Heat dissipation device and battery pack

Abstract

This invention discloses a heat dissipation device and a battery pack. The heat dissipation device includes: a heat dissipation main body and a heat dissipation follower; a movable member, which is movably mounted on the heat dissipation main body and abuts against both the heat dissipation main body and the heat dissipation follower. The movable member applies a driving force away from the heat dissipation main body to the heat dissipation follower when moving relative to the heat dissipation main body in a first direction. The heat dissipation device of this invention, by providing a movably cooperating heat dissipation main body, heat dissipation follower, and movable member, facilitates the installation and fixation of the heat dissipation module and the battery, solving the problem of blade battery scattering caused by vehicle vibration. Simultaneously, the tight mounting of the heat dissipation module and the battery reduces the total thermal resistance of the system, improving the heat transfer effect between the heat dissipation module and the battery, and increasing the heat transfer rate.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and in particular to a heat dissipation device and a battery pack. Background Art

[0002] In the related art, a heat sink and a battery are usually provided in the battery pack, and the heat sink can dissipate heat from the battery to keep the battery pack within a safe temperature range. Among them, the installation stability of the current heat sink and the battery is relatively poor, especially when the heat sink and the blade battery are assembled, the heat sink has a poor heat dissipation effect on the blade battery, which is not conducive to achieving effective heat dissipation of the blade battery, and the blade battery is prone to loose installation, so there is room for improvement. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a heat dissipation device that can be installed together with the battery in the housing of the battery pack, and can achieve stable compression between the heat dissipation device and the battery, ensure installation stability, and improve heat dissipation efficiency.

[0004] According to an embodiment of the present invention, the heat dissipation device includes: a heat dissipation main body and a heat dissipation follower; a movable part, which can be movably installed on the heat dissipation main body and respectively abut against the heat dissipation main body and the heat dissipation follower; wherein the movable part is used to apply a driving force to the heat dissipation follower away from the heat dissipation main body when it moves in a first direction relative to the heat dissipation main body.

[0005] According to the heat dissipation device of the embodiment of the present invention, the heat dissipation device is conducive to the installation and fixation of the heat dissipation module and the battery by setting a heat dissipation main part, a heat dissipation follower and a movable part, which can solve the problem of blade battery scattering caused by vehicle vibration. At the same time, the heat dissipation module and the battery are installed tightly to reduce the total thermal resistance of the system, which is conducive to improving the heat transfer effect between the heat dissipation module and the battery and increasing the heat transfer rate.

[0006] According to some embodiments of the heat dissipation device of the present invention, the movable part includes a fastening block and a fastening connecting rod, the fastening connecting rod is rotatably installed on the fastening block and is limitedly engaged with the fastening block along the first direction, the fastening block is respectively abutted against the heat dissipation main part and the heat dissipation follower, and the fastening connecting rod is threadedly engaged with the heat dissipation main part along the first direction.

[0007] According to the heat dissipation device of some embodiments of the present invention, the fastening block is configured as a wedge-shaped block, and the thickness of the wedge-shaped block is configured to gradually decrease along the first direction, and the wedge-shaped block has a wedge-shaped inclined surface that abuts against the heat dissipation follower.

[0008] According to the heat dissipation device of some embodiments of the present invention, the fastening block includes a plurality of pressing blocks, and the plurality of pressing blocks are distributed in sequence along the axial direction of the fastening connecting rod, and the outermost one of the plurality of pressing blocks is limitedly matched with the fastening connecting rod along the first direction and the innermost one is abutted against the heat dissipation main body; wherein two adjacent pressing blocks of the plurality of pressing blocks are slidably matched through a sliding inclined surface to enable the pressing blocks to move in the radial direction of the fastening connecting rod, and enable the two adjacent pressing blocks to respectively press the heat dissipation main body and the heat dissipation follower.

[0009] According to the heat dissipation device of some embodiments of the present invention, the two ends of the pressing block are respectively provided with a first sliding slope and a second sliding slope, and two adjacent pressing blocks are slidably matched through the first sliding slope and the second sliding slope.

[0010] According to some embodiments of the heat dissipation device of the present invention, one of the fastening rod and the heat dissipation main body is configured to have a threaded hole, and the other is configured to have a threaded section, and the threaded section extends into the threaded hole along the first direction.

[0011] According to some embodiments of the heat dissipation device of the present invention, the heat dissipation main body has an installation space, the movable part and the heat dissipation follower can be movably installed in the installation space, and the heat dissipation follower is suitable for extending from the installation space under the action of the movable part.

[0012] According to some embodiments of the heat dissipation device of the present invention, the installation space includes a first movable space and a second movable space, the movable part can be movably installed in the first movable space, the heat dissipation follower can be movably installed in the second movable space, and the inner wall of the second movable space has a first guide slope, and the heat dissipation follower is suitable for moving along the first guide slope in a direction away from the heat dissipation main body.

[0013] According to the heat dissipation device of some embodiments of the present invention, the heat dissipation follower is constructed in a block shape, and the heat dissipation follower has a pressing surface and a second guiding inclined surface, the movable part is pressed against the pressing surface, and the second guiding inclined surface is slidably matched with the first guiding inclined surface; wherein the pressing surface and the second guiding inclined surface are arranged on two adjacent side surfaces of the heat dissipation follower.

[0014] According to the heat dissipation device of some embodiments of the present invention, one of the first guide slope and the second guide slope is provided with a first guide portion extending along the moving direction of the heat dissipation follower, and the other is provided with a second guide portion, and the first guide portion and the second guide portion are slidably matched.

[0015] According to the heat dissipation device of some embodiments of the present invention, there are a plurality of the first guide portions and the second guide portions corresponding to each other one by one, and the plurality of first guide portions are spaced apart and distributed in a direction perpendicular to the moving direction of the heat dissipation follower.

[0016] According to the heat dissipation device of some embodiments of the present invention, the first end of the first movable space is open, the movable part is suitable for extending from the first end into the first movable space, and the second end of the first movable space is provided with a matching block, and the movable part is movably connected to the matching block along the first direction.

[0017] The invention also provides a battery pack.

[0018] A battery pack according to an embodiment of the present invention comprises: a shell, a battery and the heat dissipation device described in any one of the above embodiments, the shell having a battery cooling groove, the battery and the heat dissipation device being installed in the battery cooling groove, and the heat dissipation device being suitable for being pressed tightly against the battery.

[0019] According to the battery pack of the embodiment of the present invention, there are multiple batteries and multiple heat dissipation devices, and the multiple batteries and the multiple heat dissipation devices are staggered and distributed in the battery cooling slot; wherein, among two adjacent batteries, one battery is against the heat dissipation main body of the heat dissipation device, and the other battery is against the heat dissipation follower.

[0020] The advantages of the battery pack and the above-mentioned battery module over the prior art are the same and will not be described in detail here.

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

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic structural diagram of a heat dissipation device according to some embodiments of the present invention;

[0024] Figure 2 is a schematic structural diagram of a heat dissipation main body according to some embodiments of the present invention;

[0025] Figure 3 is a side view of a heat dissipation main body according to some embodiments of the present invention;

[0026] Figure 4 is a front view of a heat dissipation main body according to some embodiments of the present invention;

[0027] Figure 5 is a bottom view of a heat dissipation main body according to some embodiments of the present invention;

[0028] Figure 6 is a schematic diagram of the structure of a heat dissipation follower according to some embodiments of the present invention;

[0029] Figure 7 is a schematic structural diagram of a heat dissipation follower according to some embodiments of the present invention (from another perspective);

[0030] Figure 8 is a side view of a heat dissipation follower according to some embodiments of the present invention;

[0031] Fig. 9 is a schematic diagram of the structure of movable parts according to some embodiments of the present invention;

[0032] Fig.10 is a top view of a movable member according to some embodiments of the present invention;

[0033] Fig.11 is a side view of a movable member according to some embodiments of the present invention;

[0034] Fig.12 is a schematic structural diagram of a heat dissipation device according to some other embodiments of the present invention;

[0035] Fig.13 is a schematic structural diagram of a heat dissipation device according to some other embodiments of the present invention (after the pressing block moves);

[0036] Fig.14 is a side view of a heat dissipation device according to some other embodiments of the present invention;

[0037] Fig.15 is a side view of a heat dissipation device according to some other embodiments of the present invention (after the pressing block moves);

[0038] Fig.16 is a schematic structural diagram of movable parts according to other embodiments of the present invention;

[0039] Fig.17 is a front view of a movable part according to some other embodiments of the present invention;

[0040] Fig.18 is a schematic structural diagram of a pressing block of a movable part according to other embodiments of the present invention;

[0041] Fig.19 is a schematic structural diagram of a heat dissipation main body according to some other embodiments of the present invention;

[0042] Fig. 20 is a front view of a heat dissipation main body according to some other embodiments of the present invention;

[0043] Fig.21 is a side view of a heat dissipation main body according to some other embodiments of the present invention;

[0044] Fig. 22 is a schematic structural diagram of a heat dissipation follower according to other embodiments of the present invention;

[0045] Fig.23 is an assembly diagram of a heat dissipation device and a battery in a battery cooling tank according to an embodiment of the present invention;

[0046] Fig.24 1 is an assembly diagram of a heat dissipation device and a battery in a battery cooling slot according to an embodiment of the present invention (a pressing block presses against the battery).

[0047] Reference numerals:

[0048] Heat dissipation device 100,

[0049] Heat dissipation main body 1, first activity space 11, second activity space 12, first guide slope 13, guide groove 14, matching block 15, threaded hole 16,

[0050] Heat dissipation follower 2, pressing surface 21, second guide inclined surface 22, guide block 23, avoidance notch 24,

[0051] Movable member 3, fastening block 31, pressing block 311, first sliding inclined surface 312, second sliding inclined surface 313, fastening connecting rod 32, threaded section 321;

[0052] Battery cooling tank 101, battery 102. DETAILED DESCRIPTION

[0053] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0054] Reference below Figure 1-Figure 24 The heat dissipation device 100 according to an embodiment of the present invention is described. The heat dissipation device 100 can be installed in a functional device to dissipate heat from components in the functional device, and in the specific assembly process, the heat dissipation device 100 can be pressed and installed with the components in the functional device to maintain relative stability with the corresponding components. For example, the heat dissipation device 100 can be installed in a battery pack and used for pressing and installing with the battery 102, which is not only conducive to fixing with the battery 102, but also conducive to dissipating heat and cooling the battery 102, and the structure is highly practical.

[0055] like Figure 1 and Fig.12 As shown, the heat dissipation device 100 according to the embodiment of the present invention comprises: a heat dissipation main body 1, a heat dissipation follower 2 and a movable part 3. The heat dissipation main body 1 and the heat dissipation follower 2 are both made of heat conductive materials, that is, the heat dissipation main body 1 and the heat dissipation follower 2 have good thermal conductivity. In this way, during the specific installation, the heat dissipation main body 1 and the heat dissipation follower 2 can be directly in contact with the battery 102, so that the heat generated by the battery 102 can be directly transferred to the heat dissipation main body 1 and the heat dissipation follower 2, which is beneficial for the heat dissipation main body 1 and the heat dissipation follower 2 to extract the heat generated by the battery 102, thereby facilitating the heat dissipation and cooling of the battery pack.

[0056] The movable part 3 can be movably installed on the heat dissipation main part 1, that is, the movable part 3 can move relative to the heat dissipation main part 1, such as the movable part 3 can make a linear motion on the heat dissipation main part 1, and the movable part 3 is respectively against the heat dissipation main part 1 and the heat dissipation follower 2. In this way, when the movable part 3 moves relative to the heat dissipation main part 1, the pressing state of the movable part 3 on the heat dissipation main part 1 and the heat dissipation follower 2 gradually changes with the movement of the movable part 3.

[0057] The movable member 3 is used to apply a driving force to the heat dissipation follower 2 away from the heat dissipation main member 1 when the movable member 3 moves in a first direction relative to the heat dissipation main member 1. In specific implementation, the first side of the movable member 3 can be attached to the heat dissipation main member 1, and the second side of the movable member 3 can be attached to the heat dissipation follower 2. The structure of the movable member 3 can be designed so that when the movable member 3 moves relative to the heat dissipation main member 1, the force generated by the heat dissipation main member 1 on the movable member 3 can act on the heat dissipation follower 2 through the movable member 3, thereby realizing the driving of the heat dissipation follower 2 during the movement of the movable member 3. For example, the movable member 3 can be configured to include a wedge-shaped structure, so as to utilize the characteristics of the wedge-shaped structure to drive the heat dissipation follower 2 to move relative to the heat dissipation main member 1, or the movable member 3 can be configured to include a plurality of pressing structures, so that during the movement of the movable member 3, the plurality of pressing structures can press against the heat dissipation main member 1 and the heat dissipation follower 2 respectively, that is, the heat dissipation follower 2 moves in a direction away from the heat dissipation main member 1.

[0058] Thus, the heat sink 100 in the embodiment of the present invention can be installed together with the battery 102 in the shell of the battery pack by setting the above structure, so that when the heat sink 100 can be pressed between the battery 102 and the inner wall of the shell, or between two adjacent batteries 102, the heat sink 100 can be pressed and installed with the battery 102. For example, during the specific installation, the heat sink 100 can be pressed between two adjacent batteries 102, so that the heat sink main body 1 of the heat sink 100 is pressed against one of the batteries 102, and the heat sink follower 2 of the heat sink 100 is pressed against the other battery 102, so that the movable part 3 can be driven relative to the heat sink main body 1, so that the heat sink main body 1 and the heat sink follower 2 are driven to move in a direction away from each other under the action of the movable part 3, so that the heat sink main body 1 and the heat sink follower 2 are pressed against the two adjacent batteries 102 respectively, so as to facilitate the pressing and fixing of the battery 102.

[0059] In this way, it is not only beneficial to reduce the fixed structure of the battery 102, but also to optimize the installation economy of the battery 102. The battery 102 referred to in the present invention may be a single cell or a battery module, and the single cell may be a blade battery. In particular, when the heat sink 100 is suitable for the blade battery of the vehicle, the blade battery and the heat sink 100 can be installed together in the cooling groove of the battery pack, and the blade battery is clamped by the heat sink 100. When the cooling groove is placed upside down, the blade battery will not fall, and the problem of blade battery scattering caused by vehicle vibration can be effectively suppressed. The pressure generated by the clamping of the heat sink 100 will also enhance the heat transfer between the blade batteries in the horizontal direction. The heat will be transferred from the bottom of each heat sink 100 to the cooling groove, or from the side to the cooling groove. At the same time, the pressure generated by the clamping will reduce the contact thermal resistance caused by the air gap, so that the total thermal resistance of the system is reduced and the heat transfer rate is increased.

[0060] According to the heat dissipation device 100 of the embodiment of the present invention, the heat dissipation device 100 is conducive to the installation and fixation of the heat dissipation module and the battery 102 by setting a movable heat dissipation main part 1, a heat dissipation follower 2 and a movable part 3, which can solve the problem of blade battery scattering caused by vehicle vibration. At the same time, the heat dissipation module and the battery 102 are pressed and installed to reduce the total thermal resistance of the system, which is conducive to improving the heat transfer effect between the heat dissipation module and the battery 102 and increasing the heat transfer rate.

[0061] In some embodiments, Figure 1 and Fig.12 As shown, the movable member 3 includes a fastening block 31 and a fastening connecting rod 32 (wherein, Fig.12The middle fastening block 31 includes a plurality of pressing blocks 311), wherein the fastening block 31 is constructed in a block shape and has a plurality of side surfaces, wherein two side surfaces of the plurality of side surfaces of the fastening block 31 are respectively used to be connected to the heat dissipation main body 1 and the heat dissipation follower, so that when the fastening block 31 moves relative to the heat dissipation main body 1, the heat dissipation follower can be driven to move in a direction away from the heat dissipation main body 1.

[0062] The fastening link 32 is rotatably mounted on the fastening block 31, that is, the fastening link 32 and the fastening block 31 can rotate relative to each other, that is, the two do not rotate synchronously, so that when the fastening link 32 rotates relative to the heat dissipation main body 1, the fastening block 31 does not rotate with the fastening link 32. The fastening link 32 and the fastening block 31 are limitedly matched along the first direction. It should be noted that the fastening link 32 can be installed by passing through the fastening block 31, that is, a through hollow channel is set in the fastening block 31, so that the fastening link 32 and the fastening block 31 can rotate relative to each other, and the outer peripheral wall of the fastening link 32 and the inner peripheral wall of the hollow channel of the fastening block 31 are provided with a limiting structure, so that the fastening link 32 can drive the fastening block 31 to move along the axial direction.

[0063] It should be noted that the first direction in the present invention can be set to be along the axial direction of the fastening connecting rod 32, and the first direction is the movement and matching direction of the fastening connecting rod 32 and the heat dissipation main body 1.

[0064] In other words, the fastening link 32 is movably matched with the heat dissipation main body 1 along the first direction, such as the fastening link 32 is threadedly matched with the heat dissipation main body 1 along the first direction, so that when the fastening link 32 rotates, the fastening link 32 can move in the first direction relative to the heat dissipation main body 1. In this way, when the heat dissipation module is installed, the fastening link 32 can be driven to move in the first direction relative to the heat dissipation main body 1, so that the fastening block 31 can move relative to the heat dissipation main body 1 and the heat dissipation follower 2 under the drive of the fastening link 32, so that the pressing state of the fastening block 31 on the heat dissipation main body 1 and the heat dissipation follower 2 gradually changes during the movement, and it is conducive to the heat dissipation follower moving in the direction away from the heat dissipation main body 1, thereby facilitating the heat dissipation device 100 to press the battery 102.

[0065] In some embodiments, the fastening block 31 is configured as a wedge-shaped block, and the thickness of the wedge-shaped block is configured to gradually decrease along the first direction, such as Fig. 9 , Fig.10 and Fig.11 As shown, the fastening block 31 is constructed as a long strip block structure, and the first direction is along the length direction of the fastening block 31, that is, the thickness of the fastening block 31 in the length direction gradually decreases, as shown in FIG. Fig. 9 As shown, the thickness of the fastening block 31 gradually decreases from the left end to the right end.

[0066] The wedge block has a wedge-shaped inclined surface that abuts against the heat sink follower 2, that is, the side of the wedge block facing the heat sink follower 2 is configured as a wedge-shaped inclined surface. Therefore, through the structural design of the wedge block, when the fastening connecting rod 32 moves relative to the heat sink main body 1 along the first direction, the wedge block moves with the fastening connecting rod 32, so that the positions of different thicknesses of the wedge block abut against the heat sink main body 1 and the heat sink follower 2.

[0067] It should be noted that after the heat dissipation main body 1 and the heat dissipation follower 2 are installed and matched, an insertion space is defined between the two, and the wedge block extends into the insertion space. As the fastening connecting rod 32 moves, the thickness of the wedge block extending into the insertion space gradually increases, thereby causing the pressing force of the wedge block on the heat dissipation follower 2 to gradually increase, thereby driving the heat dissipation follower 2 to move in a direction away from the heat dissipation main body 1, thereby facilitating the compression effect of the heat dissipation device 100 on the battery 102, ensuring the installation stability of the battery 102, and improving the heat exchange efficiency.

[0068] In other embodiments, Fig.14 and Fig.15 As shown, the fastening block 31 includes a plurality of pressing blocks 311, and the plurality of pressing blocks 311 are sequentially distributed along the axial direction of the fastening connecting rod 32, and are arranged as shown in FIG. Fig.15 In the figure, the multiple pressure blocks 311 have different heights along the radial direction of the fastening link 32, that is, the multiple pressure blocks 311 are sequentially inserted into the fastening link 32, and each pressure block 311 is rotatably matched with the fastening link 32, and at the same time, the outermost one of the multiple pressure blocks 311 is limitedly matched with the fastening link 32 along the first direction and the innermost one is against the heat dissipation main body 1.

[0069] like Fig.12 and Fig.13 As shown, multiple pressure blocks 311 are sequentially inserted into the fastening link 32 along the left and right directions, wherein the right end of the fastening link 32 is movably matched with the heat dissipation main body 1 along the first direction, and a matching block 15 is provided at the right end position of the heat dissipation main body 1, and the pressure block 311 located on the far right is abutted against the matching block 15 in the first direction, and at the same time, the pressure block 311 located on the far left is limitedly matched with the fastening link 32 in the first direction, so that when the fastening link 32 moves along the first direction, the fastening link 32 drives the pressure block 311 on the far left to move in the first direction, thereby causing the pressure block 311 on the far left to apply a clamping force to the other pressure blocks 311.

