CN113281663A - But long-range battery constant current discharge device - Google Patents
But long-range battery constant current discharge device Download PDFInfo
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- CN113281663A CN113281663A CN202110501835.5A CN202110501835A CN113281663A CN 113281663 A CN113281663 A CN 113281663A CN 202110501835 A CN202110501835 A CN 202110501835A CN 113281663 A CN113281663 A CN 113281663A
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- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
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Abstract
本发明公开了一种可远程蓄电池恒流放电装置。本发明中，控制放电时长、放电电流、电压放电下限，以稳定精准性的放电电流恒流放电，来实现电池组放电功能。放电全过程根据设定电流定电流恒流放电，可设定放电时间及放电电压保护下限，当到达设定的放电时间或电压下限自动停止放电。本设计在放电过程中，实时显示放电电流、电压、放电时间及放出容量，放电数据自动保存且掉电不丢失。具有反接、错接、过流、欠流、过压、自保护功能。无人化操作也是智能工业化的趋势，远程操作能够节约大量人力物力，在远程后台对放电参数进行设置，启动放电后实时查看放电电流，放电时长，放电容量。放电过程出现异常可自动停止放电，保护放电的可靠安全。
The invention discloses a remote battery constant current discharge device. In the present invention, the discharge duration, discharge current, and voltage discharge lower limit are controlled, and the discharge function of the battery pack is realized by stable and accurate discharge current and constant current discharge. The whole discharge process is based on the set current, constant current and constant current discharge. The discharge time and the discharge voltage protection lower limit can be set. When the set discharge time or voltage lower limit is reached, the discharge will automatically stop. In this design, during the discharge process, the discharge current, voltage, discharge time and discharge capacity are displayed in real time, and the discharge data is automatically saved and will not be lost in case of power failure. It has the functions of reverse connection, wrong connection, overcurrent, undercurrent, overvoltage and self-protection. Unmanned operation is also a trend of intelligent industrialization. Remote operation can save a lot of manpower and material resources. The discharge parameters can be set in the remote background, and the discharge current, discharge time, and discharge capacity can be checked in real time after starting the discharge. Discharge can be automatically stopped if there is an abnormality in the discharge process to protect the reliability and safety of discharge.
Description
Technical Field
The invention belongs to the technical field of storage battery maintenance, and particularly relates to a constant-current discharging device capable of remotely discharging a storage battery.
Background
The accumulator power supply is a power supply replacement product developed for most accumulator manufacturers and accumulator production process research institutions. The system is formed by optimally combining a PLC industrial personal computer system, a Chinese large-screen Liquid Crystal Display (LCD), a highly integrated thyristor intelligent charge-discharge module, a high-precision sensor feedback system and the like. The intelligent dynamic adjustment charging and discharging technology is applied, the operation and monitoring of the whole production processes such as charging, inversion and the like of the storage battery are realized through a digital closed-loop feedback and a microprocessor automatic control thyristor intelligent charging and discharging module, an operator only needs to set the process, the industrial personal computer automatically monitors the whole operation process in real time, and the operation state and all parameters are displayed on the liquid crystal screen visually in real time. And under the change of the input voltage of the power grid and the constant change of the load, the output can be self-adapted and adjusted to the set current and voltage values, and the charging efficiency is obviously improved. The charging function and the inversion discharging function can be realized, and the electric quantity metering is realized during charging and discharging. Therefore, the efficient operation of the storage battery production line is ensured, and the position of a standby storage battery power supply in the system operation is more and more important along with the development of power system communication; according to the storage battery maintenance management stipulations: each storage battery pack should be subjected to 1 check discharge test every year, a power system generally carries out a discharge test at 0.1C, the discharge test can be carried out at half capacity, and the voltage and the discharge current of the battery pack should be measured once per hour during the discharge period.
With the increase of stations, the periodic charging and discharging test of the storage battery is difficult to complete according to the requirements of regulations under the condition of limited manpower and material resources.
Disclosure of Invention
The invention aims to: in order to solve the problems, the constant-current discharging device for the storage battery can be remotely arranged.
