CN220964649U - Series formation power supply device - Google Patents
Series formation power supply device Download PDFInfo
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- CN220964649U CN220964649U CN202322524505.5U CN202322524505U CN220964649U CN 220964649 U CN220964649 U CN 220964649U CN 202322524505 U CN202322524505 U CN 202322524505U CN 220964649 U CN220964649 U CN 220964649U
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- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 24
- 230000005669 field effect Effects 0.000 claims description 27
- 238000012360 testing method Methods 0.000 description 10
- 230000002457 bidirectional effect Effects 0.000 description 8
- 238000007600 charging Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 101150063504 CAN2 gene Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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Abstract
The utility model aims to provide a serial formation power supply device which has a simple structure, can improve charge and discharge efficiency, reduce cost and reduce occupied area. The utility model comprises an electric control layer, an upper computer, a middle computer, an AC/DC power supply, a DC/DC power supply, an auxiliary layer and a serial control board, wherein the electric control layer, the AC/DC power supply, the DC/DC power supply, the auxiliary layer and the serial control board are sequentially connected, the upper computer is connected with the auxiliary layer through the middle computer, the middle computer is connected with the AC/DC power supply and the serial control board, and the serial control board is connected with the anode and the cathode of a battery product. The utility model is applied to the technical field of battery formation power supply devices.
Description
Technical Field
The utility model is applied to the technical field of battery formation power supply devices, and particularly relates to a serial formation power supply device.
Background
With the rapid development of new energy industries, fields such as electric automobiles, energy storage systems, electric tools, solar photovoltaic power generation systems and the like are vigorously developed under market demands, and power batteries are widely applied to the fields, so that safe, reliable and efficient use of the batteries is an important problem in the new energy industries. Battery formation is an important step in battery production testing, and is also a key step. The testing is typically performed prior to battery assembly and packaging to ensure that the performance of the battery in actual use meets specifications. In addition, the formation test may also help the manufacturer eliminate any potential problems or defects to ensure reliability and safety of the battery. However, most parallel formation power supply devices are adopted in the market at present, and the scheme has the defects of complex circuit, high cost, large volume, low charge and discharge efficiency and the like, so that the market demand can not be met gradually, the equipment cost is high, and the parallel formation devices need to measure a plurality of batteries at the same time, so that the equipment cost is high; the occupied space is large: the parallel formation device needs to be provided with a plurality of batteries, so that the occupation space is larger; limiting the number of samples; since parallel chemistry devices require simultaneous measurement of multiple cells, in some laboratories or factories, it may not be possible to test all cell samples at the same time. Therefore, it is necessary to provide a serial formation power supply device having a simple structure, capable of improving charge/discharge efficiency, reducing cost, and reducing occupied area.
Disclosure of utility model
The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the serial formation power supply device which has a simple structure, can improve the charge and discharge efficiency, reduce the cost and reduce the occupied area.
The technical scheme adopted by the utility model is as follows: the utility model comprises an electric control layer, an upper computer, a middle computer, an AC/DC power supply, a DC/DC power supply, an auxiliary layer and a serial control board, wherein the electric control layer, the AC/DC power supply, the DC/DC power supply, the auxiliary layer and the serial control board are sequentially connected, the upper computer is connected with the auxiliary layer through the middle computer, the middle computer is connected with the AC/DC power supply and the serial control board, and the serial control board is connected with the anode and the cathode of a battery product.
The above scheme shows that the serial formation power supply device is a formation bidirectional feedback type power supply device, and an independent battery cell is connected in series through a MOSFET switch of the device or an abnormal battery cell is bypassed; configuring high-voltage bidirectional high-power programmable DC-DC to realize constant-current charging and discharging of the series battery; the online seamless switching of the battery can be realized; the charge-discharge conversion efficiency is higher; the battery cell serial test ensures the consistency of the height of the battery cells after formation; the formation test of the soft package power battery can be realized; the energy conversion efficiency is improved, and the production and equipment cost is saved; the autonomous high-voltage bidirectional DC-DC program control technology is not only suitable for serial formation, but also can be used in the fields of PACK test and the like; the number of power supplies is small, the failure rate is reduced, the maintenance time is shortened, and the overhead line installation efficiency is improved; and a serial technology is used, so that the consistency of the test battery cells is better.