[0070] Among them, two adjacent pressing blocks 311 of the plurality of pressing blocks 311 are slidably matched through the sliding inclined surface, so that the pressing blocks 311 can move in the radial direction of the fastening connecting rod 32. That is, through the design of the sliding inclined surface, when the pressing block 311 located on the far left presses other pressing blocks 311, the other pressing blocks 311 move upward or downward in the radial direction under the pressing action of the matching block 15, and the two adjacent pressing blocks 311 respectively press the heat dissipation main component 1 and the heat dissipation follower 2.

[0071] In this way, through the cooperation design of the plurality of pressing blocks 311 and the sliding inclined surface, when the operator drives the fastening connecting rod 32 to rotate, Fig.13 As shown, one of the two adjacent pressing blocks 311 moves upward to be pressed against the heat dissipation main body 1, and the other moves downward to be pressed against the heat dissipation follower 2, and as the fastening link 32 gradually rotates, the greater the movement amplitude of the two adjacent pressing blocks 311, the greater the movement amplitude of the heat dissipation follower 2 relative to the heat dissipation main body 1, thereby being more conducive to achieving the pressing of the battery 102 and improving the installation stability of the battery 102 and the heat dissipation device 100.

[0072] In some embodiments, the two ends of the pressing block 311 are respectively provided with a first sliding inclined surface 312 and a second sliding inclined surface 313, and two adjacent pressing blocks 311 are slidably matched through the first sliding inclined surface 312 and the second sliding inclined surface 313, wherein the first sliding inclined surface 312 and the second sliding inclined surface 313 are inclined in different directions relative to the fastening link 32, and the two are inclined at the same angle relative to the horizontal plane fastening link 32, so that the pressing block 311 is constructed as an isosceles trapezoidal block, such as Fig.18 As shown, the first sliding slope 312 is configured as the left end surface of the pressing block 311 and is tilted upward and leftward, while the second sliding slope 313 is configured as the right end surface of the pressing block 311 and is tilted upward and rightward, and the inclination angles of the two are the same.

[0073] In the specific assembly, the arrangement directions of two adjacent pressing blocks 311 are different, such as one is arranged upward, that is, the upper bottom of the trapezoidal block is facing upward, and the other is arranged downward, that is, the upper bottom of the trapezoidal block is facing downward, so that a plurality of pressing blocks 311 are staggered and penetrated in the fastening connecting rod 32 in different arrangement directions. In this way, when the ends of the two adjacent pressing blocks 311 that are away from each other are subjected to pressure, the two pressing blocks 311 move in different directions under the cooperation of the first sliding inclined surface 312 and the second sliding inclined surface 313, thereby driving the heat dissipation follower 2 to move relative to the heat dissipation main body 1, and realizing the pressing effect on the battery 102.

[0074] Specifically, Fig.13As shown, the fastening link 32 is provided with four pressing blocks 311, wherein the leftmost pressing block 311 is axially limited with the fastening link 32, and the other three can slide in the up-down direction, as shown in FIG. Fig.13 As shown, when the fastening link 32 rotates, the two spaced-apart pressing blocks 311 move downward under the action of the sliding slope to abut against the heat dissipation follower 2, and the other pressing block 311 located between the two pressing blocks 311 moves upward under the action of the sliding slope to abut against the heat dissipation active component, thereby driving the heat dissipation follower 2 and the heat dissipation active component away from each other, thereby achieving a pressing effect on the battery 102.

[0075] In some embodiments, one of the fastening link 32 and the heat dissipation main body 1 is configured to have a threaded hole 16, and the other is configured to have a threaded section 321, and the threaded section 321 extends into the threaded hole 16 along the first direction. In other words, the threaded hole 16 can be provided in the fastening link 32, and the threaded section 321 can be provided in the heat dissipation main body 1, or the threaded section 321 can be provided in the fastening link 32, and the threaded hole 16 can be provided in the heat dissipation main body 1, so as to facilitate the fastening link 32 and the heat dissipation main body 1, so that when the fastening link 32 rotates relative to the heat dissipation main body 1, the fastening link 32 can move in the axial direction.

[0076] Among them, Figure 2 and Fig.14 As shown, the heat dissipation main body 1 is provided with a matching block 15, and the matching block 15 can be provided with a threaded hole 16 or a threaded section 321. Therefore, in the specific design, an external thread structure can be provided at the end of the fastening connecting rod 32 to form a threaded section 321, and a threaded hole 16 can be provided in the matching block 15, so that the end of the fastening connecting rod 32 can extend into the threaded hole 16 of the matching block 15 to achieve a threaded connection between the two; or a threaded hole 16 opened in the axial direction can be provided at the end of the fastening connecting rod 32, and a stud can be provided on the end face of the matching block 15, that is, the outer peripheral wall of the stud is configured as a threaded section 321, so that when the fastening connecting rod 32 is installed and matched with the heat dissipation main body 1, the stud can extend into the threaded hole 16 to achieve a threaded connection. Therefore, it can be ensured that the fastening connecting rod 32 can rotate relative to the heat dissipation main body 1, and during the rotation process, the fastening connecting rod 32 can move along the first direction.

