Series formation power supply device
By using a minimalist series power supply device in the battery-forming equipment, the problems of high costs, complex components, long production and debugging cycles, heavy maintenance burden and large energy efficiency losses in the prior art are solved, and a more efficient and lower-cost battery charging and discharging process is achieved.
Patent Information
- Application Number
- CN202421531081.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The existing battery-based equipment solutions have problems such as high cost, complex components, long production and commissioning cycles, heavy maintenance burden and large energy efficiency losses.
The use of minimalist series-connected power supply device is used to eliminate complex input and cutting bypass systems. By optimizing the equipment structure and design, it improves charging and discharging efficiency, reduces the number of modules and design complexity, simplifies the installation and debugging process, and optimizes the circuit design to reduce loop loss.
Reduces testing costs, improves charging and discharging conversion efficiency and testing efficiency, reduces system losses, and simplifies maintenance processes.
Smart Images
Figure CN222940560U_ABST
Abstract
Description
Technical Field
[0001] The utility model is applied to the technical field of formation and grading, and particularly relates to a series formation power supply device. Background Art
[0002] The current battery formation equipment solutions have limitations in many aspects, especially in terms of production efficiency, cost control, environmental impact, and maintenance convenience. Specifically:
[0003] (1) Complex components and high cost: The device design involves numerous modular components, which not only significantly increases the bill of materials cost but also enhances the complexity of processing and assembly. The high module dependency directly drives up the overall manufacturing cost;
[0004] (2) Long production and debugging cycles and low efficiency: From the precision machining of individual components to the integrated installation of the entire system and then to the comprehensive testing before operation, this series of processes takes a long time, seriously affecting the turnover efficiency of the equipment from production to use and reducing the overall production capacity output;
[0005] (3) Heavy maintenance burden: Given the complexity of the system composition, its subsequent maintenance work is particularly onerous, including but not limited to fault diagnosis, component replacement, and regular calibration, all of which require highly specialized skills and a large amount of resource investment, increasing the operating cost in the long run;
[0006] (4) Large energy efficiency loss: The design of configuring multiple bypass boards in each formation unit of the equipment, although aiming to ensure circuit flexibility and safety, inevitably introduces a relatively high loop energy loss. This energy consumption not only directly reduces the energy utilization efficiency but also goes against the current industry trend of advocating green, low-carbon, energy conservation, and emission reduction.
[0007] In summary, it is necessary to provide a series formation power supply device with lower test cost, reduced system loss, improved charge and discharge conversion efficiency, and enhanced test efficiency. Content of the Utility Model
[0008] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a series formation power supply device with lower test cost, reduced system loss, improved charge and discharge conversion efficiency, and enhanced test efficiency.
[0009] The technical solution adopted by the utility model is as follows: The utility model includes several cells to be tested, a host computer, a middle computer, a formation power supply, a collection module, and several probes connected in series. The formation power supply is connected to the corresponding cells through each group of probes, the collection module is connected to the probes, both the formation power supply and the collection module are connected to the middle computer, and the middle computer communicates with the host computer.
[0010] It can be seen from the above scheme that the host computer sends instructions to the intermediate computer, and the intermediate computer uploads the collected battery information to the host computer. After the current flows out of the formation power supply, it flows into each of the battery cells through the probes connected in series. During the formation process, the acquisition module is used to collect parameters such as the voltage of the battery cell. The present application adopts a minimalist series connection technology, eliminating the complex switching bypass system, improving the system charging and discharging efficiency, and reducing the energy consumption of the factory. At the same time, by optimizing the equipment structure and design, the system charging and discharging efficiency is improved, thereby improving production efficiency; by reducing the number of modules used in the equipment and optimizing the design, the production cost is reduced; the integrated design simplifies the installation and debugging process of the equipment and improves work efficiency; the circuit design is optimized to reduce the loop loss during the formation process, and the series charging and discharging is conducive to improving the consistency of the battery cells.
[0011] A preferred solution is that the acquisition module includes a main control board, a first CAN transceiver and a second CAN transceiver, the MCU_CAN1_RX pin and the MCU_CAN1_TX pin of the first CAN transceiver are connected to the corresponding pins of the main control board, and the MCU_CAN2_RX pin and the MCU_CAN2_TX pin of the second CAN transceiver are connected to the corresponding pins of the main control board.
[0012] A preferred solution is that the acquisition module also includes a first CAN interface and a second CAN interface, the VOB_1 pin and the VIA_1 pin of the first CAN interface are connected to the corresponding pins of the first CAN transceiver, the VOB_2 pin and the VIA_2 pin of the second CAN interface are connected to the corresponding pins of the second CAN transceiver, and the CAN1_P pin and the CAN1_N pin of the first CAN interface and the CAN2_P pin and the CAN2_N pin of the second CAN interface are connected to the mid-position computer.
