CN213149189U - Battery testing board and battery testing device - Google Patents
Battery testing board and battery testing device Download PDFInfo
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- CN213149189U CN213149189U CN202020912216.6U CN202020912216U CN213149189U CN 213149189 U CN213149189 U CN 213149189U CN 202020912216 U CN202020912216 U CN 202020912216U CN 213149189 U CN213149189 U CN 213149189U
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Abstract
The utility model is suitable for the technical field of battery testing, in particular to a battery testing board and a battery testing device, wherein, the battery testing board comprises a main control module, a battery charging interface, a battery discharging interface, a load interface, a communication interface, a charger interface and a switch control detection module, the main control module carries out battery testing work according to a control command sent by an upper computer and outputs a charging control signal, a discharging control signal and a backflow prevention control signal to the switch control detection module so as to sequentially control the switch control detection module to communicate the charger interface and the battery charging interface to carry out the charging function detection of the battery, communicate the battery discharging interface and the interface to carry out the discharging function detection of the battery and communicate the battery charging interface and the load interface to carry out the backflow prevention function detection of the battery, the battery testing board has few functional modules and simple structure, the method is suitable for more occasions and has high universality.
Description
Technical Field
The utility model belongs to the technical field of the battery test, especially, relate to a battery test panel and battery testing arrangement.
Background
With the development of science and technology, batteries are applied to more and more devices, such as robots, electric vehicles, and the like, and the safety and stability of the batteries are directly related to the safety and stability of the devices, so it is necessary to strictly detect the incoming materials of the batteries.
However, the existing detection equipment is mainly used by battery manufacturers, has high professional degree, complex equipment and very high price, is only suitable for professional battery manufacturers, and has no universality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery test panel aims at solving traditional battery test equipment and has the problem that the commonality is low.
The embodiment of the utility model provides a first aspect provides a battery test board, battery test board include the circuit board and set up host system, battery charging interface, battery discharging interface, load interface, communication interface, charger interface and on-off control detection module on the circuit board;
the charger interface, the battery charging interface, the battery discharging interface and the load interface are respectively electrically connected with the switch control detection module, the switch control detection module is also electrically connected with the main control module, the charger interface is connected with a charger, the communication interface is connected with an upper computer, the load interface is connected with a dummy load, the battery discharging interface is connected with a discharging end of a battery to be tested, and the battery charging interface is connected with a charging end of the battery to be tested;
the main control module is used for outputting a charging control signal, a discharging control signal and a backflow prevention control signal according to a control instruction output by the upper computer;
the switch control detection module is used for:
when the charging control signal is received, the battery charging interface and the charger interface are communicated, and a first current feedback signal is output to the main control module;
when the discharging control signal is received, the battery discharging interface and the load interface are communicated, and a second current feedback signal is output to the main control module;
when the backflow preventing control signal is received, the battery charging interface and the load interface are communicated, and a third current feedback signal is output to the main control module;
the main control module is further configured to:
determining that the charging and discharging functions of the battery to be tested are normal when the current value of the first current feedback signal and the current value of the second current feedback signal are within a preset current range;
and when the current value of the third current feedback signal is zero, determining that the backflow prevention function of the battery to be tested is normal.
In one embodiment, the switch control detection module comprises a first current sampling circuit, a second current sampling circuit, a third current sampling circuit, a first switch circuit, a second switch circuit, and a third switch circuit;
the charger interface, the first switch circuit, the first current sampling circuit and the battery charging interface are electrically connected in sequence, the battery discharging interface, the second current sampling circuit, the second switch circuit and the load interface are electrically connected in sequence, the battery charging interface, the third current sampling circuit, the third switch circuit and the load interface are electrically connected in sequence, and the first switch circuit, the second switch circuit and the third switch circuit are also electrically connected with the main control module respectively;
the first switch circuit is used for being conducted when the charging control signal is received, communicating the battery charging interface and the charger interface and outputting a first current detection signal to the main control module;
the second switch circuit is conducted when receiving the discharge control signal so as to communicate the battery discharge interface and the load interface and output a second current detection signal to the main control module;
the third switch circuit is conducted when receiving the backflow prevention control signal so as to communicate the battery charging interface and the load interface and output a third current detection signal to the main control module;
the first current sampling circuit outputs a first current feedback signal to the main control module when the first switch circuit is switched on;
the second current sampling circuit outputs a second current feedback signal to the main control module when the second switch circuit is switched on;
and the third current sampling circuit outputs a third current feedback signal to the main control module when the third switch circuit is switched on.
In one embodiment, the first current sampling circuit, the second current sampling circuit, and the third current sampling circuit comprise a current transformer or a sampling resistor.
In one embodiment, the battery test board further comprises a battery communication interface, and the battery communication interface is connected with the main control module and a communication end of the battery;
the battery communication interface is used for feeding back the electrical parameters of the battery to the main control module.
In one embodiment, the battery test board further comprises an impedance adjusting interface, and the impedance adjusting interface is connected with the main control module and the dummy load;
the main control module is further used for outputting an impedance adjusting signal according to a control instruction of the upper computer and outputting the impedance adjusting signal to the dummy load through the impedance adjusting interface so as to control the dummy load to output impedance with a resistance value corresponding to the resistance value to the load interface.
In one embodiment, the battery test board further comprises an electronic load debugging interface, the electronic load debugging interface connecting the master control module and the dummy load;
the main control module is further used for outputting an impedance adjusting signal according to a control instruction of the upper computer and outputting the impedance adjusting signal to the dummy load through the electronic load debugging interface so as to change the resistance value of the dummy load.
In one embodiment, the battery test board further comprises a fan interface for connecting a heat dissipation fan for dissipating heat from the dummy load.
In one embodiment, the battery test board further comprises a DC/DC conversion circuit, a power input end of the DC/DC conversion circuit is connected to the charger interface, and a power output end of the DC/DC conversion circuit is connected to a power end of the main control module;
the DC/DC conversion circuit is used for carrying out voltage reduction conversion on the direct-current power supply input by the charger and outputting a working power supply to the main control module.
The utility model discloses the second aspect of embodiment provides a battery testing arrangement, battery testing arrangement include host computer, dummy load, charger and as above the battery survey test panel.
In one embodiment, the dummy load comprises a cement resistor assembly or an electronic load meter.
The utility model adopts the main control module, the battery charging interface, the battery discharging interface, the load interface, the communication interface, the charger interface and the switch control detection module to form the battery test board, the main control module carries out the battery test work according to the control command sent by the upper computer and outputs the charging control signal, the discharging control signal and the backflow-preventing control signal to the switch control detection module so as to control the switch control detection module to communicate the charger interface and the battery charging interface in sequence to carry out the charging function detection of the battery, communicate the battery discharging interface and the interface to carry out the discharging function detection of the battery and communicate the battery charging interface and the load interface to carry out the backflow-preventing function detection of the battery, when determining that each function of the battery is normal, the control switch control detection module correspondingly communicates each interface to carry out the battery aging test, the battery test board has the advantages of few functional modules, simple structure, applicability to more occasions and high universality.
Drawings
Fig. 1 is a schematic view of a first structure of a battery test board according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second structure of a battery test board according to an embodiment of the present invention;
fig. 3 is a third schematic structural view of the battery test board according to the embodiment of the present invention.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The utility model discloses a first aspect of the embodiment provides a battery test panel 100.
As shown in fig. 1, fig. 1 is a first schematic structural diagram of a battery test board 100 according to an embodiment of the present invention, the battery test board 100 includes a circuit board, and a main control module 10, a battery charging interface 50, a battery discharging interface 60, a load interface 70, a communication interface 40, a charger interface 30, and a switch control detection module 20, which are disposed on the circuit board;
the charger interface 30, the battery charging interface 50, the battery discharging interface 60 and the load interface 70 are respectively electrically connected with the switch control detection module 20, the switch control detection module 20 is also electrically connected with the main control module 10, the charger interface 30 is connected with the charger 200, the communication interface 40 is connected with the upper computer 300, the load interface 70 is connected with the dummy load 400, the battery discharging interface 60 is connected with the discharging end of the battery 500 to be tested, and the battery charging interface 50 is connected with the charging end of the battery 500 to be tested;
the main control module 10 is configured to output a charging control signal, a discharging control signal and a backflow prevention control signal according to a control instruction output by the upper computer 300;
a switch control detection module 20 configured to:
when receiving the charging control signal, the battery charging interface 50 and the charger interface 30 are connected, and a first current feedback signal is output to the main control module 10;
when receiving the discharging control signal, the battery discharging interface 60 and the load interface 70 are connected, and a second current feedback signal is output to the main control module 10;
when the backflow prevention control signal is received, the battery charging interface 50 and the load interface 70 are communicated, and a third current feedback signal is output to the main control module 10;
the main control module 10 is further configured to:
determining that the charging and discharging functions of the battery 500 to be tested are normal when the current value of the first current feedback signal and the current value of the second current feedback signal are within a preset current range;
when the current value of the third current feedback signal is zero, it is determined that the backflow prevention function of the battery 500 to be tested is normal.
In this embodiment, the connected upper computer 300 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices.
The connected dummy load 400 may be a cement resistor component or an electronic load meter, and the resistance value of the dummy load 400 may be accessed to the load interface 70 after debugging or debugged through the main control module 10, and the specific debugging manner is not limited.
The connected charger 200 outputs a direct current power to the charging port, and the type and structure of the charger 200 are not limited.
The connected battery 500 to be tested is a rechargeable battery, such as a lithium battery, a lead storage battery, etc., the battery 500 to be tested may further include a battery management module, such as a BMS module, a PMS module, etc., for charge and discharge protection of the battery 500 to be tested, the battery 500 to be tested may be used for a robot or an electric vehicle to provide a driving power source, the battery 500 to be tested may include a charging terminal, a discharging terminal and a communication terminal, and the charging terminal, the discharging terminal and the communication terminal may be the same port or different ports, which is specifically determined according to the type of the battery 500 to be tested.
The main control module 10 may be an MCU, a Central Processing Unit (CPU), or other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The main control module 10 is connected with the switch control detection module 20 and the upper computer 300 through the communication interface 40, receives the control instruction of the upper computer 300 to control the switch control detection module 20 to be switched, so as to perform the charge and discharge function and the backflow prevention function detection on the battery 500 to be tested, and simultaneously feed back the detected data and the determination result to the upper computer 300, specifically, during testing, a worker can control the upper computer 300 to send out a charging detection control instruction, a discharging detection control instruction, an anti-backflow detection control instruction and/or an aging detection control instruction and the like through an operation interface on the upper computer 300, and the main control module 10 correspondingly sends out a charging control signal, a discharging control signal and an anti-backflow control signal according to the control instruction sent out by the upper computer 300 so as to detect the charging and discharging function and the anti-backflow function of the battery 500 to be tested.
When the switch control detection module 20 receives the charging control signal, the internal switch is correspondingly turned on and is communicated with the charger interface 30 and the battery charging interface 50, the charger 200 is connected with the charging end of the battery 500 to be tested through the charger interface 30, the switch control detection module 20 and the battery charging interface 50, the charger 200 inputs a direct current power supply to the battery 500 to be tested for charging, the switch control detection module 20 simultaneously detects the current on the charging loop and feeds back a first current feedback signal to the main control module 10, the main control module 10 compares the detected first current feedback signal with a preset charging current threshold value, when the first current feedback signal is within the range of the preset charging current threshold value, the charging function of the battery 500 to be tested is determined to be normal, otherwise, the detected current value of the first current feedback signal and the determination result are fed back to the upper computer 300, the switch control detection module 20 can further detect the terminal voltage of the battery charging interface 50, and simultaneously feed back the detected terminal voltage detection signal to the main control module 10 to determine whether the battery 500 to be tested is fully charged or normally charged, when the charging voltage and the charging current are detected to be abnormal, the main control module 10 controls the switch control detection module 20 to disconnect the battery 500 to be tested from the charger 200, the charging is stopped, and the charging control protection is further performed.
When the electric quantity of the battery 500 to be tested reaches a certain electric quantity or after the charging function is detected, the main control module 10 sends out a discharging control signal, the switch control detection module 20 communicates with the discharging end of the battery and the load interface 70 when receiving the discharging control signal, the battery 500 to be tested starts to discharge, the switch control detection module 20 detects the current on the discharging loop and outputs a second current feedback signal to the main control module 10, the main control module 10 compares the current value of the second current feedback signal with a preset discharging current threshold value, the normal discharging function of the battery 500 to be tested is determined when the current value is within the preset discharging current threshold value, otherwise, the abnormal current value is determined, and meanwhile, the detected current value of the second current feedback signal and the determination result are fed back to the host computer 300 to inform a worker.
The anti-backflow function test mainly tests whether the charging end of the battery 500 to be tested discharges outwards when the charger 200 is not connected, the normal battery 500 to be tested only allows the discharging end to discharge outwards, the charging end does not allow the discharging outwards, otherwise, potential safety hazards exist, in order to ensure that the charging end of the battery 500 to be tested cannot discharge outwards, a battery manufacturer generally adds an anti-backflow circuit, therefore, the function test needs to be carried out on the performance of the anti-backflow circuit in the battery 500 to be tested, when the main control module 10 receives a control instruction of the upper computer 300, the anti-backflow control signal is output to the switch control detection module 20, the switch control detection module 20 is communicated with the battery charging interface 50 and the load interface 70, detects the current on the loop and feeds back a third current feedback signal to the main control module 10, when the current value of the third current feedback signal is not zero, that is, when the current is detected, it is determined that the backflow prevention function of the battery 500 to be tested is abnormal, and when the current value of the third current feedback signal is zero, it is determined that the backflow prevention function of the battery 500 to be tested is normal, and the main control module 10 feeds back the detected current value of the third current feedback signal and the determination result to the upper computer 300 to inform a worker.
The battery test board 100 can detect the charge and discharge function and the backflow prevention function of the battery 500 to be tested, and can also perform charge and discharge curve drawing according to the detected current and the time point during testing.
When the charging and discharging function and the backflow prevention function are determined to be normal, the upper computer 300 may further output an aging detection control instruction to the main control module 10, and the main control module 10 outputs an aging control signal to the switch control detection module 20, so as to sequentially and repeatedly communicate the charger interface 30 with the battery charging interface 50 and communicate the battery discharging interface 60 with the load interface 70, perform the charging and discharging aging test one by one, and report a current value according to a preset time interval, thereby forming an aging current curve.
An independent power supply can be arranged on the battery test board 100 for supplying power, or the power can be supplied through the charger interface 30, and the specific power supply mode is not limited.
The utility model adopts the main control module 10, the battery charging interface 50, the battery discharging interface 60, the load interface 70, the communication interface 40, the charger interface 30 and the switch control detection module 20 to form the battery test board 100, the main control module 10 performs the test work of the battery 500 to be tested according to the control command sent by the host computer 300, and outputs the charging control signal, the discharging control signal and the backflow prevention control signal to the switch control detection module 20, so as to control the switch control detection module 20 to communicate the charger interface 30 and the battery charging interface 50 in sequence to perform the charging function detection of the battery 500 to be tested, communicate the battery discharging interface 60 with the load interface 70 to perform the discharging function detection of the battery 500 to be tested and communicate the battery charging interface 50 with the load interface 70 to perform the backflow prevention function detection of the battery 500 to be tested, when determining that each function of the battery 500 to be tested is normal, accessible control switch control detection module 20 corresponds each interface of intercommunication in order to carry out the battery 500 aging testing that awaits measuring, and the battery is surveyed test board 100 functional module and is few, simple structure, and applicable in more occasions, the commonality is high.
As shown in fig. 2, in one embodiment, the switch control detection module 20 includes a first current sampling circuit 24, a second current sampling circuit 25, a third current sampling circuit 26, a first switch circuit 21, a second switch circuit 22, and a third switch circuit 23;
the charger interface 30, the first switch circuit 21, the first current sampling circuit 24 and the battery charging interface 50 are electrically connected in sequence, the battery discharging interface 60, the second current sampling circuit 25, the second switch circuit 22 and the load interface 70 are electrically connected in sequence, the battery charging interface 50, the third current sampling circuit 26, the third switch circuit 23 and the load interface 70 are electrically connected in sequence, and the first switch circuit 21, the second switch circuit 22 and the third switch circuit 23 are also electrically connected with the main control module 10 respectively;
the first switch circuit 21 is configured to be turned on when receiving the charging control signal, communicate the battery charging interface 50 and the charger interface 30, and output a first current detection signal to the main control module 10;
the second switch circuit 22 is turned on when receiving the discharge control signal to connect the battery discharge interface 60 and the load interface 70, and outputs a second current detection signal to the main control module 10;
the third switch circuit 23 is turned on when receiving the backflow prevention control signal to communicate the battery charging interface and the load interface 70, and outputs a third current detection signal to the main control module 10;
the first current sampling circuit 24 outputs a first current feedback signal to the main control module 10 when the first switch circuit 21 is turned on;
the second current sampling circuit 25 outputs a second current feedback signal to the main control module 10 when the second switch circuit 22 is turned on;
the third current sampling circuit 26 outputs a third current feedback signal to the main control module 10 when the third switch circuit 23 is turned on.
In this embodiment, the first switch circuit 21, the second switch circuit 22, and the third switch circuit 23 may be switching devices having an on/off function, such as a switch tube, a relay, and the like, and the first current sampling circuit 24, the second current sampling circuit 25, and the third current sampling circuit 26 include a current transformer or a sampling resistor.
When receiving the charging control signal, the first switch circuit 21 is turned on and is connected to the charger interface 30 and the battery charging interface 50, the charger 200 is connected to the charging end of the battery through the charger interface 30, the first switch circuit 21, the first current sampling circuit 24 and the battery charging interface 50, the charger 200 inputs a dc power supply to the battery for charging, the first current sampling circuit 24 detects the current on the charging loop and feeds back a first current feedback signal to the main control module 10, and the main control module 10 compares the detected first current feedback signal with a preset charging current threshold.
When receiving the discharging control signal, the second switch circuit 22 is turned on to connect the discharging end of the battery and the load interface 70, the battery starts to discharge, the second current sampling circuit 25 detects the current in the discharging loop and outputs a second current feedback signal to the main control module 10, and the main control module 10 compares the current value of the second current feedback signal with a preset discharging current threshold.
The third switch circuit 23 is turned on when receiving the anti-backflow control signal, the switch control detection module 20 communicates with the battery charging interface 50 and the load interface 70, detects the current on the loop, and feeds back a third current feedback signal to the main control module 10, when the current value of the third current feedback signal is not zero, that is, when the current is detected, it is determined that the anti-backflow function of the battery is abnormal, and when the current value of the third current feedback signal is zero, it is determined that the anti-backflow function of the battery is normal.
In this embodiment, each switch circuit is turned on, that is, the charging test, the discharging test and the backflow prevention test are performed independently, so as to avoid the occurrence of current signal series flow and the interference of the detection result.
As shown in fig. 3, in an embodiment, the battery test board 100 further includes a battery communication interface 80, where the battery communication interface 80 connects the main control module 10 and a communication terminal of the battery;
and a battery communication interface 80 for feeding back the electrical parameters of the battery to the main control module 10.
In this embodiment, the communication terminals of the individual batteries 500 to be tested are independently arranged, so the battery test board 100 further has a battery communication interface 80 connected to the communication terminals of the batteries 500 to be tested, the battery communication interface 80 can read the electrical parameters of the batteries 500 to be tested in the battery management module and feed the electrical parameters back to the main control module 10, and can also test whether the communication function of the battery communication interface 80 is normal, the electrical parameters of the batteries 500 to be tested can include the working current, the working voltage, the working power, and the like of the batteries, and the main control module 10 can set the preset charging current threshold, the preset discharging current threshold, the charging voltage threshold, and the discharging voltage threshold according to the electrical parameters, thereby providing the reference electrical parameters.
Referring to fig. 3, in an embodiment, the battery test board 100 further includes an impedance adjusting interface 90, wherein the impedance adjusting interface 90 is connected to the main control module 10 and the dummy load 400;
the main control module 10 is further configured to output an impedance adjusting signal according to a control instruction of the upper computer 300, and output the impedance adjusting signal to the dummy load 400 through the impedance adjusting interface 90, so as to control the dummy load 400 to output an impedance with a resistance value corresponding to the magnitude to the load interface 70.
In this embodiment, when the dummy load 400 is a cement resistor assembly, one or more resistors in the cement resistor assembly are controlled to be connected through the interface, so as to realize the step adjustment of the load current, and the cement resistor assembly has the characteristic of low cost.
Referring to fig. 3, in an embodiment, the battery test board 100 further includes an electronic load debug interface 110, where the electronic load debug interface 110 is connected to the main control module 10 and the dummy load 400;
the main control module 10 is further configured to output an impedance adjusting signal according to a control instruction of the upper computer 300, and output the impedance adjusting signal to the dummy load 400 through the electronic load debugging interface 110, so as to change the resistance value of the dummy load 400.
In this embodiment, when the dummy load 400 is an electronic load meter, the load meter generally has a communication interface 40, and the battery test board 100 is further provided with an electronic load debugging interface 110, so that automatic setting and test operation of parameters of the electronic load meter can be realized.
Referring to fig. 3, in an embodiment, the battery test board 100 further includes a fan interface 120, and the fan interface 120 is used for connecting a heat dissipation fan 600 for dissipating heat of the dummy load 400.
In this embodiment, the dummy load 400 also radiates heat during operation, and in order to avoid an excessive temperature of the dummy load 400, a heat dissipation fan 600 is further disposed around the dummy load 400, and meanwhile, the heat dissipation fan 600 is connected to the battery test board 100 through a fan interface 120, and the other end of the fan interface 120 is connected to the main control module 10 for performing on/off and speed regulation control.
Referring to fig. 3, in an embodiment, the battery test board 100 further includes a DC/DC conversion circuit 130, a power input terminal of the DC/DC conversion circuit 130 is connected to the charger interface 30, and a power output terminal of the DC/DC conversion circuit 130 is connected to a power terminal of the main control module 10;
the DC/DC conversion circuit 130 is configured to perform voltage reduction conversion on the DC power input by the charger 200 and output the working power to the main control module 10.
In this embodiment, in order to improve portability and reduce cost, the battery test board 100 is powered by the DC/DC conversion circuit 130, the DC/DC conversion circuit 130 is connected to the charger 200 and the main control module 10 to provide a working power supply for the main control module 10, and the DC/DC conversion circuit 130 can be electrically connected to other modules to provide corresponding working power supplies.
The utility model provides a second aspect provides a battery testing arrangement, battery testing arrangement include host computer 300, dummy load 400, charger 200 and test panel 100 is surveyed to battery as above.
The utility model also provides a battery testing device, this battery testing device include host computer 300, dummy load 400, charger 200 and battery and survey test panel 100, and this battery surveys test panel 100's concrete structure and refers to above-mentioned embodiment, because this battery testing device has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is not given here again. The charger interface 30 is connected with the charger 200, the communication interface 40 is connected with the upper computer 300, the load interface 70 is connected with the dummy load 400, the battery discharging interface 60 is connected with the discharging end of the battery 500 to be tested, and the battery charging interface 50 is connected with the charging end of the battery 500 to be tested.
The upper computer 300 is connected with the battery test board 100 through the communication interface 40, the upper computer 300 sends a control instruction to test and control the battery 500 to be tested on the battery test board 100 so as to detect the charge and discharge function and the backflow prevention function of the battery 500 to be tested, and receives data and a judgment result detected by the battery test board 100, during testing, a worker can control the upper computer 300 to send a charge detection control instruction, a discharge detection control instruction, a backflow prevention detection control instruction and/or an aging detection control instruction and the like through an operation interface on the upper computer 300, the main control module 10 correspondingly sends a charge control signal, a discharge control signal and a backflow prevention control signal according to the control instruction sent by the upper computer 300 so as to detect the charge and discharge function and the backflow prevention function of the battery 500 to be tested.
In one embodiment, the dummy load 400 comprises a cement resistor assembly or an electronic load meter.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A battery test board is characterized by comprising a circuit board, and a main control module, a battery charging interface, a battery discharging interface, a load interface, a communication interface, a charger interface and a switch control detection module which are arranged on the circuit board;
the charger interface, the battery charging interface, the battery discharging interface and the load interface are respectively electrically connected with the switch control detection module, the switch control detection module is also electrically connected with the main control module, the charger interface is connected with a charger, the communication interface is connected with an upper computer, the load interface is connected with a dummy load, the battery discharging interface is connected with a discharging end of a battery to be tested, and the battery charging interface is connected with a charging end of the battery to be tested;
the main control module is used for outputting a charging control signal, a discharging control signal and a backflow prevention control signal according to a control instruction output by the upper computer;
the switch control detection module is used for:
when the charging control signal is received, the battery charging interface and the charger interface are communicated, and a first current feedback signal is output to the main control module;
when the discharging control signal is received, the battery discharging interface and the load interface are communicated, and a second current feedback signal is output to the main control module;
when the backflow preventing control signal is received, the battery charging interface and the load interface are communicated, and a third current feedback signal is output to the main control module;
the main control module is further configured to:
determining that the charging and discharging functions of the battery to be tested are normal when the current value of the first current feedback signal and the current value of the second current feedback signal are within a preset current range;
and when the current value of the third current feedback signal is zero, determining that the backflow prevention function of the battery to be tested is normal.
2. The battery test board of claim 1, wherein the switch control detection module comprises a first current sampling circuit, a second current sampling circuit, a third current sampling circuit, a first switch circuit, a second switch circuit, and a third switch circuit;
the charger interface, the first switch circuit, the first current sampling circuit and the battery charging interface are electrically connected in sequence, the battery discharging interface, the second current sampling circuit, the second switch circuit and the load interface are electrically connected in sequence, the battery charging interface, the third current sampling circuit, the third switch circuit and the load interface are electrically connected in sequence, and the first switch circuit, the second switch circuit and the third switch circuit are also electrically connected with the main control module respectively;
the first switch circuit is used for being conducted when the charging control signal is received, communicating the battery charging interface and the charger interface and outputting a first current detection signal to the main control module;
the second switch circuit is conducted when receiving the discharge control signal so as to communicate the battery discharge interface and the load interface and output a second current detection signal to the main control module;
the third switch circuit is conducted when receiving the backflow prevention control signal so as to communicate the battery charging interface and the load interface and output a third current detection signal to the main control module;
the first current sampling circuit outputs a first current feedback signal to the main control module when the first switch circuit is switched on;
the second current sampling circuit outputs a second current feedback signal to the main control module when the second switch circuit is switched on;
and the third current sampling circuit outputs a third current feedback signal to the main control module when the third switch circuit is switched on.
3. The battery test board of claim 2, wherein the first current sampling circuit, the second current sampling circuit, and the third current sampling circuit comprise a current transformer or a sampling resistor.
4. The battery test board according to claim 1, wherein the battery test board further comprises a battery communication interface, the battery communication interface connecting the main control module and the communication end of the battery;
the battery communication interface is used for feeding back the electrical parameters of the battery to the main control module.
5. The battery test board of claim 1, wherein the battery test board further comprises an impedance adjustment interface, the impedance adjustment interface connecting the master control module and the dummy load;
the main control module is further used for outputting an impedance adjusting signal according to a control instruction of the upper computer and outputting the impedance adjusting signal to the dummy load through the impedance adjusting interface so as to control the dummy load to output impedance with a resistance value corresponding to the resistance value to the load interface.
6. The battery test board of claim 1, wherein the battery test board further comprises an electronic load debug interface, the electronic load debug interface connecting the master control module and the dummy load;
the main control module is further used for outputting an impedance adjusting signal according to a control instruction of the upper computer and outputting the impedance adjusting signal to the dummy load through the electronic load debugging interface so as to change the resistance value of the dummy load.
7. The battery test board of claim 1, wherein the battery test board further comprises a fan interface for connecting a heat sink fan that dissipates heat from the dummy load.
8. The battery test board according to claim 1, wherein the battery test board further comprises a DC/DC conversion circuit, a power input terminal of the DC/DC conversion circuit is connected to the charger interface, and a power output terminal of the DC/DC conversion circuit is connected to a power terminal of the main control module;
the DC/DC conversion circuit is used for carrying out voltage reduction conversion on the direct-current power supply input by the charger and outputting a working power supply to the main control module.
9. A battery test device comprising an upper computer, a dummy load, a charger and a battery test board according to any one of claims 1 to 8.
10. The battery testing apparatus of claim 9, wherein the dummy load comprises a cement resistor pack or an electronic load meter.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113805079A (en) * | 2021-08-07 | 2021-12-17 | 宝星智能科技(上海)有限公司 | Battery pack charging and discharging service life detection device |
| CN114161932A (en) * | 2021-11-18 | 2022-03-11 | 深圳欣锐科技股份有限公司 | Backflow prevention detection circuit and method |
| CN116068432A (en) * | 2023-03-06 | 2023-05-05 | 广州疆海科技有限公司 | Aging test method, device and system for energy storage equipment and storage medium |
| CN116699296A (en) * | 2023-08-08 | 2023-09-05 | 辰芯半导体（深圳）有限公司 | Load detection circuit and electronic device |
| CN117054877A (en) * | 2023-10-10 | 2023-11-14 | 宁德时代新能源科技股份有限公司 | Offline testing system of battery, battery production line and testing method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113805079A (en) * | 2021-08-07 | 2021-12-17 | 宝星智能科技(上海)有限公司 | Battery pack charging and discharging service life detection device |
| CN114161932A (en) * | 2021-11-18 | 2022-03-11 | 深圳欣锐科技股份有限公司 | Backflow prevention detection circuit and method |
| CN114161932B (en) * | 2021-11-18 | 2024-03-15 | 深圳欣锐科技股份有限公司 | Anti-backflow detection circuit and method |
| CN116068432A (en) * | 2023-03-06 | 2023-05-05 | 广州疆海科技有限公司 | Aging test method, device and system for energy storage equipment and storage medium |
| CN116699296A (en) * | 2023-08-08 | 2023-09-05 | 辰芯半导体（深圳）有限公司 | Load detection circuit and electronic device |
| CN116699296B (en) * | 2023-08-08 | 2023-10-31 | 辰芯半导体（深圳）有限公司 | Load detection circuit and electronic device |
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