Power module, electric control inverter and vehicle

Abstract

The present disclosure relates to a power module, an electric control inverter and a vehicle. The power module comprises a power module body, magnetic cores and current sensors. The power module body comprises a base, a power unit located on the base, and a plurality of phase terminals extending outwards from the power unit and used for transmitting a phase current. The magnetic cores have one-to-one correspondence to the phase terminals; in a plane perpendicular to the extension direction of the phase terminals, the magnetic cores partially surrounds the phase terminals and are each provided with an opening; and the current sensors have one-to-one correspondence to the magnetic cores, and are arranged in the openings. According to the present disclosure, the magnetic cores are integrated in the power module, and the magnetic cores surround the corresponding phase terminals, so that a magnetic core barrier having a magnetic field shielding effect is formed among the phase terminals of the power module, improving the anti-crosstalk capability among the phase terminals, and thus improving the sampling precision of the current sensors.

Description

Power module, electric control inverter and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202420455178.4 and application date of March 8, 2024, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present disclosure relates to the technical field of power semiconductor devices, and in particular to a power module, an electronically controlled inverter, and a vehicle. Background Art

[0004] With the continuous development of social economy, cars have become an indispensable part of people's lives. At present, with the rapid development of the new energy vehicle market, industry competition has become increasingly fierce. Reducing the size of the electric control inverter and increasing the power density of the electric control inverter has become a major trend.

[0005] In existing technology, to reduce the size of electronically controlled inverters, current sensors are typically crimped into the plastic-encapsulated openings of the power module's phase terminals (e.g., phase copper busbars). The current sensors are integrated into the power module. While this reduces the size of the electronically controlled inverter and increases its power density, magnetic field crosstalk between the phase terminals reduces the current sensor's sampling accuracy. Summary of the Invention

[0006] In order to solve the above technical problems, the present disclosure provides a power module, an electronically controlled inverter and a vehicle to shield the magnetic field crosstalk between phase terminals and improve the sampling accuracy of the current sensor.

[0007] An embodiment of the present disclosure provides a power module, comprising: a power module body, a magnetic core, and a current sensor;

[0008] The power module body includes a base, a power unit located on the base, and a plurality of phase terminals extending outward from the power unit for transmitting phase current;

[0009] The magnetic core is arranged in a one-to-one correspondence with the phase terminal. In a plane perpendicular to the extension direction of the phase terminal, the magnetic core portion is arranged around the phase terminal and has an opening. The current sensor is arranged in a one-to-one correspondence with the magnetic core, and the current sensor is placed in the opening.

[0010] Optionally, a length of the magnetic core in the extending direction of the phase terminal is greater than a length of the current sensor in the extending direction of the phase terminal.

[0011] Optionally, the opening is arranged on a side of the magnetic core facing away from the base.

[0012] Optionally, the power module further includes a circuit board, which is fixed on the base, and the current sensor is mounted on a surface of the circuit board facing the base.

[0013] Optionally, the circuit board seals the opening.

[0014] Optionally, two ends of the magnetic core located at the opening pass through the circuit board.

[0015] Optionally, the power module body further includes a plastic-encapsulated shell, which covers the magnetic core; and / or the plastic-encapsulated shell covers a portion of the phase terminal corresponding to the position of the magnetic core.

[0016] Optionally, the power module further includes a direct copper clad ceramic substrate, the base is a heat sink, the direct copper clad ceramic substrate is located on a surface of the base facing the power unit, and the phase terminal is in contact with the direct copper clad ceramic substrate.

[0017] An embodiment of the present disclosure further provides an electronically controlled inverter, comprising any power module as described above.

[0018] An embodiment of the present disclosure also provides a vehicle, comprising the electronically controlled inverter as described above.

