CN212648319U

CN212648319U - Power battery pack testing assembly and practical training platform

Info

Publication number: CN212648319U
Application number: CN202021801002.8U
Authority: CN
Inventors: 吴立新
Original assignee: Inwinic Technologies Shenzhen Co ltd
Current assignee: Inwinic Technologies Shenzhen Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-03-02
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses a power battery package test assembly and practical training platform, wherein, the power battery package test assembly comprises a battery module, a charging module, a load module and a battery management module, each module is provided with an independent terminal and can be connected with each other through a wire to form a plurality of different loops, for example, a user can connect the charging module, the battery management module and the battery module through wires to form a charging loop, and then the charging loop is debugged through a measuring instrument; the battery module, the battery management module and the load module can form a discharging loop through a lead, and then the discharging loop is debugged; can also all accomplish the back at the assembly at all modules, carry out the complete machine debugging, perhaps carry out software and hardware antithetical couplet with each module and host computer and transfer, the utility model discloses a manual equipment of user and debugging power battery package to help the user to master power battery's theory of operation fast.

Description

Power battery pack testing assembly and practical training platform

Technical Field

The utility model relates to an electric automobile power supply technical field, in particular to power battery package test assembly and real platform of instructing.

Background

Along with the development of the Chinese society, the energy and environmental problems come along, the advantages of relatively clean energy, less emission, low noise and the like used by the electric automobile become the current solution, the demand of the electric automobile is increased, the electric automobile becomes one of the future development directions of the automobile industry, along with the vigorous development of the electric automobile industry, the demand of technical talents of the electric automobile is increased, and a batch of maintenance personnel with strong speciality and high quality is urgently needed.

However, the power battery pack of the electric vehicle is complex in structure and working principle, the teaching method of video or PPT demonstration is insufficient in intuition of the teaching process, and the learning efficiency of students is very low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power battery package test assembly, the subassembly that aims at providing the power battery package supplies the student to practice the hand-held equipment and the debugging to improve student's learning efficiency.

In order to achieve the above object, the utility model provides a power battery package test assembly for instruct the platform in fact, instruct the platform in fact and include the host computer, this power battery package test assembly includes:

the base is provided with a plurality of mounting grooves;

the battery module is detachably mounted on the mounting groove and is provided with a power terminal and a control signal access terminal;

the charging module is detachably mounted on the mounting groove and provided with an input interface and an output terminal, the input interface is used for accessing power supply voltage, the output terminal is connected with a power terminal of the battery module through a lead, and the charging module is used for accessing the power supply voltage and converting the power supply voltage into charging voltage to charge the battery module;

the load module is detachably mounted on the mounting groove and provided with an input terminal, the input terminal of the load module is connected with a power terminal of the battery module through a lead, and the load module is used for discharging the battery module;

the battery management module is detachably arranged on the mounting groove and is provided with a control terminal, a communication terminal and a collection terminal; the communication terminal of the battery management module is connected with the upper computer, the acquisition terminal of the battery management module is connected with the power terminal of the battery module, and the control terminal of the battery management module is connected with the control signal access terminal of the battery module; the battery management module is used for collecting battery information of the battery module and outputting the battery information to the upper computer so as to receive a control signal generated by the upper computer according to the battery information and control the work of the battery module.

Optionally, the battery terminals of the battery module comprise a positive terminal and a negative terminal, and the battery module comprises a battery pack, a total positive electron switch and a total negative electron switch;

the output end of the total negative electron switch is connected with the negative terminal of the battery module, the input end of the total negative electron switch is connected with the negative electrode of the battery pack, the positive electrode of the battery pack is connected with the input end of the total positive electron switch, and the output end of the total positive electron switch is connected with the positive terminal of the battery module;

and the controlled end of the total negative electronic switch are respectively connected with the control terminal of the battery management module.

Optionally, the battery pack comprises a first battery pack, a second battery pack and a maintenance switch;

the negative electrode of the first battery pack is the negative electrode of the battery pack; the anode of the first battery pack is connected with the input end of the maintenance switch, the output end of the maintenance switch is connected with the cathode of the second battery pack, and the anode of the second battery pack is the anode of the battery pack;

the first battery pack consists of a plurality of single batteries which are connected in series;

the second battery pack is composed of a plurality of single batteries which are connected in series

The acquisition terminal of the battery management module is provided with a plurality of line ends, and the line ends are connected with the single batteries in the first battery pack and the second battery pack one by one.

Optionally, the power battery pack testing assembly further comprises a hall current sensor, an output end of the hall current sensor is connected with the battery management module acquisition terminal, a detection end of the hall current sensor is connected with the battery pack, and the hall current sensor is used for detecting the current of the battery pack and outputting a corresponding current detection signal to the battery management module.

Optionally, the control signal comprises a slow charge signal; the charging module includes:

the alternating current charging port is used for accessing alternating current;

the input end of the charger is connected with the alternating current charging port, the charger is used for converting the alternating current into a first direct current,

the input end of the slow charging electronic switch is connected with the output end of the charger, the output end of the slow charging electronic switch is connected with the battery module, and the controlled end of the slow charging electronic switch is connected with the battery management module; the battery management module controls the slow charging electronic switch to be turned on according to the slow charging signal so as to output the first direct current to the battery module.

Optionally, the control signal comprises a fast charge signal; the charging module comprises a direct current charging port and a quick charging electronic switch;

the direct current charging port is used for accessing a second direct current;

the input end of the fast charging electronic switch is connected with the output end of the direct current charging port, the output end of the fast charging electronic switch is connected with the battery module, and the controlled end of the fast charging electronic switch is connected with the battery management module; and the battery management module controls the quick charge electronic switch to be switched on according to the quick charge signal so as to output the second direct current to the battery module.

Optionally, the load module comprises: the device comprises a load piece, a discharge electronic switch, a pre-charge electronic switch and a pre-charge resistor;

one end of the pre-charging resistor is connected with the output end of the pre-charging electronic switch, the other end of the pre-charging resistor is connected with the discharging electronic switch, and the common end of the pre-charging resistor and the discharging electronic switch is connected with the input end of the load; the input end of the pre-charging electronic switch is connected with the input end of the discharging electronic switch, and the common end of the pre-charging electronic switch and the discharging electronic switch is connected with the power supply terminal of the battery module;

the controlled end of the pre-charging electronic switch and the controlled end of the discharging electronic switch are respectively connected with the control terminal of the battery management module;

the pre-charging resistor buffers the input voltage when the pre-charging electronic switch is closed; the discharge electronic switch is used for being opened after the pre-charging is finished and short-circuiting the pre-charging resistor so as to reduce the power consumption of the pre-charging resistor.

Optionally, the battery terminals of the battery module include a positive terminal and a negative terminal, the power battery pack testing assembly further includes an external discharging module, and the external discharging module includes: a first pair of external discharge electronic switches, a second pair of external discharge electronic switches, and an external discharge port;

one end of the first pair of external discharge electronic switches is connected with the positive terminal of the battery module, and the other end of the first pair of external discharge electronic switches is connected with the positive electrode of the external discharge interface; one end of the second external discharge electronic switch is connected with the negative terminal of the battery module, and the other end of the second external discharge electronic switch is connected with the negative electrode of the external discharge interface;

and the controlled ends of the first pair of external discharge electronic switches and the second pair of external discharge electronic switches are respectively connected with the battery management module.

Optionally, the battery management module comprises:

the slave module is provided with an acquisition terminal and a communication terminal, the acquisition terminal is provided with a plurality of line ends and is respectively connected with the single batteries of the battery module one by one, and the slave module is used for acquiring the battery information of the single batteries in real time and outputting the battery information by the communication terminal of the slave module;

the main module is provided with a first communication terminal, a second communication terminal and a control terminal, the communication terminal of the main module is connected with an upper computer, the second communication terminal is connected with the slave module, the control terminal of the main module is connected with the battery module, and the main module is used for controlling and outputting battery information of the single batteries to the upper computer so as to receive control signals generated by the upper computer according to the battery information and control the work of the battery module.

The utility model discloses still provide a real platform of instructing, this real platform of instructing includes host computer and foretell power battery package test component.

The technical scheme of the utility model is that the battery module, the charging module, the load module and the battery management module are split to realize the zero scattering of the power battery pack, and the modules are provided with terminals and can be connected with each other through wires to form a plurality of different loops so as to realize various functions of the power battery step by step; for example, a user can connect the charging module, the battery management module and the battery module through a wire to form a charging loop so as to complete the debugging of the charging circuit; the battery module, the battery management module and the load module can form a discharging loop through a lead so as to finish debugging of the discharging loop; and after all the modules are assembled, the battery management module can communicate with an upper computer through a communication terminal of the battery management module, and all the modules are jointly adjusted with the upper computer, so that a user is helped to quickly master the working principle of the power battery.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a circuit diagram of an embodiment of a power battery pack testing assembly according to the present invention;

fig. 2 is a circuit diagram of another embodiment of the power battery pack testing assembly of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Upper computer	412	Second battery pack
20	Battery management module	413	Maintenance switch
				30	Charging module	51	Load member
40	Battery module	52	Discharge electronic switch
				50	Load module	53	Pre-charge electronic switch
60	External discharge module	54	Pre-charging resistor
				21	Slave module	61	First pair of external discharge electronic switches
22	Main module	62	Second pair of external discharge electronic switches
				31	AC charging port	63	External discharge port
32	Charging machine	71	Insulation detection terminal
				33	Slow charging electronic switch	72	Total positive adhesion detection end
34	DC charging port	73	Quick-charging adhesion detection end
				42	Total positive electron switch	74	Slow charging adhesion detection end
43	General negative electronic switch	75	Total negative adhesion detection end
				44	Hall current sensor	76	Discharge adhesion detection terminal
411	First battery pack	77	Pre-charging adhesion detection end

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a power battery package test assembly.

Referring to fig. 1 and 2, in an embodiment, the power battery pack testing assembly is used for a practical training platform, the practical training platform includes an upper computer 10, and the power battery pack testing assembly includes:

the base is provided with a plurality of mounting grooves;

a battery module 40 detachably mounted on the mounting groove, the battery module 40 having a power terminal and a control signal access terminal;

the charging module 30 is detachably mounted on the mounting groove, the charging module 30 is provided with an input interface and an output terminal, the input interface is used for accessing a power supply voltage, the output terminal is connected with a power terminal of the battery module 40 through a lead, and the charging module 30 is used for accessing the power supply voltage and converting the power supply voltage into a charging voltage to charge the battery module;

a load module 50 detachably mounted on the mounting groove, the load module 50 having an input terminal, the input terminal of the load module 50 being connected to the power terminal of the battery module 40 by a wire, the load module 50 being used for consuming power of the battery module 40;

the battery management module 20 is detachably mounted on the mounting groove, and the battery management module 20 is provided with a control terminal, a communication terminal and a collecting terminal; the communication terminal of the battery management module 20 is connected with the upper computer 10, the acquisition terminal of the battery management module 20 is connected with the power terminal of the battery module 40, and the control terminal of the battery management module 20 is connected with the control signal access terminal of the battery module 40; the battery management module 20 is used for collecting battery information of the battery module and outputting the battery information to the upper computer 10 so as to receive a control signal generated by the upper computer 10 according to the battery information and control the work of the battery module 40.

The base can be made of an insulating material, such as plastic, so that the electricity utilization safety of a user during the assembly of the power battery pack testing assembly is guaranteed; in practical applications, the base may have four side walls and a bottom plate; the installation groove can be arranged on a bottom plate of the base or a side wall of the base, and can be specifically arranged according to actual conditions, and the installation groove is not limited in the position;

the output voltage of the battery module 40 may be 70-80V, for example 72V, to ensure user safety, the power terminal may be a terminal with a screw hole, and the two ends of the wire are also correspondingly provided with terminals with screw holes, and the battery module is connected to the power terminal of the charging module 30, the wire and the output terminal of the charging module by screws, or other connection methods, as long as the modules are electrically connected in a detachable manner, which is not limited herein, and the connection between the following modules may be performed by using the above connection method or other connection methods, and will not be described again.

The input interface of the charging module 30 may be connected to a socket through a power line, so as to be connected to the commercial power; andor, the input interface is an alternating current input seat and can be connected with the charging gun; in this embodiment, three contacts of the ac input socket may be set to different colors, so that a user can conveniently identify a zero line, a live line and a ground line when using the ac input socket; the interfaces of the charging module 30 may be dispersedly disposed in the mounting grooves of the side wall of the base, so as to facilitate plugging, and it can be understood that when the input interface of the charging module 30 is connected with the AC power, the charging module 30 needs to have a built-in AC-DC conversion circuit or chip to charge the battery module 40.

The load module 50 may be a resistive load to dissipate power from the battery module 40.

The battery management module 20 can be implemented by using a control chip in cooperation with a peripheral circuit, such as a single chip microcomputer, a PLC, etc.; in practical application, a communication line, such as a CAN bus, may be separately provided; communication is established between the battery management module 20 and the modules such as the upper computer 10 and the charging module 30, and isolation of a power line and a communication line is achieved.

The upper computer 10 may be a computer or other intelligent device with a display and a mouse, after receiving the battery information output by the battery management module 20, the upper computer 10 displays the battery information on a display through a software algorithm, and a user displays the battery information on the display according to the battery information on the display, corresponding control signals, such as start of charging, start of discharging, stop of charging, stop of discharging, pause and the like, are output through a mouse, a keyboard, a touch screen or the like, the upper computer 10 outputs the control signals to the battery management module 20, in this embodiment, the battery information displayed by the display may be the health status information of the battery, such as SCO and battery capacity, or the operation information of the battery, such as the operating voltage of the battery, the charging temperature of the battery, the discharging current of the battery, etc.

The technical scheme of the utility model is that the battery module 40, the charging module 30, the load module 50 and the battery management module 20 are separated to disperse the power battery pack, each module is provided with terminals, and the terminals can be connected with each other through wires to form a plurality of different loops, so as to realize and debug each loop of the power battery step by step; for example, the user may connect the charging module 30, the battery management module 20, and the battery module 40 through wires to form a charging loop, so as to complete debugging of the charging loop; the battery module 40, the battery management module 20 and the load module 50 can also form a discharge loop through a lead so as to complete the debugging of the discharge loop; after all the modules are assembled, the communication terminal of the battery management module 20 is communicated with the upper computer 10, and software and hardware combined debugging is carried out on each module and the upper computer 10, so that a user is helped to quickly master the working principle of the power battery.

In practical application, when the upper computer 10 is used for setting the debugging parameters, the parameters can be designed artificially to be in fault, and the user can detect the parameter mastering condition of the power battery pack by removing the fault, so that missing and filling up are checked; the parameters of a certain part in the circuit can be changed or replaced by other parts, and as the modules are dispersedly detachable, a user can detach the modules and then independently detect the modules by using detection instruments such as a storage battery detector and the like; or the modules are integrally assembled and then are jointly adjusted and detected with the upper computer 10, so that abnormal parts are found out, and the working principle of the power battery is further mastered in the process of finding the abnormal parts.

Referring to fig. 2, in one embodiment, the battery terminals of the battery module include a positive terminal and a negative terminal, and the battery module 40 includes a battery pack, a total positive electron switch 42, a total negative electron switch 43;

the output end of the total negative electron switch 43 is connected with the negative terminal of the battery module 40, the input end of the total negative electron switch 43 is connected with the negative electrode of the battery pack, the positive electrode of the battery pack is connected with the input end of the total positive electron switch 42, and the output end of the total positive electron switch 42 is connected with the positive terminal of the battery module 40;

the controlled terminal of the total negative electronic switch 43 and the controlled terminal of the total negative electronic switch 43 are respectively connected with the control terminal of the battery management module 20.

In this embodiment, the battery management module 20 may have a plurality of control terminals, and the master positive electron switch 42 and the master negative electron switch 43 may be relays or contactors, and in this embodiment, may be normally open relays, it is understood that the relays have a small size, which is beneficial to saving space; in the present embodiment, it may be that the coil of the master positive-electron switch is connected to one control terminal of the battery management module 20, and the coil of the master negative-relay is connected to the other control terminal of the battery management module 20; the connection of the coil of the relay to the battery management module control terminal may be direct or via a driver circuit. The control terminals of the battery management module 20 control the overall positive and negative relays to be closed/opened.

The controlled ends of the master positive electron switch 42 and the master negative electron switch 43 are control signal access terminals of the battery module 40; the battery management module 20 may control charging and discharging of the battery by controlling the master positive electron switch 42 and the master negative electron switch 43, and in this embodiment, the battery information may include a plurality of parameters, such as a charging voltage, a discharging voltage, a voltage value of a single battery, a discharging temperature, a charging temperature, and the like; correspondingly, a user can set parameters such as a charge-discharge cut-off voltage threshold, a charge-discharge allowable current threshold, a pressure difference overlarge fault threshold, a temperature difference overlarge threshold and the like of the battery management module 20 by using the upper computer 10; the battery management module 20 compares the received battery information with the threshold values respectively, and when any parameter of the battery information exceeds the threshold value, the battery management module 20 may output a control signal to the controlled terminals of the total positive electron switch 42 and the total negative electron switch 43 of the battery module 40, so as to stop charging and discharging of the battery module 40, thereby achieving the purpose of charging and discharging protection; in actual operation, the national standard charging pile can be used for charging the power battery pack testing assembly, so that the charging and discharging protection function of the battery management module 20 is verified, and a user can understand the mechanism principle of the charging and discharging protection of the battery management module 20.

Referring to fig. 2, in an embodiment, the battery pack includes a first battery pack 411, a second battery pack 412, and a maintenance switch 413;

the negative electrode of the first battery pack 411 is the negative electrode of the battery pack; the positive electrode of the first battery pack 411 is connected with the input end of the maintenance switch 413, the output end of the maintenance switch 413 is connected with the negative electrode of the second battery pack 412, and the positive electrode of the second battery pack 412 is the positive electrode of the battery pack;

the first battery pack 411 is composed of a plurality of single batteries, and the plurality of single batteries are connected in series;

the second battery pack 412 is composed of a plurality of single batteries, and the plurality of single batteries are connected in series;

the collecting terminal of the battery management module 20 has a plurality of terminals, and the plurality of terminals are connected to the plurality of single batteries in the first battery pack 411 and the second battery pack 412 one by one.

In this embodiment, the maintenance switch 413 may be manually turned off when the battery module 40 fails, thereby disconnecting the power supply from the inside of the battery module 40.

The maintenance switch can be a toggle switch or an interlocking switch;

the number of the single batteries can be 10-30, such as 24; the single battery can be a lithium iron phosphate battery, the capacity of the single battery can be 10-30AH, such as 20AH, and the output voltage of the battery module can be 70-80V, such as 76V, and it can be understood that the technology of the single battery is relatively mature and is closer to that of a display power battery pack; secondly, a plurality of single batteries are arranged, and before assembly, a user can select single batteries with consistent or close internal resistance and standing voltage through detection equipment, such as an internal resistance tester; through this selection process, conventional parameters of a single battery are further grasped, and in this embodiment, the comparison parameters of the internal resistance tester may be set as: internal resistance of 1.1m omega +/-10 percent and voltage of 3.2V +/-10 percent. In practical applications, the battery module 40 may be provided with a plurality of temperature sensors uniformly distributed in the first battery pack 411 and the second battery pack 412 to detect the charging and discharging temperatures of the battery, an insulation detector and an insulation detection terminal 71 to detect the ground insulation value of the battery module 40, and the collection terminal is connected to the temperature sensors and the insulation detector to collect the voltage, the current, the battery temperature of the battery module 40 and the ground insulation value of the battery pack.

Referring to fig. 2, in an embodiment, the power battery pack testing assembly further includes a hall current sensor 44, an output end of the hall current sensor 44 is connected to an acquisition terminal of the battery management module 20, a detection end of the hall current sensor 44 is connected to the battery pack, and the hall current sensor 44 is configured to detect a current of the battery pack and output a corresponding current detection signal to the battery management module 20.

The hall current sensor 44 can test the total current of the battery module 40 and output the total current to the battery management module 20, the battery management module 20 processes the information and outputs the processed information to the upper computer 10, and the upper computer 10 can display the total current information through a display, so that a user can conveniently know the output current of the battery module 40.

Referring to fig. 2, in one embodiment, the control signal comprises a slow charge signal; the charging module 30 includes:

an ac charging port 31 for receiving ac power;

and the input end of the charger 32 is connected with the alternating current charging port 31, and the charger 32 is used for converting the alternating current into a first direct current.

The input end of the slow charging electronic switch 33 is connected with the output end of the charger 32, the output end of the slow charging electronic switch is connected with the battery module 40, and the controlled end of the slow charging electronic switch is connected with the battery management module 20; the battery management module 20 controls the slow charge electronic switch to be turned on according to the slow charge signal, so as to output the first direct current to the battery module 40.

The alternating current charging port can be a socket or an alternating current input seat, the input voltage of the alternating current charging port can be 200-250V alternating current voltage, and the frequency of the input alternating current can be 50HZ, namely the alternating current charging port is directly connected to the commercial power.

The slow charging electronic switch 33 may be a relay or a contactor, in this embodiment, a normally open relay may be selected, and a coil of the slow charging electronic switch 33 is connected with a control terminal of the battery management module 20, and may be connected with a driving circuit built by a triode; the moving contact of the slow charging electronic switch is connected with the output end of the charger 32, and the normally open terminal of the slow charging electronic switch is connected with the positive terminal of the battery module 40; the upper computer 10 outputs a slow signal to the battery management module 20 to control the battery management module 20 to open the slow charging electronic switch 33, in one embodiment, the charger 32 includes a communication module, the charger 32 has a communication terminal, to establish a communication connection with the battery management module 20, the battery management module 20 sends the battery information, the charge enable signal and the charge disable signal of the battery module 40 to the charger 32, the battery management module 20 communicates with the charger 32 synchronously, when the output voltage of the charger 32 is determined to be appropriate, a charging enable signal is sent to the charger 32, when the charger 32 receives the charging enable signal, the battery module 40 is charged, when the charging of the charger 32 is completed, the charging prohibition signal is sent to the charger 32, and when the charger 32 receives the charging permission prohibition signal, the charging of the battery module 40 is stopped, so as to control the charging and discharging of the battery module 40.

Referring to fig. 2, in an embodiment, the control signal includes a fast charge signal; the charging module 30 comprises a direct current charging port 34 and a quick charging electronic switch;

the direct current charging port 34 is used for accessing a second direct current;

the input end of the fast charging electronic switch is connected with the output end of the direct current charging port 34, the output end of the fast charging electronic switch is connected with the battery module 40, and the controlled end of the fast charging electronic switch is connected with the battery management module 20; the control signal output by the upper computer 10 is a quick charge signal, and the battery management module 20 controls the quick charge electronic switch to be turned on according to the quick charge signal so as to output the second direct current to the battery module 40.

The quick charging electronic switch can be a relay or a contactor; in the embodiment, a normally open relay can be selected; the coil end of the fast charging electronic switch is connected in series and is connected with the control terminal of the battery management module 20, and the connection can be a driving circuit connection built through a switching tube such as a triode; the input end and the output end of the quick charging electronic switch are respectively a movable contact and a fixed contact of the relay.

It can be understood that the direct current is often used as a fast charging source of the electric vehicle, and the technical scheme of the embodiment improves the charging speed by arranging the direct current charging port 34, that is, fast charging, so as to help a user to further understand the principle of fast charging of the vehicle battery.

Referring to fig. 2, in one embodiment, the load module 50 includes: the load module 50 includes: a load 51, a discharge electronic switch 52, a precharge electronic switch 53, and a precharge resistor 54;

one end of the pre-charge resistor 54 is connected to the output end of the pre-charge electronic switch 53, the other end of the pre-charge resistor 54 is connected to the discharge electronic switch 52, and the common end of the pre-charge resistor 54 and the discharge electronic switch 52 is connected to the input end of the load 51; the input end of the pre-charging electronic switch 53 is connected with the input end of the discharging electronic switch 52, and the common end of the pre-charging electronic switch 53 and the discharging electronic switch 52 is connected with the positive terminal of the battery module 40;

the controlled end of the pre-charge electronic switch 53 and the controlled end of the discharge electronic switch 52 are respectively connected with two control terminals of the battery management module 20;

wherein the pre-charge resistor 54 buffers the input voltage when the pre-charge electronic switch 53 is closed; the discharge electronic switch 52 is used for being turned on after the pre-charging is finished, and the pre-charging resistor is short-circuited while the power is supplied, so that the power consumption of the pre-charging resistor is reduced.

The pre-charge electronic switch 53 and the discharge electronic switch may be a relay and a contactor; this embodiment may be selected as a normally open relay.

The controlled end of the pre-charging electronic switch 53 and the controlled end of the discharging electronic switch are respectively connected with the control terminal of the battery management module 20, the battery management module 20 is in communication connection with the upper computer 10, and a user controls the pre-charging electronic switch 53 and the discharging electronic switch to be turned on/off through the upper computer 10; in actual operation, the upper computer 10 may be provided with a display interface, a user selects an electronic switch that outputs a control signal to be turned on through a mouse, a keyboard or a touch screen, and the upper computer 10 outputs a corresponding control signal to the battery management module 20 according to the selection of the user to turn on the corresponding electronic switch, so that the user can calculate the time required for precharging by himself or judge whether precharging is completed through data displayed by the upper computer 10, and then the upper computer 10 controls the precharging electronic switch 53 and the turning on/off of the discharging electronic switch to control the discharging process of the power battery, thereby helping the user further understand the process of supplying power to the load through the battery module 40.

Referring to fig. 2, in an embodiment, the battery terminals of the battery module include a positive terminal and a negative terminal, the power battery pack testing assembly further includes an external discharging module 60, and the external discharging module 60 includes: a first pair of external discharge electronic switches 61, a second pair of external discharge electronic switches 62, and an external discharge port 63;

wherein one end of the first pair of external discharge electronic switches 61 is connected to the positive terminal of the battery module 40, and the other end of the first pair of external discharge electronic switches 61 is connected to the positive electrode of the external discharge interface; one end of the second pair of external discharge electronic switches 62 is connected to the negative terminal of the battery module 40, and the other end of the second pair of external discharge electronic switches 62 is connected to the negative electrode of the external discharge interface;

the controlled terminals of the first pair of external discharge electronic switches 61 and the second pair of external discharge electronic switches 62 are respectively connected with two control terminals of the battery management module 20.

The external discharge electronic switch may be a relay or a contactor, and in this embodiment, may be a normally open relay, and a coil end of the normally open relay is connected to a control terminal of the battery management module 20; the moving contact and the normally open contact of the normally open relay are respectively the input end and the output end of the external discharge electronic switch;

according to the technical scheme of the embodiment, the external discharging module 60 is arranged, so that the power battery pack testing assembly can supply power to other technical platforms and serve as a power supply source for other practical training courses, for example, the power supply module supplies power to a motor driving system debugging and detecting platform, and therefore the power-on detection of the motor driving system is completed; in practical application, can be provided with pre-charge circuit and discharge circuit between external discharge port 63 and battery module 40, thereby guarantee to discharge port 63 output voltage can not damage with the motor drive system who is connected to external discharge port 63, in addition, load 51 is different with the motor drive system structure, thereby there is inherent difference, supply power for motor drive system through setting up external discharge port 63, also can help the user to understand the operating condition when power battery supplies power for motor drive system, be close actual electric automobile work more, thereby make the user can make more clear the principle that power battery supplied power for the motor.

Referring to fig. 2, in one embodiment, the battery management module 20 includes:

the slave module 21, the slave module 21 having a collection terminal and a communication terminal, the collection terminal having a plurality of line ends, each of which is connected to one of the single batteries of the battery module 40, the slave module 21 being configured to collect the battery information of each of the single batteries in real time and output the battery information through the communication terminal of the slave module 21;

the main module 22 is provided with a first communication terminal, a second communication terminal and a control terminal, the communication terminal of the main module 22 is connected with the upper computer 10, the second communication terminal is connected with the slave module 21, the control terminal of the main module 22 is connected with the battery module 40, and the main module 22 is used for controlling and outputting battery information of each single battery to the upper computer 10 so as to receive a control signal generated by the upper computer 10 according to the battery information and control the operation of the battery module 40.

The main module controls the work of each electronic switch and the charging module according to the control signal output by the upper computer, so that the work of the battery module is controlled. In practical applications, the battery management module 20 may further be provided with a balancing circuit to balance the output voltages of the single batteries, so as to prevent a single battery from being over-discharged and prolong the service life of the battery module 40; the master module 22 may be implemented by a control chip, the battery management module 20 further includes a power supply to supply power to the chips inside the master module 22 and the slave module 21, and the slave module 21 may be implemented by various combinations of detection devices.

Referring to fig. 2, in an embodiment, the power battery pack testing assembly further includes an adhesion detection circuit having a plurality of detection ports and an adhesion information output port; the adhesion information output port is connected with the battery management module 20, and the plurality of detection ports can be respectively a total positive adhesion detection end 72, a quick charge adhesion detection end 73, a slow charge adhesion detection end 74, a total negative adhesion detection end 75, a discharge adhesion detection end 76 and a pre-charge adhesion detection end, and are respectively connected with the output end of the total positive electron switch 42, the output end of the quick charge electronic switch, the output end of the slow charge electronic switch, the output end of the total negative electron switch 43, the output end of the discharge electronic switch 52 and the output end of the pre-charge electronic switch 53 in a one-to-one correspondence manner; and the battery management module 20 is used for detecting whether the electronic switches are adhered or not and outputting the adhesion detection result to the battery management module 20, and the battery management module 20 outputs the detection result to the upper computer 10 through a communication line.

The utility model also provides a practical training platform, which comprises an upper computer 10 and the power battery pack testing component; this power battery package test assembly's concrete structure refers to above-mentioned embodiment, because this real standard platform has adopted power battery package test assembly, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer repeated here one by one.

The upper computer 10 may interact with a user through an external device such as a display or a mouse.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. The utility model provides a power battery package test assembly for instruct the platform in fact, instruct the platform in fact and include the host computer, its characterized in that, power battery package test assembly includes:

the base is provided with a plurality of mounting grooves;

2. The power pack test assembly of claim 1, wherein the battery terminals of the battery module comprise a positive terminal and a negative terminal, the battery module comprising a battery pack, a total positive electron switch, a total negative electron switch;

3. The power pack testing assembly of claim 2, wherein the battery pack includes a first battery pack, a second battery pack, and a service switch;

4. The power battery pack testing assembly of claim 2, further comprising a hall current sensor, wherein an output terminal of the hall current sensor is connected to the battery management module collection terminal, a detection terminal of the hall current sensor is connected to the battery pack, and the hall current sensor is configured to detect a current of the battery pack and output a corresponding current detection signal to the battery management module.

5. The power pack testing assembly of claim 1, wherein the control signal comprises a slow charge signal; the charging module includes:

6. The power battery pack testing assembly of claim 1, wherein the control signal comprises a fast charge signal; the charging module comprises a direct current charging port and a quick charging electronic switch;

the direct current charging port is used for accessing a second direct current;

7. The power battery pack testing assembly of claim 1, wherein the load module comprises: the device comprises a load piece, a discharge electronic switch, a pre-charge electronic switch and a pre-charge resistor;

8. The power pack testing assembly of claim 1, wherein the battery terminals of the battery module include a positive terminal and a negative terminal, the power pack testing assembly further comprising an external discharge module, the external discharge module comprising: a first pair of external discharge electronic switches, a second pair of external discharge electronic switches, and an external discharge port;

one end of the first pair of external discharge electronic switches is connected with the positive terminal of the battery module, and the other end of the first pair of external discharge electronic switches is connected with the positive electrode of the external discharge port; one end of the second pair of external discharge electronic switches is connected with the negative terminal of the battery module, and the other end of the second pair of external discharge electronic switches is connected with the negative electrode of the external discharge port;

9. The power battery pack testing assembly of any of claims 1-8, wherein the battery management module comprises:

10. A practical training platform, which is characterized by comprising an upper computer and the power battery pack testing assembly according to any one of claims 1 to 9.