CN218567442U - Voltage monitoring device for battery test - Google Patents
Voltage monitoring device for battery test Download PDFInfo
- Publication number
- CN218567442U CN218567442U CN202222036044.2U CN202222036044U CN218567442U CN 218567442 U CN218567442 U CN 218567442U CN 202222036044 U CN202222036044 U CN 202222036044U CN 218567442 U CN218567442 U CN 218567442U
- Authority
- CN
- China
- Prior art keywords
- voltage
- switch
- battery
- monitor
- voltage monitor
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 16
- 230000002159 abnormal effect Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Secondary Cells (AREA)
Abstract
The application relates to the technical field of electronics, and provides a voltage monitoring device for battery testing. The power swapping station comprises: the device comprises a battery simulator, a battery pack, a first on-off switch, a second on-off switch and a voltage monitor; the first on-off switch is arranged at the positive electrode of the high-voltage direct-current bus between the battery simulator and the battery pack, and the second on-off switch is arranged at the negative electrode of the high-voltage direct-current bus between the battery simulator and the battery pack; the input end of the voltage monitor is connected with the high-voltage direct-current bus, and the output end of the voltage monitor is connected with the first on-off switch and the second on-off switch. The voltage monitoring device for battery testing provided by the embodiment of the application can improve the safety of battery testing.
Description
Technical Field
The application relates to the technical field of electronics, in particular to a voltage monitoring device for battery testing.
Background
At present, in the process of testing a battery pack through a battery simulator, in order to improve the safety of the test, a voltage monitor is generally used to monitor the state of the battery pack, and when the voltage monitor detects that the voltage input into the battery pack is abnormal, a level signal is sent to the battery simulator, so as to stop the experiment through a program set in advance in the battery simulator. However, in the related art, the termination of the battery pack test depends on a test termination program set by the battery simulator, and if the battery simulator fails, the protection fails, so that potential safety hazards such as overcharge and overdischarge of the battery pack may occur in the test process.
Disclosure of Invention
The present application is directed to solving at least one of the technical problems occurring in the related art. Therefore, the application provides a voltage monitoring device for battery testing, which can improve the safety of the battery testing.
The voltage monitoring device for battery test according to the embodiment of the first aspect of the application comprises:
the device comprises a battery simulator, a battery pack, a first on-off switch, a second on-off switch and a voltage monitor;
the first on-off switch is arranged at the positive electrode of the high-voltage direct-current bus between the battery simulator and the battery pack, and the second on-off switch is arranged at the negative electrode of the high-voltage direct-current bus between the battery simulator and the battery pack;
the input end of the voltage monitor is connected with the high-voltage direct-current bus, and the output end of the voltage monitor is connected with the first on-off switch and the second on-off switch.
The voltage monitoring device for battery testing provided by the embodiment of the application comprises a battery simulator, a battery pack, a voltage monitor, a voltage monitoring device and a power supply, wherein the battery simulator is connected with the battery pack through a high-voltage direct-current bus, the voltage monitoring device is connected with the two on-off switches through a positive pole and a negative pole of the high-voltage direct-current bus, the voltage monitoring device is connected with the two on-off switches through a voltage monitor, the two on-off switches are disconnected through level signals sent by the voltage monitor when the test is abnormal, the current loop is cut off, the test is stopped, even if a certain on-off switch is adhered, the other on-off switch is disconnected, the situation that overcharge and overdischarge occur is avoided, and the safety of the battery test is improved.
According to one embodiment of the application, the device further comprises an alarm for monitoring the voltage monitor;
the alarm is in communication connection with the voltage monitor.
According to one embodiment of the application, the alarm comprises a light emitting assembly.
According to an embodiment of the present application, further comprising a switching circuit;
the switch circuit is connected with the input end of the voltage monitor and is used for being connected with a power supply to supply power to the voltage monitor;
and the output end of the alarm is connected with the switch circuit.
According to one embodiment of the application, the switching circuit comprises an AC/DC converter.
According to an embodiment of the application, the output of the voltage monitor is connected to the battery simulator.
According to one embodiment of the present application, the voltage monitor includes a voltage sampling unit and a controller;
the input end of the voltage sampling unit is connected with the positive electrode of the high-voltage direct-current bus and the negative electrode of the high-voltage direct-current bus, and the output end of the voltage sampling unit is connected with the input end of the controller;
and the output end of the controller is connected with the first on-off switch and the second on-off switch.
According to one embodiment of the present application, at least one of the first on-off switch and the second on-off switch includes a relay.
According to an embodiment of the application, the battery comprises a plurality of batteries, and each battery is connected to the high-voltage direct-current bus in series.
According to one embodiment of the application, the terminal equipment further comprises a communication module in communication connection with the terminal equipment;
the communication module is connected with the output end of the voltage monitor.
One or more technical solutions in the embodiments of the present application have at least one of the following technical effects:
through the positive pole and the negative pole of the high voltage direct current bus between battery simulator and battery package all insert an on-off switch, and utilize the mode that voltage monitor inserts high voltage direct current bus and two on-off switches, come two on-off switches of level signal disconnection that the voltage monitor sent when the test is unusual, thereby cut off the electric current return circuit and suspend the test, make the test that battery simulator set for suspend the procedure when unusual, even adhesion appears in certain on-off switch, also accessible another on-off switch off circuit, avoid appearing the condition of overcharging, improve the security of battery test.
Drawings
In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a voltage monitoring apparatus for battery testing according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a voltage monitoring apparatus for battery testing according to another embodiment of the present application;
FIG. 3 is a schematic structural diagram of a voltage monitoring apparatus for battery testing according to yet another embodiment of the present application;
fig. 4 is a schematic structural diagram of a voltage monitoring apparatus for battery testing according to yet another embodiment of the present application.
Detailed Description
To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The voltage monitoring device for battery test provided in the embodiments of the present application will be described and explained in detail with several specific embodiments.
In one embodiment, a voltage monitoring apparatus for battery testing is provided. As shown in fig. 1, the voltage monitoring apparatus for battery test provided in this embodiment includes:
the device comprises a battery simulator 1, a battery pack 2, a first on-off switch 3, a second on-off switch 4 and a voltage monitor 5;
the first on-off switch 3 is arranged at the positive electrode of a high-voltage direct-current bus between the battery simulator 1 and the battery pack 2, and the second on-off switch 4 is arranged at the negative electrode of the high-voltage direct-current bus between the battery simulator 1 and the battery pack 2;
the input end of the voltage monitor 5 is connected with the high-voltage direct-current bus, and the output end of the voltage monitor 5 is connected with the first on-off switch 3 and the second on-off switch 4.
In an embodiment, the battery simulator 1 is an instrument for charging and discharging a battery, and a first end of the battery simulator 1 is connected with a first end of the battery pack 2 through a high voltage direct current bus to form a positive electrode of the high voltage direct current bus. And a first on-off switch 3 is arranged on a high-voltage direct-current bus connected with the first end of the battery simulator 1 and the first end of the battery pack 2. The second end of the battery simulator 1 is connected with the second end of the battery pack 2 through a high-voltage direct-current bus to form a negative electrode of the high-voltage direct-current bus. And a second on-off switch 4 is arranged on a high-voltage direct-current bus connected between the second end of the battery simulator 1 and the second end of the battery pack 2. In this way, a high voltage loop is formed between the battery simulator 1 and the battery pack 2, so that the battery pack 2 can be subjected to charge and discharge tests using the battery simulator 1.
In one embodiment, the voltage monitor 5 is connected to two sides of the first on-off switch 3 and two sides of the second on-off switch 4 through sampling harnesses, so as to sample the voltage of the positive electrode and the negative electrode of the high-voltage direct-current bus. The input end of the voltage monitor 5 is connected with the first on-off switch 3 and the second on-off switch 4 through a control wire harness.
