CN215340223U - Battery test circuit and hydrogen fuel cell load test system - Google Patents
Battery test circuit and hydrogen fuel cell load test system Download PDFInfo
- Publication number
- CN215340223U CN215340223U CN202120472048.8U CN202120472048U CN215340223U CN 215340223 U CN215340223 U CN 215340223U CN 202120472048 U CN202120472048 U CN 202120472048U CN 215340223 U CN215340223 U CN 215340223U
- Authority
- CN
- China
- Prior art keywords
- module
- load
- battery
- capacitor
- fuel cell
- 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
Abstract
The utility model discloses a battery test circuit and a hydrogen fuel cell load test system, wherein the battery test circuit comprises: a load module; the output end of the capacitor module is connected with the load module, and the input end of the capacitor module can be connected with an external battery; the pre-charging module is connected with the input end of the capacitor module and can charge the capacitor module. Through the pre-charging module, before the battery is tested, the capacitor module is pre-charged through the power-on module, the voltage of the capacitor module is improved, and then the battery is tested, so that the output current of the battery is reduced when the battery is just powered on, the impact on the whole circuit is reduced, devices in the circuit are protected from being damaged, and the reliability is improved.
Description
Technical Field
The utility model relates to the field of battery testing, in particular to a battery testing circuit and a hydrogen fuel cell load testing system.
Background
With the development of battery technology, the performance of batteries is higher and the variety of batteries is also higher, such as lithium batteries, hydrogen fuel cells, and the like. Among them, the hydrogen fuel cell has advantages of high conversion efficiency and low working noise, and is applied to equipment such as automobiles and airplanes.
In the process of developing and producing the hydrogen fuel cell, it is necessary to know performance parameters such as output power and continuous operating time of the hydrogen fuel cell, or to know whether the performance parameters of the hydrogen fuel cell meet the standard, so the hydrogen fuel cell is generally connected with a load testing device to test the hydrogen fuel cell.
In the prior art, a hydrogen fuel cell load test device is generally provided with a capacitor bank in order to make the output voltage of the hydrogen fuel cell more stable, and the hydrogen fuel cell is connected with a load through a capacitor module. However, the structure of the existing hydrogen fuel cell load testing device is equivalent to a short circuit when the hydrogen fuel cell is just started to work due to the characteristic of the capacitor, so that a large current surge is formed in a circuit, and the capacitor bank or other devices in the circuit are easily damaged.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a battery test circuit, which can pre-charge a capacitor module through a pre-charge module.
The utility model also provides a battery test circuit and a hydrogen fuel cell load test system, which can pre-charge the capacitor module and are beneficial to reducing the impact of the hydrogen fuel cell on the circuit when the test is just started.
A battery test circuit according to an embodiment of the first aspect of the present invention includes: a load module; the output end of the capacitor module is connected with the load module, and the input end of the capacitor module can be connected with an external battery; the pre-charging module is connected with the input end of the capacitor module and can charge the capacitor module.
The battery test circuit according to the embodiment of the utility model has at least the following beneficial effects: through the pre-charging module, before the battery is tested, the capacitor module is pre-charged through the power-on module, the voltage of the capacitor module is improved, and then the battery is tested, so that the output current of the battery is reduced when the battery is just powered on, the impact on the whole circuit is reduced, devices in the circuit are protected from being damaged, and the reliability is improved.
According to some embodiments of the present invention, the pre-charge module includes a capacitor charge control unit and a voltage transformation unit, and the capacitor charge control unit is connected to the input terminal of the capacitor module through the voltage transformation unit.
According to some embodiments of the present invention, the pre-charge module further comprises an indication unit, and the capacitance charging control unit is connected with the indication unit.
According to some embodiments of the utility model, further comprising a control module coupled to the pre-charge module.
According to some embodiments of the utility model, the power supply further comprises a first switch module, the first switch module is connected with the input end of the capacitor module, the first switch module can be connected with an external battery, and the control module is connected with the first switch module.
According to some embodiments of the utility model, the controller further comprises a second switch module, the precharge module is connected to the capacitor module through the second switch module, and the control module is connected to the second switch module.
According to some embodiments of the utility model, the system further comprises a detection module connected with the load module and/or the capacitance module and/or the pre-charge module, and the control module is connected with the detection module.
According to some embodiments of the utility model, the load module comprises at least one load unit comprising a switching tube assembly and at least one load, the control module is connected with a control end of the switching tube assembly, the switching tube assembly is connected in series with the load, and the load unit is connected with the capacitance module.
According to some embodiments of the utility model, the load units are at least two, and the load units are connected in parallel.
The hydrogen fuel cell load testing system comprises the cell testing circuit and a hydrogen fuel cell, wherein the hydrogen fuel cell is connected with the capacitor module.
