Riveting equipment and battery production equipment

Abstract

The present application provides a riveting device and a battery production device; the riveting device includes a clamping device, a riveting device and a control device; the clamping device is used to clamp a water nozzle and a current collector; the riveting device includes a first driving mechanism and a riveting head; the first driving mechanism is connected to the riveting head and is used to drive the riveting head to move; the control device is connected to the first driving mechanism; the control device is used to detect whether the width of the gap between the deformable section of the water nozzle and the hole wall of the mounting hole of the current collector is less than or equal to a preset value, and in response to the width of the gap being less than or equal to the preset value, control the first driving mechanism to drive the riveting head to rivet the deformable section of the water nozzle and the current collector.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a riveting device and a battery production device. Background Art

[0002] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. The battery device can be a power battery, and the battery device can also be an energy storage battery.

[0003] The battery device includes a battery box, a thermal management component and a battery cell; the thermal management component and the battery cell are both installed in the battery box. The thermal management component generally includes a current collector and a water nozzle connected to each other. The reliability of the existing water nozzle and the current collector after connection is low, which makes the reliability of the battery device low. Utility Model Content

[0004] The main technical problem solved by the present application is to provide a riveting device and a battery production device to solve the problem of low reliability of the water nozzle and the current collector after connection.

[0005] In order to solve the above technical problems, the first technical solution adopted in this application is: providing a riveting device; the riveting device includes a clamping device, a riveting device and a control device; the clamping device is used to clamp the water nozzle and the current collector; the riveting device includes a first driving mechanism and a riveting head; the first driving mechanism is connected to the riveting head, and is used to drive the riveting head to move; the control device is connected to the first driving mechanism; the control device is used to detect whether the width of the gap between the deformable section of the water nozzle and the hole wall of the mounting hole of the current collector is less than or equal to a preset value, and in response to the width of the gap being less than or equal to the preset value, control the first driving mechanism to drive the riveting head to rivet the deformable section of the water nozzle and the current collector.

[0006] In this embodiment, the control device and the first driving mechanism cooperate so that the riveting device performs riveting connection on the water nozzle and the current collector when the width of the gap is less than or equal to a preset value; and does not perform riveting connection on the water nozzle and the current collector when the width of the gap is greater than the preset value. This can solve the problem of a gap between the water nozzle and the current collector after riveting connection due to the large width of the gap, thereby improving the reliability of the riveting connection between the water nozzle and the current collector, and further improving the yield of the riveting connection between the water nozzle and the current collector.

[0007] In some embodiments, the control device includes a controller and a measuring component, the controller is electrically connected to the first drive mechanism and the clamping device, respectively; the measuring component is electrically connected to the controller, and is used to measure the width of the gap; wherein the controller is used to control the clamping device to set the mounting hole of the current collector on the deformable section of the faucet; the controller is also used to detect whether the width of the gap is less than or equal to a preset value, and in response to the width of the gap being less than or equal to the preset value, control the first drive mechanism to drive the rivet head to rivet the deformable section of the faucet and the current collector.

[0008] In this embodiment, the cooperation between the measuring component and the controller can enable the first driving mechanism and the clamping device to automatically complete the riveting connection between the current collector and the water nozzle, thereby improving the automation level of the riveting equipment and improving work efficiency.

[0009] In some embodiments, there are multiple measuring components; the multiple measuring components are spaced apart in a ring shape and are used to detect the width of the gap at multiple positions; wherein, in response to the width of the gap at multiple positions being less than or equal to a preset value, the controller controls the first driving mechanism to drive the rivet head to rivet the deformable section of the faucet and the current collector.

[0010] In this embodiment, multiple measuring components can measure the width of the gap at multiple positions; when the width at multiple positions is less than or equal to a preset value, the riveting device performs riveting connection on the current collector and the water nozzle, thereby solving the problem of low reliability of the current collector and the water nozzle after riveting connection due to excessive width of the local gap when the water nozzle is offset relative to the mounting hole, thereby improving the yield of the current collector and the water nozzle after riveting connection.

[0011] In some embodiments, the measuring assembly is disposed on the rivet head.

[0012] In this embodiment, the measuring assembly is disposed on the rivet head, so that the measuring assembly measures the width of the gap from the inside of the current collector, thereby measuring the width of the gap more accurately and conveniently.

[0013] In some embodiments, the rivet head includes a connecting portion and a head portion that are interconnected, wherein one end of the connecting portion is connected to the first driving mechanism; and a plurality of measuring components are disposed at the other end of the connecting portion and are circumferentially disposed around the head portion.

[0014] In this embodiment, multiple measuring components are arranged at the other end of the connecting part, so that the multiple measuring components can extend out of the current collector along with the connecting part, thereby facilitating installation, maintenance, and replacement of the measuring components, reducing the risk of the measuring components being squeezed when arranged on the head, and facilitating detection of the width of the gap; thereby improving the yield rate of the current collector and the faucet after riveting. Multiple measuring components are arranged circumferentially around the head, so that the multiple measuring components can detect the width of the gap at multiple positions.

[0015] In some embodiments, the preset value is 0.15 mm to 0.25 mm.

[0016] In some embodiments, the control device is also used to detect whether the rivet head is aligned with the deformable section of the faucet, and in response to the rivet head being aligned with the deformable section of the faucet, control the first drive mechanism to drive the rivet head to be inserted into the deformable section.

[0017] In this embodiment, the control device is also used to detect whether the rivet head is aligned with the deformable section of the faucet, so that the deformation degree of the deformable section in each direction is roughly the same, so that the yield of the current collector and the faucet after riveting connection is higher.

[0018] In some embodiments, the clamping device includes a second driving mechanism, a first clamping mechanism and a second clamping mechanism, the second clamping mechanism is used to clamp the water nozzle; the first clamping mechanism is used to clamp the current collector; the second driving mechanism is used to drive the first clamping mechanism and / or the second clamping mechanism to move, so as to set the mounting hole of the current collector on the deformable section of the water nozzle.

[0019] In this embodiment, the cooperation of the second driving mechanism, the first clamping mechanism and the second clamping mechanism is utilized to realize automatic clamping of the current collector and the water nozzle, as well as automatic assembly of the current collector and the water nozzle, thereby reducing the workload and improving the work efficiency.

[0020] In some embodiments, the second clamping mechanism has two placement grooves, each placement groove is used to place a faucet; the two placement grooves have different structures, so that the two placement grooves can only place faucets of different structures.

[0021] In this embodiment, the two placement grooves have different structures, so that each placement groove can only hold a water nozzle of the same type, ensuring that the water nozzle is sleeved in the corresponding installation hole, thereby improving the reliability of the assembly of the water nozzle and the current collector.

[0022] In order to solve the above technical problems, the second technical solution provided by the present application is: to provide a battery production equipment, the battery production equipment includes an assembly equipment and the above-mentioned riveting equipment; the riveting equipment is used to connect the water nozzle to the current collector by riveting to obtain a thermal management component; the assembly equipment is used to assemble the battery cell, the thermal management component and the battery box into a battery device. Since the battery production equipment includes the above-mentioned riveting equipment, the battery production equipment at least has the effect of the above-mentioned riveting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a structural schematic diagram of the electrical equipment provided by this application;

[0025] Figure 2 is a schematic diagram of the structure of the battery device provided by the present application;

[0026] Figure 3 It is a schematic diagram of the structure of a battery cell provided in this application;

[0027] Figure 4 is a cross-sectional view of the current collector and the water nozzle provided in the present application before being riveted together;

[0028] Figure 5 It is a schematic diagram of the structure of the faucet provided by the present application;

[0029] Figure 6 It is a structural schematic diagram of the riveting equipment provided by the present application;

[0030] Figure 7 yes Figure 4 Enlarged view of the middle Q;

[0031] Figure 8 is a cross-sectional view of the current collector and the water nozzle provided in the present application after being riveted together;

[0032] Fig. 9 is a cross-sectional view of a rivet head and a thermal management component provided by the present application;

[0033] Fig.10a It is a structural schematic diagram of the clamping device and the second sub-drive provided by the present application;

[0034] Fig.10b is another structural schematic diagram of the clamping device and the second sub-drive provided by the present application;

[0035] Fig.11 It is a structural schematic diagram of the rivet head and the measuring assembly provided by the present application;

[0036] Fig.12 It is a module diagram of the control device, clamping device and first driving mechanism provided in this application.

[0037] In the figure: 1. battery device; 11. battery box; 111. upper box; 112. lower box; 12. battery cell; 121. connecting member; 122. cover plate; 123. pole; 124. safety valve; 125. electrode assembly; 126. shell; 2. electrical components; 3. riveting equipment; 31. clamping device; 311. first clamping mechanism; 312. second clamping mechanism; 3121. placement groove; 32. riveting device; 321 , first driving mechanism; 3211, first sub-drive; 3212, second sub-drive; 322, rivet head; 3221, connecting part; 3222, head; 33, base; 4, current collector; 41, current collector body; 42, fixing seat; 43, mounting hole; 44, gap; 5, faucet; 51, deformable section; 52, bending section; 53, main body section; 6, thermal management component; 7, control device; 71, measuring component; 72, controller. DETAILED DESCRIPTION

[0038] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0039] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by technicians in this field without making creative work are within the scope of protection of this application.

[0041] The terms "first", "second" and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0042] "Embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices can be power batteries, which are power sources for tools. Power batteries mostly refer to batteries that provide power for electric vehicles, electric trains, electric bicycles, golf carts and other transportation vehicles, as well as aerospace. Of course, battery devices can also be energy storage batteries, which refer to batteries used to store energy from renewable energy sources such as hydropower, thermal power, wind power and solar power stations. With the continuous expansion of the application fields of battery devices, the market demand is also constantly expanding.

[0044] The battery device includes a battery case, a thermal management component and a battery cell; the thermal management component and the battery cell are both installed in the battery case; the thermal management component generally includes a current collector and a water nozzle connected to each other. One end of the water nozzle is located in the mounting hole of the current collector, and the water nozzle and the current collector are welded. However, during welding, due to the thin wall thickness of the water nozzle, the water nozzle is easily deformed, resulting in low reliability of the connection between the water nozzle and the current collector, thereby reducing the reliability of the battery device.

[0045] In the prior art, the water nozzle is inserted into the mounting hole of the current collector, and there is a gap between the water nozzle and the current collector; the rivet head of the riveting equipment is used to expand the water nozzle radially until it is pressed against the hole wall of the mounting hole, thereby riveting the water nozzle to the mounting hole of the current collector. However, the riveting equipment cannot detect the width of the gap; when the gap is too large, after the water nozzle and the mounting hole are riveted, there will still be some gaps between the water nozzle and the hole wall of the mounting hole, which will cause leakage of the water nozzle and the current collector after the riveting connection, thereby reducing the reliability of the connection between the water nozzle and the current collector, and further reducing the reliability of the battery device.

[0046] In order to solve the problem of reduced reliability after the faucet and the current collector are connected, an embodiment of the present application provides a riveting device. The riveting device includes a clamping device, a riveting device and a control device; the clamping device is used to clamp the faucet and the current collector; the riveting device includes a first driving mechanism and a riveting head; the first driving mechanism is connected to the riveting head and is used to drive the riveting head to move; the control device is connected to the first driving mechanism; the control device is used to detect whether the width of the gap between the deformable section of the faucet and the hole wall of the installation hole of the current collector is less than or equal to a preset value, and in response to the width of the gap being less than or equal to the preset value, control the first driving mechanism to drive the riveting head to rivet the deformable section of the faucet and the current collector. The control device and the first driving mechanism cooperate so that the riveting device performs riveting connection on the water nozzle and the current collector when the width of the gap is less than or equal to a preset value; and does not perform riveting connection on the water nozzle and the current collector when the width of the gap is greater than the preset value. This can solve the problem of a gap between the water nozzle and the current collector after riveting connection due to the excessive width of the gap, thereby improving the reliability of the riveting connection between the water nozzle and the current collector, and further improving the yield of the riveting connection between the water nozzle and the current collector.

[0047] The embodiment of the present application provides a battery production device. The battery production device includes a riveting device and an assembly device. The riveting device is used to connect the water nozzle to the current collector by riveting to obtain a thermal management component; the assembly device is used to assemble the battery cell, the thermal management component and the battery box into a battery device.

[0048] The assembly device may be a manipulator, which grabs the battery cell, the thermal management component and the battery case, and assembles the battery cell, the thermal management component and the battery case in a certain order to obtain a battery device. Of course, the assembly device may also be a robot, etc.

[0049] See also Figure 1, the battery device 1 of the present application can be installed on an electrical device to provide electrical energy to the electrical device. For example, the battery device 1 is electrically connected to the electrical device 2 of the electrical device. The electrical device can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, and an electric tool, etc. The vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecrafts, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. For the convenience of explanation, the following embodiments are described by taking the electrical device as a vehicle as an example.

[0050] The electrical device 2 may be a component that can consume electricity, such as an electronic component.

[0051] The electric device may be a vehicle, and the electric device 2 may be a lamp (such as a headlight, a taillight, etc.), a display screen, a dashboard, a control system (such as a controller), etc. of the vehicle. The electric device may also include other parts, such as a vehicle frame, and the battery device 1 and the electric device 2 are both mounted on the vehicle body.

[0052] See also Figure 2 The battery device 1 may include a battery case 11, a thermal management component and a battery cell 12; the battery case 11 has a chamber, and one or more battery cells 12 are accommodated in the accommodating chamber. The battery case 11 plays a role in protecting the battery cells 12, and it is also convenient to gather multiple battery cells 12 together. The battery case 11 may include a lower case 112 and an upper case 111. The shape of the battery case 11 can be specifically set as needed; for example, the shape of the battery case 11 can be cylindrical, and the corresponding battery device 1 can be called a round battery; for another example, the shape of the battery case 11 can be rectangular, and the corresponding battery device 1 can be called a rectangular battery.

[0053] The battery cell 12 may be a secondary battery, which refers to a battery cell 12 that can be continuously used by activating active materials by charging after the battery cell 12 is discharged. The battery cell 12 may include, but is not limited to, a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel metal hydride battery, a nickel cadmium battery, a lead storage battery, and the like.

[0054] See also Figure 3The battery cell 12 may include a housing 126, an electrode assembly 125, and a cover plate 122. The housing 126 has a connected cavity and a mounting port. The number of electrode assemblies 125 may be one or more; the electrode assembly 125 is mounted in the cavity of the housing 126. The cover plate 122 is connected to the housing 126 and covers the mounting port. The housing 126 is filled with an electrolyte, such as an electrolyte.

[0055] The electrode assembly 125 may include an anode electrode sheet and a cathode electrode sheet, and a separator disposed between the anode electrode sheet and the cathode electrode sheet. During the charge and discharge process of the battery cell 12, active ions (such as lithium ions) are inserted and removed back and forth between the anode electrode sheet and the cathode electrode sheet. The separator can prevent the anode electrode sheet and the cathode electrode sheet from short-circuiting to a certain extent, and can allow active ions to pass through.

[0056] The battery cell 12 may also include a safety valve 124 (also referred to as a pressure relief valve), two poles 123 and two connecting members 121 (also referred to as current collecting members). The safety valve 124 may be provided on the cover plate 122, for example, the safety valve 124 is fixed on the cover plate 122, and the safety valve 124 is used to actuate when the internal pressure or temperature of the battery cell 12 reaches a threshold value to discharge the internal electrolyte to reduce the internal pressure or temperature of the battery cell 12. For example, the safety valve 124 may be a temperature-sensitive valve, a pressure-sensitive valve, etc. Two poles 123 may be provided on the cover plate 122, and the two poles 123 are respectively a positive pole 123 and a negative pole 123, and one pole 123 is connected to one connecting member 121 accordingly. The connecting member 121 is located between the cover plate 122 and the electrode assembly 125, and is used to electrically connect the electrode assembly 125 and the pole 123. The shell 126 is a hollow structure, and the material of the shell 126 can be metal or plastic; for example, the material of the shell 126 can be copper, iron, aluminum, steel, aluminum alloy, etc.

[0057] In some examples, the thermal management component is located at the bottom of the battery case 11 and is fixedly mounted on the side wall of the battery case 11. In other examples, the thermal management component is located between adjacent battery cells 12 and is attached to the surface of the battery cells 12. The battery cells 12 can be connected to the thermal management component by thermally conductive adhesive so that heat can be exchanged between the battery cells 12 and the thermal management component. When the temperature of the thermal management component changes, the temperature of the battery cells 12 in contact with the thermal management component changes accordingly.

[0058] The thermal management component is used to adjust the temperature of the plurality of battery cells 12. The thermal management component is provided with a flow channel for circulating fluid or an inner cavity for containing fluid.

[0059] See also Figure 4, the thermal management component 6 includes a current collector 4 and a water nozzle 5. The thermal management component 6 may also include other components such as a water cooling plate. The fluid flowing in the current collector 4 may be a liquid or a gas. Adjusting the temperature refers to heating or dissipating heat to multiple battery cells 12. In some examples, when dissipating heat or cooling the battery cells 12, the thermal management component 6 may be called a cooling component, a cooling system, or a cooling plate, etc. At this time, the current collector may be called a cooling flat tube current collector, and the fluid may also be called a cooling medium or a cooling fluid, for example, a coolant or a cooling gas. In other examples, the thermal management component 6 may also be used for heating to heat up multiple battery cells 12. The fluid may also be called a heat exchange medium, and the fluid may be circulating to achieve a better temperature regulation effect. For example, the fluid may be water, a mixture of water and ethylene glycol, or air, etc.

[0060] The current collector 4 includes a fixing seat 42 and a current collector body 41, wherein the fixing seat 42 is located outside the current collector body 41; the current collector body 41 has a first sub-hole, and the fixing seat 42 has a second sub-hole; the first sub-hole is connected to the second sub-hole and is coaxially arranged to form a mounting hole 43; for example, the current collector body 41 is tubular, and the fixing seat 42 is sheet-shaped.

[0061] The number of the water nozzles 5 can be one or more. For example, there is one water nozzle 5, and the water nozzle 5 can be a structure with an inlet and an outlet integrated into one. For another example, there are two water nozzles 5, one water nozzle 5 is used for fluid inlet, and the other is used for fluid outlet. The pipe openings of multiple current collectors 4 are connected end to end to form a closed structure; the fluid enters the current collector 4 from one water nozzle 5 and flows out from another water nozzle 5.

[0062] See also Figure 4 and Figure 5 , the faucet 5 may include a deformable section 51 and a main section 53, and the main section 53 is connected to the deformable section 51. In some examples, the faucet 5 also includes a bending section 52, which is connected between the deformable section 51 and the main section 53 and protrudes outward, and the current collector 4 contacts and squeezes the bending section 52. In some examples, the fixing seat 42 contacts the bending section 52, and the current collector body 41 is contacted and arranged on a side surface of the fixing seat 42 away from the bending section 52. The fixing seat 42 can reduce the risk of displacement of the current collector 4 during vibration or movement, thereby improving the assembly accuracy, reliability and reliability of the faucet 5 and the current collector 4.

[0063] The material of the deformable section 51 may be metal. The metal may be a single metal, such as iron, copper, silver, etc.; the metal may also be an alloy of the above single metals. The ductility of the metal may be used to allow the deformable section 51 to expand and deform radially. In some examples, the material of the part of the faucet 5 excluding the deformable section 51 may be metal or non-metal.

[0064] The embodiment of the present application provides a riveting device. Figure 4 to Figure 12 The riveting device 3 includes a control device 7, a clamping device 31 and a riveting device 32; the clamping device 31 is used to clamp the water nozzle 5 and the current collector 4; the riveting device 32 includes a first driving mechanism 321 and a riveting head 322; the first driving mechanism 321 is connected to the riveting head 322, and is used to drive the riveting head 322 to move; the control device 7 is connected to the first driving mechanism 321; the control device 7 is used to detect whether the width d of the gap 44 between the deformable section 51 of the water nozzle 5 and the hole wall of the mounting hole 43 of the current collector 4 is less than or equal to a preset value, and in response to the width d of the gap 44 being less than or equal to the preset value, control the first driving mechanism 321 to drive the riveting head 322 to perform riveting connection between the deformable section 51 of the water nozzle 5 and the current collector 4.

[0065] In some examples, the side wall of the current collector 4 has a mounting hole 43. The deformable section 51 of the faucet 5 is located in the mounting hole 43 of the side wall of the current collector 4, and there is a gap 44 between the deformable section 51 of the faucet 5 and the hole wall of the mounting hole 43. The first driving mechanism 321 is used to drive the rivet head 322 to extend into or out of the current collector 4 along the first direction X, and drive the rivet head 322 to approach or move away from the deformable section 51 of the faucet 5 along the second direction Y. The rivet head 322 is used to be inserted into the deformable section 51, driving the deformable section 51 to expand and deform to be riveted to the hole wall of the mounting hole 43, and eliminating the gap 44; the first direction X intersects with the second direction Y; for example, the first direction X is perpendicular to the second direction Y.

[0066] The clamping device 31 may be a type of device capable of clamping, for example, the clamping device 31 may be a manipulator, a robot, etc. The clamping device 31 is used to clamp the faucet 5 and the current collector 4, so that the deformable section 51 of the faucet 5 is fixedly located in the mounting hole 43 of the side wall of the current collector 4, and there is a gap 44 between the deformable section 51 of the faucet 5 and the hole wall of the mounting hole 43.

[0067] In some examples, the first driving mechanism 321 may include a first sub-drive 3211 and a second sub-drive 3212, wherein the first sub-drive 3211 is connected to the second sub-drive 3212, and is used to drive the second sub-drive 3212 and the riveting head 322 to move in the first direction X. The second sub-drive 3212 is connected to the riveting head 322, and is used to drive the riveting head 322 to move in the second direction Y. The first sub-drive 3211 and the second sub-drive 3212 may be hydraulic cylinders, pneumatic cylinders, or electric telescopic rods. In other examples, the first driving mechanism 321 may be a three-dimensional telescopic mechanism, for example, a manipulator that can move in three directions perpendicular to each other.

[0068] The rivet head 322 may include a connecting portion 3221 and a head portion 3222; the connecting portion 3221 is connected to the first driving mechanism 321, and the connecting portion 3221 is connected to the head portion 3222. For example, the connecting portion 3221 is connected to the top of the head portion 3222. The shape of the head portion 3222 is conical, truncated cone or frustum. The connecting portion 3221 may be a connecting rod.

[0069] The control device 7 may be a device with control capability, for example, the control device 7 may include a controller 72, or the control device 7 may include a measuring component 71 and a controller 72. The controller 72 includes a control circuit. In some examples, the control device 7 may also detect indicators such as riveting force and riveting time.

[0070] In some examples, the maximum diameter of the head 3222 of the rivet head 322 is larger than the inner diameter of the deformable segment 51, for example, the head 3222 is truncated cone-shaped. During the process of inserting the rivet head 322 into the deformable segment 51, the rivet head 322 causes the deformable segment 51 to expand and deform to the hole wall of the mounting hole 43 by riveting, and eliminates the gap 44. In other examples, the diameter of the head 3222 of the rivet head 322 is smaller than the inner diameter of the deformable segment 51, and the diameter of the head 3222 is adjustable; after the rivet head 322 is inserted into the deformable segment 51, the diameter of the head 3222 of the rivet head 322 becomes larger, causing the deformable segment 51 to expand and deform to the hole wall of the mounting hole 43 by riveting, and eliminates the gap 44. The expansion and deformation of the deformable section 51 to the wall of the mounting hole 43 by riveting means that the deformable section 51 expands and deforms to the wall of the mounting hole 43 to form an interference fit; further, the end edge of the deformable section 51 can be turned outward.

[0071] The clamping device 31 and the riveting device 32 are installed on a base 33 .

[0072] The working principle of the riveting device 3 is as follows: the clamping device 31 clamps the water nozzle 5 and the current collector 4, so that the deformable section 51 of the water nozzle 5 is located in the mounting hole 43 of the side wall of the current collector 4, and there is a gap 44 between the deformable section 51 of the water nozzle 5 and the hole wall of the mounting hole 43. The control device 7 detects whether the width d of the gap 44 is less than or equal to the preset value. For example, if the width d of the gap 44 is less than or equal to the preset value, the control device 7 controls the first driving mechanism 321 to drive the riveting head 322 to extend from the nozzle of the current collector 4 into the current collector 4 along the first direction X, and drives the riveting head 322 to approach the deformable section 51 of the water nozzle 5 along the second direction Y, and insert it into the deformable section 51. The riveting head 322 drives the deformable section 51 to expand and deform to be riveted to the hole wall of the mounting hole 43, and eliminates the gap 44; so that the current collector 4 and the water nozzle 5 are connected together. For another example, if the width d of the gap 44 is greater than the preset value, the control device 7 does not drive the first driving mechanism 321 to operate. The control device 7 is connected to the alarm, and the control device 7 can control the alarm to sound an alarm, thereby reminding the user to adjust the water nozzle 5 or the current collector 4, or replace the water nozzle 5 or the current collector 4.

[0073] In this embodiment, the control device 7 and the first driving mechanism 321 cooperate so that the riveting device performs riveting connection on the water nozzle 5 and the current collector 4 when the width d of the gap 44 is less than or equal to a preset value; and does not perform riveting connection on the water nozzle 5 and the current collector 4 when the width d of the gap 44 is greater than the preset value. This can solve the problem of a gap between the water nozzle 5 and the current collector 4 after riveting connection due to the excessive width d of the gap 44, thereby improving the reliability of the riveting connection between the water nozzle 5 and the current collector 4, and further improving the yield of the riveting connection between the water nozzle 5 and the current collector 4.

[0074] In addition, the clamping device 31 can clamp the water nozzle 5 and the current collector 4 so that the relative positions of the water nozzle 5 and the current collector 4 are fixed, which is convenient for the riveting device 32 to perform riveting connection. The first driving mechanism 321 can make the rivet head 322 extend from the outside of the current collector 4 into the current collector 4, and the rivet head 322 can simply and efficiently rivet the water nozzle 5 and the current collector 4. Since the riveting connection will not cause problems such as deformation of the water nozzle 5, the reliability of the connection between the water nozzle 5 and the current collector 4 is improved, thereby improving the reliability of the battery device 1. After the current collector 4 and the water nozzle 5 are riveted, the shapes of the current collector 4 and the part of the water nozzle 5 located outside the current collector 4 do not change, so that the electrophoresis requirements are met after the current collector 4 and the water nozzle 5 are riveted.

[0075] In some embodiments, the control device 7 includes a controller 72 and a measuring component 71, and the controller 72 is electrically connected to the first driving mechanism 321 and the clamping device 31 respectively; the measuring component 71 is electrically connected to the controller 72, and is used to measure the width d of the gap 44; wherein the controller 72 is used to control the clamping device 31 to sleeve the mounting hole 43 of the current collector 4 on the deformable section 51 of the faucet 5; the controller 72 is also used to detect whether the width d of the gap 44 is less than or equal to a preset value, and in response to the width d of the gap 44 being less than or equal to the preset value, control the first driving mechanism 321 to drive the rivet head 322 to rivet the deformable section 51 of the faucet 5 and the current collector 4.

[0076] The controller 72 may be a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0077] The measuring component 71 may be a sensor, such as a distance sensor. The number of the measuring components 71 is one or more.

[0078] In some examples, the clamping device 31 clamps the water nozzle 5 and keeps it stationary; the clamping device 31 clamps the current collector 4 and moves the current collector 4 so that the mounting hole 43 of the current collector 4 is sleeved on the water nozzle 5. In other examples, the clamping device 31 clamps the current collector 4 and keeps it stationary; the clamping device 31 clamps the water nozzle 5 and moves the water nozzle 5 so that the mounting hole 43 of the current collector 4 is sleeved on the water nozzle 5.

[0079] In this embodiment, the cooperation between the measuring component 71 and the controller 72 can enable the first driving mechanism 321 and the clamping device 31 to automatically complete the riveting connection between the current collector 4 and the water nozzle 5, thereby improving the automation degree of the riveting equipment 3 and improving the work efficiency.

[0080] In some embodiments, there are multiple measuring components 71; the multiple measuring components 71 are spaced apart in a ring shape and are used to detect the width d at multiple positions of the gap 44; wherein the controller 72 controls the first driving mechanism 321 to drive the rivet head 322 to rivet the deformable section 51 of the faucet 5 and the current collector 4 in response to the width d at multiple positions of the gap 44 being less than or equal to a preset value.

[0081] The measuring assembly 71 may be disposed on the clamping device 31 to measure the width d of the gap 44 from the outside of the current collector 4. The measuring assembly 71 may also be disposed on the rivet head 322 to measure the width d of the gap 44 from the inside of the current collector 4. In some examples, a plurality of measuring assemblies 71 are distributed in a circular array.

[0082] In this embodiment, multiple measuring components 71 can measure the width d of the gap 44 at multiple positions; when the width d at multiple positions is less than or equal to the preset value, the riveting device 32 performs riveting connection on the current collector 4 and the water nozzle 5, thereby solving the problem that when the water nozzle 5 is offset relative to the mounting hole 43, the width d of the local gap 44 is too large, resulting in low reliability of the current collector 4 and the water nozzle 5 after riveting connection, thereby improving the yield of the current collector 4 and the water nozzle 5 after riveting connection.

[0083] In some embodiments, see Fig.11 The measuring component 71 is disposed on the riveting head 322 .

[0084] For example, the measuring assembly 71 can be installed on the head 3222 or the connecting portion 3221. Due to the bending section 52, it is difficult for the measuring assembly 71 to detect the width d of the gap 44 from outside the current collector, and the measuring assembly 71 needs to be installed and fixed by a special bracket.

[0085] In this embodiment, the measuring assembly 71 is disposed on the rivet head 322 , so that the measuring assembly 71 measures the width d of the gap 44 from the inside of the current collector 4 , thereby measuring the width d of the gap 44 more accurately and conveniently.

[0086] In some embodiments, see Fig.11 The rivet head 322 includes a connecting portion 3221 and a head portion 3222 which are connected to each other. One end of the connecting portion 3221 is connected to the first driving mechanism 321 . A plurality of measuring components 71 are arranged at the other end of the connecting portion 3221 and are arranged around the circumference of the head portion 3222 .

[0087] In some examples, the connection portion 3221 and the head portion 3222 are integrally formed. The connection portion 3221 and the head portion 3222 are distributed along the second direction Y and connected.

[0088] In this embodiment, multiple measuring components 71 are arranged at the other end of the connecting portion 3221, so that the multiple measuring components 71 can extend out of the current collector along with the connecting portion, thereby facilitating installation, maintenance, and replacement of the measuring components 71, and also reducing the risk of the measuring components being squeezed when arranged on the head 3222, and facilitating detection of the width d of the gap 44; thereby improving the yield rate of the current collector 4 and the faucet 5 after riveting. The multiple measuring components 71 are arranged circumferentially around the head 3222, so that the multiple measuring components 71 can detect the width d of the gap 44 at multiple positions.

[0089] In some embodiments, the preset value is 0.15 mm to 0.25 mm.

[0090] For example, the preset value may be 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.2mm, 0.21mm, 0.22mm, 0.23mm, 0.24mm, 0.25mm, etc.

[0091] In some embodiments, the control device 7 is also used to detect whether the rivet head 322 is aligned with the deformable section 51 of the faucet 5, and in response to the rivet head 322 being aligned with the deformable section 51 of the faucet 5, control the first drive mechanism 321 to drive the rivet head 322 to be inserted into the deformable section 51.

[0092] In some examples, by detecting whether the axis of the rivet head 322 coincides with the axis of the deformable section 51 of the faucet 5, it is reflected whether the rivet head 322 is aligned with the deformable section 51 of the faucet 5. Wherein, if the center line of the rivet head 322 coincides with the axis of the deformable section 51 of the faucet 5, the rivet head 322 is aligned with the deformable section 51 of the faucet 5. If the center line of the rivet head 322 does not coincide with the axis of the deformable section 51 of the faucet 5, the rivet head 322 is not aligned with the deformable section 51 of the faucet 5. For example, the measuring component 71 detects whether the distance between the axis of the rivet head 322 and the axis of the deformable section 51 of the faucet 5 is zero.

[0093] In this embodiment, the control device 7 is also used to detect whether the rivet head 322 is aligned with the deformable section 51 of the water nozzle 5, so that the deformation degree of the deformable section 51 in all directions is roughly the same, so that the yield of the current collector 4 and the water nozzle 5 after riveting connection is higher.

[0094] In some embodiments, the clamping device 31 includes a second driving mechanism, a first clamping mechanism 311 and a second clamping mechanism 312, the second clamping mechanism 312 is used to clamp the water nozzle 5; the first clamping mechanism 311 is used to clamp the current collector 4; the second driving mechanism is used to drive the first clamping mechanism 311 and / or the second clamping mechanism 312 to move, so that the mounting hole 43 of the current collector 4 is sleeved on the deformable section 51 of the water nozzle 5.

[0095] The first clamping mechanism 311 may be a robot, etc. The second clamping mechanism 312 may be a robot, etc. The second driving mechanism may be a hydraulic cylinder, a pneumatic cylinder, an electric telescopic rod, etc.

[0096] In some examples, the second driving mechanism drives the first clamping mechanism 311 and the second clamping mechanism 312 to move simultaneously. In other examples, the second driving mechanism drives the first clamping mechanism 311 to move, and the second clamping mechanism 312 does not move. In other examples, the second driving mechanism drives the second clamping mechanism 312 to move, and the first clamping mechanism 311 does not move.

[0097] In this embodiment, the cooperation of the second driving mechanism, the first clamping mechanism 311 and the second clamping mechanism 312 is used to realize automatic clamping of the current collector 4 and the water nozzle 5, and automatic assembly of the current collector 4 and the water nozzle 5, thereby reducing the workload and improving work efficiency.

[0098] In some embodiments, see Fig.10a and Fig.10b The second clamping mechanism 312 has two placement grooves 3121, each placement groove 3121 is used to place a water nozzle 5; the two placement grooves 3121 have different structures, so that the two placement grooves 3121 can only place water nozzles 5 with different structures.

[0099] In some examples, the two placement grooves 3121 may have different sizes, shapes, etc., which may make the structures of the two placement grooves 3121 different. For example, one placement groove 3121 is linear, and the other placement groove 3121 is curved. For another example, the two placement grooves 3121 are curved and symmetrically arranged. Among them, the two water nozzles 5 may be a water inlet nozzle and a water outlet nozzle, and have different structures.

[0100] In this embodiment, the two placement grooves 3121 have different structures, so that each placement groove 3121 can only hold the same type of water nozzle 5, ensuring that the water nozzle 5 is sleeved in the corresponding installation hole 43, thereby improving the reliability of the assembly of the water nozzle 5 and the current collector 4.

[0101] The above description is only an implementation method of the present application, and does not limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A riveting device, characterized in that: include: A clamping device, used for clamping the water nozzle and the current collector; The riveting device comprises a first driving mechanism and a riveting head; the first driving mechanism is connected to the riveting head and is used to drive the riveting head to move; A control device is connected to the first driving mechanism; the control device is used to detect whether the width of the gap between the deformable section of the water nozzle and the hole wall of the mounting hole of the current collector is less than or equal to a preset value, and in response to the width of the gap being less than or equal to the preset value, the control device controls the first driving mechanism to drive the rivet head to perform rivet connection between the deformable section of the water nozzle and the current collector.

2. The riveting equipment according to claim 1, characterized in that: The control device comprises: a controller, electrically connected to the first driving mechanism and the clamping device respectively; A measuring component, electrically connected to the controller, and used to measure the width of the gap; Wherein, the controller is used to control the clamping device to sleeve the mounting hole of the current collector on the deformable section of the faucet; the controller is also used to detect whether the width of the gap is less than or equal to the preset value, and in response to the width of the gap being less than or equal to the preset value, control the first driving mechanism to drive the rivet head to rivet the deformable section of the faucet and the current collector.

3. The riveting equipment according to claim 2, characterized in that: There are multiple measuring components; the multiple measuring components are spaced apart and arranged in a ring shape, and are used to detect the width of the gap at multiple positions; In which, in response to the width of the gap at multiple positions being less than or equal to the preset value, the controller controls the first driving mechanism to drive the rivet head to perform rivet connection between the deformable section of the faucet and the current collector.

4. The riveting equipment according to claim 2, characterized in that: The measuring assembly is arranged on the riveting head.

5. The riveting device according to claim 4, characterized in that: The rivet head includes a connecting portion and a head portion which are connected to each other, one end of the connecting portion is connected to the first driving mechanism; and a plurality of measuring components are arranged at the other end of the connecting portion and are arranged circumferentially around the head portion.

6. The riveting device according to any one of claims 1 to 5, characterized in that: The preset value is 0.15mm~0.25mm.

7. The riveting device according to any one of claims 1 to 5, characterized in that: The control device is also used to detect whether the rivet head is aligned with the deformable section of the faucet, and in response to the rivet head being aligned with the deformable section of the faucet, control the first driving mechanism to drive the rivet head to be inserted into the deformable section.

8. The riveting device according to any one of claims 1 to 5, characterized in that: The clamping device includes a second driving mechanism, a first clamping mechanism and a second clamping mechanism, the second clamping mechanism is used to clamp the water nozzle; the first clamping mechanism is used to clamp the current collector; the second driving mechanism is used to drive the first clamping mechanism and / or the second clamping mechanism to move, so as to set the mounting hole of the current collector on the deformable section of the water nozzle.

9. The riveting device according to claim 8, characterized in that: The second clamping mechanism has two placement grooves, each of which is used to place one faucet; the two placement grooves have different structures, so that the two placement grooves can only place faucets with different structures.

10. A battery production device, characterized in that: include: The riveting device according to any one of claims 1 to 9, wherein the riveting device is used to connect the water nozzle to the current collector by riveting to obtain a thermal management component; The assembly equipment is used to assemble the battery cell, the thermal management component and the battery box into a battery device.

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