[0013] A preferred solution is that the acquisition module also includes a first analog-to-digital converter and a second analog-to-digital converter, the ADC1_DOUTA pin and ADC1_DOUTB pin of the first analog-to-digital converter are connected to the corresponding pins of the main control board, and the ADC2_DOUTA pin and ADC2_DOUTB pin of the second analog-to-digital converter are connected to the corresponding pins of the main control board.
[0014] A preferred solution is that the acquisition module also includes a first operational amplifier and a second operational amplifier, the output end of the first operational amplifier is connected to the ADC1_VIN1 pin of the first analog-to-digital converter, and the output end of the second operational amplifier is connected to the ADC2_VIN1 pin of the second analog-to-digital converter.
[0015] One preferred solution is that the acquisition module further includes a first relay and a second relay. The CELL_OP_1_P pin and the CELL_OP_1_N pin of the first relay are respectively connected to the non-inverting input terminal and the inverting input terminal of the first operational amplifier. The AUX_OP_9_P pin and the AUX_OP_9_N pin of the second relay are respectively connected to the non-inverting input terminal and the inverting input terminal of the second operational amplifier.
[0016] One preferred solution is that the acquisition module further includes a first acquisition interface and a second acquisition interface. The BAT9_SENSE_P pin and the BAT9_SENSE_N pin of the first relay are respectively connected to the corresponding pins of the first acquisition interface. The DCR_Z_P_1 pin and the DCR_Z_N_1 pin of the second relay are respectively connected to the corresponding pins of the second acquisition interface. Both the first acquisition interface and the second acquisition interface are connected to the probe.
[0017] One preferred solution is that the acquisition module further includes a third relay and a third acquisition interface. The TEMP_CLTR pin of the third relay is connected to the corresponding pin of the main control board. The EX_TEMP pin of the third relay is connected to the corresponding pin of the third acquisition interface. The third acquisition interface is connected to the probe. Description of the Drawings
[0018] Figure 1 is the principle block diagram of the present utility model;
[0019] Figure 2 is the principle block diagram of the acquisition module;
[0020] Figure 3 is the schematic diagram of the middle computer;
[0021] Figure 4 is the circuit schematic diagram of the main control board;
[0022] Figure 5 is the circuit schematic diagram of the first CAN transceiver, the second CAN transceiver, the first CAN interface, and the second CAN interface;
[0023] Figure 6 is the circuit schematic diagram of the first analog-to-digital converter;
[0024] Figure 7 is the circuit schematic diagram of the second analog-to-digital converter;
[0025] Figure 8 is the circuit schematic diagram of the first operational amplifier;
[0026] Figure 9It is the circuit schematic diagram of the second operational amplifier;
[0027] Figure 10 It is the circuit schematic diagram of the first relay and the second relay;
[0028] Figure 11 It is the circuit schematic diagram of the first acquisition interface and the second acquisition interface;
[0029] Figure 12 It is the circuit schematic diagram of the third relay and the third acquisition interface. Detailed implementation mode
[0030] As Figures 1 to 3 shown, in this embodiment, the utility model includes a plurality of cells 1 to be measured, a host computer 2, a middle computer 3, a formation power supply 4, an acquisition module 5, and a plurality of probes 6 connected in series. The formation power supply 4 is connected to the corresponding cell 1 through each group of probes 6. The acquisition module 5 is connected to the probes 6. The formation power supply 4 and the acquisition module 5 are both connected to the middle computer 3, and the middle computer 3 communicates with the host computer 2.
[0031] The formation power supply 4 includes a bidirectional AC / DC power supply and a bidirectional DC / DC power supply; the formation power supply 4 provides a stable power output to ensure the stability of the charging and discharging voltage and current of the cell 1 during the formation process; the power supply can control the charging and discharging of multiple cells 1; when discharging, the energy released by the battery can be fed back to the power grid or supplied to other electrical equipment to save electric energy.
[0032] The middle computer 3 is used to receive the instructions of the host computer 2 and control the working state of the formation power supply; it is used to receive the data of the acquisition module 5 and the formation power supply 4 and send the data to the host computer 2 for processing.
[0033] The acquisition module 5 is used to collect parameters such as the tab voltage of the cell 1 and the probe contact, and send the data to the middle computer 3 for processing; the acquisition module 5 has high-precision measurement capabilities and can accurately reflect the charging and discharging state of the cell 1; it has fast real-time acquisition capabilities and can cooperate with the current to feedback the contact impedance of the probe 6 in real time; it reads the temperature information of each battery channel in real time and sends the data to the middle computer 3.