The hydrogen fuel cell load testing system provided by the embodiment of the utility model has at least the following beneficial effects: when the hydrogen fuel cell is tested, the capacitor module is charged through the pre-charging module to improve the voltage and the energy storage of the capacitor, and then the hydrogen fuel cell is connected, so that the hydrogen fuel cell outputs electric energy through the capacitor module to drive the load module to work, and therefore the current output by the hydrogen fuel cell when the hydrogen fuel cell is connected can be reduced, the circuit is prevented from being impacted by overlarge current, the damage probability of each device in the circuit is reduced, and the reliability is improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of one embodiment of the present invention;
FIG. 2 is a circuit diagram of a pre-charge module according to one embodiment of the present invention;
FIG. 3 is a circuit diagram of a circuit module according to one embodiment of the present invention;
FIG. 4 is a circuit diagram of a load module according to one embodiment of the present invention;
FIG. 5 is a circuit diagram of a control module and a detection module according to an embodiment of the utility model.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
As shown in fig. 1 to 4, a battery test circuit according to an embodiment of the present invention includes: a load module 100; the output end of the capacitor module 200 is connected with the load module 100, and the input end of the capacitor module 200 can be connected with an external battery; and the pre-charging module 300, the pre-charging module 300 is connected with the input end of the capacitor module 200, and the pre-charging module 300 can charge the capacitor module 200.
Through being provided with pre-charge module 300, before testing the battery, carry out pre-charge processing to capacitor module 200 through earlier with the circular telegram module, improve capacitor module 200's voltage, then test the battery again, be favorable to reducing the size of battery output current when just circular telegram, reduce the impact that causes whole circuit, device among the protection circuit avoids damaging, improves the reliability.
The capacitance module 200 may be an embodiment including a plurality of capacitors connected in parallel or in series-parallel.
Referring to fig. 2, in some embodiments of the present invention, the pre-charge module 300 includes a capacitance charge control unit 310 and a transformation unit 320, and the capacitance charge control unit 310 is connected to the input terminal of the capacitance module 200 through the transformation unit 320.
The capacitor charging control unit 310 outputs a charging signal suitable for charging the capacitor module 200, and the transforming unit 320 transforms the charging signal, so as to improve the charging efficiency of the capacitor module 200 and shorten the charging time.
The capacitive charging control unit 310 may be a commonly used capacitive charging controller, capacitive charging control chip, or the like. The transforming unit 320 may be an implementation of a device or circuit such as a transformer, a boosting circuit, etc.
Referring to fig. 2, in some embodiments of the present invention, the pre-charging module 300 further includes an indication unit 330, and the capacitor charging control unit 310 is connected to the indication unit 330.
By providing the indication unit 330 to connect with the capacitive charging control unit 310, the pre-charging module 300 can prompt the user of the current working status through the indication unit 330, for example: the power-on state, the charging completion and the like are favorable for more convenient use.
Referring to FIG. 5, in some embodiments of the present invention, a control module 400 is further included, the control module 400 being coupled to the pre-charge module 300.
By providing the control module 400, the control module 400 can control the working state of the pre-charge module 300, so as to automatically pre-charge the capacitor module 200, thereby facilitating the use.
The control module 400 may be a PLC (programmable logic device), a single chip, or an embedded system, which can receive, process, and output signals.
Referring to fig. 3, in some embodiments of the present invention, a first switch module 500 is further included, the first switch module 500 is connected to an input terminal of the capacitor module 200, the first switch module 500 is capable of being connected to an external battery, and the control module 400 is connected to the first switch module 500.
The external battery is connected to the input terminal of the capacitor module 200 through the first switch module 500, and the control module 400 can control the first switch module 500 to be turned on or off, so as to control whether the external battery is connected to the capacitor module 200, thereby achieving the effect of controlling the start or stop of the battery test.
The first switching module 500 may be an embodiment including a relay having contacts connected to the battery and the capacitor module 200, respectively, and a coil connected to the control module 400.
Referring to fig. 2, in some embodiments of the present invention, a second switch module 600 is further included, the pre-charge module 300 is connected to the capacitor module 200 through the second switch module 600, and the control module 400 is connected to the second switch module 600.
The control module 400 can control the second module to be turned on or off, and then control whether the pre-charging module 300 is connected to the capacitor module 200, so that the pre-charging module 300 can be turned off from the capacitor module 200 after the pre-charging is completed, and the pre-charging module 300 is prevented from affecting the subsequent battery testing process.
The second switch module 600 may be an embodiment including a relay having contacts connected to the pre-charge module 300 and the capacitor module 200, respectively, and a coil connected to the control module 400.