The technical scheme adopted by the invention is as follows: a constant-current discharging device of a remote storage battery comprises a storage battery pack, a switch, a control unit, a detection unit, a Schottky diode, a buzzer, a self-contained power supply, a junction clamp, a reverse connection protection, a short-circuit protection, a power resistor, a relay, a shunt and a Hall current sensor, wherein the positive pole and the negative pole of the storage battery pack are respectively connected with the two ends of the switch and are started by a switch control device, the voltage of the storage battery pack is collected, a contactor is controlled by an MCU (microprogrammed control unit) and is used for controlling a fan to be started simultaneously, the long-time working temperature of the power resistor cannot be overhigh and reddish, the Schottky diode prevents the positive pole and the negative pole of the end of the storage battery pack from being connected with a reverse circuit to damage internal components of the device, the DC24V switching power supply is input from the storage battery pack, and the internal unit of the device, the fan and the relay are driven by DC 24V; the Hall current sensor collects current in a discharge loop in real time, converts a current signal into a voltage signal, and adjusts the MOS through DAC chip feedback control, the MOS tube works in a variable linear region and is a constant current circuit to maintain discharge constant current
In a preferred embodiment, the remote battery constant-current discharging device comprises the following steps when in use:
s1, firstly, after wiring in a shutdown state, connecting the quick plug ends of the red and black discharge wires to the +, -ports of the instrument storage battery pack, and screwing the quick plug ends in the red and black-wires in a clockwise direction;
and S2, connecting the alligator pliers or the wiring terminals of the discharge wires with the anode and the cathode of the battery pack, wherein the anode and the cathode are red, black, attention is paid to: the fixing reliability, good contact and no falling off are ensured;
s3, if the slave mode is adopted, namely the slave mode is connected with the wireless polling instrument to work on line or is connected with other similar equipment to work in parallel, the control line of the equipment and the storage battery needs to be connected;
s4, closing the discharge air switch, starting the instrument to work, and entering a main interface after self-checking;
and S5, before remote discharge, setting the discharge current, the lower voltage limit, the discharge time and the battery pack code, carrying out constant current discharge by the equipment according to the set current, and when the lower voltage limit is reached or the discharge time is over, automatically stopping discharge by the equipment and sending out sound to prompt the end of discharge.
In a preferred embodiment, in step S5, the device may remotely control the discharging function, add a control protocol, define as a fixed format, control a data frame synchronization header + a device address + CC + a subsequent data length + a setting code + a valid flag + data + check, and implement control of the discharging device by the control device.
In a preferred embodiment, in step S5, after the discharge is started, the contactor is first closed, and the device detection state is entered.
In a preferred embodiment, in step S5, the detected state is that each path of the MOS transistor is sequentially turned on, each path is turned on for 100mS, the shunt collects the discharge current of each path, automatically records the current of each path, and automatically calculates the number of corresponding paths to be turned on to reach the set current value.
In a preferred embodiment, in step S5, if the sum of the current of the resistor strips except the adjustable resistor is less than the set current 4A, the resistor strips are redistributed.
In a preferred embodiment, in step S5, when the current is insufficient or too high, the dynamic MOS is turned on to perform adjustment, and as the voltage of the battery pack continuously decreases and the current does not reach the set current value, the dynamic MOS is determined according to the collected current, and a power resistor is switched, and the adjustable battery is rapidly adjusted to ensure the constancy of the current.
In a preferred embodiment, in step S5, the discharging device replies to the control device with data in a corresponding format, and replies to the data frame sync header + control data frame sync header + address + CC + subsequent data length + setting code + data + check; realizing the reply of the data; the whole control device controls the discharging device, the display device is provided with the internet access, and the remote background discharging operation can be realized through the network.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the invention is designed and developed for the problem, can be remotely controlled, controls the discharge time, the discharge current and the voltage discharge lower limit, and realizes the discharge function of the battery pack by stable and accurate discharge current constant current discharge. The discharge time and the lower limit of the discharge voltage protection can be set in the whole discharge process according to the constant current discharge of the set current, and the discharge is automatically stopped when the set discharge time or the lower limit of the voltage is reached. The design supports the function of suspending discharge in the discharge process, continues discharge, has uninterrupted time, and continuous record of the stored discharge data, and displays the discharge current, voltage, discharge time and discharge capacity in real time in the discharge process, and the discharge data is automatically stored and is not lost in power failure. The device has self-protection functions of reverse connection, misconnection, overcurrent, undercurrent, overvoltage, undervoltage, overtemperature and the like. Unmanned operation is also the trend of intelligent industrialization, and remote operation can practice thrift a large amount of manpower and materials, sets up discharge parameter at remote backstage, and the discharge current is looked over in real time after starting to discharge, and discharge duration, discharge capacity. The discharge can be automatically stopped when the discharge process is abnormal, so that the discharge is protected to be reliable and safe.
2. In the invention, the battery can be discharged only by one computer which is provided with operation software and is connected with the network in a remote discharging way; constant current discharging is carried out in the whole process according to the set discharging current; parameters such as discharge current, discharge time, discharge voltage protection lower limit and the like are freely set; the discharge current of the battery pack can be any discharge current and is set in a stepless manner; checking the discharge current of the battery pack, the voltage of the battery pack and the capacity of the battery in real time; when discharging, the battery pack can be separated out, and the battery is safely and reliably discharged; the discharge can be stopped or suspended in the running process of the equipment, the data is stored continuously after the discharge is continued, and the discharge data is complete; the storage battery maintenance system not only meets the relevant requirements of storage battery maintenance, but also saves a large amount of manpower and material resources, improves the working efficiency and realizes the unattended operation or the centralized maintenance of the power supply system in a full-automatic manner.
Drawings
FIG. 1 is a wiring diagram of the present invention;
FIG. 2 is a schematic diagram of a discharge circuit of the apparatus of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-2, a remote constant-current discharging device for a storage battery comprises a storage battery pack, a switch, a control unit, a detection unit, a schottky diode, a buzzer, a self-contained power supply, a junction clamp, a reverse connection protection, a short-circuit protection, a power resistor, a relay, a shunt and a hall current sensor, wherein the positive electrode and the negative electrode of the storage battery pack are respectively connected with two ends of the switch and are started by a switch control device, the voltage of the storage battery pack is collected, a contactor is controlled by an MCU (microprogrammed control unit) and is used for controlling a fan to be started at the same time, the long-time working temperature of the power resistor cannot be too high to generate red, the schottky diode prevents the positive electrode and the negative electrode of the storage battery pack from being reversely connected with internal components of the device, and the DC24V switching power supply input is taken from the storage battery pack, and the internal units of the device, the fan and the relay are driven by a DC 24V; the Hall current sensor collects current in a discharge loop in real time, converts a current signal into a voltage signal, and controls and adjusts the MOS through the feedback of a DAC chip, and the MOS tube works in a variable linear region and is a constant current circuit to keep constant current of discharge. The remote storage battery constant-current discharging device comprises the following steps when in use:
s1, firstly, after wiring in a shutdown state, connecting the quick plug ends of the red and black discharge wires to the +, -ports of the instrument storage battery pack, and screwing the quick plug ends in the red and black-wires in a clockwise direction;
and S2, connecting the alligator pliers (or the wiring terminals) of the discharge wires with the positive and negative electrodes of the battery pack, wherein the voltage is red plus black-, and the voltage is noted as follows: the fixing reliability, good contact and no falling off are ensured;
s3, if the slave mode is adopted, namely the wireless polling instrument works online or works in parallel with other similar equipment, a control line needs to be connected;
s4, closing the discharge air switch, starting the instrument to work, and entering a main interface after self-checking;
s5, before remote discharge, setting the discharge current, the lower voltage limit, the discharge time and the battery pack code, and the equipment performs constant current discharge according to the set current, and when the lower voltage limit or the discharge time is over, the equipment automatically stops discharge and sends out sound to prompt the end of discharge; in step S5, the device may remotely control the discharge function, add a control protocol, define as a fixed format, control the data frame sync header + the device address + CC + the subsequent data length + the setting code + the valid flag + the data + the verification, and implement the control of the control device on the discharge device; in step S5, after the discharge is started, the contactor is closed first, and the device enters a detection state; in the step S5, the detection state is that each path of the MOS transistor is sequentially turned on, each path is turned on for 100mS, the shunt collects the discharge current of each path, automatically records the current of each path, and automatically calculates the number of corresponding paths to be turned on to reach the set current value; in step S5, if the sum of the currents of the other resistor strips except the adjustable resistor is less than the set current 4A, redistributing the resistor strips; in the step S5, when the current is insufficient or too high, the MOS is dynamically adjusted to be turned on for adjustment, and as the voltage of the battery pack continuously decreases and the current does not reach the set current value, the judgment is performed according to the collected current, a power resistor is switched, and meanwhile, the adjustable battery pack is adjusted quickly to ensure the constancy of the current; the invention is designed and developed for the problem, can be remotely controlled, controls the discharge duration, the discharge current and the voltage discharge lower limit, and realizes the discharge function of the battery pack by stable and accurate discharge current constant current discharge. The discharge time and the lower limit of the discharge voltage protection can be set in the whole discharge process according to the constant current discharge of the set current, and the discharge is automatically stopped when the set discharge time or the lower limit of the voltage is reached. The design supports the function of suspending discharge in the discharge process, continues discharge, has uninterrupted time, and continuous record of the stored discharge data, and displays the discharge current, voltage, discharge time and discharge capacity in real time in the discharge process, and the discharge data is automatically stored and is not lost