CN219065633U

CN219065633U - Battery simulation device and test system

Info

Publication number: CN219065633U
Application number: CN202223438080.8U
Authority: CN
Inventors: 邱书科; 仇成丰
Original assignee: Shuangyili Ningbo Battery Co ltd
Current assignee: Shuangyili Ningbo Battery Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-23
Anticipated expiration: 2032-12-20

Abstract

The utility model provides a simulated battery device and a test system, and relates to the field of batteries. The device comprises a power end, a passive equalization circuit, an active equalization circuit, a switching unit and an acquisition end, wherein the power end is used for being connected with a preset power supply, the power end is connected with the input end of the passive equalization circuit, the output end of the passive equalization circuit is connected with the first connection end of the switching unit, the third connection end of the switching unit is connected with the acquisition end, the acquisition end is used for being connected with a battery management system to be tested, the passive equalization function of the battery management system to be tested is tested when the first connection end and the third connection end are connected, the active equalization circuit is connected with the second connection end of the switching unit, the active equalization function of the battery management system to be tested is tested when the second connection end and the third connection end are connected, the cost of a structure and electronic components in the simulated battery device is low, and meanwhile, the testing process of the battery management system can be controlled, and the safety in the testing process is controllable.

Description

Battery simulation device and test system

Technical Field

The utility model relates to the technical field of batteries, in particular to a simulated battery device and a test system.

Background

The battery management system (Battery Management System, BMS) in the energy storage system is a system for monitoring and controlling the battery, and has important significance for the use safety of the battery, so that after the development of the equipment of the battery management system is finished and before the mass production, the functions, the performances, the precision and the like of the equipment of the battery management system are required to be tested so as to ensure that the equipment of the battery management system meets relevant requirements, and the equipment of the battery management system can be produced in mass and put into the market after the test is successful.

Since the device of the battery management system is a management device for a battery, it is generally necessary to set a battery in a test environment for testing the device of the battery management system, so that after the device of the battery management system is connected to the battery, the device of the battery management system can test related requirements such as a battery management function thereof.

In the prior art, a test environment is usually built by connecting real battery cells in series to form a battery, however, the service life of the real battery cells is limited, the hardware cost is higher, and meanwhile, the safety of equipment of a battery management system is uncontrollable in the test process due to the real battery cells.

Disclosure of Invention

The utility model aims to provide a simulated battery device and a test system, which are used for solving the technical problems of higher cost and uncontrollable safety when a test environment is built by using a battery with a real battery core in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the utility model is as follows:

in a first aspect, an embodiment of the present utility model provides an analog battery device, including: the device comprises a power supply end, a passive equalization circuit, an active equalization circuit, a switch unit and a collection end;

the power supply end is used for connecting a preset power supply, the power supply end is also connected with the input end of the passive equalization circuit, the output end of the passive equalization circuit is connected with the first connecting end of the switch unit, the third connecting end of the switch unit is connected with the acquisition end, and the acquisition end is used for connecting a battery management system to be tested so as to test the passive equalization function of the battery management system to be tested when the first connecting end and the third connecting end are connected;

the active equalization circuit is connected with the second connecting end of the switch unit, so that when the second connecting end and the third connecting end are connected, the active equalization function of the battery management system to be tested is tested.

Optionally, the passive equalization circuit includes: the LED comprises a direct current converter, a first resistor and a first LED;

the input end of the direct current converter is connected with the power end, the positive output end of the direct current converter is connected with the anode of the first light emitting diode through the first resistor, and the cathode of the first light emitting diode is connected with the first connecting end.

Optionally, the passive equalization circuit further comprises: a second resistor and a voltage regulator;

the positive output end of the direct current converter is connected with the input end of the voltage stabilizer through the second resistor, the cathode of the first light emitting diode is connected with the input end of the voltage stabilizer, and the output end of the voltage stabilizer is connected with the first connecting end.

Optionally, the passive equalization circuit further comprises: the third resistor, the fourth resistor and the fifth resistor, wherein the fourth resistor is an adjustable resistor;

the regulating end of the voltage stabilizer is connected with the output end of the voltage stabilizer through the third resistor, and the regulating end of the voltage stabilizer is also connected with the negative output end of the direct current converter through the fourth resistor and the fifth resistor in sequence.

Optionally, the passive equalization circuit further comprises: the output end of the voltage stabilizer is connected with the anode of the second light-emitting diode through the sixth resistor, and the cathode of the second light-emitting diode is connected with the negative output end of the direct-current converter.

Optionally, the active equalization circuit includes: a seventh resistor, a third light emitting diode, and an eighth resistor;

positive and negative connection ends in the second connection end are respectively connected with two ends of the eighth resistor, and after the seventh resistor and the third light emitting diode are connected in series, the seventh resistor and the third light emitting diode are connected in parallel with two ends of the eighth resistor.

Optionally, the switch unit is a double pole double throw switch, and the switch unit includes: a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin;

the first connection terminal includes: the third pin and the fourth pin, and the second connection terminal includes: the fifth pin and the sixth pin, and the third connection terminal includes: the first pin and the second pin;

the first pin is connected with the third pin, and when the second pin is connected with the fourth pin, the first connecting end is connected with the third connecting end;

and when the first pin is communicated with the fifth pin and the second pin is communicated with the sixth pin, the second connecting end is communicated with the third connecting end.

Optionally, the control end of the switch unit is used for connecting with an external control device.

In a second aspect, an embodiment of the present utility model provides a test system, including: a simulated battery device and a battery management system to be tested, the simulated battery device being the simulated battery device of any one of the first aspects;

the power end of the simulated battery device is used for being connected with a preset power supply, and the acquisition end of the simulated battery device is connected with the battery management system to be tested.

Optionally, if the number of the analog battery devices is at least two, the target power supply terminals after the at least two analog battery devices are electrically connected are used for connecting the preset power supply, and the target collection terminals after the at least two analog battery devices are electrically connected are used for connecting the battery management system to be tested.

The beneficial effects of the utility model are as follows:

the utility model provides a simulated battery device and a test system, comprising: the battery management system comprises a power end, a passive equalization circuit, an active equalization circuit, a switching unit and a collecting end, wherein the power end is used for being connected with a preset power supply, the power end is also connected with the input end of the passive equalization circuit, the output end of the passive equalization circuit is connected with the first connecting end of the switching unit, the third connecting end of the switching unit is connected with the collecting end, the collecting end is used for being connected with a battery management system to be tested, when the first connecting end and the third connecting end are connected, the passive equalization function of the battery management system to be tested is tested, the active equalization circuit is connected with the second connecting end of the switching unit, when the second connecting end and the third connecting end are connected, the active equalization function of the battery management system to be tested is tested, the cost of the structure and electronic components in the analog battery device is lower, compared with a battery formed by connecting the existing real battery cells in series, the hardware cost is reduced, meanwhile, the testing process of the battery management system can be controlled in real time through controlling the connection or disconnection of the first connecting end and the second connecting end in the switching unit, and the third connecting end in the testing process, and the safety in the testing process can be ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an analog battery device according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of another battery simulating device according to an embodiment of the utility model;

fig. 3 is a schematic structural diagram of another battery simulating device according to an embodiment of the utility model;

fig. 4 is a schematic structural diagram of another battery simulating device according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of another battery simulating device according to an embodiment of the utility model;

fig. 6 is a schematic structural diagram of another battery simulating device according to an embodiment of the utility model;

fig. 7 is a schematic structural diagram of another battery simulating device according to an embodiment of the utility model;

fig. 8 is a schematic structural diagram of another battery simulating device according to an embodiment of the utility model;

FIG. 9 is a schematic diagram of a test system according to an embodiment of the present utility model;

FIG. 10 is a schematic diagram of another test system according to an embodiment of the present utility model;

fig. 11 is a schematic structural diagram of another test system according to an embodiment of the present utility model.

