Flat heat pipe zoning cooling structure for high-temperature zone of battery stack

Abstract

The present invention relates to the field of batteries, and particularly to a flat heat pipe partition cooling structure for the high-temperature area of a battery stack, which includes a cooling shell. A cooling pipe and a wick are arranged inside the cooling shell. In the present invention, the cooling shell is used to preliminarily store the cooling working medium. Then, after the battery modules in the cooling interval formed between any two adjacent vertical shells on the cooling shell generate heat, by guiding the distribution of the gas working medium after phase change in the adjacent two vertical shells in the cooling pipe to form a pressure difference, the communicator at the cooling pipe is opened, so that the cooling working medium in the cooling shell preferentially flows to the high-temperature area, realizing the key cooling of the high-temperature area. Then, when the subsequent cooling working medium flows through a plurality of guiding pipes and cooling pipelines, a secondary cooling effect on the high-temperature area is formed, effectively improving the cooling rate and effect on the heat-generating area of the battery pack.

Description

Technical Field

[0001] The present invention relates to the field of batteries, and particularly to a flat heat pipe partition cooling structure for the high-heat area of a battery stack. Background Art

[0002] With the continuous development of battery technology, high-energy density batteries have been widely used in fields such as electric vehicles and energy storage systems. However, during the discharge process, high-energy density batteries generate a large amount of heat by themselves. Especially in the high-heat area of the battery stack (group), the heat is concentrated and the heat dissipation efficiency is low. If the heat is not dissipated and cooled in time, it is very easy to cause the battery to overheat and even pose a safety hazard.

[0003] With the development of technology, technicians in related fields have also optimized a large number of technical means for cooling the high-heat area of the battery stack. For more accurate comparison, for example, Chinese Patent No. CN111076591A discloses a flat heat pipe with a common condensation chamber for multiple evaporation surfaces for battery stack cooling, including a housing, a serpentine pipeline, a liquid filling pipe, a wick, etc. When in use, it uses the phase change of the working medium to take away the heat generated during the operation of the battery pack, with high heat dissipation efficiency; cooling is carried out inside the heat pipe through the serpentine pipeline, eliminating the heat sink structure; the phase change points of the working medium in each interconnected evaporation chamber are the same, so the temperature consistency between each battery cell can be effectively controlled; multiple evaporation surfaces share a common condensation chamber, making the structure more compact and reducing the overall volume of the battery pack cooling device.

[0004] However, there are still some deficiencies in the above heat pipe during actual use: the above heat pipe introduces the cooling working medium through the inlet of the serpentine pipeline, and then drives the cooling working medium to flow out of the serpentine pipeline through the outlet of the serpentine pipeline. The flowing liquid cooling working medium continuously takes away the heat released during steam condensation. In this way, the effective control of the maximum temperature of the battery pack and the temperature difference between battery cells is realized through repeated circulation. During use, since the heat generated by the battery stack (group) usually takes a local area as the high-heat area and then spreads to other areas to jointly increase the temperature, when introducing the cooling working medium by the above technical means, it is necessary to drive the cooling working medium to enter through the inlet of the serpentine pipeline, flow along the serpentine pipeline and then discharge from the outlet of the serpentine pipeline. That is, the cooling working medium for condensing steam will not be directed to the high-heat area of the battery stack in a timely manner, and it needs to flow through the high-heat area strictly along the guidance of the serpentine pipeline and then be discharged for circulation, resulting in low heat dissipation and cooling efficiency.

[0005] Therefore, under the above-stated viewpoints, there is still room for improvement in the existing technical means for cooling the high-heat area of the battery stack. Summary of the Invention

[0006] In order to solve the above problems, the present invention provides a flat heat pipe zoned cooling structure for a high-heat zone of a battery stack, comprising a cooling shell, wherein a cooling pipe and a liquid wick are arranged in the cooling shell.

[0007] The cooling shell comprises at least one horizontal shell and a plurality of vertical shells connected to the horizontal shell. The horizontal shell and two adjacent vertical shells together form a cooling zone so as to be installed in corresponding battery groups. A partition baffle is provided in the horizontal shell.

[0008] A plurality of cooling pipes are provided and evenly arranged in the horizontal shell, a plurality of vertical shells are connected to the cooling pipes one by one, and a communicating vessel is commonly connected between the cooling pipes and the horizontal shells;

[0009] A plurality of liquid absorbing cores are provided corresponding to the cooling pipes and are limitedly connected in the vertical shell.

[0010] Preferably, the partition baffle divides the horizontal shell into a liquid storage chamber and an installation chamber, the cooling pipe is limitedly connected to the liquid storage chamber, and the end of the vertical shell away from the connected cooling pipe passes through the installation chamber.

[0011] Preferably, the communicating vessel comprises a plurality of connecting tubes which are commonly connected between the cooling pipes and the liquid storage chamber, a sliding resistance block is provided in the connecting tubes for limiting connection, a limiting pipe sleeve is provided corresponding to the connecting tubes in the liquid storage chamber, and the sliding resistance block is floatingly connected to the corresponding connecting tubes and the limiting pipe sleeves through elastic parts.

[0012] Preferably, a guide slide rod is provided in the hollow interior of the connecting through pipe, a guide slider is provided on the upper limit sleeve of the guide slide rod, and an adjustment spring is provided on the guide slide rod and is located between the guide slider and the cooling pipe.

[0013] Preferably, a guiding inclined surface is symmetrically arranged at one end of the guide sliding block close to the sliding block.

[0014] Preferably, a limit clamp ring that contacts the sliding resistance block is provided in the connecting tube to limit the sliding range of the sliding resistance block in the connecting tube.

[0015] Preferably, any two adjacent cooling pipes are connected to each other via a guide pipe.

[0016] Preferably, there are multiple guide pipes between two adjacent cooling pipes, and the multiple guide pipes are evenly spaced and arranged along the length direction of the connected cooling pipes.

[0017] Preferably, the guide pipes on the same cooling pipe are symmetrically distributed at both ends of the cooling pipe, and all cooling pipes and guide pipes together form a serpentine structure with end-to-end connection effect.

[0018] Preferably, all the cooling pipes are arranged in close contact with the partition baffle.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] First, the cooling shell provided in the present invention is used to initially store the cooling working fluid. Then, after the battery modules in the cooling intervals formed between any two adjacent vertical shells on the cooling shell generate heat, by guiding the distribution of the gas working fluid after phase change in the adjacent two vertical shells in the cooling pipes to form a pressure difference, the communicating vessel at the cooling pipe is opened, so that the cooling working fluid in the cooling shell preferentially flows to the high-temperature area, realizing the key cooling of the high-temperature area. Then, when the subsequent cooling working fluid flows through several guiding pipes and cooling pipelines, a secondary cooling effect on the high-temperature area is formed, effectively improving the cooling rate and effect on the heat-generating area of the battery pack.

[0021] Second, through the phase change cycle of the liquid working fluid and the directional flow in several cooling pipes and guiding pipes in the present invention, rapid heat dissipation cooling of the heat-generating area of the battery pack is realized, so that the cooling working fluid circulates evenly between all the cooling pipes, effectively controlling the temperature consistency between each battery module.

[0022] Third, by making several cooling pipes in close contact with the partition baffle at the liquid storage cavity, the effect of pre-cooling the steam after phase change at the cooling pipes is realized. After introducing the cooling working fluid into the cooling pipes, the cold-region working fluid is driven to flow along the cooling pipes and guiding pipes, and the steam after phase change is cooled again, further improving the efficiency of heat dissipation cooling of the battery pack and further enhancing the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the drawings and embodiments.

[0024] Figure 1 is a schematic structural diagram of the present invention.

[0025] Figure 2 is a schematic cross-sectional structural diagram of the cooling shell of the present invention.

[0026] Figure 3 is a schematic structural diagram of the partition baffle of the present invention.

[0027] Figure 4 is a schematic structural diagram of the cooling pipe of the present invention.

[0028] Figure 5 is a schematic structural diagram of the communicating vessel of the present invention.

[0029] Figure 6 is a schematic structural diagram of the wick of the present invention.

[0030] Figure 7 It is a schematic structural diagram of the guiding slider of the present invention.

[0031] Figure 8 It is a schematic structural diagram of the connecting through pipe of the present invention.

[0032] Figure 9 It is the present invention Figure 8 An enlarged view of A in it.

[0033] Figure 10 It is a schematic structural diagram of the guiding pipe of the present invention.

[0034] In the figure, 1, cooling shell; 10, horizontal shell; 100, liquid storage cavity; 101, installation cavity; 11, vertical shell; 12, partition baffle; 2, cooling pipe; 3, liquid absorption core; 4, communicating vessel; 40, connecting through pipe; 41, sliding resistance block; 410, driven sliding rod; 411, blocking block; 412, limiting snap ring; 42, limiting pipe sleeve; 43, elastic member; 44, guiding sliding rod; 45, guiding slider; 450, guiding inclined surface; 46, adjusting spring; 47, guiding pipe; 48, bent connecting pipe. Specific embodiments

[0035] The following combines the attached Figure 1 to the attached Figure 10 The embodiments of the present invention will be described in detail.

[0036] The embodiment of the present application discloses a flat heat pipe partition cooling structure for the high-temperature area of a battery stack. It should be noted that the present application is mainly applied in the process of dissipating heat from the high-temperature area of the battery stack, and effectively dissipates heat from the battery stack in time in terms of technical effects; especially during the heat dissipation process, the serpentine pipeline formed by several cooling pipes and guiding pipes effectively extends the retention time of the cooling working medium in the cooling pipes; further, the present application also controls the opening and closing of the communicating vessel to preferentially introduce the cooling working medium into the high-temperature area of the battery stack in the liquid storage cavity, achieving the key cooling effect on the high-temperature area.

[0037] Embodiment 1: Refer to Figures 1 to 3As shown, a flat heat pipe partition cooling structure for a high-heat area of a battery stack includes a cooling shell 1, a cooling pipe 2 and a liquid wick 3. The cooling shell 1 is a hollow structure, and the cooling pipe 2 and the liquid wick 3 are arranged inside the cooling shell 1. The liquid wick 3 is a porous structure formed by conventional sintering of metal powder and has a large capillary force. During use, liquid cooling medium is introduced into the cooling shell 1 and the cooling pipe 2 in advance, and the high heat generated by the heating of the battery pack is transferred to the cooling shell 1, causing the liquid working medium on the lower side of the cooling shell 1 to evaporate to form a gas working medium, while taking away part of the heat at the battery pack. The generated gas working medium flows upward due to the pressure difference, and after contacting the cooling working medium on the upper side of the cooling shell 1 and the cooling pipe 2, it condenses into a liquid working medium again. At this time, driven by the capillary force of the liquid wick 3 and its own gravity, the condensed liquid working medium continuously flows and replenishes to the high-heat area of the battery pack. Through the gas-liquid phase change and circulating flow of the working medium, the heat of the heating area of the battery pack is continuously transferred to the cooling working medium inside the cooling shell 1, so as to achieve the heat dissipation and cooling effect of the battery pack.

[0038] Reference Figures 1 to 6 As shown, the cooling shell 1 includes at least one horizontal shell 10 and a plurality of vertical shells 11 connected to the horizontal shell 10. A cooling zone is formed between the horizontal shell 10 and two adjacent vertical shells 11 so as to install the corresponding battery packs in different zones. A partition baffle 12 is arranged in the horizontal shell 10.

[0039] There are multiple cooling pipes 2 evenly arranged in the horizontal shell 10 , and a plurality of vertical shells 11 are connected to the cooling pipes 2 one by one. A communicating vessel 4 is commonly connected between the cooling pipes 2 and the horizontal shell 10 .

[0040] A plurality of liquid wicks 3 are provided corresponding to the cooling pipes 2 and are position-limitedly connected in the vertical shell 11 .