[0034] The probe 6 provides a fixed and connecting platform for the cell 1 to ensure stable and reliable electrical connection between the cell 1 and the formation power supply 4; it collects parameters such as the voltage and temperature of each cell 1 in real time.
[0035] The host computer 2 sends instructions to the middle computer, and the middle computer 3 uploads the collected battery information to the host computer 2. After the current flows out of the formation power supply 4, it flows into each battery cell 1 through the series-connected probes 6.
[0036] As Figures 4 to 5 shown, in this embodiment, the acquisition module 5 includes a main control board U701, a first CAN transceiver U1001, and a second CAN transceiver U1003. The MCU_CAN1_RX pin and MCU_CAN1_TX pin of the first CAN transceiver U1001 are connected to the corresponding pins of the main control board U701, and the MCU_CAN2_RX pin and MCU_CAN2_TX pin of the second CAN transceiver U1003 are connected to the corresponding pins of the main control board U701. The model of the main control board U701 is STM32F407VGT6; the models of both the first CAN transceiver U1001 and the second CAN transceiver U1003 are ADuM121N0BRZ.
[0037] As Figure 5 shown, in this embodiment, the acquisition module 5 further includes a first CAN interface U1002 and a second CAN interface U1004. The VOB_1 pin and VIA_1 pin of the first CAN interface U1002 are connected to the corresponding pins of the first CAN transceiver U1001, and the VOB_2 pin and VIA_2 pin of the second CAN interface U1004 are connected to the corresponding pins of the second CAN transceiver U1003. The CAN1_P pin, CAN1_N pin of the first CAN interface U1002, the CAN2_P pin, and CAN2_N pin of the second CAN interface U1004 are connected to the middle computer 3. The models of both the first CAN interface U1002 and the second CAN interface U1004 are SN65HVD232DR. The first CAN interface U1002 is used for the test data communication of the battery cell 1, and the second CAN interface is used for the data communication during ADC calibration.
[0038] As Figures 6 to 7 shown, in this embodiment, the acquisition module 5 further includes a first analog-to-digital converter U801 and a second analog-to-digital converter U802. The ADC1_DOUTA pin and ADC1_DOUTB pin of the first analog-to-digital converter U801 are connected to the corresponding pins of the main control board U701, and the ADC2_DOUTA pin and ADC2_DOUTB pin of the second analog-to-digital converter U802 are connected to the corresponding pins of the main control board U701. The models of both the first analog-to-digital converter U801 and the second analog-to-digital converter U802 are AD7608BSTZ.
[0039] As Figures 8 to 9 shown, in this embodiment, the acquisition module 5 further includes a first operational amplifier U1101 and a second operational amplifier U1201. The output terminal of the first operational amplifier U1101 is connected to the ADC1_VIN1 pin of the first analog-to-digital converter U801, and the output terminal of the second operational amplifier U1201 is connected to the ADC2_VIN1 pin of the second analog-to-digital converter U802. The models of the first operational amplifier U1101 and the second operational amplifier U1201 are both INA149AIDR.
[0040] As Figure 10 shown, in this embodiment, the acquisition module 5 further includes a first relay K1301 and a second relay K1701. The CELL_OP_1_P pin and the CELL_OP_1_N pin of the first relay K1301 are respectively connected to the non-inverting input terminal and the inverting input terminal of the first operational amplifier U1101, and the AUX_OP_9_P pin and the AUX_OP_9_N pin of the second relay K1701 are respectively connected to the non-inverting input terminal and the inverting input terminal of the second operational amplifier U1201.
[0041] As Figure 11 shown, in this embodiment, the acquisition module 5 further includes a first acquisition interface J2301 and a second acquisition interface J2303. The BAT9_SENSE_P pin and the BAT9_SENSE_N pin of the first relay K1301 are respectively connected to the corresponding pins of the first acquisition interface J2301, and the DCR_Z_P_1 pin and the DCR_Z_N_1 pin of the second relay K1701 are respectively connected to the corresponding pins of the second acquisition interface J2303. Both the first acquisition interface J2301 and the second acquisition interface J2303 are connected to the probe 6. The models of the first acquisition interface J2301 and the second acquisition interface J2303 are both GWRB201-0801A007E2BN. Both the first acquisition interface J2301 and the second acquisition interface J2303 are voltage sampling interfaces. The first acquisition interface J2301 serves as an ear tab voltage acquisition port, and the second acquisition interface J2303 serves as a probe voltage acquisition port.
