Externally-mounted battery of 10-kilovolt circuit breaker

Abstract

The invention discloses a 10 kilovolt circuit breaker externally-mounted battery, which relates to the technical field of circuit breaker power supply external arrangement, and is characterized in that the 10 kilovolt circuit breaker externally-mounted battery comprises a shell and a fixing claw, the shell is provided with an electrical interface used for being connected with a circuit breaker, a battery module, an intelligent monitoring module and a communication module are arranged in the shell, and the battery module supplies power to the circuit breaker; the intelligent monitoring module monitors the state of the battery module, the communication module uploads the state data of the battery module monitored by the intelligent monitoring module to a transformer substation monitoring system, and the intelligent monitoring module adopts a voltameter chip to monitor the related data of the battery module in real time and pre-estimate the service life of the battery module. The device solves the problem that the battery is difficult to replace and monitor due to the built-in circuit breaker battery, is simple in structure, adopts the core technology that the shell is arranged to move the whole power supply component outwards, supplies power to the circuit breaker from the outer side of the circuit breaker, and is externally attached with the power module on the existing circuit breaker, so that the existing resource loss is reduced, and the cost is reduced. And meanwhile, the replacement of the power supply part can be monitored conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of external power supply for circuit breakers, and in particular relates to an external battery for a 10 kV circuit breaker. Background Art

[0002] Existing 10kV circuit breakers generally use built-in batteries as energy storage power sources, but built-in batteries have the following technical defects:

[0003] 1. Battery aging and difficulty in replacement,

[0004] Built-in batteries are usually installed inside circuit breakers. After aging, professionals need to dismantle the equipment and replace them, which is costly and time-consuming to maintain.

[0005] 2. Lack of condition monitoring,

[0006] Staff are unable to obtain relevant data such as battery capacity and health status in real time, which may easily cause the circuit breaker to malfunction or refuse to operate in the event of a fault.

[0007] 3. Insufficient communication and integration,

[0008] The built-in battery status information cannot be uploaded directly through the circuit breaker's existing communication link and requires additional monitoring.

[0009] Therefore, in order to solve the above problems, it is necessary to set up a 10 kV circuit breaker external battery to solve the problem that the existing 10 kV circuit breakers generally use built-in batteries as energy storage power sources, which makes battery replacement difficult and lacks battery monitoring methods. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to solve the deficiencies in the existing technology and to design a new 10 kV circuit breaker external battery. This 10 kV circuit breaker external battery has a simple structure and includes a shell, a fixed component outside the shell, and a power supply and monitoring component inside the shell. The core technology is to set up a shell to move the entire power supply component of the circuit breaker outward, supply power to the circuit breaker from the outside of the circuit breaker, and attach a power module to the existing circuit breaker. While reducing the loss of existing resources, it also facilitates the replacement of the power supply component. The monitoring fixed component is a fixed claw arranged on the outside of the shell and matched with the prefabricated card slot of the circuit breaker. The fixed claw is rotated so that the edge of the fixed claw is stuck in the prefabricated card slot. The external battery can be fixed on the circuit breaker, and after being fixed, it returns to its original position under the action of the reset spring. The monitoring components are the intelligent monitoring module and communication module set in the shell, which monitor the status, battery voltage, current, temperature and remaining capacity of the battery module in real time, and calculate the life of the battery module based on the monitored data. After the calculation is completed, the communication module and the existing communication link of the circuit breaker are connected to upload the relevant data such as the status of the battery module monitored and calculated by the intelligent monitoring module to the substation monitoring system, and the circuit breaker point meter information is used to realize "one meter for multiple transmissions", solving the problem that the existing circuit breaker has a built-in power supply, which makes it difficult to replace and monitor the internal battery.

[0011] The solution adopted by the present invention to solve the technical problem is:

[0012] A 10kV circuit breaker external battery,

[0013] It is characterized in that

[0014] Including the shell,

[0015] The housing is provided with a fixing claw on the outside that matches the prefabricated slot of the circuit breaker.

[0016] The fixed claw and the housing are connected via a rotating shaft.

[0017] A return spring is provided between the fixing claw and the housing.

[0018] The housing is provided with an electrical interface for connecting to a circuit breaker.

[0019] The housing is provided with a battery module, an intelligent monitoring module and a communication module.

[0020] The battery module is used to supply power to the circuit breaker.

[0021] The intelligent monitoring module is used to monitor the status of the battery module in real time and communicate with the circuit breaker point meter via the RS485 bus.

[0022] The communication module is used to connect to the existing communication link of the circuit breaker and upload the status data of the battery module monitored by the intelligent monitoring module to the substation monitoring system.

[0023] The intelligent monitoring module uses a fuel gauge chip to monitor relevant data of the battery module in real time and estimate the life of the battery module.

[0024] As a preferred embodiment of the present invention,

[0025] The fault diagnosis unit is provided with an alarm module.

[0026] The housing is provided with indicator lights connected to the alarm module, and the indicator lights include a green indicator light, a red indicator light and a yellow indicator light.

[0027] As a preferred embodiment of the present invention,

[0028] A temperature sensing device, a heating plate, a heat-conducting silica gel pad and a heat sink are arranged in the shell.

[0029] As a preferred embodiment of the present invention,

[0030] The electrical interface adopts an anti-misinsertion plug-in terminal.

[0031] As a preferred embodiment of the present invention,

[0032] The housing is provided with a communication interface,

[0033] The communication interface is used to connect to the RS485 bus, which communicates with the circuit breaker point meter via the Modbus protocol and encodes the status of the battery module into a standard frame format.

[0034] As a preferred embodiment of the present invention,

[0035] The battery module includes a main battery pack and a backup battery pack.

[0036] As a preferred embodiment of the present invention,

[0037] A resettable fuse is provided in the housing.

[0038] The rated value of the resettable fuse is 10A.

[0039] As a preferred embodiment of the present invention,

[0040] The housing is provided with an antenna.

[0041] As a preferred embodiment of the present invention,

[0042] The housing is provided with a display screen,

[0043] The display screen is used to display the capacity and temperature values ​​of the battery module.

[0044] As a preferred embodiment of the present invention,

[0045] The housing is made of aluminum alloy die-casting.

[0046] The protection grade of the housing is IP65.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. The present invention provides a 10kV circuit breaker external battery, primarily designed to address the difficulty of replacing and monitoring internally installed circuit breaker batteries. Its structure is simple, consisting of a housing and the necessary power supply components within. The core technology lies in the housing, which relocates the entire power supply components externally, allowing power to be supplied from outside the circuit breaker. This external power module attached to the existing circuit breaker reduces resource consumption and also facilitates monitoring of power supply component replacement.

[0049] 2. The device of the present invention features a simple fixing structure, making installation quick and easy. A fixing claw is located on the exterior of the housing, mating with a prefabricated slot in the circuit breaker. The claw is connected to the housing's rotating shaft. During installation, the claw is aligned with the prefabricated slot in the circuit breaker. The external battery is secured to the circuit breaker by rotating the claw until its edge engages the prefabricated slot. A return spring is also provided between the claw and the housing. After rotating the claw to secure the housing, the claw returns to its original position, stabilized by the spring.

[0050] 3. An intelligent monitoring module and a communication module are set in the shell to monitor the status, battery voltage, current, temperature and remaining capacity of the battery module in real time, and calculate the life of the battery module based on the monitored data. After the calculation is completed, the battery module status and other related data monitored and calculated by the intelligent monitoring module are uploaded to the substation monitoring system through the existing communication link connection between the communication module and the circuit breaker, and the circuit breaker point meter information is used to realize "one meter for multiple transmissions".

[0051] 4. A temperature sensor, heating plate, and heat sink are installed inside the housing. These devices monitor the ambient temperature inside the housing in real time. If the ambient temperature is different from the normal value, the heating plate is controlled to heat the housing or the heat is promptly dissipated from the housing via the heat sink. This ensures that the temperature inside the housing is always within the optimal temperature range for the battery module, ensuring the safety of the battery module and preventing battery module failures caused by low or high temperatures inside the housing.

[0052] 5. The battery module includes a main battery pack and a backup battery pack, supports dual-battery parallel operation, and automatically switches when a single battery fails to ensure the continuity of the circuit breaker energy storage power supply.

[0053] 6. The shell is made of aluminum alloy die-casting, which has high strength, fast molding speed and the shell protection grade is IP65. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a schematic diagram of the external structure of a 10 kV circuit breaker external battery proposed by the present invention;

[0055] Figure 2 This is a block diagram of the internal structure of a 10 kV circuit breaker external battery proposed by the present invention.

