Battery monomer heating device and battery production line

Abstract

The utility model relates to the technical field of battery production, in particular to a battery monomer heating device and a battery production line. The battery monomer heating device comprises a battery monomer heating assembly, the battery monomer heating assembly comprises a clamp part, the clamp part comprises two first clamps, and the two first clamps are arranged at the two ends of the clamp part in the first direction respectively; each first clamp is provided with a first inlet and a first outlet, a first flow channel communicated with the first inlet and the first outlet is arranged in the first clamp, each first clamp comprises a first clamping part, a first connecting part and a second connecting part, the first clamping part is used for clamping and heating the single battery, and the second clamping part is used for clamping and heating the single battery; the first connecting part and the second connecting part are connected with the two ends, in the second direction, of the first clamping part correspondingly, the first connecting part and the second connecting part are each of a hollow structure, and a flow guide part is arranged in at least one of the first connecting part and the second connecting part; wherein the first direction is the length direction or the width direction of the clamp part.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a battery monomer heating device and a battery production line. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] During the battery production process, the battery cells need to be heated. Usually, the battery cells are clamped by a clamp and heated by air blowing or a bottom plate. However, this heating method has a low heating efficiency for the battery cells and the battery cells heat up slowly. Utility Model Content

[0004] In view of the above problems, the embodiments of the present application provide a battery cell heating device and a battery production line, which solve the problem of low heating efficiency of battery cells by the battery cell heating device in the prior art.

[0005] A first aspect of an embodiment of the present application proposes a battery cell heating device, which includes a battery cell heating assembly, which includes a clamp component, which includes two first clamps, and the two first clamps are respectively arranged at both ends of the clamp component along a first direction; each first clamp is provided with a first inlet and a first outlet, and a first flow channel connecting the first inlet and the first outlet is provided in the first clamp, and each first clamp includes a first clamping part, a first connecting part and a second connecting part, the first clamping part is used to clamp and heat the battery cell, the first connecting part and the second connecting part are respectively connected to the two ends of the first clamping part along the second direction, and the first connecting part and the second connecting part are both hollow structures, and a flow guide is arranged inside at least one of the first connecting part and the second connecting part; wherein the first direction is the length direction or the width direction of the clamp component, and the second direction intersects with the first direction.

[0006] The embodiment of the present application is provided with a clamp component, wherein the clamp component includes two first clamps arranged at both ends of the clamp component along a first direction, each first clamp is provided with a first inlet and a first outlet, and a first flow channel connecting the first inlet and the first outlet is provided in the first clamp, and each first clamp includes a first clamping portion, a first connecting portion and a second connecting portion, the first clamping portion is used to clamp and heat the battery cell, and a guide member is provided inside at least one of the first connecting portion and the second connecting portion. After the high-temperature liquid is injected into the first clamp, the battery cell can be clamped and heated by the first clamping portion, thereby improving the heating efficiency of the battery cell.

[0007] In some embodiments of the present application, a first inlet is provided on the first connecting portion, and a first outlet is provided on the second connecting portion.

[0008] In the embodiment of the present application, by providing a first inlet on the first connecting portion and a first outlet on the second connecting portion, the clamping and heating functions of the first clamping portion will not be affected, thereby facilitating heating of the battery cell.

[0009] In some embodiments of the present application, the guide member includes a first partition plate, the first partition plate is arranged inside the second connecting portion, and a first through hole is provided on the first partition plate.

[0010] In the embodiment of the present application, a first partition for guiding the flow of fluid is provided in the second connection part, and a first through hole is provided on the first partition, so that the flow direction of the fluid can be guided so that the heat is evenly distributed in the second connection part.

[0011] In some embodiments of the present application, along the vertical direction, the second connecting part includes a first part and a second part, the second part is arranged below the first part and is provided with a first outlet, and the first partition includes a third part and a fourth part along the vertical direction, the third part is arranged above the fourth part and is provided with a first through hole, and the vertical direction intersects with both the first direction and the second direction.

[0012] In the embodiment of the present application, a first outlet is provided at the second portion of the second connecting portion along the vertical direction, and a first through hole is provided at the third portion of the first partition along the vertical direction. This allows the fluid to pass through the first through hole located in the upper half of the first partition along the vertical direction and then flow out from the first outlet, so that heat is evenly distributed in the second connecting portion along the vertical direction, thereby allowing the heat to be evenly distributed within the second clamping portion, thereby achieving uniform heating of the battery cell.

[0013] In some embodiments of the present application, the clamp component also includes at least one second clamp, and the at least one second clamp is arranged between two first clamps; the second clamp includes a second clamping portion, the second clamping portion is a hollow structure, and the second clamping portion is connected to the first flow channel; a first accommodating space is provided between the second clamping portion and the first clamping portion; and / or, the number of second clamps is multiple, and a second accommodating space is provided between two adjacent second clamping portions, the first accommodating space and the second accommodating space are both used to place battery cells, and the surface of the battery cell with the largest area is in contact with the first clamping portion and / or the second clamping portion.

[0014] The embodiments of the present application add at least one second clamp between two first clamps, and the second clamp includes a second clamping portion, the second clamping portion is a hollow structure, and the second clamping portion is connected to the first flow channel. It is possible to place multiple battery cells through the first accommodating space and / or the second accommodating space, thereby being able to heat multiple battery cells simultaneously and improving the production efficiency of the battery cells.

