Shaping head and battery shaping equipment

Abstract

The utility model discloses a shaping head and a battery cell shaping device, wherein the shaping head comprises: a heating device and a temperature measuring device. The temperature measuring device comprises a mounting piece and a temperature sensor, wherein the mounting piece is a heat-insulating structure, the mounting piece is connected to the heating device, the temperature sensor is connected to the mounting piece, and the temperature sensor is used to be connected to the battery cell by heat conduction to detect the temperature of the battery cell. Since the mounting piece is a heat-insulating structure, the influence of the heating device on the temperature sensor can be reduced, and the rapid loss of heat through the mounting piece can be avoided, thereby improving the detection accuracy of the temperature sensor on the battery cell temperature, thereby improving the performance of the battery cell.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a shaping head and a battery core shaping device. Background Art

[0002] During the battery cell processing, in order to ensure the performance of the battery cell, the temperature required for processing needs to be strictly controlled. For example, in some battery cell shaping equipment, a temperature sensor is required to detect the temperature of the battery cell. In some existing technologies, the battery cell is heated by a heating plate, and the temperature of the battery cell is usually determined by detecting the temperature of the heating plate. However, the temperature detected in this way deviates from the actual temperature of the battery cell, which leads to low performance of the processed battery cell. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a shaping head that can be used for shaping the surface of a battery cell, which can improve the temperature detection accuracy of the battery cell and thus improve the performance of the battery cell.

[0004] The utility model also provides a battery core shaping device comprising the shaping head.

[0005] The shaping head according to the first aspect of the present invention includes: a heating device and a temperature measuring device.

[0006] The temperature measuring device includes a mounting piece and a temperature sensor. The mounting piece is a heat-insulating structure. The mounting piece is connected to the heating device. The temperature sensor is connected to the mounting piece. The temperature sensor is used to be connected to the battery cell by heat conduction to detect the temperature of the battery cell.

[0007] The shaping head according to the embodiment of the utility model has at least the following beneficial effects:

[0008] In this embodiment, the temperature sensor is connected to the mounting part for thermal conduction connection with the battery cell to detect the temperature of the battery cell, wherein the mounting part is a heat-insulating structure, thereby reducing the influence of the heating device on the temperature sensor and preventing heat from being lost quickly through the mounting part, thereby improving the detection accuracy of the temperature sensor on the battery cell temperature and further improving the performance of the battery cell.

[0009] According to some embodiments of the present invention, the heating device includes an induction coil, and the induction coil is used to generate a changing magnetic field.

[0010] According to some embodiments of the present invention, the mounting member has a heat-insulating cavity, and the temperature sensor is located on a side of the heat-insulating cavity facing away from the heating device.

[0011] According to some embodiments of the present utility model, the mounting member includes a first insulation board and a second insulation board, the first insulation board is connected to the second insulation board, the insulation cavity is defined between the first insulation board and the second insulation board, the temperature sensor is connected to the first insulation board, and the second insulation board is connected to the heating device.

[0012] According to some embodiments of the present invention, a side of the first heat insulation board facing the second heat insulation board further has a wiring groove, and the wiring groove is used for allowing a wire to pass through and connect to the temperature sensor.

[0013] According to some embodiments of the utility model, the temperature sensor has a temperature measuring surface, the mounting member has a mounting groove and a notch connected to the mounting groove, the temperature sensor is arranged in the mounting groove, the temperature measuring surface is flush with the surface of the notch of the mounting member where the temperature measuring surface is located, and the temperature measuring surface is used to contact the battery cell.

[0014] According to some embodiments of the utility model, the mounting member has a mounting groove and a notch connected to the mounting groove, the temperature sensor is arranged in the mounting groove, the temperature measuring device also includes a temperature conductive member, the temperature sensor is connected to the temperature conductive member, and the surface of the temperature conductive member facing away from the temperature sensor is used to contact the battery cell.

[0015] According to some embodiments of the present invention, the thickness of the temperature conducting member is 0.1 mm to 1 mm.

[0016] According to some embodiments of the present invention, the mounting member further has a first accommodating groove, the size and shape of the first accommodating groove are adapted to the size and shape of the thermal conductive member, and the thermal conductive member is disposed in the first accommodating groove.

[0017] According to the second aspect of the present invention, a battery cell shaping device includes:

[0018] The two shaping heads described in the first aspect embodiment are distributed along the vertical direction, and at least one of the shaping heads can reciprocate along the vertical direction.