[0019] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art:

[0020] In the solution provided by the embodiments of the present disclosure, a magnetic core is integrated into the power module. The magnetic core surrounds the phase terminals and is arranged one-to-one with each phase terminal. This creates an electromagnetic barrier between the phase terminals within the power module that can shield the magnetic field, thereby shielding the magnetic field crosstalk between the phase terminals. The current sensor is placed within the power module through the opening of the magnetic core. The magnetic field shielding effect provided by the magnetic core prevents the current sensor from being interfered with by the magnetic field generated by surrounding phase terminals when collecting the magnetic field generated by the corresponding phase terminal, thereby improving the sampling accuracy of the current sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0022] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] FIG1 is a schematic diagram of a power module structure provided by an embodiment of the present disclosure;

[0024] FIG2 is a schematic diagram showing the dimensional relationship between a magnetic core and a current sensor provided by an embodiment of the present disclosure;

[0025] FIG3 is an exploded view of a power module provided by an embodiment of the present disclosure;

[0026] FIG4 is a cross-sectional view of a power module provided in an embodiment of the present disclosure;

[0027] FIG5 is a schematic diagram of the positional relationship between a magnetic core and a circuit board provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0030] The electronically controlled inverter (also known as the motor control inverter) is the energy conversion component of an electric vehicle. Its core function is to achieve the inversion function from DC to AC. The power module is an indispensable component of the electronically controlled inverter, used for switching control to achieve energy conversion. Simultaneously, the motor controller samples the phase current output by the power module and then controls the switching timing of the power module full-bridge using a space vector pulse modulation algorithm, thereby achieving closed-loop control of the phase current and ultimately controlling the motor torque and speed. Therefore, phase current sampling in the electronically controlled inverter is particularly important for achieving high-performance motor control.

[0031] In existing technology, to reduce the size of electronically controlled inverters, current sensors are typically crimped into the plastic-encapsulated openings of the power module's phase terminals (e.g., phase copper busbars). The current sensors are integrated into the power module. While this reduces the size of the electronically controlled inverter and increases its power density, magnetic field crosstalk between the phase terminals reduces the current sensor's sampling accuracy.

[0032] In response to the above problems, the embodiments of the present disclosure provide a power module, an electric-controlled inverter and a vehicle. By integrating a magnetic core in the power module and arranging the magnetic core around the corresponding phase terminals, a magnetic core barrier that can shield the magnetic field exists between the phase terminals of the power module, thereby improving the anti-crosstalk capability between the phase terminals and thereby improving the sampling accuracy of the current sensor.

[0033] The following describes, in conjunction with the accompanying drawings, a power module, an electronically controlled inverter, and a vehicle provided by embodiments of the present disclosure.

[0034] FIG1 is a schematic diagram of a power module structure provided by an embodiment of the present disclosure. As shown in FIG1 , the power module includes: a power module body, a magnetic core 200 and a current sensor 300;

[0035] The power module body includes a base 110 , a power unit 120 located on the base 110 , and a plurality of phase terminals 130 extending outward from the power unit 120 for transmitting phase current.

[0036] The magnetic core 200 is arranged in a one-to-one correspondence with the phase terminal 130. In a plane perpendicular to the extension direction of the phase terminal 130, the magnetic core 200 is partially arranged around the phase terminal 130 and has an opening. The current sensor 300 is arranged in a one-to-one correspondence with the magnetic core 200, and the current sensor 300 is placed in the opening.

[0037] Exemplarily, the magnetic core 200 surrounds the phase terminal 130 in a plane perpendicular to the extension direction of the phase terminal 130 and is provided with an opening. The current sensor 300 can be placed in the magnetic core through the opening provided in the magnetic core 200 .

[0038] It should be noted that the opening direction of the magnetic core 200 can be any direction that is convenient for placing the current sensor 300 in the opening, and is not specifically limited here.

[0039] For example, multiple phase terminals 130 are arranged along the circumference of the power module body. During operation, the power module transmits phase current through the phase terminals 130. When the phase current flows through the phase terminals 130, the phase terminals 130 generate an outwardly diverging magnetic field. The current sensor 300 outputs a voltage by sampling the magnetic field of the corresponding phase terminal 130. However, due to the multiple phase terminals 130 provided on the power module, interference may occur between the magnetic fields emitted by the phase terminals 130. This may cause the current sensor 300 to sample a magnetic field that has been interfered with by the surrounding magnetic field, thereby affecting the sampling accuracy of the current sensor 300. The magnetic core 200 can be placed in the gap between the existing phase terminals 130 and the base 110 in the power module, eliminating the need to adjust the electrical layout within the power module. The module's power density is calculated by calculating the ratio of the module's output power to its overall volume. While the power module's performance remains unchanged, the increase in the power module's volume is small, thereby ensuring that the power density of the power module itself does not decrease. Since the current sensor with an integrated magnetic core is large in size, the power density of the power module installed with the current sensor will be reduced. Therefore, the present disclosure integrates a magnetic core on the power module, so that the power module does not need to use a current sensor with an integrated magnetic core. Only a smaller current sensor without a magnetic core needs to be used. This ensures that the power module will not be too large due to the excessive size of the current sensor, thereby ensuring that the power density of the power module itself will not be reduced.