The serial control board comprises a first power MOS switch group, a second power MOS switch group and a third power MOS switch group, wherein the first power MOS switch group, the second power MOS switch group and the third power MOS switch group all comprise ten groups of parallel power MOS switch chips, the first power MOS switch group and the second power MOS switch group are connected back to back, the first power MOS switch group is connected with the anode of a battery product, the second power MOS switch group is connected with the third power MOS switch group, and the third power MOS switch group is connected with the cathode of the battery product.
The serial control board further comprises a first driving chip, a second driving chip, a first field effect tube and a second field effect tube, wherein the first field effect tube and the second field effect tube are connected with an IO interface of the serial control board, the drain electrode of the first field effect tube and the drain electrode of the second field effect tube are respectively connected into an IN+ pin of the first driving chip and an IN+ pin of the second driving chip, a CLAMP1 pin and a DRIVE1 pin of the first driving chip are connected with the first power MOS switch group, and a CLAMP2 pin and a DRIVE2 pin of the second driving chip are connected with the second power MOS switch group.
IN one preferred scheme, the serial control board further comprises a third driving chip and a third field effect transistor, wherein the third field effect transistor is connected with the IO interface of the serial control board, the drain electrode of the third field effect transistor is connected with the IN+ pin of the third driving chip, and the CLAMP1 pin and the DRIVE1 pin of the third driving chip are connected with the third power MOS switch group.
Drawings
FIG. 1 is a block diagram of the structure of the present utility model;
FIG. 2 is a schematic circuit diagram of a first portion of the serial control board;
FIG. 3 is a schematic circuit diagram of a second portion of the serial control board;
fig. 4 is a schematic circuit diagram of a third portion of the serial control board.
Detailed Description
As shown in fig. 1, in this embodiment, the present utility model includes an electric control layer 1, an upper computer 2, a middle computer 3, an AC/DC power supply 4, a DC/DC power supply 5, an auxiliary layer 6, and a serial control board 7, wherein the electric control layer 1, the AC/DC power supply 4, the DC/DC power supply 5, the auxiliary layer 6, and the serial control board 7 are sequentially connected, the upper computer 2 is connected with the auxiliary layer 6 through the middle computer 3, the middle computer 3 is connected with the AC/DC power supply 4 and the serial control board 7, and the serial control board 7 is connected to the anode and the cathode of a battery product.
The electric control layer 1 comprises a circuit breaker, a lightning arrester, a three-phase electric energy meter, an emergency stop switch, a wiring terminal block and the like, on-off control of a three-phase power grid and charge and discharge electric energy collection. The AC/DC power supply 4 adopts a fixed-output bidirectional AC/DC power supply, and the DC/DC power supply 5 adopts a high-voltage bidirectional DC/DC programmable power supply. The AC/DC power supply 4 is used as a bidirectional seamless switching power supply module and adopts an advanced three-phase zero-line-free design, and has the advantages of high reliability, strong power grid and environment adaptability, bidirectional seamless switching without voltage difference, high efficiency, low harmonic wave and the like. The DC/DC power supply 5 is one of the core components of the formation power supply as a high voltage DC/DC programmable power supply, the main function of which is to transfer energy from one capacitor to another. Such a converter can transfer energy between two capacitors to achieve charging and discharging.
The central computer 3 plays an important role in the whole system, the RS485 mode of the central computer acquires electric energy meter data, the CAN2 controls bidirectional DC/DC, the CAN0 controls 2 paths of serial control boards 7, the GPIO configures an auxiliary layer, the central computer 2 exchanges information with the upper computer 2 through ETH, and the output voltage and current of a power supply are controlled: the neutral position machine 3 can adjust the output voltage and current of the power supply by sending control signals. These control signals may be generated in an automatic or manual mode as desired.
And the upper computer 2 goes down the power generation pool test step to the middle computer 3, and obtains current, voltage, power cabinet state information and the like from the middle computer 3.
The serial control board 7, also called a battery switching module, is an important component, and is mainly used for controlling connection and disconnection between batteries so as to realize serial and parallel bypass of each battery.
The auxiliary layer 6 is used for being connected into a power loop of the system in series, and the inside of the auxiliary layer comprises a charging main path and a discharging main path.
As shown in fig. 2, in this embodiment, the serial control board 7 includes a first power MOS switch group 71, a second power MOS switch group 72, and a third power MOS switch group 73, where the first power MOS switch group 71, the second power MOS switch group 72, and the third power MOS switch group 73 include ten groups of power MOS switch chips connected in parallel, the first power MOS switch group 71 and the second power MOS switch group 72 are connected back to back, the first power MOS switch group 71 is connected to an anode of a battery product, the second power MOS switch group 72 is connected to the third power MOS switch group 73, and the third power MOS switch group 73 is connected to a cathode of the battery product. Multiple parallel power MOS switches are used to increase the overcurrent capability. The power MOS switch chip is TPHR9203PL1.
