Battery overcharge and forced discharge monitoring device

Abstract

The utility model relates to a battery overcharge and forced discharge monitoring device, and relates to the technical field of battery performance monitoring. Comprising a protective cover shell used for placing a battery and avoiding the risk of burning explosion of the battery, a placing platform is fixedly arranged on the lower inner wall of the protective cover shell, and a temperature rise monitor is arranged in the protective cover shell and used for monitoring the temperature of the battery in real time; according to the utility model, parameters are set through the power supply load cabinet to realize automatic detection of the charging and discharging performance of the battery, so that the high efficiency of battery detection is greatly improved, the charging and discharging performance detection of the battery can be completed in a short time, and the test period is improved; secondly, the temperature change of a battery area is monitored through a temperature rise monitor, the risk of fire blast is considered to exist when the temperature rise of a central point exceeds a certain temperature, protection is carried out through a protective cover, then the temperature rise monitor enables the temperature rise of the area to be mutually conducted, evaluation is more stable and objective, and errors caused by inaccurate distribution and control points are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery performance monitoring, in particular to a battery overcharge and forced discharge monitoring device. Background Art

[0002] A battery overcharge and forced discharge monitoring device is a device used to monitor the battery's charging state and forced discharge state. It usually consists of a battery management system (BMS) that uses sensors and circuits to monitor the battery's charging and discharging voltage and current.

[0003] Battery overcharge means that during the battery charging process, the voltage or current exceeds the maximum value that the battery can withstand. Overcharging will shorten the battery life and even cause safety issues such as gas generation and explosion inside the battery. Battery forced discharge monitoring is mainly to evaluate the ability of rechargeable batteries or primary batteries to withstand forced discharge conditions. It is mainly carried out by forced discharge when the starting current is the same as the discharge current given by the manufacturer. For rechargeable batteries or primary batteries, monitor whether they burn or disintegrate within a period of time. Therefore, the role of the battery overcharge and forced discharge monitoring device is to timely monitor the rechargeable battery's ability to withstand overcharge conditions and its ability to withstand forced discharge conditions.

[0004] Therefore, in the prior art, an overall detection device for the battery charging and discharging process is provided, which generally connects the battery directly to a power load, then controls the battery to perform forced discharge and overcharge, and simultaneously observes the integrity of the battery.

[0005] However, the above existing devices still have some shortcomings in actual use:

[0006] 1. In the above-mentioned prior art, the quality of the battery charging and discharging process is manually determined, and the final determination result is uncertain. Manual visual determination may lead to an inability to accurately determine the battery's precursor characteristics of catching fire and disintegration, such as high temperature and micro-bulging.

[0007] 2. Secondly, when the existing technology performs charge and discharge detection on the battery, there is a risk of battery explosion during overcharging and forced discharge. The existing technology has no protective device, which can easily lead to dangerous situations such as personal injury after the battery explodes.

[0008] 3. In the prior art, the charge and discharge detection method for batteries is relatively traditional and requires manual control of test parameters for a long time, which results in poor efficiency in battery detection.

[0009] Therefore, based on the above-stated viewpoints, there is still room for improvement in the existing battery overcharge and forced discharge monitoring devices. Utility Model Content

[0010] In order to solve the above problems, the utility model provides a battery overcharge and forced discharge monitoring device.

[0011] A battery overcharge and forced discharge monitoring device comprises a protective cover shell for placing the battery and also avoiding the risk of battery explosion. The lower inner wall of the protective cover shell is fixedly provided with a placement platform.

[0012] A temperature rise monitor is arranged inside the protective cover shell, and the temperature rise monitor includes aluminum foil strips, temperature control monitoring sheets and temperature control digital display devices. Several of the aluminum foil strips are arranged at the bottom of the placement platform in an end-to-end connection manner, and the aluminum foil strips are distributed in a pentagonal shape. Several of the temperature control monitoring sheets are arranged at the upper end of the placement platform in a five-point plum blossom arrangement manner and are connected to the five corners of the aluminum foil strips; another temperature control monitoring sheet is arranged in the middle of the upper end of the placement platform, and the temperature control digital display device is connected to the upper end of the protective cover shell, and the temperature control digital display device is connected to several temperature control monitoring sheets through wires.

[0013] Furthermore, the protective cover shell includes a protective shell and an observation shell. The protective cover shell is arranged in the form of a five-sided protective shell, and the upper end of the protective shell is open. The observation shell is installed on the protective shell in a hinged manner and controls the opening and closing of the observation shell.

[0014] Furthermore, a power load cabinet is provided on one side of the protective cover shell, and a power wire connected to the battery is provided on the power load cabinet. The power wire slides through the protective shell at one end away from the power load cabinet and extends in the direction of the battery plug-in interface.

[0015] Furthermore, the protective cover shell is also provided with a micro-deformation detection component for accurately detecting battery bulging, and the micro-deformation detection component includes a micro-deformation detection horizontal plate, a fixed horizontal plate, a micro-spring and a detection scale line. The side wall of the protective cover shell is symmetrically provided with vertical slide grooves, and micro-springs are symmetrically installed in the vertical slide grooves on the protective cover shell. The micro-deformation detection horizontal plate is slid up and down inside the protective cover shell, and the micro-deformation detection horizontal plate is against the battery. The fixed horizontal plate is fixedly connected to the two ends of the micro-deformation detection horizontal plate in the length direction, and the two fixed horizontal plates are slid up and down in the vertical slide grooves of the protective cover shell, and the fixed horizontal plate is connected to the micro-spring.

[0016] Furthermore, the placement platform is also provided with a clamping component for clamping and fixing the battery, the clamping component includes a No. 1 clamp, a No. 2 clamp and a reset spring, the No. 1 clamp and the No. 2 clamp are installed in the middle of the placement platform in a relative sliding manner, and a clamping groove for the No. 1 clamp and the No. 2 clamp is provided on the placement platform for the sliding of the No. 1 clamp and the No. 2 clamp, the reset spring is arranged between the No. 1 clamp and the No. 2 clamp, one end is fixedly connected to the No. 1 clamp, and the other end is connected to the No. 2 clamp.

[0017] Furthermore, a synchronous telescopic component is provided between the No. 1 splint and the No. 2 splint, and the synchronous telescopic component includes a synchronous gear and a synchronous rack. The synchronous gear is fixedly mounted on the placement platform, and the synchronous gear is located in the clamping slide groove. The synchronous rack is respectively fixedly connected to the horizontal ends of the No. 1 splint and the No. 2 splint, and the No. 1 splint, the No. 2 splint and the synchronous gear are meshed with each other.

[0018] Furthermore, a plurality of pressure relief vent holes for preventing battery explosion are provided at equal intervals on the protective shell, an exhaust tension spring is installed in the pressure relief vent hole through a bracket, a conical sealing block is fixedly connected to one end of the exhaust tension spring away from the bracket, and the conical sealing block is pressed against the pressure relief vent hole through an inclined surface.

[0019] Furthermore, a mounting groove for placing the battery is provided on the protective shell of the protective cover shell, a closing door is hinged in the mounting groove, and a movable latch is provided between the closing door and the protective shell.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. The utility model realizes automatic detection of battery charge and discharge performance detection by setting parameters of the power load cabinet, which greatly improves the efficiency of battery detection, can ensure that the battery completes the charge and discharge performance detection in a shorter time, improves the test cycle, and can complete the test 1 hour after overcharging and forced discharge.

[0022] 2. The utility model seals and protects the battery through a protective cover shell to ensure that the battery is always in the protective cover shell during the performance test, preventing the battery from exploding during the test and avoiding damage to the human body after the battery explodes. Secondly, the side wall of the protective cover shell is provided with a pressure relief vent hole, which can quickly release the pressure generated by the battery after the explosion, avoiding the high pressure generated by the battery explosion causing a secondary explosion of the protective cover shell.

[0023] 3. The utility model improves the efficiency and accuracy of battery temperature control monitoring by monitoring the temperature changes at 6 points in the center area of ​​the battery. It adopts a 5-point plum blossom arrangement, connected in series by aluminum foil strips, to monitor regional temperature changes. When the temperature rise at the center exceeds 35K and the temperature rise in the ring exceeds 25K, it is considered that there is a risk of explosion; and the regional temperature rise is mutually transmitted, the evaluation is more stable and objective, and errors caused by inaccurate control points are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the main structure of the utility model from a first viewing angle.

[0026] Figure 2 It is a second viewing angle schematic diagram of the main structure of the utility model.

[0027] Figure 3 It is a structural schematic diagram of the protective shell of the utility model.

[0028] Figure 4 It is a first-view structural schematic diagram of the clamping component of the utility model.

[0029] Figure 5 It is a second perspective structural schematic diagram of the clamping component of the utility model.

[0030] Figure 6 It is a structural schematic diagram between the clamping component and the synchronous telescopic component of the utility model.

[0031] Figure 7 It is an exploded view of the structure between the clamping component and the synchronous telescopic component of the utility model.

[0032] Figure 8 It is a first-view structural schematic diagram of the temperature rise monitor of the utility model.

[0033] Fig. 9 It is a first-view structural schematic diagram of the temperature rise monitor of the utility model.

[0034] Fig.10 It is a structural schematic diagram of the micro-deformation detection component of the utility model.

[0035] Fig.11 It is a structural schematic diagram of a pressure relief exhaust hole, an exhaust tension spring and a conical sealing block in the utility model.

[0036] In the figure, 1. protective cover shell; 2. placing platform; 3. temperature rise monitor; 30. aluminum foil strip; 31. temperature control monitoring sheet; 32. temperature control digital display device; 10. protective shell; 11. observation shell; 12. power load cabinet; 13. power wire; 4. micro deformation detection component; 40. micro deformation detection horizontal plate; 41. fixed horizontal plate; 42. micro spring; 43. detection scale line; 5. clamping part; 50. No. 1 clamping plate; 51. No. 2 clamping plate; 52. reset spring; 6. synchronous telescopic part; 60. synchronous gear; 61. synchronous rack; 7. pressure relief exhaust hole; 71. exhaust spring; 72. conical sealing block; 80. mounting groove; 81. closing door; 82. movable latch. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-Figure 11 Although the embodiments of the present invention have been described in detail, the present invention can be implemented in many different ways as defined and covered by the claims.

[0038] The embodiment of the present application discloses a battery overcharge and forced discharge monitoring device, which explains that the battery overcharge and forced discharge monitoring device is mainly used in the process of battery charging and discharging performance detection, and can avoid the problem of low battery monitoring efficiency in terms of technical effect; especially when the battery is charged and discharged, the battery is protected to prevent the battery from causing harm to the tester after the explosion; further, the present application can also accurately detect the high temperature and micro-bulging of the battery, avoiding the occurrence of the previous characteristics of the battery fire and disintegration phenomenon which cannot be visually observed.

[0039] Reference Figure 1 As shown, a battery overcharge and forced discharge monitoring device includes a protective cover shell 1 for placing the battery and also avoiding the risk of battery explosion. A placement platform 2 is fixedly provided on the lower inner wall of the protective cover shell 1.

[0040] The protective shell 10 of the protective cover shell 1 is provided with an installation slot 80 for placing the battery, a closing door 81 is hinged in the installation slot 80 , and a movable latch 82 is provided between the closing door 81 and the protective shell 10 .

[0041] First, when the battery needs to be tested, the closed door 81 on the protective shell 10 is opened by the movable latch 82, and then the battery is placed on the placement platform 2 in the protective cover shell 1, and the battery plug port is connected to the power wire 13 of the power load cabinet 12, so that the performance test of battery charging and discharging can be realized.

[0042] The movable latch 82 is a known structure, that is, it is commonly used in homes for opening and closing doors. The movable latch 82 can realize the opening and closing of the closed door 81.

[0043] Reference Figure 2and Figure 3 As shown, that is, a structural schematic diagram for battery charging and discharging performance detection in this embodiment; specifically, a power load cabinet 12 is also provided on one side of the protective cover shell 1, and a power supply wire 13 connected to the battery is provided on the power supply load cabinet 12. The power supply wire 13 slides through the protective shell 10 at one end away from the power supply load cabinet 12 and extends in the direction of the battery plug-in interface.

[0044] One end of the power-carrying wire 13 close to the protective housing 10 is movably arranged to ensure quick connection between the battery and the power-carrying wire 13 .

[0045] The power load cabinet 12 is generally controlled by a PLC program, and different parameters can be set to control the current and voltage required for charging and discharging the battery.

[0046] Reference Figure 3 As shown, that is, a schematic diagram of the structure of the protective cover body in this embodiment; specifically, the protective cover shell 1 includes a protective shell 10 and an observation shell 11. The protective cover shell 1 is arranged in the form of a five-sided protective shell 10, and the upper end of the protective shell 10 is an opening distribution. The observation shell 11 is installed on the protective shell 10 in a hinged manner, and the observation shell 11 is controlled to open and close.

[0047] It should be noted that the entire protective cover shell 1 is a rectangular parallelepiped structure, and batteries of different sizes can be placed inside it, thereby ensuring that the present application can perform charge and discharge detection on batteries of different sizes, greatly improving the adaptability of the entire device.

[0048] First, the protective cover shell 1 is composed of a protective shell 10 and an observation shell 11. The protective shell 10 is located around the side wall and the bottom, and the observation shell 11 is located at the upper end of the protective shell 10, and the observation shell 11 is made of transparent material. Its main purpose is to facilitate personnel to quickly observe the entire process of the battery during the charge and discharge performance test at any time.

[0049] At the same time, it is also convenient for placing and taking the batteries to be tested.

[0050] Reference Figure 4 , Figure 5 and Figure 6 As shown, after the battery is placed on the upper end of the placement platform 2, the entire battery is still in a movable state. If it explodes, it will cause the battery to move violently, thereby affecting the battery to cause secondary explosion and more dangerous situations.

[0051] Secondly, the battery is directly placed on the placement platform 2. When the battery is tested for its charge and discharge performance, the battery will be displaced, which may cause the battery to easily fall off from the power load cabinet 12. In summary, the present application proposes a clamping component 5; specifically, the placement platform 2 is also provided with a clamping component 5 for clamping and fixing the battery. The clamping component 5 includes a No. 1 clamping plate 50, a No. 2 clamping plate 51 and a reset spring 52. The No. 1 clamping plate 50 and the No. 2 clamping plate 51 are installed in the middle of the placement platform 2 in a relative sliding manner. A clamping groove for the No. 1 clamping plate 50 and the No. 2 clamping plate 51 to slide is provided on the placement platform 2. The reset spring 52 is provided between the No. 1 clamping plate 50 and the No. 2 clamping plate 51, one end of which is fixedly connected to the No. 1 clamping plate 50 and the other end is connected to the No. 2 clamping plate 51.

[0052] When placing the battery, the No. 1 clamp 50 or the No. 2 clamp 51 can be moved to increase the distance between the No. 1 clamp 50 and the No. 2 clamp 51 to ensure the placement of the battery. The battery is then placed on the placement platform 2, and the battery plug port is ensured to be in the same position as the power wire 13 on the power load cabinet 12. The No. 1 clamp 50 or the No. 2 clamp 51 is then released, and under the elastic force of the reset spring 52, the No. 1 clamp 50 and the No. 2 clamp 51 clamp the side wall of the battery.

[0053] It should be noted that the contact parts between the first and second clamping plates 50 and 51 and the side walls of the battery are made of insulating and heat-resistant rubber material, the main purpose of which is to increase the friction between the first and second clamping plates 50 and 51 and the side walls of the battery to ensure the stability of battery clamping.

[0054] See also Figure 6 and Figure 7 As shown, in order to realize the synchronous relative movement of the No. 1 splint 50 and the No. 2 splint 51, the present invention further proposes a synchronous telescopic component 6, and a synchronous telescopic component 6 is arranged between the No. 1 splint 50 and the No. 2 splint 51. The synchronous telescopic component 6 includes a synchronous gear 60 and a synchronous rack 61. The synchronous gear 60 is fixedly mounted on the placement platform 2, and the synchronous gear 60 is located in the clamping groove. The synchronous rack 61 is fixedly connected to the horizontal ends of the No. 1 splint 50 and the No. 2 splint 51, respectively, and the No. 1 splint 50, the No. 2 splint 51 and the synchronous gear 60 are meshed with each other.

[0055] When the operator pulls the No. 1 clamp 50, the synchronous rack 61 on the No. 1 clamp 50 drives the meshing synchronous gear 60 to rotate. At this time, the synchronous rack 61 on the No. 2 clamp 51 is also meshed with the synchronous gear 60. Therefore, when the synchronous gear 60 rotates, the No. 2 clamp 51 will be driven to move synchronously through the synchronous rack 61 on the No. 2 clamp 51. However, the No. 1 clamp 50 and the No. 2 clamp 51 are always in a state of relative motion. When the No. 1 clamp 50 moves outward, the No. 2 clamp 51 also moves outward synchronously by the same distance. Conversely, the two are close to each other.

[0056] Reference Figure 8 and Fig. 9 As shown, that is, a schematic diagram of the structure for real-time monitoring of battery temperature in this embodiment; specifically, a temperature rise monitor 3 is arranged inside the protective cover shell 1, and the temperature rise monitor 3 includes an aluminum foil strip 30, a temperature control monitoring piece 31 and a temperature control digital display device 32. A plurality of aluminum foil strips 30 are arranged at the bottom of the placement platform 2 in an end-to-end connection manner, and the plurality of aluminum foil strips 30 are distributed in a pentagonal shape, and a plurality of temperature control monitoring pieces 31 are arranged at the upper end of the placement platform 2 in a five-point plum blossom arrangement manner and are connected to the five corners of the aluminum foil strips 30; another temperature control monitoring piece 31 is arranged in the middle of the upper end of the placement platform 2, and the temperature control digital display device 32 is connected to the upper end of the protective cover shell 1, and the temperature control digital display device 32 is connected to a plurality of temperature control monitoring pieces 31 through wires.

[0057] The power load cabinet 12 starts to start and tests the battery charging and discharging performance.

[0058] It should be noted that five temperature control monitoring pieces 31 are distributed on the placement platform 2 in a plum blossom pattern, and a temperature control monitoring piece 31 is also provided in the middle of the placement platform 2. A total of six temperature control monitoring pieces 31 are used to monitor the temperature at the bottom of the battery in real time, and the monitored temperature is displayed in real time in digital form through the temperature control digital display device 32.

[0059] It can not only monitor the temperature of various parts of the battery, observe the temperature of various parts of the battery, and improve the accuracy of battery temperature monitoring, but also can display the monitored battery temperature in digital form, which is convenient for recording.

[0060] A plurality of temperature control detection sheets are connected in series via aluminum foil strips 30 connected end to end. Since the aluminum foil strips 30 have good thermal conductivity, it is ensured that the temperature of the battery can be monitored by the plurality of temperature control monitoring sheets 31 .

[0061] Reference Fig.10As shown, that is, a structural schematic diagram of detecting micro-bulging of the battery in this embodiment; specifically, the protective cover shell 1 is also provided with a micro-deformation detection component 4 for accurately detecting battery bulging, the micro-deformation detection component 4 includes a micro-deformation detection horizontal plate 40, a fixed horizontal plate 41, a micro-spring 42 and a detection scale line 43, the side wall of the protective cover shell 1 is symmetrically provided with vertical slide grooves, the vertical slide grooves on the protective cover shell 1 are symmetrically installed with micro-springs 42, the micro-deformation detection horizontal plate 40 is slid up and down inside the protective cover shell 1, and the micro-deformation detection horizontal plate 40 is against the battery, the fixed horizontal plate 41 is fixedly connected to the two ends of the micro-deformation detection horizontal plate 40 in the length direction, and the two fixed horizontal plates 41 are slid up and down in the vertical slide groove of the protective cover shell 1, and the fixed horizontal plate 41 is connected to the micro-spring 42.

[0062] When the battery is undergoing charge and discharge testing, the following situations may occur: first, the battery is intact; second, the battery temperature becomes abnormal, causing it to be too high and causing a slight bulge in the battery, but this is not visible to the human eye; finally, the battery may explode.

[0063] It should be noted that the fixed horizontal plate 41 and the micro-deformation detection horizontal plate 40 are relatively thin and have high hardness, and cannot bend or deform. When installing the battery, it is necessary to lift the micro-deformation detection horizontal plate 40. At this time, do not directly touch the micro-deformation detection horizontal plate 40. The main purpose of controlling the position movement of the micro-deformation detection horizontal plate 41 is to avoid deformation of the micro-deformation detection horizontal plate 40 that is in contact with the battery.

[0064] When the battery has a slight bulge, it is not visible to the naked eye. Therefore, after the battery is installed on the upper end of the placement platform 2, the micro-deformation detection horizontal plate 40 is pressed against the upper end of the battery, and under the action of the downward pressure of the micro-spring 42, the micro-deformation detection horizontal plate 40 is ensured to be tightly pressed against the upper end of the battery. At this time, the position of the fixed horizontal plate 41 at the side end of the micro-deformation detection horizontal plate 40 is observed and recorded. At this time, the position of the detection scale line 43 is the height of the micro-deformation detection horizontal plate 40 when the battery has no bulge. When the battery has a slight bulge, the position corresponding to the micro-deformation detection horizontal plate 40 on the battery will cause the micro-deformation detection horizontal plate 40 on the battery to tilt up. At this time, the corresponding height of the micro-deformation detection horizontal plate 40 will also change. By observing the scale marks on the detection scale line 43, it can be determined whether the battery is deformed or bulged.

[0065] Reference Fig.11As shown, that is, a schematic diagram of the protection structure against battery explosion in this embodiment; specifically, a plurality of pressure relief vent holes 7 for preventing battery explosion are provided at equal intervals on the protection shell 10, and an exhaust tension spring 71 is installed in the pressure relief vent hole 7 through a bracket, and a conical sealing block 72 is fixedly connected to one end of the exhaust tension spring 71 away from the bracket, and the conical sealing block 72 is pressed against the pressure relief vent hole 7 through an inclined surface.

[0066] When the temperature control digital display device 32 detects that the temperature of the battery continues to rise during the charge and discharge performance test, it can be determined that the battery is at risk of explosion. Therefore, the temperature control digital display device 32 immediately alarms to prompt the surrounding personnel to quickly move away from the protective cover shell 1. At the same time, the protective cover shell 1 covers the battery at all times to prevent the battery from splashing after the explosion. At the same time, after the battery explodes, the pressure after the explosion can be released through the pressure relief vent 7 to prevent the protective cover shell 1 in a sealed state from secondary breakage.

[0067] Under normal conditions, the pressure relief vent hole 7 is sealed by a conical sealing block 72 to prevent dust from entering the entire protective cover shell 1 through the pressure relief vent hole 7, which would affect the connection between the battery plug interface and the power-carrying wire 13 and cause poor contact due to dust. When the battery explodes, the strong air pressure will instantly impact the conical sealing block 72, causing the exhaust spring to be stretched and deformed, and the conical sealing block 72 will be away from the pressure relief vent hole 7 on the protective cover shell 1, ensuring that the air pressure generated by the battery explosion can be dissipated in time.

[0068] During operation: The first step is to open the closed door 81 on the protective shell 10 through the movable latch 82 when the battery needs to be tested, then place the battery on the placement platform 2 in the protective cover 1, and connect the battery's power plug to the power wire 13 of the power load cabinet 12.

[0069] Step 2: After the battery is placed on the placement platform 2, the No. 1 clamp 50 or the No. 2 clamp 51 can be moved to increase the distance between the No. 1 clamp 50 and the No. 2 clamp 51 to ensure the placement of the battery. Then the battery is placed on the placement platform 2, and the battery plug port is ensured to be consistent with the position of the power wire 13 on the power load cabinet 12. Then, the No. 1 clamp 50 or the No. 2 clamp 51 is released, and under the elastic force of the reset spring 52, the No. 1 clamp 50 and the No. 2 clamp 51 clamp the side wall of the battery.

[0070] Step 3: After the battery is fixed, the power load cabinet 12 starts to start and the charging and discharging performance of the battery is tested. During this process, a total of six temperature control monitoring pieces 31 are used to monitor the temperature at the bottom of the battery in real time, and the monitored temperature is displayed in real time in digital form through the temperature control digital display device 32.

[0071] Step 4: When a slight bulge occurs during battery detection, it cannot be observed by the naked eye. Therefore, after the battery is installed on the upper end of the placement platform 2, the micro-deformation detection horizontal plate 40 is pressed against the upper end of the battery, and under the action of the downward pressure of the micro-spring 42, the micro-deformation detection horizontal plate 40 is ensured to be tightly pressed against the upper end of the battery. At this time, the position of the fixed horizontal plate 41 at the side end of the micro-deformation detection horizontal plate 40 is observed on the detection scale line 43, and it is recorded. At this time, the position of the detection scale line 43 is the height of the micro-deformation detection horizontal plate 40 when the battery is not bulging. When the battery is slightly bulging, the corresponding position of the micro-deformation detection horizontal plate 40 on the battery will cause the micro-deformation detection horizontal plate 40 on the battery to tilt up. At this time, the corresponding height of the micro-deformation detection horizontal plate 40 will also change. By observing the scale markings on the detection scale line 43, it can be determined whether the battery is deformed or bulging.

[0072] Step 5: When the temperature control digital display device 32 detects that the temperature of the battery continues to rise during the charge and discharge performance test, it can be determined that the battery is at risk of explosion. Therefore, the temperature control digital display device 32 immediately alarms to prompt the surrounding personnel to quickly move away from the protective cover shell 1. At the same time, the protective cover shell 1 covers the battery at all times to prevent the battery from splashing after the explosion. At the same time, after the battery explodes, the pressure after the explosion can be released through the pressure relief vent 7 to prevent the protective cover shell 1 in a sealed state from secondary breakage.

[0073] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0074] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A battery overcharge and forced discharge monitoring device, Features: include A protective cover shell (1) is used to place the battery and also to avoid the risk of battery explosion. A placement platform (2) is fixedly provided on the lower inner wall of the protective cover shell (1); A temperature rise monitor (3) is arranged inside the protective cover shell (1), and the temperature rise monitor (3) comprises an aluminum foil strip (30), a temperature control monitoring sheet (31) and a temperature control digital display device (32). A plurality of the aluminum foil strips (30) are arranged at the bottom of the placement platform (2) in an end-to-end connection manner, and the plurality of aluminum foil strips (30) are distributed in a pentagonal shape. A plurality of the temperature control monitoring sheets (31) are arranged at the upper end of the placement platform (2) in a five-point plum blossom arrangement manner and are connected to the five corners of the aluminum foil strips (30); another temperature control monitoring sheet (31) is arranged at the middle of the upper end of the placement platform (2), and the temperature control digital display device (32) is connected to the upper end of the protective cover shell (1), and the temperature control digital display device (32) is connected to the plurality of temperature control monitoring sheets (31) via wires.

2. A battery overcharge and forced discharge monitoring device according to claim 1, Features: The protective cover shell (1) comprises a protective shell (10) and an observation shell (11); the protective cover shell (1) is arranged in the form of a five-sided protective shell (10), and the upper end of the protective shell (10) is open; the observation shell (11) is mounted on the protective shell (10) in a hinged manner, and the observation shell (11) is controlled to open and close.

3. A battery overcharge and forced discharge monitoring device according to claim 1, Features: A power supply load cabinet (12) is also provided on one side of the protective cover shell (1), and a power supply wire (13) connected to a battery is provided on the power supply load cabinet (12), and one end of the power supply wire (13) away from the power supply load cabinet (12) slides through the protective shell (10) and extends in the direction of the battery plug-in interface.

4. A battery overcharge and forced discharge monitoring device according to claim 1, Features: The protective cover shell (1) is also provided with a micro-deformation detection component (4) for accurately detecting battery bulging. The micro-deformation detection component (4) comprises a micro-deformation detection horizontal plate (40), a fixed horizontal plate (41), a micro-spring (42) and a detection scale line (43). The side wall of the protective cover shell (1) is symmetrically provided with vertical slide grooves. The micro-springs (42) are symmetrically installed in the vertical slide grooves on the protective cover shell (1). The micro-deformation detection horizontal plate (40) is slidably arranged inside the protective cover shell (1) and the micro-deformation detection horizontal plate (40) is abutted against the battery. The fixed horizontal plate (41) is fixedly connected to the two ends of the micro-deformation detection horizontal plate (40) in the length direction, and the two fixed horizontal plates (41) are slidably installed in the vertical slide grooves of the protective cover shell (1). The fixed horizontal plate (41) is connected to the micro-spring (42).

5. A battery overcharge and forced discharge monitoring device according to claim 1, Features: The placement platform (2) is also provided with a clamping component (5) for clamping and fixing the battery. The clamping component (5) includes a first clamping plate (50), a second clamping plate (51) and a reset spring (52). The first clamping plate (50) and the second clamping plate (51) are installed in the middle of the placement platform (2) in a relative sliding manner. The placement platform (2) is provided with a clamping groove for the first clamping plate (50) and the second clamping plate (51) to slide. The reset spring (52) is arranged between the first clamping plate (50) and the second clamping plate (51), with one end fixedly connected to the first clamping plate (50) and the other end connected to the second clamping plate (51).

6. A battery overcharge and forced discharge monitoring device according to claim 5, Features: A synchronous telescopic component (6) is arranged between the No. 1 clamping plate (50) and the No. 2 clamping plate (51), and the synchronous telescopic component (6) includes a synchronous gear (60) and a synchronous rack (61). The synchronous gear (60) is fixedly installed on the placement platform (2), and the synchronous gear (60) is located in the clamping slide groove. The synchronous rack (61) is fixedly connected to the horizontal ends of the No. 1 clamping plate (50) and the No. 2 clamping plate (51), respectively, and the No. 1 clamping plate (50), the No. 2 clamping plate (51) and the synchronous gear (60) are meshed with each other.

7. A battery overcharge and forced discharge monitoring device according to claim 2, Features: The protective shell (10) is provided with a plurality of pressure relief holes (7) at equal intervals for preventing battery explosion. An exhaust tension spring (71) is installed in the pressure relief hole (7) via a bracket. An end of the exhaust tension spring (71) away from the bracket is fixedly connected to a conical sealing block (72). The conical sealing block (72) abuts against the pressure relief hole (7) via an inclined surface.

8. A battery overcharge and forced discharge monitoring device according to claim 1, Features: The protective shell (10) of the protective cover shell (1) is provided with an installation slot (80) for placing a battery, a closing door (81) is hinged in the installation slot (80), and a movable latch (82) is provided between the closing door (81) and the protective shell (10).

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