[0040] The magnetic core 200 is arranged in a one-to-one correspondence with the phase terminals 130 and is disposed around each phase terminal 130, providing each phase terminal 130 with a magnetic core barrier that acts as a magnetic field shield. In this case, magnetic flux leakage occurs only in the direction of the magnetic core 200's opening and in the direction in which the phase terminal 130 extends. Magnetic fields in directions other than these two directions are confined within the magnetic core 200. This prevents the magnetic field emitted by the magnetic core 200 from being interfered with by magnetic fields leaking from adjacent phase terminals 130 in directions other than these two directions, thereby improving the crosstalk resistance between the phase terminals 130. This enhanced crosstalk resistance between the phase terminals 130 prevents the magnetic field emitted by a phase terminal 130 from being interfered with by the magnetic fields emitted by adjacent phase terminals 130, which could increase the magnetic field intensity detected by the corresponding current sensor 300. This, in turn, prevents an increase in the voltage output by the current sensor 300 due to the increased detected magnetic field intensity, thereby improving the sampling accuracy of the current sensor. In addition, the magnetic field emitted by the phase terminal 130 can be gathered by the magnetic core 200 without being interfered with by other magnetic fields, so that the current sensor 300 arranged at the opening of the phase terminal 130 can collect a magnetic field with less interference and greater intensity, thereby improving the sampling accuracy of the current sensor.

[0041] It should be noted that FIG1 exemplarily illustrates three phase terminals 130 and the corresponding magnetic core 200 and current sensor 300 , and exemplarily illustrates the shape of the magnetic core 200 and its positional relationship with the phase terminals 130 and the current sensor 300 , without any specific limitation herein.

[0042] In some embodiments, Figure 2 is a schematic diagram of the size relationship between a magnetic core and a current sensor provided in an embodiment of the present disclosure. As shown in Figure 2, the length of the magnetic core 200 in the extension direction X of the phase terminal 130 is greater than the length of the current sensor 300 in the extension direction X of the phase terminal 130.

[0043] For example, the length of the magnetic core 200 in the extension direction X of the phase terminal 130 is greater than the length of the current sensor 300 in the extension direction X of the phase terminal 130. This allows the current sensor 300 to be completely enclosed within the magnetic core 200, achieving spatial shielding of the magnetic field while preventing the collection of magnetic fields leaking from phase terminals 130 other than the corresponding phase terminal 130 due to the length of the current sensor 300 in the extension direction X exceeding the length of the magnetic core 200 in the extension direction X. Through the above-described arrangement, the present disclosure completely encloses the current sensor 300 within the magnetic core 200, ensuring that the current sensor 300 does not collect magnetic fields emitted by adjacent phase terminals 130. Furthermore, because the magnetic core 200 can also focus the magnetic fields emitted by the phase terminals 130, the current sensor 300 completely enclosed within the magnetic core 200 can collect magnetic fields with less interference and greater intensity, thereby further improving the sampling accuracy of the current sensor.

[0044] In some embodiments, referring again to FIG. 1 , the opening is disposed on a side of the magnetic core 200 facing away from the base 110 .

[0045] For example, because the phase terminals 130 are horizontally arranged around the power unit 120, crosstalk between the phase terminals 130 is relatively severe in the horizontal direction. To address this, the present disclosure arranges the opening of the magnetic core 200 on the side of the magnetic core 200 facing away from the base 110, that is, the opening of the magnetic core 200 is vertically upward. This shields the magnetic field emitted horizontally by the phase terminals 130, further improving the anti-crosstalk capability between the phase terminals 130.

