Diverter, new energy automobile and energy storage equipment

Abstract

The utility model discloses a diverter, a new energy automobile and an energy storage device, and relates to the technical field of diverters, the diverter comprises a diverter body, and the diverter body is provided with an accommodating hole; the magnetic resistance detection assembly is at least partially arranged in the accommodating hole; the magnetic resistance detection assembly is used for detecting a magnetic field generated by current flowing through the shunt body and outputting a corresponding magnetic detection signal; the temperature control assembly is used for detecting the temperature of the periphery of the accommodating hole and adjusting the temperature of the shunt body to be consistent according to the temperature of the periphery of the accommodating hole; the utility model aims to solve the technical problem that a thermoelectric force phenomenon occurs when a current divider detects current.

Description

Technical Field

[0001] This utility model relates to the field of splitter technology, and in particular to a splitter, a new energy vehicle, and an energy storage device. Background Technology

[0002] In new energy vehicles, shunts are often connected in series in the circuit under test to detect the current flowing through it and output the detection result. In one exemplary technology, to increase detection accuracy, a current detection method is added to one end of the shunt. This method involves creating a structure at one end of the shunt for mounting the detection component. The current flowing through the shunt causes the temperature of the shunt's detection component to rise. Due to the heat conduction characteristics, the temperature at the end of the shunt corresponding to the created structure also rises, while the temperature at the other end of the shunt, being far from the heat source, remains constant. Thus, the shunt's temperature distribution is uneven during current detection, resulting in a thermoelectric potential phenomenon. This thermoelectric potential phenomenon interferes with the accuracy of current detection, causing deviations in the detection results. Utility Model Content

[0003] The main purpose of this utility model is to propose a shunt, a new energy vehicle and an energy storage device, which aims to solve the technical problem that the shunt will exhibit thermoelectric potential when detecting current.

[0004] To achieve the above objectives, this utility model proposes a shunt, comprising:

[0005] The splitter body is provided with a receiving hole;

[0006] A magnetoresistive detection component is at least partially disposed within the receiving hole; the magnetoresistive detection component is used to detect the magnetic field generated by the current flowing through the shunt body and output a corresponding magnetic detection signal.

[0007] A temperature control component is used to detect the temperature around the receiving hole and adjust the temperature of the distributor body to be more uniform based on the temperature around the receiving hole.

[0008] In one embodiment, the temperature control component includes a temperature adjustment component and a plurality of temperature sensors. The temperature adjustment component is connected to the plurality of temperature sensors. At least one of the temperature sensors is disposed on the distributor body and near the receiving hole, or at least one of the temperature sensors is disposed on the hole wall of the receiving hole; at least one of the temperature sensors is disposed on the distributor body at a position away from the receiving hole.

[0009] The temperature control component is used to adjust the temperature of the shunt body to be more uniform based on the detection signals from the multiple temperature sensors.

[0010] In one embodiment, the shunt further includes a substrate disposed on one side of the shunt body; the magnetoresistive detection component is disposed on the substrate at a position corresponding to the receiving hole, and at least partially extends into the receiving hole.

[0011] In one embodiment, the shunt further includes a substrate disposed on one side of the shunt body; the magnetoresistive detection assembly includes a magnetic sensing part and a magnetoresistive detection module, the magnetic sensing part being disposed within the receiving hole; the magnetoresistive detection module being disposed on the substrate at a position corresponding to the receiving hole, the magnetoresistive detection module being used to detect the magnetic field generated by the current flowing through the magnetic sensing part and output a corresponding magnetic detection signal.

[0012] In one embodiment, the shunt body includes a current sensing element, a first conductive element, and a second conductive element. The first conductive element and the second conductive element are disposed opposite to each other at both ends of the shunt body. The first conductive element has a first receiving hole, and the second conductive element has a second receiving hole. The first receiving hole and the second receiving hole are symmetrically arranged about the shunt body.