When the battery pack 2 is tested through the battery simulator 1, the first on-off switch 3 and the second on-off switch 4 are closed, and the battery test is started. In the battery test process, the voltage monitor 5 is connected to a high-voltage loop formed by the battery simulator 1 and the battery pack 2 through the sampling linear speed, so that the voltage monitor 5 can monitor whether the sampling voltage between the battery simulator 1 and the battery pack 2 is abnormal or not. If the abnormal condition exists, the voltage monitor 5 can generate a level signal, the level signal is output to the first on-off switch 3 and the second on-off switch 4 through the output end, the first on-off switch 3 and the second on-off switch 4 are switched off, and therefore the high-voltage loop is cut off to stop the test. For example, the voltage monitor 5 may include an or gate circuit with a threshold value, and two input terminals of the or gate circuit are respectively connected to two sides of the first on-off switch 3 and two sides of the second on-off switch 4 to obtain the positive voltage and the negative voltage of the dc bus. The output end of the OR gate circuit is connected with a first on-off switch 3 and a second on-off switch 4. If a certain voltage reaches a threshold value, the OR gate circuit generates a level signal, and the level signal is output to the first on-off switch 3 and the second on-off switch 4 through the output end, so that the first on-off switch 3 and the second on-off switch 4 are switched off.
Alternatively, in one embodiment, the voltage monitor 5 may include a voltage sampling unit, which may be a voltage measuring instrument, such as a high voltage electroscope, and a controller. The input end of the voltage sampling unit is connected to the two sides of the first on-off switch 3 and the two sides of the second on-off switch 4 and is used for measuring the voltages of the positive pole and the negative pole of the high-voltage direct-current bus. The output end of the voltage sampling unit is connected with the input end of the controller and used for sending the measured sampling voltage to the controller, so that a signal generator in the controller generates a level signal according to the abnormal sampling voltage. The controller can be an or gate circuit with a threshold value, and two input ends of the or gate circuit respectively receive two paths of voltages output by the voltage sampling unit. The output end of the OR gate circuit is connected with a first on-off switch 3 and a second on-off switch 4. If a certain voltage reaches a threshold value, the OR gate circuit generates a level signal, the level signal is output to the first on-off switch 3 and the second on-off switch 4 through the output end, the first on-off switch 3 and the second on-off switch 4 are disconnected, and a high-voltage loop between the battery simulator 1 and the battery pack 2 is cut off.
Since the first on-off switch 3 or the second on-off switch 4 may be stuck due to a high temperature, when the high-voltage circuit needs to be cut off, a certain switch may not be cut off due to sticking. Therefore, the positive electrode and the negative electrode of the high-voltage loop are connected with one on-off switch, so that even if a certain on-off switch is adhered at high temperature, the loop can be disconnected by the other on-off switch, and the safety of battery testing is improved.
Through all insert an on-off switch at the positive pole of the high voltage direct current generating line between battery simulator and battery package and negative pole, and utilize the mode that voltage monitor inserts high voltage direct current generating line and two on-off switches, come the two on-off switches of level signal disconnection that utilize voltage monitor to send when the test is unusual, thereby cut off the electric current return circuit and suspend the test, make the test that battery simulator set for suspend the procedure when unusual, even adhesion appears in certain on-off switch, also accessible another on-off switch off circuit, avoid appearing the circumstances of overcharge overdischarge, improve the security of battery test.
In an embodiment, the first on-off switch 3 and the second on-off switch 4 may be relays, and at this time, the first on-off switch 3 and the second on-off switch 4 may directly receive the sampling voltage collected by the voltage monitor 5 by the relays to determine whether the current loop needs to be cut off, and the voltage monitor 5 does not need to generate a level signal.
To further improve the safety of the battery test, in one embodiment, as shown in fig. 2, an alarm 6 for monitoring the voltage monitor 5 is further included;
the alarm 6 is in communication connection with the voltage monitor 5.
In one embodiment, the voltage monitor 5 is connected to the alarm 6 in communication, so that it can determine whether the voltage monitor 5 is still in operation by receiving a heartbeat signal or a level signal sent by the voltage monitor 5. The alarm 6 may be an alarm with a time threshold, and at this time, if a heartbeat signal or a level signal is not received within the time threshold, it indicates that the voltage monitor is abnormal, and at this time, the alarm 6 is triggered to alarm.
The alarm 6 triggers an alarm by setting a time threshold value, which is a conventional function of the alarm and is not described herein.
