Current detection module, controller and vehicle

Abstract

The invention discloses a current detection module, a controller and a vehicle. The current detection module comprises a conductive part, a first shell, a magnet yoke and a detection assembly. The magnet yoke at least partially surrounds the conductive piece; the detection assembly is at least partially arranged in a magnetic field of the magnet yoke; the first housing is connected to the conductive member, at least part of the magnet yoke, and at least part of the detection assembly. Thus, the detection assembly is integrated in the current detection module, so that only the current detection module needs to be calibrated when the position of the detection assembly is calibrated. The current detection module has few components and small volume, so that the calibration process is relatively simple when the current detection module is calibrated; besides, the conductive part and the detection assembly are integrated on the current detection module, so that the error during assembly is relatively small, and the assembly precision between the conductive part and the detection assembly is improved to a certain extent.

Description

Technical Field

[0001] The present application belongs to the field of sensor technology, and specifically relates to a current detection module, a controller and a vehicle. Background Art

[0002] A current sensor is a device that senses the current being measured. It is widely used in electric vehicle motor controllers to monitor the current output from the motor controller to the drive motor. The operating principle of current sensors commonly used in electric vehicles is as follows: when current flows through the magnetic core material on the output copper busbar of the power module, a closed magnetic flux line forms on the magnetic material and passes through the current sensor. The current sensor then outputs an analog signal based on the strength of the generated magnetic field. The greater the magnetic field strength, the greater the output voltage, while the smaller the magnetic field strength, the smaller the output voltage. The sensitivity of current sensors used to detect magnetic field strength is sensitive to the detection position. Large errors in the detection position will result in significant measurement errors in the current sensor.

[0003] In the related art, the output copper busbar is first fixed to the power module, and then the current sensor is fixed to the preset position of the power module. Finally, the installation position of the current sensor is calibrated. However, the calibration process is relatively complicated using the assembly method in the related art. Summary of the Invention

[0004] The present application aims to provide a current detection module, a controller and a vehicle, which can solve the problem of complex calibration process of current sensors in the prior art.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application proposes a current detection module, comprising: a conductive part, a first shell, a magnetic yoke and a detection component; the magnetic yoke at least partially surrounds the conductive part; the detection component is at least partially disposed in the magnetic field of the magnetic yoke; the first shell is respectively connected to the conductive part, at least part of the magnetic yoke, and at least part of the detection component.

[0007] Optionally, the magnetic yoke at least partially surrounds the conductive member along the first direction.

[0008] Optionally, the first shell includes a first shell body and a first clamping portion; the first shell body is arranged on one side of the conductive part along the second direction, the first clamping portion extends from the first shell body to the side close to the conductive part, the first clamping portion is clamped with the conductive part, and the first direction and the second direction intersect.

[0009] Optionally, the magnetic yoke and the detection assembly are respectively clamped to the first housing body;

[0010] Optionally, a first slot is provided on a side of the first shell body close to the conductive member; and the magnetic yoke is at least partially provided in the first slot.

[0011] Optionally, there are multiple first clamping parts; the multiple first clamping parts are arranged around the first shell body, and the multiple first clamping parts are respectively clamped to the edges of the conductive part.

[0012] Optionally, a plurality of the first clamping portions are provided on a side of the first shell body close to the conductive member, a first positioning hole is provided at a position corresponding to the conductive member and the first clamping portion, and the first clamping portion passes through the first positioning hole and is clamped to the conductive member.

[0013] Optionally, a second shell is further included; the second shell is arranged on a side of the conductive member facing away from the first shell, and the second shell and the conductive member are combined to form a liquid injection cavity.

[0014] Optionally, an injection hole is provided on the second shell, and the injection hole is used to inject fixing glue.

[0015] Optionally, the second shell includes a second shell body and a second clamping portion; the second shell body is arranged on the side of the conductive part away from the first shell, one end of the second clamping portion is connected to the second shell body, and the other end extends along the first direction toward the direction away from the second shell body, and the second clamping portion is clamped with the first shell.

[0016] Optionally, the second shell includes a second shell body and a second clamping portion; the second shell body is arranged on the side of the conductive part away from the first shell, the second clamping portion extends from the second shell body to the side close to the conductive part, and the second clamping portion is clamped with the conductive part.

[0017] Optionally, the conductive member is provided with a second positioning hole passing through along the second direction; the second positioning holes are provided on both sides of the conductive member along the third direction, the second clamping portion passes through the second positioning hole and is clamped with the conductive member, and the third direction intersects with the second direction and the first direction respectively.

[0018] Optionally, there are at least two magnetic yokes; at least two magnetic yokes are arranged on both sides of the conductive member along the first direction, a first gap exists between at least two magnetic yokes, and the detection component is at least partially arranged in the first gap.

[0019] Optionally, the detection component includes a sensor and a circuit board; a through hole is provided in the conductive part and passes through the second direction, the through hole corresponds to the first gap, the circuit board is passed through the first gap and the through hole, and the circuit board is clamped with the first shell; the sensor is provided on the circuit board and electrically connected to the circuit board, and the sensor is provided in the first gap; the first direction and the second direction intersect.

