Battery pack heating device

Abstract

The present application provides a battery pack heating device. The battery pack heating device includes a bracket assembly, a controller, an adjustment mechanism and a heating assembly. The bracket assembly includes a support frame, the support frame is used to support the battery pack, the controller is arranged on the support frame, the adjustment mechanism includes a driving assembly, a lifting assembly and an angle adjustment assembly, the driving assembly is arranged on the support frame, the angle adjustment assembly includes a vertical guide rail, the lifting assembly includes a tray, along the first direction, the driving assembly drives the tray to be slidably connected to the vertical guide rail, along the second direction, the angle adjustment assembly is rotatably connected to the support frame, the heating assembly includes a heating film, the heating film is arranged on the surface of the tray facing the battery pack, the driving assembly drives the tray to rise or fall so that the heating film is attached to or separated from the battery pack, and the heating film is electrically conductive with the controller. The battery pack heating device of the present application can solve the problem that the heating film cannot be reused after being pasted, resulting in waste of resources and increased costs.

Description

Technical Field

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

[0002] With the rapid development of the economy, mankind is facing problems such as the depletion of non-renewable resources, serious environmental pollution, and climate warming. The research and development of energy storage technology is receiving more and more attention from countries around the world.

[0003] Currently, liquid-cooled battery packs within energy storage systems must maintain a cell temperature above 15°C during offline testing. To improve testing efficiency in lower temperatures, such as in winter, heating the liquid-cooled battery packs is a common practice in the industry.

[0004] Related technologies use a heating film attached to the bottom of the battery pack to heat the battery pack. However, this method is cumbersome, affecting worker efficiency and resulting in high labor costs. Furthermore, the applied heating film cannot be reused, resulting in wasted resources and increased costs. Summary of the Invention

[0005] The present application provides a battery pack heating device, which can solve the problem that the heating film cannot be reused after being pasted, resulting in waste of resources and increased costs.

[0006] The present application provides a battery pack heating device, which includes:

[0007] A bracket assembly, comprising a support frame, the support frame being used to support the battery pack;

[0008] A controller is arranged on the support frame;

[0009] The adjustment mechanism includes a drive assembly, a lifting assembly, and an angle adjustment assembly. The drive assembly is disposed on the support frame. The angle adjustment assembly includes a vertical guide rail. The lifting assembly includes a tray. The drive assembly drives the tray to be slidably connected to the vertical guide rail in a first direction. The angle adjustment assembly is rotatably connected to the support frame in a second direction.

[0010] The heating component includes a heating film, which is arranged on the surface of the tray facing the battery pack. The driving component drives the tray to rise or fall so that the heating film is attached to or separated from the battery pack. The heating film is electrically connected to the controller.

[0011] The battery pack heating device provided in the present application, the controller can be used to control the heating film to start or stop heating. The driving component can drive the lifting component to rise so that the heating film fits the battery pack, so that the battery pack can be heated. When the battery pack no longer needs to be heated, the driving component can drive the lifting component to descend to separate the battery pack from the heating film. In summary, the embodiment of the present application can meet the heating efficiency of the battery pack on the one hand, and on the other hand, the heating film can be reused, which is beneficial to reduce the possibility of increased labor costs due to multiple pasting by staff. At the same time, it can also save the use of the heating film, which is beneficial to reduce material costs.

[0012] According to one embodiment of the present application, the angle adjustment assembly also includes an adjustment locking piece. Along the third direction, the adjustment locking piece is arranged on a side of the support frame close to the vertical guide rail. The adjustment locking piece is arranged corresponding to the vertical guide rail. The adjustment locking piece is locked or loosened to drive the vertical guide rail close to or away from the inner wall of the support frame.

[0013] According to one embodiment of the present application, the angle adjustment assembly further includes a reinforcing beam, which is arranged at the upper end of the vertical guide rail along the first direction, and the reinforcing beam is rotatably connected to the support frame.

[0014] According to one embodiment of the present application, the lifting assembly further includes a sliding rod and a sliding column, the sliding rod is connected to the tray, and the sliding rod is slidably connected to the vertical guide rail through the sliding column.

[0015] According to an embodiment of the present application, there are two vertical guide rails, which are spaced apart along the second direction. The sliding rod is disposed between the two vertical guide rails. The sliding columns are disposed at both ends of the sliding rod along the second direction.

[0016] According to one embodiment of the present application, along the first direction, the drive assembly is located below the sliding rod, and the drive assembly includes a screw rod and a rotating disk. The upper end of the screw rod is connected to the sliding rod. The rotating disk rotates clockwise or counterclockwise to drive the screw rod to extend or shorten, and the screw rod extends or contracts to drive the sliding rod to rise or fall.

[0017] According to one embodiment of the present application, the bracket assembly also includes a stacking guide column, which is connected to the support frame. The stacking guide column includes a top guide portion and a fixed base. A recess is provided on the surface of the fixed base facing away from the top guide portion. When the bracket assembly is stacked along a first direction, part of the top guide portion of the lower layer is located in the vertical guide rail of the upper layer, and another part of the top guide portion is located in the recess of the fixed base of the upper layer.

[0018] According to one embodiment of the present application, the stacking guide column also includes an intermediate vertical beam, which is located between the top guide portion and the fixed base along the first direction, and the top guide portion includes a top surface and a bottom surface, and along the first direction, the orthographic projection of the top surface is located inside the orthographic projection of the intermediate vertical beam, the orthographic projection of the intermediate vertical beam is located inside the orthographic projection of the bottom surface, and the orthographic projection of the bottom surface is located inside the orthographic projection of the fixed base.

[0019] According to one embodiment of the present application, the heating assembly further includes a heat-insulating layer, and along the first direction, the heat-insulating layer is located between the tray and the heating film.

[0020] According to one embodiment of the present application, a limit block is further included. The limit block is arranged at one end of the support frame away from the lifting assembly, and the limit block is detachably connected to the support frame.

[0021] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the battery pack heating device provided by the embodiments of the present invention, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] Figure 1 This is a structural schematic diagram of a battery pack placed in a battery pack heating device according to an embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the axial structure of a battery pack heating device according to an embodiment of the present application;

[0025] Figure 3 This is another schematic diagram of the axial structure of the battery pack heating device according to one embodiment of the present application;

[0026] Figure 4 This is a side structural schematic diagram of a battery pack heating device according to an embodiment of the present application;

[0027] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 6 This is a side view schematic diagram of the stacked structure of a multi-layer battery pack heating device according to one embodiment of the present application;

[0029] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at B in the middle;

[0030] Figure 8 for Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0031] Description of reference numerals:

[0032] 100-battery pack heating device;

[0033] 110- bracket assembly; 111- support frame;

[0034] 120-controller;

[0035] 130-adjustment mechanism;

[0036] 131-driving assembly; 1311-screw; 1312-rotating disk;

[0037] 132-lifting assembly;

[0038] 1321-tray; 1322-sliding rod; 1323-connecting rod; 1324-pushing protrusion;

[0039] 133-angle adjustment component;

[0040] 1331-vertical guide rail;

[0041] 1332-adjusting lock piece; 1332a-adjusting screw; 1332b-adjusting nut;

[0042] 1333-Reinforced beams;

[0043] 141- heating film; 142- insulation layer;

[0044] 150-palletizing guide column;

[0045] 151-top guide portion; 1511-top surface; 1512-bottom surface; 1513-inclined surface;

[0046] 152-Fixed base;

[0047] 153-middle vertical beam;

[0048] 160-limit block;

[0049] 170-cabinet connection piece;

[0050] 200-battery pack;

[0051] X-first direction;

[0052] Y-second direction;

[0053] Z-third direction.

[0054] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0055] The exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0056] The battery pack of the present application may be a power battery pack, also referred to as a PACK. The battery pack may be used in a vehicle. For example, the vehicle may be an electric vehicle.

[0057] As the core power component of electric vehicles, battery packs undergo strict quality management on the production line. However, from the moment a product rolls off the assembly line to customer delivery, it undergoes not only comprehensive product testing, safety testing, and testing of its response capabilities simulating worst-case scenarios, in addition to meeting physical and dimensional requirements. Therefore, only after passing all end-of-life (EOL) tests can a battery pack be installed in a vehicle.

[0058] During off-line battery pack testing, the cell temperature must be maintained above 15°C. In colder environments, such as winter, heating liquid-cooled battery packs is a common practice in the industry to improve testing efficiency.

[0059] One heating solution in the related art is to place the liquid cooling pack in a thermostat, and to increase the temperature of the battery cells in the liquid cooling pack by increasing the ambient temperature in the thermostat. However, the heating efficiency of this solution is low, and it occupies a large space in the thermostat. Another heating solution is to heat the bottom of the battery pack by circulating hot water through the bottom of the liquid cooling pack. However, although this solution can meet the heating efficiency, it has the problem that the circulating water is difficult to clean. Another heating solution is to heat the battery pack by sticking a heating film on the bottom of the battery pack. However, the operation of sticking the heating film is relatively cumbersome, which can easily affect the efficiency of the staff and has high labor costs. In addition, the heating film cannot be reused after sticking, which can easily lead to waste of resources and increased costs.

[0060] Therefore, in order to solve at least one of the problems mentioned above, an embodiment of the present application provides a battery pack heating device for heating a liquid-cooled battery pack. The battery pack heating device is equipped with an adjustment mechanism and a heating component. Among them, the controller can be used to control the heating film to start or stop heating. The driving component can drive the lifting component to rise so that the heating film fits the battery pack, so that the battery pack can be heated. When the battery pack no longer needs to be heated, the driving component can drive the lifting component to descend to separate the battery pack from the heating film. In summary, the embodiment of the present application can meet the heating efficiency of the battery pack on the one hand, and on the other hand, the heating film can be reused, which is beneficial to reduce the possibility of increased labor costs due to multiple pasting by staff. At the same time, it can also save the use of heating film, which is beneficial to reduce material costs.

[0061] In addition, the angle adjustment component of the present application can be used to adjust the angle between the heating film and the horizontal plane to improve the fit between the battery pack and the heating film, thereby helping to improve the heating efficiency of the battery pack.

[0062] The battery pack heating device provided in this application is described below with reference to the accompanying drawings and in combination with specific embodiments.

[0063] See also Figures 1 to 3 As shown, the battery pack heating device 100 of the embodiment of the present application includes a bracket assembly 110, a controller 120, an adjustment mechanism 130 and a heating assembly.

[0064] The support assembly 110 includes a support frame 111. The support frame 111 is used to support the battery pack 200. The controller 120 is disposed on the support frame 111.

[0065] Adjustment mechanism 130 includes a drive assembly 131, a lifting assembly 132, and an angle adjustment assembly 133. Drive assembly 131 is mounted on support frame 111. Angle adjustment assembly 133 includes vertical guide rails 1331. Lifting assembly 132 includes a tray 1321. Drive assembly 131 drives tray 1321 to slide along vertical guide rails 1331 in a first direction (X). Angle adjustment assembly 133 is rotatably connected to support frame 111 in a second direction (Y).

[0066] The heating assembly includes a heating film 141. The heating film 141 is disposed on the surface of the tray 1321 facing the battery pack 200. The driving assembly 131 drives the tray 1321 upward or downward to attach or detach the heating film 141 from the battery pack 200. The heating film 141 is electrically connected to the controller 120.

[0067] In an embodiment of the present application, the battery pack 200 to be heated can be placed on the support frame 111. The driving component 131 can drive the tray 1321 to rise so that the heating film 141 on the tray 1321 can contact the bottom surface 1512 of the battery pack 200. The controller 120 can control the heating film 141 to heat the battery pack 200. At this time, the heating film 141 is located between the battery pack 200 and the tray 1321. The heating film 141 can be subjected to the downward gravity of the battery pack 200 along the first direction X, and the upward force applied by the driving component 131 to the tray 1321 along the first direction X. Therefore, the battery pack 200 and the tray 1321 can jointly press the heating film 141 so that it is tightly connected to the battery pack, which is beneficial to improving the heating efficiency of the battery pack 200.

[0068] In addition, when the tray 1321 is deformed due to long-term use, since the tray 1321 can be slidably connected to the vertical guide rail 1331, the angle of the vertical guide rail 1331 can be adjusted to adjust the angle between the tray 1321 and the horizontal plane, thereby compensating for the deformation of the tray 1321 and improving the fit between the heating film 141 and the bottom surface 1512 of the battery pack 200.

[0069] In some examples, the support frame 111 has a support surface. The battery pack 200 can be placed on the support surface. Initially, the tray 1321 can be located below the support surface. When heating the battery pack 200 is required, the drive assembly 131 can drive the tray 1321 up to the support surface so that the heating film 141 can be tightly connected to the bottom surface 1512 of the battery pack 200.

[0070] In some possible implementations, see Figure 4 and Figure 5 As shown, the angle adjustment assembly 133 of the present embodiment further includes an adjustment lock 1332. Along the third direction Z, the adjustment lock 1332 is disposed on a side of the support frame 111 near the vertical guide rail 1331. The adjustment lock 1332 is disposed corresponding to the vertical guide rail 1331. The adjustment lock 1332 is tightened or loosened to drive the vertical guide rail 1331 toward or away from the inner sidewall of the support frame 111.

[0071] In some examples, along the first direction X, the upper end of the vertical guide rail 1331 can be rotatably connected to the support frame 111, and the lower end of the vertical guide rail 1331 can hang freely under the action of its own gravity. The adjustment locking member 1332 and the vertical guide rail 1331 can be spaced apart along the third direction Z. The adjustment locking member 1332 may include an adjusting screw 1332a and an adjusting nut 1332b. The adjusting nut 1332b may be set on the support frame 111. The tail end of the adjusting screw 1332a passes through the adjusting nut 1332b and can be connected to the vertical guide rail 1331. Tightening or loosening the adjusting screw 1332a can adjust the distance between the vertical guide rail 1331 and the adjusting nut 1332b.

[0072] In the initial state, the vertical guide rail 1331 can be perpendicular to the horizontal plane. The support plane can be parallel to the horizontal plane so that the battery pack 200 can be placed horizontally. Since the upper end of the vertical guide rail 1331 can be rotatably connected to the support frame 111, Figure 4 and Figure 5 In the direction shown, when the adjusting screw 1332a and the adjusting nut 1332b are gradually tightened to increase the distance between the lower end of the vertical guide rail 1331 and the adjusting nut 1332b, the lower end of the vertical guide rail 1331 can move to the right, so that the tray 1321 can be deflected counterclockwise by a corresponding angle. When the adjusting screw 1332a and the adjusting nut 1332b are gradually loosened to reduce the distance between the lower end of the vertical guide rail 1331 and the adjusting nut 1332b, the lower end of the vertical guide rail 1331 can move to the left, so that the tray 1321 can be deflected clockwise by a corresponding angle.

[0073] Among them, along the third direction Z, the tray 1321 has a larger size, so the end of the tray 1321 away from the vertical guide rail 1331 is prone to sagging and deformation. In actual applications, the angle adjustment component 133 mostly needs to adjust the distance between the vertical guide rail 1331 and the nut by adjusting the screw 1332a to increase the distance so that the tray 1321 deflects counterclockwise, that is, the end of the tray 1321 away from the vertical guide rail 1331 can be tilted upward to compensate for the sagging end of the tray 1321, thereby increasing the contact area between the heating film 141 and the bottom surface 1512 of the battery pack 200, which is conducive to improving the contact between the heating film 141 and the battery pack 200.

[0074] In some possible implementations, see Figures 1 to 3 As shown, the angle adjustment assembly 133 of the embodiment of the present application further includes a reinforcement beam 1333. Along the first direction X, the reinforcement beam 1333 is disposed at the upper end of the vertical guide rail 1331. The reinforcement beam 1333 is rotatably connected to the support frame 111.

[0075] The vertical guide rail 1331 of the present application can be rotatably connected to the support frame 111 through the reinforcement beam 1333. In some examples, along the second direction Y, connection holes can be provided at both ends of the reinforcement beam 1333. The support frame 111 is also provided with corresponding connection holes. The reinforcement beam 1333 and the support frame 111 can be connected by a rotating pin. Therefore, adjusting the locking member 1332 can adjust the tray 1321 to rotate clockwise or counterclockwise around the axial direction of the reinforcement beam 1333. The axial direction of the reinforcement beam 1333 is the same direction as the second direction Y.

[0076] In some possible implementations, see Figures 1 to 3 As shown, the lifting assembly 132 of the embodiment of the present application includes a sliding rod 1322 and a sliding post. The sliding rod 1322 is connected to the tray 1321. The sliding rod 1322 is slidably connected to the vertical guide rail 1331 through the sliding post.

[0077] In some examples, the vertical guide rail 1331 may be provided with a slide groove arranged along the first direction X. The slide groove has a guiding function. The driving member may drive the sliding rod 1322 to rise or fall along the slide groove via the slide column. At least a portion of the slide column may be located in the slide groove.

[0078] In some implementations, the number of vertical guide rails 1331 in the embodiment of the present application is two. The two vertical guide rails 1331 are spaced apart along the second direction Y. The sliding rod 1322 can be disposed between the two vertical guide rails 1331. Along the second direction Y, sliding posts are disposed at both ends of the sliding rod 1322.

[0079] In some examples, the lifting assembly 132 may further include a connecting rod 1323. The connecting rod 1323 may be used to connect the sliding rod 1322 and the tray 1321. To improve the stability of the tray 1321, two connecting rods 1323 may be provided. Along the second direction Y, the two connecting rods 1323 may be located at either end of the sliding rod 1322. The sliding rod 1322 may be located below the reinforcing beam 1333.

[0080] In some examples, the number of sliding posts can be set to four. Along the second direction Y, a group of sliding posts is respectively provided at both ends of the sliding rod 1322. Each group of sliding posts can include two sliding posts. The two sliding posts can be spaced apart along the first direction X.

[0081] In some possible implementations, see Figure 3As shown, along a first direction X, the drive assembly 131 of the present embodiment is located below the sliding rod 1322. The drive assembly 131 includes a screw 1311 and a rotating disk 1312. The upper end of the screw 1311 is connected to the sliding rod 1322. Clockwise or counterclockwise rotation of the rotating disk 1312 drives the screw 1311 to extend or retract. The extension or retraction of the screw 1311 drives the sliding rod 1322 to ascend or descend.

[0082] The sliding rod 1322 and the screw rod 1311 can be connected. When the rotating disk 1312 rotates clockwise, the screw rod 1311 can extend to push the sliding rod 1322 upward, so that the tray 1321 can drive the heating film 141 upward until the heating film 141 is in contact with the bottom of the battery pack 200. When the rotating disk 1312 rotates counterclockwise, the screw rod 1311 can shorten, and the sliding rod 1322 can descend together with the screw rod 1311 under the action of its own weight. Therefore, the tray 1321 can drive the heating film 141 downward, and the heating film 141 can be separated from the bottom of the battery pack 200.

[0083] In some examples, the lifting assembly 132 may further include a push-up protrusion 1324. The push-up protrusion 1324 is provided on the surface of the sliding rod 1322 facing away from the battery pack 200. As the screw rod 1311 extends or contracts, one end of the screw rod 1311 can push the push-up protrusion 1324 up or down. For example, the push-up protrusion 1324 and the sliding rod 1322 may be integrally formed.

[0084] It should be noted that when heating of the battery pack 200 is not required, the lifting assembly 132 can be lowered to a distance from the support surface, thereby reserving operating space for the forklift arm. Along the third direction Z, the forklift arm can be inserted from the end away from the vertical guide rail 1331 to operate the battery pack 200.

[0085] In some implementations, the controller 120 may include electronic components such as circuit breakers, time relays, and contactors. The controller 120 provides delay protection. For example, when the temperature of the battery pack 200 reaches a preset value, the controller 120 may power off the heating film 141 to reduce the possibility of damage to the battery pack 200 due to excessive heating.

[0086] In some possible implementations, see Figure 6 and Figure 7As shown, the support assembly 110 further includes a stacking guide post 150. The stacking guide post 150 is connected to the support frame 111. The stacking guide post 150 includes a top guide portion 151 and a fixed base 152. The fixed base 152 has a recessed portion disposed on a surface facing away from the top guide portion 151. When the support assemblies 110 are stacked along the first direction X, a portion of the top guide portion 151 on the lower layer is located within the vertical guide rail 1331 on the upper layer, while another portion of the top guide portion 151 is located within the recessed portion of the fixed base 152 on the upper layer.

[0087] The stacking guide pins 150 of the embodiment of the present application can be used to support the support frame 111 to improve the stability of the support frame 111 in supporting the battery pack 200. Furthermore, the stacking guide pins 150 can be used to stack multiple battery packs 200 and heating devices 100 along the first direction X, so that multiple battery packs 200 can be heated within the limited space of the production workshop, thereby improving space utilization in the production workshop.

[0088] In some examples, the support frame 111 may be a square structure. The number of the stacking guide posts 150 may be four. The four stacking guide posts 150 may be located at the four edge corners of the support frame 111 to improve the structural strength of the entire support frame 111.

[0089] It is understandable that parameter information such as the material and welding parameters of the support frame 111 can be set through CAE simulation (Computer Aided Engineering) to ensure that the strength of the support frame 111 can meet the use requirements.

[0090] In some examples, the support frame 111 may be provided with a forklift hole. A forklift arm may pass through the forklift hole to move the battery pack heating device 100. For example, a battery pack heating device 100 may be moved and stacked on top of another battery pack heating device 100.

[0091] In some examples, the height of the forklift hole can be lower than the height of the supporting plane in the vertical direction. Therefore, when the battery pack heating device 100 needs to be transported, two forking methods can be compatible. One is that when the battery pack 200 is not provided on the battery pack heating device 100, the forklift arm can be inserted into the forklift hole to transport the battery pack 200 heating device 100 to another location. The second is that when the battery pack 200 is provided on the battery pack heating device 100, the forklift arm can be inserted into the forklift hole to transport the battery pack heating device 100 and the battery pack 200 simultaneously, so as to save the transportation steps and reduce labor costs.

[0092] In some possible implementations, see Figure 2As shown, the battery pack heating device 100 may further include a cabinet connector 170. The cabinet connector 170 may be disposed on one of the stacking guide columns 150. The cabinet connector 170 may be used to arrange two battery pack heating devices 100 side by side along the second direction Y and connect the two battery pack heating devices 100 into a single unit to improve overall strength, thereby reducing the possibility of tipping due to multi-layer stacking and improving the safety of the battery pack heating device 100.

[0093] In some possible implementations, see Figure 5 and Figure 6 As shown, the palletizing guide column 150 further includes an intermediate vertical beam 153. Along the first direction X, the intermediate vertical beam 153 is located between the top guide portion 151 and the fixed base 152. The top guide portion 151 includes a top surface 1511 and a bottom surface 1512. Along the first direction X, the orthographic projection of the top surface 1511 is located within the orthographic projection of the intermediate vertical beam 153. The orthographic projection of the intermediate vertical beam 153 is located within the orthographic projection of the bottom surface 1512. Furthermore, the orthographic projection of the bottom surface 1512 is located within the orthographic projection of the fixed base 152.

[0094] The cross-section of the top guide portion 151 can gradually increase from the top surface 1511 to the bottom surface 1512, so that multiple inclined surfaces 1513 can be formed between the top surface 1511 and the bottom surface 1512. Therefore, when multiple battery pack heating devices 100 are stacked along the first direction X, the inclined surface 1513 of the top guide portion 151 located at the bottom can restrain the battery pack heating device 100 located at the top from sliding downward.

[0095] In some possible implementations, see Figure 4 and Figure 8 As shown, the heating assembly further includes a heat preservation layer 142. Along the first direction X, the heat preservation layer 142 is located between the tray 1321 and the heating film 141.

[0096] The heating film 141 of the present embodiment can be located between the battery pack 200 and the insulation layer 142. Therefore, most of the heat generated by the heating film 141 can be used to heat the battery pack 200, and the insulation layer 142 can store the heat while reducing the possibility of heat being lost through the insulation layer 142 toward the tray 1321.

[0097] In some examples, the insulation layer 142 may be bonded to the tray 1321. The heating film 141 may be bonded to the surface of the insulation layer 142 facing away from the tray 1321. The power of the heating film 141 is obtained through thermal simulation calculation.

[0098] In some examples, the insulation layer 142 may be, but is not limited to, foam.

[0099] In some possible implementations, see Figure 2 and Figure 3 As shown, the battery pack heating device 100 may further include a limit block 160. The limit block 160 is disposed at one end of the support frame 111 away from the lifting assembly 132. The limit block 160 is detachably connected to the support frame 111.

[0100] The stopper 160 can restrict the battery pack 200 from escaping in the third direction Z away from the vertical guide rail 1331. Therefore, when the battery pack 200 is placed in the battery pack heating device 100, the stopper 160 can reduce the possibility of the battery pack 200 sliding and causing damage to the battery pack 200, and also help improve stability and safety during transportation.

[0101] It should be noted here that the numerical values ​​and numerical ranges involved in this application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors. Those skilled in the art may consider this part of the error to be negligible.

[0102] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0103] In the description of this application, it should be understood that the terms used, such as "center", "length", "width", "thickness", "top", "bottom", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "axial", and "circumferential", indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the position or component referred to must have a specific orientation, a specific structure, and operation, and therefore should not be understood as limiting the present invention.

[0104] In the embodiments of the present application, any device or element referred to or implied must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise specifically specified.

[0105] The terms "first," "second," "third," "fourth," and so on (if any) in the description and claims of the embodiments of the present application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0106] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0107] The term "plurality" in this document refers to two or more. The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the related objects; in a formula, the character " / " indicates a "division" relationship between the related objects.

[0108] It will be understood that the various numerical numbers involved in the embodiments of the present application are merely distinctions for the convenience of description and are not intended to limit the scope of the embodiments of the present application.

[0109] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A battery pack heating device, characterized in that: include: A bracket assembly includes a support frame, wherein the support frame is used to support the battery pack; A controller, arranged on the support frame; The adjustment mechanism includes a drive assembly, a lifting assembly, and an angle adjustment assembly, wherein the drive assembly is disposed on the support frame, the angle adjustment assembly includes a vertical guide rail, and the lifting assembly includes a tray. In a first direction, the drive assembly drives the tray to be slidably connected to the vertical guide rail, and in a second direction, the angle adjustment assembly is rotatably connected to the support frame; a heating assembly, comprising a heating film, the heating film being disposed on a surface of the tray facing the battery pack, the driving assembly driving the tray to rise or fall so as to attach or separate the heating film from the battery pack, the heating film being electrically connected to the controller; The angle adjustment assembly further includes an adjustment locking piece, which is arranged on a side of the support frame close to the vertical guide rail along the third direction. The adjustment locking piece is arranged corresponding to the vertical guide rail, and the adjustment locking piece is locked or loosened to drive the vertical guide rail to move closer to or away from the inner side wall of the support frame; Along the first direction, the upper end of the vertical guide rail is rotatably connected to the support frame, and the lower end of the vertical guide rail is freely hanging under the action of its own gravity. The adjustment locking piece and the vertical guide rail are spaced apart along the third direction; the adjustment locking piece includes an adjusting screw and an adjusting nut, the adjusting nut is set on the support frame, the tail end of the adjusting screw passes through the adjusting nut and is connected to the vertical guide rail, and the adjusting screw is locked or loosened to adjust the distance between the vertical guide rail and the adjusting nut; The angle adjustment assembly further includes a reinforcement beam. Along the first direction, the reinforcement beam is arranged at the upper end of the vertical guide rail, and the reinforcement beam is rotatably connected to the support frame.

2. The battery pack heating device according to claim 1, characterized in that: The lifting assembly further comprises a sliding rod and a sliding column, wherein the sliding rod is connected to the tray, and the sliding rod is slidably connected to the vertical guide rail via the sliding column.

3. The battery pack heating device according to claim 2, characterized in that: There are two vertical guide rails, which are spaced apart along the second direction. The sliding rod is disposed between the two vertical guide rails. The sliding columns are disposed at both ends of the sliding rod along the second direction.

4. The battery pack heating device according to claim 2, characterized in that: Along the first direction, the driving assembly is located below the sliding rod. The driving assembly includes a screw rod and a rotating disk. The upper end of the screw rod is connected to the sliding rod. The rotating disk rotates clockwise or counterclockwise to drive the screw rod to extend or shorten. The screw rod extends or contracts to drive the sliding rod to rise or fall.

5. The battery pack heating device according to claim 1, characterized in that: The bracket assembly also includes a stacking guide column, which is connected to the support frame. The stacking guide column includes a top guide portion and a fixed base. A recess is provided on the surface of the fixed base facing away from the top guide portion. When the bracket assembly is stacked along the first direction, part of the top guide portion of the lower layer is located in the vertical guide rail of the upper layer, and the other part of the top guide portion is located in the recess of the fixed base of the upper layer.

6. The battery pack heating device according to claim 5, characterized in that: The stacking guide column also includes an intermediate vertical beam. Along the first direction, the intermediate vertical beam is located between the top guide portion and the fixed base. The top guide portion includes a top surface and a bottom surface. Along the first direction, the orthographic projection of the top surface is located inside the orthographic projection of the intermediate vertical beam, the orthographic projection of the intermediate vertical beam is located inside the orthographic projection of the bottom surface, and the orthographic projection of the bottom surface is located inside the orthographic projection of the fixed base.

7. The battery pack heating device according to claim 1, characterized in that: The heating assembly further includes a heat-insulating layer, and along the first direction, the heat-insulating layer is located between the tray and the heating film.

8. The battery pack heating device according to claim 1, characterized in that: It also includes a limit block, which is arranged at one end of the support frame away from the lifting assembly, and the limit block is detachably connected to the support frame.

Images