[0046] In some embodiments, Figure 3 is an exploded view of a power module provided in an embodiment of the present disclosure, and Figure 4 is a cross-sectional view of a power module provided in an embodiment of the present disclosure. As shown in Figures 3 and 4, the power module also includes a circuit board 400, and the circuit board 400 is fixed on the base 110. The current sensor 300 is mounted on the surface of the circuit board 400 facing the base 110.

[0047] Specifically, the circuit board 400 includes a fixing through hole 401, and the base 110 includes a fixing female seat 111. The fixing through hole 401 and the fixing female seat 111 are arranged in a one-to-one correspondence. First, the fixing through hole 401 is aligned with the fixing female seat 111. After alignment, the circuit board 400 can be fixed to the base 110 by installing screws, thereby fixing the relative position of the circuit board 400 and the base 110. The power unit is arranged on the base 110 and the phase terminal 130 is an outward extension of the power unit. Therefore, since the relative position of the circuit board 400 and the base 110 is fixed, and the relative position of the power unit and the base 110 is also fixed, the positional relationship between the phase terminal 130 and the circuit board 300 is also fixed. In addition, since the magnetic core 200 is arranged around the phase terminal 130 and the current sensor 300 is arranged at the opening position of the magnetic core 200, the position of the magnetic core 200 relative to the circuit board 400 can be determined, and then the relative position of the current sensor 300 and the circuit board 400 can be determined. Based on the relative positional relationship between the current sensor 300 and the circuit board 400, the current sensor 300 can be mounted on the circuit board 400. Since the current sensor 300 needs to be positioned within the opening of the magnetic core 200, and the magnetic core 200 is positioned on the side of the circuit board 400 facing the base 110, the current sensor 300 needs to be mounted on the surface of the circuit board 400 facing the base 110. By mounting the current sensor 300 on the circuit board 300 and fixing the relative positions of the components within the power module, the present disclosure reduces the vibration displacement of the current sensor 300 relative to the magnetic core 200 or the phase terminal 130 when the power module vibrates, or even eliminates it. This allows the current sensor 300 to remain at the location with the maximum magnetic field, further improving the sampling accuracy of the current sensor.

[0048] In some embodiments, a circuit board seals the opening.

[0049] Specifically, when the circuit board is fixed to the base, the circuit board will seal the opening of the magnetic core accordingly, and at the same time, the current sensor disposed on the surface of the circuit board facing the base will be sealed within the magnetic core. The circuit board is also provided with an electromagnetic shielding layer, which is equivalent to placing the current sensor and the phase terminal within a four-end closed magnetic field shielding barrier. This can shield the magnetic field emanating outward in directions perpendicular to the extension direction of the phase terminal, preventing the phase terminal from leaking magnetic fields outward from the opening direction of the magnetic core. At the same time, it can also shield the magnetic field emanating from adjacent phase terminals in directions perpendicular to the extension direction of the phase terminal, thereby improving the anti-crosstalk capability between the phase terminals. Furthermore, the four-end closed magnetic field shielding barrier formed by the magnetic core and the circuit board can also concentrate the magnetic field emitted by the phase terminal, so that the current sensor can collect a magnetic field with less interference and greater intensity, thereby improving the sampling accuracy of the current sensor.

[0050] In some embodiments, FIG5 is a schematic diagram of the positional relationship between a magnetic core and a circuit board provided in an embodiment of the present disclosure. As shown in FIG5 , both ends of the magnetic core 200 located at the opening pass through the circuit board 400 .

[0051] For example, the two ends of the magnetic core 200 at the opening pass through the circuit board 400 and extend beyond the circuit board 400, so that the magnetic core 200 and the circuit board 400 can form a complete magnetic field shielding area. At this time, the phase terminal 130 only has a magnetic field in the direction extending toward the phase terminal, further improving the anti-crosstalk capability between adjacent phase terminals 130. It can also avoid the fact that the two ends of the magnetic core 200 do not pass through the circuit board 400, resulting in a gap between the magnetic core 200 and the circuit board 400, which in turn causes magnetic leakage from the phase terminal and affects the sampling accuracy of the current sensor. At the same time, the height of the magnetic core 200 is no higher than the height of the original signal terminal in the power module, so that the setting of the magnetic core 200 does not increase the height of the power module, thereby avoiding the setting of the magnetic core 200 causing an increase in the volume of the power module.

