Integrated battery pre-charging control device

Abstract

The invention relates to the field of new energy high-voltage electricity, and discloses an integrated battery pre-charging control device which comprises a first conductive part, a second conductive part, an alloy resistor, a mounting bracket and a driving mechanism, the alloy resistor is elastically mounted on the mounting bracket; a first connecting contact and a second connecting contact are arranged on the alloy resistor; the driving mechanism can drive the alloy resistor to be in a first state and a second state, when the alloy resistor is in the first state, the first connecting contact of the alloy resistor abuts against the first conductive part, and the second connecting contact of the alloy resistor abuts against the second conductive part; and when the alloy resistor is in the second state, the first connecting contact of the alloy resistor is far away from the first conductive part, and the second connecting contact of the alloy resistor is far away from the second conductive part. The structure is simple, the design is ingenious, the material use is reduced, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of new energy high-voltage electrical equipment, and particularly to an integrated battery precharge control device. Background Technology

[0002] Pre-charging is essential for ensuring the safety of a vehicle's high-voltage system. During charging, pre-charging reduces sparking when the high-voltage relay closes, minimizing damage to high-voltage components from high-voltage surges, thereby improving the overall safety of the high-voltage system. The motor controller is a crucial component in new energy vehicles responsible for controlling motor operation, and the pre-charging capacitor is a key part of this controller. Pre-charging provides the necessary electrical energy to the motor controller, enabling it to operate normally under high-voltage conditions, preventing sparking caused by excessive voltage, reducing impact on high-voltage components, and protecting the safety of the high-voltage system.

[0003] Our motor controller contains a supercapacitor. It exists to ensure smooth motor operation. When we power on, due to the presence of the capacitor, we cannot directly close the main positive and negative relays. We need to add a small relay and a pre-charging resistor, thus creating a small pre-charging circuit. This pre-charging circuit is used to pre-charge the supercapacitor. Pre-charging involves allowing the voltage to rise slowly. Because of the pre-charging resistor, the current is impeded, ensuring that the external circuit can stably withstand the high voltage.

[0004] Pure electric vehicles pre-charge not only during discharge but also during charging. This means the battery pack has two pre-charge relays and two pre-charge resistors. It has two high-voltage connectors: one for high-voltage discharge output and the other for DC fast charging input. There's a pre-charge circuit at the high-voltage discharge output and another at the DC fast charging input. The first high-voltage discharge output pre-charge circuit charges the capacitors on the high-voltage line during high-voltage output, completing the pre-charge before closing the main positive relay. This prevents electrical sparks (no voltage difference) and ensures the safety of the main positive relay.

[0005] Existing precharge modules rely on the interaction between relays and precharge resistors, resulting in complex structures and high costs. Summary of the Invention

[0006] The purpose of this invention is to provide an integrated battery precharge control device, which aims to solve the problems in the prior art.

[0007] This application provides an integrated battery precharge control device, including a first conductive part, a second conductive part, an alloy resistor, a mounting bracket, and a driving mechanism; the alloy resistor is elastically mounted on the mounting bracket, and the alloy resistor is provided with a first connecting contact point and a second connecting contact point; the driving mechanism can drive the alloy resistor to a first state and a second state. When the alloy resistor is in the first state, the first connecting contact point of the alloy resistor abuts against the first conductive part, and the second connecting contact point of the alloy resistor abuts against the second conductive part; when the alloy resistor is in the second state, the first connecting contact point of the alloy resistor is away from the first conductive part, and the second connecting contact point of the alloy resistor is away from the second conductive part.

[0008] Furthermore, the first conductive part and the second conductive part are used to connect to an external circuit to form a complete electrical circuit.

[0009] Furthermore, the driving mechanism includes a conductive coil and a third conductive part and a fourth conductive part electrically connected to the conductive coil, the third conductive part and the fourth conductive part being used to connect to an external power supply; the alloy resistor is magnetic, and the conductive coil can generate a magnetic field when energized, causing the first connecting contact point and the second connecting contact point of the alloy resistor to abut against the first conductive part and the second conductive part, respectively.

[0010] Furthermore, one end of the alloy resistor is hinged to the mounting bracket, allowing the alloy resistor to rotate freely. The other end of the alloy resistor is elastically connected to the mounting bracket via a spring. When the conductive coil is not energized and does not generate a magnetic field, under the action of the spring, the first and second contact points of the alloy resistor move away from the first and second conductive parts, respectively.