[0013] A first magnetoresistive detection component is at least partially disposed within the first receiving hole; the first magnetoresistive detection component is used to detect the magnetic field generated by the current flowing through the first conductive element and output a corresponding first magnetic detection signal.

[0014] The second magnetoresistive detection component is at least partially disposed within the second accommodating hole; the second magnetoresistive detection component is used to detect the magnetic field generated by the current flowing through the second conductive element and output a corresponding second magnetic detection signal.

[0015] The temperature control component is used to detect the temperature around the first receiving hole and the temperature around the second receiving hole, and adjust the temperature of the first conductive element to be consistent based on the temperature around the first receiving hole, and adjust the temperature of the second conductive element to be consistent based on the temperature around the second receiving hole.

[0016] In one embodiment, the shunt body has a central axis extending along the direction of the first conductive element and the second conductive element, and the first receiving hole and the second receiving hole are located on the central axis.

[0017] In one embodiment, the substrate is further provided with an output port, which is electrically connected to the shunt body and the magnetoresistive detection component, respectively.

[0018] In one embodiment, the shunt body has a central axis extending along the directions of a first conductive element and a second conductive element. The first conductive element has multiple notches on both sides parallel to the central axis, and the projection of the first receiving hole at least partially overlaps with the multiple notches. The second conductive element has multiple notches on both sides parallel to the central axis, and the projection of the second receiving hole at least partially overlaps with the multiple notches.

[0019] This utility model also proposes a new energy vehicle, including any of the above-mentioned splitters.

[0020] This utility model also proposes an energy storage device, including the shunt as described in any of the above claims.

[0021] This invention includes a shunt body with a receiving hole; a magnetoresistive detection component, at least partially disposed within the receiving hole; the magnetoresistive detection component detects the magnetic field generated by the current flowing through the conductive component and outputs a corresponding magnetic detection signal; and a temperature control component detects the temperature around the receiving hole and adjusts the temperature of the shunt body to be uniform based on the temperature around the receiving hole. With this configuration, when the shunt is detecting current, the magnetoresistive detection component generates heat under the influence of the current, causing the temperature around the receiving hole to rise. The temperature control component adjusts the temperature around the receiving hole to decrease when it detects that the temperature around the receiving hole is higher than the temperature of the shunt body, thus maintaining a uniform temperature of the shunt body. This avoids thermoelectric potential phenomena caused by uneven temperature distribution in the shunt and improves the accuracy of current detection by the shunt. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0025] Figure 3 This is a side view of an embodiment of the present invention.

[0026] Figure 4 This is a side view of another embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of another embodiment of the present utility model;

[0028] Figure 6 This is a schematic diagram of another embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of another embodiment of the present utility model.

[0030] Explanation of icon numbers:

[0031] 10. Shunt body; 11. First conductive element; 12. Second conductive element; 13. Current sensing element; 20. Receiving hole; 21. First receiving hole; 22. Second receiving hole; 30. Magnetoresistive detection assembly; 31. Magnetoresistive detection module; 32. Magnetic sensing element; 301. First magnetoresistive detection assembly; 302. Second magnetoresistive detection assembly; 40. Temperature control assembly; 41. Temperature sensor; 42. Temperature adjustment assembly; 50. Substrate; 60. Notch; 70. Output port.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] In new energy vehicles, shunts are often connected in series in the circuit under test to detect the current flowing through it and output the detection result. In one exemplary technology, to increase detection accuracy, a current detection method is added to one end of the shunt. This method involves creating a structure at one end of the shunt for mounting the detection component. The current flowing through the shunt causes the temperature of the shunt's detection component to rise. Due to the heat conduction characteristics, the temperature at the end of the shunt corresponding to the created structure also rises, while the temperature at the other end of the shunt, being far from the heat source, remains constant. Thus, the shunt's temperature distribution is uneven during current detection, resulting in a thermoelectric potential phenomenon. This thermoelectric potential phenomenon interferes with the accuracy of current detection, causing deviations in the detection results.