[0052] It should be noted that the two ends of the magnetic core 200 at the opening can be flush with the circuit board 400 after passing through the circuit board 400, or other lengths of the two ends that can enable the magnetic core 200 and the circuit board 400 to form a closed magnetic field shielding area, which is not specifically limited here.

[0053] In some embodiments, referring to FIG. 4 , the power module body further includes a plastic shell 140 , which covers the magnetic core 200 ; and / or the plastic shell 140 covers a portion of the phase terminal 130 corresponding to the position of the magnetic core 200 .

[0054] For example, the portion where the phase terminal 130 and the magnetic core 200 overlap in the vertical direction corresponds to the portion where the phase terminal 130 and the magnetic core 200 are located. The plastic casing 140 can enclose the portion of the phase terminal 130 corresponding to the portion where the magnetic core 200 is located. The plastic casing 140 can completely enclose the magnetic core 200 and simultaneously secure it to the base 110 of the power module body. Alternatively, the plastic casing 140 can only enclose the portion of the magnetic core 200 corresponding to the portion where the phase terminal 130 is located and secure it to the base 110 of the power module body, thereby integrating the magnetic core 200 into the power module. Furthermore, the phase terminal 130 can be passed through the plastic housing 140. In this case, the plastic housing 140 can insulate and separate the magnetic core 200 from the phase terminal 130, thereby preventing a short circuit between the magnetic core 200 and the phase terminal 130. This could lead to an abnormal magnetic field emitted by the phase terminal 130, causing the current sensor 300 to collect erroneous magnetic field data, thereby preventing a reduction in the sampling accuracy of the current sensor 300. Furthermore, because the magnetic core 200 and the phase terminal 130 can be fixed by the plastic housing 140, the relative position between the magnetic core 200 and the phase terminal 130 is also fixed, thereby also fixing the relative position of the current sensor 300 to the magnetic core 200 and the phase terminal 130. This reduces the vibration displacement of the current sensor 300 relative to the magnetic core 200 or the phase terminal 130, or even eliminates it, allowing the current sensor 300 to remain at the location with the maximum magnetic field, further improving the sampling accuracy of the current sensor 300.

[0055] In some embodiments, the power module further includes a direct copper clad ceramic substrate, the base is a heat sink, the direct copper clad ceramic substrate is located on a surface of the base facing the power unit, and the phase terminal contacts the direct copper clad ceramic substrate.

[0056] Specifically, a plurality of IGBT chips and a diode chip are provided in the power unit. The plurality of IGBT chips and the diode chip form an upper bridge arm and a lower bridge arm, and the direct copper-clad ceramic substrate is electrically connected to the midpoint of the bridge arm between the upper bridge arm and the lower bridge arm. The direct copper-clad ceramic substrate can collect the phase currents in the IGBT chips and the diode chips in the upper and lower bridge arms at the midpoint of the bridge arm, and output the collected phase currents through the phase terminals in contact with the direct copper-clad ceramic substrate, thereby further improving the current output capacity of the phase terminal. The direct copper-clad ceramic substrate is provided between the power unit and the heat sink, and the direct copper-clad ceramic substrate is in contact with the heat sink, thereby achieving indirect contact between the phase terminal and the heat sink. Since the current output capacity of the phase terminal is further enhanced, the current output by the phase terminal is larger when the power module is working, and the phase terminal itself has a certain resistance value, so the heat generated by the phase terminal when the current flows through the phase terminal is greater. At this point, the heat generated by the phase terminals is transferred to the heat sink via the direct copper-clad ceramic substrate, dissipating heat from the phase terminals and preventing damage to the power modules due to excessive heat generation at the phase terminals caused by prolonged operation. The direct copper-clad ceramic substrate also insulates the power cells from the heat sink, preventing short circuits between the two, which could cause abnormal grounding and potentially lead to failure.

