CN-224218138-U - Low-voltage storage battery system of commercial vehicle and commercial vehicle

Abstract

The utility model discloses a low-voltage storage battery system of a commercial vehicle and the commercial vehicle, which comprise a 24V low-voltage storage battery pack formed by two 12V storage batteries connected in series through wires, wherein the positive electrode of a first storage battery of the low-voltage storage battery pack is connected with a DCDC power supply, the negative electrode of a second storage battery is grounded, the positive electrodes of the first storage battery and the second storage battery are respectively connected with a vehicle body control module through respective fuse boxes so as to collect voltage of the first storage battery and/or the second storage battery through the vehicle body control modules, the positive electrode of the second storage battery is also connected with an electromagnetic main switch through the fuse boxes, the electromagnetic main switch is respectively connected with a 12V load and the vehicle body control module, and the closed or open state of the electromagnetic main switch is controlled through the vehicle body control module so as to realize power supply to the 12V load. The utility model realizes the detection of the low-voltage storage battery and the single storage battery through simple circuit connection, alarms in time and ensures the timely maintenance of the storage battery.

Inventors

• LIU MAOLONG
• YAO GAOFEI
• CHEN YUEHUI
• SUN YANCHAO
• LIU ZHIYONG

Assignees

• 犀重新能源汽车有限公司
• 河南犀重新能源汽车有限公司
• 浙江犀重新能源汽车技术有限公司

Dates

Publication Date

20260508

Application Date

20250514

Claims (7)

1. 1. A low-voltage storage battery system of a commercial vehicle is characterized by comprising a 24V low-voltage storage battery pack formed by two 12V storage batteries connected in series through a lead, wherein the positive electrode of a first storage battery of the low-voltage storage battery pack is connected with a DCDC power supply, the negative electrode of a second storage battery is grounded, the positive electrodes of the first storage battery and the second storage battery are respectively connected with a vehicle body control module through respective fuse boxes so as to collect voltage of the first storage battery and/or the second storage battery through the vehicle body control modules, the positive electrode of the second storage battery is also connected with an electromagnetic main switch through the fuse boxes, the electromagnetic main switch is respectively connected with a 12V load and the vehicle body control module, and the closing or opening state of the electromagnetic main switch is controlled through the vehicle body control module so as to realize power supply to the 12V load.
2. 2. The low-voltage battery system of claim 1, wherein the body control module is connected with an external temperature sensor through a wire to collect the external ambient temperature in real time.
3. 3. The low voltage battery system of claim 1, wherein the body control module is coupled to a T-BOX for low voltage battery pack power shortage warning when the vehicle is in a dormant state by the T-BOX.
4. 4. The low-voltage battery system of claim 1, wherein the vehicle body control module is further connected to a cabin control module for warning the low-voltage battery pack of the low-voltage battery pack.
5. 5. The low voltage battery system of claim 4, wherein the body control module is connected to the cabin control module by a hard wire.
6. 6. The low voltage battery system of claim 1, wherein the DCDC direct current power source is further directly connected to the body control module.
7. 7. A utility vehicle comprising a low voltage battery system as defined in any one of claims 1-6.

Description

Low-voltage storage battery system of commercial vehicle and commercial vehicle Technical Field The utility model relates to the technical field of new energy electric automobiles, in particular to a low-voltage storage battery system of a commercial vehicle and the commercial vehicle. Background At present, a 24V low-voltage system is commonly used for commercial vehicles, and two lead-acid storage batteries with rated voltage of 12V are connected in series. Because the vehicle is all 24V power supply, and the vehicle often needs 12V electricity due to some special demands, two storage batteries are often led out from the middle of the vehicle by a person to use, and the operation of singly using one storage battery can cause the power shortage of the singly used storage battery, so that the battery pack cannot be normally used. Disclosure of utility model In order to solve the technical problems, the utility model aims to provide a low-voltage storage battery system of a commercial vehicle and the commercial vehicle, which are used for collecting voltage of a first storage battery and/or a second storage battery through a vehicle body control module, judging whether a single storage battery is deficient in power or not, early warning in time and ensuring reliable power utilization of the storage battery. The utility model solves the problems by the following technical proposal: A low-voltage storage battery system of a commercial vehicle comprises a 24V low-voltage storage battery pack formed by two 12V storage batteries connected in series through a lead, wherein the positive electrode of a first storage battery of the low-voltage storage battery pack is connected with a DCDC power supply, the negative electrode of a second storage battery is grounded, the positive electrodes of the first storage battery and the second storage battery are respectively connected with a vehicle body control module through respective fuse boxes so as to collect voltage of the first storage battery and/or the second storage battery through the vehicle body control modules, the positive electrode of the second storage battery is also connected with an electromagnetic main switch through the fuse boxes, the electromagnetic main switch is respectively connected with a 12V load and the vehicle body control module, and the closing or opening state of the electromagnetic main switch is controlled through the vehicle body control module so as to realize power supply to the 12V load. As a further improvement of the utility model, the vehicle body control module is connected with an external temperature sensor through a wire so as to collect the external environment temperature in real time. As a further improvement of the utility model, the vehicle body control module is connected with a T-BOX so as to carry out low-voltage storage battery power shortage warning when the vehicle is in a dormant state through the T-BOX. As a further improvement of the utility model, the car body control module is also connected with a cabin control module so as to carry out low-voltage storage battery power shortage alarming through the cabin control module. As a further development of the utility model, the body control module is connected to the cabin control module by means of a hard wire. As a further development of the utility model, the DCDC direct current power supply is also directly connected to the body control module. Meanwhile, the technical scheme is that the commercial vehicle comprises the low-voltage storage battery system of the commercial vehicle. Compared with the prior art, the utility model has the following advantages: The utility model can realize the detection of the low-voltage storage battery and a single storage battery through simple circuit connection and the optimization of the existing modules of the vehicle, and can give an alarm in time so as to ensure the timely maintenance of the storage battery. In addition, 12V output can be intelligently led out, so that the device is convenient for a user to flexibly use and easy to realize. Drawings FIG. 1 is a circuit diagram of a low voltage battery system for a commercial vehicle according to the present utility model; fig. 2 is a schematic view showing a connection structure of the fuse box of the present utility model to a storage battery. Detailed Description The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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. Examples: The low-voltage storage battery system for the commercial vehicle comprises a 24V low-voltage storage battery pac