Pressure measuring and gas collecting device and battery internal pressure detecting and gas collecting equipment

Abstract

The utility model provides a pressure measuring and gas collecting device and battery internal pressure detecting and gas collecting equipment. The pressure measuring and gas collecting device comprises a needle head, a pressure measuring component and a gas collecting component, the needle head comprises an insertion end and a connection end, and the insertion end is used for being inserted into a to-be-detected battery and is in sealed connection with the to-be-detected battery; the pressure measuring part is hermetically connected with the connecting end and is communicated with the interior of the battery; and the gas collection part is hermetically connected with the connecting end and is communicated with the interior of the battery, so that the technical problems of tedious operation of internal pressure detection and gas collection and relatively high detection cost can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery detection technical field, concretely relates to a kind of pressure measurement gas collection device and battery internal pressure detection and gas collection equipment. BACKGROUND

[0002] Lithium ion battery in use, with the growth of use time, or in high temperature, high pressure and other extreme environments, the electrolyte in the battery is largely decomposed and gas production, leading to the internal pressure of the shell of battery, if the internal pressure of shell continues to increase, then it will lead to the internal pressure of battery, safety valve opens, battery leakage will also appear, capacity drops, life rapidly reduces, damages electronic product, endangers user safety.

[0003] In order to improve the charge-discharge performance, safety performance and long service life of battery, the internal pressure of battery in use needs to be detected, and the gas in battery needs to be collected for testing, the internal pressure detection device at present stage is single in function, and additional gas collection device is needed to collect gas, which is complicated to operate and increases detection cost. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of pressure measurement gas collection device and battery internal pressure detection and gas collection equipment to improve the technical problems such as internal pressure detection and gas collection operation complicated and detection cost higher.

[0005] To achieve the above object and other related purposes, the utility model provides a kind of pressure measurement gas collection device, the pressure measurement gas collection device includes needle, pressure measuring component and gas collection component;The needle includes insertion end and connecting end, and the insertion end is used to insert the inside of the battery to be detected and is sealedly connected with the battery to be detected;Pressure measuring component is sealedly connected with connecting end, and is communicated with the inside of battery;Gas collection component is sealedly connected with connecting end, and is communicated with the inside of battery.

[0006] In the above technical scheme, including the pressure measuring component and the gas collection component that can be communicated to the inside of battery through needle simultaneously, the pressure measuring component is used to detect the internal pressure of battery, and the gas collection component is used to extract the gas in the inside of battery, two actions only need one device, and can be realized by needle once inserted into the inside of battery, simplifies operation step, and reduces detection cost.

[0007] In the pressure measurement gas collection device example of the utility model, the pressure measurement gas collection device further includes communicating piece, and the communicating piece includes communicating first port, second port, third port and switch, the first port is sealedly communicated with needle, the second port is sealedly communicated with pressure measuring component, and the third port is sealedly communicated with gas collection component;The switch is used to control the on-off of pressure measuring component and / or gas collection component and connecting end.

[0008] In the technical scheme, the pressure measuring component, the gas collecting component and the needle are communicated through the communication member, so that the installation is convenient, the maintenance is convenient, the switch is convenient to set and the like are achieved.

[0009] The utility model also provides a battery internal pressure detection and gas collection equipment, including any one of claim 1 to 2's pressure measuring and gas collecting device, Z axis moving device and base plate, Z axis moving device is indirectly or directly installed in base plate, Z axis moving device includes Z axis transmission mechanism and pressure measuring and gas collecting device mounting seat, pressure measuring and gas collecting device mounting seat is transmission connection with Z axis transmission mechanism, pressure measuring and gas collecting device mounting seat is used for installing pressure measuring and gas collecting device, and drives pressure measuring and gas collecting device motion along Z axis.

[0010] In the technical scheme, the pressure measuring component, the gas collecting component and the needle are communicated through the communication member, so that the installation is convenient, the maintenance is convenient, the switch is convenient to set and the like are achieved.

[0011] In the utility model battery internal pressure detection and gas collection equipment one example, battery internal pressure detection and gas collection equipment still include the tool fixture of installing on base plate, and the tool fixture is used for positioning clamping battery to be detected, and the tool fixture includes clamp transmission mechanism and two opposite setting clamping plates, and clamp transmission mechanism is transmission connection with two clamping plates, and drives two clamping plates to move towards each other or move away simultaneously.

[0012] In the technical scheme, the pressure measuring component, the gas collecting component and the needle are communicated through the communication member, so that the installation is convenient, the maintenance is convenient, the switch is convenient to set and the like are achieved.

[0013] In the utility model battery internal pressure detection and gas collection equipment one example, clamp transmission mechanism includes linear motion component, two symmetric setting drive rods, two symmetric setting moving plates and two guide rail slider components, two drive rods are transmission connection with linear motion component, and do linear motion with linear motion component simultaneously, and each drive rod is rotationally connected with cam, two moving plates are slidably connected with two drive rods through cam, each moving plate is provided with sliding slot, the symmetry axis of two moving plates is symmetrical, and the included angle between sliding slot and symmetry axis is provided, two guide rail slider components are opposite to install in base plate, and are perpendicular to the movement direction of linear motion component, and two guide rail slider components are slidably connected with moving plate.

[0014] In the technical scheme, the two mobile plates are symmetrically arranged, the two sliding grooves are symmetrically arranged and have an included angle with the symmetry axis, and the two guide rail sliding block components limit the moving direction of the two mobile plates, so that the two mobile plates can move towards each other or away from each other while the cam connected with the sliding groove is driven by the linear motion component to move linearly. The structure is ingenious and has high centering accuracy.

[0015] In the battery internal pressure detection and gas collection equipment example, the opposite surfaces of the two clamping plates are respectively provided with the baffles, and the hardness of the baffles is less than the surface hardness of the battery to be detected.

[0016] In the technical scheme, the two mobile plates are symmetrically arranged, the two sliding grooves are symmetrically arranged and have an included angle with the symmetry axis, and the two guide rail sliding block components limit the moving direction of the two mobile plates, so that the two mobile plates can move towards each other or away from each other while the cam connected with the sliding groove is driven by the linear motion component to move linearly. The structure is ingenious and has high centering accuracy.

[0017] In the battery internal pressure detection and gas collection equipment example, the opposite surfaces of the two clamping plates are respectively provided with the baffles, and the hardness of the baffles is less than the surface hardness of the battery to be detected.

[0018] In the technical scheme, the two mobile plates are symmetrically arranged, the two sliding grooves are symmetrically arranged and have an included angle with the symmetry axis, and the two guide rail sliding block components limit the moving direction of the two mobile plates, so that the two mobile plates can move towards each other or away from each other while the cam connected with the sliding groove is driven by the linear motion component to move linearly. The structure is ingenious and has high centering accuracy.

[0019] In the battery internal pressure detection and gas collection equipment example, the opposite surfaces of the two clamping plates are respectively provided with the baffles, and the hardness of the baffles is less than the surface hardness of the battery to be detected.

[0020] In the technical scheme, the two mobile plates are symmetrically arranged, the two sliding grooves are symmetrically arranged and have an included angle with the symmetry axis, and the two guide rail sliding block components limit the moving direction of the two mobile plates, so that the two mobile plates can move towards each other or away from each other while the cam connected with the sliding groove is driven by the linear motion component to move linearly. The structure is ingenious and has high centering accuracy.

[0021] In the battery internal pressure detection and gas collection equipment example, the opposite surfaces of the two clamping plates are respectively provided with the baffles, and the hardness of the baffles is less than the surface hardness of the battery to be detected.

[0022] In the technical scheme, the X-axis transmission mechanism provides and transmits power, and the X-axis moving mechanism drives the movement of the Z-axis moving device or the Y-axis moving device, so as to realize mechanical automation of the movement of the pressure measuring and gas collecting device along the X-axis.

[0023] In the battery internal pressure detection and gas collection equipment example of the utility model, the Y-axis moving device includes a Y-axis transmission mechanism and a Y-axis moving mechanism; the Y-axis moving mechanism is in transmission connection with the Y-axis transmission mechanism, and the Y-axis moving mechanism is used for mounting the X-axis moving device or the Z-axis moving device.

[0024] In the technical scheme, the Y-axis transmission mechanism provides and transmits power, and the Y-axis moving mechanism drives the movement of the Z-axis moving device or the X-axis moving device, so as to realize mechanical automation of the movement of the pressure measuring and gas collecting device along the Y-axis.

[0025] The utility model discloses a pressure measuring and gas collecting device, including the pressure measuring component and gas collection component that can be connected to the inside of battery through needle head simultaneously, the pressure measuring component is used for detecting the internal pressure of battery, and the gas collection component is used for extracting the gas in the inside of battery, two actions only need an installation, and can realize through needle head once insertion inside battery, simplifies the operation step, and reduces the detection cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other embodiments according to these drawings.

[0027] Figure 1 It is the structural schematic diagram of the battery internal pressure detection and gas collection equipment example of the utility model;

[0028] Figure 2 It is the pressure measuring and gas collecting device and the installation structure schematic diagram of the pressure measuring and gas collecting device of the battery internal pressure detection and gas collection equipment example of the utility model;

[0029] Figure 3 It is the structural schematic diagram of the battery internal pressure detection and gas collection equipment example of the utility model;

[0030] Figure 4 It is the structural schematic diagram of the Z-axis moving device in the battery internal pressure detection and gas collection equipment example of the utility model;

[0031] Figure 5 It is the structural schematic diagram of the tool fixture located on the substrate in the battery internal pressure detection and gas collection equipment example of the utility model;

[0032] Figure 6The utility model discloses a battery internal pressure detection and gas collection equipment one embodiment jig's structure schematic view.

[0033] Figure 7 The utility model discloses a battery internal pressure detection and gas collection equipment one embodiment jig's structure schematic view.

[0034] Element number explanation

[0035] 10, battery internal pressure detection and gas collection equipment, 11, pressure measuring and gas collecting device, 111, needle, 112, pressure measuring part, 113, gas collecting part, 114, communication piece, 1141, first port, 1142, second port, 1143, third port, 1144, switch, 12, Z axis moving device, 121, Z axis transmission mechanism, 122, pressure measuring and gas collecting device mounting seat, 1221, recess, 123, cover plate, 13, base plate, 14, jig clamp, 141, clamp transmission mechanism, 1411, linear motion part, 1412, drive rod, 1413, moving plate, 1414, guide rail sliding block part, 1415, cam, 1416, sliding groove, 142, clamping plate, 143, partition, 144, positioning rod, 15, X axis moving device, 151, X axis transmission mechanism, 152, X axis moving mechanism, 16, Y axis moving device, 161, Y axis transmission mechanism, 162, Y axis moving mechanism. DETAILED DESCRIPTION

[0036] The embodiments of the present application will be described in detail with specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. The present application can also be implemented or applied in other different embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present application are for describing specific embodiments, and are not intended to limit the protection scope of the present application. The test methods in the following embodiments are not specified, and are usually performed according to conventional conditions or the conditions recommended by the manufacturers.

[0037] When the embodiments give numerical ranges, it should be understood that, unless otherwise specified by the present application, each numerical range and any numerical value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present application are consistent with the understanding of the prior art by those skilled in the art and the description of the present application. Any method, device and material of the prior art similar or equivalent to the method, device and material in the embodiments of the present application can be used to realize the present application.

[0038] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model that can be implemented, and the change or adjustment of the relative relationship is also regarded as the scope of the utility model that can be implemented without substantial change of technical content.

[0039] During use of the lithium ion battery, with the increase of use time, or in extreme environments such as high temperature and high pressure, the electrolyte in the battery is largely decomposed and gas is generated, which causes the internal pressure of the battery shell to be too large, if the internal pressure of the shell continues to increase, the internal pressure of the battery will be too large, the safety valve will be opened, and the battery will also leak, the capacity will decrease, the service life will rapidly decrease, the electronic product will be damaged, and the user safety will be endangered.

[0040] In order to improve the charge-discharge performance, safety performance and long-term service life of the battery, it is necessary to detect the internal pressure of the battery in use, and collect the gas in the battery for testing, for monitoring the side reaction in the battery, evaluating the health condition of the battery in use, understanding the state of charge of the battery, etc., so as to achieve the purpose of optimizing the design of the battery.

[0041] However, the inventor found that the internal pressure detection device at the present stage has a single function, and another gas collection device is needed to collect the gas, which is complicated to operate and increases the detection cost.

[0042] Therefore, the utility model provides a pressure measurement and gas collection device, which comprises a pressure measurement component and a gas collection component that can be connected to the inside of the battery through a needle at the same time, the pressure measurement component is used for detecting the internal pressure of the battery, and the gas collection component is used for extracting the gas in the inside of the battery, two actions only need one device, and the needle is inserted into the inside of the battery at one time.

[0043] Please refer to Figures 1 to 7 The utility model provides a pressure measurement and gas collection device 11, which comprises a needle 111, a pressure measurement component 112 and a gas collection component 113, has the functions of measuring internal pressure and collecting gas, simplifies the operation steps and reduces the detection cost.

[0044] Please refer to Figures 1 to 2The needle 111 includes an insertion end and a connection end. The insertion end is used to insert into the interior of the battery to be tested and to be sealed with the battery to be tested. It should be noted that whether the needle 111 is sealed well with the battery to be tested directly affects the accuracy of the internal pressure detection. In this embodiment, an elastic sealable rubber member is bonded to the air intake port, such as at least one of butyl rubber, polysulfide rubber, silicone rubber, polyurethane rubber, or chloroprene rubber. The elastic sealable rubber member is fixed to the housing by gluing, for example, or by gluing with epoxy glue or AB glue. After the glue cures, the needle 111 can be used to penetrate the elastic sealable rubber member and the housing and extend into the battery for testing. The elastic sealable rubber member is self-sealing, that is, no sealing process is required after the needle 111 penetrates. Preferably, when the elastic sealable rubber member is bonded to the side where the explosion-proof valve is located, the glue covers the explosion-proof valve. This arrangement can prevent rupture at the explosion-proof valve when the needle 111 is inserted.

[0045] See also Figures 1 to 2 The pressure measuring component 112 is sealedly connected to the connection end and communicates with the interior of the battery. The pressure measuring component 112 includes a pressure sensor for measuring internal pressure. For example, it can be a capacitive pressure sensor assembly, a point pressure sensor, an inductive pressure sensor, or a piezoresistive pressure sensor, etc., without limitation. As long as it can detect the internal pressure of the battery, the appropriate choice can be adapted as needed. In this embodiment, a piezoresistive pressure sensor is used. Specifically, it utilizes the principle of the piezoresistive effect. Micro-displacement of the diaphragm causes a change in resistance, which is then converted into a standard measurement signal for display on a data acquisition instrument and recorded in a data storage device.

[0046] See also Figures 1 to 2 Gas collection component 113 is sealed and connected to the connection end and communicates with the interior of the battery. Gas collection component 113 is used to collect gas from the battery to facilitate analysis of the gas composition within the battery to be tested. Gas collection component 113 can be obtained through commercial means, and its structure is not described in detail.

[0047] It should be noted that the simultaneous connection of pressure measuring component 112 and gas collection component 113 to the interior of the battery via needle 111 can be achieved by providing two connecting terminals at one end of needle 111, or by using other adapters, without limitation. Regardless of the form, both internal pressure detection and gas collection require only a single device, and can be accomplished by a single insertion of needle 111 into the battery, simplifying the process and reducing testing costs.

[0048] See also Figures 1 to 2In the pressure measurement and gas collection device 11 example of the utility model, the pressure measurement and gas collection device 11 further includes a communicating piece 114, the structural shape of the communicating piece 114 is not limited, for example, it can be T-shaped, Y-shaped or other irregular shape, as long as the communicating piece 114 includes the first port 1141, the second port 1142, the third port 1143 and the switch 1144, the first port 1141 is sealed and communicated with the needle 111, the second port 1142 is sealed and communicated with the pressure measurement component 112, the third port 1143 is sealed and communicated with the gas collection component 113, and the switch 1144 is used to control the on-off of the pressure measurement component 112 and / or the gas collection component 113 and the connecting end. It should be noted that the switch 1144 has many types, which can be a ball valve or a threaded valve, and the like, and is not limited, and can be adaptively selected according to actual needs. The pressure measurement component 112, the gas collection component 113 and the needle 111 are communicated by the communicating piece 114, which has the advantages of convenient installation, convenient maintenance and convenient setting of the switch 1144. In addition, the setting of the switch 1144 can realize the control of the pressure measurement component 112 and the gas collection component 113, and improve the flexibility of the pressure measurement and gas collection device 11.

[0049] Please refer to Figure 3 and Figure 4 The utility model also provides a kind of battery internal pressure detection and gas collection equipment 10, including above-mentioned pressure measurement and gas collection device 11, Z-axis moving device 12 and base plate 13;Z-axis moving device 12 is indirectly or directly installed on base plate 13, and this is not limited, Z-axis moving device 12 includes Z-axis transmission mechanism 121 and pressure measurement and gas collection device mounting seat 122, pressure measurement and gas collection device mounting seat 122 is transmission connection with Z-axis transmission mechanism 121, pressure measurement and gas collection device mounting seat 122 is used to install pressure measurement and gas collection device 11, and drives pressure measurement and gas collection device 11 to move along Z axis, and Z axis direction is as shown in Figure 7 In the embodiment, pressure measurement and gas collection device 11 is installed to Z-axis moving device 12 by pressure measurement and gas collection device mounting seat 122, to realize that pressure measurement and gas collection device 11 can move along Z axis by the transmission of Z-axis transmission mechanism 121, which can increase the pressure of needle 111 inserted into battery shell, and then facilitate the insertion of needle 111 into battery shell with greater hardness, such as steel shell, etc., thereby increasing the use range of the pressure measurement and gas collection device 11. As preferred, Z-axis moving device 12 is provided with pressure measurement and gas collection device mounting seat 122 for installing pressure measurement and gas collection device 11, pressure measurement and gas collection device mounting seat 122 has groove 1221 matched with pressure measurement and gas collection device 11, further, cover plate 123 for protecting pressure measurement and gas collection device 11 is installed on the outside of pressure measurement and gas collection device mounting seat 122, which enables pressure measurement and gas collection device 11 to be installed in groove 1221 and protected by cover plate 123, so as to realize the protection and fixation of pressure measurement and gas collection device 11.

[0050] Please refer to Figure 3 And Figure 5 In the battery internal pressure detection and gas collection equipment 10 example, the battery internal pressure detection and gas collection equipment 10 further includes a tool clamp 14 mounted on the base plate 13, and the tool clamp 14 is used for positioning and clamping the battery to be detected. The tool clamp 14 includes a clamp transmission mechanism 141 and two oppositely arranged clamping plates 142. The clamp transmission mechanism 141 is in transmission connection with the two clamping plates 142 and drives the two clamping plates 142 to move towards each other or move away from each other simultaneously. It should be noted that there are many types of clamp transmission mechanisms 141 that can achieve the simultaneous movement of the two clamping plates 142 towards each other or away from each other, such as a bidirectional screw nut structure or a gear and rack structure, and the like, which are not limited. This arrangement can achieve more efficient and accurate positioning of the battery to be detected when clamped to the center, improving positioning efficiency and accuracy, especially when the battery to be detected is a cylindrical battery. In addition, the simultaneous movement of the two clamping plates 142 can also improve the clamping efficiency and facilitate the symmetry and balance of the clamping force.

[0051] Please refer to Figure 5 And Figure 6 In the battery internal pressure detection and gas collection equipment 10 example, the clamp transmission mechanism 141 includes a linear motion component 1411, two symmetrically arranged drive rods 1412, two symmetrically arranged moving plates 1413, and two guide rail slider components 1414. The two drive rods 1412 are in transmission connection with the linear motion component 1411 and simultaneously move linearly with the linear motion component 1411. Each drive rod 1412 is rotatably connected with a cam 1415, achieving the same direction and parallel linear motion of the two cams 1415. The two moving plates 1413 are respectively in sliding connection with the two drive rods 1412 through the cams 1415. Specifically, each moving plate 1413 is provided with a sliding groove 1416, which is symmetrical relative to the symmetry axis of the two moving plates 1413 and has an included angle between the sliding groove 1416 and the symmetry axis. The two guide rail slider components 1414 are oppositely mounted on the base plate 13 and are perpendicular to the movement direction of the linear motion component 1411. The two guide rail slider components 1414 are respectively in sliding connection with the moving plates 1413. By arranging the sliding grooves 1416 symmetrically arranged on the two moving plates 1413 to have an included angle with the symmetry axis, and limiting the movement direction of the two moving plates 1413 by the two guide rail slider components 1414, the two moving plates 1413 can simultaneously move towards each other or away from each other while the cam 1415 in sliding connection with the sliding groove 1416 is driven by the linear motion component 1411 to move linearly. This arrangement has a clever structure and high centering accuracy.

[0052] Please refer to Figure 5 And Figure 6In the battery internal pressure detection and gas collection equipment 10 example of the utility model, two clamping plates 142 are provided with baffle plates 143 on the opposite plate surfaces respectively, the hardness of the baffle plate 143 is less than the surface hardness of the battery to be detected, the material of the baffle plate 143 can be rubber, foam material, silica gel, latex or fiber products, etc., which is not limited. By setting the baffle plate 143 with the hardness less than the surface hardness of the battery to be detected on the opposite plate surfaces of the two clamping plates 142, the surface of the battery to be detected can be damped and protected, and the clamping force of the clamping plate 142 can be prevented from being too large to affect the internal pressure detection accuracy, and even cause the battery to be broken.

[0053] Please refer to Figure 5 and Figure 6 In the battery internal pressure detection and gas collection equipment 10 example of the utility model, one of the baffle plates 143 and the clamping plate 142 are provided with a clamping pressure sensor (not shown), and the clamping pressure sensor is in control connection with the linear motion component 1411. The clamping pressure sensor realizes the detection and feedback of the clamping force of the work fixture 14 on the battery to be detected, further prevents the clamping force of the clamping plate 142 from being too large to affect the internal pressure detection accuracy, and even causes the battery to be broken, and is also beneficial to realize the automatic control of the clamping of the battery to be detected.

[0054] Please refer to Figure 5 , as preferred, the positioning rod 144 is further provided on the base plate 13, the positioning rod 144 is located at one side of the two sides of the clamping plate 142, and the positioning rod 144 is used for limiting the positioning of the battery to be detected along the length direction of the clamping plate 142, so as to improve the positioning accuracy and detection efficiency.

[0055] Please refer to Figure 3 and Figure 7 In the battery internal pressure detection and gas collection equipment 10 example of the utility model, the battery internal pressure detection and gas collection equipment 10 further comprises an X-axis moving device 15 and a Y-axis moving device 16; the X-axis moving device 15 is arranged on the Y-axis moving device 16, and the Z-axis moving device 12 is arranged on the X-axis moving device 15, so as to drive the Z-axis moving device 12 to move along the X-axis and the Y-axis; or, the Y-axis moving device 16 is arranged on the X-axis moving device 15, and the Z-axis moving device 12 is arranged on the Y-axis moving device 16, so as to drive the Z-axis moving device 12 to move along the X-axis and the Y-axis, and the X-axis and the Y-axis directions are as shown in Figure 7 The above two modes can realize the mechanization of the X-axis movement and the Y-axis movement of the pressure measurement and gas collection device 11, improve the work efficiency of the pressure measurement and gas collection, save manpower, and be beneficial to realize the automatic control. The structure forms of the X-axis moving device 15 and the Y-axis moving device 16 are various, for example, can be a structure directly driven by a linear motor, a gear and rack structure driven by a motor reducer, or a threaded screw structure driven by a hand wheel, etc.

[0056] Referring to Figure 3 and Figure 7 In the battery internal pressure detection and gas collection equipment 10 example, the X-axis moving device 15 includes an X-axis transmission mechanism 151 and an X-axis moving mechanism 152; the X-axis moving mechanism 152 is in transmission connection with the X-axis transmission mechanism 151, and the X-axis moving mechanism 152 is used for mounting the Z-axis moving device 12 or the Y-axis moving device 16. The X-axis transmission mechanism 151 provides and transmits power, for example, can be a linear motor direct drive structure, a motor reducer gear rack structure or a hand wheel driving screw structure, in the embodiment, the Z-axis moving device 12 is mounted on the X-axis moving mechanism 152, and the movement of the Z-axis moving device 12 is realized. The X-axis transmission mechanism 151 adopts a hand wheel driving screw structure, and the mechanization of the pressure measurement and gas collection device 11 moving along the X-axis is realized in a relatively economical way, and the working efficiency is improved.

[0057] Referring to Figure 3 and Figure 7 In the battery internal pressure detection and gas collection equipment 10 example, the Y-axis moving device 16 includes a Y-axis transmission mechanism 161 and a Y-axis moving mechanism 162; the Y-axis moving mechanism 162 is in transmission connection with the Y-axis transmission mechanism 161, and the Y-axis moving mechanism 162 is used for mounting the X-axis moving device 15 or the Z-axis moving device 12. The Y-axis transmission mechanism 161 provides and transmits power, for example, can be a linear motor direct drive structure, a motor reducer gear rack structure or a hand wheel driving screw structure, in the embodiment, the X-axis moving device 15 is mounted on the Y-axis moving mechanism 162, the movement of the X-axis moving device 15 is realized, and the movement of the Z-axis moving device 12 along the Y-axis is realized. The Y-axis transmission mechanism 161 adopts a hand wheel driving screw structure, and the mechanization of the pressure measurement and gas collection device 11 moving along the Y-axis is realized in a relatively economical way, and the working efficiency is improved.

[0058] The utility model discloses a kind of pressure measurement gas sampling devices, including the pressure measurement component and gas collection component that can be simultaneously communicated to the inside of battery by needle, pressure measurement component is used to detect the pressure in battery, gas collection component is used to extract the gas inside battery, two actions only need one device, and it can be realized by needle insertion inside battery once, simplify operation step, reduce detection cost.So, the utility model effectively overcomes some practical problems in prior art thereby has very high utilization value and use significance.The above embodiment is only illustrative to the principle and effect of the utility model, and is not used to limit the utility model.Anyone skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model.Therefore, all equivalent modifications or changes completed by those skilled in the art under the spirit and technical concept disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A pressure measuring gas sampling device, characterized by The application relates to a battery internal pressure detection and gas collection device. The device comprises a needle, a pressure measuring component and a gas collection component. The needle comprises an insertion end and a connecting end, the insertion end is used for inserting into the inside of a battery to be detected and is in sealed connection with the battery to be detected. The pressure measuring component is in sealed connection with the connecting end and is in communication with the inside of the battery.

2. The pressure-measuring gas sampling device according to claim 1, characterized in that The gas collection component is in sealed connection with the connecting end and is in communication with the inside of the battery.

3. A battery internal pressure detecting and gas collecting apparatus characterized by comprising: The device further comprises a communication component, the communication component comprises a first port, a second port and a third port in communication and a switch, the first port is in sealed communication with the needle, the second port is in sealed communication with the pressure measuring component and the third port is in sealed communication with the gas collection component.

4. The apparatus according to claim 3, wherein The switch is used for controlling the on-off of the pressure measuring component and / or the gas collection component and the connecting end.

5. The apparatus according to claim 4, wherein The device further comprises a Z-axis moving device and a base plate. The Z-axis moving device is indirectly or directly installed on the base plate. The Z-axis moving device comprises a Z-axis transmission mechanism and a pressure measuring and gas collection device mounting seat. The pressure measuring and gas collection device mounting seat is in transmission connection with the Z-axis transmission mechanism.

6. The apparatus according to claim 5, wherein The pressure measuring and gas collection device mounting seat is used for mounting the pressure measuring and gas collection device and driving the pressure measuring and gas collection device to move along the Z-axis.

7. The apparatus according to claim 6, wherein The device further comprises a tool clamp installed on the base plate.

8. The apparatus according to claim 3, wherein The tool clamp is used for positioning and clamping a battery to be detected. The tool clamp comprises a clamp transmission mechanism and two oppositely arranged clamping plates. The clamp transmission mechanism is in transmission connection with the two clamping plates and drives the two clamping plates to move towards each other or move away from each other at the same time. The clamp transmission mechanism comprises a linear motion component, two symmetrically arranged driving rods, two moving plates and two guide rail slider components. The two driving rods are in transmission connection with the linear motion component and move linearly at the same time as the linear motion component. Each of the driving rods is rotationally connected with a cam. The two moving plates are in sliding connection with the two driving rods through the cams. Each of the moving plates is provided with a sliding groove. The sliding groove is symmetrical relative to the symmetry axis of the two moving plates and has an included angle between the sliding groove and the symmetry axis. The two guide rail slider components are oppositely arranged on the base plate and are perpendicular to the movement direction of the linear motion component. The two guide rail slider components are in sliding connection with the moving plates. Each of the two clamping plates is provided with a partition plate on the opposite plate surface. The hardness of the partition plate is less than the surface hardness of the battery to be detected. One of the partition plates and the clamping plate is provided with a clamping pressure sensor. The clamping pressure sensor is in control connection with the linear motion component. The device further comprises an X-axis moving device and a Y-axis moving device. The X-axis moving device is arranged on the Y-axis moving device. The Z-axis moving device is arranged on the X-axis moving device to drive the Z-axis moving device to move along the X-axis and the Y-axis. Alternatively, The Y-axis moving device is arranged on the X-axis moving device. The Z-axis moving device is arranged on the Y-axis moving device to drive the Z-axis moving device to move along the X-axis and the Y-axis.

9. The apparatus according to claim 8, wherein The X-axis moving device comprises an X-axis transmission mechanism and an X-axis moving mechanism; the X-axis moving mechanism is in transmission connection with the X-axis transmission mechanism, and the X-axis moving mechanism is used for mounting the Z-axis moving device or the Y-axis moving device.

10. The apparatus according to claim 9, wherein The Y-axis moving device comprises a Y-axis transmission mechanism and a Y-axis moving mechanism; the Y-axis moving mechanism is in transmission connection with the Y-axis transmission mechanism, and the Y-axis moving mechanism is used for mounting the X-axis moving device or the Z-axis moving device.

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