CN209927941U

CN209927941U - Device for simulating series connection of multiple single batteries to provide battery management system test

Info

Publication number: CN209927941U
Application number: CN201920128211.1U
Authority: CN
Inventors: 万自信; 苏彦铭
Original assignee: Wuxi Zhiji Kinetic Energy Technology Co Ltd
Current assignee: Wuxi Zhiji Kinetic Energy Technology Co Ltd
Priority date: 2019-01-25
Filing date: 2019-01-25
Publication date: 2020-01-10
Anticipated expiration: 2029-01-25

Abstract

The utility model relates to a simulation many monomer batteries establish ties and provide device of battery management system test, including simulation battery circuit, analog temperature circuit, can simulate the sampling of multichannel battery, under the condition that is not more than the biggest cluster number, the sampling cluster number can manual regulation, has avoided using in the battery series test process, the short circuit problem that probably appears, can simulate temperature sensor's sampling, and the change of analog temperature, used variable resistance, the resistance that can adjust resistance in succession, the voltage variation of simulation battery, the volume ratio of device is little when using battery test.

Description

Device for simulating series connection of multiple single batteries to provide battery management system test

Technical Field

The utility model relates to a device that simulation many battery cells establish ties and provide battery management system test belongs to new forms of energy electric automobile field.

Background

Since the 21 st century, the problem of environmental pollution has become more serious, and in order to improve the environment and enhance the utilization efficiency of energy, all over the world, automobile manufacturers and governments around the world are making development plans for electric automobiles, and the most critical technology on electric automobiles is three-electric system-motor, electric control and battery, the most critical of them is the battery, and for the safety aspect of the battery, the critical is the battery management system, which usually has the function of measuring the battery voltage, preventing or avoiding the abnormal conditions of over-discharge, over-charge, over-temperature, etc. of the battery, the testing of battery-managed systems, which often uses direct testing of the battery, is both unsafe and takes up a significant amount of space, and the operation is inconvenient, therefore, a device which can simulate a plurality of single batteries to be connected in series to provide the test of the battery management system is needed.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a device for simulating the series connection of multiple single batteries to provide a battery management system test, which can effectively solve the problems in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a device that simulation many battery cells establish ties and provide battery management system test, includes simulation battery circuit, simulation temperature circuit, its characterized in that: the simulation battery circuit comprises a plurality of groups of simulation batteries, and the simulation temperature circuit is used for testing temperature.

Preferably, the analog battery circuit comprises a power supply anode B +, a power supply cathode B-, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor Rn-1, a resistor Rn, electrolytic capacitors C620, C621, C622, C623, C624, C625, C626, C627, C628 and C629, a jumper cap can be inserted to perform short-circuit J1, J2, J3, J4, J5, J6, J7, J8, J9 and J10, the B + is an anode of an externally added power supply, the B-is a cathode of an externally added power supply, the electrolytic capacitors C620 to C629 are connected in a line, the resistors R1 to R8, the jumper R-1 and the Rn are connected in series to a line, the jumper cap can be inserted to perform short-circuit with the resistor R1, the jumper cap can be inserted to perform short-circuit with the resistor R1 in parallel, and the resistor R1 and the resistor 1 are connected in parallel, the pluggable jumper cap is connected with the resistor Rn-1 in parallel in a short mode J9, and the pluggable jumper cap is connected with the resistor Rn in parallel in a short mode J10.

Preferably, the analog battery circuit comprises a plurality of groups of resistors, capacitors and connections capable of being inserted into jumper caps, and is used for simulating battery strings, and the number of the groups is required to be selected according to actual needs.

Preferably, the analog temperature circuit comprises a resistor R679, a resistor R680, a resistor R681, a resistor R682, a capacitor C630, a capacitor C631, a capacitor C632, a capacitor C633, NTC1+, NTC1-, NTC2+, NTC2-, NTC3+, NTC3-, NTCn +, NTCn-, the capacitor C630 is connected with the resistor R679 in parallel, the capacitor C631 is connected with the resistor R680 in parallel, the capacitor C632 is connected in parallel with the resistor R681, the capacitor C633 is connected in parallel with the resistor R682, the NTC1+ and the NTC 1-are a group of lines, are connected with a connector for collecting temperature of the battery management system, the NTC2+ and the NTC 2-are a group of lines, are connected with a connector for collecting temperature of the battery management system, the NTC3+ and the NTC 3-are a group of lines, are connected with a connector for collecting temperature of the battery management system, and the NTCn + and the NTCn-are a group of wires and are connected with a connector for collecting the temperature of the battery management system.

Preferably, the analog temperature circuit comprises a plurality of groups of resistors, capacitors and two NTC connectors, and the number of the groups needs to be determined according to actual needs.

Preferably, the resistors in the analog temperature circuit are all precision adjustable resistors and are used for changing temperature, and the capacitors in the analog temperature circuit are all patch ceramic capacitors and are used for filtering.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model provides a device that simulation many battery cells establish ties and provide battery management system test, includes simulation battery circuit, simulation temperature circuit, can simulate the sampling of multichannel battery, under the condition that does not exceed maximum cluster number, the sampling cluster number can manually be adjusted, has avoided using battery series test in-process, the short circuit problem that probably appears, and the volume ratio of device is little when using battery test.

Drawings

Fig. 1 is a circuit diagram of a battery circuit simulated by the device for simulating the series connection of a plurality of single batteries to provide the battery management system test.

Fig. 2 is a circuit diagram of a device simulating a temperature circuit for simulating a plurality of single batteries connected in series to provide a battery management system test.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in FIG. 1, a device for simulating a plurality of single batteries connected in series to provide a battery management system test comprises a circuit including B +, B-, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor Rn-1, a resistor Rn, electrolytic capacitors C620, C621, C622, C623, C624, C625, C626, C627, C628 and C629, wherein a jumper cap can be inserted to perform short-circuiting J1, J2, J3, J4, J5, J6, J7, J8, J9 and J10, B + is the positive pole of an externally added power supply, B-is the negative pole of the externally added power supply, electrolytic capacitors C620 to C629 are connected in series on a line, resistors R1 to R686-R9, Rn-1 and Rn are connected in series on a jumper line, a jumper cap can be inserted to perform short-circuiting with a resistor R862 and a resistor R8253 connected in parallel, by analogy, the insertable jumper cap is in short circuit J8 parallel connection with the resistor R8, the insertable jumper cap is in short circuit J9 parallel connection with the resistor Rn-1, the insertable jumper cap is in short circuit J10 parallel connection with the resistor Rn, the simulation battery circuit comprises a plurality of groups of resistors, capacitors and the insertable jumper cap, the simulation battery circuit is used for simulating a battery string, and the number of the groups is required to be selected according to actual needs. When the test is carried out, firstly, the resistance value of each adjustable resistor is tested, whether the adjustable resistor is consistent in size or not is judged, the basically consistent test value needs to be ensured, the error is in a small range, then, the number of the tested battery strings needs to be determined, if the number of the tested battery strings is smaller than the maximum number of the tested battery strings, a jumper cap needs to be inserted into a position of a JUMP with the more strings behind, the redundant strings are in short circuit, finally, the test wire harness is manufactured, a male head corresponding to a female head of a sampling connector of a battery management system is adopted as a connector of the wire harness, and an identifiable mark is added on each independent wire for preventing the. When normal voltage collection is tested, a normal voltage signal can be accessed to the input end of the power supply, the condition that the maximum sampling range is exceeded is avoided, and whether a sampling value is correct or not is read; when a single battery is tested to be in overvoltage, the resistance value of a single string can be reduced, and the analog voltage is too low; when the single battery is tested to be under-voltage, the resistance value of the single string can be increased, the analog voltage is too high, but the maximum sampling range is required to be avoided, otherwise, the sampling chip is damaged; when the test voltage is unbalanced, the resistance value of a single string or a plurality of strings can be adjusted to reach the voltage range to be tested, and the control strategy of the battery management system is tested.

As shown in fig. 2, a device for simulating series connection of a plurality of single batteries to provide a battery management system test includes a precision adjustable resistor R679, a precision adjustable resistor R680, a precision adjustable resistor R681, a precision adjustable resistor R682, a patch ceramic capacitor C630, a patch ceramic capacitor C631, a patch ceramic capacitor C632, a patch ceramic capacitor C633, NTC1+, NTC1-, NTC2+, NTC2-, NTC3+, NTC3-, NTCn +, NTCn-, the patch ceramic capacitor C630 is connected in parallel with the precision adjustable resistor R679, the patch ceramic capacitor C631 is connected in parallel with the precision adjustable resistor R680, the patch ceramic capacitor C632 is connected in parallel with the precision adjustable resistor R681, the patch ceramic capacitor C633 is connected in parallel with the precision adjustable resistor R682, the NTC1+ and the NTC 1-are a set of wires, a connector connected to the battery management system to collect temperature, the NTC2+ and the NTC 2-are a set of wires, the temperature acquisition circuit comprises a battery management system, a temperature acquisition connector, a NTCn + and a NTCn 3, wherein the NTCn 3+ and the NTCn 3-are connected into the battery management system, the temperature acquisition connector is connected into the battery management system, the NTCn + and the NTCn-are connected into the battery management system, the temperature acquisition connector is connected into the battery management system, a temperature simulation circuit comprises a plurality of groups of resistors, capacitors and two NTC connectors, and the number of the groups is required to be determined according to actual needs. After the connector for collecting the temperature by the battery management system is accessed, the resistance value is adjusted, and whether the temperature read by the battery management system is correct or not is tested, so that whether the adjusted resistance value is met or not is judged. When testing high temperature, the resistance value is reduced, and whether the response of the battery management system is correct is tested; when the test is carried out at low temperature, the resistance value is increased, and whether the response of the battery management system is correct is tested; when the test temperature difference is large, the adjustment of single or multiple resistance values is unbalanced, and whether the response of the battery management system is correct is tested.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a device that simulation many battery cells establish ties and provide battery management system test, includes simulation battery circuit, simulation temperature circuit, its characterized in that: the simulated battery circuit comprises a plurality of groups of batteries, and the simulated temperature circuit is used for testing temperature.

2. The apparatus of claim 1, wherein the apparatus is configured to simulate a plurality of cells connected in series to provide a battery management system test, and further comprising: the analog battery circuit comprises a power supply anode B +, a power supply cathode B-, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor Rn-1, a resistor Rn, electrolytic capacitors C620, C621, C622, C623, C624, C625, C626, C627, C628 and C629, wherein jumper caps can be inserted to perform short-circuit J1, J2, J3, J4, J5, J6, J7, J8, J9 and J10, the B + is an anode of an externally added power supply, the B-is a cathode of the externally added power supply, the electrolytic capacitors C620 to C629 are arranged on a line, the resistors R1 to R8, Rn-1 and Rn are connected in series on a line, the jumper cap can be inserted to perform short-circuit with the resistor R1, the jumper cap can be inserted to perform short-circuit with the resistor R1 and the resistor R1 in parallel connection, and the resistor R1 and the resistor 1 are connected in parallel, the pluggable jumper cap is connected with the resistor Rn-1 in parallel in a short mode J9, and the pluggable jumper cap is connected with the resistor Rn in parallel in a short mode J10.

3. The apparatus of claim 1, wherein the apparatus is configured to simulate a plurality of cells connected in series to provide a battery management system test, and further comprising: the simulation battery circuit comprises a plurality of groups of resistors, capacitors and connections capable of being inserted into jumper caps, and is used for simulating battery strings, and the number of the groups is required to be selected according to actual needs.

4. The apparatus of claim 1, wherein the apparatus is configured to simulate a plurality of cells connected in series to provide a battery management system test, and further comprising: the simulated temperature circuit comprises a resistor R679, a resistor R680, a resistor R681, a resistor R682, a capacitor C630, a capacitor C631, a capacitor C632, a capacitor C633, NTC1+, NTC1-, NTC2+, NTC2-, NTC3+, NTC3-, NTCn +, NTCn-, the capacitor C630 is connected with the resistor R679 in parallel, the capacitor C631 is connected with the resistor R680 in parallel, the capacitor C632 is connected with the resistor R681 in parallel, the capacitor C633 is connected with the resistor R682 in parallel, the NTC1+ and the NTC 1-are a set of wires, a connector connected with the battery management system for collecting temperature is connected with the battery management system, the NTC2+ and the NTC 2-are a set of wires, a connector connected with the battery management system for collecting temperature is connected with the battery management system, the NTC3+ and the NTC 3-are a set of wires, a connector connected with the battery management system for collecting temperature is connected with the battery management system.

5. The apparatus of claim 1, wherein the apparatus is configured to simulate a plurality of cells connected in series to provide a battery management system test, and further comprising: the analog temperature circuit comprises a plurality of groups of resistors, capacitors and two NTC connectors, and the number of the groups is determined according to actual needs.

6. The apparatus of claim 1, wherein the apparatus is configured to simulate a plurality of cells connected in series to provide a battery management system test, and further comprising: the resistors in the analog temperature circuit are all precision adjustable resistors and are used for changing temperature, and the capacitors in the analog temperature circuit are all patch ceramic capacitors and are used for filtering.