[0037] In one exemplary technique, a hole can be provided at either end of the shunt to install a detection component. This detection component can be a magnetic induction component. A Hall effect sensor within the shunt senses the magnetic field generated by the magnetic induction component and outputs a magnetic field strength signal. The main control module within the shunt calculates the magnitude of the current flowing through the circuit under test based on the magnetic field strength signal. It can be understood that the temperature at the end of the shunt with the hole will experience a temperature rise due to the magnetic induction component under the influence of the current, while the other end of the shunt, being far from the heat source, will not experience localized temperature changes. Thus, the temperature distribution of the shunt is uneven during current detection, resulting in a thermoelectric potential phenomenon. This thermoelectric potential phenomenon interferes with the accuracy of current detection, causing deviations in the detection results.

[0038] Therefore, refer to Figure 1 This utility model proposes a current splitter. In one embodiment, the current splitter proposed by this utility model includes:

[0039] The splitter body 10 is provided with a receiving hole 20.

[0040] A magnetoresistive detection component 30 is at least partially disposed within the receiving hole 20; the magnetoresistive detection component 30 is used to detect the magnetic field generated by the current flowing through the shunt body 10 and output a corresponding magnetic detection signal.

[0041] Temperature control component 40 is used to detect the temperature around the receiving hole 20 and adjust the temperature of the distributor body 10 to be more consistent based on the temperature around the receiving hole 20.

[0042] In this embodiment, the shunt body 10 has connection holes at both ends along its length, allowing the connector of the device under test, such as a battery, to pass through. The current of the device under test flows through the connector and through the shunt body 10 for detection by the magnetoresistive detection component 30. Since the shunt body 10 is made of metal, such as copper, the wall of the receiving hole 20 can provide electromagnetic shielding for the magnetoresistive detection component 30 to avoid external electromagnetic interference.

[0043] In this embodiment, the shape of the receiving hole 20 can be rectangular, circular, polygonal, or other shapes. The magnetic field shape formed in the rectangular receiving hole 20 is more uniform, which helps the magnetoresistive detection component 30 to sense the magnetic field. Unlike the connecting hole mentioned above, the two are staggered. Generally, the connecting hole is closer to the end of the shunt body 10 along the length direction.

[0044] In this embodiment, the magnetoresistive detection component 30 is used to detect the magnetic field generated by the current flowing through the shunt body 10 and output a corresponding magnetic detection signal. The magnetic detection signal is output to an external terminal for combined judgment to improve the accuracy of current detection.

[0045] In this embodiment, the magnetoresistive detection component 30 is implemented using discrete components, such as a Hall element and a magnetic sensor. The magnetic sensing part of the Hall element is disposed within the receiving hole 20. The magnetic sensing part generates a corresponding magnetic field based on the current flowing through the circuit under test, and the magnetic sensor forms a corresponding potential difference based on the strength of the magnetic field generated by the magnetic sensing part. The shunt may also be equipped with a voltage-to-current conversion module, or the potential difference may be output to an external voltage-to-current conversion module via a communication module. The voltage-to-current conversion module converts the potential difference sensed by the magnetic sensor into a corresponding current signal, and the main controller or external terminal determines the current value flowing through the circuit under test based on the current signal. It is understood that the magnetic sensing part of the Hall element and the magnetic sensor can be integrated into the same component, which is beneficial for the miniaturization of the shunt.

[0046] In this embodiment, the magnetoresistive detection component 30 is implemented as an integral element, such as a magnetoresistive detection device made of an amorphous magnetic material. This type of magnetoresistive detection device has high permeability and low hysteresis, does not require a magnetic core, and can directly measure the current flowing in the busbar or circuit board trace under the package, which is beneficial for the miniaturization of the shunt. Examples include anisotropic magnetoresistive, giant magnetoresistive, and rotary-displacement magnetoresistive sensors, all of which are integrated magnetoresistive sensors.

