Testing device for storage battery

Abstract

The utility model relates to a testing device for a storage battery. The testing device comprises a base; the mounting bracket is fixed on the base in a lifting manner; the clamping mechanism is fixed on the mounting bracket, and the clamping mechanism is configured to be capable of clamping and fixing the storage battery to be tested; and the inflation mechanism is suitable for being connected with an external air source and is provided with an inflation head fixed on the clamping mechanism, and the inflation head is suitable for being connected with an exhaust port of the storage battery so as to inflate air of the external air source into the storage battery. The testing device can conveniently and stably fix the storage battery, prevents the storage battery from shaking during testing, and ensures the testing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a testing device for a battery. Background Art

[0002] A storage battery is a device that can be charged by an external power source and store electrical energy for later use. Its working principle is to use an external power source to regenerate the internal active substances during charging, store the electrical energy as chemical energy, and then convert the chemical energy into electrical energy output when it needs to be discharged. Storage batteries are widely used, such as automobiles, ships, solar power generation, communication equipment, etc.

[0003] Air tightness is one of the key factors for the normal operation of batteries. Air tightness refers to the degree of airtightness inside the battery. If the air tightness of the battery is not good, external moisture or impurities may enter the battery, causing changes in the electrolyte composition, which in turn affects the performance and service life of the battery. In addition, poor air tightness may also cause leakage of electrolyte liquid inside the battery. Therefore, air tightness testing is crucial to ensure the normal operation of the battery.

[0004] At present, when testing the air tightness of batteries, an air pump is usually used to inflate the batteries, and then the pressure change of the batteries after inflation is observed to determine whether the air tightness meets the requirements. When inflating, it is necessary to ensure that the inflation head connected to the air pump is always connected to the exhaust port of the battery. However, during the inflation process, the battery is easily shaken by the airflow and vibration of the air pump, resulting in the risk of the inflation head being separated from the exhaust port, affecting the efficiency of the test.

[0005] Therefore, this field needs a new technical solution to solve the above problems. Summary of the invention

[0006] In order to solve or improve to a certain extent the technical problem in the prior art that batteries are prone to shaking during air tightness testing, the utility model provides a test device for batteries. The test device comprises: a base; a mounting bracket, the mounting bracket being fixed on the base in a liftable manner; a clamping mechanism, the clamping mechanism being fixed on the mounting bracket and configured to clamp and fix the battery to be tested; and an inflation mechanism, the inflation mechanism being suitable for connecting to an external gas source and having an inflation head fixed on the clamping mechanism, the inflation head being suitable for connecting to the exhaust port of the battery so as to fill the gas from the external gas source into the battery.

[0007] It can be understood by those skilled in the art that the test device for a battery of the utility model includes a base, a mounting bracket, a clamping mechanism and an inflating mechanism. Among them, the mounting bracket can be fixed on the base in a lifting manner, the clamping mechanism is fixed on the mounting bracket, and the clamping mechanism can clamp and fix the battery to be tested. Through the cooperation of the mounting bracket and the clamping mechanism, not only can the battery be conveniently clamped and the position of the battery be flexibly adjusted, but also the position of the battery can be stably and firmly fixed to prevent it from displacement or shaking. The inflating mechanism is connected to an external gas source and has an inflating head fixed on the clamping mechanism. The inflating head is arranged on the clamping mechanism to ensure the stability of the distance between the inflating head and the battery, which is convenient for connection. The inflating head is connected to the exhaust port of the battery, so that the gas from the external gas source is filled into the interior of the battery, which is convenient for air tightness testing. Therefore, the test device of the utility model can conveniently and stably fix the battery, prevent it from shaking during testing, and ensure the test efficiency.

[0008] In the preferred technical solution of the above-mentioned test device for storage batteries, the clamping mechanism includes: a guide rod, the guide rod is fixed to the mounting bracket and extends in the horizontal direction; a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are arranged opposite to each other, and at least one of the first clamping plate and the second clamping plate is slidably fixed to the guide rod. By adjusting the distance between the first clamping plate and the second clamping plate, the storage battery located between the first clamping plate and the second clamping plate can be conveniently fixed therein. At least one of the first clamping plate and the second clamping plate is slidably fixed to the guide rod, which can improve the stability of the clamping mechanism.

[0009] In the preferred technical solution of the above-mentioned testing device for batteries, each of the first clamping plate and the second clamping plate can be slidably fixed on the guide rod, so that the clamping mechanism can clamp the battery more flexibly.