[0041] Reference Figure 3 and Figure 4 As shown, the partition baffle 12 divides the horizontal shell 10 into a liquid storage chamber 100 and an installation chamber 101 from top to bottom, the cooling pipe 2 is limitedly connected to the liquid storage chamber 100, and the end of the vertical shell 11 away from the connected cooling pipe 2 passes through the installation chamber 101. During use, the cooling medium is pre-introduced into the liquid storage chamber 100 on the upper side of the partition plate, and then introduced into a plurality of cooling pipes 2 to conduct heat dissipation to the heat generation area of the battery pack. When the battery pack is heated in the interval between any two adjacent vertical shells 11, the cooling medium in the liquid storage chamber 100 is controlled by the communicating vessel 4 to be directly guided to the cooling interval to pre-cool the battery pack heated in the cooling interval. After the cooling medium in the subsequent cooling pipe 2 flows to the cooling interval, the heated battery in the cooling interval is cooled for a secondary heat dissipation, which effectively improves the efficiency and effect of heat dissipation cooling of the battery pack heating area.

[0042] Referring to Figures 5 to 10 as shown, the communicating vessel 4 includes a connecting pipe 40, a sliding resistance block 41, a limiting pipe sleeve 42 and an elastic member 43. A plurality of connecting pipes 40 are commonly connected between the plurality of cooling pipes 2 and the liquid storage chamber 100. A sliding resistance block 41 is connected in a limited manner inside the connecting pipe 40. A limiting pipe sleeve 42 corresponding to the connecting pipe 40 is arranged inside the liquid storage chamber 100. The sliding resistance block 41 is floatingly connected to the corresponding connecting pipe 40 and limiting pipe sleeve 42 through the elastic member 43. When in use, after the battery module between any two adjacent vertical shells 11 generates heat, the liquid working medium in the two vertical shells 11 in contact with both sides of the battery module changes into a gaseous working medium. At this time, the sliding resistance blocks 41 in the two cooling pipes 2 correspondingly connected to the two vertical shells 11 are driven to move upward. The upward movement of the sliding resistance block 41 drives the elastic member 43 connected thereto to be compressed under pressure. At the same time, the upward movement of the sliding resistance block 41 will disengage from the connecting pipe 40 connected thereto, so that the connecting pipe 40 is connected to the cooling pipe 2. At this time, the cooling working medium in the liquid storage chamber 100 will be directly guided to the two cooling pipes 2 through the two connecting pipes 40 to pre-conduct heat dissipation for the steam in contact with the two cooling pipes 2, causing the phase-change gaseous working medium at the two cooling pipes 2 to re-change into a liquid working medium and then flow back into the connected vertical shell 11 to complete the effect of initially dissipating heat and cooling the battery module that generates heat.

[0043] Referring to Figure 7 and Figure 8 as shown, the inside of the connecting pipe 40 is hollow and provided with a guiding slide bar 44. A guiding slider 45 is sleeved on the guiding slide bar 44 in a limited manner. An adjusting spring 46 is sleeved on the guiding slide bar 44 between the guiding slider 45 and the cooling pipe 2. When in use, through the elastic force provided by the connected adjusting spring 46, the guiding slider 45 has a driving force to always axially slide along the connected guiding slide bar 44.

[0044] Referring to Figure 8 and Figure 9 as shown, guiding inclined surfaces 450 are symmetrically arranged at one end of the guiding slider 45 close to the sliding resistance block 41. When the guiding slider 45 is driven to slide in the direction close to the sliding resistance block 41, after the guiding slider 45 abuts against the sliding resistance block 41, as the guiding slider 45 continues to slide, the sliding resistance block 41 moves upward along the guiding inclined surface 450 on the guiding slider 45, so as to disengage from the connected connecting pipe 40, so that the liquid storage chamber 100 is connected to the cooling pipe 2.

[0045] It should be noted that in order to facilitate the sliding of the sliding block 41 by sliding the guide slider 45, the sliding block 41 includes a driven sliding rod 410 coaxially inserted between the limiting pipe sleeve 42 and the connecting pipe 40, and the driven sliding rod 410 is at least provided with a blocking block 411 that fits the inner wall of the connecting pipe 40, and the driven sliding rod 410 extends downward to the cooling pipe 2 after passing through the blocking block 411, and the elastic member 43 is sleeved on a section of the driven sliding rod 410 close to the limiting pipe sleeve 42 to provide the connected driven sliding rod 410 and the blocking block 411 with a driving force to always move downward along the limiting pipe sleeve 42 and continue to close it in the connecting pipe 40. During use, by driving the guide slider 45 to slide, the extended section of the driven slide rod 410 contacts the guide slope 450 on the upper side of the guide slider 45, and then moves upward along the guide slope 450. The driven slide rod 410 moves upward, driving the connected blocking block 411 to move upward and disengage from the connecting through pipe 40, and at the same time drives the elastic member 43 to be compressed.

[0046] Reference Figure 9 As shown, in order to prevent the blocking block 411 and the driven slide bar 410 from excessively moving downward and disengaging from the connecting tube 40, so that the connecting tube 40 connects the liquid storage chamber 100 and the cooling pipe 2 at an unnecessary moment, a limiting clamp ring 412 that conflicts with the sliding block 41 is provided in the connecting tube 40. The limiting clamp ring 412 is provided at the lower side of the blocking block 411 in the same connecting tube 40, and the driven slide bar 410 extends through the limiting clamp ring 412 into the cooling pipe 2 to limit the sliding range of the sliding block 41 in the connecting tube 40. It should be noted that the elastic member 43 is in a state of being initially compressed in the initial state.

[0047] Reference Figures 7 to 10 As shown, during the heating process of any one of the battery modules, heat will be gradually transferred to the battery modules around it, causing the remaining battery modules to gradually heat up. Therefore, in order to maintain the consistency of the temperature of the battery pack after heat dissipation and cooling, a guide pipe 47 is commonly connected between any two adjacent cooling pipes 2. After the cooling medium is introduced into any cooling pipe 2, the cooling medium enters the remaining cooling pipes 2 through the guide pipe 47 connected to the cooling pipe 2, so as to timely dissipate heat and cool the battery modules in the corresponding cooling intervals of the remaining cooling pipes 2.

[0048] Further, refer to Figures 7 to 10As shown, a plurality of guiding pipes 47 are provided between two adjacent cooling pipes 2. The plurality of guiding pipes 47 are evenly arranged at intervals along the length direction of the connected cooling pipes 2. Through the plurality of guiding pipes 47 commonly provided between two adjacent cooling pipes 2, the rate of introducing the cooling working medium in the cooling pipe 2 into the adjacent other cooling pipe 2 is effectively increased, thereby improving the efficiency of heat dissipation and cooling of the entire battery pack, and effectively controlling the temperature consistency between each battery module monomer.

[0049] Referring to Figures 7 to 10 As shown, the guiding pipes 47 on the same cooling pipe 2 are symmetrically distributed at both ends on both sides of the cooling pipe 2. A head-to-tail connection effect of a serpentine structure is jointly formed between all the cooling pipes 2 and the guiding pipes 47. Some of the guiding pipes 47 on the cooling pipes 2 located at both ends of the serpentine structure penetrate out of the horizontal housing 10 outward, so as to introduce the cooling working medium into the cooling pipe 2. By controlling the flow direction of the cooling working medium between all the cold zone pipelines, the retention time of the cooling working medium in the cooling pipe 2 is increased, and the effect of improving the heat dissipation and cooling effect on the steam after phase change therein is achieved.

[0050] Referring to Figures 7 to 10 As shown, all the cooling pipes 2 are arranged in close contact with the partition baffle 12. During use, since the cooling working medium is stored in the liquid storage cavity 100 above the partition baffle 12, when the cooling working medium is not introduced into the cooling pipe 2, through the close contact setting of the cooling pipe 2 and the partition baffle 12, the effect of pre-cooling the steam after phase change at the cooling pipe 2 is achieved. After the cooling working medium is introduced into the cooling pipe 2, the cold zone working medium is driven to flow along the cooling pipe 2 and the guiding pipe 47, and the steam after phase change is cooled again, effectively improving the efficiency of heat dissipation and cooling of the battery pack.

[0051] Furthermore, as an optional implementation manner, one end of some guiding pipes 47 penetrating out of the horizontal housing 10 on any side inside the horizontal housing 10 is connected with a bent connecting pipe 48. The bent connecting pipe 48 penetrates through the horizontal housing 10 and is simultaneously communicated with the guiding pipe 47 and the liquid storage cavity 100.

[0052] During use, first, the cooling working medium is injected into the liquid storage cavity 100, and then the cooling working medium entering the liquid storage cavity 100 enters the cooling pipe 2 through the bent connecting pipe 48 and the connected guiding pipe 47 for flowing, so that the cooling working medium in the liquid storage cavity 100 always maintains a low temperature, so as to transfer the low temperature to the cooling pipe 2 attached to the lower side of the liquid storage cavity 100 in advance, thereby effectively increasing the efficiency and effect of the cooling pipe 2 for heat dissipation and cooling of the gaseous working medium after phase change.

[0053] Embodiment Two: Referring to Figures 7 to 10As shown, on the basis of Embodiment 1, in order to further improve the heat dissipation effect of the high-temperature area of the battery stack, the size of the guiding slider 45 is set to be slightly smaller than the internal size of the cooling pipe 2, and all the guiding sliders 45, connecting pipes 40, limiting pipe sleeves 42 and sliding resistance blocks 41 are arranged towards the side close to the bent connecting pipe 48, that is, located at the position close to one end of the connected cooling pipe 2. In the initial state, the guiding slider 45 is spaced from the driven sliding rod 410 by a certain distance and is closer to the end of the cooling pipe 2.

[0054] During use, since the size of the guiding slider 45 in the cooling pipe 2 is slightly smaller than the internal size of the cooling pipe 2 and is arranged towards one end of the cooling pipe 2, the gas working medium after phase change and temperature rise in the vertical shell 11 is divided into a large area a and a small area b passively after rising into the connected cooling pipe 2. Then, as the rising gas working medium increases, the air pressure in the small area b will first be greater than that in the large area a and then gradually equal to that in the large area a. Therefore, in the initial state, the steam in the small area b in the same cooling pipe 2 has a tendency to flow towards the large area a along the guiding inclined surface 450 of the guiding slider 45 and the gap between the guiding slider 45 and the cooling pipe 2, thereby pushing the guiding slider 45 in the cooling pipe 2 to slide towards the driven sliding rod 410, and at the same time driving the connected elastic member 43 to be compressed. It should be noted that during this process, no cooling working medium is introduced into the liquid storage cavity 100 and several cooling pipes 2.

[0055] After the guiding inclined surface 450 on the guiding slider 45 contacts the driven sliding rod 410, the driven sliding rod 410 and the blocking block are pushed upward, so that the cooling pipe 2, the connecting pipe 40 and the liquid storage cavity 100 are connected. At this time, the cooling working medium is introduced into the liquid storage cavity 100, so that the cooling working medium in the liquid storage cavity 100 preferentially moves downward to the cooling pipe 2 at the connected position, and at the same time, it also enters the pipeline of the serpentine structure formed by several cooling pipes 2 and the guiding pipe 47 through the bent connecting pipe 48 and the guiding pipe 47, so as to realize the effect of preferentially dissipating heat from the high-temperature area in the battery pack and then dissipating heat from all battery packs in sequence, effectively improving the efficiency and effect of dissipating heat from the battery pack.

[0056] During operation: In the first step, the cooling working medium is first injected into the liquid storage cavity 100 in the cooling shell 1, so that the cooling working medium flows from the liquid storage cavity 100 to the guiding pipe 47, then to the cooling pipe 2, and flows sequentially along the guiding pipe 47 between adjacent two cooling pipes 2, realizing the effect of dissipating heat from the whole battery pack.

[0057] Step 2: Before the cooling working medium in the liquid storage cavity 100 flows to the cooling pipeline 2 through the guiding pipe 47, due to the heat generated by the battery module monomers of the battery pack module, the guiding sliders 45 in the two cooling pipelines 2 on both sides of the battery module are driven by the pressure difference formed by the heated steam in the cooling pipeline, opening the connectors 4 on the two cooling pipelines, so that the cooling working medium injected into the liquid storage cavity 100 is pre-introduced into the two interconnected cooling pipelines through the connectors 4, and the battery module in this cooling interval is pre-cooled by heat dissipation.

[0058] Step 3: At the same time, the cooling working medium in the liquid storage cavity 100 enters the serpentine structure pipeline formed between several guiding pipes 47 and the cooling pipeline through the bent connecting pipe 48 and the guiding pipe 47, and performs secondary heat dissipation cooling on the heated battery module in the above cooling interval, realizing uniform cooling of the whole battery pack and effectively controlling the temperature consistency between each battery module.

[0059] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting.

[0060] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flat heat pipe partition cooling structure for the high-temperature area of a battery stack, comprising a cooling shell (1), characterized in that: The cooling shell (1) is provided with a cooling pipe (2) and a liquid wick (3), wherein: The cooling shell (1) comprises at least one horizontal shell (10) and a plurality of vertical shells (11) connected to the horizontal shell (10); a cooling zone is formed between the horizontal shell (10) and two adjacent vertical shells (11) so as to be installed in corresponding partitions of the battery pack; a partition baffle (12) is provided in the horizontal shell (10); A plurality of cooling pipes (2) are provided and evenly arranged in the horizontal shell (10); a plurality of vertical shells (11) are connected to the cooling pipes (2) in a one-to-one correspondence; and a communicating vessel (4) is commonly connected between the cooling pipes (2) and the horizontal shell (10); A plurality of liquid wicks (3) are provided corresponding to the cooling pipes (2) and are positionally connected in the vertical housing (11); The partition baffle (12) divides the horizontal shell (10) into a liquid storage chamber (100) and an installation chamber (101) in the upper and lower parts; the cooling pipe (2) is connected to the liquid storage chamber (100) in a limited manner; and an end of the vertical shell (11) away from the connected cooling pipe (2) passes through the installation chamber (101); The communicating vessel (4) comprises a plurality of connecting tubes (40) which are connected to the plurality of cooling pipes (2) and the liquid storage chamber (100); a sliding resistance block (41) is connected in a limit position in the connecting tube (40); a limit position pipe sleeve (42) is provided in the liquid storage chamber (100) corresponding to the connecting tube (40); and the sliding resistance block (41) is floatingly connected to the corresponding connecting tube (40) and the limit position pipe sleeve (42) via an elastic member (43).

2. The flat heat pipe partition cooling structure for the high-temperature area of the battery stack according to claim 1, wherein: The connecting through pipe (40) is hollow inside and has a guide slide bar (44). The upper limit sleeve of the guide slide bar (44) is provided with a guide slider (45). The guide slide bar (44) is sleeved with an adjustment spring (46) located between the guide slider (45) and the cooling pipe (2).

3. The flat heat pipe zoning cooling structure for the high-temperature area of the battery stack according to claim 2, wherein: A guiding inclined surface (450) is symmetrically arranged at one end of the guide sliding block (45) close to the sliding resistance block (41).

4. The flat heat pipe partition cooling structure for the high-temperature area of the battery stack according to claim 2, wherein: A limiting clamping ring (412) that contacts the sliding resistance block (41) is arranged in the connecting through pipe (40) to limit the sliding range of the sliding resistance block (41) in the connecting through pipe (40).

5. The flat heat pipe partition cooling structure for the high-temperature area of the battery stack according to claim 1, characterized in that: Any two adjacent cooling pipes (2) are connected to each other via a guide pipe (47).

6. The flat heat pipe partition cooling structure for the high-temperature area of the battery stack according to claim 1, wherein: There are multiple guide pipes (47) between two adjacent cooling pipes (2), and the multiple guide pipes (47) are evenly spaced along the length direction of the connected cooling pipes (2).

7. The flat heat pipe partition cooling structure for the high-temperature area of the battery stack according to claim 1, characterized in that: The guide pipes (47) on the same cooling pipe (2) are symmetrically distributed at both ends of the cooling pipe (2), and all cooling pipes (2) and the guide pipes (47) together form a serpentine structure with an end-to-end connection effect.

8. The flat heat pipe partition cooling structure for the high-temperature area of the battery stack according to claim 1, wherein: All of the cooling pipes (2) are arranged to fit the partition baffle (12).

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