[0020] Optionally, the circuit board includes an extension portion and a circuit board body; the circuit board body is inserted through the first shell and the conductive part along the second direction, the extension portion is connected to the circuit board body, a second card slot is provided in the first shell, and the extension portion is card-connected in the second card slot.

[0021] Optionally, the slot is provided on a side of the first shell close to the conductive member.

[0022] Optionally, the sensor is a dual magnetic sensor; the dual magnetic sensor includes a sensor body, a first differential unit and a second differential unit; the first differential unit and the second differential unit are electrically connected to the sensor body respectively; the first gap includes a first sub-gap and a second sub-gap, the conductive part has a first side and a second side relatively arranged along the second direction, the first sub-gap is arranged on the first side, and the second sub-gap is arranged on the second side; the first differential unit is arranged in the first sub-gap, and the second differential unit is arranged in the second sub-gap.

[0023] In a second aspect, an embodiment of the present application proposes a controller, comprising a power module and the current detection module described in the above embodiment; the current detection module is electrically connected to the power module.

[0024] Optionally, the power module includes a DC end and an AC end; the DC end and the AC end are electrically connected, and the current detection module is provided at the DC end and / or the AC end.

[0025] In a third aspect, an embodiment of the present application proposes a vehicle, comprising the current detection module described in the above embodiment; or, the controller described in the above embodiment.

[0026] In an embodiment of the present application, the magnetic yoke is at least partially surrounding the conductive member, the detection assembly is disposed within the magnetic field of the magnetic yoke, and the first shell is respectively connected to the conductive member, at least a portion of the magnetic yoke, and at least a portion of the detection assembly. In this way, by integrating the detection assembly into the current detection module, it is only necessary to calibrate the current detection module when calibrating the position of the detection assembly. Since the current detection module has few components and a small size, the calibration process is relatively simple when calibrating the current detection module. In addition, since the conductive member and the detection assembly are integrated into the current detection module, the error during assembly is relatively small, thereby improving the assembly accuracy between the conductive member and the detection assembly to a certain extent.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 is a schematic diagram of a first current detection module according to an embodiment of the present application;

[0030] Figure 2 is an exploded view of a first current detection module according to an embodiment of the present application;

[0031] Figure 3 is a top view of a first current detection module according to an embodiment of the present application;

[0032] Figure 4 is a top view of a first current detection module according to an embodiment of the present application;

[0033] Figure 5 is a side view of a first current detection module according to an embodiment of the present application;

[0034] Figure 6 It is along Figure 4 Cross-sectional view along line AA;

[0035] Figure 7 is a schematic diagram of a second current detection module according to an embodiment of the present application;

[0036] Figure 8 is an exploded view of a second current detection module according to an embodiment of the present application;

[0037] Figure 9 is a top view of a second current detection module according to an embodiment of the present application;

[0038] Figure 10 It is along Figure 9 Partial cross-sectional view of the midline BB;

[0039] Figure 11 is a schematic diagram of a third current detection module according to an embodiment of the present application;

[0040] Figure 12 is a front view of a third current detection module according to an embodiment of the present application;

[0041] Figure 13 is a side view of a third current detection module according to an embodiment of the present application;

[0042] Figure 14 is a schematic diagram of a controller according to an embodiment of the present application;

[0043] Figure 15 is a schematic diagram of a partial structure of a controller according to an embodiment of the present application;

[0044] Figure 16 is a front view of a controller according to an embodiment of the present application;

[0045] Figure 17 It is along Figure 16 Cross-sectional view along the mid-CC line;

[0046] Figure 18 It is along Figure 17 Cross-sectional view along the mid-DD line;

[0047] Figure 19 This is a flowchart of a controller processing method according to an embodiment of the present application.

[0048] Reference numerals:

[0049] 100 - current detection module; 1 - conductive member; 2 - magnetic yoke; 3 - first housing; 31 - first housing body; 32 - first clamping portion; 4 - detection assembly; 41 - sensor; 42 - circuit board; 421 - circuit board body; 422 - extension portion; 5 - clamping slot; 6 - first gap; 61 - first sub-gap; 62 - second sub-gap; 7 - second housing; 71 - second housing body; 72 - second clamping portion; 8 - injection hole; 9 - first positioning hole; 10 - second positioning hole; 11 - through hole; 12 - first clamping slot;

[0050] 200 - power module; 201 - third housing; 202 - drive board; 203 - positioning column; 204 - DC terminal; 205 - AC terminal; 206 - heat sink; 207 - cover; X - first direction; Z - second direction; Y - third direction. DETAILED DESCRIPTION

[0051] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0052] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0053] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0055] The current detection module, controller, and vehicle provided in the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0056] Calibration involves using standard measuring instruments to test the accuracy (precision) of the component being tested, verifying whether the accuracy meets the standard. In existing technology, the output busbar is first fixed to the power module, and then the current sensor is fixed to a preset position on the power module. This requires a large fixture and measuring instruments to calibrate the current sensor's installation position, making the calibration process more complicated.

[0057] like Figures 1 to 13 As shown, the current detection module 100 according to some embodiments of the present application includes: a conductive part 1, a first shell 3, a magnetic yoke 2 and a detection component 4; the magnetic yoke 2 at least partially surrounds the conductive part 1; the detection component 4 is at least partially arranged in the magnetic field of the magnetic yoke 2; the first shell 3 is respectively connected to the conductive part 1, at least a part of the magnetic yoke 2, and at least a part of the detection component 4.