Icon: the power supply terminal 100, the passive equalization circuit 200, the active equalization circuit 300, the switching unit 400, the collecting terminal 500, the first connecting terminal 410, the second connecting terminal 420, the third connecting terminal 430, the dc converter 201, the first resistor 202, the first light emitting diode 203, the second resistor 204, the voltage stabilizer 205, the third resistor 206, the fourth resistor 207, the fifth resistor 208, the sixth resistor 209, the second light emitting diode 210, the seventh resistor 301, the third light emitting diode 302, the eighth resistor 303, the first pin 431, the second pin 432, the third pin 413, the fourth pin 414, the fifth pin 425, the sixth pin 426, the external control device 600, the analog battery device 10, the battery management system to be tested 20, and the preset power supply 30.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In order to solve the technical problems of higher cost and uncontrollable safety when a battery with a real battery core is used for building a test environment, the utility model provides the simulated battery device and the test system.

An analog battery device provided by an embodiment of the present utility model is explained below in conjunction with a plurality of specific examples. Fig. 1 is a schematic structural diagram of an analog battery device according to an embodiment of the present utility model, as shown in fig. 1, the analog battery device includes: a power source terminal 100, a passive equalization circuit 200, an active equalization circuit 300, a switch unit 400, and a collection terminal 500.

The power terminal 100 is used for connecting to a preset power source. The preset power supply may be a 12V switching power supply, or may be another power supply, which is not particularly limited in the embodiment of the present utility model.

The power supply terminal 100 is further connected to an input terminal of the passive equalization circuit 200, the preset power supply transmits electric energy to the input terminal of the passive equalization circuit 200 through the power supply terminal 100, an output terminal of the passive equalization circuit 200 is connected to the first connection terminal 410 of the switch unit 400, and the passive equalization circuit 200 outputs electric energy to the first connection terminal 410 of the switch unit 400 after correspondingly processing the input electric energy.

Alternatively, in the embodiment of the present utility model, the corresponding processing of the electric energy may be voltage reduction, voltage stabilization, and the like.

The third connection terminal 430 of the switch unit 400 is connected to the collection terminal 500, and the collection terminal 500 is used for connecting to the battery management system to be tested.

When the first connection end 410 and the third connection end 430 of the switch unit 400 are turned on, the electric energy output by the passive equalization circuit 200 sequentially passes through the first connection end 410 and the third connection end 430 of the switch unit 400, flows into the collection end 500, and then flows into the battery management system to be tested, so that the battery management system to be tested can test the passive equalization function according to the electric energy flowing into the collection end 500.

In the embodiment of the present utility model, the power supply terminal 100 and the passive equalization circuit 200 form a discharging process, which can be understood as discharging of the battery, wherein, by controlling the on-off of the first connection terminal 410 and the third connection terminal 430 of the switch unit 400, whether the discharged electric energy flows into the battery management system to be tested can be controlled, so as to control the test of the passive equalization function of the battery management system to be tested in real time.

The active equalization circuit 300 is connected to the second connection terminal of the switching unit 400, wherein the active equalization circuit 300 can absorb the electric energy transmitted from the switching unit 400, forming a charging process, which can be understood as charging the battery.

When the first connection terminal 410 and the third connection terminal 430 of the switching unit 400 are disconnected and the second connection terminal 420 and the third connection terminal 430 of the switching unit 400 are connected, the collecting terminal 500 flows in the electric energy, and flows in the active equalization circuit 300 sequentially through the third connection terminal 430 and the second connection terminal 420 of the switching unit 400, and the active equalization circuit 300 absorbs the flowing electric energy, so that the battery management system to be tested can test the active equalization function according to the electric energy input to the collecting terminal 500.

In the embodiment of the present utility model, by controlling the on/off of the second connection terminal 420 and the third connection terminal 430 of the switch unit 400, whether the charging electric energy flows into the active equalization circuit 300 can be controlled, so as to control the test of the active equalization function of the battery management system to be tested in real time.