[0047] In this embodiment, the temperature control component 40 can be implemented using multiple temperature sensors, a temperature adjustment component, and a main control module. The multiple temperature sensors respectively collect the temperature around the receiving hole 20 and the temperature of the splitter body 10. The temperature adjustment component is used to adjust the temperature around the receiving hole 20. When the main control module determines that the temperature around the receiving hole 20 is greater than the temperature of the splitter body 10 based on the temperature detection signals output by the multiple temperature sensors, it controls the temperature adjustment component to adjust the temperature around the receiving hole 20 to be the same as the temperature of the splitter body 10, so that the temperature of the splitter body 10 tends to be consistent.

[0048] In this embodiment, when the temperature difference between the area around the receiving hole 20 and the shunt body 10 is less than a preset temperature difference, the temperature of the shunt body 10 tends to be uniform. The preset temperature difference can be a small value, such as 3°C. When the temperature around the receiving hole 20 is the same as or not much different from the temperature of the shunt body 10, the thermoelectric potential phenomenon of the shunt will not occur.

[0049] It is understood that the shunt proposed in this utility model includes a shunt body 10, on which a receiving hole 20 is provided; a magnetoresistive detection component 30 is at least partially disposed within the receiving hole 20; the magnetoresistive detection component 30 is used to detect the magnetic field generated by the current flowing through the conductive component and output a corresponding magnetic detection signal; the temperature control component 40 is used to detect the temperature around the receiving hole 20 and adjust the temperature of the shunt body 10 to be uniform according to the temperature around the receiving hole 20. With this configuration, when the shunt of this utility model is detecting current, the magnetoresistive detection component 30 generates heat under the action of the current, causing the temperature around the receiving hole 20 to rise. The temperature control component 40 is used to adjust the temperature around the receiving hole 20 to decrease when it detects that the temperature around the receiving hole 20 is greater than the temperature of the shunt body 10, so as to maintain a uniform temperature of the shunt body 10, avoid the thermoelectric potential phenomenon caused by uneven temperature distribution of the shunt, and improve the accuracy of the shunt's current detection.

[0050] In one embodiment of this utility model, reference is made to Figure 2The temperature control component 40 includes a temperature adjustment component 42 and a plurality of temperature sensors 41. The temperature adjustment component 42 is connected to the plurality of temperature sensors 41. At least one temperature sensor 41 is disposed on the distributor body 10 and near the receiving hole 20, or at least one temperature sensor 41 is disposed on the hole wall of the receiving hole 20. At least one temperature sensor 41 is disposed on the distributor body 10 away from the receiving hole 20. The temperature adjustment component 42 is used to adjust the temperature of the distributor body 10 to be more uniform according to the detection signals of the plurality of temperature sensors 41.

[0051] When the distributor is operating, a temperature sensor 41 positioned near the receiving orifice 20 is used to acquire the temperature around the receiving orifice 20 in real time, while a temperature sensor 41 positioned away from the receiving orifice 20 is used to acquire the temperature of the distributor body 10 in real time. A temperature control component 42 is used to determine whether the temperature around the receiving orifice 20 is greater than the temperature of the distributor body 10 based on the temperature detection signals output by the multiple temperature sensors 41. When the temperature around the receiving orifice 20 is greater than the temperature of the distributor body 10, or when the temperature around the receiving orifice 20 is greater than the temperature of the distributor body 10 and the difference between the temperature around the receiving orifice 20 and the temperature of the distributor body 10 is greater than a preset threshold, the temperature control component 42 operates to adjust the temperature around the receiving orifice 20 to decrease, thereby ensuring a uniform temperature distribution within the distributor body 10. The temperature control component 42 can be implemented using a thermoelectric cooler or a liquid cooler, or it can be implemented using a liquid cooling system, an air cooling system, or a thermoelectric cooler.

[0052] It is understandable that placing the temperature sensor 41 used to detect the shunt body 10 at a position away from the receiving hole 20 on the shunt body 10 helps to obtain the true temperature of the shunt body 10, and avoids the temperature of the shunt body 10 being affected when the heat generated by the receiving hole 20 is too large and the heat conduction range is too wide.