[0015] In some embodiments of the present application, the second clamp includes a third connecting part and a fourth connecting part, which are respectively connected to the two ends of the second clamping part along the second direction, and the third connecting part and the fourth connecting part are both hollow structures, wherein the third connecting part is provided with a second inlet, and the second inlet is connected to a first clamp, and the fourth connecting part is provided with a second outlet, and the second outlet is connected to another first clamp.

[0016] In the embodiment of the present application, a third connecting part and a fourth connecting part are provided, and the third connecting part and the fourth connecting part are respectively connected to the two ends of the second clamping part along the second direction, and the third connecting part and the fourth connecting part are both hollow structures, wherein a second inlet is provided on the third connecting part, and a second outlet is provided on the fourth connecting part, which will not affect the clamping and heating functions of the second clamping part, thereby facilitating the heating of the battery cell.

[0017] In some embodiments of the present application, a second partition for guiding the flow of fluid is provided in the fourth connecting portion, and a second through hole is provided on the second partition.

[0018] In the embodiment of the present application, a second partition for guiding the flow of fluid is provided in the fourth connection part, and a second through hole is provided on the second partition, so that the flow direction of the fluid can be guided so that the heat is evenly distributed in the fourth connection part.

[0019] In some embodiments of the present application, the fourth connecting portion includes a first upper half and a first lower half along the vertical direction, the first lower half is arranged below the first upper half and is provided with a second outlet, and the second partition includes a second upper half and a second lower half along the vertical direction, the second upper half is arranged above the second lower half and is provided with a second through hole.

[0020] In the embodiment of the present application, a second outlet is provided at the first lower half of the fourth connecting part along the vertical direction, and a second through hole is provided at the second upper half of the second partition along the vertical direction. This allows the fluid to pass through the second through hole located in the upper half of the second partition along the vertical direction and then flow out from the second outlet, so that heat is evenly distributed in the fourth connecting part along the vertical direction, thereby allowing the heat to be evenly distributed within the fourth clamping part, thereby achieving uniform heating of the battery cell.

[0021] In some embodiments of the present application, a heat transfer structure is disposed inside at least one of the first clamping portion and the second clamping portion.

[0022] In the embodiment of the present application, a heat transfer structure is provided inside at least one of the first clamping portion and the second clamping portion, so that the efficiency of heat transfer can be improved and the heating speed of the battery cell can be increased.

[0023] In some embodiments of the present application, the heat transfer structure includes heat transfer fins, and the heat transfer fins extend along the second direction.

[0024] In the embodiment of the present application, the heat transfer structure includes heat transfer fins, wherein the heat transfer fins extend along the second direction, so that the heat transfer fins can quickly transfer the heat of the high-temperature fluid to the battery cell, thereby improving the heating efficiency of the battery cell. In addition, the heat transfer fins can also increase the strength of the first clamping portion, or the heat transfer structure can also increase the strength of the second clamping portion.

[0025] In some embodiments of the present application, the second fixture is further provided with a supply port, and the supply port is used to replenish the fluid.

[0026] In the embodiment of the present application, a supply port is provided on the second fixture, wherein the supply port is used to replenish the fluid. Liquid can be replenished into the fixture component from the supply port, thereby improving the temperature uniformity of the fixture component.

[0027] In some embodiments of the present application, the clamp component further includes a connecting pipe, the first clamp and the second clamp are connected through the connecting pipe, and / or two adjacent second clamps are connected through the connecting pipe.

[0028] The embodiments of the present application can connect the first clamp and the second clamp through the connecting pipe by setting a connecting pipe, or connect two adjacent second clamps through the connecting pipe, thereby realizing the connection between the first clamp and the second clamp, and / or the connection between two adjacent second clamps.

[0029] In some embodiments of the present application, the battery cell heating device further includes:

[0030] Circulation pipeline;

[0031] A heating element, the heating element is used to heat the fluid, and the battery cell heating assembly is connected to the heating element through a circulation pipeline; and

[0032] Pump body: the pump body is arranged on the circulation pipeline.

[0033] In some embodiments of the present application, the battery cell heating device further includes a temperature detector, which is disposed on the circulation pipeline.

[0034] In the embodiment of the present application, a temperature detector is arranged on the circulation pipeline, so that the temperature of the fluid can be detected.

[0035] In some embodiments of the present application, the battery cell heating assembly is a multi-row structure, and the multiple rows of battery cell heating assemblies are a series, parallel or mixed structure.

[0036] In the embodiment of the present application, by configuring the battery cell heating components to have a multi-row structure, and the multiple rows of battery cell heating components are connected in series, in parallel or in a mixed structure, a plurality of battery cells can be heated simultaneously, thereby improving the production efficiency of the battery cells.

[0037] A second aspect of the embodiments of the present application provides a battery production line, comprising the battery cell heating device mentioned in the above embodiments, wherein the battery cell heating device is used to heat the battery cells.