In one embodiment, the alarm 6 may include a light emitting component, such as a LED light set, for flashing when an alarm is triggered to indicate an abnormality in the voltage monitor 5. Alternatively, the alarm circuit 5 may include a buzzer for giving a vibration prompt when receiving the level signal to prompt the voltage monitor 5 to be abnormal. Alternatively, the alarm circuit 5 may further include an audible and visual alarm or the like.
Through setting up the alarm that is used for monitoring voltage monitor to with this alarm and voltage monitor communication connection, thereby when voltage monitor work is unusual, can report to the police through the alarm, further improve the security of battery test.
In one embodiment, as shown in fig. 3, a switch circuit 7 is further included;
the switch circuit 7 is connected with the input end of the voltage monitor 5 and is used for connecting a power supply to supply power to the voltage monitor 5;
the output end of the alarm 6 is connected with the switch circuit 7.
In one embodiment, the input terminal of the switch circuit 7 is connected to the input terminal of the voltage monitor 5, so that the voltage monitor 5 can be turned off by the switch circuit 7 after the voltage monitor 5 is abnormal or the high voltage loop between the battery simulator 1 and the battery pack 2 is broken.
The input end of the switch circuit 7 is also connected with the output end of the alarm 6. When the voltage monitor 5 is detected to be abnormal, the alarm 6 generates a level signal and transmits the level signal to the switch circuit 7, so that the switch circuit 7 is controlled to be switched off, and the voltage monitor 5 can be automatically powered off when the voltage monitor 5 is abnormal.
In one embodiment, to ensure the safety of the circuit, the switching circuit 7 includes an AC/DC converter for converting 220V AC power into 24V low voltage DC power to be transmitted to the voltage monitor 5, so that the voltage monitor 5 can control the on/off of the first on/off switch 3 and the second on/off switch 4 by using the 24V low voltage AC power.
To further improve the safety of the battery test, in one embodiment, as shown in fig. 4, the output of the voltage monitor 5 is connected to the battery simulator 1.
In one embodiment, the output terminal of the voltage monitor 5 is also connected to the battery simulator 1 by communication line speed, or the voltage monitor 5 may be connected to the communication module mounted on the battery simulator 1 by wireless communication using the communication module mounted on the voltage monitor 5 as the output terminal, so that the level signal generated by the voltage monitor 5 is transmitted to the battery simulator 1, and the battery simulator 1 may terminate the experiment by a program set in advance based on the level signal.
The output end of the voltage monitor is connected with the first on-off switch, the second on-off switch and the battery simulator, so that when the voltage monitor generates a level signal, the battery simulator can stop testing while the first on-off switch and the second on-off switch are disconnected, multiple insurance is formed, over-charging or over-discharging of a battery can be avoided when any one of the first on-off switch, the second on-off switch or the battery simulator breaks down, and the safety of battery testing is further improved.
In one embodiment, the battery pack 2 generally includes a plurality of batteries. Each battery is connected in series to the high-voltage direct-current bus, so that when the first on-off switch 3 and the second on-off switch 4 are turned off, the test process of all batteries in the battery pack can be stopped simultaneously.
In one embodiment, as shown in fig. 4, the battery pack further includes a communication module 8 communicatively connected to the terminal device, the communication module 8 is connected to the output end of the voltage monitor 5, and generates a prompt message to be sent to the terminal device when receiving the level signal, so as to prompt that the current loop between the battery simulator and the battery pack is abnormal.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A voltage monitoring apparatus for battery testing, comprising:
the device comprises a battery simulator, a battery pack, a first on-off switch, a second on-off switch and a voltage monitor;
the first on-off switch is arranged at the positive electrode of a high-voltage direct-current bus between the battery simulator and the battery pack, and the second on-off switch is arranged at the negative electrode of the high-voltage direct-current bus between the battery simulator and the battery pack;
the input end of the voltage monitor is connected with the high-voltage direct-current bus, and the output end of the voltage monitor is connected with the first on-off switch and the second on-off switch.
2. The voltage monitoring apparatus for battery testing of claim 1, further comprising an alarm for monitoring the voltage monitor;
the alarm is in communication connection with the voltage monitor.
3. The voltage monitoring apparatus for battery testing of claim 2, wherein the alarm comprises a light emitting assembly.