[0053] In this embodiment, a processor, such as an MCU, DSP (Digital Signal Processor), or FPGA (Field Programmable Gate Array), can be installed on the shunt. The temperature control component 42 and multiple temperature sensors 41 are electrically connected to the processor. The processor is used to control the temperature control module to adjust the temperature around the accommodating hole 20 based on the temperature values ​​around the accommodating hole 20 and the temperature value of the shunt body 10.

[0054] In this embodiment, the shunt can also be equipped with a communication module for communicating with an external terminal. This communication module can be a wireless communication module, such as a WIFI, Bluetooth, or 4G / 5G communication module; or a wired communication module, such as a CAN, SPI, or LIN communication module. The communication module is electrically connected to multiple temperature sensors 41 and a temperature control component 42. The communication module transmits the temperature detection signals output by the multiple temperature sensors 41 to the external terminal, which processes the multiple temperature detection signals and, based on the processing results, transmits corresponding control signals via the communication module to control the temperature control component 42 to adjust the temperature around the receiving hole 20. With this configuration, the shunt of this invention does not require a processor to process multiple temperature detection signals, saving a main controller compared to existing shunts, thus reducing the material cost of the shunt of this invention.

[0055] Based on the above-described embodiment of the magnetoresistive detection component 30 being implemented using an integral element, in one embodiment of this utility model, referring to... Figure 3 The shunt also includes a substrate 50, which is disposed on one side of the shunt body 10; the magnetoresistive detection component 30 is disposed on the substrate 50 at a position corresponding to the receiving hole 20, and at least partially extends into the receiving hole 20.

[0056] In this embodiment, the substrate 110 is a circuit substrate that can be used to house the circuit modules of the shunt. The substrate 110 can be made of fiberglass board, ceramic substrate, copper substrate, etc.

[0057] In this embodiment, the magnetoresistive detection component 30 is located in the gap between the substrate 50 and the shunt body 10. With this arrangement, the substrate 50 and the shunt body 10 can serve as shielding components for the magnetoresistive detection component, preventing electromagnetic interference from the thickness direction of the shunt body from affecting the detection accuracy of the magnetoresistive detection component 30.

[0058] Based on the above embodiment of the magnetoresistive detection component 30 implemented with discrete components, in one embodiment of this utility model, the shunt further includes a substrate 50, which is disposed on one side of the shunt body 10; the magnetoresistive detection component 30 includes a magnetic sensing part 32 and a magnetoresistive detection module 31, the magnetic sensing part 32 is disposed in the receiving hole 20; the magnetoresistive detection module 31 is disposed on the substrate 50 at a position corresponding to the receiving hole 20, and the magnetoresistive detection module 31 is used to detect the magnetic field generated by the current flowing through the magnetic sensing part 32 and output a corresponding magnetic detection signal.

[0059] In this embodiment, the magnetoresistive detection module 31 can be implemented using a resistance detection circuit, and the magnetic sensing unit 32 can be implemented using a magnetoresistive sensor. The magnetoresistive sensor adjusts its resistance value according to the magnetic field strength generated by the current flowing through the circuit under test. The resistance detection circuit can be implemented using a resistance detection chip, a constant current source, a voltage detection circuit, a main controller, etc., to detect the resistance value across the magnetoresistive sensor and output a corresponding voltage value magnetic detection signal. The external terminal can determine the resistance across the magnetoresistive sensor based on the voltage value of the magnetic detection signal, and then determine the current in the circuit under test according to the preset resistance-magnetic field strength-current mapping table for the corresponding magnetoresistive sensor (obtained by the R&D personnel through multiple tests). It is understood that the resistance detection circuit and the magnetoresistive sensor can be integrated into the same component, which is beneficial for the miniaturization of the shunt.