[0056] Description of reference numerals:

[0057] 1. Shell,

[0058] 2. Fixed claw. DETAILED DESCRIPTION

[0059] The specific implementation of the present invention is described below with reference to the accompanying drawings and embodiments:

[0060] It should be noted that the structures, colors, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0061] At the same time, in the description of the present invention, it should be understood that the terms "one end", "the other end", "middle", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0062] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0063] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or directly designed as one body; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0064] like Figure 1-Figure 2 As shown, the present invention proposes a 10kV circuit breaker external battery, eliminating the difficulties associated with internal battery replacement and monitoring. Specifically, the battery comprises a housing 1 and the necessary power supply components within the housing 1. The entire power supply assembly is relocated externally, providing power to the circuit breaker from outside. By attaching a power module to the existing circuit breaker, it reduces resource consumption and facilitates monitoring of power supply component replacement.

[0065] A fixing claw 2 is provided on the outside of the housing 1 to match the prefabricated slot of the circuit breaker. The fixing claw 2 and the housing 1 are connected by a rotating shaft. The fixing claw 2 is aligned with the prefabricated slot of the circuit breaker, and the fixing claw 2 is rotated so that the edge of the fixing claw 2 is stuck in the prefabricated slot to complete the fixation, thereby fixing the external battery on the circuit breaker. The fixing structure is simple and the installation process is convenient and easy to operate.

[0066] A return spring is provided between the fixing claw 2 and the housing 1. After the fixing claw 2 is rotated to fix the housing 1, the housing 1 can be restored to its original position under the action of the return spring.

[0067] The return spring can be directly set on the corresponding rotating shaft, or can be set at other positions of the housing 1 to ensure that the fixing claw 2 has enough force to return to its original state after rotation, thereby ensuring the stability of the housing 1 during the fixing process.

[0068] A wear-resistant insulating pad can also be provided at the position where the fixing claw 2 contacts the prefabricated card slot. The insulating pad is preferably a rubber insulating pad. The rubber insulating pad has excellent insulation ability and can withstand high voltage without conducting electricity. It effectively prevents accidental current conduction between the fixing claw 2 and the prefabricated card slot, greatly reduces the risk of short circuit, and provides reliable electrical isolation protection for the equipment.

[0069] In addition, rubber has excellent wear resistance and is not easily worn out during long-term friction and extrusion. It can maintain structural integrity even under frequent opening and closing or vibration conditions. At the same time, rubber has good flexibility and resilience, allowing it to fit tightly to irregular contact surfaces and fill tiny gaps. Even if the prefabricated slot of the circuit breaker is uneven, it can still be tightly connected to it. This can not only enhance the stability of the connection between the fixing claw 2 and the prefabricated slot, but also play a role in buffering and shock absorption, thereby reducing the rigid collision between the two components.

[0070] In addition, the aging resistance of rubber insulating pads is also outstanding. Regardless of high temperature, severe cold or humid environment, they can maintain stable physical and chemical properties, resist the erosion of ultraviolet rays, ozone and other factors, and ensure long-term insulation and wear-resistant effects.

[0071] The number of the fixing claws 2 is not fixed and can be adjusted in real time according to the actual situation on site to ensure the stability of the housing 1. In this embodiment, four fixing claws 2 are provided, symmetrically arranged on the outside, to fix the housing 1 from both sides.

[0072] The housing 1 is provided with an electrical interface for connecting the circuit breaker. The power supply in the housing 1 and the circuit breaker are connected through the electrical interface to ensure the power supply of the circuit breaker. The power supply components can be replaced through the interface on the basis of the existing circuit breaker without disassembling the circuit breaker body.

[0073] Housing 1 contains a battery module, an intelligent monitoring module, and a communication module. The battery module is used to supply power to the circuit breaker, completing the circuit breaker's power supply. The intelligent monitoring module is used to monitor the status of the battery module in real time, including the battery voltage, current, temperature, and remaining capacity. It also calculates the life of the battery module based on the monitored data. After the calculation is completed, it communicates with the circuit breaker's point meter via the RS485 bus. The communication module is used to connect to the circuit breaker's existing communication link, and upload relevant data such as the battery module's status monitored and calculated by the intelligent monitoring module to the substation monitoring system, using the circuit breaker's point meter information to achieve "one meter, multiple transmissions."

[0074] The intelligent monitoring module uses a fuel gauge chip to monitor battery module data in real time and estimate the battery module lifespan. The battery status monitoring and fuel gauge chip are installed within the housing 1, allowing staff to remotely monitor the battery module status in real time, ensuring the safety of the device during use.

[0075] In addition, the health and remaining life of the battery module are calculated in real time during monitoring. In case of failure, repair and replacement can be carried out in real time. When the service life of the device is insufficient, the staff can know in real time and replace it in time.