[0042] As Figure 12As shown, in this embodiment, the acquisition module 5 further includes a third relay U1901 and a third acquisition interface J1901. The TEMP_CLTR pin of the third relay U1901 is connected to the corresponding pin of the main control board U701. The EX_TEMP pin of the third relay U1901 is connected to the corresponding pin of the third acquisition interface J1901. The third acquisition interface J1901 is connected to the probe 6. The model of the third acquisition interface J1901 is A2006WVU-S-2x8P, and the third acquisition interface J1901 serves as a temperature sampling interface.
Claims
1. A series-connected power supply device, comprising a plurality of cells to be tested (1), characterized in that: The series-connected formation power supply device further comprises an upper computer (2), a middle computer (3), a formation power supply (4), a collection module (5), and a plurality of probes (6) arranged in series, wherein the formation power supply (4) is connected to the corresponding battery cell (1) via each group of the probes (6), the collection module (5) is connected to the probes (6), the formation power supply (4) and the collection module (5) are both connected to the middle computer (3), and the middle computer (3) communicates with the upper computer (2).
2. A series-connected formation power supply device according to claim 1, characterized in that: The acquisition module (5) comprises a main control board (U701), a first CAN transceiver (U1001) and a second CAN transceiver (U1003), wherein the MCU_CAN1_RX pin and the MCU_CAN1_TX pin of the first CAN transceiver (U1001) are connected to corresponding pins of the main control board (U701), and the MCU_CAN2_RX pin and the MCU_CAN2_TX pin of the second CAN transceiver (U1003) are connected to corresponding pins of the main control board (U701).
3. A series-connected formation power supply device according to claim 2, characterized in that: The acquisition module (5) also includes a first CAN interface (U1002) and a second CAN interface (U1004); the VOB_1 pin and the VIA_1 pin of the first CAN interface (U1002) are connected to the corresponding pins of the first CAN transceiver (U1001); the VOB_2 pin and the VIA_2 pin of the second CAN interface (U1004) are connected to the corresponding pins of the second CAN transceiver (U1003); the CAN1_P pin and the CAN1_N pin of the first CAN interface (U1002) and the CAN2_P pin and the CAN2_N pin of the second CAN interface (U1004) are connected to the intermediate computer (3).
4. A series-connected formation power supply device according to claim 2, characterized in that: The acquisition module (5) further comprises a first analog-to-digital converter (U801) and a second analog-to-digital converter (U802); the ADC1_DOUTA pin and the ADC1_DOUTB pin of the first analog-to-digital converter (U801) are connected to corresponding pins of the main control board (U701); and the ADC2_DOUTA pin and the ADC2_DOUTB pin of the second analog-to-digital converter (U802) are connected to corresponding pins of the main control board (U701).
5. A series-connected formation power supply device according to claim 4, characterized in that: The acquisition module (5) further comprises a first operational amplifier (U1101) and a second operational amplifier (U1201), wherein the output end of the first operational amplifier (U1101) is connected to the ADC1_VIN1 pin of the first analog-to-digital converter (U801), and the output end of the second operational amplifier (U1201) is connected to the ADC2_VIN1 pin of the second analog-to-digital converter (U802).
6. A series-connected formation power supply device according to claim 5, characterized in that: The acquisition module (5) further comprises a first relay (K1301) and a second relay (K1701); a CELL_OP_1_P pin and a CELL_OP_1_N pin of the first relay (K1301) are respectively connected to the same-direction input terminal and the reverse input terminal of the first operational amplifier (U1101); and an AUX_OP_9_P pin and an AUX_OP_9_N pin of the second relay (K1701) are respectively connected to the same-direction input terminal and the reverse input terminal of the second operational amplifier (U1201).
7. A series-connected formation power supply device according to claim 6, characterized in that: The acquisition module (5) further comprises a first acquisition interface (J2301) and a second acquisition interface (J2303); the BAT9_SENSE_P pin and the BAT9_SENSE_N pin of the first relay (K1301) are respectively connected to the pins corresponding to the first acquisition interface (J2301); the DCR_Z_P_1 pin and the DCR_Z_N_1 pin of the second relay (K1701) are respectively connected to the pins corresponding to the second acquisition interface (J2303); and the first acquisition interface (J2301) and the second acquisition interface (J2303) are both connected to the probe (6).
8. A series-connected formation power supply device according to claim 2, characterized in that: The acquisition module (5) further comprises a third relay (U1901) and a third acquisition interface (J1901), the TEMP_CLTR pin of the third relay (U1901) being connected to a corresponding pin of the main control board (U701), the EX_TEMP pin of the third relay (U1901) being connected to a corresponding pin of the third acquisition interface (J1901), and the third acquisition interface (J1901) being connected to the probe (6).