CN211478575U - Battery pack testing device and equipment - Google Patents
Battery pack testing device and equipment Download PDFInfo
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- CN211478575U CN211478575U CN201921995557.8U CN201921995557U CN211478575U CN 211478575 U CN211478575 U CN 211478575U CN 201921995557 U CN201921995557 U CN 201921995557U CN 211478575 U CN211478575 U CN 211478575U
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Abstract
The application discloses battery package testing arrangement and equipment connects temperature sensor through setting up first plug connector to establish ties temperature sensor in the battery package and first instruction module and detect temperature sensor's state. Specifically, the device comprises a first plug connector and a plurality of first indicating modules for sending out indicating information when the device is powered on; the first plug connector comprises a first connecting contact and a plurality of second connecting contacts, the first connecting contact is used for connecting a first voltage end, the second connecting contact is connected with a first connecting end of the first indicating module, a second connecting end of the first indicating module is used for connecting a second voltage end, and when two ends of a temperature sensor are respectively connected to the first connecting contact and the second connecting contact, the temperature sensor is electrically communicated with the first indicating module; the polarity of the first voltage end is opposite to that of the second voltage end. The scheme can shorten the turnover time in the production process of the battery pack and improve the production efficiency.
Description
Technical Field
The application relates to the technical field of battery monitoring, in particular to a battery pack testing device and equipment.
Background
When the battery pack is used, the battery core of the battery pack can generate heat, so that the temperature of the battery pack is increased and even abnormal. In order to monitor the temperature condition in the battery pack and the fault condition of the battery core, some temperature sensors, monitoring boards and the like are usually arranged in the battery pack, so that the condition of the battery pack is judged according to the temperature collected by the temperature sensors and the on-off condition of conductors on the monitoring boards. That is to say, in the battery package that assembles, be provided with the temperature sensor who is arranged in monitoring module battery core temperature and be used for monitoring whether the control board that electric core broke down.
In order to ensure the quality of the battery pack, the battery pack is generally tested. In the method for testing the battery pack, after the battery pack is assembled in an assembly line, the assembled battery system is subjected to functional test so as to test the temperature sensor, and then the battery system with abnormal test is sent to a general assembly line again for maintenance, so that the production turnaround time of the battery system is overlong.
SUMMERY OF THE UTILITY MODEL
In order to overcome at least the above-mentioned deficiencies in the prior art, one of the objectives of the present application is to provide a battery pack testing apparatus, which includes a first connector and a plurality of first indicating modules for sending out indicating information to indicate the status of a temperature sensor in a battery pack when the battery pack is powered on;
the first connector comprises a first connecting contact and a plurality of second connecting contacts;
the first connecting contact is used for connecting a first voltage end, the second connecting contact is connected with a first connecting end of the first indicating module, a second connecting end of the first indicating module is used for connecting a second voltage end, and when two ends of the temperature sensor are respectively connected to the first connecting contact and the second connecting contact, the temperature sensor is electrically communicated with the first indicating module;
wherein the first voltage terminal and the second voltage terminal have opposite polarities.
Optionally, the first indicating module comprises a first LED lamp, a high potential end of the first LED lamp is connected to the second connecting contact through a first current limiting resistor, and a low potential end of the first LED lamp is used for connecting to the second voltage end.
Optionally, the first voltage end is a first test end of the digital display resistance meter head, the second voltage end is a second test end of the digital display resistance meter head, the first test end and the second test end are used for testing resistance, the device further comprises a switching module, the switching module comprises a control end, a first end and a second end, the switching module is connected with the first indication module in parallel through the first end and the second end, and when the first connection point is connected with the first test end and the second connection end of the first indication module is connected with the second test end, the control end of the switching module short-circuits the first indication module under the control of the control module so that each temperature sensor is connected between the first test end and the second test end in parallel.
Optionally, the switching module comprises an optical coupler device, the optical coupler device comprises a transmitting element for transmitting light and a receiving element for receiving light, the control end of the switching module comprises a high potential end of the transmitting element and a low potential end of the transmitting element, the high potential end of the receiving element is connected between the second connecting contact and the first indicating module, and the low potential end of the receiving element is used for connecting the second testing end;
when the first connecting point is connected with the first testing end, and the second connecting end of the first indicating module is connected with the second testing end, the high-potential end of the transmitting element and the low-potential end of the transmitting element are connected with a power supply, and then the first indicating module is short-circuited, so that each temperature sensor is connected between the first testing end and the second testing end in parallel.
Optionally, the device further comprises a digital display resistance meter head, wherein the digital display resistance meter head comprises a first power supply end, a second power supply end, a first test end and a second test end, and the first test end and the second test end are used for testing the resistance;
the first power supply end is used for being connected with a first polarity end of a power supply, and the second power supply end is used for being connected with a second polarity end of the power supply, wherein the polarities of the first polarity end and the second polarity end are opposite;
the first connecting contact point is connected with the first testing end, and the second connecting end of the first indicating module is connected with the second testing end.
Optionally, the digital display resistance meter head further includes an upper voltage difference output end and a lower voltage difference output end, the upper voltage difference output end is connected to a second polarity end of the power supply through a second indication module, and the second indication module is configured to send indication information to indicate whether a voltage difference between the first test end and the second test end is higher than a first preset voltage difference or not when the power supply is powered on;
the lower voltage difference output end is connected with the second polarity end through a third indicating module, and the third indicating module is used for sending out indicating information to indicate whether the voltage difference between the first testing end and the second testing end is lower than a second preset voltage difference or not when the power is on.
Optionally, the second indication module includes a second current limiting resistor and a second LED lamp connected in series, and the third indication module includes a third current limiting resistor and a third LED lamp connected in series.
Optionally, the apparatus further includes a second connector, where the second connector includes a third connection contact, and the third connection contact is used to connect a power supply and a first connection end of a monitoring element in the monitoring board;
the first plug connector or the second plug connector further comprises a fourth connecting contact used for being connected with the second connecting end of the monitoring element, the fourth connecting contact is connected with the second voltage end through a fourth indicating module, and the fourth indicating module is used for sending indicating information to indicate the resistance state of the monitoring element when the monitoring element is powered on.
Optionally, the fourth indicating module comprises an LED lamp and a fourth current limiting resistor, and the high potential end of the fourth indicating module is connected to the third connecting contact through the fourth current limiting resistor.
It is also an object of the present application to provide a battery pack testing apparatus comprising a housing and a battery pack testing device according to any of the present application, the battery pack testing device being disposed within the housing.
Compared with the prior art, the method has the following beneficial effects:
the battery pack testing device and the equipment provided by the embodiment of the application are characterized in that a plug connector used for connecting the temperature sensor in the battery pack is arranged, and a first indicating module capable of sending indicating information under the condition of power-on is connected to a second connecting contact of the plug connector, so that the temperature sensor is electrically communicated with the first indicating module when the temperature sensor is connected between the first connecting contact and the second connecting contact. When the two ends of the first connecting contact point and the first indicating module are connected with the power supply, the temperature sensor electrically connected between the first connecting contact point and the second connecting end of the second indicating module and the first indicating module form a passage, so that the first indicating module can send out indicating information, the temperature sensor can be tested independently, the abnormity of the temperature sensor can be detected before the function test, and the turnover time of battery pack production can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a battery pack provided in an embodiment of the present application;
fig. 2 is a first schematic connection diagram of a battery pack testing apparatus according to an embodiment of the present disclosure;
fig. 3 is a second connection schematic diagram of the battery pack testing apparatus according to the embodiment of the present application;
fig. 4 is a third schematic connection diagram of a battery pack testing apparatus according to an embodiment of the present disclosure;
fig. 5 is a fourth schematic connection diagram of a battery pack testing apparatus according to an embodiment of the present disclosure;
fig. 6 is a fifth schematic connection diagram of a battery pack testing apparatus according to an embodiment of the present disclosure;
fig. 7 is a sixth schematic connection diagram of a battery pack testing apparatus according to an embodiment of the present application;
fig. 8 is an external structural schematic diagram of a battery pack testing apparatus according to an embodiment of the present application.
Icon: 1-a monitoring board; 2-electric core; 3-a temperature sensor; 10-a first indication module; 11-a first plug-in unit; 12-a switching module; 13-a second plug connector; 14-a second indication module; 4-a wire; 20-a first voltage terminal; 21-a second voltage terminal; 30-a first polarity terminal; 31-second polarity end; 40-a housing; 41-display screen.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of 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. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In order to monitor the temperature condition in the battery pack and the fault condition of the battery core 2, some temperature sensors 3, monitoring boards 1 and the like are usually arranged in the battery pack, so that the condition of the battery pack is judged according to the temperature collected by the temperature sensors 3 and the on-off condition of conductors on the monitoring boards 1.
In order to ensure the quality of the battery pack, the battery pack is generally tested. In an embodiment of testing the temperature sensor 3 in the battery pack, after the assembly of an assembly line is completed, the assembled battery pack is subjected to a functional test through a testing process, so that the test of the temperature sensor 3 or the test of the monitoring board 1 is realized, and then the battery system with abnormal test is sent to a general assembly line again for maintenance, so that the production turnaround time of the battery system is too long.
In addition, in the battery pack, the temperature sensors 3 are distributed more frequently and may be located near the battery cells 2 inside the battery pack, so that it is also inconvenient to determine the positions of the faulty battery cells 2 during maintenance. Fig. 1 shows a schematic structural diagram of a monitoring board 1, a cell 2, and a temperature sensor 3 in a conventional cell 2.
In order to solve the above problems, an embodiment of the present invention provides a battery pack testing apparatus, please refer to fig. 2, and fig. 2 is a schematic structural diagram of the apparatus according to the present invention.
The device comprises a first plug connector 11 and a plurality of first indicating modules 10 for sending out indicating information to indicate the state of the temperature sensor 3 in the battery pack when being powered on; the first plug connector 11 comprises a first connecting point and a plurality of second connecting points, the first connecting point is used for connecting a first voltage end 20, the second connecting point is connected with a first connecting end of the first indicating module 10, a second connecting end of the first indicating module 10 is used for connecting a second voltage end 21, and when two ends of the temperature sensor 3 are respectively connected to the first connecting point and the second connecting point, the temperature sensor 3 is electrically communicated with the first indicating module 10; wherein the first voltage terminal 20 and the second voltage terminal 21 have opposite polarities.
That is, the first voltage terminal 20 and the second voltage terminal 21 are structures for providing power to the first indication module 10, and the first voltage terminal 20 may be a positive pole and a negative pole of a power supply, or a voltage terminal with a positive polarity and a voltage terminal with a negative polarity after the power supply is converted.
In the battery package of equipment, temperature sensor 3's one end electric connection is in the same place, temperature sensor 3's the other end and the one end of linking together are fixed into the structure similar to the plug through fixed knot structure, wherein, the position relatively fixed of the end of each temperature sensor 3 on the grafting structure, first plug connector 11 is the structure similar to the socket, every connecting contact (including first connecting contact and second connecting contact) corresponds with respective temperature sensor 3's tip respectively, can be convenient and fast like this with temperature sensor 3 and first plug connector 11 be connected, thereby accomplish the test.
Therefore, in this embodiment, by arranging the first connector 11 and connecting the first indication module 10 to the first connector 11, the battery pack can be tested after the assembling process, so as to avoid testing on the functional test equipment, thereby being capable of finding out the fault of the temperature sensor 3 in the battery pack in time, overhauling in time, shortening the turnaround time in the production process of the battery pack, namely, the production period. A schematic circuit diagram of the temperature sensor 3 connected to the battery pack testing apparatus is shown in fig. 3.
Referring to fig. 4, optionally, in this embodiment, the first voltage end 20 is a first test end of a digital display resistance meter head, the second voltage end 21 is a second test end of the digital display resistance meter head, the first test terminal and the second test terminal are used for testing the resistance, the apparatus further comprises a switching module 12, the switching module 12 includes a control end, a first end and a second end, the switching module 12 is connected in parallel with the first indicating module 10 through the first end and the second end, please refer to fig. 5, when the first connection point is connected to the first test end and the second connection end of the first indication module 10 is connected to the second test end, the control end of the switching module 12 short-circuits the first indicating module 10 under the control of the control module, so that each temperature sensor 3 is connected in parallel between the first testing end and the second testing end.
In this embodiment, the switching module 12 is provided, and the first indication module 10 can be short-circuited through the switching module 12, so that the temperature sensors 3 of the battery pack are connected in parallel, and the overall resistance condition of each temperature sensor 3 can be obtained.
Referring to fig. 6, optionally, in this embodiment, the switching module 12 includes an optical coupler device, the optical coupler device includes a transmitting element for transmitting light and a receiving element for receiving light, the control terminal of the switching module 12 includes a high potential terminal of the transmitting element and a low potential terminal of the transmitting element, the high potential terminal of the receiving element is connected between the second connection contact and the first indication module 10, and the low potential terminal of the receiving element is used for connecting the second test terminal.
When the first connecting point is connected with the first testing terminal, and the second connecting terminal of the first indicating module 10 is connected with the second testing terminal, the high potential terminal of the emitting element and the low potential terminal of the emitting element are conducted to emit light after being connected with a power supply, and after the receiving element receives the light emitted by the emitting element, a path is formed between the high potential terminal and the low potential terminal of the receiving element, so that the first indicating module 10 is short-circuited, and the temperature sensors 3 are connected in parallel between the first testing terminal and the second testing terminal.
In this embodiment, the optical coupler is used as the switching module 12, and the switching module has the characteristic of easy control. The optical coupling device may be an optical coupling relay, for example, an optical coupling relay with a model number of TLP 521-2. In this embodiment, adopt opto-coupler relay, can simplify circuit structure.
With reference to fig. 5 and fig. 6, in an alternative embodiment, the first indicating module 10 includes a first LED lamp D1, a high potential end of the first LED lamp D1 is connected to the second connecting contact through a first current limiting resistor R1, and a low potential end of the first LED lamp is connected to the second voltage terminal 21.
In this embodiment, the LED lamp is used as the part of the first indication module 10 that sends the indication signal, which is easy to observe and can reduce energy consumption. The first current-limiting resistor is connected with the LED lamp in series, so that the LED lamp can be prevented from being damaged by overcurrent, and the LED lamp can work normally. The temperature sensor 3, the first indicating module 10, and the switching module 12 shown in the drawings are not limited to those shown in the drawings, and when the number of the temperature sensors 3 connected into the circuit is plural, the connection of the respective temperature sensors 3, the first indicating module 10, and the switching module 12 is the same as the principle of fig. 5 in the present embodiment.
With reference to fig. 5, optionally, in this embodiment, the apparatus further includes a digital display resistance meter head, where the digital display resistance meter head includes a first power supply end, a second power supply end, a first test end (test end +), and a second test end (test end-), where the first test end and the second test end are used for testing the resistance; the first power supply terminal is used for connecting a first polarity terminal 30 of the power supply, and the second power supply terminal is used for connecting a second polarity terminal 31 of the power supply, wherein the first polarity terminal 30 and the second polarity terminal 31 have opposite polarities, for example, the first polarity terminal 30 may be a +5V output terminal of the power supply, and the second polarity terminal 31 may be a-5V output terminal of the power supply; the first connection contact point is connected to the first test end, and the second connection end of the first indication module 10 is connected to the second test end.
For the digital display resistance meter head, the display screen 41 is arranged, the resistance between the first test end and the second test end can be displayed by the display screen 41 of the digital display resistance meter head, and the digital display resistance meter head has a very visual effect. In this embodiment, the digital display resistance meter further has a third power supply terminal S1+ and a fourth power supply terminal S2+, wherein the third power supply terminal and the fourth power supply terminal are used for connecting the first polarity terminal 30 of the power supply, for example, the +5V output terminal of the power supply.
In this embodiment, a digital display resistance meter head is provided, when the first indication module 10 is short-circuited through the switching module 12, each temperature sensor 3 is connected in parallel between the first test end and the second test end, for example, when the temperature sensor 3 is 10K, the resistance values of the N temperature sensors 3 connected in parallel are 10K/N, and if the resistance value measured by the digital display resistance meter head is not within a preset range near 10K/N, it indicates that the temperature sensor 3 has a fault.
With reference to fig. 5, optionally, in this embodiment, the digital display resistor meter head further includes an upper voltage difference output terminal S1 — and a lower voltage difference output terminal S2 — the upper voltage difference output terminal is connected to a second polarity terminal 31 of the power supply, for example, the-5V output terminal of the power supply, through a second indication module 14, and the second indication module 14 is configured to send an indication message to indicate whether the voltage difference between the first test terminal and the second test terminal is higher than a first preset voltage difference when the power supply is powered on. The lower voltage difference output terminal is connected to the second polarity terminal 31, for example, a-5V output terminal of the power supply, through a third indication module, and the third indication module is configured to send an indication message to indicate whether a voltage difference between the first testing terminal and the second testing terminal is lower than a second preset voltage difference when the power supply is powered on.
The upper differential pressure output end of the digital display resistor gauge head can compare the resistance value between the first test end and the second test end with a preset first resistance value, and when the resistance value is higher than the first resistance value, a high level is output, so that the second indicating module 14 is powered on. The lower differential pressure output end of the digital display resistance meter head can compare the resistance value between the first test end and the second test end with a preset second resistance value, and when the resistance value is lower than the second resistance value, a high level is output, so that the third indicating module is electrified. In this embodiment, the temperature failure of the temperature sensor 3 can be visually observed by providing the second indication module 14 and the third indication module. The temperature sensor 3 in this embodiment is a resistance temperature sensor 3.
With reference to fig. 5 and fig. 7, optionally, in this embodiment, the second indication module 14 includes a second current limiting resistor R2 and a second LED lamp D2 connected in series, and the third indication module includes a third current limiting resistor R3 and a third LED lamp D3 connected in series.
In this embodiment, the second indication module 14 and the third indication module both use LEDs as devices for emitting indication signals, which is convenient for observation. The second current-limiting resistor and the third current-limiting resistor which are respectively connected with the first LED lamp and the second LED lamp in series are arranged, so that overcurrent damage of the first LED lamp and the second LED lamp can be prevented.
Optionally, in this embodiment, the apparatus further includes a second plug 13, where the second plug 13 includes a third connection contact, and the third connection contact is used to connect a power supply and the first connection end of the monitoring element in the monitoring board 1.
The first plug connector 11 or the second plug connector 13 further comprises a fourth connecting contact used for connecting the second connecting end of the monitoring element, the fourth connecting contact is connected with the second voltage end through a fourth indicating module, and the fourth indicating module is used for sending out indicating information to indicate the resistance state of the monitoring element when the monitoring element is powered on.
The monitoring plate 1 is made of a material that is electrically conductive and has a low melting point, for example, a metal wire 4, and the metal wire 4 may be a tin wire. After the monitoring board 1 is assembled, the wires in the monitoring board 1 are roundly arranged at the corresponding positions of the battery cores 2, when the temperature of the battery cores 2 in the battery pack is abnormally high, the wires can be fused, and the battery system monitors the state of the battery pack by using the principle so as to control the working state of the battery pack.
In this embodiment, the conductive material of the monitoring board 1, such as the metal wire 4, can be regarded as a resistor, and when the monitoring board 1 is normal, the fourth indicating module connected in series with the monitoring board 1 can normally send out an indicating signal.
With reference to fig. 5, in this embodiment, the fourth indication module optionally includes an LED lamp D4 and a fourth current limiting resistor R4, and the high potential end of the fourth indication module is connected to the third connection contact through the fourth current limiting resistor.
In this embodiment, when the switching module 12 includes the optical coupler device, a fifth current-limiting resistor R5 may be disposed at one end of the optical coupler device connected to the first polarity end, and in this embodiment, one end of the two optical couplers connected to the first polarity end may be connected to the first polarity end through the fifth current-limiting resistor.
One end of the optical coupler connected with the first polarity end can be connected with a first switch K1 and a second switch K2 to be connected with a power supply, wherein a third connecting contact of the second plug connector 13 is connected between the first switch and the second switch.
The power supply in this embodiment may be a power supply inside the battery pack testing apparatus, or an external power supply.
The digital display resistance meter head in this embodiment may be implemented by using an existing digital display resistance meter, an ohmmeter, and the like, and for example, a digital display resistance meter of a constant convergence meter, which is model RW5641, may be used.
Referring to fig. 8, another object of the present application is to provide a battery pack testing apparatus, which includes a housing 40 and a battery pack testing device according to any one of the present applications, the battery pack testing device being disposed in the housing 40.
In a specific arrangement, the first connector 11 may be disposed on the housing 40 by providing an opening on the housing 40. When the battery pack testing apparatus includes the second connector 13, it is also possible to provide the second connector on the housing 40 by providing an opening on the housing 40.
When a certain indication module includes LED lamps, the states of the LED lamps can be observed from the outside by disposing the respective LED lamps in the openings on the housing 40. For example, when 12 temperature sensors 3 are provided in the battery pack, a total of 12 LED lamps corresponding to the temperature sensors 3 (12 LEDs corresponding to serial numbers 1 to 12 in fig. 7) may be provided. Thus, it is possible to identify which temperature sensor 3 is abnormal by the display of the LED lamp, and it is possible to quickly identify the position of the abnormal LED lamp.
When the battery pack testing apparatus includes the monitoring board, the LED lamp in the fourth indicating module may also be disposed on the housing 40 by using the disposing method in the first indicating module 10, which corresponds to the LED lamp in the upper portion of "monitoring" in fig. 8.
The second LED lamp and the fourth LED lamp are respectively corresponding to the upper difference and the lower difference in the figure.
In this embodiment, when the battery pack testing device includes the digital display resistance meter head, the display panel of the digital display resistance meter head is disposed through the opening on the housing 40.
In this embodiment, K1 and K2 in fig. 5 can also be implemented by button switches, specifically, refer to the button corresponding to the "temperature-sensitive internal resistance" and the button corresponding to the "power supply" in fig. 8.
The above description is only for various embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and all such changes or substitutions are included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The device for testing the battery pack is characterized by comprising a first plug connector and a plurality of first indicating modules, wherein the first indicating modules are used for sending out indicating information to indicate the state of a temperature sensor in the battery pack when being powered on;
the first connector comprises a first connecting contact and a plurality of second connecting contacts;
the first connecting contact is used for connecting a first voltage end, the second connecting contact is connected with a first connecting end of the first indicating module, a second connecting end of the first indicating module is used for connecting a second voltage end, and when two ends of the temperature sensor are respectively connected to the first connecting contact and the second connecting contact, the temperature sensor is electrically communicated with the first indicating module;
wherein the first voltage terminal and the second voltage terminal have opposite polarities.
2. The apparatus as claimed in claim 1, wherein the first indicating module comprises a first LED lamp, a high potential terminal of the first LED lamp is connected to the second connection contact through a first current limiting resistor, and a low potential terminal of the first LED lamp is connected to the second voltage terminal.