4. The voltage monitoring apparatus for battery testing of claim 2, further comprising a switching circuit;
the switch circuit is connected with the input end of the voltage monitor and is used for being connected with a power supply to supply power to the voltage monitor;
and the output end of the alarm is connected with the switch circuit.
5. The voltage monitoring apparatus for battery testing of claim 4, wherein the switching circuit comprises an AC/DC converter.
6. The voltage monitoring apparatus for battery testing according to any one of claims 1-5, wherein the output of the voltage monitor is connected to the battery simulator.
7. The voltage monitoring apparatus for battery testing of any one of claims 1-5, wherein the voltage monitor comprises a voltage sampling unit and a controller;
the input end of the voltage sampling unit is connected with the positive electrode of the high-voltage direct current bus and the negative electrode of the high-voltage direct current bus, and the output end of the voltage sampling unit is connected with the input end of the controller;
and the output end of the controller is connected with the first on-off switch and the second on-off switch.
8. The voltage monitoring apparatus for battery testing of any of claims 1-5, wherein at least one of the first on-off switch and the second on-off switch comprises a relay.
9. The voltage monitoring device for battery testing according to any one of claims 1-5, wherein the battery comprises a plurality of batteries, each of the batteries being connected in series to the high voltage DC bus.
10. The voltage monitoring apparatus for battery test according to any one of claims 1-5, further comprising a communication module communicatively connected to the terminal device;
the communication module is connected with the output end of the voltage monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222036044.2U CN218567442U (en) | 2022-08-03 | 2022-08-03 | Voltage monitoring device for battery test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222036044.2U CN218567442U (en) | 2022-08-03 | 2022-08-03 | Voltage monitoring device for battery test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218567442U true CN218567442U (en) | 2023-03-03 |
Family
ID=85306354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222036044.2U Active CN218567442U (en) | 2022-08-03 | 2022-08-03 | Voltage monitoring device for battery test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218567442U (en) |
-
2022
- 2022-08-03 CN CN202222036044.2U patent/CN218567442U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106494254B (en) | A kind of power battery charging Protection control system, method and device | |
| KR20140051847A (en) | High voltage battery system for vehicle applications | |
| WO2014156150A1 (en) | Electric power unit for vehicle | |
| CN103311965A (en) | Intelligent management device and method of charging and discharging of parallel-connected battery group | |
| CN109823285A (en) | Electric system, power-on and power-off control method and control system above and below electric automobile high-voltage | |
| CN105122577A (en) | Overcurrent detection device, charging/discharging system using said overcurrent detection device, distribution board, charging control device, vehicle charging/discharging device, and vehicle electrical apparatus | |
| CN103430035A (en) | Charging apparatus and method for determining conduction state | |
| EP3065255A1 (en) | Power conversion system and connector | |
| CN107399287B (en) | Vehicle power system for boost start | |
| CN104838536A (en) | Battery management system and battery system | |
| CN109613348A (en) | A kind of high-voltaghe compartment tooling automatic detection device | |
| US20140042936A1 (en) | Battery Module, Battery Management System, System for Supplying a Drive of a Machine Suitable for Generating Torque with Electrical Energy, and a Motor Vehicle | |
| CN108832686B (en) | Charging circuit and charging circuit detection method | |
| US7573239B2 (en) | Circuit for monitoring batteries in a parallel configuration while under load | |
| US10886578B2 (en) | Battery management device | |
| CN114248626B (en) | Vehicle high-voltage discharge control method and device and vehicle | |
| US10629964B2 (en) | Method for operating an energy storage unit, battery management system for performing such a method and energy storage unit with such a battery management system | |
| CN218567442U (en) | Voltage monitoring device for battery test | |
| CN109586368B (en) | Energy storage system starting device, starting method and energy storage system | |
| CN218331700U (en) | Protection circuit for battery test | |
| CN218299187U (en) | Alarm device and power supply with same | |
| KR20180077530A (en) | Power supply device for electric vehicle charging adapter and charging adapter using the same | |
| CN102282736A (en) | Switch control circuit for power supply and power supplying circuit | |
| CN211684756U (en) | High-voltage power distribution system of electric vehicle and electric vehicle | |
| WO2019193637A1 (en) | Battery device and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |