A battery pack adjustable heat dissipation device

Abstract

One or more embodiments of the present specification provide an adjustable heat dissipation device for a battery pack, including a base plate, a bracket being provided on the base plate, a plurality of mounting slots being provided on the bracket, a heat sink being provided between the bracket and the base plate, a plurality of heat dissipation tubes being arranged and connected to the upper end of the heat sink in sequence, a slot frame being provided on the heat sink in each mounting slot, a partition frame being provided in the heat sink, and when the battery cells are inserted and installed along the mounting slots, the slot frames are pressed against to drive the partition frames to be pressed downward to divide the heat sink into a plurality of bottom heat dissipation areas, the coolant flows through the bottom heat dissipation area and the heat dissipation tubes above it in sequence, and then flows to the adjacent bottom heat dissipation area and the heat dissipation tubes above it, and when some battery cell positions are vacant, missing or frequently disassembled, the partition frame at that location elastically resets and moves upward to block the flow of the bottom heat dissipation area and the heat dissipation tube at that location, and directly flows to the bottom heat dissipation area and the heat dissipation tube at the next adjacent battery cell position.

Description

Technical Field

[0001] One or more embodiments of the present specification relate to the field of battery pack technology, and in particular, to an adjustable heat dissipation device for a battery pack. Background Art

[0002] Battery pack refers to a combination of batteries in a certain shape that are packaged, encapsulated and assembled into a battery pack, which is an important energy storage component. As people's awareness and trend of environmental protection become more and more serious, battery packs are widely used, especially in electric vehicles. As the energy density of batteries continues to increase, the thermal management problem of packs becomes increasingly prominent. The cooling performance of batteries directly affects the efficiency and stable use of batteries. At present, there are four conventional cooling and heat dissipation methods: natural cooling, forced air cooling, liquid cooling, and direct cooling. Among them, liquid cooling is currently a more common and preferred heat dissipation method, but the flexibility and adjustability of liquid cooling is relatively poor. After the initial design, a complete fixed circulation channel for the entire pack is formed for the circulation of coolant for heat dissipation. Battery packs are often assembled as a combination of multiple cells, that is, some of the cell positions may be vacant, missing, or some of the cells may be abnormally disassembled, so that the liquid cooling channels at the corresponding positions begin to become redundant, so that the efficiency of circulating liquid cooling is obviously not optimized, which is not conducive to the further efficient and flexible operation and heat dissipation of battery pack liquid cooling, and is not enough to meet higher practical requirements. Summary of the invention

[0003] In view of this, the purpose of one or more embodiments of the present specification is to propose an adjustable heat dissipation device for a battery pack, so as to realize the function of automatically and flexibly adjusting and adapting the liquid cooling of the battery pack to the changes in the assembly position or quantity of different battery cells.

[0004] Based on the above purpose, one or more embodiments of this specification provide a battery pack adjustable heat dissipation device, including:

[0005] The heat dissipation tube is a heat dissipation device, and a heat dissipation device is used to dissipate heat from the bottom of the body to the bottom of the body, so that the heat dissipation tube can be connected with the heat dissipation tube on the bottom of the body to the heat dissipation tube.

[0006] Preferably, the heat dissipation pipe is designed to be in a serpentine shape.

[0007] Preferably, one end of the heat dissipation pipe is connected to the liquid outlet of the bottom heat dissipation area below it, and the other end is connected to the liquid inlet of the adjacent bottom heat dissipation area.

[0008] Preferably, the partition frame includes a fixed enclosure, a movable enclosure, a vertical partition, and a transverse partition. The fixed enclosure is fixed to the inner bottom end of the heat sink, the movable enclosure is inserted into the top end of the fixed enclosure, and an elastic member is connected between the fixed enclosure so that it can be telescopically slid up and down along the fixed enclosure. The vertical partition is fixed to the top end of the movable enclosure, and the transverse partition is horizontally fixed between the vertical partition and the movable enclosure. The top end of the vertical partition passes through the heat sink to be fixedly connected to the slot frame. When the transverse partition elastically moves up and resets with the movable enclosure, it closes and blocks the corresponding bottom heat dissipation area and the heat dissipation pipe flow.

[0009] Preferably, a plurality of leakage holes are provided on the transverse partition.

[0010] Preferably, the elastic member is a plurality of groups of springs.

[0011] Preferably, the slot frame includes a bottom ring frame and a connecting piece. The bottom ring frame is provided with a mounting groove to fit around the outer periphery of the bottom end of the battery cell. The connecting piece is fixed to the inner side of the bottom ring frame. The bottom end of the bottom ring frame is fixed to the top of the vertical partition that passes through the heat dissipation plate.

[0012] Preferably, the connecting piece is made of a heat-conducting material so as to be able to horizontally fit the top of the heat sink to conduct heat.

[0013] Preferably, a temperature sensor and an image sensor are provided at the bottom end of the top plate to sense the position of each battery cell respectively.

[0014] From the above, it can be seen that one or more embodiments of the present specification provide an adjustable heat dissipation device for a battery pack, which is provided by setting a bottom plate, a bracket is provided on the bottom plate, and a plurality of mounting grooves are provided on the bracket for correspondingly inserting and installing battery cells to be assembled into a battery pack, a heat sink is provided between the bracket and the bottom plate, the bottom end surface of the battery cell passes through the mounting groove to fit against the top of the heat sink, a plurality of heat pipes are sequentially arranged and connected to the upper end of the heat sink, and the heat pipes correspondingly fit against the side end surfaces of each battery cell, a slot frame is correspondingly provided in each mounting groove on the heat sink, a partition frame is provided in the heat sink, and the heat sink passes through the top of the partition frame to be fixedly connected to the slot frame, and coolant circulates in the heat sink and the heat pipe, so that when the battery cell is inserted and installed along the mounting groove, the slot frame is pressed to drive the partition frame to be pressed down, so as to divide the heat sink into a plurality of bottom heat dissipation areas, and each bottom heat dissipation area just corresponds to the bottom end surface of each battery cell in sequence, so The coolant flows through the bottom heat dissipation area and the heat pipe above it in sequence, and then flows to the adjacent bottom heat dissipation area and the heat pipe above it to form a complete circulation channel for the entire pack, so as to fully circulate and dissipate the bottom and side surfaces of each battery cell. When some battery cells are vacant, missing or often disassembled, the partition at this position will naturally elastically reset and move upward to block the flow of the bottom heat dissipation area and the heat pipe at this location, that is, the coolant is equivalent to skipping the circulation at this location and directly flowing to the bottom heat dissipation area and the heat pipe at the next adjacent battery cell position, thereby automatically eliminating redundant liquid cooling channels, so that the efficiency of the circulating liquid cooling is relatively optimized, so that the battery pack liquid cooling heat dissipation can be automatically and flexibly adjusted to adapt to changes in the assembly position or quantity of different battery cells, so as to facilitate the further efficient and flexible operation and heat dissipation of the battery pack liquid cooling. At the same time, a top plate is provided on the top of the bracket for protective packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate one or more embodiments of the present specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of the present specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the structure of a partition frame according to an embodiment of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure when part of the partition frame of the embodiment of the present invention is moved upward;

[0019] Figure 4A schematic diagram of the structure of a slot frame according to an embodiment of the present invention;

[0020] The solid arrows indicate the direction of coolant flow.

[0021] In the figure: 1, bottom plate; 2, bracket; 3, mounting groove; 4, battery cell; 5, heat sink; 51, bottom heat dissipation area; 6, heat pipe; 7, slot frame; 71, bottom ring frame; 72, connecting plate; 8, partition frame; 81, fixed enclosure; 82, movable enclosure; 83, vertical partition; 84, horizontal partition; 9, top plate. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with specific embodiments.

[0023] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] A battery pack adjustable heat dissipation device, such as Figures 1 to 4As shown, it includes a bottom plate 1, a bracket 2 is provided on the bottom plate 1, and a plurality of mounting grooves 3 are provided on the bracket 2 for correspondingly inserting and installing the battery cell 4. A heat sink 5 is provided between the bracket 2 and the bottom plate 1, and the bottom end surface of the battery cell 4 passes through the mounting groove 3 to fit against the top of the heat sink 5. The upper end of the heat sink 5 is sequentially arranged and connected with a plurality of heat dissipation pipes 6, and the heat dissipation pipes 6 are correspondingly fitted against the side end surface of each battery cell 4. A slot frame 7 is correspondingly provided in each mounting groove 3 on the heat sink 5, and a partition frame 8 is provided in the heat sink 5. The top of the partition frame 8 passes through the heat sink 5 to fit against the slot frame 7. The cooling liquid is fixedly connected, and the cooling plate 5 and the cooling tube 6 are circulated with cooling liquid. When the battery cell 4 is inserted and installed along the installation groove 3, the groove frame 7 is pressed to drive the partition frame 8 to press down, so as to divide the cooling plate 5 into a plurality of bottom cooling areas 51, which are used to cool the bottom end surfaces of each battery cell 4, so that the cooling liquid flows through the bottom cooling area 51 and the cooling tube 6 above it, and the adjacent bottom cooling area 51 and the cooling tube 6 above it in sequence. The partition frame 8 is elastically reset and moved upward to block the flow of the corresponding bottom cooling area 51 and the cooling tube 6. A top plate 9 is provided on the top of the bracket 2.

[0025] The present invention is provided with a bottom plate 1, a bracket 2 is provided on the bottom plate 1, a plurality of mounting grooves 3 are provided on the bracket 2, which are used for correspondingly inserting and installing the battery cells 4 to be assembled into a battery pack, a heat sink 5 is provided between the bracket 2 and the bottom plate 1, the bottom end surface of the battery cell 4 passes through the mounting groove 3 to fit against the top of the heat sink 5, a plurality of heat dissipation tubes 6 are sequentially arranged and connected to the upper end of the heat sink 5, and the heat dissipation tubes 6 are correspondingly fitted against the side end surface of each battery cell 4, a slot frame 7 is correspondingly provided in each mounting groove 3 on the heat sink 5, a partition frame 8 is provided in the heat sink 5, and the top of the partition frame 8 passes through the heat sink 5 to be fixedly connected with the slot frame 7, and a coolant circulates in the heat sink 5 and the heat dissipation tube 6, so that when the battery cell 4 is inserted and installed along the mounting groove 3, the slot frame 7 is pressed to drive the partition frame 8 to press down, so as to divide the heat sink 5 into a plurality of bottom heat dissipation areas 51, and each bottom heat dissipation area 51 just corresponds to the bottom end surface of each battery cell 4 in sequence, so that the coolant flows through the bottom end surface 51 in sequence The coolant flows through the upper and lower heat dissipation areas 51 and the heat dissipation tubes 6 above the upper and lower heat dissipation areas 51 and the heat dissipation tubes 6 above the upper and lower heat dissipation areas 51, and then flows to the adjacent bottom heat dissipation area 51 and the heat dissipation tubes 6 above the upper and lower heat dissipation areas 51 to form a complete circulation channel for the entire pack, so as to fully circulate and dissipate the bottom and side surfaces of each battery cell 4. When some battery cells 4 are vacant, missing or often disassembled, the partition frame 8 at this position naturally elastically resets and moves upward to block the circulation of the bottom heat dissipation area 51 and the heat dissipation tubes 6 there, that is, the coolant is equivalent to skipping the circulation there, and directly flows to the bottom heat dissipation area 51 and the heat dissipation tubes 6 at the next adjacent battery cell 4, thereby automatically eliminating redundant liquid cooling channels, so that the efficiency of the circulating liquid cooling is relatively optimized, so as to realize that the battery pack liquid cooling heat dissipation can automatically and flexibly adjust and adapt to the changes in the assembly positions or quantities of different battery cells, so as to facilitate the further efficient and flexible operation and heat dissipation of the battery pack liquid cooling. At the same time, a top plate 9 is provided on the top of the bracket 2 for protective packaging.

[0026] In the embodiment of the present invention, the heat dissipation pipe 6 is designed to be serpentine-shaped to facilitate further efficient liquid cooling and heat dissipation.

[0027] In an embodiment of the present invention, one end of the heat dissipation pipe 6 is connected to the liquid outlet end of the bottom heat dissipation area 51 below it, and the other end is connected to the liquid inlet end of the adjacent bottom heat dissipation area 51, thereby achieving the coolant flowing through the bottom heat dissipation area 51 and the heat dissipation pipe 6 above it in sequence, and then flowing to the adjacent bottom heat dissipation area 51 and the heat dissipation pipe 6 above it, so as to form a complete circulation channel for the entire pack.

[0028] In the embodiment of the present invention, the partition frame 8 includes a fixed enclosure 81, a movable enclosure 82, a vertical partition 83, and a horizontal partition 84. The fixed enclosure 81 is fixed to the bottom end of the heat sink 5, the movable enclosure 82 is inserted inside the top of the fixed enclosure 81, and an elastic member is connected between the fixed enclosure 81 so that it can be telescopically slid up and down along the fixed enclosure 81. The vertical partition 83 is fixed to the top of the movable enclosure 82, and the horizontal partition 84 is horizontally fixed between the vertical partition 83 and the movable enclosure 82. The top of the vertical partition 83 passes through the heat sink 5. The slot frame 7 is fixedly connected to the slot frame 7, so that when the battery cell 4 is inserted and installed along the installation slot 3, the slot frame 7 is pressed to drive the vertical partition 83 to be pressed down, so as to drive the movable enclosure 82 and the horizontal partition 84 to move down together, so as to divide the heat sink 5 into a plurality of bottom heat dissipation areas 51 through the vertical partition 83, and does not affect the heat dissipation pipe 6. One end is connected to the liquid outlet end of the bottom heat dissipation area 51 below it, and the other end is connected to the liquid inlet end of the adjacent bottom heat dissipation area 51. The coolant flows through the bottom heat dissipation area 51 and the heat dissipation pipe above it in sequence. 6, and then flows to the adjacent bottom heat dissipation area 51 and the heat dissipation pipe 6 above it. When some of the battery cells 4 are vacant, missing or often disassembled, the vertical partition 83 at that location elastically moves up and resets, and the movable enclosure 82 and the transverse partition 84 at that location move up together with it to enclose and occupy the original bottom heat dissipation area 51 at that location to block the horizontal flow area, and the transverse partition 84 moves up to seal and block the corresponding bottom heat dissipation area 51 and the liquid outlet conduction position of the heat dissipation pipe 6 at that location. Since the movable enclosure 82 is inserted into the fixed enclosure 81 The inside of the top end, that is, smaller than the outer diameter of the fixed enclosure 81, is bound to have a gap with the inner wall of the heat sink 5, so that the incoming liquid flows directly through the gap to the bottom heat dissipation area 51 at the position of the next adjacent battery cell 4, which is equivalent to automatically eliminating redundant liquid cooling channels and directly jumping to the position of the battery cell 4 for circulation and heat dissipation, so that the efficiency of the circulating liquid cooling is relatively optimized, so as to realize the function of automatic and flexible adjustment of the battery pack liquid cooling to adapt to changes in the assembly position or quantity of different battery cells.

[0029] In an embodiment of the present invention, a plurality of leakage holes are provided on the transverse partition 84, so that when the transverse partition 84 moves upward, the coolant thereon automatically leaks downward from the leakage holes, so that no matter whether the transverse partition 84 moves upward or downward, it does not affect the coolant in the bottom heat dissipation area 51 and the heat dissipation pipe 6.

[0030] In an embodiment of the present invention, the elastic member is a plurality of groups of springs.

[0031] In an embodiment of the present invention, the slot frame 7 includes a bottom ring frame 71 and a connecting piece 72. The bottom ring frame 71 is provided in a mounting groove 3 to fit around the outer periphery of the bottom end of the battery cell 4. The connecting piece 72 is fixed to the inner side of the bottom ring frame 71. The bottom end of the bottom ring frame 71 is fixed to the top of the vertical partition 83 that passes through the heat sink 5. When the battery cell 4 is inserted and installed along the mounting groove 3, it is inserted into the bottom ring frame 71, presses against the connecting piece 72, and directly drives the partition frame 8 to be pressed down.

[0032] In an embodiment of the present invention, the connecting piece 72 is made of a heat-conducting material so that it can horizontally fit the top of the heat sink 5 for heat conduction, thereby efficiently driving the partition frame 8 downward while the connecting piece 72 is horizontally fitted so as not to affect the effect of efficient cooling and heat dissipation.

[0033] In the embodiment of the present invention, a temperature sensor and an image sensor are disposed at the bottom of the top plate 9 to respectively sense the position of each battery cell 4 so as to detect the position distribution of each battery cell 4 and its heat dissipation performance in real time.

[0034] In a battery pack adjustable heat dissipation device disclosed in the present invention, when in use, a bracket 2 is provided on a bottom plate 1, a plurality of mounting grooves 3 are provided on the bracket 2, a heat dissipation plate 5 is provided between the bracket 2 and the bottom plate 1, a plurality of heat dissipation tubes 6 are sequentially arranged and connected to the upper end of the heat dissipation plate 5, a slot frame 7 is correspondingly provided in each mounting groove 3 on the heat dissipation plate 5, a partition frame 8 is provided in the heat dissipation plate 5, and a coolant circulates in the heat dissipation plate 5 and the heat dissipation tube 6. When the battery cell 4 is inserted and installed along the mounting groove 3, the slot frame 7 is pressed against to drive the partition frame 8 to press down, so as to divide the heat dissipation plate 5 into a plurality of bottom heat dissipation areas 51, and the coolant flows through the bottom heat dissipation area 51 and the heat dissipation tube 6 above it in sequence, and then flows to the bottom heat dissipation area 51 and the heat dissipation tube 6 above it in sequence. To the adjacent bottom heat dissipation area 51 and the heat dissipation tube 6 above it, so as to form a complete circulation channel for the entire pack, so as to fully circulate and dissipate the heat of the bottom and side surfaces of each battery cell 4. When some battery cells 4 are vacant, missing or often disassembled, the partition frame 8 there is elastically reset and moved upward to block the circulation of the bottom heat dissipation area 51 and the heat dissipation tube 6 there, that is, the coolant is equivalent to skipping the circulation there, and directly flowing to the bottom heat dissipation area 51 and the heat dissipation tube 6 at the next adjacent battery cell 4, so that the efficiency of the circulating liquid cooling is relatively optimized, so as to realize the function that the liquid cooling of the battery pack can automatically and flexibly adjust and adapt to the changes in the assembly position or quantity of different battery cells.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. In line with the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as described above, which are not provided in detail for the sake of simplicity.

[0036] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

Claims

1. A battery pack adjustable heat dissipation device, characterized in that: include: A bottom plate, a bracket is provided on the bottom plate, a plurality of mounting grooves are provided on the bracket for correspondingly inserting and installing electric cores, a heat sink is provided between the bracket and the bottom plate, the bottom end surface of the electric core passes through the mounting groove to fit against the top of the heat sink, a plurality of heat dissipation tubes are sequentially arranged and connected to the upper end of the heat sink, the heat dissipation tubes are correspondingly fitted against the side end surfaces of each of the electric cores, a slot frame is correspondingly provided in each of the mounting grooves on the heat sink, a partition frame is provided in the heat sink, the top of the partition frame passes through the heat sink to be fixedly connected to the slot frame, Cooling liquid circulates in the heat sink and the heat pipe. When the battery cell is inserted and installed along the installation slot, the slot frame is pressed against to drive the partition frame to press down, so as to divide the heat sink into a plurality of bottom heat dissipation areas, which are used to dissipate heat corresponding to the bottom end surfaces of the battery cells, so that the cooling liquid flows through the bottom heat dissipation area and the heat pipe above it, as well as the adjacent bottom heat dissipation area and the heat pipe above it in sequence. The partition frame is elastically reset and moved upward to block the flow of the corresponding bottom heat dissipation area and the heat pipe. A top plate is provided on the top of the bracket. The partition frame includes a fixed enclosure, a movable enclosure, a vertical partition, and a transverse partition. The fixed enclosure is fixed to the inner bottom end of the heat sink, the movable enclosure is inserted into the top end of the fixed enclosure, and an elastic member is connected between the fixed enclosure so that it can be telescopically slid up and down along the fixed enclosure. The vertical partition is fixed to the top end of the movable enclosure, and the transverse partition is horizontally fixed between the vertical partition and the movable enclosure. The top end of the vertical partition passes through the heat sink to be fixedly connected to the slot frame. When the transverse partition is elastically moved up and reset with the movable enclosure, it closes and blocks the corresponding bottom heat dissipation area and the heat dissipation pipe flow.

2. The adjustable heat dissipation device for battery pack according to claim 1, characterized in that: The heat dissipation pipe is designed to be in a serpentine shape.

3. The adjustable heat dissipation device for battery pack according to claim 1, characterized in that: One end of the heat dissipation pipe is connected to the liquid outlet end of the bottom heat dissipation area below it, and the other end is connected to the liquid inlet end of the adjacent bottom heat dissipation area.

4. The adjustable heat dissipation device for battery pack according to claim 1, characterized in that: The transverse partition is provided with a plurality of liquid leakage holes.

5. The adjustable heat dissipation device for battery pack according to claim 1, characterized in that: The elastic member is a plurality of groups of springs.

6. The adjustable heat dissipation device for battery pack according to claim 1, characterized in that: The slot frame includes a bottom ring frame and a connecting piece. The bottom ring frame is arranged in the mounting slot to fit around the outer periphery of the bottom end of the battery cell. The connecting piece is fixed to the inner side of the bottom ring frame. The bottom end of the bottom ring frame is fixed to the top end of the vertical partition that passes through the heat sink.

7. The adjustable heat dissipation device for battery pack according to claim 6, characterized in that: The connecting piece is made of heat-conducting material so as to be horizontally attached to the top of the heat sink for heat conduction.

8. The adjustable heat dissipation device for battery pack according to claim 1, characterized in that: A temperature sensor and an image sensor are provided at the bottom of the top plate to respectively sense the positions of the battery cells.

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