[0058] In an embodiment of the present application, the magnetic yoke 2 at least partially surrounds the conductive member 1, the detection assembly 4 is disposed within the magnetic field of the magnetic yoke 2, and the first housing 3 is respectively connected to the conductive member 1, at least a portion of the magnetic yoke 2, and at least a portion of the detection assembly 4. Thus, by integrating the detection assembly 4 into the current detection module 100, it is only necessary to calibrate the current detection module 100 when calibrating the position of the detection assembly 4. Since the current detection module 100 has few components and a small size, the calibration process is relatively simple when calibrating the current detection module 100. Furthermore, since the conductive member 1 and the detection assembly 4 are integrated into the current detection module 100, the error during assembly is relatively small, thereby improving the assembly accuracy between the conductive member 1 and the detection assembly 4 to a certain extent.

[0059] Specifically, such as Figure 2 As shown, the conductive part 1 generates a magnetic field when energized, and the magnetic yoke 2 can enhance and constrain the magnetic field distribution induced by the current to ensure measurement performance; at this time, the detection component 4 detects the magnetic field, and thus detects the current passing through the conductive part 1 based on the magnetic field strength.

[0060] Alternatively, as Figure 1 As shown, the yoke 2 at least partially surrounds the conductive member 1 along the first direction X.

[0061] In the embodiment of the present application, the magnetic yoke 2 at least partially surrounds the conductive member 1 along the first direction X. In this way, the magnetic yoke 2 can better gather the magnetic field generated by the conductive member 1 after conduction, thereby enhancing the magnetic flux density around the magnetic yoke 2 .

[0062] It should be noted that if Figure 1As shown, the first direction X, the second direction Z, and the third direction Y are perpendicular to each other; the first direction X is the width direction of the conductive element 1 , the second direction Z is the thickness direction of the conductive element 1 , and the third direction Y is the length direction of the conductive element 1 .

[0063] In some embodiments, as Figure 1 and Figure 2 As shown, positioning grooves are provided on both sides of the conductive member 1 along the first direction X, and the yoke 2 is engaged with the positioning grooves. Thus, the positioning grooves restrict the displacement of the yoke 2 in the second direction Z and the third direction Y. Furthermore, the yoke 2 can be bonded to the conductive member 1 using an adhesive medium, for example, insulating glue, double-sided tape, or the like.

[0064] It should be noted that the conductive member 1 may include a copper busbar, an aluminum busbar, an iron plate or other structural members with conductive capabilities.

[0065] Alternatively, as Figure 2 and Figure 8 As shown, the first shell 3 includes a first shell body 31 and a first clamping portion 32; the first shell body 31 is arranged on one side of the conductive part 1 along the second direction Z, and the first clamping portion 32 extends from the first shell body 31 to the side close to the conductive part 1. The first clamping portion 32 is clamped with the conductive part 1, and the first direction X and the second direction Z intersect.

[0066] In the embodiment of the present application, the first housing body 31 is disposed on one side of the conductive member 1 along the second direction Z, and the first engaging portion 32 extends from the first housing body 31 toward the side closer to the conductive member 1, so that the first engaging portion 32 engages with the conductive member 1. This facilitates assembly between the first housing body 3 and the conductive member 1.

[0067] Optionally, the magnetic yoke 2 and the detection assembly 4 are respectively clamped to the first shell body 31 .

[0068] In the embodiment of the present application, the yoke 2 and the detection assembly 4 are respectively clamped to the first housing body 31. In this way, the yoke 2 and the detection assembly 4 are fixed to a certain extent, thereby limiting the displacement and rotational freedom of the yoke 2 and the detection assembly 4.

[0069] Alternatively, as Figure 2 and Figure 8 As shown, a first slot 12 is provided on one side of the first housing body 31 close to the conductive member 1 ; the yoke 2 is at least partially disposed in the first slot 12 .

[0070] In the embodiment of the present application, a first retaining groove 12 is provided on a side of the first housing body 31 close to the conductive member 1; the yoke 2 is at least partially disposed in the first retaining groove 12. This facilitates the retaining of the yoke 2 in the first retaining groove 12, thereby limiting the displacement and degree of freedom of the yoke 2 to a certain extent.

[0071] In some embodiments, the first slot 12 has side walls along the second direction Z and side walls along the third direction Y, which contact the surface of the yoke 2 to limit the displacement of the yoke 2 in the third direction Y and the second direction Z.

[0072] Alternatively, as Figure 2 and Figure 11 As shown, there are multiple first clamping portions 32 ; the multiple first clamping portions 32 are arranged around the first shell body 31 , and the multiple first clamping portions 32 are respectively clamped to the edges of the conductive member 1 .

[0073] In the embodiment of the present application, multiple first clamping portions 32 are provided. The multiple first clamping portions 32 are arranged around the first housing body 31, and the multiple first clamping portions 32 are respectively clamped to the edge of the conductive member 1. In this way, by providing the first clamping portions 32 to clamp to the edge of the conductive member 1, the clamping strength between the first housing body 31 and the conductive member 1 is increased, thereby ensuring the relative position between the sensor 41 and the magnetic yoke 2, and the relative position between the sensor 41 and the conductive member 1.

[0074] In some embodiments, as Figure 2 As shown, the first housing body 31 is stepped, and four first clamping portions 32 can be provided, and the four first clamping portions 32 are provided at the four corners of the first housing body 31. In this way, it is possible to avoid opening holes in the conductive member 1, reducing the influence of the openings on the current passing through the conductive member 1.

[0075] Alternatively, as Figure 8 As shown, multiple first clamping parts 32 are provided on one side of the first shell body 31 close to the conductive part 1. The conductive part 1 has a first positioning hole 9 at a position corresponding to the first clamping part 32. The first clamping part 32 passes through the first positioning hole 9 and is clamped with the conductive part 1.

[0076] In the embodiment of the present application, multiple first engaging portions 32 are provided on a side of the first housing body 31 close to the conductive member 1. The conductive member 1 is provided with first positioning holes 9 at positions corresponding to the first engaging portions 32. The first engaging portions 32 pass through the first positioning holes 9 and engage with the conductive member 1. Thus, the first engaging portions 32 and the first positioning holes 9 cooperate with each other to achieve engagement between the first housing body 3 and the conductive member 1. Furthermore, since the engagement is achieved through the engaging holes, assembly between the two is facilitated.

[0077] In some embodiments, as Figure 8 As shown, the first housing body 31 is arranged in a rectangular shape, and two first clamping portions 32 can be provided, and the two first clamping portions 32 are arranged on both sides of the first housing body 31 along the second direction Z. In this way, the material used for the first housing 3 is reduced, thereby saving costs.

[0078] Alternatively, as Figure 2 and Figure 11 As shown, it also includes a second shell 7; the second shell 7 is arranged on the side of the conductive member 1 away from the first shell 3, and the second shell 7 and the conductive member 1 are enclosed to form a liquid injection cavity.

[0079] In the embodiment of the present application, by positioning the second housing 7 on the side of the conductive member 1 facing away from the first housing 3, the second housing 7 and the conductive member 1 enclose a liquid injection cavity. Thus, after the conductive member 1, the magnetic yoke 2, and the detection assembly 4 are assembled, a fixing glue can be injected into the liquid injection cavity to further fix the relative positions of the conductive member 1, the magnetic yoke 2, and the detection assembly 4, thereby avoiding the problem of large current detection errors caused by changes in the relative positions of the three.

[0080] Alternatively, as Figure 2 and Figure 11 As shown, an injection hole 8 is provided on the second shell 7, and the injection hole 8 is used to inject fixing glue.

[0081] In the embodiment of the present application, an injection hole 8 is provided in the second housing 7 for injecting fixing glue. Thus, after the conductive member 1, the magnetic yoke 2, and the detection assembly 4 are assembled, fixing glue can be injected into the first housing 3 through the injection hole 8 to further fix the relative positions of the conductive member 1, the magnetic yoke 2, and the detection assembly 4, thereby avoiding the problem of large current detection errors caused by changes in the relative positions of the three.

[0082] In some embodiments, as Figure 2 and Figure 4 As shown, a notch is provided at a position corresponding to the second shell 7 and the yoke 2. The second shell 7 can cover a portion of the yoke 2 through the notch to achieve relative sealing between the second shell 7 and the yoke 2, so that the fixing glue is not easy to flow out from the gap between the second shell 7 and the yoke 2 during glue pouring, thereby avoiding material waste.

[0083] Alternatively, as Figure 11 As shown, the second shell 7 includes a second shell body 71 and a second clamping portion 72; the second shell body 71 is arranged on the side of the conductive member 1 away from the first shell 3, one end of the second clamping portion 72 is connected to the second shell body 71, and the other end extends along the first direction X in a direction away from the second shell body 71, and the second clamping portion 72 is clamped with the first shell 3.

[0084] In the embodiment of the present application, the second housing body 71 is disposed on the side of the conductive member 1 facing away from the first housing 3. One end of the second clamping portion 72 is connected to the second housing body 71, and the other end extends along the first direction X in a direction away from the second housing body 71. The second clamping portion 72 is clamped to the first housing 3. In this way, it is possible to avoid additional holes in the conductive member 1, thereby preventing damage to the conductive member 1.

[0085] In some embodiments, as Figure 11 As shown, a second engaging portion 72 is provided on each side of the second housing body 71 along the first direction X. The second engaging portion 72 cooperates with the first engaging portion 32 of the first housing 3 to achieve engaging engagement. Of course, two second engaging portions 72 may also be provided on each side of the second housing body 71 along the first direction X. In this way, the number of second engaging portions 72 and first engaging portions 32 corresponds, thereby increasing the connection strength between the first housing 3 and the second housing 7.

[0086] Alternatively, as Figure 2 and Figure 6 As shown, the second shell 7 includes a second shell body 71 and a second clamping portion 72; the second shell body 71 is arranged on the side of the conductive member 1 away from the first shell 3, and the second clamping portion 72 extends from the second shell body 71 to the side close to the conductive member 1, and the second clamping portion 72 is clamped with the conductive member 1.