in power failure. The device has self-protection functions of reverse connection, misconnection, overcurrent, undercurrent, overvoltage, undervoltage, overtemperature and the like. Unmanned operation is also the trend of intelligent industrialization, and remote operation can practice thrift a large amount of manpower and materials, sets up discharge parameter at remote backstage, and the discharge current is looked over in real time after starting to discharge, and discharge duration, discharge capacity. The discharge can be automatically stopped when the discharge process is abnormal, so that the discharge is protected to be reliable and safe; the battery can be discharged only by one computer which is provided with operation software and is connected with the network in a remote discharging mode; constant current discharging is carried out in the whole process according to the set discharging current; parameters such as discharge current, discharge time, discharge voltage protection lower limit and the like are freely set; the discharge current of the battery pack can be any discharge current and is set in a stepless manner; checking the discharge current of the battery pack, the voltage of the battery pack and the capacity of the battery in real time; when discharging, the battery pack can be separated out, and the battery is safely and reliably discharged; the discharge can be stopped or suspended in the running process of the equipment, the data is stored continuously after the discharge is continued, and the discharge data is complete.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms include, or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements does not include only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement that an element defined by … … is included does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a but long-range battery constant current discharge device, includes storage battery, switch, the control unit, detecting element, schottky diode, bee calling organ, and the power supply that is equipped with certainly, the binding clip, the protection of switching over, short-circuit protection, power resistor, relay, shunt, hall current sensor, its characterized in that: the positive electrode and the negative electrode of the battery pack are respectively connected to two ends of a switch and are started by a switch control device, the voltage of the battery pack is collected, the contactor is controlled by an MCU (microprogrammed control unit), the MCU controls a fan to be started simultaneously, a Schottky diode prevents the positive electrode and the negative electrode of the pack end from being connected reversely to damage components inside the device, a DC24V switching power supply input is taken from the battery pack, and the unit inside the device, the fan and a relay are driven to be taken from DC 24V; the Hall current sensor collects current in a discharge loop in real time, converts a current signal into a voltage signal, and controls and adjusts the MOS through the feedback of the DAC chip, and the MOS tube works in a variable linear region.
2. A remotely operable battery constant current discharge apparatus as claimed in claim 1, wherein: the remote storage battery constant-current discharging device comprises the following steps when in use:
s1, firstly, after wiring in a shutdown state, connecting the quick plug ends of the red and black discharge wires to the +, -ports of the instrument storage battery pack, and screwing the quick plug ends in the red and black-wires in a clockwise direction;
s2, connecting the crocodile pliers of the discharge lead to the positive and negative electrodes of the battery pack, wherein the positive and negative electrodes are red and black;
s3, adopting the wireless polling instrument to work on line or parallel with other similar devices, needing to connect the control line of the device and the storage battery;
s4, closing the discharge air switch, starting the instrument to work, and entering a main interface after self-checking;
and S5, before remote discharge, setting the discharge current, the lower voltage limit, the discharge time and the battery pack code, carrying out constant current discharge by the equipment according to the set current, and when the lower voltage limit is reached or the discharge time is over, automatically stopping discharge by the equipment and sending out sound to prompt the end of discharge.
3. A remotely operable battery constant current discharge apparatus as claimed in claim 1, wherein: in step S5, the device may remotely control the discharging function, add a control protocol, and define a fixed format.
4. A remotely operable battery constant current discharge apparatus as claimed in claim 2, wherein: in step S5, after the discharge is started, the contactor is first closed to enter the device detection state.
5. A remotely operable battery constant current discharge apparatus as claimed in claim 2, wherein: in the step S5, the detection state is that each path of the MOS transistor is sequentially turned on, each path is turned on for 100mS, the shunt collects the discharge current of each path, automatically records the current of each path, and automatically calculates the number of corresponding paths to be turned on to reach the set current value.
6. A remotely operable battery constant current discharge apparatus as claimed in claim 2, wherein: in step S5, when the current is insufficient or too high, the MOS is dynamically turned on to adjust, and when the voltage of the battery pack decreases and the current does not reach the set current value, the MOS is determined according to the collected current, and a power resistor is switched.
7. A remotely operable battery constant current discharge apparatus as claimed in claim 2, wherein: in step S5, the discharging device replies with data of a corresponding format to the control device; realizing the reply of the data; the whole control device controls the discharging device, the display device is provided with the internet access, and the remote background discharging operation can be realized through the network.
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| CN202110501835.5A CN113281663A (en) | 2021-05-08 | 2021-05-08 | But long-range battery constant current discharge device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117239261A (en) * | 2022-06-08 | 2023-12-15 | 荣耀终端有限公司 | Lithium battery capacity recovery circuit, recovery method, electronic equipment and adapter |
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