[0076] The technology related to fuel gauge chips is already very mature, and existing ones on the market can be directly selected. For example:

[0077] The MAX17260 combines the excellent short-term accuracy and linearity of a coulomb counter with the long-term stability of voltage sensing technology. It also features temperature compensation. Furthermore, it accurately estimates remaining operating time and time until a full charge is achieved. It also provides three battery life reporting methods: capacity degradation, increased battery resistance, and increased charge cycles.

[0078] 2. MAX17320 can monitor various battery states and provide multiple protection functions and charging specifications to ensure safe battery operation and extend battery life.

[0079] 3. MAX17263, with high-precision current detection, wide current-sense resistor range, and temperature compensation, requires no calibration and can provide accurate battery-related data such as power status and remaining capacity.

[0080] The fault diagnosis unit is provided with an alarm module, which triggers an alarm when the intelligent monitoring module monitors and calculates that the capacity of the battery module is lower than the threshold (in this embodiment, the threshold of the capacity of the battery module is 20%) or when overvoltage, undervoltage or overtemperature occurs.

[0081] The shell 1 is provided with an indicator light connected to the alarm module. When the intelligent monitoring module monitors and calculates that the battery module is working normally, abnormal warning or fault warning, the alarm module controls the corresponding indicator light to light up, showing the working status of the battery module to the staff, and reminding the staff to pay attention to whether the battery module needs to be replaced or repaired.

[0082] Specifically, the indicator lights include a green indicator light, a red indicator light, and a yellow indicator light, which display the different status of the battery modules through different colors of light.

[0083] A green indicator light indicates that the battery is healthy and fully charged, and the system is operating normally. A yellow indicator light indicates that the battery is low or has a minor fault (such as rapid battery life reduction or obvious abnormal data), which requires attention. A red indicator light indicates a battery fault (such as capacity below the threshold or overvoltage, undervoltage, or overtemperature), which requires immediate shutdown for inspection or replacement.

[0084] Furthermore, you can set the contrast between flashing and steady-on to reflect the varying battery module status. For example, flashing red indicates a low battery level and requires immediate charging, while flashing yellow indicates an abnormal charging status. Specific settings can be tailored to site conditions and staff habits, making it easier for staff to get started.

[0085] Preferably, the alarm module preferably uses an audible and visual alarm to remind the staff that the battery module has failed from both the sound warning and the light warning, and remind the staff to replace it in time to prevent the battery module from failing and causing the circuit breaker to be unable to use normally.

[0086] A temperature sensing device, a heating plate and a heat sink are provided in the shell 1. The temperature sensing device detects the ambient temperature inside the shell 1. When it detects that the ambient temperature is lower than the normal temperature value, it controls the heating plate to heat up. The heating plate actively heats the battery to maintain a suitable operating temperature in a low-temperature environment, thereby avoiding the problem of battery module capacity attenuation and low charging and discharging efficiency of the battery module due to the low temperature in the shell 1. Accordingly, when the temperature sensing device detects that the battery module inside the shell 1 is in a high-temperature environment or has been working for a long time, it promptly removes the heat from the shell 1, thereby avoiding problems such as excessive temperature causing a reduction in the life of the battery module, thermal runaway of the battery causing fire or explosion, etc.

[0087] By cooperating with the heating plate and the heat sink, active heating and efficient heat conduction are used to form a cycle of temperature increase-decrease-increase inside the shell 1, so that the temperature inside the shell 1 can be adjusted, ensuring that the temperature inside the shell 1 is always within the most suitable temperature range for the battery module, thereby ensuring the safety of the battery module and its efficiency during operation.

[0088] A thermally conductive silicone pad is also provided inside the shell 1 to solve the contact thermal resistance problem between the battery module, heating plate, and heat sink, ensure that the heat inside the shell 1 is efficiently transferred and evenly distributed, and quickly and evenly transfer the heat generated by the heating plate to the battery surface to avoid local overheating or uneven temperature.

[0089] Signal exchange between the battery module and the circuit breaker is achieved through hardwiring, ensuring real-time availability of the communication link. The electrical interface uses pluggable terminals (such as aviation plugs) to prevent mis-insertion, ensuring the stability of the connection between the device and the circuit breaker. This prevents the device from being disconnected from the circuit breaker due to external forces such as wind and animal impact during use, which could cause the circuit breaker to disconnect from the power supply module and render the circuit breaker inoperable.

[0090] In addition, the electrical interface integrates the functions of power output and communication signal transmission. During the process of transmitting power to the circuit breaker, the communication signal can also be transmitted synchronously, achieving the purpose of dual use and improving the utilization rate of the electrical interface.