[0010] In the preferred technical solution of the battery test device, a limit rod is provided on the guide rod and is located between the first clamping plate and the second clamping plate. The setting of the limit rod can constrain the positions of the first clamping plate and the second clamping plate, making it easy to adjust them.

[0011] In the preferred technical solution of the above-mentioned test device for storage batteries, the inflation head is provided on at least one of the first clamping plate and the second clamping plate. Through the above-mentioned arrangement, the arrangement positions of the inflation head can be enriched.

[0012] In the preferred technical solution of the above-mentioned test device for batteries, a first inflation head is provided on the first clamping plate, and a second inflation head is provided on the second clamping plate to meet the test requirements of batteries with two exhaust ports.

[0013] In the preferred technical solution of the above-mentioned test device for a storage battery, the inflation mechanism includes a three-way connector, and the three-way connector has an inlet end that can be connected to the external gas source, a first outlet end connected to the first inflation head, and a second outlet end connected to the second inflation head. Through the above-mentioned arrangement, the components of the inflation mechanism can be simplified, and it is convenient to use the external gas source to simultaneously deliver gas to the first inflation head and the second inflation head.

[0014] In the preferred technical solution of the above-mentioned test device for storage batteries, a pressure regulating valve is provided between the external gas source and the inlet end. The provision of the pressure regulating valve can conveniently adjust the inflation pressure to improve the test accuracy.

[0015] In the preferred technical solution of the above-mentioned test device for storage batteries, a first pneumatic switch is provided between the pressure regulating valve and the inlet end. Through the above-mentioned arrangement, the timing of the external gas source delivering gas to the first inflation head and the second inflation head can be conveniently controlled.

[0016] In the preferred technical solution of the above-mentioned test device for a storage battery, a second pneumatic switch is provided between the first outlet and the first gas filling head; and / or a third pneumatic switch is provided between the second outlet and the second gas filling head. The provision of the second pneumatic switch and the third pneumatic switch can flexibly select whether the gas flows to the first gas filling head or the second gas filling head according to actual needs.

[0017] In the preferred technical solution of the above-mentioned test device for a storage battery, a pressure detector is further provided between the first pneumatic switch and the inlet end. The setting of the pressure detector can accurately obtain the inflation pressure and observe the pressure change of the storage battery after inflation, thereby quantitatively judging the air tightness of the storage battery.

[0018] In the preferred technical solution of the above-mentioned test device for a storage battery, the test device further comprises a water storage tank, which is fixed on the base and configured to receive the storage battery and water for submerging the storage battery. The provision of the water storage tank can visually observe whether the storage battery submerged therein is leaking, thereby qualitatively judging the air tightness of the storage battery.

[0019] In the preferred technical solution of the above-mentioned testing device for a storage battery, the water storage tank can be slidably fixed on the base to facilitate adjusting the position of the storage battery.

[0020] In the preferred technical solution of the above-mentioned testing device for storage batteries, an openable and closable drain port is provided at the bottom of the water storage tank to facilitate drainage.

[0021] In the preferred technical solution of the above-mentioned test device for a battery, the test device further comprises a timer, and the timer is fixed on the mounting bracket to accurately record the test time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of an embodiment of the utility model of a test device for a battery;

[0024] Figure 2 It is a left view of an embodiment of the test device for a battery of the utility model;

[0025] Figure 3 It is a structural schematic diagram of an embodiment of a water storage tank, a mounting bracket, a clamping mechanism and an air charging mechanism in a test device for a battery of the utility model;

[0026] Figure 4 The utility model is a structural schematic diagram of an embodiment of a charging mechanism in a battery testing device of the utility model.

[0027] List of reference numerals:

[0028] 100, test device; 110, base; 111, slide rail; 120, water tank; 121, pulley; 122, drain; 123, handle; 130, mounting bracket; 131, first side plate; 132, second side plate; 133, connecting plate; 134, guide block; 140, lifting mechanism; 141, vertical guide rod; 142, horizontal connecting rod; 143, lifting adjustment handle; 144, adjustment rod; 150, clamping mechanism; 151, guide rod; 152, limit rod; 153, first clamping plate; 154, second clamping plate; 155, first Clamping and adjusting handle; 156, second clamping and adjusting handle; 160, inflation mechanism; 161, pressure regulating valve; 162, first pneumatic switch; 163, three-way connector; 1631, inlet end; 1632, first outlet end; 1633, second outlet end; 164, second pneumatic switch; 165, inflation head; 1651, first inflation head; 1652, second inflation head; 166, inflation tube; 167, pressure detector; 170, timer; 200, battery; 210, exhaust port; 211, first exhaust port; 212, second exhaust port. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0030] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "front", "back", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0031] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In order to solve or improve to a certain extent the technical problem in the prior art that the battery is easy to shake during the air tightness test, the utility model provides a test device 100 for the battery 200. The test device 100 includes: a base 110; a mounting bracket 130, the mounting bracket 130 is fixed on the base 110 in a liftable manner; a clamping mechanism 150, the clamping mechanism 150 is fixed on the mounting bracket 130, and is configured to clamp and fix the battery 200 to be tested; and a gas filling mechanism 160, the gas filling mechanism 160 is suitable for connecting with an external gas source (not shown in the figure), and has a gas filling head 165 fixed on the clamping mechanism 150, and the gas filling head 165 is suitable for connecting with the exhaust port 210 of the battery 200, so as to fill the gas of the external gas source into the battery 200.

[0033] like Figure 1 and Figure 2 As shown, in one or more embodiments, the test device 100 for the battery 200 of the utility model includes components such as a base 110, a mounting bracket 130, a clamping mechanism 150 and an air charging mechanism 160. Among them, the mounting bracket 130 can be lifted and fixed on the base 110; the clamping mechanism 150 forms a fixed connection with the mounting bracket 130; the air charging mechanism 160 is connected to an external gas source, and has an air charging head 165 fixed on the clamping mechanism 150 and connected to the exhaust port 210 of the battery 200 to be tested. In this way, the gas from the external gas source can be easily filled into the interior of the battery 200 to test the air tightness of the battery 200. In addition, since the clamping mechanism 150 can stably clamp and fix the battery 200, it prevents the battery 200 from shaking during the test, thereby improving the efficiency of the test.

[0034] like Figure 1 and Figure 2 As shown, in one or more embodiments, the base 110 is a substantially rectangular parallelepiped frame structure to provide a suitable installation space for other components. The base 110 can be made of a suitable metal material to have good mechanical properties, such as stainless steel, cast iron, etc. Alternatively, the base 110 can also be made of a suitable material, such as marble, wood, etc.

[0035] like Figure 1-Figure 3 As shown, in one or more embodiments, the test device 100 of the utility model further includes a water tank 120. The water tank 120 is arranged on the top of the base 110. The water tank 120 allows the battery 200 to be placed therein, and a certain amount of water (such as tap water, etc.) can be placed in the water tank 120 to submerge the battery 200, so as to qualitatively detect whether the battery 200 is leaking. The shape of the water tank 120 can be, but is not limited to, a rectangle, a square, etc. Based on Figure 1 In the orientation shown, the water tank 120 has an upward opening so that the battery 200 can be placed or taken out from above. In one or more embodiments, the water tank 120 can be slidably fixed on the base 110. In this way, by adjusting the position of the water tank 120, the battery 200 can be conveniently placed or taken out without being interfered by other components (such as the mounting bracket 130, the clamping component, etc.). Figure 2 In one or more embodiments, a slide rail 111 extending in the front-to-back direction (i.e., the width direction of the base 110) is provided on the top of the base 110, and a pulley 121 corresponding to the slide rail 111 is provided at the bottom of the water storage tank 120. Alternatively, the water storage tank 120 and the base 110 may be slidably connected in other suitable ways, such as a slider-slideway, etc. Figure 3 In one or more embodiments, a drain port 122 that can be opened and closed is provided at the bottom of the water storage tank 120. The arrangement position, number and shape of the drain port 122 can be adjusted according to actual needs. The setting of the drain port 122 can conveniently drain the water in the water storage tank 120. Figure 1-Figure 3 In one or more embodiments, a handle 123 is further provided at the front of the water storage tank 120 for the user to hold.

[0036] like Figure 1-Figure 3 As shown, the mounting bracket 130 is fixed on the base 110 in a liftable manner through the lifting mechanism 140. Figure 3 In one or more embodiments, the mounting bracket 130 includes a first side plate 131 and a second side plate 132 opposite to each other, and a connecting plate 133 between the first side plate 131 and the second side plate 132. Figure 3In the orientation shown, the first side plate 131 and the second side plate 132 extend substantially in the front-to-back direction. The connecting plate 133 is arranged at the rear side of the first side plate 131 and the second side plate 132, and extends substantially in the left-right direction (i.e., the length direction of the base 110). In one or more embodiments, three guide blocks 134 spaced apart from each other are provided on one side (i.e., the rear side) of the connecting plate 133 away from the first side plate 131 and the second side plate 132. Each guide block 134 can be matched with a corresponding vertical guide rod 141 or an adjustment rod 144 on the lifting mechanism 140, so that the entire mounting bracket 130 can be raised or lowered in the vertical direction.

[0037] like Figure 1-Figure 3 As shown, in one or more embodiments, the lifting mechanism 140 includes components such as a vertical guide rod 141, a transverse connecting rod 142, a lifting and lowering adjustment handle 143 and an adjustment rod 144. Among them, two vertical guide rods 141 are arranged at a distance from each other at the rear of the base 110. A transverse connecting rod 142 extending approximately in the left-right direction is provided on the top of the two vertical guide rods 141. The vertical guide rod 141 can be fixed to the base 110 by welding, screwing or other suitable methods. The number of vertical guide rods 141 can also be set to other suitable numbers more or less than 2. The vertical guide rod 141 and the transverse connecting rod 142 can be made of suitable metal materials, such as stainless steel, cast iron, etc. An adjustment rod 144 extending downward approximately in the vertical direction is provided in the middle of the transverse connecting rod 142, and a lifting and lowering adjustment handle 143 is provided at the top of the adjustment rod 144. The vertical guide rods 141 are respectively inserted into the guide blocks 134 on the left and right sides of the mounting bracket 130, and the adjustment rod 144 is inserted into the guide block 134 in the middle of the mounting bracket 130. By controlling the forward or reverse rotation of the lifting adjustment handle 143, the mounting bracket 130 can be stably raised or lowered along the vertical guide rods 141, thereby adjusting the position of the mounting bracket 130 in the vertical direction. Alternatively, the lifting mechanism 140 can also adopt other suitable structures, such as a gear-rack, etc.

[0038] like Figure 1-Figure 3 As shown, in one or more embodiments, the clamping mechanism 150 includes a guide rod 151, a first clamping plate 153, a second clamping plate 154 and other components. The guide rod 151 is horizontally fixed to the mounting bracket 130, and at least one of the first clamping plate 153 and the second clamping plate 154 is slidably fixed to the guide rod 151. The guide rod 151 is arranged between the first side plate 131 and the second side plate 132, and is located at the front side of the first side plate 131 and the second side plate 132 (i.e., away from the connecting plate 133). The guide rod 151 extends generally in the horizontal direction. Based on Figure 1In the orientation shown, the guide rod 151 extends approximately in the left-right direction. In one or more embodiments, the guide rod 151 includes three guide rods 151 spaced from each other in the front-to-back direction. Alternatively, the number of guide rods 151 can also be adjusted to other suitable numbers more or less than 3 according to actual needs, such as 2, 4, etc. In one or more embodiments, a limiting rod 152 is also provided on the guide rod 151, and the limiting rod 152 is positioned between the first clamping plate 153 and the second clamping plate 154. Specifically, the limiting rod 152 extends approximately in the front-to-back direction, and the limiting rod 152 is fixedly connected to each guide rod 151. The setting of the limiting rod 152 can not only constrain the positions of the first clamping plate 153 and the second clamping plate 154, improve the adjustment efficiency, but also appropriately increase the mechanical strength and structural stability of the guide rod 151.

[0039] Continue to see Figure 1 and Figure 3 In one or more embodiments, the first clamping plate 153 and the second clamping plate 154 can be slidably fixed on the guide rod 151 to flexibly adjust the positions of the first clamping plate 153 and the second clamping plate 154, so as to conveniently clamp and fix the battery 200 to be tested. In one or more embodiments, the first clamping plate 153 is adjusted on the guide rod 151 by a first clamping adjustment handle 155 located on the left side of the first side plate 131, and the second clamping plate 154 is adjusted on the guide rod 151 by a second clamping adjustment handle 156 located on the right side of the second side plate 132. The first clamping adjustment handle 155 and the second clamping adjustment handle 156 are provided to conveniently and quickly adjust the distance between the first clamping plate 153 and the second clamping plate 154, so as to achieve the purpose of clamping and fixing the battery 200. Alternatively, the first clamping plate 153 and the second clamping plate 154 can also be slidably connected with the guide rod 151 in other suitable ways, such as a gear-rack. Alternatively, the first clamping plate 153 is slidably fixed on the guide rod 151, and the second clamping plate 154 is fixedly connected to the guide rod 151 (for example, welded together). Alternatively, the first clamping plate 153 is fixedly connected to the guide rod 151, and the second clamping plate 154 is fixedly connected to the guide rod 151.

[0040] like Figure 1-Figure 4As shown, in one or more embodiments, the inflation mechanism 160 includes components such as a pressure regulating valve 161, an inflation head 165 and an inflation tube 166. The inflation tube 166 can be connected to an external air source. The external air source can be compressed air or other suitable gases. The pressure regulating valve 161 is arranged in the inflation tube 166 to adjust the size of the inflation pressure. The inflation head 165 is fixed on the clamping mechanism 150 so as to move with the clamping mechanism 150, thereby ensuring a stable distance between the inflation head 165 and the battery 200 to be tested. The inflation head 165 is arranged on at least one of the first clamping plate 153 and the second clamping plate 154. For example, the inflation head 165 is only arranged on the first clamping plate 153, or the inflation head 165 is only arranged on the second clamping plate 154, so as to flexibly adjust the position of the inflation head 165. Alternatively, the inflation head 165 includes a first inflation head 1651 arranged on the first clamping plate 153 and a second inflation head 1652 arranged on the second clamping plate 154, so as to meet the test needs of the battery 200 having two exhaust ports 210. Specifically, during the test, the first inflation head 1651 is connected to the first exhaust port 211 of the battery 200, and the second inflation head 1652 is connected to the second exhaust port 212 of the battery 200, so that the two exhaust ports 210 are inflated at the same time, thereby improving the test efficiency.

[0041] like Figure 4As shown, in one or more embodiments, the inflation mechanism 160 also includes a three-way connector 163. The three-way connector 163 has an inlet end 1631, a first outlet end 1632 and a second outlet end 1633 that are interconnected. Among them, the inlet end 1631 is connected to the pressure regulating valve 161. That is, the pressure regulating valve 161 is arranged between the external gas source and the inlet end 1631. The first outlet end 1632 is connected to the first inflation head 1651, and the second outlet end 1633 is connected to the second inflation head 1652. In this way, the external gas source can be used to simultaneously deliver gas to the first inflation head 1651 and the second inflation head 1652, thereby improving the utilization rate of the components and the stability of the gas pressure. In one or more embodiments, a first pneumatic switch 162 is provided between the pressure regulating valve 161 and the inlet end 1631 to control the timing of the external gas source flowing to the inlet end 1631. In one or more embodiments, a second pneumatic switch 164 is provided between the first outlet port 1632 and the first gas filling head 1651. Through the above-mentioned arrangement, when the first pneumatic switch 162 is turned on, the gas from the external gas source flows in from the inlet port 1631 and flows to the first gas filling head 1651 and the second gas filling head 1652 respectively. Then, by controlling the opening and closing of the second pneumatic switch 164, it is possible to control whether the gas flows to the first gas filling head 1651. Specifically, when the second pneumatic switch 164 is turned on, the gas flows to the first gas filling head 1651 and the second gas filling head 1652 at the same time; when the second pneumatic switch 164 is turned off, the gas flows only to the second gas filling head 1652. Alternatively, a third start switch (not shown in the figure) may also be provided separately or simultaneously between the second outlet port 1633 and the second gas filling head 1652.

[0042] like Figure 1 and Figure 3 As shown, in one or more embodiments, the inflation mechanism 160 further includes a pressure detector 167. The pressure detector 167 is arranged between the first pneumatic switch 162 and the inlet end 1631 to detect the pressure in the inflation tube 166. The type of the pressure detector 167 is not limited, such as a liquid column pressure gauge, an elastic pressure gauge, a load pressure gauge, an electric pressure gauge, etc.

[0043] like Figure 1 and Figure 3 As shown, in one or more embodiments, the utility model further includes a timer 170. The timer 170 is arranged on the mounting bracket 130. Specifically, the timer 170 is fixed on the connecting plate 133 of the mounting bracket 130 for easy observation. Alternatively, the timer 170 can also be arranged on other suitable positions such as the base 110 and the transverse connecting rod 142. The types of the timer 170 include but are not limited to a digital timer 170, a pointer timer 170, etc.

[0044] When the test device 100 of the utility model is in use, the air tightness of the battery 200 can be tested by the following steps, and can also be adjusted according to actual needs. Step S1: Pour an appropriate amount of water into the water tank 120. Step S2: Control the lifting and lowering of the mounting bracket 130 through the lifting and lowering adjustment handle 143 of the lifting mechanism 140, and clamp and fix the battery 200 to be tested through the first clamping handle and the second clamping handle of the clamping mechanism 150. Step S3: Connect the inflation head 165 of the inflation mechanism 160 to the exhaust port 210 on the battery 200. Step S4: Place the battery 200 in the water tank 120, and make the water in the water tank 120 submerge the battery 200. Step S5: Open the pressure regulating valve 161, the first pneumatic switch 162, the second pneumatic switch 164 and other components to fill the gas from the external gas source into the battery 200. Observe the reading on the pressure detector 167 and adjust the opening of the pressure regulating valve 161 to ensure that the pressure in the gas filling tube 166 meets the test requirements (e.g., 20kPa-30kPa). Step S6: Turn off the first pneumatic switch 162 to disconnect the connection between the external gas source and the battery 200. Step S7: Observe the change in the reading of the pressure detector 167 within a certain period of time (e.g., 1min-5min), so as to quantitatively determine the air tightness of the battery 200. Step S8: Observe whether there are bubbles in the water storage tank 120, and further qualitatively determine the air tightness of the battery 200. When a single test is completed, the battery 200 can be lifted and separated from the water storage tank 120 by the lifting and adjusting handle 143. Then, pull the water storage tank 120 outward to replace the battery 200 to be tested. During the entire test process, the user does not need to put his hand into the water storage tank 120 for operation, which can avoid personal injury caused by leakage of the battery 200. When the entire test is completed, the drain port 122 on the water storage tank 120 can be opened to quickly drain the water.

[0045] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A testing device for a battery, characterized in that: The testing device comprises: Pedestal; A mounting bracket, the mounting bracket being fixed on the base in a liftable manner; a clamping mechanism, the clamping mechanism being fixed to the mounting bracket and being configured to clamp and fix the battery to be tested; and An air filling mechanism, the air filling mechanism is suitable for connecting with an external air source and has an air filling head fixed on the clamping mechanism, the air filling head is suitable for connecting with the exhaust port of the battery so as to fill the gas of the external air source into the battery; Wherein, the clamping mechanism comprises: a guide rod, which is fixed on the mounting bracket and extends in the horizontal direction; a first clamping plate and a second clamping plate, which are arranged opposite to each other, and at least one of the first clamping plate and the second clamping plate is slidably fixed on the guide rod; Wherein, a first inflation head is provided on the first clamping plate, and a second inflation head is provided on the second clamping plate.

2. The battery testing device according to claim 1, characterized in that: Each of the first clamping plate and the second clamping plate is slidably fixed on the guide rod; and / or A limiting rod is provided on the guide rod and is located between the first clamping plate and the second clamping plate; and / or The inflation head is provided on at least one of the first clamping plate and the second clamping plate.

3. The battery testing device according to claim 1, characterized in that: The inflation mechanism comprises a three-way connector having an inlet end connectable to the external air source, a first outlet end connected to the first inflation head, and a second outlet end connected to the second inflation head.

4. The battery testing device according to claim 3, characterized in that: A pressure regulating valve is provided between the external gas source and the inlet end.

5. The battery testing device according to claim 4, characterized in that: A first pneumatic switch is provided between the pressure regulating valve and the inlet end.

6. The battery testing device according to claim 5, characterized in that: A second pneumatic switch is provided between the first outlet end and the first inflation head; and / or A third pneumatic switch is provided between the second outlet end and the second inflation head; and / or A pressure detector is also provided between the first pneumatic switch and the inlet end.

7. The battery testing device according to claim 6, characterized in that: The testing device further comprises a water tank, which is fixed to the base and configured to receive the battery and water for submerging the battery; and / or The testing device further comprises a timer, and the timer is fixed on the mounting bracket.

8. The battery testing device according to claim 7, characterized in that: The water storage tank is slidably fixed on the base; and / or An openable and closable drain port is provided at the bottom of the water storage tank.

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