[0038] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0040] Figure 1 A schematic diagram of the structure of a battery cell heating assembly provided in some embodiments of the present application (including a battery cell);

[0041] Figure 2 for Figure 1 A schematic structural diagram of a first clamp of a battery cell heating assembly shown in ;

[0042] Figure 3 for Figure 2 Another structural schematic diagram of the first clamp of the battery cell heating assembly shown in ;

[0043] Figure 4 for Figure 1 A schematic structural diagram of a second fixture of a battery cell heating assembly shown in ;

[0044] Figure 5 for Figure 4 Another structural schematic diagram of the second clamp of the battery cell heating assembly shown in ;

[0045] Figure 6 for Figure 4 Another structural schematic diagram of the second clamp of the battery cell heating assembly shown in ;

[0046] Figure 7 for Figure 2 A schematic diagram of the internal structure of the second connecting portion of the first clamp shown in ;

[0047] Figure 8 for Figure 4 A schematic diagram of the internal structure of the fourth connecting portion of the second clamp shown in ;

[0048] Fig. 9 for Figure 4 A schematic diagram of the internal structure of the second clamping portion of the second clamp shown in ;

[0049] Fig.10 A schematic structural diagram of a battery cell heating device provided in some embodiments of the present application.

[0050] The reference numerals are as follows:

[0051] 100. Battery cell heating device;

[0052] 10. Battery cell heating assembly;

[0053] 11. first clamp; 111. first inlet; 112. first outlet; 113. first flow channel; 114. first clamping part; 115. first connecting part; 116. second connecting part; 1161. first inlet; 117. first baffle; 1171. first through hole; 12. second clamp; 121. second clamping part; 122. third connecting part; 123. fourth connecting part; 1231. second inlet; 124. second inlet; 125. second outlet; 126. second baffle; 1261. second through hole; 128. supply port; 13. first accommodating space; 14. second accommodating space; 15. heat transfer fin; 16. connecting pipe; 161. sealing ring;

[0054] 20. Circulation pipeline;

[0055] 30. Heating element;

[0056] 40. Pump body;

[0057] 50. Temperature detector;

[0058] 60. Valve;

[0059] 200, battery cell;

[0060] XX, first direction;

[0061] YY, second direction;

[0062] ZZ, vertical direction. DETAILED DESCRIPTION

[0063] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0065] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0066] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0067] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0068] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0069] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0070] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0071] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding.

[0072] The battery device involved in the embodiment of the present application can be used in, but not limited to, electrical equipment such as vehicles, ships or aircraft. The battery device comprising the battery cells, battery devices, etc. involved in the present application can be used.

[0073] In the embodiments of the present application, the electrical equipment using the battery device as the power source may be, but is not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, the electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and the spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0074] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery devices and electrical equipment described above, but can also be applied to all batteries including a box and electrical equipment using the battery.

[0075] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0076] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0077] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0078] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0079] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0080] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0081] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0082] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0083] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0084] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer is stacked as a positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer is stacked as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0085] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0086] During the battery production process, the battery cells need to be heated. Usually, the battery cells are clamped by a clamp and heated by air blowing or a bottom plate. However, this heating method has a low heating efficiency for the battery cells and the battery cells heat up slowly.

[0087] In order to solve this problem, an embodiment of the present application proposes a battery cell heating device, wherein the battery cell heating device includes a battery cell heating assembly, the battery cell heating assembly includes a clamp component, the clamp component includes two first clamps, and the two first clamps are respectively arranged at both ends of the clamp component along a first direction; each first clamp is provided with a first inlet and a first outlet, and a first flow channel connecting the first inlet and the first outlet is provided in the first clamp, and each first clamp includes a first clamping portion, the first clamping portion is used to clamp and heat the battery cell, then the first clamping portion can be used to clamp and heat the battery cell, thereby improving the heating efficiency of the battery cell.

[0088] The battery cell heating device in the embodiment of the present application can be used in the production process of the battery, and can also be installed on other products that need to be clamped and heated.

[0089] The structure in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0090] The first aspect of the embodiment of the present application provides a battery cell heating device 100, the battery cell heating device 100 includes a battery cell heating assembly 10, such as Figures 1 to 9 As shown, the battery cell heating assembly 10 includes a clamp component, and the clamp component includes two first clamps 11, and the two first clamps 11 are respectively arranged at both ends of the clamp component along the first direction; each first clamp 11 is provided with a first inlet 111 and a first outlet 112, and the first clamp 11 is provided with a first flow channel 113 connecting the first inlet 111 and the first outlet 112, and each first clamp 11 includes a first clamping portion 114, and the first clamping portion 114 is used to clamp and heat the battery cell 200; wherein the first direction is the length direction or the width direction of the clamp component.

[0091] It should be noted that the first direction here is Figure 1 The XX direction is the length direction of the clamp component, wherein the two first clamps 11 are respectively arranged at the two ends of the clamp component along the first direction. When the clamp component has only two first clamps 11, the first outlet 112 of the first clamp 11 at the left end is connected with the first inlet 111 of the first clamp 11 at the right end, the first inlet 111 of the first clamp 11 at the left end is connected with the external fluid, and the first outlet 112 of the first clamp 11 at the right end is connected with the heating element 30, etc., to achieve reheating of the fluid, so that the fluid can be recycled.

[0092] The first clamping portion 114 may be a rectangular structure with a hollow interior, which can clamp and heat the battery cell 200. Accordingly, multiple surfaces of the first clamping portion 114 are rectangular, which facilitates contact with the battery cell 200.

[0093] The embodiment of the present application is provided with a clamp component, wherein the clamp component includes two first clamps 11 arranged at both ends of the clamp component along a first direction, each first clamp 11 is provided with a first inlet 111 and a first outlet 112, and a first flow channel 113 connecting the first inlet 111 and the first outlet 112 is provided in the first clamp 11, and each first clamp 11 includes a first clamping portion 114, and the first clamping portion 114 is used to clamp and heat the battery cell 200. After the high-temperature liquid is injected into the first clamp 11, the battery cell 200 can be clamped and heated by the first clamping portion 114, thereby improving the heating efficiency of the battery cell 200.

[0094] In some embodiments of the present application, Figure 1 and Figure 2As shown, each first clamp 11 also includes a first connecting portion 115 and a second connecting portion 116, which are respectively connected to the two ends of the first clamping portion 114 along the second direction, and the first connecting portion 115 and the second connecting portion 116 are both hollow structures, wherein the first connecting portion 115 is provided with a first inlet 111, and the second connecting portion 116 is provided with a first outlet 112; the second direction intersects with the first direction.

[0095] It should be noted that at least one of the first connection part 115 and the second connection part 116 is provided with a guide member, which can guide the flow direction of the high-temperature liquid, so that the temperature of the first connection part 115 and / or the second connection part 116 can be more uniform.

[0096] The guide member here is a component for guiding the liquid and can guide the flow direction of the liquid.

[0097] It is understandable that the first connection portion 115 can be a hollow rectangular structure, or a structure of other shapes, such as a trapezoidal structure. The first inlet 111 provided on the first connection portion 115 can be a circular structure, or a rectangular hole structure, and the first outlet 112 provided on the second connection portion 116 can also be a circular structure, or a rectangular hole structure.

[0098] In the embodiment of the present application, a first connection portion 115 and a second connection portion 116 are provided, and the first connection portion 115 and the second connection portion 116 are respectively connected to the two ends of the first clamping portion 114 along the second direction, and the first connection portion 115 and the second connection portion 116 are both hollow structures, wherein a first inlet 111 is provided on the first connection portion 115, and a first outlet 112 is provided on the second connection portion 116, which will not affect the clamping and heating functions of the first clamping portion 114, thereby facilitating heating of the battery cell 200.

[0099] In some embodiments of the present application, Figure 7 As shown, the flow guide comprises a first partition plate 117 . The first partition plate 117 for guiding the flow of fluid is disposed in the second connecting portion 116 . The first partition plate 117 is provided with a first through hole 1171 .

[0100] The first partition 117 here is a plate-like structure, and the first partition 117 is arranged in a vertical direction. Accordingly, the first through hole 1171 is arranged on the first partition 117, and can be a circular hole, a rectangular hole or an elliptical hole, all of which can achieve continuous flow of liquid.

[0101] In the embodiment of the present application, a first partition 117 for guiding the flow of fluid is provided in the second connection portion 116 , and a first through hole 1171 is provided on the first partition 117 , so that the flow direction of the fluid can be guided so that the heat is evenly distributed in the second connection portion 116 .

[0102] Optionally, the second connecting part 116 is divided into two cavities by the first partition 117, wherein the two cavities are respectively located on both sides of the first partition 117, and a first inlet 1161 is provided on the surface of the second connecting part 116 opposite to the first clamping part 114. After the liquid flows in from the first inlet 1161, it passes through the first through hole 1171 and finally flows out from the connecting tube 16 connected to the second connecting part 116.

[0103] Alternatively, if Figure 7 As shown, the second connecting portion 116 includes a first part and a second part, the second part is arranged below the first part and is provided with a first outlet 112, and the first partition 117 includes a third part and a fourth part along the vertical direction, the third part is arranged above the fourth part and is provided with a first through hole 1171, that is, the second connecting portion 116 is provided with the first outlet 112 in the lower half along the vertical direction, and the first partition 117 is provided with the first through hole 1171 in the upper half along the vertical direction, and the vertical direction intersects with both the first direction and the second direction.

[0104] The first part and the second part use the middle line of the second connecting portion 116 along the vertical direction as the dividing point, and the third part and the fourth part use the middle line of the first partition plate 117 along the vertical direction as the dividing point.

[0105] in, Figure 2 The ZZ direction in is the vertical direction, and the second direction is Figure 2 That is to say, the lower half of the second connection part 116 along the ZZ direction is provided with the first outlet 112, and the upper half of the first partition 117 along the vertical direction is provided with the first through hole 1171, so that the liquid on the left side of the first partition 117 can enter the right side of the first partition 117 from the first through hole 1171, so that the heat of the second connection part 116 along the vertical direction is evenly distributed.

[0106] In the embodiment of the present application, a first outlet 112 is provided in the second portion of the second connecting portion 116 along the vertical direction, and a first through hole 1171 is provided in the third portion of the first partition 117 along the vertical direction. This allows the fluid to pass through the first through hole 1171 located in the second portion of the first partition 117 along the vertical direction and then flow out from the first outlet 112, so that heat is evenly distributed in the second connecting portion 116 along the vertical direction, thereby allowing the heat to be evenly distributed in the second clamping portion 121, thereby achieving uniform heating of the battery cell.

