CN210323303U - Energy transfer type charging and discharging test system - Google Patents
Energy transfer type charging and discharging test system Download PDFInfo
- Publication number
- CN210323303U CN210323303U CN201920960337.5U CN201920960337U CN210323303U CN 210323303 U CN210323303 U CN 210323303U CN 201920960337 U CN201920960337 U CN 201920960337U CN 210323303 U CN210323303 U CN 210323303U
- Authority
- CN
- China
- Prior art keywords
- battery pack
- converter
- input
- tested
- bidirectional
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to an energy transfer formula charge-discharge test system for to two group battery that await measuring carry out the charge-discharge test simultaneously, including two-way DC-DC converter, main control unit and human-computer interaction equipment, main control unit with two-way DC-DC converter human-computer interaction equipment electric connection respectively, main control unit is used for control the mode of two-way DC-DC converter, two-way DC-DC converter has first input/output end and second input/output end, first input/output end with second input/output end connects two respectively the group battery that awaits measuring, and control two the group battery that awaits measuring charges respectively/discharges, and is two the group battery that awaits measuring charges simultaneously/discharges the test. The product of the utility model is simple in structure, easy to produce, low in cost, convenient to popularize.
Description
Technical Field
The utility model relates to a battery charge-discharge technology field, concretely relates to energy transfer formula charge-discharge test system.
Background
With the shortage of energy and the increasing environmental pollution, lithium batteries, as a new type of energy, gradually replace conventional lead-acid batteries due to their excellent energy density, cycle life and charge-discharge characteristics. However, due to the characteristics of the lithium battery, the lithium battery needs to be comprehensively tested in various aspects such as voltage, capacity, internal resistance and the like before the product is delivered. The charge and discharge test consumes most electricity and time, and the cost/efficiency needs to be further improved. At present, the most common practice of the charging and discharging test of the battery pack when the battery pack is taken out of a factory is to carry out full-charging-discharging-charging half-cycle on the battery pack by adopting a charging and discharging cabinet, and finally, the battery pack leaves the factory and keeps about 50 percent of electric quantity. If the traditional feedback type charging and discharging equipment is adopted, the power grid load is easily overlarge during multi-channel working, and meanwhile, because the traditional cabinet body is large in size and occupies field resources, the energy and the space are greatly wasted.
SUMMERY OF THE UTILITY MODEL
In view of this, an energy transfer type charge/discharge testing system with energy recycling and simple structure is needed.
An energy transfer type charging and discharging test system is used for simultaneously performing charging and discharging tests on two battery packs to be tested and comprises a bidirectional DC-DC converter, a main controller and a man-machine interaction device, wherein the main controller is electrically connected with the bidirectional DC-DC converter and the man-machine interaction device respectively, the main controller is used for controlling the working mode of the bidirectional DC-DC converter, the bidirectional DC-DC converter is provided with a first input/output end and a second input/output end, the first input/output end and the second input/output end are connected with the two battery packs to be tested respectively and control the two battery packs to be tested to be charged/discharged respectively, and the two battery packs to be tested are simultaneously subjected to charging/discharging tests.
Further, the two battery packs to be tested comprise a first battery pack to be tested and a second battery pack to be tested, and the first battery pack to be tested and the second battery pack to be tested complete charging and discharging test processes at the same time.
Furthermore, the first input/output end and the second input/output end are respectively arranged at two sides of the bidirectional DC-DC converter, the first input/output end is used for connecting the first battery pack to be tested, and the second input/output end is used for connecting the second battery pack to be tested.
Further, the bidirectional DC-DC converter has two operation modes, i.e. a BOOST mode and a BUCK mode, respectively, and the main controller is configured to control the switching between the two operation modes of the bidirectional DC-DC converter.
Further, when the bidirectional DC-DC converter is in the BOOST mode, the energy of the first input/output end flows to the second input/output end.
Further, when the bidirectional DC-DC converter is in the BUCK mode, the energy of the second input/output end flows to the first input/output end.
The charging device and the load device are respectively and electrically connected to the bidirectional DC-DC converter, and the main controller controls the on-off of the charging device and the load device; the charging device is used for supplementary charging under the condition of not being fully charged when the battery pack to be tested is charged; the load device is used for discharging the load under the condition of incomplete discharge when the battery pack to be tested is discharged.