[0087] In the embodiment of the present application, the second clamping portion 72 is extended from the second housing body 71 toward the side close to the conductive member 1, so that the second clamping portion 72 is clamped to the conductive member 1. In this way, the second clamping portion 72 is provided to clamp to the conductive member 1, so as to facilitate the assembly between the second housing 7 and the conductive member 1.

[0088] In some embodiments, a limiting groove may be provided at a position corresponding to the conductive member 1 and the second clamping portion 72 , and the second clamping portion 72 is provided in the limiting groove to achieve clamping between the second shell 7 and the conductive member 1 .

[0089] Alternatively, as Figure 2 and Figure 6 As shown, the conductive member 1 is provided with a second positioning hole 10 passing through the second direction Z; the second positioning holes 10 are provided on both sides of the conductive member 1 along the third direction Y, and the second clamping portion 72 passes through the second positioning hole 10 and is clamped with the conductive member 1, and the third direction Y intersects with the second direction Z and the first direction X respectively.

[0090] In the embodiment of the present application, second positioning holes 10 are provided in the conductive member 1; the second positioning holes 10 are provided on both sides of the conductive member 1 along the second direction Z, and the second clamping portion 72 passes through the second positioning holes 10 and is clamped to the conductive member 1. In this way, by passing the second clamping portion 72 through the second positioning holes 10 and clamping to the conductive member 1, the connection strength between the second housing 7 and the conductive member 1 is increased; in addition, the second positioning holes 10 can also serve as a positioning function, facilitating the positioning of the second housing 7.

[0091] In some embodiments, as Figure 2 and Figure 6 As shown, the second positioning holes 10 are provided on both sides of the through hole 11 along the second direction Z, and the positions of the second positioning holes 10 correspond to the positions of the second clamping portions 72 .

[0092] Alternatively, as Figure 4 、 Figure 9 、 Figure 17 As shown, there are at least two magnetic yokes 2 ; at least two magnetic yokes 2 are arranged on both sides of the conductive member 1 along the first direction X, a first gap 6 is present between the at least two magnetic yokes 2 , and the detection component 4 is at least partially arranged in the first gap 6 .

[0093] In the embodiment of the present application, at least two magnetic yokes 2 are provided, and the at least two magnetic yokes 2 are disposed on both sides of the conductive member 1 along the first direction X. A first gap 6 is formed between the at least two magnetic yokes 2, and the detection assembly 4 is at least partially disposed in the first gap 6. Thus, by disposing the detection assembly 4 at least partially in the first gap 6, the detection accuracy of the detection assembly 4 is enhanced; in addition, the rational layout of the detection assembly 4 improves space utilization.

[0094] Alternatively, as Figure 2 、 Figure 4 、 Figure 8 、 Figure 9 As shown, the detection component 4 includes a sensor 41 and a circuit board 42; a through hole 11 is provided in the conductive member 1 and passes through the second direction Z, the through hole 11 corresponds to the first gap 6, the circuit board 42 is passed through the first gap 6 and the through hole 11, and the circuit board 42 is snapped into the first shell 3; the sensor is provided on the circuit board 42 and is electrically connected to the circuit board 42, the sensor 41 is provided in the first gap 6, and the first direction X and the second direction Z intersect.

[0095] In the embodiment of the present application, a through hole 11 is provided in the conductive member 1 at a position corresponding to the first gap 6. A circuit board 42 passes through the first gap 6 and the through hole 11, and the circuit board 42 is engaged with the first housing 3. The sensor 41 is attached to and electrically connected to the circuit board 42, and the sensor 41 is disposed in the first gap 6. In this manner, the engagement of the circuit board 42 with the first housing 3 restricts the displacement and rotational freedom of the circuit board 42 in the first direction X and the third direction Y, thereby restricting the displacement and rotational freedom of the sensor 41 in the first direction X and the third direction Y. This further achieves relative positioning between the sensor 41 and the yoke 2, and between the sensor 41 and the conductive member 1.

[0096] Alternatively, as Figure 6 and Figure 10 As shown, the circuit board 42 includes an extension portion 422 and a circuit board body 421; the circuit board body 421 is arranged along the second direction Z through the first shell 3 and the conductive member 1, the extension portion 422 is connected to the circuit board body 421, and a second card slot 5 is provided in the first shell 3, and the extension portion 422 is card-engaged in the second card slot 5.

[0097] In the embodiment of the present application, the circuit board body 421 is inserted through the first housing 3 and the conductive member 1 along the second direction Z, the extension portion 422 is connected to the circuit board body 421, the first housing 3 is provided with a second slot 5, and the extension portion 422 is engaged in the second slot 5. In this way, the mutual cooperation between the extension portion 422 and the slot 5 limits the displacement of the circuit board body 421 in the second direction Z, thereby limiting the displacement of the sensor 41 in the second direction Z.

[0098] In some embodiments, as Figure 2 and Figure 3 As shown, a limiting hole is provided on the side of the first housing 3 facing away from the conductive member 1, through which the circuit board body 421 passes. Thus, the circuit board body 421 cooperates with the limiting hole to limit the displacement of the circuit board body 421 in the second direction Z and the first direction X, thereby limiting the displacement of the sensor 41 in the second direction Z and the first direction X.