[0091] The housing 1 is also provided with a communication interface, which is used to connect to the RS485 bus. The RS485 bus communicates with the circuit breaker point meter via the Modbus protocol, and encodes the status of the battery module (such as SOC, fault code, etc.) into a standard frame format.

[0092] The battery module includes a main battery pack and a backup battery pack, supporting dual-battery parallel operation. Automatically switching to a backup battery pack in the event of a single battery failure ensures continuity of energy storage power to the circuit breaker. The intelligent monitoring module monitors the main and backup battery packs in real time. If the dual battery packs fail due to long-term use or other issues, power will automatically switch to the single battery pack. The intelligent monitoring module continuously monitors the battery packs during power supply.

[0093] A resettable fuse is installed within housing 1 for overcurrent protection, automatically limiting the output current when it exceeds the rated value. Based on actual field use, the resettable fuse is preferably rated at 10A. When the output current exceeds 10A, it automatically limits the current to prevent overcurrent from causing device failure or even damage to the connected circuit breaker.

[0094] The housing 1 is provided with an antenna and is connected to the main station via the antenna.

[0095] The housing 1 is equipped with a display screen that displays the battery module capacity and temperature, visually displaying the temperature inside the housing 1 and the battery module capacity. This allows staff to quickly access relevant information without the need for additional equipment, allowing them to keep abreast of the battery's operating status and improving the ease and safety of operating the device.

[0096] Housing 1 is die-cast from an aluminum alloy, offering high tensile strength and resistance to external impact and vibration. It also features fast molding and high production efficiency. Housing 1 has an IP65 protection rating, offers excellent dustproofing, and can withstand low-pressure impacts from any direction. Furthermore, aluminum alloy itself is inherently corrosion-resistant, and the oxide film on its surface further enhances housing 1's reliability in harsh environments such as moisture and dust.

[0097] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the scope of the present invention.

[0098] Many other changes and modifications can be made without departing from the spirit and scope of the present invention. It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A 10kV circuit breaker external battery, It is characterized by: comprising a housing (1), The housing (1) is provided with a fixing claw (2) on the outside thereof that matches the prefabricated slot of the circuit breaker. The fixed claw (2) and the housing (1) are connected via a rotating shaft. A return spring is provided between the fixed claw (2) and the housing (1). The housing (1) is provided with an electrical interface for connecting to a circuit breaker. The housing (1) is provided with a battery module, an intelligent monitoring module and a communication module. The battery module is used to supply power to the circuit breaker. The intelligent monitoring module is used to monitor the status of the battery module in real time and communicate with the circuit breaker point meter via the RS485 bus. The communication module is used to connect to the existing communication link of the circuit breaker and upload the status data of the battery module monitored by the intelligent monitoring module to the substation monitoring system. The intelligent monitoring module uses a fuel gauge chip to monitor relevant data of the battery module in real time and estimate the life of the battery module.

2. A 10 kV circuit breaker external battery as claimed in claim 1, It is characterized by: The fault diagnosis unit is provided with an alarm module. The housing (1) is provided with indicator lights connected to the alarm module, and the indicator lights include a green indicator light, a red indicator light and a yellow indicator light.

3. A 10 kV circuit breaker external battery as claimed in claim 1, It is characterized by: A temperature sensing device, a heating plate, a heat-conducting silica gel pad and a heat sink are arranged in the housing (1).

4. A 10 kV circuit breaker external battery as claimed in claim 1, It is characterized by: The electrical interface adopts an anti-misinsertion plug-in terminal.

5. A 10 kV circuit breaker external battery as claimed in claim 1, It is characterized by: The housing (1) is provided with a communication interface, The communication interface is used to connect to the RS485 bus, which communicates with the circuit breaker point meter through the Modbus protocol and encodes the status of the battery module into a standard frame format.

6. A 10 kV circuit breaker external battery as claimed in claim 1, It is characterized by: The battery module includes a main battery pack and a backup battery pack.

7. A 10 kV circuit breaker external battery as claimed in claim 1, It is characterized by: A self-resetting fuse is provided in the housing (1). The rated value of the resettable fuse is 10A.

8. A 10 kV circuit breaker external battery as claimed in claim 1, It is characterized by: The housing (1) is provided with an antenna.

9. A 10 kV circuit breaker external battery as claimed in claim 1, It is characterized by: The housing (1) is provided with a display screen, The display screen is used to display the capacity and temperature values ​​of the battery module.

10. A 10 kV circuit breaker external battery as claimed in claim 1, It is characterized by: The housing (1) is formed by die-casting of aluminum alloy. The protection grade of the housing (1) is IP65.

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