The first power MOS switch group 71 and the second power MOS switch group 72 together conduct the series battery, and the back-to-back power MOS of the first power MOS switch group 71 near the positive electrode of the battery is ten parallel power MOS switch chips, so as to string the battery into the circuit. The back-to-back power MOS of the second power MOS switch group 72 near the common terminal is ten groups of parallel power MOS switch chips, and the third power MOS switch group 73 is used as a bypass power MOS, so as to kick the battery away and bypass the battery.
The connection between the second power MOS switch group 72 and the third power MOS switch group 73 is used as a common terminal, and the current can be passed through the common terminal to the battery, or passed through the common terminal to the bypass MOS to bypass the battery.
As shown IN fig. 3, IN this embodiment, the serial control board 7 further includes a first driving chip U602, a second driving chip U603, a first field effect transistor Q601 and a second field effect transistor Q602, where the first field effect transistor Q601 and the second field effect transistor Q602 are connected to the IO interface of the serial control board 7, and the drain of the first field effect transistor Q601 and the drain of the second field effect transistor Q602 are respectively connected to the in+ pin of the first driving chip U602 and the in+ pin of the second driving chip U603, the CLAMP1 pin and the DRIVE1 pin of the first driving chip U602 are connected to the first power MOS switch group 71, and the CLAMP2 pin and the DRIVE2 pin of the second driving chip U603 are connected to the second power MOS switch group 72. The model numbers of the first driving chip U602 and the second driving chip U603 are 1EDI20I12MFXUMA1.
As shown IN fig. 4, IN this embodiment, the serial control board 7 further includes a third driving chip U702 and a third field effect transistor Q701, where the third field effect transistors Q701 are connected to the IO interface of the serial control board 7, a drain electrode of the third field effect transistor Q701 is connected to an in+ pin of the third driving chip U702, and a CLAMP1 pin and a DRIVE1 pin of the third driving chip U702 are connected to the third power MOS switch group 73. The model number of the third driver chip U702 is 1EDI20I12MFXUMA1.
In this embodiment, in the tandem formation apparatus, the serial control board 7 is typically installed between the positive electrode and the negative electrode of the battery pack, and serves as a relay station for controlling connection and disconnection between the batteries. In addition, the serial control board 7 is usually provided with a plurality of control MOSFETs to support the serial connection or parallel connection of a plurality of batteries.
The serial control board 7 realizes the switching-in and the switching-out of the battery by controlling the serial MOSFET switch and the bypass MOSFET switch. When the batteries need to be connected in series, the serial control board 7 connects the batteries together by closing the series MOSFET switch. When the battery needs to be bypassed, the serial control board 7 cuts the battery out of the loop by opening the serial MOSFET switch and closing the bypass MOSFET. Through controlling the switch time sequence, the continuous and seamless cut-out of the serial batteries is satisfied
In addition, the serial control board 7 needs to monitor the battery tab voltage, the auxiliary voltage and the line voltage to ensure that each battery is in a normal working state. If a certain battery fails or is overloaded, the serial control board 7 can cut out the battery in time, so that dangerous situations such as short circuit or fire of the battery are avoided.
In this embodiment, the median machine 3 has a plurality of functions. Monitoring the performance of the power supply: the central processing unit 3 can monitor various parameters such as output voltage, output current, temperature, load state and the like of the power supply. If the parameters are beyond the preset safety range, the central computer can send an alarm and take appropriate measures to protect the power supply and the load; recording and analyzing data: the central processor may record performance data of the power supply and analyze it to detect any potential faults or problems. These data can be used to make better maintenance plans and predict the life of the power supply.
Communicate with other devices: the central computer 3 may communicate with other devices, such as a computer or other controller. These devices can control the power supply through the central processing unit 3 and acquire data from the power supply in order to better manage the whole system.
In this embodiment, the host computer 2 has a plurality of functions. Monitoring and recording performance parameters of the power supply: the upper computer 2 can monitor and record parameters such as output voltage, current, temperature and the like of the power supply in real time, generate related data reports, and help a user to know battery test production and the running condition of the power supply; control and adjust the mode of operation of the power supply: the upper computer can control the adjustment of parameters such as on/off, output voltage, current and the like of the power supply by sending control signals so as to adapt to different load demands; remote control power: the upper computer can remotely control the power supply through a network, realize remote on/off, regulate output voltage and current and other operations, and facilitate remote control and management; analyzing and optimizing the performance of the power supply: the upper computer can analyze and optimize the power supply operation data so as to help a user to better know the performance and the operation state of the power supply and bring forward improvement measures.