[0099] Alternatively, as Figure 2 and Figure 6 As shown, the slot 5 is provided on a side of the first housing 3 close to the conductive member 1 .

[0100] In the embodiment of the present application, the slot 5 is provided on the side of the first housing 3 close to the conductive member 1. In this way, the extension portion 422 is provided between the slot 5 and the conductive member 1, preventing the extension portion 422 from coming out of the slot 5.

[0101] Alternatively, as Figure 10 As shown, the latching slot 5 is provided on a side of the first housing 3 facing away from the conductive member 1 .

[0102] In the embodiment of the present application, the card slot 5 is provided on the side of the first housing 3 close to the conductive member 1. In this way, the extension portion 422 can be directly inserted into the card slot 5 to complete the fixation, which is convenient for assembly.

[0103] Alternatively, as Figure 17 As shown, the sensor 41 is a dual magnetic sensor 41; the dual magnetic sensor 41 includes a sensor body, a first differential unit and a second differential unit; the first differential unit and the second differential unit are electrically connected to the sensor body respectively, the first gap 6 includes a first sub-gap 61 and a second sub-gap 62, the conductive member 1 has a first side and a second side relatively arranged along the second direction Z, the first sub-gap 61 is arranged on the first side, and the second sub-gap 62 is arranged on the second side; the first differential unit is arranged in the first sub-gap 61, and the second differential unit is arranged in the second sub-gap 62.

[0104] In the embodiment of the present application, the sensor 41 is configured as a dual magnetic sensor 41, with the first differential unit located in the first sub-gap 61 and the second differential unit located in the second sub-gap 62. Thus, by providing two differential units to simultaneously detect the magnetic field, the effects of adverse factors such as the current AC frequency, positional errors of the sensor 41, and stray magnetic fields on the current magnitude detection are reduced.

[0105] In some embodiments, the sensor 41 is a Hall effect sensor or a magnetoresistive sensor. The sensor 41 obtains the measured current information by measuring the magnetic field generated by the current of the conductive member 1. The measurement of the sensor 41 can be electrically separated from the circuit, and non-contact measurement can be achieved to reduce the direct influence of temperature. The sensor 41 can be based on the Hall effect or the magnetoresistive effect, and the magnetoresistive effect includes anisotropic magnetoresistive (AMR), giant magnetoresistive (GMR) or tunneling magnetoresistive (TMR). The specific selection of the sensor 41 needs to be determined according to the current measurement requirements, and different types of sensors 41 need to be designed and implemented separately.

[0106] Second, as Figures 14 to 18 As shown, an embodiment of the present application proposes a controller, including a power module 200 and the current detection module 100 in the above embodiment; the current detection module 100 is electrically connected to the power module 200.

[0107] In an embodiment of the present application, the magnetic yoke 2 at least partially surrounds the conductive member 1, the detection assembly 4 is disposed within the magnetic field of the magnetic yoke 2, and the first housing 3 is respectively connected to the conductive member 1, at least a portion of the magnetic yoke 2, and at least a portion of the detection assembly 4. Thus, by integrating the detection assembly 4 into the current detection module 100, it is only necessary to calibrate the current detection module 100 when calibrating the position of the detection assembly 4. Since the current detection module 100 has few components and a small size, the calibration process is relatively simple when calibrating the current detection module 100. Furthermore, since the conductive member 1 and the detection assembly 4 are integrated into the current detection module 100, the error during assembly is relatively small, thereby improving the assembly accuracy between the conductive member 1 and the detection assembly 4 to a certain extent.

[0108] In some embodiments, the current detection module 100 and the power module 200 may be formed as an integral part. This improves the integration of the controller. Furthermore, since the sensor 41 is integrated into the current detection module 100, the space occupied by the sensor 41 itself can be reduced, thereby reducing the size of the power module 200.

[0109] In some other embodiments, Figure 14 and Figure 16 As shown, the power module 200 includes a third shell 201, a power semiconductor and a cover plate 207. The third shell 201 has a accommodating cavity, and the power semiconductor is arranged in the accommodating cavity. The cover plate 207 is arranged at the cavity opening of the accommodating cavity to cover the power semiconductor; one end of the conductive member 1 in the current detection module 100 is connected to the power semiconductor; the other end of the conductive member 1 passes through the third shell 201 and extends out, and has a connection hole connected to the electrical equipment at the extended end.

[0110] In other embodiments, Figure 16 As shown, a mounting cavity for mounting the current detection module 100 is provided in the third shell 201, and the current detection module 100 is mounted in the mounting cavity; then, an integrated injection molding process is adopted to injection-mold the current detection module 100 and the power module 200 into an integrated structure, thereby enhancing the connection strength between the two; of course, the current detection module 100 can also adopt an inlay injection molding process with the power module 200 to achieve an integrated structure of the two; it should be noted that the inlay injection molding process is a process in which an insert is pre-fixed in an appropriate position in an injection mold, and then plastic is injected to form it. After the mold is opened, the insert is tightly wrapped by the cooled and solidified plastic and buried in the plastic to obtain a product with inserts such as threads and electrodes.