The simulated battery device provided by the utility model can test the passive equalization function and the active equalization function of the battery management system to be tested, has lower cost of the structure and the electronic components in the simulated battery device, reduces hardware cost compared with the battery formed by the prior real battery cells connected in series, and simultaneously can control the testing process of the battery management system in real time by controlling the connection or disconnection of the first connecting end, the second connecting end and the third connecting end in the switch unit, so that the safety in the testing process is controllable, and the safety in the testing process is ensured. In addition, the peripheral wiring (the power end is connected with a power supply, the acquisition end is used as a voltage acquisition terminal) of the analog battery device is convenient, and the moving convenience is high.

Further, on the basis of the structure of an analog battery device shown in fig. 1, an analog battery device is further explained by way of a possible implementation example of a passive equalization circuit. Optionally, fig. 2 is a schematic structural diagram of another analog battery device according to an embodiment of the present utility model, and as shown in fig. 2, a passive equalization circuit 200 includes: a dc converter 201, a first resistor 202 and a first led 203.

The input terminal of the dc converter 201 is connected to the power supply terminal 100. In the embodiment of the present utility model, the dc converter 201 is a buck dc converter, and if the preset power source connected to the power source terminal 100 is a 12V switching power source, the dc converter 201 can convert the 12V voltage of the electric energy input from the power source terminal 100 into an isolated stable 9V voltage. Therefore, the positive output terminal of the dc converter 201 outputs the converted 9V voltage electric power.

In the embodiment of the present utility model, the input end of the dc converter 201, which is not connected to the power supply terminal 100, is grounded, and the negative output end of the corresponding dc converter 201 is connected to the switch unit 400, so as to provide the negative collecting end of the collecting end 500 of the analog battery device, i.e. the negative electrode of the analog single cell.

The positive output terminal of the dc converter 201 is connected to the anode of the first led 203 through the first resistor 202, and the cathode of the first led 203 is connected to the first connection terminal 410.

The first resistor 202 is connected in series with the first light emitting diode 203 to perform voltage division and current limiting functions, so as to protect the first light emitting diode 203.

If the positive output terminal of the dc converter 201 outputs the electrical energy, the first led 203 is turned on and emits light, so that the first led 203 is used to indicate that the electrical energy exists in the passive equalization circuit 200, so that a technician can determine whether the analog battery device is in a discharging state by observing the light emitting state of the first led 203, that is, the first led 203 can be used for indicating a discharging current, and at this time, the analog battery device is an analog battery with a current indication.

In the embodiment of the present utility model, when the first connection end 410 and the third connection end 430 of the switch unit 400 are turned on, the current is switched into the passive equalization loop, and is output through the positive output end of the dc converter 201, the first resistor 202 and the first light emitting diode 203 connected in series make the first light emitting diode 203 conduct forward and emit light, and the positive collection end b1+ of the collection end 500 enters the discharge resistor in the battery management system, so that the current of the passive equalization loop is about 100mA, and then flows back to the negative output end of the dc converter 201 through the negative collection end B1-of the collection end 500. Wherein the illumination by the first led 203 may indicate that the current channel has been turned on for passive equalization.

In the embodiment of the present utility model, the positive output end of the dc converter 201 is sequentially connected to the first connection end 410 through the first resistor 202 and the first light emitting diode 203, so as to provide a positive collecting end of the collecting end 500 of the analog battery device, that is, a positive electrode of the analog single cell.

Alternatively, the first led 203 is a patch led, but may be other leds, which is not limited in the embodiment of the present utility model.

The utility model provides an analog battery device, a passive equalization circuit includes: the device comprises a direct current converter, a first resistor and a first light-emitting diode, wherein the input end of the direct current converter is connected with a power supply end, the positive output end of the direct current converter is connected with the anode of the first light-emitting diode through the first resistor, the cathode of the first light-emitting diode is connected with the first connecting end, the lighting state of the first light-emitting diode can be used for indicating whether the analog battery device is started to be balanced passively, and a tester can observe the starting condition of passive balancing or discharging visually.

Further, on the basis of the structure of an analog battery device shown in fig. 2, an analog battery device is further explained by way of a possible implementation example of a passive equalization circuit. Optionally, fig. 3 is a schematic structural diagram of another analog battery device according to an embodiment of the present utility model, and as shown in fig. 3, a passive equalization circuit 200 includes: a second resistor 204 and a voltage regulator 205.

Alternatively, the voltage regulator 205 is a linear voltage regulator.

The positive output terminal of the dc converter 201 is connected to the input terminal of the voltage regulator 205 through the second resistor 204, and the cathode of the first light emitting diode 203 is connected to the input terminal of the voltage regulator 205. At this time, the first light emitting diode 203 is connected in parallel with the second resistor 204 after the first resistor 202 is connected in series.

Through the positive output end of the dc converter 201, a voltage drop is generated through the second resistor 204 connected in series, and the first resistor 202 and the first led 203 connected in parallel to the second resistor 204 are turned on in the forward direction, so that the first led 203 emits light.

The voltage regulator 205 can regulate and stabilize the voltage in the circuit to realize constant voltage output. In the embodiment of the present utility model, the dc converter 201 converts the voltage of 12V of the electric energy input from the power supply terminal 100 into the isolated stable 9V voltage, and then transmits the voltage to the input terminal of the voltage regulator 205 through the second resistor 204, and the voltage regulator 205 further adjusts the voltage so that the voltage of the electric energy output from the output terminal of the voltage regulator 205 is constant and about 4V.

The output end of the voltage stabilizer 205 is connected to the first connection end 410, and if the first connection end 410 is connected to the third connection end 430, the electric energy with constant voltage output from the output end of the voltage stabilizer 205 flows into the battery management system sequentially through the first connection end 410 and the third connection end 430.

The utility model provides an analog battery device, the passive equalization circuit also comprises: the positive output end of the direct current converter is connected with the input end of the voltage stabilizer through the second resistor, the cathode of the first light emitting diode is connected with the input end of the voltage stabilizer, the output end of the voltage stabilizer is connected with the first connecting end, and the constant voltage of the output electric energy of the passive equalization circuit is realized through the voltage stabilizer.

Further, on the basis of the structure of an analog battery device shown in fig. 3, an analog battery device is further explained by way of a possible implementation example of a passive equalization circuit. Optionally, fig. 4 is a schematic structural diagram of another analog battery device according to an embodiment of the present utility model, and as shown in fig. 4, the passive equalization circuit 40 further includes: a third resistor 206, a fourth resistor 207, and a fifth resistor 208. The fourth resistor 207 is an adjustable resistor.

Alternatively, the fourth resistor 207 may also be referred to as a precision adjustable potentiometer.

The regulating terminal (ADJ terminal in the figure) of the voltage regulator 205 is connected to the output terminal of the voltage regulator 205 through a third resistor 206, and the regulating terminal of the voltage regulator 205 is also connected to the negative output terminal of the dc converter 201 through a fourth resistor 207 and a fifth resistor 208 in sequence.

By adjusting the resistance of the fourth resistor 207, the voltage of the electric energy at the output end of the voltage stabilizer 205 can be adjusted, so that the output voltage of the passive equalization circuit 40 can be flexibly adjusted.

If the resistance of the fourth resistor 207 is adjusted to be maximum or minimum, in order to ensure the safety of the passive equalization circuit 40, a third resistor 206 is connected to the adjustment terminal of the fourth resistor 207 and a fifth resistor 208 is connected in series when the fourth resistor is connected to the negative output terminal of the dc converter 201.

In the embodiment of the utility model, the voltage stabilizer 205, the third resistor 206, the fourth resistor 207 and the fifth resistor 208 form a voltage stabilizer with adjustable voltage, so that the analog battery device can output electric energy with different voltages during passive equalization, further the test of the battery management system to be tested is more comprehensive, and meanwhile, compared with the conventional battery with fixed voltage formed by connecting the true battery cells in series, the use flexibility is improved.

Further, an analog battery device is further explained by way of possible implementation examples of the passive equalization circuit, on the basis of the structure of the analog battery device shown in fig. 3 or fig. 4. Optionally, fig. 5 is a schematic structural diagram of another analog battery device according to an embodiment of the present utility model, and as shown in fig. 5, the passive equalization circuit 40 further includes: a sixth resistor 209 and a second light emitting diode 210.

The output end of the voltage stabilizer 205 is connected to the anode of the second light emitting diode 210 through the sixth resistor 209, and the cathode of the second light emitting diode 210 is connected to the negative output end of the dc converter 201.

The sixth resistor 209 is connected in series with the second light emitting diode 210 to perform the voltage dividing and current limiting functions, so as to protect the second light emitting diode 210.

If the output end of the passive equalization circuit 200 outputs electric energy, i.e. the output end of the voltage stabilizer 205 outputs electric energy, the second light emitting diode 210 is turned on and emits light, and therefore, the second light emitting diode 210 is used for detecting the normal or failure state of the passive equalization circuit 200, so that a technician can determine whether the passive equalization circuit 200 fails by observing the light emitting state of the second light emitting diode 210.

The utility model provides an analog battery device, the passive equalization circuit also comprises: the output end of the voltage stabilizer is connected with the anode of the second light-emitting diode through the sixth resistor, the cathode of the second light-emitting diode is connected with the negative output end of the direct-current converter, the fault state or the normal state of the passive equalization circuit can be indicated through the light-emitting state of the second light-emitting diode, and a tester can observe the passive equalization state through naked eyes in a visual mode conveniently.

Further, an analog battery device is further explained by way of possible implementation examples of the active equalization circuit, on the basis of the structure of the analog battery device shown in fig. 1 or fig. 5. Optionally, fig. 6 is a schematic structural diagram of another analog battery device according to an embodiment of the present utility model, and as shown in fig. 6, an active equalization circuit 300 includes: a seventh resistor 301, a third light emitting diode 302 and an eighth resistor 303.

Positive and negative connection ends in the second connection end 420 are respectively connected with two ends of the eighth resistor 303, so that current power input by the acquisition end 500 can be absorbed through the eighth resistor 303, and a charging function of the analog battery device is realized.

In the embodiment of the present utility model, when the second connection terminal 420 and the third connection terminal of the switch unit 400 are turned on, the current in the active equalization loop is 2A of the current output by the constant current source in the battery management system, and the current is transmitted to the eighth resistor 303 through the positive collection terminal b1+ of the collection terminal 500 and then flows back to the negative collection terminal B1-of the collection terminal 500.

Optionally, the eighth resistor 303 is a ceramic cement resistor, for example, a ceramic cement resistor of 1.5 ohm and 10 watts, and of course, other resistors that absorb current power may be used, which is not specifically limited in the embodiments of the present application.

The seventh resistor 301 and the third light emitting diode 302 are connected in series and then connected in parallel to both ends of the eighth resistor 303. The seventh resistor 301 plays a role in voltage division and current limiting, and protects the third light emitting diode 302.

If the current is transmitted to the active equalization circuit 300 through the positive collecting terminal b1+ of the collecting terminal 500, a voltage drop is generated, and the third light emitting diode 302 is turned on and emits light, so that the third light emitting diode 302 is used to indicate that the active equalization circuit 300 has electric energy, so that a technician can determine whether the analog battery device is in a charging state by observing the light emitting state of the third light emitting diode 302, that is, the first light emitting diode 203 can be used for indicating the charging current.

The utility model provides an analog battery device, an active equalization circuit includes: the positive and negative connecting ends in the second connecting end are respectively connected with the two ends of the eighth resistor, the seventh resistor and the third light emitting diode are connected in series and then connected in parallel with the two ends of the eighth resistor, and the luminous state of the third light emitting diode can be used for indicating whether the simulated battery device starts active equalization or not so as to facilitate a tester to visually observe the starting condition of active equalization or charging through naked eyes.

Further, on the basis of the structure of an analog battery device shown in fig. 1 or 6 described above, an analog battery device is further explained by way of possible implementation examples of the switching unit. Alternatively, fig. 7 is a schematic structural diagram of another analog battery device according to an embodiment of the present utility model, and as shown in fig. 7, the switch unit 400 is a double pole double throw switch.

The switching unit 400 includes: first pin 431, second pin 432, third pin 413, fourth pin 414, fifth pin 425, sixth pin 426. Wherein the first connection end 410 includes: third pin 413 and fourth pin 414; the second connection terminal 420 includes: fifth pin 425 and sixth pin 426; the third connection terminal 430 includes: a first pin 431 and a second pin 432.

When the first pin 431 and the third pin 413 are turned on and the second pin 432 and the fourth pin 414 are turned on, the first connection terminal 410 and the third connection terminal 430 are turned on, and the analog battery device is in a passive balanced state.

When the first pin 431 and the fifth pin 425 are turned on and the second pin 432 and the sixth pin 426 are turned on, the second connection terminal 420 and the third connection terminal 430 are turned on, and the analog battery device is in an active equalization state.

The control terminal of the switching unit 400 is used to connect the external control device 600, and the first connection terminal 410 and the third connection terminal 430 may be controlled to be turned on or the second connection terminal 420 and the third connection terminal 430 may be controlled to be turned on by the external control device 600 to perform interlocking and switching of passive equalization and active equalization.

If the external control device 600 controls the switching unit 400 to be in an off state, the connection between the analog battery device and the battery management system is in an off state.

Alternatively, the interlocking and switching of the passive equalization and the active equalization may also be performed by manually operating the switching unit 400 by a person, or the connection between the analog battery device and the battery management system may be disconnected.

The utility model provides an analog battery device, a switch unit is a double-pole double-throw switch, and the switch unit comprises: first pin, second pin, third pin, fourth pin, fifth pin, sixth pin, first link includes: third pin and fourth pin, the second link includes: fifth pin and sixth pin, the third link includes: a first pin and a second pin; the first pin is communicated with the third pin, and when the second pin is communicated with the fourth pin, the first connecting end is communicated with the third connecting end; when the first pin is connected with the fifth pin, and the second pin is connected with the sixth pin, the second connecting end is connected with the third connecting end, and the control end of the switch unit is used for connecting external control equipment, so that interlocking and switching of passive equalization and active equalization can be controlled by controlling the switch unit, and the connection state between the analog battery device and the battery management system can be controlled.

Further, on the basis of the structure of an analog battery device shown in fig. 7, an analog battery device is further explained by way of a possible implementation example of a passive equalization circuit. Optionally, fig. 8 is a schematic structural diagram of another analog battery device according to an embodiment of the present utility model, and as shown in fig. 8, the passive equalization circuit further includes a plurality of capacitors for filtering.

The utility model further provides a test system based on the embodiment of the simulated battery device shown in the above-mentioned fig. 1-8. Optionally, fig. 9 is a schematic structural diagram of a test system according to an embodiment of the present utility model, as shown in fig. 9, where the test system includes: the battery device 10 is simulated and the battery management system 20 is to be tested.

The power supply terminal of the analog battery device 10 is used for being connected with a preset power supply 30, the passive equalization function can be realized through the preset power supply 30 and the passive equalization circuit 200 in the analog battery device 10, and the active equalization function can be realized through the active equalization circuit 300 in the analog battery device 10.

The collection end of the simulated battery device 10 is connected with the battery management system 20 to be tested, the passive equalization circuit 200 and the preset power supply 30 in the simulated battery device 10 can be used for testing the passive equalization function of the battery management system 20 to be tested, and the active equalization circuit 300 in the simulated battery device 10 can be used for testing the passive equalization function of the battery management system 20 to be tested.

The utility model provides a test system, comprising: the battery management system to be tested is connected with the acquisition end of the simulated battery device, and the test of the battery management system to be tested is realized.

Further, a test system is further explained by simulating a possible implementation example of the battery device on the basis of the structure of the test system shown in fig. 9. Optionally, fig. 10 is a schematic structural diagram of another test system according to the embodiment of the present utility model, as shown in fig. 10, if the number of the analog battery devices 10 is at least two, the target power terminals after the at least two analog battery devices 10 are electrically connected are used to connect to the preset power source 30, and the target collecting terminals after the at least two analog battery devices 10 are electrically connected are used to connect to the battery management system 20 to be tested.

The simulated battery device 10 provided by the present utility model is a simulated single battery, and in practical application, a battery pack, that is, a battery pack formed by a plurality of single batteries, may be used, and the number of the simulated battery devices in the battery pack may be at least two.

The electrical connection of at least two analog battery devices 10 may be parallel. For example, after the power terminals of at least two analog battery devices 10 are connected in parallel, one target power terminal through which the preset power source 30 is connected may be formed; the positive collecting ends and the negative collecting ends of the collecting ends of at least two simulated battery devices 10 are connected in parallel to form a target positive collecting end and a target negative collecting end, the target collecting ends are formed, and the battery management system to be tested is connected through the target collecting ends.

Fig. 11 is a schematic structural diagram of another test system according to an embodiment of the present utility model, and as shown in fig. 11, at least two analog battery devices 10 may be electrically connected in series. Illustratively, the target power terminal is the power terminal of the first analog battery device 10 at this time, and the preset power source 30 is connected through the target power terminal; the positive collecting end of the first analog battery device 10 is used as a target positive collecting end, the negative collecting end of the first analog battery device 10 is connected with the positive collecting end of the next analog battery device 10, and the like, the negative collecting end of the last analog battery device is used as a target negative collecting end, and at the moment, the target positive collecting end and the target negative collecting end form the target collecting end which is connected with the battery management system to be tested. Where there are n analog battery devices 10 in total, the collection terminals of the first analog battery device 10 may be denoted as b1+ and B1-, the collection terminals of the second analog battery device 10 may be denoted as b2+ and B2-, and so on, and the collection terminals of the last analog battery device 10, i.e., the nth analog battery device 10, may be denoted as bn+ and Bn-.

Alternatively, the connection relationship of at least two analog battery devices 10 may also be other connection manners, such as a combination of serial connection and parallel connection, which is not particularly limited in the embodiment of the present application.

According to the test system provided by the utility model, if the number of the simulated battery devices is at least two, the target power ends of the at least two simulated battery devices after being electrically connected are used for being connected with the preset power supply, the target collecting ends of the at least two simulated battery devices after being electrically connected are used for being connected with the battery management system to be tested, and the battery pack is formed after the at least two simulated battery devices are electrically connected, so that the battery management system to be tested is connected with the battery management system to be tested through the battery pack, and the test is performed on the battery management system to be tested.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but many modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A simulated battery device, the simulated battery device comprising: the device comprises a power supply end, a passive equalization circuit, an active equalization circuit, a switch unit and a collection end;

2. The analog battery device of claim 1, wherein the passive equalization circuit comprises: the LED comprises a direct current converter, a first resistor and a first LED;

3. The analog battery device of claim 2, wherein the passive equalization circuit further comprises: a second resistor and a voltage regulator;

4. The analog battery device of claim 3, wherein the passive equalization circuit further comprises: the third resistor, the fourth resistor and the fifth resistor, wherein the fourth resistor is an adjustable resistor;

5. The analog battery device of claim 3, wherein the passive equalization circuit further comprises: the output end of the voltage stabilizer is connected with the anode of the second light-emitting diode through the sixth resistor, and the cathode of the second light-emitting diode is connected with the negative output end of the direct-current converter.

6. The analog battery device of claim 1, wherein the active equalization circuit comprises: a seventh resistor, a third light emitting diode, and an eighth resistor;

7. The analog battery device according to claim 1, wherein the switching unit is a double pole double throw switch, the switching unit comprising: a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin;

8. The analog battery device according to claim 1, wherein a control terminal of the switching unit is used for connection to an external control apparatus.

9. A test system, comprising: a simulated battery device and a battery management system to be tested, the simulated battery device being as claimed in any one of the preceding claims 1-8;

10. The test system of claim 9, wherein if the number of the analog battery devices is at least two, the target power terminals after the at least two analog battery devices are electrically connected are used for connecting the preset power source, and the target collection terminals after the at least two analog battery devices are electrically connected are used for connecting the battery management system to be tested.