[0060] In this embodiment, reference Figure 4 The receiving hole 20 can be located at the portion where the projections of the shunt body 10 and the substrate 50 overlap. The magnetoresistive detection module 31 is located at the portion of the receiving hole 20 projected onto the substrate 50, so that the magnetoresistive detection module 31 and the magnetic sensing unit 32 are in the same position. This arrangement allows the magnetoresistive detection module 31 and the magnetic sensing unit 32 to be integrated into the same component, forming an integrated magnetoresistive sensor such as anisotropic magnetoresistive, giant magnetoresistive, and rotationally displaced magnetoresistive sensors, which is beneficial for the miniaturization of the shunt.

[0061] In this embodiment, reference Figure 5 The receiving hole 20 can be located on the portion where the projections of the shunt body 10 and the substrate 50 do not overlap. The magnetoresistive detection module 31 is located on the side of the substrate 50 near the receiving hole 20, allowing the magnetoresistive detection module 31 to better sense the magnetic sensing element 32. Compared to the embodiment described above where the magnetoresistive detection module 31 and the magnetic sensing element 32 are integrated into the same component, this solution has lower space requirements. Researchers have more options in selecting the magnetoresistive detection module 31 and the magnetic sensing element 32 based on performance requirements such as measurement accuracy, response speed, and temperature stability, thereby improving the accuracy of the shunt current detection.

[0062] In one embodiment of this utility model, reference is made to Figure 6 The shunt body 10 includes a current sensing element 13, a first conductive element 11, and a second conductive element 12. The first conductive element 11 and the second conductive element 12 are disposed opposite to each other at both ends of the shunt body 10. The first conductive element 11 is provided with a first receiving hole 21, and the second conductive element 12 is provided with a second receiving hole 22. The first receiving hole 21 and the second receiving hole 22 are symmetrically arranged about the shunt body 10.

[0063] The first magnetoresistive detection component 301 is at least partially disposed within the first receiving hole 21; the first magnetoresistive detection component 301 is used to detect the magnetic field generated by the current flowing through the first conductive element 11 and output a corresponding first magnetic detection signal.

[0064] The second magnetoresistive detection component 302 is at least partially disposed within the second receiving hole 22; the second magnetoresistive detection component 302 is used to detect the magnetic field generated by the current flowing through the second conductive element 12 and output a corresponding second magnetic detection signal.

[0065] The temperature control component 40 is used to detect the temperature around the first receiving hole 21 and the temperature around the second receiving hole 22, and adjust the temperature of the first conductive element 11 to be consistent according to the temperature around the first receiving hole 21, and adjust the temperature of the second conductive element 12 to be consistent according to the temperature around the second receiving hole 22.

[0066] In this embodiment, when the current through the shunt body 10 is large, the magnetoresistive detection component 30 generates more heat, and the temperature around the receiving hole 20 also increases. In this case, since the temperature around the receiving hole 20 differs significantly from the temperature of the shunt body 10, the temperature control component 40 takes a long time to adjust the temperature of the shunt body 10 to be consistent. During the adjustment time, the temperature of the shunt body 10 does not become consistent, resulting in an error in the current detected by the shunt during this period. However, with the above-mentioned settings, when the shunt of this invention detects current, since the first receiving hole 21 and the second receiving hole 22 are symmetrically arranged about the current sensing element 13, and the first magnetoresistive detection component 301 and the second magnetoresistive detection component 302 generate the same amount of heat due to the current, the temperature distribution of the first conductive element 11 and the temperature distribution of the second conductive element 12 are basically the same, thereby reducing the temperature difference between the first conductive element 11 and the second conductive element 12. The temperature control component 40 further adjusts the temperatures of the first conductive element 11 and the second conductive element 12 based on the temperature difference between them. Since the temperature difference between the first conductive element 11 and the second conductive element 12 is reduced, the time required for the temperature control component 40 to adjust the temperatures of the first conductive element 11 and the second conductive element 12 to be consistent is shortened. This further controls the temperatures of the first conductive element 11 and the second conductive element 12 to be consistent, ensuring that the temperature of the shunt body 10 is consistent in real time. This further avoids the thermoelectric potential phenomenon caused by uneven temperature distribution in the shunt and improves the accuracy of the shunt current detection.

[0067] In this embodiment, since the current sensing element 13 may overheat when detecting current, the temperature control component 40 can also detect the temperature of the current sensing element 13, and further control the temperature of the first conductive element 11, the second conductive element 12 and the current sensing element 13 to tend to be consistent based on the temperature around the first receiving hole 21, the temperature around the second receiving hole 22 and the temperature of the current sensing element 13.

[0068] In this embodiment, the shunt body 10 has a central axis extending along the direction of the first conductive element 11 and the second conductive element 12, and the first receiving hole 21 and the second receiving hole 22 are located on the central axis. Since the central axis is the center line of the current sensing element 13, compared to positions located off the central axis, the heat generated by the first magnetoresistive detection component 301 and the second magnetoresistive detection component 302 located on the central axis is uniformly conducted along the central axis direction, so that the heat can be more easily distributed evenly on the first conductive element 11 and the second conductive element 12, avoiding local overheating. It is understood that the central axis, the line used to describe the symmetry of the current sensing element 13, is infinitely long, and it is also the central axis of the first conductive element 301 and the second conductive element 302.

[0069] In this embodiment, the current sensing element 13 can be implemented using at least one current sensing resistor, such as an alloy resistor. The alloy resistor can be made of manganese-copper alloy. The current sensing resistor can be directly welded into the first conductive element 301 and the second conductive element 302. The first conductive element 301 and the second conductive element 302 are copper busbars disposed on opposite sides of the current sensing element 13 for conducting electricity and / or fixing to corresponding connection terminals in the circuit under test.

[0070] In one embodiment of this utility model, reference is made to Figure 7 The substrate 50 is also provided with an output port 70, which is electrically connected to the shunt body 10 and the magnetoresistive detection component 30 respectively.

[0071] In this embodiment, the output port 70 can be implemented using an interface that outputs data to the data connection line when transmitting data, such as an RS-232 interface, RS-485 interface, COM interface, or USB interface, etc.

[0072] In this embodiment, output port 70 transmits the first magnetic detection signal and the second magnetic detection signal to an external terminal, which processes the signals to determine the current value in the circuit under test. With this configuration, the shunt of this invention does not require a main controller to process the first and second magnetic detection signals, thus eliminating the need for a main controller compared to existing shunts and reducing the material cost of the shunt of this invention.

[0073] refer to Figure 6 In one embodiment of the present invention, the shunt body 10 has a central axis extending along the direction of the first conductive member 11 and the second conductive member 12. The first conductive member 11 has a plurality of notches 60 on both sides parallel to the central axis, and the projection of the first receiving hole 21 at least partially overlaps with the plurality of notches 60. The second conductive member 12 has a plurality of notches 60 on both sides parallel to the central axis, and the projection of the second receiving hole 22 at least partially overlaps with the plurality of notches 60.

[0074] In this embodiment, by creating notches 60 at the positions of the first conductive member 11 and the second conductive member 12 corresponding to the positions of the first receiving hole 21 and the second receiving hole 22, the magnetic induced current at these positions is more concentrated, thereby improving the detection accuracy of the first magnetoresistive detection component 301 and the second magnetoresistive detection component 302. Furthermore, by setting the notches 60 to cover the projection of the receiving hole 20 on the side of the conductive member where the notches 60 are located, the ability of the notches 60 to concentrate the magnetic induced current is enhanced, further improving the detection accuracy of the magnetoresistive detection component 30.

[0075] This utility model also proposes a new energy vehicle, including a splitter as described in any of the above claims.

[0076] It is worth noting that since the new energy vehicle of this utility model is based on the above-mentioned splitter, the embodiments of the new energy vehicle of this utility model include all the technical solutions of all the embodiments of the above-mentioned splitter, and the technical effects achieved are exactly the same, so they will not be repeated here.

[0077] This utility model also proposes an energy storage device, including a shunt as described in any of the above.

[0078] In this embodiment, the energy storage device can be a battery module, an outdoor power module, etc.

[0079] It is worth noting that since the energy storage device of this utility model is based on the above-mentioned shunt, the embodiments of the energy storage device of this utility model include all the technical solutions of all the embodiments of the above-mentioned shunt, and the technical effects achieved are exactly the same, so they will not be repeated here.

[0080] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A shunt, characterized in that, include: The splitter body is provided with a receiving hole; A magnetoresistive detection component is at least partially disposed within the receiving hole; the magnetoresistive detection component is used to detect the magnetic field generated by the current flowing through the shunt body and output a corresponding magnetic detection signal. A temperature control component is used to detect the temperature around the receiving hole and adjust the temperature of the distributor body to be more uniform based on the temperature around the receiving hole.

2. The shunt as described in claim 1, characterized in that, The temperature control component includes a temperature adjustment component and multiple temperature sensors. The temperature adjustment component is connected to the multiple temperature sensors. At least one temperature sensor is disposed on the distributor body and near the receiving hole, or at least one temperature sensor is disposed on the hole wall of the receiving hole; at least one temperature sensor is disposed on the distributor body at a position away from the receiving hole. The temperature control component is used to adjust the temperature of the shunt body to be more uniform based on the detection signals from the multiple temperature sensors.

3. The shunt as described in claim 1, characterized in that, The shunt also includes a substrate disposed on one side of the shunt body; the magnetoresistive detection component is disposed on the substrate at a position corresponding to the receiving hole, and at least partially extends into the receiving hole.

4. The shunt as described in claim 1, characterized in that, The shunt also includes a substrate, which is disposed on one side of the shunt body; the magnetoresistive detection assembly includes a magnetic sensing part and a magnetoresistive detection module, the magnetic sensing part being disposed within the receiving hole; the magnetoresistive detection module is disposed on the substrate at a position corresponding to the receiving hole, and the magnetoresistive detection module is used to detect the magnetic field generated by the current flowing through the magnetic sensing part and output a corresponding magnetic detection signal.

5. The shunt as described in any one of claims 1-4, characterized in that, The shunt body includes a current sensing element, a first conductive element, and a second conductive element. The first conductive element and the second conductive element are disposed opposite to each other at both ends of the shunt body. The first conductive element is provided with a first receiving hole, and the second conductive element is provided with a second receiving hole. The first receiving hole and the second receiving hole are symmetrically arranged about the shunt body. A first magnetoresistive detection component is at least partially disposed within the first receiving hole; the first magnetoresistive detection component is used to detect the magnetic field generated by the current flowing through the first conductive element and output a corresponding first magnetic detection signal. The second magnetoresistive detection component is at least partially disposed within the second accommodating hole; the second magnetoresistive detection component is used to detect the magnetic field generated by the current flowing through the second conductive element and output a corresponding second magnetic detection signal. The temperature control component is used to detect the temperature around the first receiving hole and the temperature around the second receiving hole, and adjust the temperature of the first conductive element to be consistent based on the temperature around the first receiving hole, and adjust the temperature of the second conductive element to be consistent based on the temperature around the second receiving hole.

6. The shunt as described in claim 5, characterized in that, The shunt body has a central axis extending along the direction of the first conductive element and the second conductive element, and the first receiving hole and the second receiving hole are located on the central axis.

7. The shunt as claimed in any one of claims 3 or 4, characterized in that, The substrate is also provided with an output port, which is electrically connected to the shunt body and the magnetoresistive detection component respectively.

8. The shunt as described in claim 5, characterized in that, The shunt body has a central axis extending along the direction of the first conductive element and the second conductive element. The first conductive element has multiple notches on both sides parallel to the central axis, and the projection of the first receiving hole at least partially overlaps with the multiple notches. The second conductive element has multiple notches on both sides parallel to the central axis, and the projection of the second receiving hole at least partially overlaps with the multiple notches.

9. A new energy vehicle, characterized in that, Includes the shunt as described in any one of claims 1-8.

10. An energy storage device, characterized in that, Includes the shunt as described in any one of claims 1-8.

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