[0107] Alternatively, if Figures 3 to 6 As shown, the clamp component also includes at least one second clamp 12, and at least one second clamp 12 is arranged between the two first clamps 11; the second clamp 12 includes a second clamping portion 121, the second clamping portion 121 is a hollow structure, and the second clamping portion 121 is connected to the first flow channel 113; a first accommodating space 13 is provided between the second clamping portion 121 and the first clamping portion 114; and / or, the number of the second clamps 12 is multiple, and a second accommodating space 14 is provided between two adjacent second clamping portions 121, and the first accommodating space 13 and the second accommodating space 14 are both used to place the battery cell 200, and the surface with the largest area of ​​the battery cell 200 is in contact with the first clamping portion 114 and / or the second clamping portion 121.

[0108] Among them, the battery cell 200 is usually a rectangular structure with multiple surfaces. The surface with the largest area of ​​the battery cell 200 is in contact with the first clamping part 114 and / or the second clamping part 121, which can increase the contact area between the first clamping part 114 and / or the second clamping part 121 and the battery cell 200, thereby increasing the heating area of ​​the battery cell 200 and improving the heating efficiency of the battery cell 200.

[0109] The second clamp 12 is located between the two first clamps 11 . The number of the second clamps 12 may be one or more. Battery cells 200 may be placed between the first clamp 11 and the second clamp 12 , and between two adjacent second clamps 12 , so as to achieve simultaneous heating of multiple battery cells 200 .

[0110] It should be noted that the first accommodating space 13 and the second accommodating space 14 can have the same space size to accommodate battery cells 200 of the same specifications, or can be set to different space sizes to facilitate the placement of battery cells 200 of different specifications.

[0111] In the embodiment of the present application, by adding at least one second clamp 12 disposed between the two first clamps 11, and the second clamp 12 includes a second clamping portion 121, the second clamping portion 121 is a hollow structure, and the second clamping portion 121 is connected to the first flow channel 113, a plurality of battery cells 200 can be placed through the first accommodating space 13 and / or the second accommodating space 14, so that the plurality of battery cells 200 can be heated simultaneously, thereby improving the production efficiency of the battery cells 200.

[0112] Alternatively, if Figures 3 to 6As shown, the second clamp 12 includes a third connecting portion 122 and a fourth connecting portion 123, and the third connecting portion 122 and the fourth connecting portion 123 are respectively connected to the two ends of the second clamping portion 121 along the second direction, and the third connecting portion 122 and the fourth connecting portion 123 are both hollow structures, wherein the third connecting portion 122 is provided with a second inlet 124, and the second inlet 124 is connected to a first clamp 11, and the fourth connecting portion 123 is provided with a second outlet 125, and the second outlet 125 is connected to another first clamp 11.

[0113] It is understandable that the third connection portion 122 may be a hollow rectangular structure, or a structure of other shapes, such as a trapezoidal structure. The second inlet 124 provided on the third connection portion 122 may be a circular structure, or a rectangular hole structure, and the second outlet 125 provided on the fourth connection portion 123 may also be a circular structure, or a rectangular hole structure.

[0114] In the embodiment of the present application, a third connection part 122 and a fourth connection part 123 are provided, and the third connection part 122 and the fourth connection part 123 are respectively connected to the two ends of the second clamping part 121 along the second direction, and the third connection part 122 and the fourth connection part 123 are both hollow structures, wherein a second inlet 124 is provided on the third connection part 122, and a second outlet 125 is provided on the fourth connection part 123, which will not affect the clamping and heating functions of the second clamping part 121, thereby facilitating heating of the battery cell 200.

[0115] Alternatively, if Figure 8 As shown, a second partition plate 126 for guiding the flow of fluid is disposed in the fourth connecting portion 123 , and a second through hole 1261 is disposed on the second partition plate 126 .

[0116] The second partition 126 here is a plate-like structure, and the second partition 126 is arranged in a vertical direction. Accordingly, the second through hole 1261 is arranged on the second partition 126, and can be a circular hole, a rectangular hole or an elliptical hole, all of which can achieve continuous flow of liquid.

[0117] In the embodiment of the present application, a second partition 126 for guiding fluid flow is provided in the fourth connection part 123 , and a second through hole 1261 is provided on the second partition 126 , so that the flow direction of the fluid can be guided so that heat is evenly distributed in the fourth connection part 123 .

[0118] Optionally, the fourth connecting part 123 is divided into two cavities by the second partition 126, wherein the two cavities are respectively located on both sides of the second partition 126, and a second inlet 1231 is provided on the surface of the fourth connecting part 123 opposite to the second clamping part 121. After the liquid flows in from the second inlet 1231, it passes through the second through hole 1261 and finally flows out from the connecting pipe 16 connected to the fourth connecting part 123.

[0119] Optionally, the fourth connecting portion 123 includes a first upper half and a first lower half along the vertical direction, the first lower half is arranged below the first upper half and is provided with a second outlet 125, and the second partition 126 includes a second upper half and a second lower half along the vertical direction, the second upper half is arranged above the second lower half and is provided with a second through hole 1261, that is, the fourth connecting portion 123 is provided with a second outlet 125 in the lower half along the vertical direction, and the second partition 126 is provided with a second through hole 1261 in the upper half along the vertical direction.

[0120] The first upper half and the first lower half are divided by the middle line of the fourth connecting portion 123 along the vertical direction, and the second upper half and the second lower half are divided by the middle line of the second partition plate 126 along the vertical direction.

[0121] A second outlet 125 is provided in the lower half of the fourth connection part 123 along the vertical direction ZZ, and a second through hole 1261 is provided in the upper half of the second partition 126 along the vertical direction. The liquid on the left side of the second partition 126 can enter the right side of the second partition 126 through the second through hole 1261, so that the heat of the fourth connection part 123 along the vertical direction is evenly distributed.

[0122] In the embodiment of the present application, a second outlet 125 is provided in the lower half of the fourth connecting portion 123 along the vertical direction, and a second through hole 1261 is provided in the upper half of the second partition 126 along the vertical direction. This allows the fluid to pass through the second through hole 1261 located in the upper half of the second partition 126 along the vertical direction and then flow out from the second outlet 125, so that heat is evenly distributed in the fourth connecting portion 123 along the vertical direction, thereby allowing the heat to be evenly distributed within the fourth clamping portion, thereby achieving uniform heating of the battery cell.

[0123] Optionally, a heat transfer structure is disposed inside at least one of the first clamping portion 114 and the second clamping portion 121 .

[0124] It should be noted that the heat transfer structure here can be a fixed structure, such as a metal sheet or other material with heat transfer performance. Preferably, the first clamping portion 114 and the second clamping portion 121 are both provided with a heat transfer structure, which can improve the heating efficiency of the first clamping portion 114 and the second clamping portion 121 on the battery cell 200.

[0125] In the embodiment of the present application, a heat transfer structure is provided inside at least one of the first clamping portion 114 and the second clamping portion 121 , so that the efficiency of heat transfer can be improved and the temperature rise speed of the battery cell 200 can be increased.

[0126] Alternatively, if Fig. 9 As shown, the heat transfer structure includes heat transfer fins 15, and the heat transfer fins 15 extend along the second direction, wherein the second direction is Figure 2 The YY direction in .

[0127] The heat transfer fins 15 here can be made of copper alloy, aluminum alloy or stainless steel, etc., which can increase the heat exchange efficiency between the high-temperature fluid and the second clamping portion 121 , thereby improving the heating efficiency of the battery cell 200 .

[0128] In the embodiment of the present application, the heat transfer structure includes heat transfer fins 15, wherein the heat transfer fins 15 extend along the second direction, so that the heat transfer fins 15 can quickly transfer the heat of the high-temperature fluid to the battery cell 200, thereby improving the heating efficiency of the battery cell 200. In addition, the heat transfer fins 15 can also increase the strength of the first clamping portion 114, or the heat transfer structure can also increase the strength of the second clamping portion 121.

[0129] Alternatively, if Figure 5 and Figure 6 As shown, the second clamp 12 is further provided with a supply port 128, and the supply port 128 is used to replenish the fluid.

[0130] It should be noted that the supply port 128 here can be set at the top or side of the second fixture 12, so as to be connected to the external liquid through a pipeline, so as to inject new high-temperature liquid into the second fixture 12 through the supply port 128.

[0131] In the embodiment of the present application, a supply port 128 is provided on the second fixture 12 , wherein the supply port 128 is used to replenish the fluid. Liquid can be replenished into the fixture component from the supply port 128 , thereby improving the temperature uniformity of the fixture component.

[0132] Alternatively, if Figure 7 and Figure 8 As shown, the clamp component further includes a connecting pipe 16 , through which the first clamp 11 and the second clamp 12 are connected, and / or two adjacent second clamps 12 are connected.

[0133] The connecting tube 16 here can be a circular tube or a rectangular tube, which can be selected as needed. Optionally, a sealing ring 161 is provided on the connecting tube 16, and a sealing connection between the first clamp 11 and the second clamp 12 can be achieved through the connecting tube 16.

[0134] It is understandable that the connecting pipe 16 and the sealing ring 161 here are both resistant to high temperatures and can work at high temperatures.

[0135] The embodiment of the present application can connect the first clamp 11 and the second clamp 12 through the connecting pipe 16 by setting the connecting pipe 16, or connect two adjacent second clamps 12 through the connecting pipe 16, so as to realize the connection between the first clamp 11 and the second clamp 12, or the connection between two adjacent second clamps 12.

[0136] Continue to refer to Figure 1 As shown, the first clamps 11 are respectively located at both ends of the battery cell heating assembly 10 along the XX direction, and the second clamp 12 is located between the two first clamps 11. There are multiple second clamps 12, and the multiple second clamps 12 are interconnected. The high-temperature liquid flows along the direction of the arrow, enters from the first inlet 111 on the left, circulates in sequence, and flows out from the first outlet 112 on the far right. When necessary, the high-temperature liquid can be injected into the battery cell heating assembly 10 from the supply port 128 of the second clamp 12.

[0137] The high-temperature liquid here can be hot water, high-temperature heat transfer oil, high-temperature coal tar, etc., which can achieve the heating function.

[0138] Alternatively, if Fig.10 As shown, the battery cell heating device 100 also includes a circulation pipeline 20, a heating element 30 and a pump body 40. The heating element 30 is used to heat the fluid; the battery cell heating assembly 10 is connected to the heating element 30 through the circulation pipeline 20; and the pump body 40 is arranged on the circulation pipeline 20.

[0139] The heating element 30 here may adopt an electric heating structure, which can heat the fluid, thereby realizing the recycling use of the entire heating device.

[0140] Optionally, the battery cell heating device 100 further includes a temperature detector 50 , which is disposed on the circulation pipeline 20 .

[0141] The temperature detector 50 here can be a temperature sensor or a temperature display, etc., which can detect the temperature of the liquid. The number of the temperature detector 50 can be one or more, and the liquid temperature at different positions can be detected respectively.

[0142] In the embodiment of the present application, a temperature detector 50 is provided on the circulation pipeline 20 so as to detect the temperature of the fluid.

[0143] Optionally, the battery cell heating assembly 10 is a multi-row structure, and the multiple rows of battery cell heating assemblies 10 are a series, parallel or mixed structure.

[0144] Optionally, the battery cell heating device 100 further includes a valve 60 , wherein the valve 60 can control the connection or disconnection of the circulation pipeline 20 .

[0145] exist Fig.10 In the figure, the battery cell heating assembly 10 is a row structure. When the battery cell heating assembly 10 is multiple rows, a parallel structure is adopted, and each battery cell heating assembly 10 is connected to the high-temperature liquid respectively. A series structure can also be adopted, and the high-temperature liquid is replenished through the supply port 128.

[0146] In the embodiment of the present application, by configuring the battery cell heating assembly 10 to have a multi-row structure, and the multiple rows of battery cell heating assemblies 10 are connected in series, in parallel or in a mixed structure, a plurality of battery cells can be heated simultaneously, thereby improving the production efficiency of the battery cells.

[0147] A second aspect of the embodiments of the present application provides a battery production line, comprising the battery cell heating device 100 mentioned in the above embodiments, and the battery cell heating device 100 is used to heat battery cells.

[0148] The battery production line is also equipped with other production equipment and testing equipment, such as winding equipment, welding equipment and insulation performance testing equipment.

[0149] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0150] A first aspect of an embodiment of the present application provides a battery cell heating device 100, the battery cell heating device 100 includes a battery cell heating assembly 10, the battery cell heating assembly 10 includes a clamp component, the clamp component includes two first clamps 11, and the two first clamps 11 are respectively arranged at two ends of the clamp component along a first direction;

[0151] Each first clamp 11 is provided with a first inlet 111 and a first outlet 112, and a first flow channel 113 connecting the first inlet 111 and the first outlet 112 is provided in the first clamp 11, and each first clamp 11 includes a first clamping portion 114, and the first clamping portion 114 is used to clamp and heat the battery cell; wherein the first direction is the length direction or width direction of the clamp component. Further, each first clamp 11 also includes a first connecting portion 115 and a second connecting portion 116, and the first connecting portion 115 and the second connecting portion 116 are respectively connected to the two ends of the first clamping portion 114 along the second direction, and the first connecting portion 115 and the second connecting portion 116 are both hollow structures, wherein the first connecting portion 115 is provided with a first inlet 111, and the second connecting portion 116 is provided with a first outlet 112; the second direction intersects with the first direction. Further, a first baffle 117 for guiding the flow of fluid is provided in the second connecting portion 116, and a first through hole 1171 is provided on the first baffle 117. Further, the lower half of the second connection portion 116 along the vertical direction is provided with a first outlet 112, and the upper half of the first partition 117 along the vertical direction is provided with a first through hole 1171, and the vertical direction intersects with both the first direction and the second direction. Further, the clamp component also includes at least one second clamp 12, and at least one second clamp 12 is arranged between the two first clamps 11; the second clamp 12 includes a second clamping portion 121, the second clamping portion 121 is a hollow structure, and the second clamping portion 121 is connected to the first flow channel 113; a first accommodating space 13 is arranged between the second clamping portion 121 and the first clamping portion 114; and / or, the number of the second clamps 12 is multiple, and a second accommodating space 14 is arranged between two adjacent second clamping portions 121, and the first accommodating space 13 and the second accommodating space 14 are both used to place battery cells, and the surface of the battery cell with the largest area is in contact with the first clamping portion 114 and / or the second clamping portion 121. Further, the second clamp 12 includes a third connection part 122 and a fourth connection part 123, the third connection part 122 and the fourth connection part 123 are respectively connected to the two ends of the second clamping part 121 along the second direction, and the third connection part 122 and the fourth connection part 123 are both hollow structures, wherein the third connection part 122 is provided with a second inlet 124, the second inlet 124 is connected to one first clamp 11, and the fourth connection part 123 is provided with a second outlet 125, the second outlet 125 is connected to another first clamp 11. Further, a second partition 126 for guiding the flow of fluid is provided in the fourth connection part 123, and a second through hole 1261 is provided on the second partition 126. Further, the lower half of the fourth connection part 123 along the vertical direction is provided with a second outlet 125, and the upper half of the second partition 126 along the vertical direction is provided with a second through hole 1261. Further, a heat transfer structure is disposed inside at least one of the first clamping portion 114 and the second clamping portion 121. Further, the heat transfer structure includes heat transfer fins 15, and the heat transfer fins 15 extend along the second direction.Furthermore, the second clamp 12 is also provided with a supply port 128 for replenishing fluid. Furthermore, the clamp component also includes a connecting pipe 16, through which the first clamp 11 and the second clamp 12 are connected, and / or two adjacent second clamps 12 are connected.

[0152] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A battery cell heating device, characterized in that: include: A battery cell heating assembly, the battery cell heating assembly comprising a clamp component, the clamp component comprising two first clamps, the two first clamps are respectively arranged at two ends of the clamp component along a first direction; Each of the first clamps is provided with a first inlet and a first outlet, and a first flow channel connecting the first inlet and the first outlet is provided in the first clamp, and each of the first clamps includes a first clamping portion, a first connecting portion, and a second connecting portion, the first clamping portion is used to clamp and heat the battery cell, the first connecting portion and the second connecting portion are respectively connected to two ends of the first clamping portion along the second direction, and the first connecting portion and the second connecting portion are both hollow structures, and a flow guide is provided inside at least one of the first connecting portion and the second connecting portion; The first direction is the length direction or the width direction of the clamp component, and the second direction intersects with the first direction.

2. The battery cell heating device according to claim 1, characterized in that: The first connecting portion is provided with the first inlet, and the second connecting portion is provided with the first outlet.

3. The battery cell heating device according to claim 2, characterized in that: The flow guide member includes a first partition plate, the first partition plate is arranged inside the second connecting portion, and a first through hole is provided on the first partition plate.

4. The battery cell heating device according to claim 3, characterized in that: Along the vertical direction, the second connecting portion includes a first part and a second part, the second part is arranged below the first part and is provided with the first outlet, and the first partition includes a third part and a fourth part along the vertical direction, the third part is arranged above the fourth part and is provided with the first through hole, and the vertical direction intersects both the first direction and the second direction.

5. The battery cell heating device according to claim 2, characterized in that: The fixture component also includes: at least one second clamp, wherein the at least one second clamp is disposed between the two first clamps; The second clamp comprises a second clamping portion, the second clamping portion is a hollow structure, and the second clamping portion is communicated with the first flow channel; A first accommodating space is provided between the second clamping portion and the first clamping portion; And / or, there are multiple second clamps, a second accommodating space is provided between two adjacent second clamping parts, the first accommodating space and the second accommodating space are both used to place the battery cell, and the surface of the battery cell with the largest area is in contact with the first clamping part and / or the second clamping part.

6. The battery cell heating device according to claim 5, characterized in that: The second clamp includes a third connecting part and a fourth connecting part, and the third connecting part and the fourth connecting part are respectively connected to the two ends of the second clamping part along the second direction, and the third connecting part and the fourth connecting part are both hollow structures, wherein the third connecting part is provided with a second inlet, and the second inlet is connected to one of the first clamps, and the fourth connecting part is provided with a second outlet, and the second outlet is connected to another of the first clamps.

7. The battery cell heating device according to claim 6, characterized in that: A second partition plate for guiding fluid flow is disposed in the fourth connecting portion, and a second through hole is disposed on the second partition plate.

8. The battery cell heating device according to claim 7, characterized in that: The fourth connecting portion includes a first upper half and a first lower half along the vertical direction, the first lower half is arranged below the first upper half and is provided with the second outlet, and the second partition includes a second upper half and a second lower half along the vertical direction, the second upper half is arranged above the second lower half and is provided with the second through hole.

9. The battery cell heating device according to any one of claims 5 to 8, characterized in that: A heat transfer structure is disposed inside at least one of the first clamping portion and the second clamping portion.

10. The battery cell heating device according to claim 9, characterized in that: The heat transfer structure includes heat transfer fins, and the heat transfer fins extend along the second direction.

11. The battery cell heating device according to any one of claims 5 to 8, characterized in that: The second fixture is also provided with a supply port, and the supply port is used to replenish the fluid.

12. The battery cell heating device according to any one of claims 5 to 8, characterized in that: The fixture component also includes: A connecting pipe, through which the first clamp and the second clamp are connected, and / or two adjacent second clamps are connected.

13. The battery cell heating device according to any one of claims 5 to 8, characterized in that: The battery cell heating device further comprises: Circulation pipeline; A heating element, the heating element is used to heat the fluid, the battery cell heating assembly is connected to the heating element through the circulation pipeline; and A pump body is arranged on the circulation pipeline.

14. The battery cell heating device according to claim 13, characterized in that: The battery cell heating device further comprises: A temperature detector is arranged on the circulation pipeline.

15. The battery cell heating device according to claim 13, characterized in that: The battery cell heating components are of a multi-row structure, and the multiple rows of battery cell heating components are of a series, parallel or mixed structure.

16. A battery production line, characterized in that: The invention comprises the battery cell heating device according to any one of claims 1 to 15, wherein the battery cell heating device is used for heating a battery cell.

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