[0077] In some embodiments, the heat dissipation main body 1 has an installation space, and the movable part 3 and the heat dissipation follower 2 can be movably installed in the installation space. The installation space is an open space, that is, the movable part 3 and the heat dissipation follower 2 can be installed in the installation space from an open position, and the heat dissipation follower 2 is suitable for extending from the installation space under the action of the movable part 3.

[0078] Among them, Figure 3 and Fig.14 , Fig.15As shown, the installation space is open downward and to the right, and at the same time, the end of the installation space is also open, so that during specific installation, the movable member 3 can be extended from the end of the heat dissipation main member 1 into the installation space, and the heat dissipation follower 2 can be installed into the installation space from the lower right side of the heat dissipation main member 1, that is, in the installation space, the movable member 3 is located on the inner side of the heat dissipation follower 2, and the heat dissipation follower 2 is located on the outer side of the movable member 3. Therefore, in the process of the movable member 3 gradually penetrating into the installation space from the end of the heat dissipation main member 1, the movable member 3, the fastening connecting rod 32 and the fastening block 31 are used in combination to generate a driving force to the lower right for the heat dissipation follower 2, so that the heat dissipation follower 2 gradually extends from the installation space, thereby achieving a pressing effect on the battery 102.

[0079] In the present invention, the movable part 3 and the heat dissipation follower 2 are installed in the installation space between the heat dissipation bodies, and can be installed together with the battery 102 in the battery cooling slot 101 of the battery pack. In this way, the movable part 3 and the heat dissipation follower 2 do not need to occupy too much additional space, and are conducive to reducing the overall structural size of the heat dissipation device 100. At the same time, the movable part 3 and the heat dissipation follower 2 can move in a specific direction under the action of the structural setting in the installation space, and then the heat dissipation follower 2 can be extended in the target direction, thereby achieving precise compression of the battery 102.

[0080] In some embodiments, the installation space includes a first activity space 11 and a second activity space 12. Fig.19 As shown, the first activity space 11 is connected to the second activity space 12, and the first activity space 11 is located above the second activity space 12, wherein both ends of the first activity space 11 are open, and at the same time, the lower right side of the second activity space 12 is open. Fig.14 and Fig.15 As shown, the movable part 3 can be installed from the end of the first movable space 11 into the first movable space 11 so that the movable part 3 is located above the second movable space 12. At the same time, the heat dissipation follower 2 can be installed from the lower right side into the second movable space 12 so that the heat dissipation follower 2 is located below the movable part 3. In this way, the upper side surface of the movable part 3 is in contact with the upper wall surface of the first movable space 11, and the lower side surface of the movable part 3 is in contact with the upper side surface of the heat dissipation follower 2.

[0081] The movable member 3 is movable in the first movable space 11 in the length direction of the first movable space 11, that is, the movable member 3 can be extended in or extended in the length direction of the first movable space 11, and at the same time, the heat dissipation follower 2 can be extended in or extended from the lower right side of the heat dissipation main body 1. Therefore, when the operator gradually extends the movable member 3 from the first movable space 11, the heat dissipation follower 2 is gradually driven downward and extended from the second movable space 12 by using the wedge block or multiple pressing blocks 311 in the form of sliding inclined surface cooperation, so as to realize the movement of the heat dissipation follower 2 in the direction away from the heat dissipation active member.

[0082] like Figure 2 and Fig.19 As shown, the inner wall of the second movable space 12 has a first guiding slope 13, and the heat dissipation follower 2 is suitable for moving along the first guiding slope 13 in a direction away from the heat dissipation main body 1. The first guiding slope 13 is designed according to actual guiding requirements. For example, the first guiding slope 13 is designed to be inclined downward and rightward, so that when the movable part 3 presses the heat dissipation follower 2 downward, the heat dissipation follower 2 extends toward the lower right side under the guiding effect of the first guiding slope 13, thereby achieving a pressing effect with the battery 102.

[0083] In some embodiments, Figure 6 and Fig. 22 As shown, the heat dissipation follower 2 is block-shaped and has four side surfaces in the circumferential direction, wherein the heat dissipation follower 2 has a pressing surface 21 and a second guiding inclined surface 22, and the pressing surface 21 and the second guiding inclined surface 22 are arranged on two adjacent side surfaces of the heat dissipation follower 2, such as Fig. 22 As shown, the upper side surface of the heat dissipation follower 2 is configured as a pressing surface 21 , and the left side surface of the heat dissipation follower 2 is configured as a second guiding inclined surface 22 .

[0084] Therefore, after the movable part 3 and the heat dissipation follower 2 are installed in the installation space at the same time, the lower side surface of the movable part 3 fits with the pressing surface 21, thereby realizing the driving effect on the heat dissipation follower 2. At the same time, the first guide bevel 13 fits with the second guide bevel 22, and the two can be slidably matched. In this way, under the pressing effect of the movable part 3 on the heat dissipation follower 2, the heat dissipation follower 2 can be extended from the second movable space 12 along the first guide bevel 13, thereby realizing the squeezing effect on the battery 102.

