Powered roller control method

Abstract

The present invention provides a method for controlling a power-on roller, which is characterized by comprising the following steps: S1, transmitting a battery cell through a plurality of groups of power-on roller assemblies arranged at intervals along the transmission direction of the battery cell; S2, judging whether the battery cell is located between a first roller assembly and a second roller assembly of a group of the power-on roller assemblies, and if so, energizing the group of the power-on roller assemblies; if not, de-energizing the group of the power-on roller assemblies. The present invention controls the power-on and power-off states of each group of the power-on roller assemblies in real time according to the transmission position of the battery cell, thereby avoiding the power-on roller assemblies being always energized during the transmission of the battery cell, thereby preventing a short circuit caused by a short circuit.

Description

Technical Field

[0001] The invention relates to the technical field of battery sheet manufacturing, and in particular to a method for controlling a powered roller shaft. Background Art

[0002] In the laser sintering process of the battery cell, the battery cell is driven by the powered roller assembly and a reverse voltage is applied to the battery cell at the same time, thereby generating an induced current when the laser irradiates the battery cell, which plays a role similar to sintering and reduces the contact resistance of the battery cell.

[0003] However, when a reverse voltage is applied to the battery cell through the power roller assembly, if the battery cell leaves the transmission range of the power roller assembly, the upper and lower rollers of the power roller assembly may contact each other, thereby causing a short circuit.

[0004] In view of this, it is necessary to provide a powered roller shaft control method to solve the above technical problems. Summary of the invention

[0005] In order to achieve the above-mentioned purpose, the present invention provides a power-on roller control method, which comprises the following steps: S1, transmitting the battery cell through a plurality of groups of power-on roller assemblies arranged at intervals along the transmission direction of the battery cell; S2, determining whether the battery cell is located between a first roller assembly and a second roller assembly of a group of the power-on roller assemblies; if so, energizing the group of the power-on roller assemblies; if not, de-energizing the group of the power-on roller assemblies.

[0006] As a further improvement of the present invention, a laser radiation area is provided between two adjacent groups of the powered roller shaft assemblies, and further comprises:

[0007] Determine whether the battery cell is located in the laser radiation area. If so, jump to S2; if not, cut off the power to all the powered roller components.

[0008] As a further improvement of the present invention, it also includes judging whether the front end of the battery cell reaches the starting power-on position, if so, jumping to S2; if not, keeping all the power-on roller shaft components in the power-off state.

[0009] As a further improvement of the present invention, a laser radiation area is provided between two adjacent groups of the powered roller assemblies.

[0010] The starting energization position is located in the laser radiation area;

[0011] Alternatively, the starting energization position is located upstream of the laser irradiation zone, and the distance between the two is less than or equal to a first preset distance.

[0012] As a further improvement of the present invention, it also includes judging whether the rear end of the battery cell reaches the terminal power-off position, and if so, all the power-on roller shaft components are powered off; if not, jump to S2.

[0013] As a further improvement of the present invention, a laser radiation zone is provided between two adjacent groups of the powered roller shaft assemblies, and the distance between the end power-off position and the laser radiation zone is less than or equal to a second preset distance.

[0014] The present invention also provides another power-on roller control method, which includes the following steps: S1, transmitting the battery cell through a plurality of groups of power-on roller assemblies arranged at intervals along the transmission direction of the battery cell, and a laser radiation area is provided between two adjacent groups of the power-on roller assemblies; S2, judging whether the front end of the battery cell reaches the starting power-on position, and if so, switching all the power-on roller assemblies located upstream of the laser radiation area to the power-on state; if not, keeping all the power-on roller assemblies in the power-off state.

[0015] As a further improvement of the present invention, the starting energization position is located in the laser irradiation zone; or, the starting energization position is located upstream of the laser irradiation zone, and the distance between the two is smaller than a first preset distance.

[0016] As a further improvement of the present invention, it also includes judging whether the front end of the battery sheet reaches between the first roller assembly and the second roller assembly of the Nth group of the powered roller assembly located downstream of the laser radiation area;

[0017] If yes, switch the Nth group of powered roller shaft components to a powered state;

[0018] If not, keep the Nth group of powered roller shaft components in the power-off state.

[0019] As a further improvement of the present invention, it also includes judging whether the front end of the battery cell reaches the Nth power-on position, and if so, switching the Nth group of power-on roller shaft assemblies to the power-on state; if not, keeping the Nth group of power-on roller shaft assemblies in the power-off state.

[0020] The Nth power-on position is located downstream of the starting power-on position, all the power-on roller assemblies are arranged at equal intervals along the battery sheet transmission direction, the axis center distance between two adjacent groups of the power-on roller assemblies is L1, and the distance between the Nth power-on position and the starting power-on position is L1 / 2+*L1 or L1 / 2+ΔL+*L1;

[0021] Among them, 1≤N≤M and is a natural number, M is the number of the powered roller assemblies downstream of the laser radiation area, and ΔL is 1 / 8~1 / 10 of the roller diameter.

[0022] As a further improvement of the present invention, it also includes judging whether the battery sheet is located between the first roller assembly and the second roller assembly of the S group of the powered roller assembly upstream of the laser radiation area;

[0023] If yes, keep the powered roller assembly of group S powered on;

[0024] If not, switch the powered roller shaft assembly of group S to the power-off state.

[0025] As a further improvement of the present invention, it also includes judging whether the rear end of the battery sheet reaches the Sth power-off position; if so, switching the power-on roller shaft assembly of the Sth group to the power-off state; if not, keeping the power-on roller shaft assembly of the Sth group in the power-on state;

[0026] The S power-off position is located upstream of the starting power-on position, the axis center distance between two adjacent groups of the power-on roller shaft assemblies is L1, the length of the battery cell is L2, and the transmission distance of the battery cell from the starting power-on position to the S power-off position is L2-(D-S+1 / 2)*L1 or L2-(D-S+1 / 2)*L1-ΔL;

[0027] Among them, 1≤S≤D and is a natural number, D is the number of the powered roller assemblies upstream of the laser radiation area, and ΔL is 1 / 8~1 / 10 of the roller diameter.

[0028] As a further improvement of the present invention, it also includes judging whether the rear end of the battery cell reaches the end power-off position;

[0029] If yes, switching all the powered roller shaft components to a power-off state;

[0030] If not, keep all the powered roller assemblies located downstream of the laser irradiation zone powered on.

[0031] As a further improvement of the present invention, the distance between the end power-off position and the laser radiation area is smaller than a second preset distance.

[0032] As a further improvement of the present invention, a sensor for detecting the battery cell is also provided upstream of the laser radiation zone, and the time T=R / V for the front end of the battery cell to reach the starting energization position from the position of the sensor is calculated according to the distance R between the sensor and the starting energization position and the transmission speed V of the power-on roller assembly;

[0033] Determine whether the transmission time of the battery cell from the sensor reaches T; if so, the front end of the battery cell reaches the starting power-on position; if not, the front end of the battery cell does not reach the starting power-on position.

[0034] Beneficial effects of the present invention: The present invention controls the on / off state of each group of the power-on roller assembly in real time through the transmission position of the battery cell, thereby avoiding the power-on roller assembly being always in the power-on state during the transmission of the battery cell and causing a short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0036] Figure 1 It is a schematic diagram of the overall structure of the laser sintering assembly of the present invention;

[0037] Figure 2 It is a schematic structural diagram of the power roller assembly of the present invention;

[0038] Figure 3 It is a schematic diagram of a parallel circuit of a powered roller assembly of the present invention;

[0039] Figure 4 It is a schematic diagram of the non-equidistant arrangement of the powered roller shaft components of the present invention;

[0040] Figure 5 It is a schematic diagram of the equally spaced arrangement of the power-adding roller shaft components of the present invention;

[0041] Figure 6 A schematic diagram of the transmission from the front end of the battery cell to the location of the sensor;

[0042] Figure 7 A schematic diagram of the front end of the battery cell being transferred to the starting power-on position;

[0043] Figure 8 A schematic diagram of the front end of the battery sheet being transmitted to the power-on roller assembly 3;

[0044] Fig. 9 A schematic diagram of the front end of the battery sheet being transmitted to the power-on roller assembly 4;

[0045] Fig.10 A schematic diagram of the rear end of the battery sheet being transmitted to the power-on roller assembly 1;

[0046] Fig.11 It is a schematic diagram of the rear end of the battery sheet being transmitted to the power-on roller assembly 2;

[0047] Fig.12 A schematic diagram of the transmission from the rear end of the battery cell to the final power-off position;

[0048] Fig.13 It is the light spot scanning path diagram of the present invention;

[0049] Fig.14The light spot of the present invention is Fig.13 The scanning path shown is a schematic diagram of the movement trajectory on the battery cell and the scanned area when the scanning path is scanned in a loop. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0052] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0054] like Figures 1 to 3 The present invention provides a laser sintering component, which includes a laser component 301 for emitting laser to a battery cell B, a plurality of groups of powered roller components 302 for driving the battery cell B to move and applying a reverse voltage to the battery cell B, and a sensor 303 for detecting the battery cell B.

[0055] The laser assembly 301 is used to emit laser between two adjacent groups of the power roller assemblies 302, thereby forming a laser radiation zone Z between the two adjacent groups of the power roller assemblies 302. The laser irradiates the battery cell B to which the reverse voltage is applied. When the battery cell B passes through the laser radiation zone Z, an induced current is generated. When the current flows through the area with high contact resistance, a higher temperature is generated, which plays a role similar to sintering, thereby reducing the contact resistance.

[0056] The laser assembly 301 includes a laser source for emitting laser light and a shaping assembly for shaping the laser light into a square laser spot. The laser assembly 301 also includes a galvanometer and a field mirror. The galvanometer is used to receive the shaped laser spot and adjust the scanning position, scanning amplitude and scanning speed of the laser spot according to the scanning parameters. The field mirror is fixedly connected to the galvanometer and is used to focus the laser spot on the surface of the battery cell B. The square laser spot can scan and irradiate the entire battery cell B when the battery cell B moves.

[0057] In this embodiment, the laser assembly 301 is located above the power roller assembly 302 to radiate laser light from top to bottom on the battery cell B. Of course, in other embodiments, the laser assembly 301 may also be disposed below the power roller assembly 302 .

[0058] Reference Figure 13 to Figure 14 The laser emitted by the laser assembly 301 forms a light spot on the battery cell B, and the galvanometer is used to make the light spot perform multiple cycles of scanning along a preset scanning path.

[0059] In the transverse direction perpendicular to the front-rear direction, the two sides of the battery cell B are respectively the first side and the second side, and the transverse direction is Fig.13 The middle is the left and right direction, Fig.13 In the embodiment, the left side of the battery cell B is the first side, and the right side is the second side. In other embodiments, the right side of the battery cell B may be the first side, and the left side may be the second side.

[0060] The scanning path includes a first point from a first side O 1 Move to the second point on the second side O 2 The first path S1, from the second point O 2 Move back to the third point O 3 The second path S2 and the O 3 Move to the third path S3 of the first side. The scanning path is a closed loop path. O 1is the starting point and end point of the scanning path, that is, after the irradiation point moves from the second side to the first side along the third path S3, it will return to the first point O 1 .

[0061] The first path S1 extends obliquely from the back to the front or is parallel to the transverse direction, and the third path S3 extends obliquely from the back to the front.

[0062] In a specific embodiment, the third path S3 starts from the third point O 3 Move to first point O 1 In this way, the scanning path is triangular, and the light spot scans cyclically along the triangular scanning path.

[0063] Specifically, the first path S1 extends obliquely from the back to the front, and when the light spot moves along the first path S1, it not only moves from the first side to the second side in the transverse direction, but also moves forward a certain distance in the front-to-back direction. As described above, the third path S3 extends obliquely from the back to the front, and when the light spot moves along the third path S3, it not only moves from the second side to the first side in the transverse direction, but also moves forward a certain distance in the front-to-back direction.

[0064] First point O 1 And the second point O 2 Distance in the front and back directions and the third point O 3 And the first point O 1 The distance in the front and rear directions is equal to 0.5H. It can be imagined that in the above case, the second point O 2 And the third point O 3 The distance in the front-to-back direction is H. During the process of the light spot completing one scan, the distance that the battery cell B moves forward is H.

[0065] It can be seen that the lengths of the first path S1 and the third path S3 are equal. If the cell B moves forward at a constant speed, the distance H that the cell B moves forward during the process of the light spot completing a scan can be divided into: the distance H that the light spot moves forward from the first point along the first path S1 O 1 Move to the second point O 2 When the cell B moves forward by a distance of 0.5H, the light spot moves from the third point along the third path S3. O 3 Move to first point O 1When the light spot moves forward along the first path S1, the battery cell B moves forward by a distance of 0.5H. Since the light spot moves forward by a distance of 0.5H when it moves along the first path S1 and by a distance of 0.5H when it moves along the third path S3, the battery cell B moves synchronously with the light spot when the light spot moves along the first path S1 and the third path S3. Thus, when the light spot scans cyclically along the scanning path, the several strip-shaped areas scanned by the light spot on the battery cell B are parallel to the transverse direction and cover the battery cell B, and the light spot can basically scan all areas of the battery cell B. Fig.14 It is a schematic diagram of the movement track and the scanned area on the battery cell B when the light spot is scanned according to the scanning path of this embodiment.

[0066] Of course, in other embodiments, the first path S1 may also be parallel to the transverse direction, that is, the first point O 1 And the second point O 2 The distance in the front-to-back direction is 0, and the light spot moves along the first path S1, moving from the first side to the second side in the transverse direction, but its position in the front-to-back direction remains unchanged. O 3 And the first point O 1 The distance in the front-to-back direction is H, and the light spot moves along the third path S3, not only moving from the second side to the first side, but also moving forward a distance of H in the front-to-back direction.

[0067] A plurality of the power-on roller assemblies 302 are arranged at intervals along the transmission direction of the battery cell B, and can drive the battery cell B to move while applying a reverse voltage to the battery cell B. The power-on roller assembly 302 includes a first roller assembly 302a and a second roller assembly 302b arranged in the height direction, and the battery cell B is located between the first roller assembly 302a and the second roller assembly 302b. The first roller assembly 302a and / or the second roller assembly 302b can be driven to rotate by an external device such as a motor, thereby driving the battery cell B to move.

[0068] The first roller assembly 302a and the second roller assembly 302b are symmetrically arranged along the center line of the height direction of the power-on roller assembly 302. The first roller assembly 302a contacts the lower surface of the battery cell B, and the second roller assembly 302b contacts the upper surface of the battery cell B. The first roller assembly 302a and the second roller assembly 302b are respectively connected to the positive electrode and the negative electrode of the power source to apply a reverse voltage to the battery cell B while transmitting the battery cell B.

[0069] Each group of the powered roller shaft components 302 is connected in parallel, and each parallel circuit is connected in series with a relay 302c. The relay 302c controls the on and off of each parallel circuit, thereby individually controlling the on and off of each group of the powered roller shaft components 302.

[0070] The sensor 303 is located upstream of the laser assembly 301, and is used to detect the battery sheet B transmitted to the power roller assembly 302, so as to control the power on and off of each group of the power roller assembly 302 and the opening and closing of the laser assembly 301 according to the detection signal of the sensor 303. In this embodiment, the sensor 303 is a photoelectric sensor.

[0071] The present invention also provides a method for controlling an electrified roller shaft, which can be applied to the above-mentioned laser sintering component.

[0072] Embodiment 1, it comprises the following steps:

[0073] S1, transporting the battery cell B through a plurality of groups of powered roller assemblies 302 arranged at intervals along the transport direction of the battery cell B;

[0074] S2, determine whether the battery cell B is located between the first roller assembly 302a and the second roller assembly 302b of a group of the power-on roller assemblies 302, if so, power on the group of the power-on roller assemblies 302; if not, power off the group of the power-on roller assemblies 302.

[0075] In S2, when the battery cell B is located between the first roller assembly 302a and the second roller assembly 302b of a group of the powered roller assemblies 302, the battery cell B is in contact with the first roller assembly 302a and the second roller assembly 302b of the group of the powered roller assemblies 302 at the same time, and the group of the powered roller assemblies 302 is energized, and the first roller assembly 302a and the second roller assembly 302b will not come into contact to cause a short circuit.

[0076] When the battery cell B is not located between the first roller assembly 302a and the second roller assembly 302b of a group of the powered roller assemblies 302, and the battery cell B is not in contact with the first roller assembly 302a and the second roller assembly 302b of the group of the powered roller assemblies 302 at the same time, the power is cut off from the group of the powered roller assemblies 302 to avoid a short circuit caused by contact between the first roller assembly 302a and the second roller assembly 302b.

[0077] The “determining whether the battery cell B is located between the first roller assembly 302a and the second roller assembly 302b of a group of the power-on roller assembly 302” specifically includes:

[0078] When the front end of the battery cell B is transmitted to the position where the sensor 303 is located, the sensor 303 detects the battery cell B and records the time T1 at this time;

[0079] Based on the distance L between each group of the power-on roller assembly 302 and the sensor 303, the length L2 of the battery cell B, and the transmission speed V of the power-on roller assembly 302, the time required for the front end of the battery cell B to move to each group of the power-on roller assembly 302 and the time required for the rear end of the battery cell B to move away from each group of the power-on roller assembly 302 can be calculated, thereby determining whether the battery cell B is located between the first roller assembly 302a and the second roller assembly 302b of a group of the power-on roller assembly 302 based on the running time.

[0080] The method further includes determining whether the battery cell B is located in the laser radiation zone Z. If so, jump to S2; if not, power off all the powered roller assemblies 302.

[0081] The laser assembly 301 emits laser light between two adjacent groups of the powered roller assemblies 302 , thereby forming a laser radiation zone Z between the two adjacent groups of the powered roller assemblies 302 .

[0082] When the cell B is located in the laser irradiation zone Z, that is, the laser irradiates the cell B, the process jumps to S2, and at least part of the power-on roller assemblies 302 are powered on to apply a reverse voltage to the cell B. When the cell B is not located in the laser irradiation zone Z, that is, the laser does not irradiate the cell B, there is no need to apply a reverse voltage to the cell B, so all the power-on roller assemblies 302 are powered off.

[0083] Specifically, when the front end of the cell B is transmitted to the position of the sensor 303, the sensor 303 detects the cell B and records the time T1 at this time. According to the distance R1 between the laser irradiation zone Z and the sensor 303 and the transmission speed V of the powered roller assembly 302, the time ΔT when the front end of the cell B is transmitted from the position of the sensor 303 to the laser irradiation zone Z can be obtained. 通 =R1 / V, that is, T1+ΔT 通 It is the initial time when the battery cell B enters the laser radiation zone Z.

[0084] When the rear end of the cell B is transmitted away from the laser radiation zone Z, the transmission distance of the cell B is R1+L2. According to the transmission distance of the cell B and the transmission speed V of the powered roller assembly 302, the time ΔT required for the rear end of the cell B to be transmitted away from the laser radiation zone Z can be obtained. 断 = (R1+L2) / V, so that the end time of the cell B leaving the laser radiation zone Z can be obtained, that is, T1+ΔT断 It is the end time when the battery cell B leaves the laser irradiation zone Z.

[0085] At the initial time T1+ΔT 通 and end time T1+ΔT 断 Within, it can be confirmed that the battery cell B is located in the laser irradiation zone Z. At this time, the laser emitted by the laser assembly 301 irradiates the battery cell B, and at least part of the power roller assembly 302 needs to be powered on to apply a reverse voltage to the battery cell B.

[0086] The present invention also includes judging whether the front end of the battery cell B reaches the starting power-on position, if so, jumping to S2; if not, keeping all the power-on roller components 302 in the power-off state.

[0087] The starting energizing position is located in the laser irradiation zone Z. That is, when the front end of the battery cell B reaches the starting energizing position, the laser irradiates the front end of the battery cell B, and the process jumps to S2, and at least part of the power-on roller assembly 302 is energized to apply a reverse voltage to the battery cell B. When the front end of the battery cell B does not reach the starting energizing position, the laser does not irradiate the battery cell B, and at this time, there is no need to apply a reverse voltage to the battery cell B, so all the power-on roller assemblies 302 are de-energized.

[0088] Since the starting power-on position is located in the laser irradiation zone Z, the time for the front end of the cell B to be transmitted from the location of the sensor 303 to the starting power-on position is ΔT. 通 .

[0089] Of course, the starting energizing position may also be located upstream of the laser irradiation zone Z, and the distance between the two is less than or equal to the first preset distance, so as to energize the power-on roller assembly 302 in advance. The first preset distance is the distance between the laser irradiation zone Z and a group of the power-on roller assemblies 302 located upstream of the laser irradiation zone Z and closest to the laser irradiation zone Z.

[0090] The present invention also includes determining whether the rear end of the battery cell B reaches the terminal power-off position, and if so, powering off all the power-on roller assemblies 302; if not, jumping to S2.

[0091] The terminal power-off position is located in the laser irradiation zone Z, that is, the terminal power-off position coincides with the starting power-on position. That is, when the rear end of the battery cell B reaches the terminal power-off position, the battery cell B is transmitted away from the laser irradiation zone Z. At this time, there is no need to apply a reverse voltage to the battery cell B, so all the power-on roller assemblies 302 are powered off. If not, the process jumps to S2, and at least some of the power-on roller assemblies 302 are powered on to apply a reverse voltage to the battery cell B.

[0092] Since the terminal power-off position is located in the laser radiation zone Z, the time for the rear end of the battery cell B to be transmitted from the position where the sensor 303 is located to the terminal power-off position is ΔT. 断 .

[0093] Of course, the terminal power-off position may not be located in the laser irradiation zone Z, and the distance between the terminal power-off position and the laser irradiation zone Z only needs to be less than or equal to the second preset distance. The second preset distance is 0-5 mm.

[0094] Embodiment 2, it comprises the following steps:

[0095] S1, the battery cell B is transmitted by a plurality of groups of power roller assemblies 302 arranged at intervals along the transmission direction of the battery cell B, and a laser radiation zone Z is provided between two adjacent groups of the power roller assemblies 302;

[0096] S2. Determine whether the front end of the battery cell B reaches the starting power-on position. If so, switch all the power-on roller assemblies 302 located upstream of the laser radiation zone Z to the power-on state; if not, keep all the power-on roller assemblies 302 in the power-off state.

[0097] Specifically, a laser irradiation zone Z is provided between two adjacent powered roller assemblies 302 , D groups of powered roller assemblies 302 are provided upstream of the laser irradiation zone Z, and M groups of powered roller assemblies 302 are provided downstream of the laser irradiation zone Z.

[0098] It can be understood that when the front end of the battery cell B reaches the starting power-on position, all the power-on roller assemblies 302 located upstream of the laser radiation zone Z can be switched to the power-on state (i.e., the battery cell B is in contact with the first roller assembly 302a and the second roller assembly 302b of this part of the power-on roller assembly 302 at the same time); and all the power-on roller assemblies 302 located downstream of the laser radiation zone Z are kept in the power-off state (the battery cell B is not transmitted to the position of this part of the power-on roller assembly 302).

[0099] The position of the starting energization position, the distance between the starting energization position and the laser radiation zone Z, and the method for calculating the transmission time of the front end of the battery cell B to the starting energization position can be referred to the previous embodiment and will not be described in detail here.

[0100] As the battery cell B continues to be transported, the battery cell B is transported to the power-on roller assembly 302 located downstream of the laser irradiation zone Z. At this time, the power-on roller assembly 302 can be switched to a power-on state.

[0101] There are M groups of the power-on roller assemblies 302 downstream of the laser irradiation zone Z. It is determined whether the front end of the battery cell B reaches between the first roller assembly 302a and the second roller assembly 302b of the Nth group of the power-on roller assemblies 302 located downstream of the laser irradiation zone Z. If so, the Nth group of the power-on roller assemblies 302 are switched to the power-on state; if not, the Nth group of the power-on roller assemblies 302 are kept in the power-off state.

[0102] Specifically, M power-on positions are set downstream of the starting power-on position to correspond to M groups of the power-on roller assemblies 302. When the battery cell B moves to the Nth power-on position, the Nth group of the power-on roller assemblies 302 is switched to the power-on state.

[0103] Determine whether the front end of the battery cell B reaches the Nth power-on position;

[0104] If yes, switch the Nth group of powered roller components 302 to a powered state;

[0105] If not, keep the Nth group of powered roller shaft components 302 in a powered-off state;

[0106] In a specific embodiment, all the power-on roller assemblies 302 are arranged at equal intervals along the transmission direction of the battery cell B, the axis center distance between two adjacent groups of the power-on roller assemblies 302 is L1, the Nth power-on position is located downstream of the starting power-on position, and the distance between the two is L1 / 2+(N-1)*L1. Whether the front end of the battery cell B reaches the Nth power-on position is calculated based on the distance and the transmission speed V of the power-on roller assembly 302. Among them, 1≤N≤M is a natural number.

[0107] The cross-sections of the first roller assembly 302a and the second roller assembly 302b are circular. It can be understood that when the front end of the battery cell B reaches the middle position of the power-on roller assembly 302, the battery cell B contacts the first roller assembly 302a and the second roller assembly 302b at the same time.

[0108] When the front end of the battery cell B is transmitted from the starting energized position to the middle position of the first group of the power-on roller assembly 302 downstream of the laser irradiation zone Z, the transmission distance of the battery cell B is L1 / 2. By analogy, when the battery cell B is transmitted to the middle position of the second group of the power-on roller assembly 302 downstream of the laser irradiation zone Z, the transmission distance of the battery cell B is L1 / 2+L1; when the battery cell B is transmitted to the middle position of the Nth group of the power-on roller assembly 302 downstream of the laser irradiation zone Z, the transmission distance of the battery cell B is L1 / 2+(N-1)*L1. As the battery cell B is transmitted, the power-on roller assembly 302 is switched to the energized state in sequence.

[0109] It should be noted that, in order to ensure that when the power-on roller assembly 302 is switched to the power-on state, the battery cell B can contact the first roller assembly 302a and the second roller assembly 302b at the same time, thereby preventing the first roller assembly 302a and the second roller assembly 302b from directly contacting each other and causing a short circuit. When the transmission distance of the battery cell B is L1 / 2+ΔL+(N-1)*L1, the power-on roller assembly 302 is switched to the power-on state, that is, the power-on time of the power-on roller assembly 302 is delayed. Among them, ΔL is 1 / 8~1 / 10 of the roller diameter.

[0110] Of course, the axial center distances of each group of the power-on roller assemblies 302 may also be different. The time required for the front end of the battery cell B to reach the Nth power-on position can also be calculated based on the axial center distances of each group of the power-on roller assemblies 302 and the transmission speed V of the power-on roller assemblies 302.

[0111] As the battery cell B continues to be transported, the rear end of the battery cell B gradually separates from the powered roller assembly 302 located upstream of the laser irradiation zone Z. At this time, the powered roller assembly 302 needs to be switched to a power-off state.

[0112] There is a D group of power-on roller assemblies 302 upstream of the laser irradiation zone Z. It is determined whether the rear end of the battery cell B reaches between the first roller assembly 302a and the second roller assembly 302b of the S group of power-on roller assemblies 302 located upstream of the laser irradiation zone Z. If so, the power-on roller assembly 302 of the S group is switched to the power-off state; if not, the power-on roller assembly 302 of the S group is kept in the power-on state.

[0113] Specifically, D power-off positions are set upstream of the starting power-on position to correspond to the D groups of the power-on roller assemblies 302. When the battery cell B moves to the Sth power-off position, the Sth group of the power-on roller assemblies 302 is switched to the power-off state.

[0114] Determine whether the rear end of the battery cell B reaches the Sth power-off position;

[0115] If yes, switch the powered roller assembly 302 of the Sth group to a power-off state;

[0116] If not, keep the powered roller assembly 302 of the S group powered on;

[0117] The axis center distance between two adjacent groups of the power-on roller assemblies 302 is L1, the length of the battery cell B is L2, the Sth power-off position is located upstream of the starting power-on position, and the transmission distance of the battery cell B from the starting power-on position to the Sth power-off position is L2-(D-S+1 / 2)*L1. Whether the rear end of the battery cell B reaches the Sth power-off position is calculated based on the transmission distance and the transmission speed V of the power-on roller assembly 302. Among them, 1≤S≤D is a natural number.

[0118] It should be noted that, in order to ensure that the power-on roller assembly 302 is in the power-on state, the battery cell B can always be in contact with the first roller assembly 302a and the second roller assembly 302b at the same time, so as to prevent the first roller assembly 302a and the second roller assembly 302b from directly contacting each other and causing a short circuit. When the transmission distance of the battery cell B is L2-(D-S+1 / 2)*L1-ΔL, the power-on roller assembly 302 is switched to the power-off state, that is, the power-on roller assembly 302 is powered off in advance. Among them, ΔL is 1 / 8~1 / 10 of the roller diameter.

[0119] As the cell B is transported, the cell B is transported away from the laser irradiation zone Z. The location of the laser irradiation zone Z is also defined as the terminal power-off position.

[0120] Specifically, determining whether the rear end of the battery cell B reaches the end power-off position;

[0121] If yes, switch all the powered roller assemblies 302 to a power-off state;

[0122] If not, keep all the powered roller assemblies 302 located downstream of the laser irradiation zone Z powered on;

[0123] When the rear end of the battery cell B leaves the laser radiation zone Z, the laser emitted by the laser assembly 301 no longer radiates on the battery cell B. The laser completes the radiation scan of the battery cell B. At this time, all the powered roller assemblies 302 can be switched to the power-off state.

[0124] The powered roller control method of the present invention is described in detail below in conjunction with a specific embodiment.

[0125] Reference Figure 3 The power roller assembly 302 is provided with four groups at intervals along the transmission direction of the battery sheet B. The four groups of the power roller assembly 302 are connected in parallel with each other, and one group of the power roller assembly 302 is equipped with one relay 302c to control the power on and off of the power roller assembly 302.

[0126] For the convenience of description, along the transmission direction of the battery cell B, four groups of the power-on roller assemblies 302 are defined as power-on roller assembly 1, power-on roller assembly 2, power-on roller assembly 3 and power-on roller assembly 4.

[0127] The distance between two adjacent groups of the power roller assemblies 302 is the same, and the axis distance between two adjacent groups of the power roller assemblies 302 is L1. The power roller assemblies 302 drive the battery sheet B to move at a constant speed, and the transmission speed of the power roller assemblies 302 is V.

[0128] The laser emitted by the laser assembly 301 is located between the power roller assembly 2 and the power roller assembly 3. The sensor 303 is located between the power roller assembly 1 and the power roller assembly 2. The distance between the laser irradiation zone Z and the sensor 303 is also L1.

[0129] Reference Figure 5 In the initial state, the battery cell B has not entered the laser sintering area. At this time, the four groups of powered roller assemblies 302 are all in the power-off state.

[0130] Reference Figure 6 , the cell B is transported into the laser sintering area by an external transport device, and is transported to the location of the sensor 303 under the transport action of the power-on roller assembly 302. When the front end of the cell B reaches the location of the sensor 303, the sensor 303 detects the cell B and records the detection time T at this time. At this time, the front end of the cell B is located between the power-on roller assembly 1 and the power-on roller assembly 2.

[0131] Reference Figure 7 , the power roller assembly 302 continues to transmit the battery cell B. When the front end of the battery cell B reaches the radiation area of ​​the laser emitted by the laser assembly 301, the power roller assembly 1 and the power roller assembly 2 are switched to the power-on state. That is, the power roller assembly 1 and the power roller assembly 2 apply a reverse voltage to the battery cell B. At the same time, the laser assembly 301 can be turned on to emit laser to the battery cell B.

[0132] The front end of the battery cell B is transmitted from the location of the sensor 303 to the radiation area of ​​the laser, and the transmission distance of the battery cell B is the axis distance L1. According to the transmission distance and the transmission speed V of the power-on roller assembly 302, the transmission time ΔT1=L1 / V is calculated, that is, after the sensor 303 detects the battery cell B, the power-on roller assembly 1 and the power-on roller assembly 2 are switched to the power-on state at an interval of ΔT1.

[0133] Reference Figure 8, the power-on roller assembly 302 continues to transport the battery cell B, and when the front end of the battery cell B contacts the first roller assembly 302a and the second roller assembly 302b of the power-on roller assembly 3 at the same time, the power-on roller assembly 3 is switched to the power-on state. That is, a reverse voltage is applied to the battery cell B through the power-on roller assembly 1, the power-on roller assembly 2 and the power-on roller assembly 3.

[0134] The cross-sections of the first roller assembly 302a and the second roller assembly 302b are circular. It can be understood that when the front end of the battery cell B reaches the middle position of the power-on roller assembly 3, the battery cell B contacts the first roller assembly 302a and the second roller assembly 302b at the same time. At this time, the transmission distance of the battery cell B is L1 / 2. According to the transmission distance and the transmission speed V of the power-on roller assembly 302, the transmission time ΔT2=L1 / 2V is calculated, that is, after switching the power-on roller assembly 1 and the power-on roller assembly 2 to the power-on state, the power-on roller assembly 3 is switched to the power-on state at an interval of ΔT2.

[0135] To ensure that when the power-on roller assembly 3 is switched to the power-on state, the battery cell B can contact the first roller assembly 302a and the second roller assembly 302b at the same time, thereby preventing the first roller assembly 302a and the second roller assembly 302b from directly contacting each other and causing a short circuit. When the transmission distance of the battery cell B is L1 / 2+ΔL, the power-on roller assembly 3 is switched to the power-on state, that is, the power-on time of the power-on roller assembly 3 is delayed. The transmission time ΔT2 is calculated based on the adjusted transmission distance. Among them, ΔL is 1 / 8~1 / 10 of the roller diameter.

[0136] Reference Fig. 9 , the power-on roller assembly 302 continues to transport the battery cell B, and when the front end of the battery cell B contacts the first roller assembly 302a and the second roller assembly 302b of the power-on roller assembly 4 at the same time, the power-on roller assembly 4 is switched to the power-on state. That is, the power-on roller assembly 1, the power-on roller assembly 2, the power-on roller assembly 3 and the power-on roller assembly 4 apply a reverse voltage to the battery cell B.

[0137] When the front end of the battery cell B is transmitted from the middle position of the power-on roller assembly 3 to the middle position of the power-on roller assembly 4, the transmission distance of the battery cell B is the axis distance L1. According to the transmission distance and the transmission speed V of the power-on roller assembly 302, the transmission time ΔT3=L1 / V is calculated, that is, after switching the power-on roller assembly 3 to the power-on state, the power-on roller assembly 4 is switched to the power-on state at an interval of ΔT3.

[0138] Reference Fig.10, the power-on roller assembly 302 continues to transport the battery cell B, and when the rear end of the battery cell B is separated from the first roller assembly 302a and the second roller assembly 302b of the power-on roller assembly 1, the power-on roller assembly 1 is switched to the power-off state. That is, the power-on roller assembly 2, the power-on roller assembly 3 and the power-on roller assembly 4 apply a reverse voltage to the battery cell B.

[0139] The length of the battery cell B is L2. The transmission distance of the battery cell B from the front end of the battery cell B to the position of the sensor 303 to the rear end of the battery cell B to the middle position of the power roller assembly 1 is L2-L1 / 2. According to the transmission distance and the transmission speed V of the power roller assembly 302, the transmission time ΔT4=(L2-L1 / 2) / V is calculated, that is, after the sensor 303 detects the battery cell B, the power roller assembly 1 is switched to the power-off state at an interval of ΔT4. The power-on time of the power roller assembly 1 is ΔT4-ΔT1.

[0140] To ensure that the power-on roller assembly 1 is in the power-on state, the battery cell B can always be in contact with the first roller assembly 302a and the second roller assembly 302b at the same time, so as to prevent the first roller assembly 302a and the second roller assembly 302b from directly contacting each other and causing a short circuit. When the transmission distance of the battery cell B is L2-L1 / 2-ΔL, the power-on roller assembly 1 is switched to the power-off state, that is, the power-on roller assembly 1 is powered off in advance. The transmission time ΔT4 is calculated based on the adjusted transmission distance. Among them, ΔL is 1 / 8~1 / 10 of the roller diameter.

[0141] Reference Fig.11 , the power-on roller assembly 302 continues to transport the battery cell B, and when the rear end of the battery cell B is separated from the first roller assembly 302a and the second roller assembly 302b of the power-on roller assembly 2, the power-on roller assembly 2 is switched to the power-off state. That is, the power-on roller assembly 3 and the power-on roller assembly 4 apply a reverse voltage to the battery cell B.

[0142] When the rear end of the battery cell B is transmitted from the middle position of the power roller assembly 1 to the middle position of the power roller assembly 2, the transmission distance of the battery cell B is the axis distance L1. According to the transmission distance and the transmission speed V of the power roller assembly 302, the transmission time ΔT5=L1 / V is calculated, that is, after switching the power roller assembly 1 to the power-off state, the power roller assembly 2 is switched to the power-off state at an interval of ΔT5. The power-on time of the power roller assembly 2 is ΔT4+ΔT5-ΔT1.

[0143] Reference Fig.12, the power roller assembly 302 continues to transport the cell B. When the rear end of the cell B leaves the radiation area of ​​the laser emitted by the laser assembly 301, the power roller assembly 3 and the power roller assembly 4 are switched to the power-off state. That is, all four groups of the power roller assemblies 302 are in the power-off state. At the same time, the laser assembly 301 can be turned off to stop emitting laser to the cell B.

[0144] When the rear end of the cell B is transmitted from the middle position of the power roller assembly 2 to outside the radiation area of ​​the laser emitted by the laser assembly 301, the transmission distance of the cell B is the axis distance L1 / 2. According to the transmission distance and the transmission speed V of the power roller assembly 302, the transmission time ΔT6=L1 / 2V is calculated, that is, after switching the power roller assembly 2 to the power-off state, the power roller assembly 3 and the power roller assembly 4 are switched to the power-off state at an interval of ΔT6.

[0145] It should be noted that, if the power-on roller assembly 1 is turned off in advance, when the rear end of the battery cell B is transmitted from the middle position of the power-on roller assembly 2 to outside the radiation area of ​​the laser emitted by the laser assembly 301, the transmission distance of the battery cell B is L1 / 2+ΔL.

[0146] Finally, the powered roller assembly 302 continues to transport the cell B until the sintered cell B is transported out of the laser sintering area. The next cell B to be sintered is transported into the laser sintering area, and then the above steps are repeated to sinter the cell B.

[0147] Of course, the sensor 303 can also be set at the upstream position of the power-on roller assembly 1, and the time interval for switching the power-on roller assembly 1 and the power-on roller assembly 2 to the power-on state can be determined according to the distance between the sensor 303 and the radiation area of ​​the laser.

[0148] The spacing between the power roller assemblies 302 may also be different. Figure 4 , the axial center distance between the power-on roller assembly 1 and the power-on roller assembly 2 is L1, the axial center distance between the power-on roller assembly 3 and the power-on roller assembly 4 is L1, and the axial center distance between the power-on roller assembly 2 and the power-on roller assembly 3 is greater than L1, thereby reserving sufficient spacing for laser radiation on the battery cell B. According to the axial center distance between the power-on roller assembly 2 and the power-on roller assembly 3, the on-off time of each group of the power-on roller assembly 302 is adaptively adjusted. Since the on-off control logic is the same, it will not be repeated here.

[0149] In summary, the present invention controls the on / off state of each group of the power roller assembly 302 in real time through the transmission position of the battery cell B, thereby preventing the power roller assembly 302 from being always in the power-on state during the transmission of the battery cell B and causing a short circuit.

[0150] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0151] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for controlling a powered roller shaft, characterized in that: The steps include: S1, transporting the battery sheet through a plurality of groups of powered roller assemblies (302) arranged at intervals along the transmission direction of the battery sheet; S2, determining whether the battery cell is located between a first roller assembly (302a) and a second roller assembly (302b) of a group of powered roller assemblies (302); if so, powering on the group of powered roller assemblies (302); if not, powering off the group of powered roller assemblies (302).

2. The method for controlling a powered roller shaft according to claim 1, characterized in that: A laser radiation area is provided between two adjacent groups of the powered roller shaft assemblies (302), and further comprises: Determine whether the battery cell is located in the laser radiation area, if so, jump to S2; if not, cut off the power to all the powered roller components (302).

3. The method for controlling a powered roller shaft according to claim 1, characterized in that: It also includes judging whether the front end of the battery sheet reaches the starting power-on position, if so, jumping to S2; if not, keeping all the power-on roller shaft components (302) in the power-off state.

4. The method for controlling the powered roller axis according to claim 3, characterized in that: A laser radiation area is provided between two adjacent groups of the powered roller shaft assemblies (302). The starting energization position is located in the laser radiation area; Alternatively, the starting energization position is located upstream of the laser irradiation zone, and the distance between the two is less than or equal to a first preset distance.

5. The method for controlling a powered roller shaft according to claim 1, characterized in that: It also includes judging whether the rear end of the battery cell has reached the terminal power-off position, and if so, powering off all the power-on roller shaft components (302); if not, jumping to S2.

6. The method for controlling the powered roller axis according to claim 5, characterized in that: A laser radiation zone is provided between two adjacent groups of the powered roller shaft assemblies (302), and the distance between the end power-off position and the laser radiation zone is less than or equal to a second preset distance.

7. A method for controlling a powered roller shaft, characterized in that: The steps include: S1, transporting the battery sheet through a plurality of groups of powered roller assemblies (302) arranged at intervals along the transmission direction of the battery sheet, wherein a laser radiation area is provided between two adjacent groups of powered roller assemblies (302); S2, judging whether the front end of the battery sheet has reached the starting power-on position, and if so, switching all the power-on roller assemblies (302) located upstream of the laser radiation zone to a power-on state; if not, keeping all the power-on roller assemblies (302) in a power-off state; The method also includes determining whether the rear end of the battery sheet is located between the first roller assembly (302a) and the second roller assembly (302b) of the Sth group of the power-on roller assembly (302) upstream of the laser radiation zone; If yes, keep the powered roller shaft assembly (302) of the S group powered on; If not, switching the powered roller shaft assembly (302) of the S group to a powered-off state; Wherein, the starting energization position is located in the laser radiation area; Alternatively, the starting energization position is located upstream of the laser irradiation zone, and the distance between the two is smaller than a first preset distance.

8. The method for controlling a powered roller shaft according to claim 7, characterized in that: The method further includes determining whether the front end of the battery sheet reaches between the first roller assembly (302a) and the second roller assembly (302b) of the Nth group of the powered roller assembly (302) located downstream of the laser radiation zone, If yes, switching the Nth group of powered roller shaft components (302) to a powered state; If not, keep the Nth group of powered roller shaft components (302) in a powered-off state.

9. The method for controlling a powered roller shaft according to claim 7, characterized in that: It also includes judging whether the front end of the battery sheet reaches the Nth power-on position, and if so, switching the Nth group of power-on roller shaft components (302) to a power-on state; if not, keeping the Nth group of power-on roller shaft components (302) in a power-off state; The Nth power-on position is located downstream of the starting power-on position, all the power-on roller assemblies (302) are arranged at equal intervals along the battery sheet transmission direction, the axis center distance between two adjacent groups of the power-on roller assemblies (302) is L1, and the distance between the Nth power-on position and the starting power-on position is L1 / 2+(N-1)*L1 or L1 / 2+ΔL+(N-1)*L1; Wherein, 1≤N≤M is a natural number, M is the number of the powered roller assemblies (302) downstream of the laser radiation zone, and ΔL is 1 / 8 to 1 / 10 of the roller diameter.

10. The method for controlling a powered roller shaft according to claim 7, characterized in that: It also includes judging whether the rear end of the battery sheet reaches the Sth power-off position, and if so, switching the Sth group of power-on roller shaft components (302) to the power-off state; if not, keeping the Sth group of power-on roller shaft components (302) in the power-on state; The Sth power-off position is located upstream of the starting power-on position, the axis center distance between two adjacent groups of the power-on roller shaft assemblies (302) is L1, the length of the battery sheet is L2, and the transmission distance of the battery sheet from the starting power-on position to the Sth power-off position is L2-(D-S+1 / 2)*L1 or L2-(D-S+1 / 2)*L1-ΔL; Wherein, 1≤S≤D is a natural number, D is the number of the powered roller assemblies (302) upstream of the laser radiation zone, and ΔL is 1 / 8 to 1 / 10 of the roller diameter.

11. The method for controlling a powered roller shaft according to claim 7, characterized in that: It also includes determining whether the rear end of the battery cell has reached the end power-off position; If yes, switching all the powered roller shaft components (302) to a power-off state; If not, all the powered roller assemblies (302) located downstream of the laser irradiation zone are kept powered on.

12. The method for controlling a powered roller shaft according to claim 11, characterized in that: The distance between the end power-off position and the laser radiation area is smaller than a second preset distance.

13. The method for controlling a powered roller shaft according to claim 7, characterized in that: A sensor (303) for detecting the battery cell is also provided upstream of the laser radiation zone, and the time T = R / V for the front end of the battery cell to reach the starting energization position from the position of the sensor (303) is calculated based on the distance R between the sensor (303) and the starting energization position and the transmission speed V of the power-on roller assembly (302); Determining whether the transmission time of the battery cell from the sensor (303) reaches T; If yes, the front end of the battery cell reaches the starting power-on position; If not, the front end of the battery cell has not reached the starting energization position.

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