[0019] The battery cell shaping device according to the embodiment of the utility model has at least the following beneficial effects:

[0020] A shaping head according to the first aspect of the embodiment is adopted, and a temperature sensor in the shaping head is connected to a mounting part for heat conduction connection with the battery cell to detect the temperature of the battery cell, wherein the mounting part is a heat insulating structure, thereby reducing the influence of the heating device on the temperature sensor, and at the same time preventing heat from being lost quickly through the mounting part, thereby improving the detection accuracy of the temperature sensor for the battery cell temperature, thereby improving the detection accuracy of the temperature sensor for the battery cell temperature, thereby improving the performance of the battery cell.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a structural schematic diagram of a shaping head according to an embodiment of the first aspect of the utility model;

[0024] Figure 2 for Figure 1 A cross-sectional view of

[0025] Figure 3 for Figure 2 A magnified schematic diagram of the middle A area;

[0026] Figure 4 A cross-sectional view of another shaping head according to the first aspect of the present utility model;

[0027] Figure 5 A cross-sectional view of another shaping head according to the first aspect of the present utility model;

[0028] Figure 6 for Figure 5 Magnified view of area B;

[0029] Figure 7 This is a schematic structural diagram of a battery cell shaping device according to an embodiment of the second aspect of the utility model.

[0030] Reference numerals:

[0031] Plastic head 1000;

[0032] Heating device 100, support platform 110, heating element 120;

[0033] Temperature measuring device 200, mounting member 210, mounting groove 211, groove 2112, insulation cavity 212, first insulation board 213, wiring groove 2131, second insulation board 214, second insulation groove 2141, boss 2142, first accommodating groove 215, support column 216, temperature sensor 220, temperature measuring surface 221, and temperature conducting member 230. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments 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.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0036] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] During the battery cell processing, in order to ensure the performance of the battery cell, the temperature required for processing needs to be strictly controlled. For example, in some battery cell shaping equipment, a temperature sensor is required to detect the temperature of the battery cell. In some existing technologies, the battery cell is heated by a heating plate, and the temperature of the battery cell is usually determined by detecting the temperature of the heating plate. However, the temperature detected in this way deviates from the actual temperature of the battery cell, which leads to low performance of the processed battery cell.

[0040] Based on the above problems, the first embodiment of the utility model proposes a shaping head 1000, referring to Figure 1 and Figure 2 , Figure 1 This is a structural schematic diagram of a shaping head according to the first embodiment of the utility model. Figure 2 for Figure 1 The cross-sectional view of the shaping head 1000 of this embodiment includes: a heating device 100 and a temperature measuring device 200.

[0041] The heating device 100 includes a support platform 110 and a heating element 120. The heating element 120 is, for example, a heating rod, a thermal resistance wire or an induction coil. The heating element 120 is connected to the support platform 110 and is used to heat the battery cell. The temperature measuring device 200 includes a mounting member 210 and a temperature sensor 220. The mounting member 210 is a heat-insulating structure, such as a rock wool insulation board, a glass wool insulation board or a rubber-plastic insulation board. The mounting member 210 is connected to the heating device 100, and the temperature sensor 220 is connected to the mounting member 210. The temperature sensor 220 is used to be connected to the battery cell by thermal conduction to detect the temperature of the battery cell. For example, the temperature sensor 220 is directly connected to the battery cell, or the temperature sensor 220 is connected to the battery cell through a heat-conducting structure (such as a heat-conducting member 230 described below) so that the temperature of the battery cell is transferred to the temperature sensor 220. Specifically, since the mounting member 210 is a heat-insulating structure, the influence of the heating device 100 on the temperature sensor 220 can be reduced, and the rapid loss of heat through the mounting member 210 can be avoided, thereby improving the detection accuracy of the temperature sensor 220 on the battery cell temperature, thereby improving the performance of the battery cell.

[0042] It should be noted that, since the mounting member 210 is a heat-insulating structure, in order to ensure that the heating device 100 heats the battery cell normally, in some embodiments, the heating element 120 is a heating rod or an electric thermal resistance wire, and the heating plate or the electric thermal resistance wire needs to transfer heat with the battery cell to heat the battery cell. Therefore, the support table 110 has a second receiving groove, and the temperature measuring device 200 is arranged in the second receiving groove. Therefore, when the shaping head 1000 of this embodiment is used for battery cell shaping, the support table 110 can be in direct contact with the battery cell to heat the battery cell. However, it is understandable that, in this manner, if the temperature measuring device 200 protrudes out of the second receiving groove, the support table 110 will not be able to contact the battery cell, thereby affecting the heating of the battery cell. If the temperature measuring device 200 is located in the second receiving groove and the distance between the temperature measuring device 200 and the opening of the second receiving groove is greater than 0, the temperature measuring device 200 will not be able to contact the battery cell, thereby reducing the temperature detection accuracy. Therefore, in order to ensure that the temperature measuring device 200 can contact the battery cell and heat the battery cell normally, it is necessary to ensure that the surface of the temperature measuring device 200 that is used to contact the battery cell (such as the surface of the mounting member 210 or the surface of the heat conducting member 230 in the embodiment below) needs to be flush with the surface of the support table 110. As a result, higher requirements are placed on the processing accuracy of the support table 110 and the installation accuracy of the temperature measuring device 200, which will lead to an increase in the cost of the shaping head 1000. Based on this, in some embodiments, the heating device 100 includes a heating element 120, and the heating element 120 is an induction coil (such as Figure 2 As shown), the induction coil is used to be connected to an external variable power source (such as an alternating power source) to generate a variable magnetic field, thereby generating eddy currents inside the battery cell to generate heat, thereby achieving non-contact heating of the battery cell. As a result, there is no need for the support table 110 to contact the battery cell, which reduces the processing accuracy of the support table 110 and the installation accuracy of the temperature measuring device 200, thereby reducing the cost of the shaping head 1000 of this embodiment.

[0043] Furthermore, based on the above-mentioned embodiments, the support platform 110 and / or the mounting member 210 are made of insulating material, so that the changing magnetic field will not generate eddy currents inside the support platform 110 and the mounting member 210, that is, the magnetic energy will not be converted into electrical energy in the support platform 110 and the mounting member 210, thereby reducing the magnetic energy consumption, and then reducing the power consumption of the power supply, so as to save manufacturing costs.

[0044] In addition, it is understandable that when the support platform 110 and the mounting member 210 are both made of insulating materials, only the battery cell will generate heat during the battery cell shaping process, thereby improving the detection accuracy of the temperature sensor 220 on the battery cell temperature.

[0045] Reference Figure 2 and Figure 3 , Figure 3 for Figure 2In the enlarged schematic diagram of the area A in the middle, in some embodiments, the mounting member 210 has a heat-insulating cavity 212, and the temperature sensor 220 is located on the side of the heat-insulating cavity 212 facing away from the heating device 100. Specifically, for example, the mounting member 210 includes a first heat-insulating board 213 and a second heat-insulating board 214, the first heat-insulating board 213 is connected to the second heat-insulating board 214, the heat-insulating cavity 212 is defined between the first heat-insulating board 213 and the second heat-insulating board 214, the temperature sensor 220 is connected to the first heat-insulating board 213, and the second heat-insulating board 214 is connected to the heating device 100. Specifically, for example, the first insulation board 213 has a first insulation groove, the second insulation board 214 is connected to the first insulation board 213 and covers the first insulation groove to define the insulation cavity 212, or the second insulation board 214 has a second insulation groove 2141, the first insulation board 213 is connected to the second insulation board 214 and covers the second insulation groove 2141 to define the insulation cavity 212, or the first insulation board 213 has a first insulation groove, the second insulation board 214 has a second insulation groove 2141, the first insulation The heat plate 213 has a surface with a first insulation groove, which is connected to the surface of the second insulation plate 214 having a second insulation groove 2141 to define an insulation cavity 212, thereby forming air insulation between the heating device 100 and the temperature sensor 220. It can be understood that the thermal conductivity of air is approximately 0.026W / (mK), and its thermal conductivity is relatively low, which can provide good insulation and heat preservation effects, and can effectively prevent heat exchange with the insulation plate, thereby reducing heat loss and further improving the detection accuracy of the battery cell temperature.

[0046] Reference Figure 2 and Figure 3 In some embodiments, the first heat insulation board 213 has a wiring groove 2131 on the side facing the second heat insulation board 214. The wiring groove 2131 is used for the wire to pass through and connect to the temperature sensor 220, effectively preventing the wire from being damaged. In addition, the wiring groove 2131 is located on the side of the first heat insulation board 213 facing the second heat insulation board 214, that is, during the battery cell shaping process, the wiring groove 2131 is located on the side of the first heat insulation board 213 away from the battery cell, thereby reducing the temperature of the wire, thereby increasing the service life of the wire, and further reducing the maintenance cost of the shaping head 1000 of this embodiment.

[0047] In some embodiments, the mounting member 210 further includes a support column 216, one end of the support column 216 is connected to the wall of the heat insulation cavity 212 close to the temperature sensor 220, and the other end is connected to the wall of the heat insulation cavity 212 away from the temperature sensor 220, thereby improving the strength of the mounting member and preventing the heat insulation cavity 212 from collapsing. Figure 3As shown in the example, the second insulation board 214 has a second insulation groove 2141 , and the inner wall of the second insulation groove 2141 opposite to the first insulation board 213 also has a boss 2142 . When the second insulation board 214 is connected to the first insulation board 213 , the boss 2142 abuts against the first insulation board 213 .

[0048] Reference Figure 3 In some embodiments, the temperature sensor 220 has a temperature measuring surface 221, the mounting member 210 has a mounting groove 211 and a notch 2112 connected to the mounting groove 211, the temperature sensor 220 is arranged in the mounting groove 211, the temperature measuring surface 221 is flush with the surface where the notch 2112 of the mounting member 210 is located, and the temperature measuring surface 221 is used to contact the battery cell. Specifically, the temperature sensor 220 is in direct contact with the surface of the battery cell without the need for other heat-conducting parts for heat transfer (such as the heat-conducting part 230 described below), which can improve the detection accuracy of the temperature of the battery cell by the temperature sensor 220. However, it can be understood that the size of the temperature sensor 220 is relatively small compared to the size of the battery cell. Therefore, during the battery cell shaping process, if the temperature sensor 220 protrudes from the mounting groove 211, the temperature sensor 220 will form an indentation on the surface of the battery cell, or even damage the temperature sensor 220. If the temperature sensor 220 is located inside the mounting groove 211 and the distance from the notch is greater than 0, the battery cell will not be able to contact the battery cell during the battery cell shaping process. Based on this, in order to ensure that the temperature sensor 220 can contact the battery cell and does not form an indentation on the surface of the battery cell, the temperature measuring surface 221 of the temperature sensor 220 is flush with the surface where the notch 2112 of the mounting member 210 is located. Therefore, during the battery cell shaping process, the battery cell contacts the surface where the mounting member 210 is located and abuts against the temperature sensor 220.

[0049] It can be seen from the above embodiments that in order to ensure that the temperature sensor 220 can contact the battery cell and does not form an indentation on the surface of the battery cell, it is necessary to ensure that the temperature measuring surface 221 of the temperature sensor 220 is flush with the surface where the notch 2112 of the mounting member 210 is located, which requires higher requirements for the processing accuracy of the mounting groove 211 and the installation accuracy of the temperature sensor 220, thereby increasing the cost. Based on this, in some embodiments, the temperature measuring device 200 also includes a temperature conducting member 230, referring to Figure 4 , Figure 4This is a cross-sectional view of another shaping head of the first aspect of the utility model, wherein the temperature sensor 220 is connected to the thermal conductive member 230, and the surface of the thermal conductive member 230 facing away from the temperature sensor 220 is used to contact the battery cell. Specifically, during use, the size of the battery cell to be shaped can be made no larger than the size of the thermal conductive member 230. For example, if the battery cell is a square battery cell, the length and width of the thermal conductive member 230 are no smaller than the length and width of the battery cell, thereby reducing the pressure on the battery cell, thereby preventing indentations from appearing on the surface of the battery cell, and ensuring heat transfer between the battery cells, without the need to make the temperature measuring surface 221 of the temperature sensor 220 flush with the surface where the notch 2112 of the mounting member 210 is located as in the above-mentioned embodiment, thereby reducing the cost of the equipment.

[0050] Based on the above embodiment, the thickness of the thermal conductive member 230 is 0.1 mm to 1 mm. Specifically, it can be understood that the thermal conductive member 230 is used to transfer heat between the battery cell and the temperature sensor 220. Therefore, when the thermal conductive member 230 is thicker, the heat transfer capacity between the battery cell and the temperature sensor 220 will be reduced, and if the thermal conductive member 230 is too thin, the manufacturing difficulty will be increased and the thermal conductive member 230 will be easily broken. Therefore, in this embodiment, the thermal conductive member 230 is set within a suitable range, that is, the thickness of the thermal conductive member 230 is 0.1 mm to 1 mm.

[0051] In some embodiments, a relief space is further defined between the thermal conductive member 230 and the mounting member 210, and the temperature sensor 220 is connected to the thermal conductive member and is located in the relief hole, thereby preventing the temperature sensor 220 from being crushed. Specifically, for example, the temperature sensor 220 has a relief groove (such as the mounting groove 211 in the above embodiment), the inner wall of the relief groove and the surface of the thermal conductive member 230 form a relief space, or the surface of the thermal conductive member 230 has a relief groove, and the inner wall of the relief groove and the surface of the mounting member 210 define a relief space.

[0052] Reference Figure 5 and Figure 6 , Figure 5 This is a cross-sectional view of another shaping head according to the first embodiment of the utility model. Figure 6 for Figure 5 An enlarged view of area A in the middle. In some embodiments, the mounting member 210 also has a first receiving groove 215. The size and shape of the first receiving groove 215 are compatible with the size and shape of the thermal conductive member 230. The thermal conductive member 230 is arranged in the first receiving groove 215, so that the mounting member 210 can play a role in heat preservation and heat insulation for the thermal conductive member, thereby reducing heat loss through the thermal conductive member 230.

[0053] Reference Figure 7 , Figure 7The schematic diagram of the structure of the battery cell shaping device of the second embodiment of the utility model comprises: the shaping head 1000 described in the first embodiment, two shaping heads 1000 are arranged, the two shaping heads 1000 are distributed in the vertical direction, and at least one shaping head 1000 can move back and forth in the vertical direction, so as to realize the flattening of the surface of the battery cell. Specifically, the temperature sensor 220 in the shaping head 1000 is connected to the mounting member 210 for thermal conduction connection with the battery cell to detect the temperature of the battery cell, wherein the mounting member 210 is a heat-insulating structure, thereby reducing the influence of the heating device 100 on the temperature sensor 220, thereby improving the detection accuracy of the temperature sensor 220 on the battery cell temperature, thereby improving the performance of the battery cell.

[0054] It should be noted that, since this embodiment adopts all the technical features of the shaping head 1000 of the first embodiment, this embodiment has at least all the beneficial effects brought by the first embodiment, which will not be repeated here.

[0055] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. Shaping head, characterized in that, include: Heating device; The temperature measuring device comprises a mounting piece and a temperature sensor, wherein the mounting piece is a heat-insulating structure, the mounting piece is connected to the heating device, the temperature sensor is connected to the mounting piece, and the temperature sensor is used to be connected to the battery cell by heat conduction to detect the temperature of the battery cell.

2. The shaping head according to claim 1, characterized in that: The heating device comprises an induction coil, and the induction coil is used to generate a changing magnetic field.

3. The shaping head according to claim 2, characterized in that: The mounting member has a heat-insulating cavity, and the temperature sensor is located at a side of the heat-insulating cavity away from the heating device.

4. The shaping head according to claim 3, characterized in that: The mounting member includes a first insulation board and a second insulation board, the first insulation board is connected to the second insulation board, the insulation cavity is defined between the first insulation board and the second insulation board, the temperature sensor is connected to the first insulation board, and the second insulation board is connected to the heating device.

5. The shaping head according to claim 4, characterized in that: A side of the first heat insulation board facing the second heat insulation board also has a wiring groove, and the wiring groove is used for allowing a wire to pass through and connect to the temperature sensor.

6. The shaping head according to claim 1, characterized in that: The temperature sensor has a temperature measuring surface, the mounting member has a mounting groove and a notch connected to the mounting groove, the temperature sensor is arranged in the mounting groove, the temperature measuring surface is flush with the surface of the notch of the mounting member, and the temperature measuring surface is used to contact the battery cell.

7. The shaping head according to claim 1, characterized in that: The temperature measuring device further comprises a temperature conducting member, the temperature sensor is connected to the temperature conducting member, and a surface of the temperature conducting member facing away from the temperature sensor is used to contact the battery core.

8. The shaping head according to claim 7, characterized in that: The thickness of the thermal conductive member is 0.1 mm to 1 mm.

9. The shaping head according to claim 7, characterized in that: The mounting member also has a first accommodating groove, the size and shape of the first accommodating groove are matched with the size and shape of the thermal conductive member, and the thermal conductive member is arranged in the first accommodating groove.

10. Battery cell shaping equipment, characterized in that: include: Two shaping heads according to any one of claims 1 to 9, the two shaping heads are distributed in the vertical direction, and at least one shaping head can reciprocate in the vertical direction.

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