Further, the bidirectional DC-DC converter has overvoltage, undervoltage, overcurrent, short circuit and reverse connection protection functions, when the battery pack to be tested has overvoltage, undervoltage, overcurrent, short circuit and reverse connection conditions, the charging and discharging circuit of the battery pack to be tested is automatically cut off, and alarm information is sent to the main controller.
Further, the human-computer interaction device comprises a display device and an input device, the human-computer interaction device is used for displaying the running state of the bidirectional DC-DC converter and the charging/discharging states of the two battery packs to be tested, and the input device is used for setting parameters of the main controller and the bidirectional DC-DC converter.
Further, the main controller is also used for storing the charging/discharging test data of the battery pack to be tested so as to facilitate the later analysis and processing.
In the energy transfer type charging and discharging test system, the two battery packs to be tested are connected at the two ends of the bidirectional DC-DC converter by utilizing the energy bidirectional transmission function of the bidirectional DC-DC converter, energy is transmitted between the two battery packs to be tested under the control of the bidirectional DC-DC converter, and the discharging energy of one battery pack to be tested is used for charging the other battery pack to be tested, so that a large amount of energy is saved, the dependence on a power grid is reduced, the test efficiency is improved, and the production cost is reduced; whole the test system need not to set up a plurality of charge-discharge cabinets, and is small, saves occupation space. The product of the utility model is simple in structure, easy to produce, low in cost, convenient to popularize.
Drawings
Fig. 1 is a schematic structural diagram of an energy transfer type charging and discharging test system according to an embodiment of the present invention.
Fig. 2 is an operation flowchart of an energy transfer type charging and discharging test system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and drawings.
Referring to fig. 1, an energy transfer type charge/discharge testing system 100 according to an embodiment of the present invention is shown, is used for simultaneously carrying out charge and discharge tests on two battery packs to be tested, comprises a bidirectional DC-DC converter 10, a main controller 20 and a man-machine interaction device 30, the main controller 20 is electrically connected to the bidirectional DC-DC converter 10 and the human-computer interaction device 30, the main controller 20 is used to control the operation mode of the bidirectional DC-DC converter 10, the bidirectional DC-DC converter 10 has a first input/output terminal and a second input/output terminal, the first input/output end and the second input/output end are respectively connected with two battery packs to be tested, and controlling the two battery packs to be tested to be charged/discharged respectively, and simultaneously carrying out charging/discharging tests on the two battery packs to be tested.
Specifically, the bidirectional DC-DC converter 10 is a device for realizing bidirectional flow of direct current electric energy, realizes bidirectional transmission of energy, and has a step-up/step-down bidirectional conversion function.
Further, the two battery packs to be tested comprise a first battery pack to be tested 60 and a second battery pack to be tested 70, and the first battery pack to be tested 60 and the second battery pack to be tested 70 complete the charging and discharging test processes at the same time. The first input/output end and the second input/output end are respectively arranged at two sides of the bidirectional DC-DC converter 10, the first input/output end is used for connecting the first battery pack to be tested 60, and the second input/output end is used for connecting the second battery pack to be tested 70.
Further, the bidirectional DC-DC converter 10 has two operation modes, i.e. a BOOST mode and a BUCK mode, respectively, and the main controller 20 is configured to control the switching between the two operation modes of the bidirectional DC-DC converter 10. When the bidirectional DC-DC converter 10 is in the BOOST mode, the energy of the first input/output terminal flows to the second input/output terminal. When the bidirectional DC-DC converter 10 is in the BUCK mode, the energy of the second input/output terminal flows to the first input/output terminal.
Specifically, the two battery packs to be tested are respectively connected to the first input/output end and the second input/output end on both sides of the bidirectional DC-DC converter 10, one of the two battery packs to be tested is a battery pack to be charged, and the other is a battery pack to be discharged.