When the battery test is performed, the control module 400 controls the first switch module 500 to be opened and the second switch module 600 to be closed, so that the pre-charging module 300 and the capacitor module 200 are pre-charged, and after the pre-charging is completed, the control module 400 controls the second switch module 600 to be opened and the first switch module 500 to be closed, so that the battery outputs electric energy through the capacitor module 200 to drive the load module 100 to operate.
Referring to fig. 3 and 5, in some embodiments of the utility model, the detection module 700 is further included, the detection module 700 is coupled to the load module 100 and/or the capacitance module 200 and/or the pre-charge module 300, and the control module 400 is coupled to the detection module 700.
The detection module 700 detects the voltage and current of the load module 100, the capacitor module 200 and the pre-charging module 300, so as to obtain the working condition of the circuit, and detect and obtain various parameters of the battery in the process that the battery drives the load module 100 to work, thereby achieving the purpose of testing.
The detection module 700 may be a device capable of detecting voltage and current, including a current transformer, a voltage transformer, and the like; the detection module 700 may also include embodiments of a polling instrument to facilitate data collection and display.
Referring to fig. 4, in some embodiments of the present invention, the load module 100 includes at least one load unit 110, the load unit 110 includes a switching tube assembly 111 and at least one load member 112, the control module 400 is connected to a control terminal of the switching tube assembly 111, the switching tube assembly 111 is connected in series with the load member 112, and the load unit 110 is connected to the capacitor module 200.
The control module 400 controls the switching tube assembly 111 to control the current flowing through the load member 112, so as to control the load power of the battery, thereby facilitating the test, and the load unit 110 has a simple structure and is convenient to implement.
The switching tube assembly 111 is connected in series with the load element 112, which means that the load element 112 is connected to an input or output of the switching tube assembly 111. The switching tube assembly 111 may be an embodiment including an IGBT, a MOS tube, and the like.
As a preferred embodiment, the switching tube assembly 111 includes a first switching tube and a second switching tube, the load unit 110 includes two load units 112, one of the load units 112 has one end connected to the first output end of the capacitor module 200 and the other end connected to the input end of the first switching tube, the other load unit 112 has one end connected to the second output end of the capacitor module 200 and the other end connected to the output end of the second switching tube, the output end of the first switching tube is connected to the input end of the second switching tube and grounded, and the control module 400 is connected to the control end of the first switching tube and the control end of the second switching tube respectively. Under the condition that the first output end of the capacitor module 200 outputs positive voltage and the second output end of the capacitor module 200 outputs negative voltage, the output end of the first switch tube is connected with the input end of the second switch tube and then grounded, so that when the first switch tube is switched on and the second switch tube is switched off, a loop is formed between the positive voltage and the first switch tube and the ground, the second switch tube cannot bear all voltage differences between the positive voltage and the negative voltage, and the effect of the magnitude of the voltage applied to the second switch tube is reduced. Therefore, when the first switch tube and the second switch tube are both switched on or switched off, the current flowing through the first switch tube and the second switch tube is the same as that flowing through the traditional structure, when one of the first switch tube and the second switch tube is switched off and the other switch tube is switched on, the probability that the first switch tube and the second switch tube are damaged is favorably reduced, and the reliability is improved.
In case the control module 400 cannot directly drive the switching tube assembly, a driving unit may be provided, through which the control module 400 is connected with the switching tube assembly 111. The driving unit may be a driver or a driving circuit, etc. commonly used in the switching tube.
Referring to fig. 4, in some embodiments of the present invention, there are at least two load units 110, and the load units 110 are connected in parallel.
Through being provided with a plurality of load units 110, control module 400 can be through the on-off state of controlling switch tube subassembly 111 among different load units 110 to control load total flow size, and then the load power of more nimble control battery makes the test can simulate different load conditions, makes the test more convenient.
The hydrogen fuel cell load test system according to the second embodiment of the present invention includes the above-mentioned cell test circuit, and further includes a hydrogen fuel cell 800, and the hydrogen fuel cell 800 is connected to the capacitor module 200.
When the hydrogen fuel cell 800 is tested, the capacitor module 200 is charged through the pre-charge module 300 to improve the voltage and the stored energy of the capacitor, and then the hydrogen fuel cell 800 is connected, so that the hydrogen fuel cell 800 outputs electric energy through the capacitor module 200 to drive the load module 100 to work, and therefore the current output by the hydrogen fuel cell 800 when the hydrogen fuel cell 800 is connected can be reduced, the excessive current is prevented from impacting the circuit too much, the probability of damage to devices in the circuit is reduced, and the reliability is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The utility model is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. A battery test circuit, comprising:
a load module (100);
a capacitor module (200), wherein the output end of the capacitor module (200) is connected with the load module (100), and the input end of the capacitor module (200) can be connected with an external battery;
the pre-charge module (300), the pre-charge module (300) is connected with the input end of the capacitor module (200), and the pre-charge module (300) can charge the capacitor module (200).
