A battery pack temperature detection device

Abstract

The utility model discloses a kind of battery pack temperature detection equipment, it is related to battery pack temperature detection technical field, its technical scheme is: including battery box ontology, battery box ontology inside fixedly equipped with battery installation groove, battery installation groove inside fixedly equipped with battery pack ontology, battery pack ontology both sides are equipped with battery number, battery box ontology top fixedly equipped with battery box cover ontology, temperature detection component is equipped in battery box ontology inside, a kind of battery pack temperature detection equipment is beneficial effect is: through the movement unit of two detectors, infrared temperature sensor is respectively arranged on the both sides of battery pack ontology, the temperature of different positions of battery both sides can be simultaneously real-time collected, compared with traditional single side single point detection, avoid the misjudgment problem caused by the uneven distribution of battery internal temperature, sliding seat is driven by reciprocating screw rod, do linear reciprocating motion along the length direction of battery, ensure that infrared temperature sensor covers the full area of battery both sides.

Description

Technical Field

[0001] This utility model relates to the field of battery pack temperature detection technology, and specifically to a battery pack temperature detection device. Background Technology

[0002] In the current era of rapid development in the new energy industry, battery packs, as the core power units of electric vehicles, energy storage systems, and other equipment, are directly related to the stability of system operation and the safety of users' lives and property. Battery pack temperature detection, as a core function of the battery management system (BMS), not only bears the critical responsibility of preventing battery overheating and thermal runaway (such as fire or explosion), but also needs to monitor abnormal temperature rises in real time (such as internal short circuits or heat dissipation failure), avoid batteries from operating at extreme temperatures (high temperatures accelerate aging, and low temperatures reduce activity), and balance the temperature differences between cells.

[0003] Existing battery temperature detection solutions mostly use a single temperature sensor to detect the temperature at a single point on one side of the battery surface. However, the internal heat conduction of the battery is uneven, and single-point detection on one side cannot reflect the overall temperature distribution of the battery. This can easily lead to misjudgment of temperature due to local temperature differences. Therefore, a battery pack temperature detection device is needed to simultaneously detect the temperature on both sides of the battery to be tested, thereby improving the accuracy of battery temperature detection. Utility Model Content

[0004] To address this issue, this invention provides a battery pack temperature detection device that uses a temperature detection component to solve the problem that battery temperature detection often relies on a single temperature sensor to detect the temperature on one side of the battery, which can easily lead to misjudgments of the battery temperature.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a battery pack temperature detection device, comprising a battery box body, a battery mounting slot fixedly provided inside the battery box body, a battery pack body fixedly provided inside the battery mounting slot, battery numbers provided on both sides of the battery pack body, a battery box cover body fixedly provided on the top of the battery box body, a temperature detection component provided inside the battery box body, the temperature detection component comprising a drive unit and two detector moving units, each detector moving unit comprising a reciprocating lead screw, a limiting strip provided on one side of the reciprocating lead screw, a sliding seat sleeved on the outside of the reciprocating lead screw, a ball bearing groove provided on one side of the sliding seat, and an image sensor and an infrared temperature sensor fixedly connected to the other side of the sliding seat.

[0006] Preferably, the drive unit includes a servo motor, which is fixedly installed inside the battery box body. The output end of the servo motor is fixedly connected to a drive shaft. A toothed synchronous pulley is fixedly sleeved on the outside of the drive shaft. A synchronous belt is sleeved on the outside of the toothed synchronous pulley. Two auxiliary rollers are provided on the outside of the synchronous belt. Two toothed synchronous pulleys are connected inside the synchronous belt.

[0007] Preferably, one end of the drive shaft is connected to one side wall of the battery box body via a bearing.

[0008] Preferably, the synchronous belt is sleeved on the outside of the toothed synchronous pulley one and the two toothed synchronous pulleys two, and the synchronous belt meshes with the toothed synchronous pulley one and the two toothed synchronous pulleys two respectively, and the synchronous belt is driven connected to the toothed synchronous pulley one and the two toothed synchronous pulleys two respectively.

[0009] Preferably, the synchronous belt is tactilely connected to two auxiliary rollers, and one end of each auxiliary roller is connected to one side wall of the battery box body via a bearing.

[0010] Preferably, the two ends of the reciprocating lead screw are respectively connected to the two side walls of the battery box body through bearings, and the reciprocating lead screw passes through the toothed synchronous pulley and is fixedly connected to the toothed synchronous pulley.

[0011] Preferably, the sliding seat is disposed outside the reciprocating screw and connected to the reciprocating screw via a ball screw pair.