Specifically, the first input/output end of the bidirectional DC-DC converter 10 is connected to the first battery pack to be tested 60, the second input/output end is connected to the second battery pack to be tested 70, at this time, the first battery pack to be tested 60 is a battery pack to be discharged, the second battery pack to be tested 70 is a battery pack to be charged, and the main controller 20 sets the bidirectional DC-DC converter 10 in a BOOST mode, so that energy is transmitted from the first battery pack to be tested 60 to the second battery pack to be tested 70. After the first battery pack to be tested 60 is completely discharged and the second battery pack to be tested 70 is completely charged, the battery pack to be tested at the first input/output end is replaced by a new battery pack to be charged, at this time, the second battery pack to be tested 70 connected at the second input/output end is a battery pack to be discharged, the battery pack to be tested connected at the first input/output end is a battery pack to be charged, the bidirectional DC-DC converter 10 is set to be in a BUCK mode by the main controller 20, and energy is transmitted from the second battery pack to be tested 70 to the new battery pack to be charged. And after the second battery pack to be tested 70 is discharged and the new battery pack to be charged is charged, replacing the battery pack to be tested of the second input/output end with the new battery pack to be charged, and at the moment, finishing the charge-discharge test of the second battery pack to be tested 70. The energy is transmitted in two directions alternately at two ends of the bidirectional DC-DC converter 10 under the control of the main controller 20 in a circulating way.
Specifically, because two ends of the bidirectional DC-DC converter 10 are connected to two battery packs to be tested, and the two battery packs to be tested are simultaneously subjected to charge and discharge tests, the overall test efficiency is doubled.
Further, the test system 100 further includes a charging device 40 and a load device 50, the charging device 40 and the load device 50 are respectively electrically connected to the bidirectional DC-DC converter 10, and the main controller 20 controls on/off of the charging device 40 and the load device 50; the charging device 40 is used for supplementary charging under the condition of not being fully charged when the battery pack to be tested is charged; the load device 50 is used for discharging the load under the condition that the battery pack to be tested is not completely discharged when discharging.
Specifically, because the test system 100 and the battery pack to be tested have energy loss, or different capacities of the battery pack to be tested, the battery pack to be tested may not be completely filled or completely emptied during charging and discharging, at this time, the main controller 20 controls the on/off of the switch K1/K2, so that the bidirectional DC-DC converter 10 is connected to the charging device 40 or the load device 50 to supplement charging or load discharging for the battery pack to be tested.
Further, the bidirectional DC-DC converter 10 has overvoltage, undervoltage, overcurrent, short-circuit, and reverse connection protection functions, and when the battery pack to be tested has overvoltage, undervoltage, overcurrent, short-circuit, and reverse connection conditions, the charging and discharging circuit of the battery pack to be tested is automatically cut off, and alarm information is sent to the main controller 20.
Further, the human-computer interaction device 30 includes a display and an input device, the human-computer interaction device 30 is configured to externally display the operation state of the bidirectional DC-DC converter 10 and the charging/discharging states of the two battery packs to be tested, and the input device is configured to set parameters of the main controller 20 and the bidirectional DC-DC converter 10.
Further, the main controller 20 is also configured to store the charging/discharging test data of the battery pack to be tested, so as to facilitate the post analysis processing.
Specifically, the test system 100 is suitable for various material systems such as lithium iron phosphate batteries, ternary lithium batteries, lithium titanate batteries, super capacitors, lead-acid batteries, and the like.
Specifically, referring to fig. 2, the operation steps of the test system 100 are as follows:
step one, connecting two battery packs to be tested, namely a battery pack A and a battery pack B to the first input/output end and the second input/output end on two sides of the bidirectional DC-DC converter 10 respectively, confirming that the test system 100 is connected without errors and connecting a power supply;
step two, self-checking the system, if the self-checking of the system has a fault, turning to step three, otherwise, turning to step four;
step three, removing system faults and turning to step two;
step four, setting a test step and voltage and current parameters through the human-computer interaction equipment 30;
step five, executing a testing step;
step six, measuring and calculating the sum of the residual electric quantity of the battery pack A and the battery pack B, and turning to step seven when the sum of the residual electric quantity of the battery pack A and the battery pack B is equal to 100%; when the sum of the residual electric quantity of the battery pack A and the residual electric quantity of the battery pack B is larger than 100%, turning to the step eight; when the sum of the residual electric quantity of the battery pack A and the residual electric quantity of the battery pack B is less than 100%, turning to the ninth step;
step seven, the main controller 20 sets the bidirectional DC-DC converter 10 to be in a BOOST mode, the battery pack A is discharged, the battery pack B is charged, and when the energy of the battery pack A is completely transmitted to the battery pack B, the step ten is carried out;
step eight, the main controller 20 sets the bidirectional DC-DC converter 10 to be in a BOOST mode, the battery pack a is discharged, the battery pack B is charged, when the battery pack B is charged, the main controller 20 controls the K1 to be closed, so that the battery pack a discharges the load device 50 until the battery pack a discharges, and the process goes to step ten;
step nine, the main controller 20 sets the bidirectional DC-DC converter 10 to be in a BOOST mode, the battery pack a is discharged, the battery pack B is charged, when the battery pack a is discharged, the main controller 20 controls the K2 to be closed, so that the charging device 40 charges the battery pack B until the battery pack B is charged, and the process goes to step ten;
step ten, the main controller 20 sets the bidirectional DC-DC converter 10 to be in a BUCK mode, the battery pack A is charged, the battery pack B is discharged until the battery pack A is full, and the battery pack B is empty;
eleventh, the main controller 20 sets the bidirectional DC-DC converter 10 to a BOOST mode, the battery pack a is discharged, and the battery pack B is charged until the battery pack a is empty and the battery pack B is full;
step twelve, the main controller 20 sets the bidirectional DC-DC converter 10 to be in a BUCK mode, the battery pack A is charged, the battery pack B is discharged until the battery pack A is half charged and the battery pack B is half charged;
and step thirteen, the bidirectional DC-DC converter 10 transmits the charging and discharging data to the main controller 20, and the human-computer interaction device 30 derives the charging and discharging data for analysis.
According to the energy transfer type charging and discharging test system 100, the two battery packs to be tested are connected to the two ends of the bidirectional DC-DC converter 10 by utilizing the energy bidirectional transmission function of the bidirectional DC-DC converter 10, energy is transmitted between the two battery packs to be tested under the control of the bidirectional DC-DC converter 10, and the discharging energy of one battery pack to be tested is used for charging the other battery pack to be tested, so that a large amount of energy is saved, the dependence on a power grid is reduced, the test efficiency is improved, and the production cost is reduced; the whole test system 100 does not need to be provided with a plurality of charging and discharging cabinets, is small in size and saves occupied space. The product of the utility model is simple in structure, easy to produce, low in cost, convenient to popularize.
It should be noted that the present invention is not limited to the above embodiments, and other changes can be made by those skilled in the art according to the spirit of the present invention, and all the changes made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. An energy transfer type charging and discharging test system is used for simultaneously performing charging and discharging tests on two battery packs to be tested and is characterized by comprising a bidirectional DC-DC converter, a main controller and a man-machine interaction device, wherein the main controller is electrically connected with the bidirectional DC-DC converter and the man-machine interaction device respectively, the main controller is used for controlling the working mode of the bidirectional DC-DC converter, the bidirectional DC-DC converter is provided with a first input/output end and a second input/output end, the first input/output end and the second input/output end are connected with the two battery packs to be tested respectively, the two battery packs to be tested are controlled to be charged/discharged respectively, and the two battery packs to be tested are simultaneously subjected to charging/discharging tests.
2. The energy transfer type charge-discharge test system according to claim 1, wherein the two battery packs under test comprise a first battery pack under test and a second battery pack under test, and the first battery pack under test and the second battery pack under test complete the charge and discharge test simultaneously.
3. The energy-transfer charge-discharge testing system according to claim 2, wherein the first input/output terminal and the second input/output terminal are respectively disposed at two sides of the bidirectional DC-DC converter, the first input/output terminal is used for connecting the first battery pack to be tested, and the second input/output terminal is used for connecting the second battery pack to be tested.
4. The energy-transfer charge-discharge test system according to claim 3, wherein the bidirectional DC-DC converter has two operating modes, i.e., a BOOST mode and a BUCK mode, respectively, and the main controller is configured to control switching between the two operating modes of the bidirectional DC-DC converter.
5. The energy transfer charge and discharge test system of claim 4 wherein energy at the first input/output port flows to the second input/output port when the bi-directional DC-DC converter is in the BOOST mode.
6. The energy-transfer charge-discharge test system of claim 4, wherein energy of the second input/output terminal flows to the first input/output terminal when the bidirectional DC-DC converter is in the BUCK mode.
7. The energy-transfer charge-discharge testing system according to claim 1, further comprising a charging device and a load device, wherein the charging device and the load device are respectively electrically connected to the bidirectional DC-DC converter, and the main controller controls the charging device and the load device to be turned on and off; the charging device is used for supplementary charging under the condition of not being fully charged when the battery pack to be tested is charged; the load device is used for discharging the load under the condition of incomplete discharge when the battery pack to be tested is discharged.
8. The energy transfer type charge-discharge test system according to claim 1, wherein the bidirectional DC-DC converter has protection functions of overvoltage, undervoltage, overcurrent, short circuit and reverse connection, and when the battery pack to be tested has overvoltage, undervoltage, overcurrent, short circuit and reverse connection, the charge-discharge circuit of the battery pack to be tested is automatically cut off, and alarm information is sent to the main controller.
9. The energy transfer type charge-discharge test system according to claim 1, wherein the human-machine interaction device comprises a display and input device, the human-machine interaction device is used for externally displaying the operation state of the bidirectional DC-DC converter and the charge/discharge states of the two battery packs to be tested, and the input device is used for parameter setting of the main controller and the bidirectional DC-DC converter.
10. The energy transfer type charge-discharge test system according to claim 1, wherein the main controller is further configured to store charge/discharge test data of the battery pack under test for later analysis processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920960337.5U CN210323303U (en) | 2019-06-21 | 2019-06-21 | Energy transfer type charging and discharging test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920960337.5U CN210323303U (en) | 2019-06-21 | 2019-06-21 | Energy transfer type charging and discharging test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210323303U true CN210323303U (en) | 2020-04-14 |
Family
ID=70146273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920960337.5U Active CN210323303U (en) | 2019-06-21 | 2019-06-21 | Energy transfer type charging and discharging test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210323303U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521943A (en) * | 2020-06-22 | 2020-08-11 | 湘潭银河新能源有限公司 | Battery cycle tester and testing method thereof |
-
2019
- 2019-06-21 CN CN201920960337.5U patent/CN210323303U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521943A (en) * | 2020-06-22 | 2020-08-11 | 湘潭银河新能源有限公司 | Battery cycle tester and testing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109830974B (en) | Dynamic battery grouping system and operation control method thereof | |
| CN203747439U (en) | Rechargeable battery pack structure capable of shortening charging time | |
| CN114709896B (en) | Battery charging and discharging system based on reconstruction and charging and discharging control method | |
| CN201985554U (en) | Active self-management charging device for lithium ion power battery | |
| CN108808754A (en) | Distributed battery, battery control method and electric vehicle | |
| CN102280912B (en) | Equalization circuit of charge and discharge circuit of battery pack | |
| CN104242474B (en) | A kind of mixed type energy-storage system and using method | |
| CN204905967U (en) | Harmless balanced management system of high -power group battery of modularization | |
| CN106849266A (en) | A kind of equalizing circuit for charging and discharging lithium battery energy management | |
| CN110034611A (en) | A kind of peak load shifting mixed energy storage system | |
| CN104953659A (en) | Charge-discharge equalization circuit for battery pack and charge-discharge method | |
| CN103501036B (en) | A kind of charging and discharging lithium battery pilot circuit | |
| CN204835716U (en) | Modular energy storage system | |
| CN210323303U (en) | Energy transfer type charging and discharging test system | |
| CN205301536U (en) | Battery partial volume formation equipment | |
| CN103558557A (en) | Power battery pack detection circuit | |
| CN203607887U (en) | Composite energy storage device | |
| CN216956297U (en) | Energy storage system test platform | |
| CN115483738A (en) | Switchable active equalization method and switchable active equalization circuit | |
| CN105529782B (en) | Online storage battery pack lagging battery emergency auxiliary system and working method thereof | |
| CN209982096U (en) | Battery pack management device for replacing storage battery monomer | |
| CN1889324B (en) | Battery secondary balancing charging apparatus and method | |
| CN113890159A (en) | Tray charge-discharge switching circuit | |
| CN203522276U (en) | Charging and discharging control circuit for lithium battery | |
| CN208386245U (en) | A kind of peak load shifting mixed energy storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |