EP-4737915-A1 - SHUNT MODULE, CURRENT ACQUISITION SYSTEM AND CIRCUIT, AND VEHICLE

Abstract

Provided in the embodiments of the present application are a shunt module, a current acquisition system, a current acquisition circuit, and a vehicle. The shunt module includes: a plurality of conductive connectors arranged in sequence; and a plurality of signal conversion components, different signal conversion components in the plurality of signal conversion components being arranged between two different adjacent conductive connectors, each of the signal conversion components being provided with a first sampling point, and the sampling point being configured to acquire electrical signals.

Inventors

• WU, ZHIHONG
• MA, Hang
• LI, Qiandeng

Assignees

• Contemporary Amperex Technology Co., Limited
• Contemporary Amperex Runzhi Software Technology Limited

Dates

Publication Date

20260506

Application Date

20240507

Claims (14)

1. A shunt module, comprising: a plurality of conductive connectors arranged in sequence; and a plurality of signal conversion components, different signal conversion components in the plurality of signal conversion components being arranged between two different adjacent conductive connectors, each of the signal conversion components being provided with a first sampling point, and the sampling point being configured to acquire electrical signals.
2. The shunt module according to claim 1, wherein the plurality of conductive connectors are spaced apart from each other, and the signal conversion component is located within at least a portion of the interval between two adjacent conductive connectors.
3. The shunt module according to claim 1 or 2, wherein the signal conversion component is arranged between each two adjacent conductive connectors.
4. The shunt module according to any one of claims 1 to 3, further comprising: a circuit board, the circuit board being arranged on one side of the plurality of conductive connectors, and the plurality of signal conversion components being connected to the circuit board; and a first signal transmission component arranged on the circuit board, the first signal transmission component being electrically connected to the first sampling point of each of the signal conversion components.
5. The shunt module according to claim 4, further comprising: a plurality of temperature sensors, the plurality of temperature sensors being correspondingly arranged on the plurality of signal conversion components, the plurality of temperature sensors being connected to the circuit board, each of the temperature sensors being provided with a second sampling point, and the second sampling point being configured to acquire the temperature of the signal conversion component.
6. The shunt module according to claim 4, further comprising: a calibration mark arranged on the circuit board.
7. The shunt module according to any one of claims 1 to 6, wherein a third sampling point is arranged on each of the plurality of conductive connectors; and the shunt module further comprises: a plurality of second signal transmission components, the plurality of second signal transmission components being correspondingly arranged at the third sampling points of the plurality of conductive connectors, and each of the second signal transmission components being electrically connected to the corresponding third sampling point.
8. The shunt module according to claim 7, wherein the second signal transmission component comprises: a connecting plate, the connecting plate being attached to at least a partial region of the conductive connector and connected to the conductive connector, and the third sampling point being located within the at least partial region; and a transmission part, the transmission part being formed by extending the connecting plate, the transmission part being electrically connected to the conductive connector through the connecting plate, and the transmission part being configured to transmit the electrical signal acquired by the conductive connector.
9. The shunt module according to claim 8, wherein the transmission part comprises at least one contact pin.
10. The shunt module according to any one of claims 1 to 9, wherein different signal conversion components have different structural features.
11. A current acquisition system, comprising: a battery and a sampling plate; and the shunt module according to any one of claims 1 to 10, wherein the battery and the sampling plate are respectively connected to the shunt module.
12. A current acquisition circuit, comprising: a plurality of sampling modules, the plurality of sampling modules being arranged corresponding to the plurality of signal conversion components in the shunt module according to any one of claims 1 to 10; and a main control module, the main control module being configured to be connected to the plurality of sampling modules respectively, and the main control module being configured to obtain a current group of the plurality of sampling modules according to the electrical signals acquired by the plurality of sampling modules.
13. The current acquisition circuit according to claim 12, wherein each of the plurality of sampling modules comprises at least one of a differential sampling subcircuit and a single-ended sampling subcircuit.
14. A vehicle, comprising the current acquisition system according to claim 11 or the current acquisition circuit according to claim 12.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application claims priority to Chinese Patent Application No. 202322441243.6, filed on September 8, 2023 and entitled "SHUNT MODULE, CURRENT ACQUISITION SYSTEM, CURRENT ACQUISITION CIRCUIT, AND VEHICLE", which is incorporated herein by reference in its entirety. TECHNICAL FIELD The present application relates to the technical field of battery management systems, in particular, to a shunt module, a current acquisition system, a current acquisition circuit, and a vehicle. BACKGROUND As the new energy vehicle industry continues to develop rapidly, the detection of battery management systems is particularly important, and especially, the current data of vehicles while driving and charging needs to be monitored in real time. Currently, current detection usually uses two independent circuits, namely a shunt module current sampling circuit and a Hall sensor current sampling circuit, for main sampling and redundant sampling to achieve the purpose of current detection. As a result, the entire current sampling module is relatively large in structure size, which is not conducive to miniaturization. SUMMARY OF THE INVENTION Embodiments of the present application provide a shunt module, a current acquisition system, a current acquisition circuit, and a vehicle to solve the technical problem of a large size of a current sampling module. According to a first aspect, an embodiment of the present application provides a shunt module, including: a plurality of conductive connectors arranged in sequence; anda plurality of signal conversion components, different signal conversion components in the plurality of signal conversion components being arranged between two different adjacent conductive connectors, each of the signal conversion components being provided with a first sampling point, and the sampling point being configured to acquire electrical signals. In this embodiment, the shunt module may include conductive connectors arranged in sequence and a plurality of signal conversion components, where the plurality of signal conversion components may achieve multi-channel sampling. In this way, only the shunt module can perform main sampling and redundant sampling to achieve the purpose of current detection, reduce the structure size, and facilitate miniaturization. At the same time, the use of a Hall sensor for sampling is avoided, which reduces the interference during the sampling process, thereby improving the current sampling accuracy. In some embodiments, the plurality of conductive connectors are spaced apart from each other, and the signal conversion component is located within at least a portion of the interval between two adjacent conductive connectors. In this embodiment, the plurality of conductive connectors are spaced apart from each other, and the signal conversion component is located within at least a portion of the interval between two adjacent conductive connectors, so that mutual interference between signals generated on the conductive connectors can be reduced, and the sampling accuracy is higher. In some embodiments, the signal conversion component is arranged between each two adjacent conductive connectors. In this embodiment, the signal conversion component is arranged between each two adjacent conductive connectors, that is, a signal conversion component is respectively arranged between each two adjacent conductive connectors, so that the structure of the shunt module is more compact, the structure size is further reduced, and miniaturization is facilitated. In some embodiments, the shunt module further includes: a circuit board, the circuit board being arranged on one side of the plurality of conductive connectors, and the plurality of signal conversion components being connected to the circuit board; anda first signal transmission component arranged on the circuit board, the first signal transmission component being electrically connected to the first sampling point of each of the signal conversion components. In this embodiment, the circuit board can achieve the electrical connection between various components of the shunt module, and the first signal transmission component can be configured to transmit the electrical signal acquired by the signal conversion component, thereby simplifying the assembly work, reducing wiring, achieving the purpose of saving space, and further reducing the structure size, which is conducive to miniaturization. In some embodiments, the shunt module further includes: a plurality of temperature sensors, the plurality of temperature sensors being correspondingly arranged on the plurality of signal conversion components, the plurality of temperature sensors being connected to the circuit board, each of the temperature sensors being provided with a second sampling point, and the second sampling point being configured to acquire the temperature of the signal conversion component. In this embodiment, the temperature sensor ca