3. The device according to claim 1, wherein the first voltage terminal is a first test terminal of a digital display resistance meter head, the second voltage terminal is a second test terminal of the digital display resistance meter head, the first test terminal and the second test terminal are used for testing resistance, the device further comprises a switching module, the switching module comprises a control terminal, a first terminal and a second terminal, the switching module is connected with the first indication module in parallel through the first terminal and the second terminal, and when the first connection point is connected with the first test terminal and the second connection terminal of the first indication module is connected with the second test terminal, the control terminal of the switching module short-circuits the first indication module under the control of the control module so that each temperature sensor is connected between the first test terminal and the second test terminal in parallel.
4. The apparatus of claim 3, wherein the switching module comprises an optical coupling device, the optical coupling device comprises a transmitting element for transmitting light and a receiving element for receiving light, the control terminal of the switching module comprises a high potential terminal of the transmitting element and a low potential terminal of the transmitting element, the high potential terminal of the receiving element is connected between the second connecting contact and the first indicating module, and the low potential terminal of the receiving element is used for connecting the second testing terminal;
when the first connecting point is connected with the first testing end, and the second connecting end of the first indicating module is connected with the second testing end, the high-potential end of the transmitting element and the low-potential end of the transmitting element are connected with a power supply, and then the first indicating module is short-circuited, so that each temperature sensor is connected between the first testing end and the second testing end in parallel.
5. The device according to claim 3 or 4, further comprising a digital display resistance meter head, wherein the digital display resistance meter head comprises a first power supply end, a second power supply end, a first test end and a second test end, wherein the first test end and the second test end are used for testing the resistance;
the first power supply end is used for being connected with a first polarity end of a power supply, and the second power supply end is used for being connected with a second polarity end of the power supply, wherein the polarities of the first polarity end and the second polarity end are opposite;
the first connecting contact point is connected with the first testing end, and the second connecting end of the first indicating module is connected with the second testing end.
6. The device of claim 5, wherein the digital display resistance meter head further comprises an upper voltage difference output end and a lower voltage difference output end, the upper voltage difference output end is connected with a second polarity end of the power supply through a second indicating module, and the second indicating module is used for sending out indicating information when the power supply is powered on so as to indicate whether the voltage difference between the first testing end and the second testing end is higher than a first preset voltage difference or not;
the lower voltage difference output end is connected with the second polarity end through a third indicating module, and the third indicating module is used for sending out indicating information to indicate whether the voltage difference between the first testing end and the second testing end is lower than a second preset voltage difference or not when the power is on.
7. The apparatus of claim 6, wherein the second indicator module comprises a second current limiting resistor and a second LED light in series, and wherein the third indicator module comprises a third current limiting resistor and a third LED light in series.
8. The apparatus of claim 1, further comprising a second connector comprising a third connecting contact for connecting a power source and the first connecting end of the monitoring element in the monitoring board;
the first plug connector or the second plug connector further comprises a fourth connecting contact used for being connected with the second connecting end of the monitoring element, the fourth connecting contact is connected with the second voltage end through a fourth indicating module, and the fourth indicating module is used for sending indicating information to indicate the resistance state of the monitoring element when the monitoring element is powered on.
9. The apparatus of claim 8, wherein said fourth indicator module comprises an LED light and a fourth current limiting resistor, and wherein a high potential terminal of said fourth indicator module is connected to said third connecting contact through said fourth current limiting resistor.
10. A battery pack testing apparatus, characterized in that it comprises a housing and a battery pack testing device according to any of claims 1-9, which is arranged inside the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921995557.8U CN211478575U (en) | 2019-11-15 | 2019-11-15 | Battery pack testing device and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921995557.8U CN211478575U (en) | 2019-11-15 | 2019-11-15 | Battery pack testing device and equipment |
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| CN211478575U true CN211478575U (en) | 2020-09-11 |
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| CN201921995557.8U Active CN211478575U (en) | 2019-11-15 | 2019-11-15 | Battery pack testing device and equipment |
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