Commercial vehicle low-voltage 24V lithium battery testing device

Abstract

The utility model relates to a commercial vehicle low-voltage 24V lithium battery testing device, which comprises a fixing plate, a motor and a vehicle generator are respectively arranged at the top of the fixing plate, a belt pulley is connected to the front end of the motor, one end of the belt pulley is in transmission connection with the outside of the belt pulley, and the other end of the belt pulley is in transmission connection with the vehicle generator. Actual charging and discharging and related working conditions can be simulated in a laboratory, the low-voltage 24V lithium battery of the commercial vehicle is charged according to the rotating speed of the generator, the equipment is provided with a power resistor, the discharging working condition of the vehicle can be simulated, the actual operation working condition is greatly improved, and the lithium battery is simplified to read the charging and discharging working condition data in the vehicle operation process.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery testing, in particular to a low-voltage 24V lithium battery testing device for commercial vehicles. Background Art

[0002] The existing automotive lithium battery testing conditions require real-time mounting on the vehicle, starting the vehicle and running it, and reading relevant data during the vehicle testing, which is relatively troublesome and cumbersome.

[0003] Therefore, we propose a commercial vehicle low-voltage 24V lithium battery test device, which can simulate actual charging and discharging and related working conditions in the laboratory without the need for the vehicle to be running. The low-voltage 24V lithium battery of the commercial vehicle is charged according to the generator speed. The device is equipped with a power resistor to simulate the vehicle discharge working conditions, which greatly simplifies the reading of the charging and discharging working condition data of the lithium battery during vehicle operation. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, meet the actual needs, and provide a low-voltage 24V lithium battery testing device for commercial vehicles to solve the current existing technology of vehicle lithium battery testing conditions, which requires real-time mounting on the vehicle, starting the vehicle and running, and reading relevant data during vehicle testing, which is relatively troublesome and cumbersome technical problems.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: to design a low-voltage 24V lithium battery testing device for commercial vehicles, including a fixing plate, a motor and a vehicle generator are respectively arranged on the top of the fixing plate, a pulley is connected to the front end of the motor, one end of the belt is externally connected to the pulley, and the other end of the belt is connected to the vehicle generator.

[0006] Preferably, a tensioner is installed inside the pulley, a tensioner fixing bracket is provided at the front end of the tensioner, and the tensioner fixing bracket is connected to the tensioner through a shaft, and a fixing plate is connected to the bottom of the tensioner fixing bracket.

[0007] Preferably, a motor bracket is installed at the bottom of the motor, and a fixing plate is connected to the bottom of the motor bracket.

[0008] Preferably, a generator bracket is installed at the bottom of the vehicle generator, and a fixing plate is connected to the bottom of the generator bracket.

[0009] Preferably, heavy-duty load-bearing foot cups are installed at the four corners of the bottom of the fixing plate.

[0010] Preferably, the power generation end of the vehicle generator is connected to the negative side of the cable and the positive side of the cable respectively, and the negative side of the cable and the positive side of the cable are connected to the T-type interface respectively.

[0011] Preferably, one end of the T-shaped interface is connected to a cable branch line, and the other end of the cable branch line is respectively connected to a first power resistor, a second power resistor, and a third power resistor. Air switches are arranged at the rear ends of one sides of the first power resistor and the third power resistor.

[0012] Preferably, one side of the negative cable and the positive cable is connected to a lead-acid battery.

[0013] Preferably, one side of the negative cable and the positive cable is connected to a 24V vehicle lithium battery and a DC contactor.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model does not require the operation of an automobile, and can simulate actual charging and discharging and related working conditions in a laboratory. It charges a 24V low-voltage lithium battery for commercial vehicles according to the generator speed. The device is provided with power resistors, which can simulate the vehicle discharge working conditions, greatly simulate the actual operation working conditions, and simplify the process of the lithium battery reading the charging and discharging working condition data during vehicle operation.

[0016] 2. When a large current exceeds the device load in the simulated environment, the DC contactor in the present utility model will disconnect the commercial 24V lithium battery to protect the lithium battery. The lead-acid battery is for circuit protection. When a large current passes through, the lithium battery is disconnected and the current is introduced into the lead-acid battery to protect the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a top view structural schematic diagram of the present utility model;

[0018] Figure 2 is a front view structural schematic diagram of the present utility model;

[0019] Figure 3 is a top view structural schematic diagram of the cable connection of the present utility model;

[0020] Figure 4 is a front view structural schematic diagram of the cable connection of the present utility model;

[0021] Figure 5 is a circuit principle schematic diagram of the present utility model.

[0022] In the figure: 1, motor bracket; 2, motor; 3, pulley; 4, belt; 5, tensioning pulley; 6, shaft; 7, tensioning pulley fixing bracket; 8, vehicle generator; 9, generator bracket; 10, fixing plate; 11, heavy-duty load-bearing foot cup; 12, negative cable; 13, positive cable; 14, T-shaped interface; 15, first power resistor; 16, second power resistor; 17, third power resistor; 18, air switch; 19, lead-acid battery; 20, 24V vehicle lithium battery; 21, DC contactor; 22, cable branch line. DETAILED DESCRIPTION OF THE INVENTION

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0024] Embodiment 1: A low-voltage 24V lithium battery test device for commercial vehicles. Refer to Figures 1 to 5 , including a fixing plate 10. A motor 2 and a vehicle generator 8 are respectively arranged at the top of the fixing plate 10. A pulley 3 is connected to the front end of the motor 2. One end of a belt 4 is externally connected to the pulley 3, and the other end of the belt 4 is connected to the vehicle generator 8 in a driving manner. The motor 2 is driven by electricity to rotate the motor shaft. The motor 2 is equipped with a driver to control different speeds and forward and reverse rotations to simulate the speed of the vehicle engine in the actual environment. Its speed can reach 0 - 8000 revolutions per minute. The motor 2 is fixed on the motor bracket 1 by bolts. The rotation of the motor 2 drives the pulley 3 to rotate, and drives the vehicle generator 8 to rotate through the belt 4 to realize the power generation of the generator 2. The device is equipped with a tensioning pulley 5. The tensioning pulley 5 is fixed on the tensioning pulley 5 bracket by a tension spring, and the tension of the belt 4 can be adjusted.

[0025] Specifically, refer to Figure 1 and Figure 2 , a tensioning pulley 5 is installed inside the pulley 3. A tensioning pulley fixing bracket 7 is arranged at the front end of the tensioning pulley 5, and the tensioning pulley fixing bracket 7 and the tensioning pulley 5 are connected by a shaft 6. The bottom of the tensioning pulley fixing bracket 7 is connected to the fixing plate 10.

[0026] More specifically, refer to Figure 1 and Figure 2 , a motor bracket 1 is installed at the bottom of the motor 2, and the bottom of the motor bracket 1 is connected to the fixing plate 10.

[0027] Furthermore, refer to Figure 1 and Figure 2 , a generator bracket 1 is installed at the bottom of the vehicle generator 8, and the bottom of the generator bracket 1 is connected to the fixing plate 10.

[0028] Even further, refer to Figure 2 , heavy-duty load-bearing feet 11 are installed at the four corners of the bottom of the fixing plate 10.

[0029] It should be noted that, refer to Figure 3 , Figure 4 and Figure 5 , the power generation end of the vehicle generator 8 is respectively connected to the negative cable 12 and the positive cable 13. One side of the negative cable 12 and the positive cable 13 is respectively connected to the T-shaped interface 14.

[0030] It should be noted that, refer to Figure 3 , Figure 4 and Figure 5, one end of the T-shaped interface 14 is connected to the cable branch line 22, and the other ends of the cable branch line 22 are respectively connected to a first power resistor 15, a second power resistor 16, and a third power resistor 17. Air switches 18 are provided at the rear ends on one side of the first power resistor 15 and the third power resistor 17. The cable branch line 22 is connected to the first power resistor 15, the second power resistor 16, and the third power resistor 17 to simulate different power loads during the operation of a vehicle in reality. When there is a large current exceeding the device load in the simulated environment, the DC contactor 21 will operate to disconnect the commercial 24V lithium battery to protect the lithium battery. The lead-acid battery 19 is for circuit protection. When a large current passes through and the lithium battery is disconnected, the current is introduced into the lead-acid battery 19 to protect the circuit.

[0031] It is responsible for connecting and disconnecting the vehicle lithium battery, and can directly connect and disconnect when there is a large current exceeding the load.

[0032] It is worth introducing that, referring to Figure 3 , Figure 4 and Figure 5 , one side of the cable negative 12 and the cable positive 13 is connected to the lead-acid battery 19.

[0033] It is worth emphasizing that, referring to Figure 3 , Figure 4 and Figure 5 , one side of the cable negative 12 and the cable positive 13 is connected to the 24V vehicle lithium battery 20 and the DC contactor 21.

[0034] When using a commercial vehicle low-voltage 24V lithium battery test device, the motor 2 is driven by electricity to rotate the motor shaft. The motor 2 is equipped with a driver that can control different speeds and forward and reverse rotations to simulate the engine speed of a vehicle in the actual environment. Its speed can reach 0 - 8000 revolutions per minute. The motor 2 is fixed to the motor bracket 1 by bolts. The rotation of the motor 2 drives the pulley 3 to rotate, and drives the vehicle generator 8 to rotate through the belt 4 to realize the power generation of the generator 2. The device is equipped with a tension pulley 5, and the tension pulley 5 is fixed to the tension pulley 5 bracket by a tension spring, which can realize the adjustment of the tightness of the belt 4. The cable branch line 22 is connected to the first power resistor 15, the second power resistor 16, and the third power resistor 17 to simulate different power loads during the operation of a vehicle in reality. When there is a large current exceeding the device load in the simulated environment, the DC contactor 21 will operate to disconnect the commercial 24V lithium battery to protect the lithium battery. The lead-acid battery 19 is for circuit protection. When a large current passes through and the lithium battery is disconnected, the current is introduced into the lead-acid battery 19 to protect the circuit.

[0035] In addition, the components designed in the present utility model are all common standard parts or parts known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or through conventional experimental methods. Those skilled in the art can fully realize them without further elaboration. The content protected by the present utility model also does not involve improvements to the internal structure and method.

[0036] The embodiments disclosed in the present utility model are preferred embodiments, but are not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are within the protection scope of the present utility model.

Claims

1. A commercial vehicle low-voltage 24V lithium battery testing device, comprising a fixing plate (10), characterized in that: The top of the fixing plate (10) is provided with a motor (2) and a vehicle generator (8), respectively; the front end of the motor (2) is connected to a pulley (3); the pulley (3) is externally connected to one end of a belt (4); the other end of the belt (4) is connected to the vehicle generator (8); The generating end of the vehicle generator (8) is respectively connected to the negative cable (12) and the positive cable (13); one side of the negative cable (12) and the positive cable (13) is respectively connected to a T-type interface (14); one end of the T-type interface (14) is connected to a cable branch line (22); the other end of the cable branch line (22) is respectively connected to a first power resistor (15), a second power resistor (16) and a third power resistor (17); the rear ends of one side of the first power resistor (15) and the third power resistor (17) are both provided with an air switch (18); one side of the negative cable (12) and the positive cable (13) are connected to a lead-acid battery (19); and one side of the negative cable (12) and the positive cable (13) are connected to a 24V vehicle lithium battery (20) and a DC contactor (21).

2. A commercial vehicle low-voltage 24V lithium battery testing device as claimed in claim 1, characterized in that: A tensioner (5) is installed inside the pulley (3), a tensioner fixing bracket (7) is arranged at the front end of the tensioner (5), and the tensioner fixing bracket (7) is connected to the tensioner (5) via a shaft (6), and a fixing plate (10) is connected to the bottom of the tensioner fixing bracket (7).

3. A commercial vehicle low-voltage 24V lithium battery testing device as claimed in claim 1, characterized in that: A motor bracket (1) is installed at the bottom of the motor (2), and a fixing plate (10) is connected to the bottom of the motor bracket (1).

4. A commercial vehicle low-voltage 24V lithium battery testing device as claimed in claim 1, characterized in that: A generator bracket (1) is installed at the bottom of the vehicle generator (8), and a fixing plate (10) is connected to the bottom of the generator bracket (1).

5. A commercial vehicle low-voltage 24V lithium battery testing device as claimed in claim 1, characterized in that: Heavy-duty load-bearing foot cups (11) are installed at the four corners of the bottom of the fixing plate (10).

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