2. The battery test circuit of claim 1, wherein: the pre-charging module (300) comprises a capacitance charging control unit (310) and a transformation unit (320), wherein the capacitance charging control unit (310) is connected with the input end of the capacitance module (200) through the transformation unit (320).
3. The battery test circuit of claim 2, wherein: the pre-charging module (300) further comprises an indicating unit (330), and the capacitance charging control unit (310) is connected with the indicating unit (330).
4. The battery test circuit of claim 1, wherein: the device also comprises a control module (400), wherein the control module (400) is connected with the pre-charging module (300).
5. The battery test circuit of claim 4, wherein: the battery pack further comprises a first switch module (500), the first switch module (500) is connected with the input end of the capacitor module (200), the first switch module (500) can be connected with an external battery, and the control module (400) is connected with the first switch module (500).
6. The battery test circuit of claim 4, wherein: the capacitor module further comprises a second switch module (600), the pre-charge module (300) is connected with the capacitor module (200) through the second switch module (600), and the control module (400) is connected with the second switch module (600).
7. The battery test circuit of claim 4, wherein: the detection module (700) is further included, the detection module (700) is connected with the load module (100) and/or the capacitance module (200) and/or the pre-charge module (300), and the control module (400) is connected with the detection module (700).
8. The battery test circuit of claim 4, wherein: the load module (100) comprises at least one load unit (110), the load unit (110) comprises a switch tube assembly (111) and at least one load piece (112), the control module (400) is connected with a control end of the switch tube assembly (111), the switch tube assembly (111) is connected with the load piece (112) in series, and the load unit (110) is connected with the capacitance module (200).
9. The battery test circuit of claim 8, wherein: the number of the load units (110) is at least two, and the load units (110) are connected in parallel.
10. The hydrogen fuel cell load test system is characterized in that: comprising the battery test circuit according to any of the claims 1 to 9, further comprising a hydrogen fuel cell (800), said hydrogen fuel cell (800) being connected to said capacitor module (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120472048.8U CN215340223U (en) | 2021-03-03 | 2021-03-03 | Battery test circuit and hydrogen fuel cell load test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120472048.8U CN215340223U (en) | 2021-03-03 | 2021-03-03 | Battery test circuit and hydrogen fuel cell load test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215340223U true CN215340223U (en) | 2021-12-28 |
Family
ID=79582862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120472048.8U Active CN215340223U (en) | 2021-03-03 | 2021-03-03 | Battery test circuit and hydrogen fuel cell load test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215340223U (en) |
-
2021
- 2021-03-03 CN CN202120472048.8U patent/CN215340223U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107554335B (en) | Vehicle-mounted power system and automobile | |
| EP2523248B1 (en) | Battery control device and method | |
| CN101867204B (en) | Battery energy management device of electric vehicle and method | |
| CN102009595A (en) | Device and method for managing energy of lithium batteries of electric vehicles | |
| CN203445668U (en) | Distributed battery management system | |
| CN101174711A (en) | Battery management system and driving method thereof | |
| CN101958574A (en) | Vehicular DC power supply device | |
| CN109358548A (en) | A kind of charging method of automotive diagnostic system, vehicle diagnosis and automotive diagnostic unit | |
| CN102315492A (en) | Power battery pack maintenance device and working method thereof | |
| CN216389527U (en) | Battery heating system, battery pack and electric device | |
| CN112158106B (en) | Charging control circuit of electric automobile with double battery systems and control method thereof | |
| CN112165156A (en) | Charging/discharging device, battery system, charging/discharging control method, and storage medium | |
| CN111483350A (en) | Balance and micro-short circuit detection method for power battery pack | |
| CN110266066B (en) | Charging control device and charging control method for parallel connection of multiple lithium battery packs | |
| CN106655301A (en) | Power management system and method suitable for electric fork-lift truck | |
| CN215340223U (en) | Battery test circuit and hydrogen fuel cell load test system | |
| CN117318214A (en) | Battery pack high-voltage system and control method thereof | |
| CN202535095U (en) | A battery management system | |
| CN108448184A (en) | A kind of energy-saving management system based on fuel cell | |
| KR102644606B1 (en) | Charging method and power conversion device | |
| CN210337645U (en) | Electric automobile battery integrated management system | |
| CN208571695U (en) | Power supply circuit, the vehicle-carried mobile payment devices of vehicle-carried mobile payment devices | |
| CN201839039U (en) | Photovoltaic charge-discharge control device with free capacity expansion | |
| CN201118271Y (en) | Vehicle mounted accumulator system suitable for automobile with dynamic batteries | |
| CN214590746U (en) | Vehicle-mounted auxiliary battery charging controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |