Quick connection device for discharge experiment of storage battery pack

Abstract

The invention discloses a quick connection device for a discharge experiment of a storage battery pack. The quick connection device comprises a soft copper wire, a copper bar, a quick connector and a fuse 250A, the positive electrode and the negative electrode which are located between the storage battery pack and the high-frequency switch are connected through a soft copper wire, and a fuse 250A is installed on the soft copper wire; wherein the soft copper lead of the positive electrode leads a copper bar to be connected to the positive electrode of the discharger; the negative soft copper wire leads a copper bar to be connected to the negative electrode of the discharger. The working efficiency can be improved, the risk is reduced, and reliable operation of equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of storage battery packs, in particular to a quick-connect device for a storage battery pack discharge experiment. Background Art

[0002] To ensure the reliable operation of digital substations, according to the requirements of the State Grid Corporation, 110KV substations are equipped with 2 sets of 220V lead-acid battery packs, 220KV and above substations are equipped with 4 sets of 220V lead-acid battery packs, and 500KV and above substations are equipped with 2 sets of 48V lead-acid battery packs. So many battery packs also bring more maintenance work. According to the requirements of the State Grid, the battery packs need to be charged and discharged once a year. The power supply company has many battery packs. When conducting charge and discharge experiments; the traditional connection method not only consumes a lot of man-hours and increases costs, but also has greater operational risks and hardware damage risks. During the charge and discharge experiment, the battery is out of the monitoring of the high-frequency switching power supply system, which poses certain safety hazards.

[0003] Traditional charging and discharging tests require that the connecting wires from the battery pack to the high-frequency switching power supply be removed, and then the discharger and the battery pack be connected with wires. This means that each charge and discharge requires the high-frequency switching power supply connecting wires to be removed and installed on the positive and negative poles of the battery pack, and the discharger connecting wires to be removed and installed. Not only is the process cumbersome, but it is also a live operation, which poses a high safety risk. The battery terminals and wire fixing nuts are also damaged during the disassembly and assembly process. Summary of the invention

[0004] In order to overcome the above technical problems, the purpose of the present invention is to provide a battery pack discharge test quick-connect device, which can improve work efficiency, reduce risks and ensure reliable operation of equipment.

[0005] The technical solution adopted by the present invention is: A battery pack discharge test quick-connect device, comprising a soft copper wire, a copper busbar, a quick connector, and a 250A fuse; The positive and negative electrodes between the battery pack and the high-frequency switch are connected by soft copper wires, respectively, and a fuse of 250A is installed on the soft copper wires; Among them, the positive soft copper wire leads to a copper busbar connected to the positive electrode of the discharger; The soft copper wire of the negative pole leads to a copper busbar connected to the negative pole of the discharger.

[0006] The copper busbar is provided with a fuse 250A and a quick connector.

[0007] A method for operating a battery pack discharge test quick-connect device comprises the following steps: Step 1: Prepare before starting construction and determine whether the conditions for starting construction are met; Step 2: Turn off the discharge instrument and plug the discharge instrument cable into the output socket of the quick-connect device; Step 3: Check whether the connection wires of the discharge instrument device are short-circuited or short-circuited, and check the resistance value of the connection wires; If there is no short circuit or open circuit, continue to proceed downward; If there is a short circuit or open circuit, check the connecting cables and fix the fault before continuing; Step 4: Close the fuse from the battery pack to the discharger; Step 5: Put the discharge instrument equipment into working state; When the discharge instrument is working, conduct the discharge experiment; When the discharger does not work, disconnect the fuse from the battery pack to the discharger in the quick device to check and handle the discharger fault; Step 6: After the discharge is completed, disconnect the discharge instrument fuse, close the high-frequency switching power supply side fuse, and unplug the discharge instrument connection line.

[0008] Beneficial effects of the present invention: The work of disassembling and assembling wires is eliminated, which reduces the battery pack charging and discharging test time.

[0009] It reduces labor costs and the chance of equipment damage.

[0010] Live operation is avoided, reducing the safety risks of personnel and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The figure is a circuit diagram of the battery pack quick-connect device of the present invention.

[0012] Figure 2 It is a schematic diagram of the process of the present invention.

[0013] Figure 3 This is a physical diagram of the present invention. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] like Figure 1 As shown, a battery pack discharge test quick-connect device includes a soft copper wire, a copper busbar, a quick connector, and a fuse of 250A; The positive and negative electrodes between the battery pack and the high-frequency switch are connected by soft copper wires, respectively, and a fuse of 250A is installed on the soft copper wires; Among them, the positive soft copper wire leads to a copper busbar connected to the positive electrode of the discharger; The soft copper wire of the negative pole leads to a copper busbar connected to the negative pole of the discharger.

[0016] The copper busbar is provided with a fuse 250A and a quick connector.

[0017] Red represents the positive pole of the power supply, black represents the negative pole of the power supply, the device is inside the blue box, and the external equipment is outside the box. Example

[0018] like Figure 3 As shown, a prototype device was made according to the design plan, 20 plug-in connection experiments were carried out, the structure and material of the connector were adjusted and optimized twice, and finally the best design plan was determined.

[0019] The data of each experiment was recorded, including connection time, contact resistance, insertion and extraction force, etc., to ensure that the performance of the device met the requirements.

[0020] Operation process after having battery quick connection device Step 1: Insert the discharge instrument power cord into the quick-connect device for 0.3 min.

[0021] Step 2: Pull out the fuse on the power supply side of the high-frequency switch at the quick-connect device for 0.2 minutes; Step 3: Plug in the discharge instrument directional fuse at the quick-connect device for 0.2 minutes; Step 4: Turn on the discharge instrument and discharge for 240 minutes; Step 5: After the discharge is completed, pull out the discharge instrument directional fuse in the quick-connect device and plug in the high-frequency switch power supply directional fuse for 0.5 minutes; Step 6: Unplug the connection line between the discharge instrument and the quick-connect device, 0.3 min.

[0022] The total charging and discharging time is 241.5 minutes; the cable connection time is 1.5 minutes; the cable connection takes up 0.6% of the total time. The overall technical solution only takes 1.5 minutes, which saves time and is safe.

[0023] like Figure 2 As shown in the figure, with the battery quick-connect device, the actual working steps are as follows: Step 1: Prepare before starting construction and determine whether the conditions for starting construction are met; Step 2: Turn off the discharge instrument and plug the discharge instrument cable into the output socket of the quick-connect device; Step 3: Check whether the connection wires of the discharge instrument device are short-circuited or short-circuited, and check the resistance value of the connection wires; If there is no short circuit or open circuit, continue to proceed downward; If there is a short circuit or open circuit, check the connecting cables and fix the fault before continuing; Step 4: Close the fuse from the battery pack to the discharger; Step 5: Put the discharge instrument equipment into working state; When the discharge instrument is working, conduct the discharge experiment; When the discharger does not work, disconnect the fuse from the battery pack to the discharger in the quick device to check and handle the discharger fault; Step 6: After the discharge is completed, disconnect the discharge instrument fuse, close the high-frequency switching power supply side fuse, and unplug the discharge instrument connection line.

[0024] All operators received [X] rounds of training, and were assessed after the training to ensure that they were proficient in the new processes.

[0025] Effect check: Time shortening effect: Charging and discharging experiments were carried out on 10 battery packs, and the average connection and disassembly time was shortened to 1.5 minutes, meeting the target requirements.

[0026] Effect of reducing hardware failure rate: In the subsequent 10 experiments, no hardware failures due to connection operations occurred, and the failure rate was 0%, which was lower than the target value.

[0027] Short circuit accident prevention effect: Through real-time monitoring and early warning functions, no short-circuit accidents caused by connection operations occurred, and the goal was achieved. By comparing the data before and after the improvement through charts, it is intuitively demonstrated that the improvement effect is significant.

[0028] Dynamic environment system monitoring effect: In the municipal company's monitoring room, the real-time discharge data of the battery pack is viewed through the dynamic environment system.

[0029] In terms of cost: In the battery discharge test, the time for disassembling and assembling cables for each battery pack was saved by 60 minutes on average, with a time saving rate of 20%. Comprehensive calculation of labor costs and instrument usage fees saves 800 yuan per station. Based on the 10-year service life of the battery, a battery pack can save 8,000 yuan. Considering the probability of hardware loss and the 10-year service life, the average hardware loss cost of each battery pack is 200 yuan. In total, each battery pack can save 8,200 yuan over its service life.

Claims

1. A quick-connect device for battery discharge test, characterized in that: Including soft copper wire, copper busbar, quick connector, fuse 250A; The positive and negative electrodes between the battery pack and the high-frequency switch are connected by soft copper wires, respectively, and a fuse of 250A is installed on the soft copper wires; Among them, the positive soft copper wire leads to a copper busbar connected to the positive electrode of the discharger; The soft copper wire of the negative pole leads to a copper busbar connected to the negative pole of the discharger.

2. A battery pack discharge test quick-connect device according to claim 1, characterized in that: The copper busbar is provided with a fuse 250A and a quick connector.

3. An operating method of a battery pack discharge test quick-connect device according to claim 1 or 2, characterized in that: The steps include: Step 1: Prepare before starting construction and determine whether the conditions for starting construction are met; Step 2: Turn off the discharge instrument and plug the discharge instrument cable into the output socket of the quick-connect device; Step 3: Check whether the connection wires of the discharge instrument device are short-circuited or short-circuited, and check the resistance value of the connection wires; If there is no short circuit or open circuit, continue to proceed downward; If there is a short circuit or open circuit, check the connecting cables and fix the fault before continuing; Step 4: Close the fuse from the battery pack to the discharger; Step 5: Put the discharge instrument equipment into working state; When the discharge instrument is working, conduct the discharge experiment; When the discharger does not work, disconnect the fuse from the battery pack to the discharger in the quick device to check and handle the discharger fault; Step 6: After the discharge is completed, disconnect the discharge instrument fuse, close the high-frequency switching power supply side fuse, and unplug the discharge instrument connection line.

Images