[0011] Existing pre-charge modules use relays and pre-charge resistors. This application uses a drive mechanism to move an alloy resistor to control the connection and disconnection of the entire circuit. Specifically, when the drive mechanism drives the alloy resistor to a first state, the first contact point of the alloy resistor abuts against the first conductive part, and the second contact point of the alloy resistor abuts against the second conductive part, thus the entire circuit is connected. When the drive mechanism drives the alloy resistor to a second state, the first contact point of the alloy resistor moves away from the first conductive part, and the second contact point of the alloy resistor moves away from the second conductive part, thus the entire circuit is disconnected. This application features a simple structure, ingenious design, reduced material usage, and lower costs. Attached Figure Description

[0012] Figure 1 This is a perspective view of an integrated battery precharge control device provided in an embodiment of the present invention; Figure 2This is a schematic diagram of the structure of an integrated battery precharge control device provided in an embodiment of the present invention. Detailed Implementation

[0013] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0014] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0016] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0017] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0018] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0019] Reference Figure 1-2 An integrated battery precharge control device includes a first conductive part 2, a second conductive part 3, an alloy resistor 1, a mounting bracket 2, and a drive mechanism. The alloy resistor 1 is elastically mounted on the mounting bracket 2, and a first connecting contact point 11 and a second connecting contact point 12 are provided on the alloy resistor 1. The drive mechanism can drive the alloy resistor 1 to a first state and a second state. When the alloy resistor 1 is in the first state, the first connecting contact point 11 of the alloy resistor 1 abuts against the first conductive part 2, and the second connecting contact point 12 of the alloy resistor 1 abuts against the second conductive part 3. When the alloy resistor 1 is in the second state, the first connecting contact point 11 of the alloy resistor 1 moves away from the first conductive part 2, and the second connecting contact point 12 of the alloy resistor 1 moves away from the second conductive part 3.

[0020] Furthermore, the first conductive part 2 and the second conductive part 3 are used to connect an external circuit to form a complete electrical circuit.

[0021] Existing pre-charge modules use relays and pre-charge resistors. This application uses a drive mechanism to move the alloy resistor 1 to achieve the switching of the entire circuit. Specifically, when the drive mechanism drives the alloy resistor 1 to the first state, the first contact point 11 of the alloy resistor 1 abuts against the first conductive part 2, and the second contact point 12 of the alloy resistor 1 abuts against the second conductive part 3, and the entire circuit is connected. When the drive mechanism drives the alloy resistor 1 to the second state, the first contact point 11 of the alloy resistor 1 moves away from the first conductive part 2, and the second contact point 12 moves away from the second conductive part 3, and the entire circuit is disconnected. This application has a simple structure, ingenious design, reduces material usage, and lowers costs.

[0022] Furthermore, the driving mechanism includes a conductive coil 6 and a third conductive part 4 and a fourth conductive part 5 electrically connected to the conductive coil 6. The third conductive part 4 and the fourth conductive part 5 are used to connect to an external power supply. The alloy resistor 1 is magnetic. When the conductive coil 6 is energized, it can generate a magnetic field, so that the first contact point 11 and the second contact point 12 of the alloy resistor 1 abut against the first conductive part 2 and the second conductive part 3, respectively.

[0023] Furthermore, one end of the alloy resistor 1 is hinged to the mounting bracket 2, allowing the alloy resistor 1 to rotate freely. The other end of the alloy resistor 1 is elastically connected to the mounting bracket 2 via a spring. When the conductive coil 6 is not energized, the conductive coil 6 does not generate a magnetic field. Under the action of the spring, the first contact point 11 and the second contact point 12 of the alloy resistor 1 move away from the first conductive part 2 and the second conductive part 3, respectively.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0025] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An integrated battery precharge control device, characterized in that, The device includes a first conductive part, a second conductive part, an alloy resistor, a mounting bracket, and a driving mechanism. The alloy resistor is elastically mounted on the mounting bracket and has a first connecting contact point and a second connecting contact point. The driving mechanism can drive the alloy resistor to a first state and a second state. When the alloy resistor is in the first state, the first connecting contact point of the alloy resistor abuts against the first conductive part, and the second connecting contact point of the alloy resistor abuts against the second conductive part. When the alloy resistor is in the second state, the first connecting contact point of the alloy resistor is away from the first conductive part, and the second connecting contact point of the alloy resistor is away from the second conductive part.

2. The integrated battery precharge control device according to claim 1, characterized in that, The first conductive part and the second conductive part are used to connect to an external circuit to form a complete electrical circuit.

3. The integrated battery precharge control device according to claim 2, characterized in that, The driving mechanism includes a conductive coil and a third conductive part and a fourth conductive part electrically connected to the conductive coil. The third conductive part and the fourth conductive part are used to connect to an external power source. The alloy resistor is magnetic. When the conductive coil is energized, it can generate a magnetic field, causing the first contact point and the second contact point of the alloy resistor to abut against the first conductive part and the second conductive part, respectively.

4. The integrated battery precharge control device according to claim 3, characterized in that, One end of the alloy resistor is hinged to the mounting bracket, allowing the alloy resistor to rotate freely. The other end of the alloy resistor is elastically connected to the mounting bracket via a spring. When the conductive coil is not energized and does not generate a magnetic field, the first and second contact points of the alloy resistor move away from the first and second conductive parts respectively under the action of the spring.

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