[0085] In some embodiments, one of the first guide slope 13 and the second guide slope 22 is provided with a first guide portion extending along the moving direction of the heat dissipation follower 2, and the other is provided with a second guide portion, and the first guide portion and the second guide portion are slidably matched. Thus, when the heat dissipation follower 2 slides relative to the heat dissipation main body 1, the first guide slope 13 and the second guide slope 22 can play a guiding role, and the first guide portion and the second guide portion can also play a guiding role, thereby achieving a double guiding effect, ensuring that the heat dissipation follower 2 can slide in a specific direction.

[0086] The first guide portion can be configured as a guide groove 14, and the guide groove 14 is extended along the sliding direction of the heat dissipation follower 2. Meanwhile, the second guide portion can be configured as a guide block 23, and the guide block 23 can extend into the guide groove 14 for sliding cooperation. After the guide block 23 cooperates with the guide groove 14, it can play a role of limiting to prevent the sliding direction of the heat dissipation follower 2 from deviating. Figure 2 As shown, the first guide slope 13 is provided with a guide groove 14, and the guide groove 14 is formed by being concave downward on the first guide slope 13. Figure 7 and Figure 8 As shown, the second guide slope 22 is provided with a guide block 23 , and the guide block 23 is protruded on the second guide slope 22 , thereby facilitating the heat dissipation follower 2 to move smoothly under the sliding cooperation of the guide block 23 and the guide groove 14 .

[0087] In some embodiments, there are multiple first guide portions and multiple second guide portions, and the multiple first guide portions and the multiple second guide portions slide together in a one-to-one correspondence. That is, the heat dissipation main body 1 and the heat dissipation follower 2 can slide together through multiple groups of guide blocks 23 and guide grooves 14, so that the heat dissipation follower 2 can achieve effective guiding effect at multiple positions during the sliding process.

[0088] The plurality of first guide portions are spaced apart and distributed in a direction perpendicular to the moving direction of the heat dissipation follower 2, such as Figure 2 As shown, two guide grooves 14 are provided on the first guide slope 13, and the two guide grooves 14 are spaced apart along the length direction of the first guide slope 13, and as shown in FIG. Figure 7 As shown, two guide blocks 23 are provided on the second guide slope 22 , and the two guide blocks 23 are spaced apart along the length direction of the second guide slope 22 , so that the heat dissipation main body 1 and the heat dissipation follower 2 can be movably matched through the two guide blocks 23 and the two guide grooves 14 .

[0089] In some embodiments, the first end of the first movable space 11 is open, the movable member 3 is adapted to extend from the first end into the first movable space 11, and a matching block 15 is provided at the second end of the first movable space 11, and the movable member 3 is movably connected to the matching block 15 along the first direction. Figure 2 and Fig.19As shown, the left end of the first activity space 11 is open, and the right end of the first activity space 11 is provided with a matching block 15, and the matching block 15 is provided with a threaded hole 16, the movable member 3 can be inserted from the left end, and the fastening connecting rod 32 is extended into the threaded hole 16 of the matching block 15 to realize the active connection between the fastening connecting rod 32 and the heat dissipation main body 1, wherein, as Figure 6 As shown, an escape notch 24 is provided on the upper side of the right end of the heat dissipation follower 2 , and the matching block 15 is suitable for being installed in the escape notch 24 .

[0090] The invention also provides a battery pack.

[0091] According to the battery pack of the embodiment of the present invention, Fig.23 and Fig.24 As shown, it includes: a housing, a battery 102 and a heat dissipation device 100 of any of the above embodiments, the housing has a battery cooling slot 101, the battery 102 and the heat dissipation device 100 are installed in the battery cooling slot 101, and the heat dissipation device 100 is suitable for pressing against the battery 102. Among them, the battery pack can be a power battery pack, and the battery 102 can be configured as a blade battery.

[0092] Therefore, when the battery 102 and the heat dissipation device 100 are installed in the battery pack of the embodiment of the present invention, the heat dissipation device 100 is provided with a movable heat dissipation main part 1, a heat dissipation follower 2 and a movable part 3, which is conducive to the installation and fixation of the heat dissipation module and the battery 102, and can solve the problem of blade battery scattering caused by vehicle vibration. At the same time, the heat dissipation module and the battery 102 are pressed and installed to reduce the total thermal resistance of the system, which is conducive to improving the heat transfer effect between the heat dissipation module and the battery 102 and increasing the heat transfer rate.

[0093] In some embodiments, Fig.23 and Fig.24 As shown, there are multiple batteries 102 and heat sinks 100, and the multiple batteries 102 and the multiple heat sinks 100 are staggered and distributed in the battery cooling slot 101. That is, there is a heat sink 100 between every two adjacent batteries 102, and there is a battery 102 between every two adjacent heat sinks 100.

[0094] Among the two adjacent batteries 102, one battery 102 abuts against the heat dissipation main body 1 of the heat dissipation device 100, and the other battery 102 abuts against the heat dissipation follower 2. In this way, when the driving movable member 3 moves toward the first movable space 11, the heat dissipation follower 2 moves relative to the heat dissipation main body 1, so that the heat dissipation follower 2 and the heat dissipation main body 1 respectively press the two adjacent batteries 102, thereby facilitating the stability of the installation of the battery 102. Therefore, the pressure generated by the clamping of the heat dissipation device 100 will also enhance the heat transfer between the blade batteries in the lateral direction, and the heat will be transferred from the bottom of each heat dissipation device 100 to the cooling groove, or from the side to the cooling groove. At the same time, the pressure generated by the clamping will reduce the contact thermal resistance caused by the air gap, so that the total thermal resistance of the system is reduced and the heat transfer rate is increased.

[0095] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0096] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0097] In the description of the present invention, "plurality" means two or more.

[0098] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0099] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0101] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heat dissipation device, characterized in that: include: A heat dissipation main body and a heat dissipation follower; A movable part, which is movably mounted on the heat dissipation main part and respectively abuts against the heat dissipation main part and the heat dissipation follower; wherein The movable member is used to apply a driving force to the heat dissipation follower to move away from the heat dissipation main member when the movable member moves in a first direction relative to the heat dissipation main member; The movable part includes a fastening block and a fastening connecting rod, the fastening connecting rod is rotatably mounted on the fastening block and is limitedly matched with the fastening block along the first direction, the fastening block is respectively against the heat dissipation main part and the heat dissipation follower, and the fastening connecting rod is threadedly matched with the heat dissipation main part along the first direction; the first direction is set along the axial direction of the fastening connecting rod; The fastening block includes a plurality of pressing blocks, which are sequentially distributed along the axial direction of the fastening connecting rod, and the outermost one of the plurality of pressing blocks is limitedly matched with the fastening connecting rod along the first direction and the innermost one is against the heat dissipation main body; wherein, Two adjacent pressing blocks among the plurality of pressing blocks are slidably matched through sliding inclined surfaces so that the pressing blocks can move in the radial direction of the fastening connecting rod, and the two adjacent pressing blocks can respectively press the heat dissipation main body and the heat dissipation follower.

2. The heat dissipation device according to claim 1, characterized in that: The fastening block is configured as a wedge-shaped block, and the thickness of the wedge-shaped block is configured to gradually decrease along the first direction, and the wedge-shaped block has a wedge-shaped inclined surface that abuts against the heat dissipation follower.

3. The heat dissipation device according to claim 1, characterized in that: The two ends of the pressing block are respectively provided with a first sliding inclined surface and a second sliding inclined surface, and two adjacent pressing blocks are slidably matched through the first sliding inclined surface and the second sliding inclined surface.

4. The heat dissipation device according to claim 1, characterized in that: One of the fastening link and the heat dissipation main body is configured to have a threaded hole, and the other is configured to have a threaded section, and the threaded section extends into the threaded hole along the first direction.

5. The heat dissipation device according to any one of claims 1 to 4, characterized in that: The heat dissipation main body has an installation space, the movable part and the heat dissipation follower can be movably installed in the installation space, and the heat dissipation follower is suitable for extending out from the installation space under the action of the movable part.

6. The heat dissipation device according to claim 5, characterized in that: The installation space includes a first movable space and a second movable space, the movable part can be movably installed in the first movable space, the heat dissipation follower can be movably installed in the second movable space, and the inner wall of the second movable space has a first guide slope, and the heat dissipation follower is suitable for moving along the first guide slope in a direction away from the heat dissipation main body.

7. The heat dissipation device according to claim 6, characterized in that: The heat dissipation follower is block-shaped and has a pressing surface and a second guiding inclined surface. The movable member is pressed against the pressing surface, and the second guiding inclined surface is slidably matched with the first guiding inclined surface. in The pressing surface and the second guiding inclined surface are arranged on two adjacent side surfaces of the heat dissipation follower.

8. The heat dissipation device according to claim 7, characterized in that: One of the first guide slope and the second guide slope is provided with a first guide portion extending along the moving direction of the heat dissipation follower, and the other is provided with a second guide portion, and the first guide portion and the second guide portion are slidably matched.

9. The heat dissipation device according to claim 8, characterized in that: There are a plurality of the first guide portions and the second guide portions corresponding to each other one by one, and the plurality of the first guide portions are spaced apart and distributed in a direction perpendicular to the moving direction of the heat dissipation follower.

10. The heat dissipation device according to claim 6, characterized in that: The first end of the first movable space is open, the movable member is suitable for extending from the first end into the first movable space, and a matching block is provided at the second end of the first movable space, and the movable member is movably connected to the matching block along the first direction.

11. A battery pack, characterized in that: include: A shell, a battery and a heat dissipation device as described in any one of claims 1 to 10, wherein the shell has a battery cooling groove, the battery and the heat dissipation device are installed in the battery cooling groove, and the heat dissipation device is suitable for being pressed against the battery.

12. The battery pack according to claim 11, characterized in that: There are multiple batteries and multiple heat sinks, and the multiple batteries and multiple heat sinks are staggered and distributed in the battery cooling tank; Among the two adjacent batteries, one battery abuts against the heat dissipation main body of the heat dissipation device, and the other battery abuts against the heat dissipation follower.

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