Tracking type digital pointer thermometer for new energy battery pack

Abstract

The utility model relates to a tracking type digital pointer thermometer for a new energy battery pack, which adopts an enhanced CAN FD network interface, micro stepping driving of a stepping motor and an electromagnetic energy-saving technology, and adopts an integrated topological space layout. A new energy battery pack, a CAN FD interface connector, a two-way digital pointer, a two-way digital dial plate and a micro-step drive are combined into one, so that the robustness and robustness of the CAN FD bus for monitoring the real-time dynamic information of the energy battery pack are greatly improved; besides, the amorphous alloy material is used in the iron core body of the stepping motor for the first time, the iron loss of the stepping motor is obviously reduced, and the service life of the stepping motor is at least five to eight times that of LED and LCD display instruments, so that the amorphous alloy material can be widely applied to digital pointer type devices of new energy battery packs, and the market prospect is very wide.

Description

Technical Field

[0001] The present invention relates to a tracking digital pointer thermometer for a new energy battery pack. The thermometer adopts a CAN FD local area network bus, micro-stepping motor micro-step driving technology, energy-saving electromagnetic technology, and digital temperature sensing technology, and can be used in a temperature sensing tracking and indicating device for a new energy battery pack. Background Art

[0002] New energy battery packs are very sensitive to temperature, because changes in the working environment temperature directly affect the charging and discharging efficiency of new energy battery packs; at low temperatures, lithium-ion battery packs have the problem of failure, and at high temperatures, lithium-ion battery packs have the possibility of heating or thermal explosion.

[0003] To this end, the inventor of the application adopted a new idea, that is, in the form of an enhanced CAN FD local area network, an external digital temperature sensor and a digital pointer thermometer are used to track the operating temperature changes of the battery pack. In a space the size of a watch dial, this thermometer has two digital pointers, one digital pointer is used to set the critical value of the battery pack temperature control action, and the other digital pointer is used to detect the actual value of the current temperature. Therefore, through temperature tracking, detection and control, the temperature of the new energy battery pack can be controlled within a reasonable range.

[0004] Obviously, in the present invention, the micro-stepping motor is a key component, because it can convert the electrical pulse signal into angular displacement rotation, and drive the pointer through the rotating shaft of the micro-stepping motor. Since the number of steps of the micro-stepping motor is only related to the number of input pulses and is proportional, it can be started and stopped quickly and is easy to use with a binary microcontroller. Therefore, there is no need to add a feedback link in the drive circuit for precise positioning, and the accurate measured temperature value can be indicated.

[0005] In the present invention application, two things are respectively connected with the CAN FD local area network, one is the temperature sensor based on the CAN FD local area network, and the other is the digitized digital pointer thermometer, so that the digital instrument based on the CAN FD bus is powerful. In the tracking digital pointer thermometer, the digital pointer of the critical value of the preset battery pack temperature control action is set on the host computer through the CAN FD bus, while the actual temperature value of the new energy battery pack is detected on site, and the control action of tracking the temperature change is also issued by the CAN FD bus. In this way, by inputting the temperature change, the new energy battery pack is completely under the control of the CAN FD bus. Summary of the invention

[0006] Based on this, the inventor of the application proposed a tracking digital pointer thermometer solution for new energy battery packs, which is a combination of new energy battery packs, microelectronics technology, electromagnetic technology and enhanced CAN FD network technology. It directly integrates the new energy battery pack into the CAN FD local area network through temperature measurement and tracking control.

[0007] The specific contents are as follows:

[0008] A tracking digital pointer thermometer for new energy battery packs, which consists of a digital dial, a digital dial intermediate, a CAN FD plug, a PCB circuit board and a dual-axis stepper motor movement. The main points are:

[0009] The digital dial is engraved with a temperature scale, because the preset temperature value on the digital dial is the same as the measured temperature scale, therefore, only one circle of temperature scale is engraved on the digital dial, and after the temperature scale is multiplied by ten, the indication range is 10°C to 120°C and 0 to -50°C;

[0010] The digital dial is connected to the middle plug connector hole through the middle external spiral on the digital dial, and the middle connector is connected to the front and rear of the plug respectively, wherein the front of the plug is connected to the CAN FD socket, and the four-core twisted wire passes through the wire hole at the rear of the plug and is connected to the connection plug at the front of the plug;

[0011] The PCB circuit board is circular and 1.6 mm thick, with a dual-shaft stepper motor movement component installed on one side, and a circuit control chip is surface-mounted and welded on the other side, including a single-chip microcomputer, a CAN FD interface chip, a driver chip, a high-speed optical isolation A, a high-speed optical isolation B, a high-speed optical isolation C, and a high-speed optical isolation D, and a dual-channel micro-stepping driver chip is surface-mounted and welded on the same side as the dual-shaft stepper motor movement;

[0012] The dual-shaft stepper motor movement is an electromagnetic drive part, which is composed of M-way and N-way electromagnetic drive components, which are first surface mounted on one side of the PCB circuit board, and then the PCB circuit board is installed in the space of the digital dial intermediate body, wherein:

[0013] The M-circuit includes an M-circuit embedded active magnet, an M-circuit iron core, an M-circuit two-phase coil group, an M-circuit first-stage driven wheel, an M-circuit second-stage driven wheel, and an M-circuit pointer driving shaft. The short pointer is connected to the M-circuit pointer driving shaft, that is, the short pointer indicates the actual temperature value on the digital dial;

[0014] The N-way includes N-way embedded active magnets, N-way iron core bodies, N-way two-phase coil groups, N-way first-stage driven wheels, N-way second-stage driven wheels, and N-way pointer drive shafts. The long pointer is connected to the N-way pointer drive shaft, that is, the long pointer indicates the temperature preset value on the digital dial;

[0015] The relationship between the dual-axis stepper motor movement and the control circuit is as follows:

[0016] Both the M-way two-phase coil group and the N-way two-phase coil group are driven by a dual-way micro-stepping drive chip, and the dual-way micro-stepping drive chip is controlled by the drive chip, and the I / O port of the single-chip microcomputer controls the drive chip to ensure that each pulse can output a 1 / 12 degree drive pulse to the M-way two-phase coil group or the N-way two-phase coil group;

[0017] When the M-way pointer driving shaft drives the short pointer to rotate, the single-chip microcomputer is responsible for the I / O port of the M-way control and sends instructions to the driver chip, and the driver chip then sends commands to the dual-way micro-step driver chip. As a result, the dual-way micro-step driver chip selectively outputs micro-step driving pulses only to the M-way two-phase coil group. The M-way embedded active magnet drives the first-stage driven wheel of the M-way to rotate under the push of the M-way two-phase coil group. The first-stage driven wheel of the M-way then drives the second driven wheel of the M-way to rotate. The M-way driven wheel then drives the M-way pointer driving shaft, and the M-way pointer driving shaft drives the short pointer.

[0018] Similarly, when the N-way pointer driving shaft drives the long pointer to rotate, the single-chip microcomputer is responsible for the N-way control I / O port and sends instructions to the driver chip, and the driver chip then sends corresponding commands to the dual-way micro-step driver chip. As a result, the dual-way micro-step driver chip selectively outputs micro-step drive pulses only to the N-way two-phase coil group. The N-way embedded active magnet drives the N-way first-stage driven wheel to rotate under the push of the N-way two-phase coil group, and the N-way first-stage driven wheel then drives the N-way second-stage driven wheel to rotate, and the N-way second-stage driven wheel then drives the N-way pointer driving shaft to rotate, and the N-way pointer driving shaft drives the long pointer.

[0019] Furthermore, the gears, pointers and coil skeleton parts of the dual-shaft stepper motor movement are all injection molded using a wear-resistant and lubricating polymer synthetic polyamide engineering plastic. The material has high strength, high toughness and self-lubrication, and its wear resistance is far superior to other plastics.

[0020] Furthermore, the M-way iron core body and the N-way iron core body are both formed by laminating amorphous alloy bodies, thereby significantly reducing the iron loss of the stepper motor and greatly reducing the internal heat generated when the micro stepper motor is working.

[0021] Furthermore, the M-way embedded active magnet and the N-way embedded active magnet are both sintered from NdFeB micromagnets into tiny gear shapes, and the M-way embedded active magnet is embedded in the iron core body, and the N-way embedded active magnet is embedded in the iron core body, so that the magnetic circuit efficiency is doubled.

[0022] Furthermore, the digital dial intermediate body is connected in a spiral manner to the middle plug connector hole on the middle connector of the CAN FD plug through the intermediate outer spiral.

[0023] Furthermore, the CAN FD plug is a four-core twisted wire, including CAN FD+, CAN FD-, a +5V power line, and a common ground line GND.

[0024] Furthermore, the short pointer of the tracking digital pointer thermometer points to the actual temperature, while the long pointer points to the preset temperature value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to clearly illustrate the technical solution of the embodiment of the present invention, the following briefly introduces the drawings required for use in the embodiment. Obviously, for those skilled in the art, this embodiment can be inferred from one example without creative work, and other similar drawings can be obtained based on these drawings.

[0026] Figure 1 A tracking digital pointer thermometer for new energy battery packs Figure 1 ;

[0027] Figure 2 A tracking digital pointer thermometer for new energy battery packs Figure 2 ;

[0028] Figure 3 A tracking digital pointer thermometer for new energy battery packs Figure 3 ;

[0029] Figure 4 A tracking digital pointer thermometer for new energy battery packs Figure 4 ;

[0030] Figure 5 A tracking digital pointer thermometer for new energy battery packs Figure 1 ;

[0031] Figure 6 Analysis of a tracking digital pointer thermometer for new energy battery packs Figure 2 ;

[0032] Figure 7 A tracking digital pointer thermometer for new energy battery packs Figure 3 ;

[0033] Figure 8 PCB circuit board and dual-channel stepper motor drive movement Figure 1 ;

[0034] Fig. 9 PCB circuit board and dual-channel stepper motor drive movement Figure 2 ;

[0035] Fig.10 PCB circuit board and dual-channel stepper motor drive movement Figure 3 ;

[0036] Fig.11 PCB circuit board and interface drive circuit Figure 1 ;

[0037] Fig.12 PCB circuit board and interface drive circuit Figure 2 .

[0038] 1 Digital dial

[0039] 1-2 Temperature scale

[0040] 1-3 Short pointer

[0041] 1-4 Long pointer

[0042] 2 Digital dial intermediate

[0043] 2-1 Intermediate outer helix

[0044] 3 CAN FD plug

[0045] 3-1 Front of the plug

[0046] 3-2 Middle connector

[0047] 3-3 Rear of plug

[0048] 4 PCB circuit board

[0049] 4-1 Microcontroller

[0050] 4-2 CAN FD interface chip

[0051] 4-3 Driver chip

[0052] 4-4 High-speed optical isolation A

[0053] 4-5 High-speed optical isolation B

[0054] 4-6 High-speed optical isolation C

[0055] 4-7 High-speed optical isolation D

[0056] 4-8 Dual-channel micro-stepping driver chip

[0057] 5 Dual-axis stepper motor movement

[0058] 5-1 M-way embedded active magnet

[0059] 5-2 M-way iron core

[0060] 5-3 M-way two-phase line package

[0061] 5-4 First stage driven wheel

[0062] 5-5 M road driven wheel

[0063] 5-6 N-way embedded active magnet

[0064] 5-7 N-way iron core

[0065] 5-8 N-way two-phase line package

[0066] 5-9 N-way driven wheel

[0067] 5-10 M-way pointer drive shaft

[0068] 5-11 N-way pointer drive shaft DETAILED DESCRIPTION

[0069] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0070] A tracking digital pointer thermometer for a new energy battery pack, comprising a digital dial (1), a digital dial intermediate (2), a CAN FD plug (3), a PCB circuit board (4) and a dual-axis stepper motor movement (5), the main features of which are:

[0071] The digital dial (1) is engraved with a temperature scale (1-2). Since the preset temperature value on the digital dial (1) is the same as the actual temperature scale, only one circle of temperature scale (1-2) is engraved on the digital dial (1). The temperature scale indicates a range of 10°C to 120°C and 0 to -50°C after multiplying by ten.

[0072] The digital dial (1) is connected to the middle plug connector hole (3-4) via the middle external spiral (2-1) on the digital dial, and the middle connector (3-2) is connected to the front part (3-1) and the rear part (3-3) of the plug respectively, wherein the front part (3-1) of the plug is connected to the CAN FD socket, and the four-core twisted wire passes through the wire hole of the rear part (3-3) of the plug and is connected to the connection plug of the front part (3-1) of the plug;

[0073] The double-sided PCB circuit board (4) is circular and 1.6 mm thick, with a dual-shaft stepper motor movement (5) component mounted on one side, and a circuit control chip surface-mounted and welded on the other side, including a single-chip microcomputer (4-1), a CAN FD interface chip (4-2), a driver chip (4-3), a high-speed optical isolation A (4-4), a high-speed optical isolation B (4-5), a high-speed optical isolation C (4-6), and a high-speed optical isolation D (4-7), while a dual-channel micro-stepping driver chip (4-8) is surface-mounted and welded on the same side as the dual-shaft stepper motor movement (5);

[0074] The dual-shaft stepper motor movement (5) is an electromagnetic drive part, which is composed of M-way and N-way electromagnetic drive components, which are first surface mounted on one side of a PCB circuit board (4), and then surface mounted on one side of the PCB circuit board (4), and then the PCB circuit board (4) is installed in the space of the digital dial intermediate body (2), wherein:

[0075] The M-circuit comprises an M-circuit embedded active magnet (5-1), an M-circuit iron core (5-2), an M-circuit two-phase coil group (5-3), an M-circuit first-stage driven wheel (5-4), an M-circuit second-stage driven wheel (5-5), and an M-circuit pointer drive shaft (5-10); a short pointer (1-3) is connected to the M-circuit pointer drive shaft (5-10), that is, the short pointer (1-3) indicates the actual temperature value (1-2) on the digital dial (1);

[0076] The N-way includes N-way embedded active magnets (5-6), N-way iron core bodies (5-7), N-way two-phase coil groups (5-8), N-way first-stage driven wheels (5-12), N-way second-stage driven wheels (5-9), and N-way pointer drive shafts (5-11); the long pointer (1-4) is connected to the N-way pointer drive shaft (5-11), that is, the long pointer (1-4) indicates a temperature preset scale on the digital dial (1);

[0077] The relationship between the dual-shaft stepper motor movement (5) and the control circuit is as follows:

[0078] The M-way two-phase coil group (5-3) and the N-way two-phase coil group (5-8) are both driven by a dual-way micro-step drive chip (4-8), and the dual-way micro-step drive chip (4-8) is controlled by the drive chip (4-3), and the I / O port of the single-chip computer (4-1) controls the drive chip (4-3) to ensure that each pulse can output a 1 / 12 degree drive pulse to the M-way two-phase coil group (5-3) or the N-way two-phase coil group (5-8);

[0079] When the M-way pointer driving shaft (5-10) drives the short pointer (1-3) to rotate, the single-chip computer (4-1) is responsible for the I / O port of the M-way control and sends a command to the driver chip (4-3), and the driver chip (4-3) then sends a command to the dual-way micro-step driver chip (4-8), so that the dual-way micro-step driver chip (4-8) selectively outputs a micro-step driving pulse only to the M-way two-phase coil group (5-3), and the M-way embedded active magnet (5-1) drives the M-way first-stage driven wheel (5-4) to rotate under the push of the M-way two-phase coil group (5-3), and the M-way first-stage driven wheel (5-4) then drives the M-way second driven wheel (5-5) to rotate, and the M-way second driven wheel (5-5) then drives the M-way pointer driving shaft (5-10), and the M-way pointer driving shaft (5-10) then drives the short pointer (1-3);

[0080] Similarly, when the N-way pointer drive shaft (5-11) drives the long pointer (1-4) to rotate, the single-chip computer (4-1) is responsible for the I / O port of the N-way control and sends instructions to the driver chip (4-3), and the driver chip (4-3) then sends corresponding commands to the dual-way micro-step driver chip (4-8). As a result, the dual-way micro-step driver chip (4-8) selectively outputs micro-step drive pulses only to the N-way two-phase coil group (5-8), and the N-way embedded active magnet (5-6) drives the N-way first-stage driven wheel (5-12) to rotate under the impetus of the N-way two-phase coil group (5-8), and the N-way first-stage driven wheel (5-12) then drives the N-way second driven wheel (5-9) to rotate, and the N-way second driven wheel (5-9) then drives the N-way pointer drive shaft (5-11) to rotate, and the N-way pointer drive shaft (5-11) then drives the long pointer (1-4).

[0081] Furthermore, the gears, pointers and coil skeleton parts of the dual-shaft stepper motor movement (5) are all injection-molded using a wear-resistant and lubricating synthetic polyamide engineering plastic. This material has high strength, high toughness and self-lubricating properties, and its wear resistance is far superior to other plastics.

[0082] Furthermore, the M-way iron core body (5-2) and the N-way iron core body (5-7) are both made of laminated amorphous alloy bodies, thereby significantly reducing the iron loss of the stepper motor and greatly reducing the heat generated when the stepper motor is working.

[0083] Furthermore, the M-circuit embedded active magnet (5-1) and the N-circuit embedded active magnet (5-6) are both sintered from neodymium iron boron micromagnets into a tiny gear shape, and the M-circuit embedded active magnet (5-1) is embedded in the iron core body (5-2), and the N-circuit embedded active magnet (5-6) is embedded in the iron core body (5-7), so that the magnetic circuit efficiency is doubled.

[0084] Furthermore, the digital dial intermediate body (2) is connected in a spiral manner to a middle plug connector hole (3-4) on a middle connector (3-2) of a CAN FD plug (3) via an intermediate outer spiral (2-1).

[0085] Furthermore, the CAN FD plug (3) is a four-core twisted wire, including CAN FD+, CAN FD-, a +5V power line, and a common ground line GND.

[0086] Furthermore, the short pointer (1-3) points to the actual temperature, and the long pointer (1-4) points to the preset temperature value. Since the actual temperature value is consistent with the preset value, there is only one circle of temperature scale (1-2) on the digital dial (1), and the temperature scale (1-2) ranges from 10°C to 120°C and 0 to -50°C. Beneficial Effects

[0087] A tracking digital pointer thermometer for a new energy battery pack proposed in a preferred embodiment of the present invention has the following significant beneficial effects:

[0088] First, the present invention proposes a tracking digital pointer thermometer for new energy battery packs. With an integrated topological space, it is the first to integrate new energy battery packs, CAN FD interface connectors, dual-channel digital pointers, dual-channel digital dials, digital temperature sensors, and multi-pronged micro-step drive technology into one, achieving the most economical and overall optimal system structure, becoming a new energy battery pack LAN bus product that has never been seen on the market. In terms of practicality, its design drawings are also engineered.

[0089] Secondly, the present invention incorporates the new energy battery pack into the network bus through the enhanced CAN FD local area network interface through the digital pointer dial. Since the CAN FD local area network is open and extensible, the 64-byte data packet structure, variable baud rate transmission efficiency and non-destructive arbitration mechanism greatly improve the CAN FD bus's underlying temperature monitoring and online real-time monitoring of the critical point of the new energy battery pack to a new level; through the change of the new energy battery pack temperature, the new energy battery pack is completely placed under the control of the CAN FD bus, that is, multiple wiring harnesses can be replaced by a four-core twisted cable. Within the maximum electrical strength requirement of the CAN FD local area network, the CAN FD bus is effective in controlling multiple new energy battery packs in the system, and promotes the networking of tracking digital instrument pointer instruments.

[0090] Third, because amorphous alloy materials are used for the first time in the iron core of micro-stepping motors to replace silicon steel sheets, the iron loss of stepping motors is significantly reduced, energy-saving control of electromagnetic products is achieved, and the heat generation of dual-digital pointer dials and the aging rate of components are also reduced; at the same time, the micro-stepping motor hardware uses polymer synthetic polyamide engineering plastics as gear, pointer and coil skeleton materials, which greatly enhances the service life of the tracking digital pointer thermometer. Compared with LED and LCD instruments, the tracking digital pointer thermometer has a longer service life and aging cycle, because the pointer does not consume electricity when it is not moving or refreshing, so it is more energy-saving and consumption-reducing, making its life at least five to eight times that of LED and LCD digital instruments.

[0091] Fourth, in order to realize the layout of the dual-digit pointer, the present invention optimizes the topological space structure inside the micro stepping motor, so that each path of the dual-shaft stepping motor movement has only one active magnet, an iron core, a two-phase coil, and a driven wheel, and the two dual shafts share the first-stage driven wheel, thereby making the miniaturization of the trackable dual-digital dial possible.

[0092] Fifth, the present invention also effectively overcomes the inherent disadvantages of digital pointers, that is, they have inherent step distances. If the digital pointer does not implement micro-step operation, but is directly pushed by the stepping motor drive shaft, it will inevitably cause the pointer to shake, resulting in a bad visual experience. However, through a two-pronged operation, that is, a 1 / 12 pulse signal is output through a dual-channel micro-step drive chip, and then further refined into a micro-step through a reduction gear, the digital pointer can achieve the same smooth and silky rotation as an analog hairspring pointer.

[0093] In this specification, the principle and implementation of the present invention are described through a specific example of a tracking digital pointer thermometer for a new energy battery pack, which is only used to help understand the core idea of ​​the present invention and should not be understood as a limitation of the present invention. Those skilled in the art understand that various changes made to the present invention in form and detail without departing from the spirit and scope of the present invention defined in the attached claims specification are within the scope of protection of the present invention.

Claims

1. A tracking digital pointer thermometer for a new energy battery pack, comprising a digital dial (1), a digital dial intermediate (2), a CAN FD plug (3), a PCB circuit board (4) and a dual-axis stepper motor movement (5), characterized in that: The digital dial (1) is engraved with a temperature scale (1-2). Since the preset temperature value on the digital dial (1) is the same as the measured temperature scale, only one circle of temperature scale (1-2) is engraved on the digital dial (1). The temperature scale indicates a range of 10°C to 120°C and 0 to -50°C. The digital dial (1) is connected to the middle plug connector hole (3-4) via the middle external spiral (2-1) on the digital dial, and the middle connector (3-2) is connected to the front part (3-1) and the rear part (3-3) of the plug respectively, wherein the front part (3-1) of the plug is connected to the CAN FD socket, and the four-core twisted wire passes through the wire holes of the rear part (3-3) of the plug and the middle connector (3-2) and is connected to the connection plug of the front part (3-1) of the plug; The PCB circuit board (4) is circular and 1.6 mm thick, with a dual-shaft stepper motor movement (5) component mounted on one side, and a circuit control chip surface-mounted and welded on the other side, including a single-chip microcomputer (4-1), a CAN FD interface chip (4-2), a driver chip (4-3), a high-speed optical isolation A (4-4), a high-speed optical isolation B (4-5), a high-speed optical isolation C (4-6), and a high-speed optical isolation D (4-7), while a dual-channel micro-stepping driver chip (4-8) is surface-mounted and welded on the same side as the dual-shaft stepper motor movement (5); The dual-shaft stepper motor movement (5) is an electromagnetic drive part, which is composed of M-way and N-way electromagnetic drive components, which are first surface mounted on one side of a PCB circuit board (4), and then surface mounted on one side of the PCB circuit board (4), and then the PCB circuit board (4) is installed in the space of the digital dial intermediate body (2), wherein: The M-circuit comprises an M-circuit embedded active magnet (5-1), an M-circuit iron core (5-2), an M-circuit two-phase coil group (5-3), an M-circuit first-stage driven wheel (5-4), an M-circuit second-stage driven wheel (5-5), and an M-circuit pointer drive shaft (5-10); a short pointer (1-3) is connected to the M-circuit pointer drive shaft (5-10), that is, the short pointer (1-3) indicates a temperature scale (1-2) on the digital dial (1); The N-way includes N-way embedded active magnets (5-6), N-way iron core bodies (5-7), N-way two-phase coil groups (5-8), N-way first-stage driven wheels (5-12), N-way second-stage driven wheels (5-9), and N-way pointer drive shafts (5-11); the long pointer (1-4) is connected to the N-way pointer drive shaft (5-11), that is, the long pointer (1-4) indicates a preset temperature value on the digital dial (1); The relationship between the dual-shaft stepper motor movement (5) and the control circuit is as follows: The M-way two-phase coil group (5-3) and the N-way two-phase coil group (5-8) are both driven by a dual-way micro-step drive chip (4-8), and the dual-way micro-step drive chip (4-8) is controlled by the drive chip (4-3), and the I / O port of the single-chip computer (4-1) controls the drive chip (4-3) to ensure that each pulse can output 1 / 12 degree of drive power to the M-way two-phase coil group (5-3) or the N-way two-phase coil group (5-8); When the M-way pointer driving shaft (5-10) drives the short pointer (1-3) to rotate, the single-chip computer (4-1) is responsible for the I / O port of the M-way control and sends a command to the dual-way micro-step driving chip (4-8), so that the dual-way micro-step driving chip (4-8) selectively outputs a micro-step driving pulse only to the M-way two-phase coil group (5-3), and the M-way embedded active magnet (5-1) drives the M-way first-stage driven wheel (5-4) to rotate under the impetus of the M-way two-phase coil group (5-3), and the M-way first-stage driven wheel (5-4) then drives the M-way second-stage driven wheel (5-5) to rotate, and the M-way second-stage driven wheel (5-5) then drives the M-way pointer driving shaft (5-10), and the M-way pointer driving shaft (5-10) then drives the short pointer (1-3); Similarly, when the N-way pointer driving shaft (5-11) drives the long pointer (1-4) to rotate, the single-chip computer (4-1) is responsible for the I / O port of the N-way control and sends instructions to the dual-way micro-step driving chip (4-8), so that the dual-way micro-step driving chip (4-8) selectively outputs micro-step driving pulses only to the N-way two-phase coil group (5-8), and the N-way embedded active magnet (5-6) drives the N-way first-stage driven wheel (5-12) to rotate under the impetus of the N-way two-phase coil group (5-8), and the N-way first-stage driven wheel (5-12) then drives the N-way second-stage driven wheel (5-9) to rotate, and the N-way second-stage driven wheel (5-9) then drives the N-way pointer driving shaft (5-11) to rotate, and the N-way pointer driving shaft (5-11) then drives the long pointer (1-4).

2. A tracking digital pointer thermometer for a new energy battery pack according to claim 1, characterized in that: The gears and coil frame parts of the dual-shaft stepper motor movement (5) are both injection-molded from high-molecular synthetic polyamide engineering plastics.

3. According to claim 1, a tracking digital pointer thermometer for a new energy battery pack is characterized in that: The M-way iron core body (5-2) and the N-way iron core body (5-7) are both made of stacked amorphous alloy bodies.

4. According to claim 1, a tracking digital pointer thermometer for a new energy battery pack is characterized in that: The M-way embedded active magnet (5-1) and the N-way embedded active magnet (5-6) are both sintered from neodymium iron boron micromagnets into a tiny gear shape, and the M-way embedded active magnet (5-1) is embedded in the iron core body (5-2), and the N-way embedded active magnet (5-6) is embedded in the iron core body (5-7).

5. The tracking digital pointer thermometer for new energy battery pack according to claim 1, characterized in that: The digital dial intermediate body (2) is connected in a spiral manner to a middle plug connector hole (3-4) on a middle connector (3-2) of a CAN FD plug (3) via an intermediate outer spiral (2-1).

6. A tracking digital pointer thermometer for new energy battery pack according to claim 1, characterized in that: The CAN FD plug (3) is a four-core twisted wire, including CAN FD+, CAN FD-, a +5V power line, and a common ground line GND.

7. A tracking digital pointer thermometer for new energy battery pack according to claim 1, characterized in that: The short pointer (1-3) points to the actual temperature, and the long pointer (1-4) points to the preset temperature value.

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