[0012] Preferably, the sliding seat is sleeved on the outside of the limiting strip through a ball groove, the limiting strip and the ball groove are connected by rolling balls, and the limiting strip is fixedly connected to one side wall of the battery box body.

[0013] The present invention has the following advantages:

[0014] Infrared temperature sensors are installed on both sides of the battery pack body through two detector moving units, which can simultaneously collect the temperature at different locations on both sides of the battery in real time. Compared with traditional single-side single-point detection, it avoids the problem of misjudgment caused by uneven temperature distribution inside the battery. The sliding seat is driven by a reciprocating screw to make a linear back-and-forth movement along the length of the battery, ensuring that the infrared temperature sensor covers the entire area on both sides of the battery.

[0015] Each detector moving unit is equipped with an image sensor, which simultaneously captures the corresponding battery number while collecting temperature data. Through hardware and software collaborative processing, the precise binding of "temperature data - battery number" is achieved, which facilitates the rapid location of specific batteries with abnormal temperatures and improves the efficiency of fault diagnosis.

[0016] The drive unit uses a combination of servo motor, toothed synchronous pulley, and synchronous belt. The auxiliary roller shaft ensures smooth and slip-free power transmission during the transmission process, guaranteeing synchronous movement of the detector moving units on both sides and avoiding detection deviations caused by asynchronous movement. The sliding seat is connected to the reciprocating screw through a ball screw pair and cooperates with the limit strip through the ball groove to achieve low-friction, high-precision linear motion, improving the reliability and durability of the detection process. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0019] Figure 1 A partial perspective view of the main view provided for this utility model;

[0020] Figure 2 A perspective view of the connection relationship of the temperature detection component provided by this utility model;

[0021] Figure 3 A partially exploded sectional view of the drive unit provided by this utility model;

[0022] Figure 4 A partial exploded perspective view of the detector moving unit provided by this utility model;

[0023] Figure 5 A perspective view of the sliding seat provided by this utility model;

[0024] Figure 6 A front perspective view of this utility model.

[0025] In the diagram: 1 Battery box body, 2 Battery mounting slot, 3 Battery pack body, 4 Battery number, 5 Battery box cover body, 6 Temperature detection component, 61 Drive unit, 611 Servo motor, 612 Drive shaft, 613 Toothed synchronous pulley one, 614 Synchronous belt, 615 Auxiliary roller shaft, 616 Toothed synchronous pulley two, 62 Detector moving unit, 621 Reciprocating lead screw, 622 Limiting strip, 623 Sliding seat, 624 Ball bearing groove, 625 Image sensor, 626 Infrared temperature sensor. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] See attached document Figure 1 - Appendix Figure 6 The present invention provides a battery pack temperature detection device, including a battery box body 1, a battery mounting groove 2 fixedly provided inside the battery box body 1, a battery pack body 3 fixedly provided inside the battery mounting groove 2, battery numbers 4 on both sides of the battery pack body 3, a battery box cover body 5 fixedly provided on the top of the battery box body 1, a temperature detection component 6 provided inside the battery box body 1, the temperature detection component 6 including a drive unit 61 and two detector moving units 62, the detector moving unit 62 including a reciprocating lead screw 621, a limiting strip 622 provided on one side of the reciprocating lead screw 621, a sliding seat 623 sleeved on the outside of the reciprocating lead screw 621, a ball groove 624 provided on one side of the sliding seat 623, and an image sensor 625 and an infrared temperature sensor 626 fixedly connected to the other side of the sliding seat 623;

[0028] In this implementation scheme, to achieve simultaneous temperature detection on both sides of the battery under test, the sliding seats 623 in the moving units 62 of the two detectors are moved linearly back and forth by the drive unit 61. The two sliding seats 623 are respectively sleeved on the outside of their respective reciprocating screws 621 and connected to the reciprocating screws 621 through ball screw pairs. Under the restriction of the ball groove 624 and the limiting strip 622, they can only move synchronously and linearly along the reciprocating screws 621, thereby driving the image sensor 625 and the infrared temperature sensor 626 fixed on the other side of the sliding seat 623 to move synchronously on both sides of the battery pack body 3. During the movement, the infrared temperature sensor 626 collects temperature data at different positions on both sides of the battery in real time, and the image sensor 625 simultaneously captures the corresponding number of the battery with the measured temperature, so that the measured temperature corresponds to the measured battery. The collected temperature data and battery number are transmitted to the sensor signal processing device through the connecting line for analysis, processing, storage and display. If an abnormal temperature or abnormal appearance of the battery is detected, the system will issue an alarm in time to remind the staff to check and deal with it.

[0029] To drive the detector moving unit 62, the device employs the following technical solution: the driving unit 61 includes a servo motor 611, which is fixedly installed inside the battery box body 1. A drive shaft 612 is fixedly connected to the output end of the servo motor 611. A toothed synchronous pulley 613 is fixedly sleeved on the outside of the drive shaft 612. A synchronous belt 614 is sleeved on the outside of the toothed synchronous pulley 613. Two auxiliary rollers 615 are provided outside the synchronous belt 614. Internally connected to the drive shaft 612 are two toothed synchronous pulleys 616. One end of the drive shaft 612 is connected to one side wall of the battery box body 1 via a bearing. A synchronous belt 614 is fitted over the toothed synchronous pulley 613 and the two toothed synchronous pulleys 616, meshing with both. The synchronous belt 614 is driven by both the toothed synchronous pulley 613 and the two toothed synchronous pulleys 616, and is also tactilely connected to two auxiliary rollers 615. Two auxiliary rollers 615 are connected at one end to one side wall of the battery box body 1 via bearings. The two ends of the reciprocating screw 621 are connected to the two side walls of the battery box body 1 via bearings. The reciprocating screw 621 passes through and is fixedly connected to the toothed synchronous pulley 616. The servo motor 611 starts according to a preset program, and its output drives the transmission shaft 612 to rotate, thereby causing the toothed synchronous pulley 613 fixedly sleeved on the outside of the transmission shaft 612 to rotate. The toothed synchronous pulley 613 rotates through the externally sleeved... The synchronous belt 614 transmits power to the two toothed synchronous pulleys 616 connected internally. With the assistance of the two auxiliary rollers 615, the synchronous belt 614 maintains a good meshing state with the toothed synchronous pulley 613 and the two toothed synchronous pulleys 616, stably transmitting power and ensuring the stability and accuracy of power transmission. As the toothed synchronous pulleys 616 rotate, the reciprocating screw 621, which passes through and is fixedly connected to the toothed synchronous pulleys 616, begins to rotate, driving the detector moving unit 62.

[0030] To achieve the goal of allowing the sliding seat 623 to move only linearly along the reciprocating screw 621, the device employs the following technical solution: the sliding seat 623 is sleeved outside the reciprocating screw 621 and connected to it via a ball screw pair; the sliding seat 623 is sleeved outside the limiting strip 622 via a ball groove 624; the limiting strip 622 and the ball groove 624 are connected by rolling balls; the limiting strip 622 is fixedly connected to one side wall of the battery box body 1; the two sliding seats 623 are respectively sleeved outside their respective reciprocating screws 621 and connected to them via ball screw pairs; and under the constraint of the ball groove 624 and the limiting strip 622, the sliding seat 623 can only perform synchronous linear reciprocating motion along the reciprocating screw 621.

[0031] The usage process of this utility model is as follows: When using this utility model, reliably connect the servo motor 611 to the battery pack body 3 and connect it to the control system; at the same time, accurately connect the image sensor 625 and the infrared temperature sensor 626 to the remaining components of the sensor signal processing device. During the connection process, the connecting wires should be properly organized, and fixed and stored using wire grooves, cable ties, etc., to avoid tangling and ensure that the image sensor 625 and the infrared temperature sensor 626 will not interfere with each other when moving, thus affecting the detection work; after completing the preparation work, start the control system and set the detection cycle and detection parameters according to actual needs; the detection cycle can be adjusted according to the battery usage scenario and working conditions. The system allows for flexible adjustments; for example, for batteries operating continuously for extended periods, the detection cycle can be shortened to enable more frequent monitoring. Detection parameters include temperature warning thresholds and image capture resolution. Once set, the servo motor 611 starts according to a preset program, and its output drives the transmission shaft 612 to rotate, which in turn causes the toothed synchronous pulley 613 fixedly mounted on the outside of the transmission shaft 612 to rotate. The toothed synchronous pulley 613 transmits power to the two internally connected toothed synchronous pulleys 616 through an externally mounted synchronous belt 614. With the assistance of two auxiliary rollers 615, the synchronous belt 614 maintains good meshing with the toothed synchronous pulley 613 and the two toothed synchronous pulleys 616, stably transmitting power. This ensures the stability and accuracy of power transmission. As the toothed synchronous pulley 616 rotates, the reciprocating screw 621, which passes through and is fixedly connected to the toothed synchronous pulley 616, begins to rotate. Two sliding seats 623 are respectively sleeved on the outside of their respective reciprocating screws 621 and connected to the reciprocating screws 621 through ball screw pairs. Under the restriction of the ball groove 624 and the limiting strip 622, they can only make synchronous linear reciprocating motion along the reciprocating screw 621, thereby driving the image sensor 625 and the infrared temperature sensor 626 fixed on the other side of the sliding seat 623 to move synchronously on both sides of the battery pack body 3. During the movement, the infrared temperature sensor 626 collects data from different positions on both sides of the battery in real time. Temperature data is simultaneously captured by image sensor 625, which identifies the corresponding battery number at the measured temperature, ensuring that the measured temperature corresponds to the measured battery. The collected temperature data and battery number are transmitted to the sensor signal processing device via a connecting cable for analysis, processing, storage, and display. If an abnormal temperature or abnormal battery appearance is detected, the system will promptly issue an alarm to remind staff to inspect and handle the issue. The auxiliary roller 615 assists in improving the coverage effect of the synchronous belt 614 on the toothed synchronous pulley 613 and toothed synchronous pulley 616, ensuring that the synchronous belt 614 has a sufficient driving coverage angle for the toothed synchronous pulley 613 and toothed synchronous pulley 616, thus guaranteeing the stability of power transmission.

[0032] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A battery pack temperature detection device, comprising a battery box body (1), characterized in that: The battery box body (1) is fixedly provided with a battery mounting slot (2), the battery mounting slot (2) is fixedly provided with a battery pack body (3), the battery pack body (3) is provided with battery numbers (4) on both sides, the battery box body (1) is fixedly provided with a battery box cover body (5), the battery box body (1) is provided with a temperature detection component (6), the temperature detection component (6) includes a drive unit (61) and two detector moving units (62), the detector moving unit (62) includes a reciprocating screw (621), the reciprocating screw (621) is provided with a limit strip (622) on one side, the reciprocating screw (621) is provided with a sliding seat (623) on the outside, the sliding seat (623) is provided with a ball groove (624) on one side, and an image sensor (625) and an infrared temperature sensor (626) are fixedly connected to the other side of the sliding seat (623).

2. The battery pack temperature detection device according to claim 1, characterized in that: The drive unit (61) includes a servo motor (611), which is fixedly installed inside the battery box body (1). The output end of the servo motor (611) is fixedly connected to a transmission shaft (612). A toothed synchronous pulley (613) is fixedly sleeved on the outside of the transmission shaft (612). A synchronous belt (614) is sleeved on the outside of the toothed synchronous pulley (613). Two auxiliary rollers (615) are provided on the outside of the synchronous belt (614). Two toothed synchronous pulleys (616) are connected inside the synchronous belt (614).

3. The battery pack temperature detection device according to claim 2, characterized in that: One end of the drive shaft (612) is connected to one side wall of the battery box body (1) via a bearing.

4. The battery pack temperature detection device according to claim 2, characterized in that: The synchronous belt (614) is sleeved on the outside of the toothed synchronous pulley one (613) and the two toothed synchronous pulleys two (616). The synchronous belt (614) meshes with the toothed synchronous pulley one (613) and the two toothed synchronous pulleys two (616) respectively. The synchronous belt (614) is driven and connected to the toothed synchronous pulley one (613) and the two toothed synchronous pulleys two (616) respectively.

5. The battery pack temperature detection device according to claim 2, characterized in that: The synchronous belt (614) is tumbledly connected to two auxiliary rollers (615), and one end of each of the two auxiliary rollers (615) is connected to one side wall of the battery box body (1) via a bearing.

6. The battery pack temperature detection device according to claim 2, characterized in that: The two ends of the reciprocating lead screw (621) are respectively connected to the two side walls of the battery box body (1) through bearings. The reciprocating lead screw (621) passes through the toothed synchronous wheel (616) and is fixedly connected to the toothed synchronous wheel (616).

7. The battery pack temperature detection device according to claim 1, characterized in that: The sliding seat (623) is sleeved on the outside of the reciprocating screw (621) and connected to the reciprocating screw (621) through a ball screw pair.

8. The battery pack temperature detection device according to claim 1, characterized in that: The sliding seat (623) is fitted onto the outside of the limiting strip (622) through the ball groove (624). The limiting strip (622) and the ball groove (624) are connected by rolling balls. The limiting strip (622) is fixedly connected to one side wall of the battery box body (1).

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