A battery temperature control module with self-test function

Abstract

This utility model relates to the field of battery thermal management technology and discloses a battery temperature control module with self-testing function. It includes a protective housing with a cross-shaped partition plate installed inside. Multiple battery packs are placed inside the housing. A cross-shaped placement slot is formed at the upper end of the partition plate, and two warning components are installed in the slot to remind personnel to check the internal temperature of the housing. This utility model achieves graded temperature warning by setting a centrally symmetrical structure driven by two spiral bimetallic strips. When a local overheating occurs, a single-sided warning light illuminates to indicate an abnormality; a double-sided warning light confirms the fault to avoid false alarms. When the battery pack temperature is overloaded, two sliding blocks simultaneously trigger a buzzer alarm for a forced alarm. Physical contact switches and dual mechanical verification ensure absolute signal reliability, while a cross-validation mechanism balances warning accuracy and system robustness.

Description

Technical Field

[0001] This utility model relates to the field of battery thermal management technology, specifically to a battery temperature control module with self-testing function. Background Technology

[0002] As an energy storage medium, batteries generate Joule heat and chemical reaction heat during charging and discharging, which can easily cause local temperature rise. When the temperature exceeds the critical value, it may induce a chain reaction of thermal runaway. Traditional battery temperature control modules generally adopt temperature monitoring schemes that combine electronic sensors with control circuits, and their self-testing mechanism relies on periodic signal verification or software diagnostic processes.

[0003] However, electronic sensors are susceptible to signal drift caused by environmental electromagnetic interference and material aging, leading to false alarms and missed alarms. More importantly, their self-testing function requires the normal operation of electronic components as a prerequisite, creating a logical closed-loop paradox of "electronic system testing electronic system." Once the core sensor fails, the entire self-testing function will fail. Furthermore, current solutions mostly adopt a single-sensor, single-channel judgment architecture, lacking redundancy and backup design. When a single sensor malfunctions, it not only fails to accurately identify its own fault state but also directly paralyzes the entire temperature protection function, posing a significant hidden danger in safety scenarios such as battery thermal runaway that require absolute reliability. Therefore, those skilled in the art provide a battery temperature control module with a self-testing function to solve the problems mentioned in the background. Utility Model Content

[0004] The purpose of this invention is to provide a battery temperature control module with self-testing function to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a battery temperature control module with self-test function, including a protective housing, a cross-shaped partition plate installed inside the housing, multiple battery packs placed inside the housing, a cross-shaped placement groove opened at the upper end of the cross-shaped partition plate, two warning components installed in the cross-shaped placement groove to remind personnel to check the internal temperature of the housing, and an alarm component installed on the inner wall of the cross-shaped placement groove to warn of excessive internal temperature of the housing.

[0006] As a preferred embodiment of the above technical solution, the warning component includes a vertical plate, a first slide rail, a second slide rail, a warning light, and a first contact switch. The vertical plate is fixedly connected to the bottom side of the inner wall of the cross-shaped placement groove. The first slide rail is fixedly connected to the inner side wall of the cross-shaped placement groove. The second slide rail is fixedly connected to the upper part of the cross-shaped placement groove. The warning light is fixedly connected to the upper part of the outer wall of the housing. The first contact switch is fixedly installed on the upper part of the inner side wall of the cross-shaped placement groove.

[0007] As a preferred embodiment of the above technical solution, a fixing cylinder is fixedly connected to the side wall of the upright plate, a spiral bimetallic strip is fixedly connected to the inner wall of the fixing cylinder, a rotating rod is fixedly connected to the front end of the spiral bimetallic strip, the rotating rod is rotatably sleeved at the center of the end of the fixing cylinder away from the upright plate, a first connecting rod is fixedly connected to the end of the rotating rod away from the upright plate, and a second connecting rod is rotatably connected to the outer wall of the first connecting rod away from the rotating rod.

[0008] As a preferred embodiment of the above technical solution, a sliding block is slidably connected to the outside of the first slide rail, and the outer wall of the second connecting rod is rotatably connected to the center of one side of the sliding block at the side away from the first connecting rod. A toggle rod is slidably connected to the outside of the second slide rail, and an arc-shaped toggle plate is fixedly connected to the lower end of the toggle rod. The upper end of the toggle rod is directly opposite the first contact switch.

[0009] As a preferred embodiment of the above technical solution, the alarm assembly includes two second contact switches, push rods, and a buzzer alarm. There are two second contact switches and two push rods. The two second contact switches are fixedly connected to the inner wall of the cross-shaped placement slot. The two push rods are fixedly connected to one side of the two sliding blocks, and the two push rods are respectively facing the two second contact switches. The buzzer alarm is fixedly installed on one side of the outer wall of the housing.

[0010] As a preferred embodiment of the above technical solution, the inner wall of the cross-shaped placement groove is provided with multiple vents, all of which are connected to the interior of the shell. Multiple heat-conducting fins are fixedly connected to the outer wall of the cross partition plate and the inner wall of the shell.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By setting two centrally symmetrical warning components, and using a double-helix bimetallic strip, a rotating rod, a first connecting rod, and a second connecting rod to move the sliding block, when the battery pack temperature is abnormal, the sliding block moves to the middle position of the first slide rail, and the arc-shaped toggle plate drives the toggle rod to rise and touch the bottom of the first contact switch. At this time, the warning light is lit, realizing the warning of abnormal battery pack temperature. The single-sided warning light indicates local overheating, and the cross-verification of the dual warning lights avoids false alarms. That is, manual intervention is triggered only when both warning lights are lit at the same time. The entire process does not require the participation of electronic sensors. It only relies on the thermo-mechanical energy conversion to complete the transition from temperature perception to visual warning. While improving the reliability of the module, it significantly reduces the failure risk of complex circuits.

[0013] 2. When the battery pack temperature is overloaded, the push rods on the two sliding blocks contact the second contact switch side, and then the buzzer alarm sounds an audible warning. The physical contact switch ensures reliable signal and avoids misjudgment by the electronic system. It also uses double confirmation, that is, both sliding blocks are in place at the same time, to completely eliminate false action caused by unilateral faults. This allows any real overheating danger to be immediately identified and trigger the shutdown protection, thereby cutting off the risk chain before the battery pack may thermal runaway. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of a battery temperature control module with self-testing function;

[0015] Figure 2 A cross-sectional view of the main structure of a battery temperature control module with self-testing function;

[0016] Figure 3 This is a schematic diagram of the warning component and alarm component of a battery temperature control module with self-test function;

[0017] Figure 4 This is a schematic diagram of the warning light and buzzer alarm of a battery temperature control module with self-test function.

[0018] Legend:

[0019] 1. Housing; 2. Cross-shaped partition plate; 3. Battery pack; 4. Cross-shaped placement slot; 5. Warning assembly; 501. Vertical plate; 502. First slide rail; 503. Second slide rail; 504. Warning light; 505. First contact switch; 506. Fixed cylinder; 507. Spiral bimetallic strip; 508. Rotating rod; 509. First connecting rod; 510. Second connecting rod; 511. Sliding block; 512. Toggle lever; 513. Arc-shaped toggle plate; 6. Alarm assembly; 601. Second contact switch; 602. Push rod; 603. Buzzer alarm; 7. Vent; 8. Heat-conducting fins. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figure 1 - Figure 4 As shown, this utility model provides a technical solution: a battery temperature control module with self-testing function, including a protective housing 1, a cross-shaped partition plate 2 installed inside the housing 1, multiple battery packs 3 placed inside the housing 1, a cross-shaped placement groove 4 opened at the upper end of the cross-shaped partition plate 2, two warning components 5 installed in the cross-shaped placement groove 4 to remind personnel to check the internal temperature of the housing 1, and an alarm component 6 installed on the inner wall of the cross-shaped placement groove 4 to warn of excessive internal temperature of the housing 1.

[0022] As one implementation method in this embodiment, please refer to Figure 1 - Figure 4 As shown, the warning component 5 includes a vertical plate 501, a first slide rail 502, a second slide rail 503, a warning light 504, and a first contact switch 505. The vertical plate 501 is fixedly connected to the bottom side of the inner wall of the cross-shaped placement groove 4. The first slide rail 502 is fixedly connected to the inner side wall of the cross-shaped placement groove 4. The second slide rail 503 is fixedly connected to the upper part of the cross-shaped placement groove 4. The warning light 504 is fixedly connected to the upper part of the outer wall of the housing 1. The first contact switch 505 is fixedly installed on the upper part of the inner side wall of the cross-shaped placement groove 4.

[0023] A fixed cylinder 506 is fixedly connected to the side wall of the upright plate 501. A spiral bimetallic strip 507 is fixedly connected to the inner wall of the fixed cylinder 506. A rotating rod 508 is fixedly connected to the front end of the spiral bimetallic strip 507. The rotating rod 508 is rotatably sleeved at the center of the end of the fixed cylinder 506 away from the upright plate 501. A first connecting rod 509 is fixedly connected to the end of the rotating rod 508 away from the upright plate 501. A second connecting rod 510 is rotatably connected to the outer wall of the first connecting rod 509 away from the rotating rod 508.

[0024] A sliding block 511 is slidably connected to the outside of the first slide rail 502. The outer wall of the second connecting rod 510 is rotatably connected to the center of one side of the sliding block 511 at the side away from the first connecting rod 509. A toggle rod 512 is slidably connected to the outside of the second slide rail 503. An arc-shaped toggle plate 513 is fixedly connected to the lower end of the toggle rod 512. The upper end of the toggle rod 512 is directly opposite the first contact switch 505.

[0025] Furthermore, through two centrally symmetrically arranged warning components 5 within the cross-shaped placement slot 4, when the battery pack 3 experiences an abnormal temperature, the spiral bimetallic strip 507 will rotate. The spiral bimetallic strip 507 is based on a composite of two metals with different coefficients of thermal expansion. When the temperature changes, uneven deformation occurs due to the different expansion amounts of the two metal layers, causing the entire structure to bend towards the side with the lower coefficient of expansion. In the spiral structure design, this bending deformation is converted into rotational motion. When the temperature rises, the spiral diameter contracts or expands, thus the spiral bimetallic strip... Plate 507 drives rotating rod 508 to rotate. Under the limitation of fixed cylinder 506, rotating rod 508 will rotate on its own axis, first connecting rod 509 will rotate, and second connecting rod 510 will rotate on first connecting rod 509 and sliding block 511. Second connecting rod 510 can drive sliding block 511 to slide outside the first slide rail 502. When sliding block 511 moves to the middle position of the first slide rail 502, the side wall of sliding block 511 will contact the arc surface of arc-shaped actuating plate 513. At this time, the arc surface of arc-shaped actuating plate 513 will decompose the thrust. The arc-shaped toggle plate 513 is subjected to an upward force, causing it to rise. The output terminal of the first contact switch 505 is located on the warning light 504. When the first contact switch 505 is pressed, the operation signal is fed back to the terminal, which converts the operation signal and generates an execution signal. The terminal then sends the execution command to the corresponding warning light 504. This direct metal-contact conductivity method avoids signal delays from electronic components and ensures absolute reliability of circuit switching. The toggle lever 512 rises and touches the bottom of the first contact switch 505, at which point the warning light 504 lights up, providing an alert for abnormal temperature in the battery pack 3. When one side of the warning light 504 lights up, it indicates local overheating. When both sides of the warning light 504 light up, it indicates an overall abnormal temperature in the battery pack 3. Cross-verification using dual warning lights 504 avoids false alarms. Manual intervention is only triggered when both sides of the warning light 504 light up simultaneously. The entire process requires no electronic sensors; it relies solely on thermo-mechanical energy conversion to complete the transition from temperature perception to visual warning. This significantly reduces the risk of failure in complex circuits while improving module reliability.

[0026] As one implementation method in this embodiment, please refer to Figure 3 - Figure 4 As shown, the alarm assembly 6 includes two second contact switches 601, a push rod 602, and a buzzer 603. There are two second contact switches 601 and two push rods 602. The two second contact switches 601 are fixedly connected to the inner wall of the cross-shaped placement groove 4. The two push rods 602 are respectively fixedly connected to one side of the two sliding blocks 511. The two push rods 602 are respectively facing the two second contact switches 601. The buzzer 603 is fixedly installed on one side of the outer wall of the housing 1.

[0027] Furthermore, when the battery pack 3 is overloaded, the spiral bimetallic strip 507 continues to rotate. The output terminals of the two second contact switches 601 are jointly set on the buzzer alarm 603. The push rods 602 on the two sliding blocks 511 contact one side of the second contact switch 601. When the contacts of the second contact switch 601 are connected under pressure, a current path is formed. The buzzer alarm 603 directly converts DC power into an audio signal through the built-in oscillator to drive the electromagnet to vibrate the metal diaphragm and produce sound. The rapid conversion from mechanical action to acoustic warning can be achieved solely by the reliability of physical contact. The use of physical contact switches ensures signal reliability and avoids misjudgment by the electronic system. Furthermore, through double confirmation, that is, the two sliding blocks 511 are in place at the same time, the false action caused by a single-sided fault is completely eliminated. This allows any real overheating hazard to be immediately identified and trigger the shutdown protection, thereby cutting off the risk chain before the battery pack 3 may experience thermal runaway.

[0028] As one implementation method in this embodiment, please refer to Figure 1 - Figure 2 As shown, the inner wall of the cross-shaped placement groove 4 has multiple vents 7, all of which are connected to the interior of the shell 1. Multiple heat-conducting fins 8 are fixedly connected to the outer wall of the cross partition plate 2 and the inner wall of the shell 1.

[0029] Furthermore, the vent 7 is designed to ensure that heat is evenly distributed within the housing 1 and the cross-shaped placement slot 4, and the heat dissipation fins can conduct the heat generated by the battery pack 3 inside the housing 1 to the cross-shaped placement slot 4, thus preventing uneven heat distribution within the cross-shaped placement slot 4 from causing false alarms in the warning component 5 and alarm component 6.

[0030] Working principle: Two warning components 5 are symmetrically arranged within the cross-shaped placement slot 4. When the battery pack 3 experiences an abnormal temperature, the spiral bimetallic strip 507 rotates, causing the rotating rod 508 to rotate. Limited by the fixed cylinder 506, the rotating rod 508 rotates, causing the first connecting rod 509 to rotate. The second connecting rod 510 then rotates on the first connecting rod 509 and the sliding block 511. The second connecting rod 510 then drives the sliding block 511 to rotate on the first connecting rod 509 and the sliding block 511. The slide block 511 moves to the middle position of the first slide rail 502. The side wall of the slide block 511 will contact the arc-shaped surface of the arc-shaped actuating plate 513. At this time, the arc-shaped surface of the arc-shaped actuating plate 513 will decompose the thrust, so that the arc-shaped actuating plate 513 is subjected to an upward force. The arc-shaped actuating plate 513 rises, which will cause the actuating lever 512 to rise and touch the bottom of the first contact switch 505. At this time, the warning light 504 will light up, realizing the warning of abnormal temperature of battery pack 3. When one side of the warning light is on, the warning light 504 will light up. When indicator light 504 illuminates, it indicates localized overheating. When both indicator lights 504 illuminate, it indicates an overall abnormal temperature in battery pack 3. False alarms are avoided through cross-verification using dual indicator lights 504; manual intervention is only triggered when both indicator lights 504 illuminate simultaneously. The entire process requires no electronic sensors; it relies solely on thermo-mechanical energy conversion to complete the transition from temperature sensing to visual warning. This significantly reduces the risk of failure in complex circuits while improving module reliability. When battery pack 3 is overloaded, the spiral bimetallic strip 507 rotates continuously, causing the push rods 602 on the two sliding blocks 511 to contact one side of the second contact switch 601. Subsequently, the buzzer alarm 603 sounds an audible warning. The physical contact switch ensures signal reliability and avoids misjudgment by the electronic system. Furthermore, through double confirmation—both sliding blocks 511 simultaneously reaching their positions—false actions caused by unilateral faults are completely eliminated. This ensures that any real overheating hazard can be immediately identified and trigger shutdown protection, thus cutting off the risk chain before battery pack 3 may experience thermal runaway.

[0031] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A battery temperature control module with self-checking function, comprising a housing (1) for protection, characterized in that: A cross-shaped partition plate (2) is installed inside the housing (1). Multiple battery packs (3) are placed inside the housing (1). A cross-shaped placement groove (4) is opened at the upper end of the cross-shaped partition plate (2). Two warning components (5) for reminding personnel to check the internal temperature of the housing (1) are installed in the cross-shaped placement groove (4). An alarm component (6) for warning that the internal temperature of the housing (1) exceeds the limit is installed on the inner wall of the cross-shaped placement groove (4).

2. The battery temperature control module with self-checking function according to claim 1, characterized in that: The warning component (5) includes a stand plate (501), a first slide rail (502), a second slide rail (503), a warning light (504), and a first contact switch (505). The stand plate (501) is fixedly connected to the bottom side of the inner wall of the cross-shaped placement groove (4). The first slide rail (502) is fixedly connected to the inner side wall of the cross-shaped placement groove (4). The second slide rail (503) is fixedly connected to the upper part of the cross-shaped placement groove (4). The warning light (504) is fixedly connected to the upper part of the outer wall of the housing (1). The first contact switch (505) is fixedly installed on the upper part of the inner side wall of the cross-shaped placement groove (4).

3. The battery temperature control module with self-checking function according to claim 2, characterized in that: A fixed cylinder (506) is fixedly connected to the side wall of the upright plate (501). A spiral bimetallic strip (507) is fixedly connected to the inner wall of the fixed cylinder (506). A rotating rod (508) is fixedly connected to the front end of the spiral bimetallic strip (507). The rotating rod (508) is rotatably sleeved at the center of the end of the fixed cylinder (506) away from the upright plate (501). A first connecting rod (509) is fixedly connected to the end of the rotating rod (508) away from the upright plate (501). A second connecting rod (510) is rotatably connected to the outer wall of the first connecting rod (509) away from the rotating rod (508).

4. A battery temperature control module with self-test function according to claim 3, characterized in that: A sliding block (511) is slidably connected to the outside of the first slide rail (502). The outer wall of the second connecting rod (510) is rotatably connected to the center of one side of the sliding block (511) at the side away from the first connecting rod (509). A toggle rod (512) is slidably connected to the outside of the second slide rail (503). An arc-shaped toggle plate (513) is fixedly connected to the lower end of the toggle rod (512). The upper end of the toggle rod (512) is directly opposite the first contact switch (505).

5. A battery temperature control module with self-test function according to claim 4, characterized in that: The alarm assembly (6) includes two second contact switches (601), a push rod (602), and a buzzer (603). There are two of each of the second contact switches (601) and push rods (602). The two second contact switches (601) are fixedly connected to the inner wall of the cross-shaped placement slot (4). The two push rods (602) are respectively fixedly connected to one side of the two sliding blocks (511). The two push rods (602) are respectively facing the two second contact switches (601). The buzzer (603) is fixedly installed on one side of the outer wall of the housing (1).

6. A battery temperature control module with self-test function according to claim 1, characterized in that: The inner wall of the cross-shaped placement groove (4) is provided with multiple vents (7), and the multiple vents (7) are all connected to the inside of the shell (1). Multiple heat-conducting fins (8) are fixedly connected to the outer wall of the cross partition plate (2) and the inner wall of the shell (1).

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