In this embodiment, the auxiliary layer 6 is used for being connected into a power loop of the system, and the inside of the auxiliary layer includes two main paths of charging and discharging. In the charging stage, the auxiliary layer 6 is used for relieving instant heavy current impact when the single battery cell exits. When the single battery core is required to be withdrawn on line under the condition of meeting the process step, the auxiliary layer 6 synchronously inputs the false battery (QCx is realized by the voltage drop of the body diode) similar to the battery voltage on line, the voltage stability of the whole Force loop is ensured, the auxiliary layer gradually and stepwise withdraws the false battery completely after the single battery core is completely withdrawn, the continuous and stable withdrawal of the single battery core during the charge and discharge is realized, and the working battery core is not influenced. The whole stage is the complete exit flow of the single cell charging. The exit flow of the other serial-in battery cells is identical, and each single battery cell meeting the conditions needs to be queued away from the exit flow in a time-sharing way. In the discharging stage, the auxiliary layer 6 is connected with a pad power supply in series on the main circuit, so that the series-connected battery can be thoroughly discharged, and the battery can be continuously discharged to 0V.
Claims (4)
1. A serial formation power supply device, characterized in that: the intelligent control system comprises an electric control layer (1), an upper computer (2), a middle computer (3), an AC/DC power supply (4), a DC/DC power supply (5), an auxiliary layer (6) and a serial control board (7), wherein the electric control layer (1), the AC/DC power supply (4), the DC/DC power supply (5), the auxiliary layer (6) and the serial control board (7) are sequentially connected, the upper computer (2) is connected with the auxiliary layer (6) through the middle computer (3), the middle computer (3) is connected with the AC/DC power supply (4) and the serial control board (7), and the serial control board (7) is connected with the anode and the cathode of a battery product.
2. A serial formation power supply device according to claim 1, characterized in that: the serial control board (7) comprises a first power MOS switch group (71), a second power MOS switch group (72) and a third power MOS switch group (73), wherein the first power MOS switch group (71), the second power MOS switch group (72) and the third power MOS switch group (73) comprise ten groups of parallel power MOS switch chips, the first power MOS switch group (71) and the second power MOS switch group (72) are connected back to back, the first power MOS switch group (71) is connected with the positive electrode of a battery product, the second power MOS switch group (72) is connected with the third power MOS switch group (73), and the third power MOS switch group (73) is connected with the negative electrode of the battery product.
3. A serial formation power supply device according to claim 2, characterized in that: the serial control board (7) further comprises a first driving chip (U602), a second driving chip (U603), a first field effect tube (Q601) and a second field effect tube (Q602), the first field effect tube (Q601) and the second field effect tube (Q602) are connected with the IO interface of the serial control board (7), the drain electrode of the first field effect tube (Q601) and the drain electrode of the second field effect tube (Q602) are respectively connected into the IN+ pin of the first driving chip (U602) and the IN+ pin of the second driving chip (U603), the CLAMP1 pin and the DRIVE1 pin of the first driving chip (U602) are connected with the first power MOS switch group (71), and the CLAMP2 pin and the DRIVE2 pin of the second driving chip (U603) are connected with the second power MOS switch group (72).
4. A serial formation power supply device according to claim 2, characterized in that: the serial control board (7) further comprises a third driving chip (U702) and a third field effect transistor (Q701), the third field effect transistor (Q701) is connected with the IO interface of the serial control board (7), the drain electrode of the third field effect transistor (Q701) is connected with the IN+ pin of the third driving chip (U702), and the CLAMP1 pin and the DRIVE1 pin of the third driving chip (U702) are connected with the third power MOS switch group (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322524505.5U CN220964649U (en) | 2023-09-18 | 2023-09-18 | Series formation power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322524505.5U CN220964649U (en) | 2023-09-18 | 2023-09-18 | Series formation power supply device |
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| Publication Number | Publication Date |
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| CN220964649U true CN220964649U (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322524505.5U Active CN220964649U (en) | 2023-09-18 | 2023-09-18 | Series formation power supply device |
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|---|---|
| CN (1) | CN220964649U (en) |
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2023
- 2023-09-18 CN CN202322524505.5U patent/CN220964649U/en active Active
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