[0111] In other embodiments, Figure 14 and Figure 16As shown, the power module 200 also includes a drive plate 202, a positioning column 203 and a heat sink 206; the positioning column 203 is arranged on the third shell 201, and the drive plate 202 passes through the positioning column 203 and is arranged on the side of the cover plate 207 away from the accommodating cavity, and the drive plate 202 is electrically connected to the circuit board 42; the heat sink 206 is arranged on the side of the third shell 201 away from the accommodating cavity, and is used to dissipate heat for the power module 200.

[0112] Alternatively, as Figure 14 and Figure 15 As shown, the power module 200 includes a DC terminal 204 and an AC terminal 205 ; the DC terminal 204 and the AC terminal 205 are electrically connected, and the current detection module 100 is disposed at the DC terminal 204 and / or the AC terminal 205 .

[0113] In the embodiment of the present application, the DC terminal 204 and the AC terminal 205 are electrically connected, and the current detection module 100 is provided at the DC terminal 204 and / or the AC terminal 205. In this way, it is easy to adapt to different scene requirements, thereby ensuring measurement accuracy.

[0114] In some embodiments, as Figure 14 As shown, the upper side of the power module 200 is a DC terminal 204, which is electrically connected to the battery. The lower side of the power module 200 is an AC terminal 205, which is electrically connected to the motor. The DC terminal 204 and AC terminal 205 are electrically connected via a power semiconductor, which converts DC power into AC power. In this way, the current detection module 100 can more accurately detect the current output by the battery to the motor, thereby adjusting parameters such as the motor's output torque in real time.

[0115] Thirdly, as Figure 19 As shown, an embodiment of the present application proposes a controller processing method, which processes the controller as described above, including:

[0116] Step 101: Install a conductive member, a magnetic yoke, and a detection assembly in a first housing to form a current detection module.

[0117] Specifically, the magnetic yoke is first clamped on both sides of the conductive member along the first direction, the detection component is then inserted into the conductive member, and then the first shell is clamped with the magnetic yoke, the detection component and the conductive member to form the current detection module.

[0118] Step 102: Calibrate the position of the detection component in the current detection module.

[0119] Specifically, after the current detection module is assembled, the position of the detection component in the current detection module is calibrated using a fixture and a measuring instrument; then, the current detection modules that have passed the calibration are screened out and installed in the power module; the calibration standard of the current detection module can be flexibly set according to actual conditions.

[0120] Step 103: Install the calibrated and qualified current detection module into the power module.

[0121] Specifically, the current detection module that has passed the calibration in step 102 is installed at a preset position of the power module; the preset position may be a DC terminal of the power module or an AC terminal of the power module.

[0122] In an embodiment of the present application, a current detection module is formed by installing a conductive member, a magnetic yoke, and a detection assembly in a first housing; the position of the detection assembly in the current detection module is calibrated; and the calibrated current detection module is installed in a power module. This facilitates calibrating the position of the detection assembly by simply calibrating the detection assembly within the current detection module. Because the current detection module has few components and is compact, the calibration process is relatively simple. Furthermore, integrating the current detection module into the power module improves the integration between the current detection module assembly and the power module.

[0123] In a fourth aspect, an embodiment of the present application proposes a vehicle, comprising the current detection module 100 in the above embodiment; or, a controller in the above embodiment.

[0124] In an embodiment of the present application, the magnetic yoke 2 at least partially surrounds the conductive member 1, the detection assembly 4 is disposed within the magnetic field of the magnetic yoke 2, and the first housing 3 is respectively connected to the conductive member 1, at least a portion of the magnetic yoke 2, and at least a portion of the detection assembly 4. Thus, by integrating the detection assembly 4 into the current detection module 100, it is only necessary to calibrate the current detection module 100 when calibrating the position of the detection assembly 4. Since the current detection module 100 has few components and a small size, the calibration process is relatively simple when calibrating the current detection module 100. Furthermore, since the conductive member 1 and the detection assembly 4 are integrated into the current detection module 100, the error during assembly is relatively small, thereby improving the assembly accuracy between the conductive member 1 and the detection assembly 4 to a certain extent.

[0125] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0126] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A current detection module (100), characterized in that: include: Conductive member (1), first housing (3), magnetic yoke (2) and detection assembly (4); The magnetic yoke (2) at least partially surrounds the conductive member (1); The detection component (4) is at least partially disposed within the magnetic field of the magnetic yoke (2); The first shell (3) is respectively connected to the conductive member (1), at least a portion of the magnetic yoke (2), and at least a portion of the detection component (4).

2. The current detection module (100) according to claim 1, characterized in that The magnetic yoke (2) at least partially surrounds the conductive member (1) along a first direction (X).

3. The current detection module (100) according to claim 2, characterized in that The first housing (3) comprises a first housing body (31) and a first clamping portion (32); The first shell body (31) is arranged on one side of the conductive member (1) along the second direction (Z), the first clamping portion (32) extends from the first shell body (31) to a side close to the conductive member (1), and the first clamping portion (32) is clamped to the conductive member (1); the first direction (X) and the second direction (Z) intersect.

4. The current detection module (100) according to claim 3, characterized in that The magnetic yoke (2) and the detection assembly (4) are respectively clamped to the first housing body (31).

5. The current detection module (100) according to claim 3, characterized in that: A first slot (12) is provided on one side of the first shell body (31) close to the conductive member (1); and the magnetic yoke (2) is at least partially disposed in the first slot (12).

6. The current detection module (100) according to claim 3, characterized in that: The first clamping portion (32) is provided in plurality; A plurality of the first clamping portions (32) are arranged around the first shell body (31), and the plurality of the first clamping portions (32) are respectively clamped to the edges of the conductive member (1).

7. The current detection module (100) according to claim 3, characterized in that A plurality of first clamping portions (32) are provided on a side of the first shell body (31) close to the conductive member (1); the conductive member (1) is provided with a first positioning hole (9) at a position corresponding to the first clamping portion (32); the first clamping portion (32) passes through the first positioning hole (9) and is clamped with the conductive member (1).

8. The current detection module (100) according to claim 2, characterized in that: It also includes a second shell (7); the second shell (7) is arranged on a side of the conductive member (1) facing away from the first shell (3), and the second shell (7) and the conductive member (1) are enclosed to form a liquid injection cavity.

9. The current detection module (100) according to claim 8, characterized in that: The second shell (7) is provided with an injection hole (8), and the injection hole (8) is used for injecting fixing glue.

10. The current detection module (100) according to claim 8, characterized in that: The second housing (7) comprises a second housing body (71) and a second clamping portion (72); The second shell body (71) is arranged on a side of the conductive member (1) facing away from the first shell (3); one end of the second clamping portion (72) is connected to the second shell body (71), and the other end extends along the first direction (X) in a direction away from the second shell body (71); the second clamping portion (72) is clamped to the first shell (3).

11. The current detection module (100) according to claim 8, characterized in that: The second housing (7) comprises a second housing body (71) and a second clamping portion (72); The second shell body (71) is arranged on a side of the conductive member (1) facing away from the first shell (3), and the second clamping portion (72) extends from the second shell body (71) to a side close to the conductive member (1), and the second clamping portion (72) is clamped to the conductive member (1).

12. The current detection module (100) according to claim 11, characterized in that: The conductive member (1) is provided with a second positioning hole (10) extending through the conductive member along a second direction (Z); The second positioning hole (10) is provided on both sides of the conductive member (1) along a third direction (Y), the second clamping portion (72) passes through the second positioning hole (10) and is clamped with the conductive member (1), and the third direction (Y) intersects with the second direction (Z) and the first direction (X) respectively.

13. The current detection module (100) according to claim 2, characterized in that: The number of the magnetic yokes (2) is set to be at least two; At least two of the magnetic yokes (2) are arranged on both sides of the conductive member (1) along the first direction (X), a first gap (6) exists between the at least two magnetic yokes (2), and the detection component (4) is at least partially arranged in the first gap (6).

14. The current detection module (100) according to claim 13, characterized in that: The detection component (4) includes a sensor (41) and a circuit board (42); The conductive member (1) is provided with a through hole (11) extending along a second direction (Z), the through hole (11) corresponding to the first gap (6), the circuit board (42) passing through the first gap (6) and the through hole (11), the circuit board (42) being snap-fitted to the first housing (3); the sensor (41) being provided on the circuit board (42) and electrically connected to the circuit board (42), the sensor (41) being provided in the first gap (6); the first direction (X) and the second direction (Z) intersecting.

15. The current detection module (100) according to claim 14, characterized in that: The circuit board (42) comprises an extension portion (422) and a circuit board body (421); The circuit board body (421) is provided through the first shell (3) and the conductive member (1) along the second direction (Z), the extension portion (422) is connected to the circuit board body (421), a second card slot (5) is provided in the first shell (3), and the extension portion (422) is card-engaged in the second card slot (5).

16. The current detection module (100) according to claim 15, characterized in that: The second slot (5) is provided on a side of the first housing (3) close to the conductive member (1).

17. The current detection module (100) according to any one of claims 14 to 16, characterized in that: The sensor (41) is a dual magnetic sensor; The dual magnetic sensor includes a sensor body, a first differential unit and a second differential unit, wherein the first differential unit and the second differential unit are electrically connected to the sensor body respectively; The first gap (6) comprises a first sub-gap (61) and a second sub-gap (62); the conductive member (1) has a first side and a second side arranged opposite to each other along the second direction (Z); the first sub-gap (61) is arranged on the first side, and the second sub-gap (62) is arranged on the second side; the first differential unit is arranged in the first sub-gap (61), and the second differential unit is arranged in the second sub-gap (62).

18. A controller, characterized in that: It comprises a power module (200) and a current detection module (100) as claimed in any one of claims 1 to 17; the current detection module (100) is electrically connected to the power module (200).

19. The controller according to claim 18, characterized in that The power module (200) includes a DC terminal (204) and an AC terminal (205); The DC end (204) and the AC end (205) are electrically connected, and the current detection module (100) is provided at the DC end (204) and / or the AC end (205).

20. A vehicle, characterized in that: The method comprises a current detection module (100) as claimed in any one of claims 1 to 17; or a controller as claimed in any one of claims 18 to 19.

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