A discharge detection device based on a lithium battery

Abstract

The present invention relates to a discharge detection device, and particularly to a discharge detection device based on a lithium battery. The object of the present invention is to provide a discharge detection device based on a lithium battery that can dry the air around the lithium battery. The present invention provides such a discharge detection device based on a lithium battery, which includes a housing, a battery discharge detector, a support rod, a detection rod, etc. A battery discharge detector for discharging and detecting the lithium battery is connected to the rear side of the top of the housing. A support rod is slidably provided on the upper side of the rear part of the housing. The support rod is located below the battery discharge detector. Detection rods are connected to both the left and right sides of the bottom of the support rod. When the detection rod of the present invention is used to detect the discharge of the lithium battery, the fan can blow air forward to cool the lithium battery, and the desiccant can absorb the moisture in the air, thereby drying the air and preventing the lithium battery from exploding due to the surrounding humid air.

Description

Technical Field

[0001] The present invention relates to a discharge detection device, and in particular to a discharge detection device based on a lithium battery. Background Art

[0002] A lithium battery is a type of battery with a lithium metal or lithium alloy as the positive and negative electrode materials and using a non-aqueous electrolyte solution. After the lithium battery is produced, it needs to be sampled and detected manually, and the product is determined to be qualified through discharge detection.

[0003] Patent application CN215494019U, publication date 20220111, discloses a discharge detection device for a lithium battery, including a box body. A detection host is arranged below the box body, a support column is arranged in the middle of the box body, a smoke alarm is arranged in the middle of the support column, a first electric push rod is arranged below the partition board, the lower end of the first electric push rod is connected with an upper pressing plate, a fire extinguisher is arranged at the bottom of the box body, a pipeline is connected above the fire extinguisher, and the other end of the pipeline is connected with a nozzle; the present invention is provided with a smoke alarm, a fire extinguisher and a first electric push rod. The smoke alarm and the first electric push rod are electrically connected to the detection host. The smoke alarm can sense a fire, transmit a signal to the detection host, start the first electric push rod, press the handle with the upper pressing plate, and spray dry powder from the nozzle to extinguish the fire in time, which can effectively improve the safety of the device and reduce potential safety hazards. Although the above patent can clamp the lithium battery, it cannot dry the air around the lithium battery. During the detection process of the lithium battery, it is very likely to explode due to humid air, and the safety is relatively low.

[0004] In summary, there is an urgent need for a discharge detection device based on a lithium battery that can dry the air around the lithium battery to solve the above problems. Summary of the Invention

[0005] In order to overcome the disadvantages that existing discharge detection devices generally cannot dry the air around the lithium battery, and during the detection process of the lithium battery, it is very likely to explode due to humid air and the safety is relatively low, the purpose of the present invention is to provide a discharge detection device based on a lithium battery that can dry the air around the lithium battery.

[0006] The present invention is achieved through the following technical means:

[0007] A discharge detection device based on a lithium battery, comprising a housing, a battery discharge detector, a support rod, a detection rod, a placement plate, a moving component, a fixing component, a heat dissipation component and a moisture absorption component. At the rear side of the top of the housing is connected a battery discharge detector for discharging and detecting the lithium battery. At the upper side of the rear part of the housing is slidably provided a support rod, which is located below the battery discharge detector. On the left and right sides of the bottom of the support rod are both connected with detection rods, and the detection rods are electrically connected to the battery discharge detector. At the front side of the lower part of the housing is slidably provided a placement plate for placing the lithium battery. At the lower part of the housing is provided a moving component for driving the lithium battery to move back and forth, and on the moving component is provided a fixing component for clamping the lithium battery. At the lower side of the rear part of the housing is provided a heat dissipation component for cooling the lithium battery, and on the heat dissipation component is provided a moisture absorption component for absorbing moisture in the air.

[0008] Furthermore, the moving component includes a motor, a lead screw, a first spring and a first connecting rod. At the rear side of the lower part of the housing is connected a motor, and at the front end of the output shaft of the motor is connected a lead screw. The front part of the lead screw is threadedly connected to the lower part of the placement plate. Between the left and right sides of the bottom of the support rod and the housing are both connected with first springs, and on the left and right sides of the bottom of the support rod are both connected with first connecting rods. The first connecting rods are located outside the detection rods, and when the placement plate moves backward, it will contact the first connecting rods.

[0009] Furthermore, the fixing component includes a first guide rod, a fixing block, an anti-slip pad, a second connecting rod and a second spring. On the left and right sides of the upper part of the placement plate are both connected with first guide rods, and on the outer sides of the first guide rods are slidably connected with fixing blocks. On the upper inner sides of the fixing blocks are both connected with anti-slip pads, and at the bottoms of the fixing blocks are both connected with second connecting rods. On the first guide rods are both wound with second springs, and the two ends of the second springs are respectively connected to the placement plate and the fixing blocks. On the left and right sides of the lower part of the housing are both provided with chutes, and the second connecting rods on the left and right sides respectively slide in the chutes on the left and right sides.

[0010] Furthermore, the heat dissipation component includes a support frame, a first filter screen, a fan and a second filter screen. At the lower side of the rear part of the housing is connected a support frame. On the left and right sides of the front side inside the support frame are both connected with fans. On the left and right sides of the front side inside the support frame are both connected with first filter screens, and the first filter screens are located in front of the fans. On the left and right sides of the front side inside the support frame are both connected with second filter screens, and the second filter screens are located behind the fans.

[0011] Furthermore, the moisture absorption component includes a placement frame, a desiccant, a clamping block, a pull rod and a third spring. Inside the rear part of the support frame is placed a placement frame, and in the placement frame are placed desiccants at intervals. On the left and right sides of the rear part of the support frame are slidably connected with pull rods, and on the inner sides of the pull rods are both connected with clamping blocks, and the clamping blocks clamp the placement frame. On the pull rods are both wound with third springs, and the two ends of the third springs are respectively connected to the support frame and the clamping blocks.

[0012] Further, it also includes a blocking component for blocking the front side of the lithium battery. The blocking component includes a second guide rod, a third connecting rod, a fourth spring, a baffle, a groove cylinder and a contact rod. The lower rear sides of the left and right sides of the housing are both connected with a second guide rod. The inner sides of the second guide rods are both slidably connected with a third connecting rod. The third connecting rods are both slidably connected with the housing. When the second connecting rod moves backward, it will contact the third connecting rod. The fourth springs are wound around the second guide rods. The two ends of the fourth spring are respectively connected with the second guide rod and the third connecting rod. The upper side of the rear part of the housing is rotatably connected with a baffle. The left and right sides of the lower part of the baffle are both connected with a groove cylinder. The upper parts of the front sides of the third connecting rods are both connected with a contact rod. The front parts of the contact rods on the left and right sides slide on the groove cylinders on the left and right sides respectively.

[0013] Further, it also includes an alarm component for prompting. The alarm component includes a smoke alarm, a warning light and screws. The middle of the upper side of the rear part of the housing is connected with a smoke alarm. The warning light is installed on the rear side of the top of the housing through two screws. The warning light is located behind the battery discharge detector. The warning light is electrically connected with the smoke alarm.

[0014] Further, the placing frame is provided with ventilation holes at intervals.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. By using the motor as the driving force, the present invention can drive the placing plate to move backward, thereby driving the lithium battery to move backward. At the same time, it can drive the fixing block to move inward to clamp the lithium battery, and can drive the detection rod to move downward to detect the discharge of the lithium battery. The operation is simple and the degree of automation is relatively high.

[0017] 2. When the detection rod detects the discharge of the lithium battery, the fan can blow air forward to cool the lithium battery, and the desiccant can absorb the moisture in the air, thereby drying the air and preventing the lithium battery from exploding due to the surrounding humid air.

[0018] 3. When the baffle of the present invention rotates downward by 180 degrees, it can block the front side of the lithium battery, thereby avoiding people from being injured when the lithium battery explodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 It is an installation schematic diagram of the moving component of the present invention.

[0021] Figure 3 It is an installation schematic diagram of the fixing component of the present invention.

[0022] Figure 4Schematic partial three-dimensional structure diagram of the fixing component of the present invention.

[0023] Figure 5 Installation schematic diagram of the heat dissipation component of the present invention.

[0024] Figure 6 Schematic partial three-dimensional structure diagram of the heat dissipation component of the present invention.

[0025] Figure 7 Installation schematic diagram of the moisture absorption component of the present invention.

[0026] Figure 8 Schematic diagram of the partially sectional structure of the moisture absorption component of the present invention.

[0027] Figure 9 Installation schematic diagram of the blocking component of the present invention.

[0028] Figure 10 Schematic partial three-dimensional structure diagram of the blocking component of the present invention.

[0029] Figure 11 Installation schematic diagram of the alarm component of the present invention.

[0030] In the above drawings: 1: housing, 2: battery discharge detector, 3: support rod, 4: detection rod, 5: placement plate, 6: moving component, 61: motor, 62: lead screw, 63: first spring, 64: first connecting rod, 7: fixing component, 71: first guide rod, 72: fixing block, 73: anti-slip pad, 74: second connecting rod, 75: second spring, 76: chute, 8: heat dissipation component, 81: support frame, 82: first filter screen, 83: fan, 84: second filter screen, 9: moisture absorption component, 91: placement frame, 92: desiccant, 93: clamping block, 94: pull rod, 95: third spring, 10: blocking component, 101: second guide rod, 102: third connecting rod, 103: fourth spring, 104: baffle, 105: groove cylinder, 106: contact rod, 11: alarm component, 111: smoke alarm, 112: warning light, 113: screw. Detailed implementation

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1

[0033] A discharge detection device based on a lithium battery, refer to Figures 1 - 8, including a housing 1, a battery discharge detector 2, a support rod 3, a detection rod 4, a placement plate 5, a moving component 6, a fixing component 7, a heat dissipation component 8, and a moisture absorption component 9. A battery discharge detector 2 is connected to the rear side of the top of the housing 1. A support rod 3 is slidably provided on the upper side of the rear part of the housing 1. The support rod 3 is located below the battery discharge detector 2. Both the left and right sides of the bottom of the support rod 3 are connected to a detection rod 4. The detection rods 4 are electrically connected to the battery discharge detector 2. A placement plate 5 is slidably provided on the front side of the lower part of the housing 1. People can place a lithium battery on the placement plate 5. When the placement plate 5 moves backward, it can drive the lithium battery to move backward, and at the same time, it can drive the detection rod 4 to move downward to contact the lithium battery, so that the battery discharge detector 2 can detect the discharge of the lithium battery. A moving component 6 is provided at the lower part of the housing 1, and a fixing component 7 is provided on the moving component 6. A heat dissipation component 8 is provided at the lower side of the rear part of the housing 1, and a moisture absorption component 9 is provided on the heat dissipation component 8.

[0034] Refer to Figure 1 and Figure 2 , the moving component 6 includes a motor 61, a lead screw 62, a first spring 63, and a first connecting rod 64. The motor 61 is bolted to the rear side of the lower part of the housing 1. The front end of the output shaft of the motor 61 is connected to the lead screw 62. The front part of the lead screw 62 is threadedly connected to the lower part of the placement plate 5. Starting the motor 61 can drive the lead screw 62 to rotate forward and backward, so as to drive the placement plate 5 to move back and forth. A first spring 63 is connected between both the left and right sides of the bottom of the support rod 3 and the housing 1. A first connecting rod 64 is welded to both the left and right sides of the bottom of the support rod 3. The first connecting rod 64 is located outside the detection rod 4. When the placement plate 5 moves backward, it will contact the first connecting rod 64.

[0035] Refer to Figure 1 , Figure 3 and Figure 4 , the fixing component 7 includes a first guide rod 71, a fixing block 72, an anti-slip pad 73, a second connecting rod 74, and a second spring 75. First guide rods 71 are connected to both the left and right sides of the upper part of the placement plate 5. Fixing blocks 72 are slidably connected to the outside of the first guide rods 71. Anti-slip pads 73 are connected to the upper parts of the inner sides of the fixing blocks 72. When the fixing blocks 72 move inward, they can clamp the lithium battery. Second connecting rods 74 are welded to the bottoms of the fixing blocks 72. Second springs 75 are wound around the first guide rods 71. The two ends of the second spring 75 are respectively connected to the placement plate 5 and the fixing block 72. Chutes 76 are opened on both the left and right sides of the lower part of the housing 1. The second connecting rods 74 on the left and right sides slide in the chutes 76 on the left and right sides respectively.

[0036] Refer to Figure 1 , Figure 2 , Figure 5 and Figure 6, the heat dissipation component 8 includes a support frame 81, a first filter screen 82, a fan 83 and a second filter screen 84. The support frame 81 is welded to the lower side of the rear part of the housing 1. On the left and right sides of the front side inside the support frame 81, fans 83 are connected. Starting the fans 83 can blow air forward to cool the lithium battery. On the left and right sides of the front side inside the support frame 81, first filter screens 82 are connected. The first filter screens 82 are located in front of the fans 83. On the left and right sides of the front side inside the support frame 81, second filter screens 84 are connected. The second filter screens 84 are located behind the fans 83.

[0037] Refer to Figure 2 , Figure 7 and Figure 8 , the moisture absorption component 9 includes a placement frame 91, a desiccant 92, a clamping block 93, a pull rod 94 and a third spring 95. The placement frame 91 is placed at the rear side inside the support frame 81. Vent holes are spaced on the placement frame 91. Desiccants 92 are spaced and placed inside the placement frame 91. The desiccants 92 can absorb moisture in the air, thereby drying the air and preventing the lithium battery from exploding due to the surrounding humid air. On the left and right sides of the rear part of the support frame 81, pull rods 94 are slidably connected. Clamping blocks 93 are welded to the inner sides of the pull rods 94. The clamping blocks 93 hold the placement frame 91. Third springs 95 are wound around the pull rods 94. The two ends of the third springs 95 are respectively connected to the support frame 81 and the clamping block 93.

[0038] When people need to use the device, first place the lithium battery on the top of the placement plate 5 so that the lithium battery is located between the two fixing blocks 72. Then start the motor 61 and control the output shaft of the motor 61 to rotate forward, driving the lead screw 62 to rotate forward. The lead screw 62 drives the placement plate 5 to move backward, thereby driving the lithium battery to move backward. At the same time, the placement plate 5 drives the fixing block 72 and the second connecting rod 74 to move backward. Under the guiding action of the chute 76, the housing 1 will squeeze the second connecting rod 74 to move inward, thereby driving the fixing block 72 and the anti-slip pad 73 to move inward, and the second spring 75 is compressed, so that the fixing block 72 can clamp the lithium battery, and the anti-slip pad 73 can prevent the lithium battery from being damaged by the fixing block 72. When the placement plate 5 contacts the first connecting rod 64, it will squeeze the first connecting rod 64 to move downward, thereby driving the support rod 3 and the detection rod 4 to move downward, and the first spring 63 is compressed, so that the two detection rods 4 are respectively in contact with the positive and negative electrodes of the lithium battery. At this time, turn off the motor 61, and then start the fan 83 and the battery discharge detector 2. The battery discharge detector 2 can perform a discharge test on the lithium battery through the detection rod 4 and display the data. People can know whether the lithium battery is qualified by watching the data. At the same time, the fan 83 can blow air forward to cool the lithium battery. The first filter screen 82 and the second filter screen 84 can filter the air to prevent a large amount of dust from sticking to the fan 83, and the desiccant 92 can absorb the moisture in the air, thereby drying the air and preventing the lithium battery from exploding due to the surrounding humid air. After the detection is completed, turn off the fan 83 and the battery discharge detector 2, and then start the motor 61. Control the output shaft of the motor 61 to reverse, driving the lead screw 62 to reverse. The lead screw 62 drives the placement plate 5 to move forward to reset, thereby driving the detected lithium battery to move forward. At the same time, the placement plate 5 drives the fixing block 72 and the second connecting rod 74 to move forward to reset. When the housing 1 releases the second connecting rod 74, the second spring 75 returns to its original state, driving the fixing block 72, the anti-slip pad 73 and the second connecting rod 74 to move outward to reset, so that the fixing block 72 releases the detected lithium battery. Then turn off the motor 61, and manually take away the detected lithium battery. Repeat the above operations to perform a discharge test on the lithium battery again. When the desiccant 92 absorbs too much moisture, people can replace the desiccant 92. First, pull the pull rod 94 outward, driving the clamping block 93 to move outward, and the third spring 95 is compressed, so that the clamping block 93 releases the placement frame 91. Then the placement frame 91 can be pulled backward, driving the desiccant 92 to move backward. Then release the pull rod 94, and the third spring 95 returns to its original state, driving the pull rod 94 and the clamping block 93 to move inward to reset. Then the desiccant 92 can be replaced. After replacement, pull the pull rod 94 outward again, driving the clamping block 93 to move outward, and the third spring 95 is compressed. Then place the placement frame 91 back in place, driving the desiccant 92 to reset. Then release the pull rod 94, and the third spring 95 returns to its original state, driving the pull rod 94 and the clamping block 93 to move inward to reset.The clamping block 93 is made to re-clamp the placement frame 91.

[0039] Embodiment 2

[0040] On the basis of Embodiment 1, with reference to Figure 1 、 Figure 9 and Figure 10 it further includes a blocking component 10. The blocking component 10 includes a second guide rod 101, a third connecting rod 102, a fourth spring 103, a baffle 104, a grooved drum 105 and a contact rod 106. The lower rear sides of the left and right sides of the housing 1 are both welded with a second guide rod 101. The inner sides of the second guide rods 101 are both slidably connected with a third connecting rod 102. The third connecting rods 102 are both slidably connected with the housing 1. The second connecting rod 74 will contact the third connecting rod 102 when moving backward. The fourth spring 103 is wound around the second guide rod 101. The two ends of the fourth spring 103 are respectively connected with the second guide rod 101 and the third connecting rod 102. The upper side of the rear part of the housing 1 is rotatably connected with a baffle 104. The baffle 104 can block the front side of the lithium battery when rotating downward by 180 degrees. Thus, when the lithium battery explodes, people can be prevented from being injured. The left and right sides of the lower part of the baffle 104 are both connected with a grooved drum 105. The upper parts of the front sides of the third connecting rods 102 are both connected with a contact rod 106. The front parts of the contact rods 106 on the left and right sides slide on the grooved drums 105 on the left and right sides respectively.

[0041] When the second connecting rod 74 moves backward, it will contact the third connecting rod 102, thereby squeezing the third connecting rod 102 to move outward. The fourth spring 103 is compressed. The third connecting rod 102 drives the contact rod 106 to move outward. The contact rod 106 drives the grooved drum 105 to rotate 180 degrees, thereby driving the baffle 104 to rotate downward by 180 degrees to block the front side of the lithium battery. Thus, when the lithium battery explodes, people can be prevented from being injured. When the second connecting rod 74 moves forward to reset, it will separate from the third connecting rod 102. The fourth spring 103 returns to its original state, driving the third connecting rod 102 and the contact rod 106 to move inward to reset. The contact rod 106 drives the grooved drum 105 to reverse 180 degrees, thereby driving the baffle 104 to rotate upward by 180 degrees and no longer blocking the front side of the lithium battery.

[0042] With reference to Figure 1 and Figure 11 it further includes an alarm component 11. The alarm component 11 includes a smoke alarm 111, a warning light 112 and screws 113. The middle of the upper side of the rear part of the housing 1 is connected with a smoke alarm 111. The warning light 112 is installed on the rear side of the top of the housing 1 through two screws 113. The warning light 112 is located behind the battery discharge detector 2. The warning light 112 is electrically connected with the smoke alarm 111. When the lithium battery explodes, the smoke alarm 111 will detect the smoke. At this time, the smoke alarm 111 will control the warning light 112 to light up to play a warning role.

[0043] When people need to use the device, they can activate the smoke alarm 111. When the lithium battery explodes, the smoke alarm 111 will detect the smoke. At this time, the smoke alarm 111 will control the warning light 112 to turn on, thus playing a reminder role. When the smoke alarm 111 fails to detect smoke, the smoke alarm 111 will control the warning light 112 to turn off. When people do not need to use the device, they can just turn off the smoke alarm 111.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A discharge detection device based on a lithium battery, comprising a housing (1), a battery discharge detector (2), a support rod (3), a detection rod (4) and a placement plate (5). A battery discharge detector (2) for discharging and detecting the lithium battery is connected to the rear side of the top of the housing (1). A support rod (3) is slidably provided on the upper side of the rear part of the housing (1). The support rod (3) is located below the battery discharge detector (2). Detection rods (4) are connected to both the left and right sides of the bottom of the support rod (3). The detection rods (4) are electrically connected to the battery discharge detector (2). A placement plate (5) for placing the lithium battery is slidably provided on the front side of the lower part of the housing (1). It is characterized in that, It also includes a moving component (6), a fixing component (7), a heat dissipation component (8) and a moisture absorption component (9). A moving component (6) for driving the lithium battery to move back and forth is provided at the lower part of the housing (1). A fixing component (7) for clamping the lithium battery is provided on the moving component (6). A heat dissipation component (8) for cooling the lithium battery is provided at the lower side of the rear part of the housing (1). A moisture absorption component (9) for absorbing moisture in the air is provided on the heat dissipation component (8). The moving component (6) includes a motor (61), a lead screw (62), a first spring (63) and a first connecting rod (64). The motor (61) is connected to the rear side of the lower part of the housing (1). The front end of the output shaft of the motor (61) is connected to the lead screw (62). The front part of the lead screw (62) is in threaded connection with the lower part of the placement plate (5). First springs (63) are connected between the left and right sides of the bottom of the support rod (3) and the housing (1). First connecting rods (64) are connected to the left and right sides of the bottom of the support rod (3). The first connecting rods (64) are located outside the detection rod (4). When the placement plate (5) moves backward, it will contact the first connecting rods (64). The fixing component (7) includes a first guide rod (71), a fixing block (72), an anti-slip pad (73), a second connecting rod (74) and a second spring (75). First guide rods (71) are connected to the left and right sides of the upper part of the placement plate (5). Fixing blocks (72) are slidably connected to the outside of the first guide rods (71). Anti-slip pads (73) are connected to the upper parts of the inner sides of the fixing blocks (72). Second connecting rods (74) are connected to the bottoms of the fixing blocks (72). Second springs (75) are wound around the first guide rods (71). The two ends of the second springs (75) are respectively connected to the placement plate (5) and the fixing blocks (72). Chutes (76) are opened on the left and right sides of the lower part of the housing (1). The second connecting rods (74) on the left and right sides slide in the chutes (76) on the left and right sides respectively.

2. The discharge detection device based on a lithium battery according to claim 1, characterized in that, The heat dissipation component (8) includes a support frame (81), a first filter screen (82), a fan (83) and a second filter screen (84). The support frame (81) is connected to the lower side of the rear part of the housing (1). Fans (83) are connected to the left and right sides of the front side inside the support frame (81). First filter screens (82) are connected to the left and right sides of the front side inside the support frame (81). The first filter screens (82) are located in front of the fans (83). Second filter screens (84) are connected to the left and right sides of the front side inside the support frame (81). The second filter screens (84) are located behind the fans (83).

3. The discharge detection device based on a lithium battery according to claim 2, characterized in that, The moisture absorption component (9) includes a placement frame (91), a desiccant (92), a clamping block (93), a pull rod (94) and a third spring (95). The placement frame (91) is placed at the rear side inside the support frame (81). The desiccant (92) is placed at intervals inside the placement frame (91). The left and right sides of the rear part of the support frame (81) are both connected in a sliding manner with the pull rod (94). The inner sides of the pull rods (94) are both connected with the clamping block (93). The clamping block (93) clamps the placement frame (91). The third springs (95) are wound around the pull rods (94). The two ends of the third spring (95) are respectively connected with the support frame (81) and the clamping block (93).

4. The discharge detection device based on a lithium battery according to claim 3, characterized in that, It further includes a blocking component (10) for blocking the front side of the lithium battery. The blocking component (10) includes a second guide rod (101), a third connecting rod (102), a fourth spring (103), a baffle (104), a groove cylinder (105) and a contact rod (106). The lower rear sides of the left and right sides of the housing (1) are both connected with the second guide rod (101). The inner sides of the second guide rods (101) are both connected in a sliding manner with the third connecting rod (102). The third connecting rods (102) are both connected with the housing (1) in a sliding manner. The second connecting rod (74) will contact the third connecting rod (102) when moving backward. The fourth springs (103) are wound around the second guide rods (101). The two ends of the fourth spring (103) are respectively connected with the second guide rod (101) and the third connecting rod (102). The baffle (104) is rotatably connected to the upper side of the rear part of the housing (1). The left and right sides of the lower part of the baffle (104) are both connected with the groove cylinder (105). The upper front sides of the third connecting rods (102) are both connected with the contact rod (106). The front parts of the left and right contact rods (106) slide on the left and right groove cylinders (105) respectively.

5. The discharge detection device based on a lithium battery according to claim 4, wherein, It further includes an alarm component (11) for giving a prompt. The alarm component (11) includes a smoke alarm (111), a warning light (112) and screws (113). The smoke alarm (111) is connected to the middle of the upper side of the rear part of the housing (1). The warning light (112) is installed on the rear side of the top of the housing (1) through two screws (113). The warning light (112) is located at the rear side of the battery discharge detector (2). The warning light (112) is electrically connected to the smoke alarm (111).

6. The discharge detection device based on a lithium battery according to claim 3, characterized in that, The placement frame (91) is provided with ventilation holes at intervals.

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