through the protection battery cluster;
generating an isolation control instruction based on the current value;
and sending the isolation control instruction to the isolation breaking module to control the isolation breaking module to break the charge and discharge loop, so that the protection battery cluster and the equipment to be powered are isolated.
2. The method of claim 1, wherein the isolation control instruction is a first control instruction or a second control instruction;
generating an isolation control command based on the current value, comprising:
judging whether the current value meets a preset first current threshold range or not;
if yes, generating a first control instruction;
if not, judging whether the current value meets a preset second current threshold range;
if so, a second control instruction is generated.
3. The method of claim 2, wherein the isolated breaking module comprises a trip protection unit and a fuse protection unit;
the step of sending the isolation control instruction to the isolation breaking module to control the isolation breaking module to break the charge and discharge loop comprises one of the following steps:
the first control instruction is sent to a tripping protection unit of the isolation breaking module so as to control the tripping protection unit to break the charge and discharge loop; or,
and sending the second control instruction to a tripping protection unit and a fusing protection unit of the isolation breaking module so as to control the tripping protection unit and the fusing protection unit to break the charging and discharging loop.
4. The method of claim 2, wherein the isolation breaking device further comprises a communication interface module coupled to the control module, wherein the communication interface module is configured to couple to an external battery control system;
before generating the isolation control instruction based on the current value, the method further comprises:
judging whether the current value meets a preset third current threshold range or not;
if not, executing the step of judging whether the current value meets a preset first current threshold range;
if yes, generating a first current alarm signal;
and sending the first current alarm signal to the external battery control system through the communication interface module.
5. The method according to claim 4, wherein the method further comprises:
if the current value is judged to meet the preset first current threshold range, generating a second current alarm signal;
and sending the second current alarm signal to the external battery control system through the communication interface module.
6. The method according to claim 4, wherein the method further comprises:
if the current value is judged to meet the preset second current threshold range, generating a third current alarm signal;
and sending the third current alarm signal to the external battery control system through the communication interface module.
7. The isolation breaking device is characterized by being applied to a control module of the isolation breaking device, and further comprising a current detection module and an isolation breaking module which are connected with the control module, wherein the isolation breaking module is connected to a charge-discharge loop for protecting a battery cluster and equipment to be powered; the device comprises:
the acquisition module is used for acquiring the current value on the charge-discharge loop detected by the current detection module; the current value is a current value of negative current flowing from the positive electrode of the equipment to be powered to the equipment to be powered through the protection battery cluster;
the generation module is used for generating an isolation control instruction based on the current value;
and the sending module is used for sending the isolation control instruction to the isolation breaking module so as to control the isolation breaking module to break the charge and discharge loop, so that the protection battery cluster and the equipment to be powered are isolated.
8. The power supply system is characterized by comprising an isolation breaking device, a protection battery cluster and equipment to be powered; the isolation breaking device comprises a control module, a current detection module and an isolation breaking module, wherein the current detection module and the isolation breaking module are connected with the control module, and the isolation breaking module is connected on the protection battery cluster and a charge-discharge loop of the equipment to be powered;
the control module is used for executing the method for isolating and breaking according to any one of claims 1-6.
9. The power supply system of claim 8, wherein the isolation breaking device further comprises a communication interface module connected to the control module;
the control module is connected with an external battery control system through the communication interface module.
10. The power supply system of claim 8, wherein the isolation breaking device further comprises a backup power source connected to the control module;
the standby power supply is used for providing electric energy for the control module.
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