[0057] In some embodiments, the magnetic core is U-shaped.

[0058] For example, the vertical core parts at both ends of the U-shaped core will become the N pole and the S pole respectively during the operation of the power module. Since the vertical core parts at both ends of the U-shaped core are parallel to each other, the magnetic field emitted by the phase terminal can be changed from an arc to a horizontal line, thereby ensuring that the distribution of the magnetic field is more uniform, and then the current sensor can collect a uniform magnetic field, further ensuring the sampling accuracy of the current sensor.

[0059] It should be noted that the shape of the magnetic core can also be other shapes with openings besides the U shape, such as a C shape. The shape of the magnetic core can be set according to actual conditions and is not specifically limited here.

[0060] It should be noted that the magnetic core can be fixed by, for example, a plastic package shell and a base, or by other means, which are not specifically limited here.

[0061] An embodiment of the present disclosure further provides an electronically controlled inverter, comprising any power module as described above.

[0062] The electronically controlled inverter also includes a regulation module and a control module. The current sensor within the power module is electrically connected to the control module via the regulation module. Because the control module has different requirements for the voltage signal output by the current sensor, the regulation module is required to adjust the voltage signal collected by the current sensor.

[0063] Exemplarily, the regulation module includes a voltage divider circuit. For example, if the voltage signal collected and output by the current sensor is 5V, and the voltage signal required by the control module is 2.5V, the voltage signal collected and output by the current sensor can be divided by the voltage divider circuit in the regulation module to output a 2.5V voltage signal to the control module to meet the control module's requirements.

[0064] Exemplarily, the regulation module includes a boost circuit. For example, if the voltage signal collected and output by the current sensor is 2.5V, and the voltage signal required by the control module is 5V, the voltage signal collected and output by the current sensor can be boosted by the boost circuit in the regulation module to output a 5V voltage signal to the control module to meet the control module's requirements.

[0065] It should be noted that the regulation module may also include circuits such as filter circuits for regulating voltage signals, and the regulation module may include one or more circuits such as voltage divider circuits, boost circuits and filter circuits, which are not specifically limited here.

[0066] An embodiment of the present disclosure also provides a vehicle, comprising the electronically controlled inverter as described above.

[0067] The vehicle disclosed in the above embodiment has the same or corresponding beneficial effects as the electronically controlled inverter disclosed in the above embodiment, and will not be described again here to avoid repetition.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0069] The above are merely specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not limited to these embodiments, but is to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A power module, comprising: Power module body, magnetic core and current sensor; The power module body includes a base, a power unit located on the base, and a plurality of phase terminals extending outward from the power unit for transmitting phase current; The magnetic core is arranged in a one-to-one correspondence with the phase terminal. In a plane perpendicular to the extension direction of the phase terminal, the magnetic core portion is arranged around the phase terminal and has an opening. The current sensor is arranged in a one-to-one correspondence with the magnetic core, and the current sensor is placed in the opening. 2 . The power module according to claim 1 , wherein a length of the magnetic core in an extending direction of the phase terminal is greater than a length of the current sensor in the extending direction of the phase terminal. 3 . The power module according to claim 1 , wherein the opening is provided on a side of the magnetic core facing away from the base. 4 . The power module according to claim 3 , further comprising a circuit board, wherein the circuit board is fixed on the base, and the current sensor is mounted on a surface of the circuit board facing the base. The power module according to claim 4 , wherein the circuit board seals the opening. The power module according to claim 5 , wherein both ends of the magnetic core located at the opening pass through the circuit board.

7. The power module according to any one of claims 1 to 6, wherein the power module body further comprises a plastic shell, wherein the plastic shell covers the magnetic core; and / or the plastic shell covers a portion of the phase terminal corresponding to a position of the magnetic core.

8. The power module according to any one of claims 1 to 7, further comprising a direct-clad copper ceramic substrate, the base being a heat sink, the direct-clad copper ceramic substrate being located on a surface of the base facing the power unit, and the phase terminal being in contact with the direct-clad copper ceramic substrate.

9. An electronically controlled inverter comprising the power module according to any one of claims 1 to 8.

10. A vehicle comprising the electronically controlled inverter according to claim 9.

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