Partitioned cooling structure of flat heat pipe for high-heat area of battery stack

Abstract

The invention relates to the field of batteries, in particular to a flat heat pipe partition cooling structure for a battery stack high heat area, which comprises a cooling shell, and a cooling pipeline and a liquid absorption core are arranged in the cooling shell; according to the invention, the cooling shell is used for preliminarily storing the cooling working medium, and after the battery module in the cooling interval formed between any two adjacent vertical shells on the cooling shell is heated, the gas working medium subjected to phase change in the two adjacent vertical shells is guided to be distributed in the cooling pipeline so as to form a pressure difference; therefore, the communicating vessel at the position of the cooling pipeline is opened, the cooling working medium in the cooling shell preferentially flows to the high-temperature area, key cooling of the high-temperature area is achieved, and then when the subsequent cooling working medium flows through the multiple guide pipes and the cooling pipeline, the secondary cooling effect on the high-temperature area is achieved. And the cooling rate and effect of the heating area of the battery pack are effectively improved.

Description

Technical Field

[0001] The invention relates to the field of batteries, and in particular to a flat plate heat pipe zoned cooling structure for a high-heat zone of a battery stack. Background Art

[0002] With the continuous development of battery technology, high energy density batteries are widely used in electric vehicles, energy storage systems and other fields. However, high energy density batteries generate a lot of heat during the discharge process, especially in the high heat area of ​​the battery stack (group), where the heat is concentrated and the heat dissipation efficiency is low. If the heat is not dissipated and cooled in time, it is easy to cause battery overheating and even cause safety hazards.

[0003] With the development of science and technology, technicians in related fields have also made a lot of optimizations on the technical means for cooling the high-heat area of ​​the battery stack. In order to make a more accurate comparison, a Chinese patent with publication number CN111076591A discloses a flat heat pipe with multiple evaporation surfaces sharing a condensation chamber for cooling the battery stack, including a shell, a serpentine pipeline, a liquid-filled tube and a liquid-absorbing core; when in use, the heat generated during the operation of the battery pack is taken away by the phase change of the working fluid, and the heat dissipation efficiency is high; the heat pipe is cooled by the serpentine pipeline, eliminating the heat sink structure; the phase change point of the working fluid in each interconnected evaporation chamber is the same, so the temperature consistency between each battery cell can be effectively controlled; multiple evaporation surfaces share a condensation chamber, which makes the structure more compact and reduces the total volume of the battery pack cooling device.

[0004] However, the above-mentioned heat pipe has some shortcomings in actual use: the above-mentioned heat pipe introduces the cooling medium from the serpentine pipe inlet, and then drives the cooling medium to flow out of the serpentine pipe through the serpentine pipe outlet. The flowing liquid cooling medium continuously takes away the heat released when the steam condenses. Such a reciprocating cycle realizes the effective control of the maximum temperature of the battery pack and the temperature difference between the battery cells. During use, since the heat of the battery stack (group) is usually a high-heat area in a local area and then spreads to the rest of the area to heat up together, when the above-mentioned technical means are used to introduce the cooling medium, the cooling medium needs to be driven to pass through the serpentine pipe inlet, flow along the serpentine pipe and then be discharged from the serpentine pipe outlet. That is, the cooling medium used to condense the steam will not be timely and directionally guided to the high-heat area of ​​the battery stack, but needs to strictly follow the guidance of the serpentine pipe, then flow through the high-heat area and then be discharged for circulation, and the heat dissipation and cooling efficiency is not high.

[0005] Therefore, based on the above-stated viewpoint, there is still room for improvement in the existing technical means for cooling the high-temperature areas of battery stacks. 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. 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; A plurality of liquid absorbing cores are provided corresponding to the cooling pipes and are limitedly connected in the vertical shell.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] Preferably, a guiding inclined surface is symmetrically arranged at one end of the guide sliding block close to the sliding block.

[0012] 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.

[0013] Preferably, any two adjacent cooling pipes are connected to each other via a guide pipe.

[0014] 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.

[0015] 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.

[0016] Preferably, all of the cooling pipes are arranged in close contact with the partition baffles.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present invention uses a cooling shell to initially store cooling medium. After the battery modules in the cooling zone formed between any two adjacent vertical shells on the cooling shell are heated, the distribution of the gas medium after phase change in the two adjacent vertical shells in the cooling pipe is guided to form a pressure difference, thereby opening the connecting vessel at the cooling pipe, so that the cooling medium in the cooling shell flows preferentially to the high-temperature area, achieving focused cooling of the high-temperature area. Then, when the cooling medium subsequently flows through a number of guide pipes and cooling pipelines, a secondary cooling effect is formed on the high-temperature area, effectively improving the cooling rate and effect of the heating area of ​​the battery pack.

[0018] 2. The present invention realizes rapid heat dissipation and cooling of the heating area of ​​the battery pack through the phase change circulation of the liquid working medium and the directional flow in a number of cooling pipes and guide pipes, so that the cooling working medium flows evenly among all cooling pipes, effectively controlling the temperature consistency between each battery module.

[0019] 3. The present invention achieves the effect of pre-dissipating heat and cooling the steam after phase change in the cooling pipe by fitting a plurality of cooling pipes with the partition baffle at the liquid storage chamber. After the cooling medium is introduced into the cooling pipe, the cold zone medium is driven to flow along the cooling pipe and the guide pipe, and the steam after phase change is dissipated and cooled again, thereby further improving the efficiency of heat dissipation and cooling of the battery pack and further improving the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the cooling shell of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the partition baffle of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the cooling pipeline of the present invention.

[0025] Figure 5 It is a structural schematic diagram of the communicating vessel of the present invention.

[0026] Figure 6 It is a structural schematic diagram of the liquid-absorbing core of the present invention.

[0027] Figure 7 It is a structural schematic diagram of the guide sliding block of the present invention.

[0028] Figure 8 It is a structural schematic diagram of the connecting pipe of the present invention.

[0029] Fig. 9 The present invention Figure 8 A is an enlarged view of the middle image.

[0030] Fig.10 It is a structural schematic diagram of the guide tube of the present invention.

[0031] In the figure, 1, cooling shell; 10, horizontal shell; 100, liquid storage chamber; 101, installation chamber; 11, vertical shell; 12, partition baffle; 2, cooling pipe; 3, liquid absorption core; 4, communicating vessel; 40, connecting through pipe; 41, sliding block; 410, driven slide rod; 411, blocking block; 412, limiting clamp ring; 42, limiting pipe sleeve; 43, elastic member; 44, guide slide rod; 45, guide slider; 450, guiding slope; 46, adjusting spring; 47, guide pipe; 48, bending connecting pipe. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 To Attachment Fig.10 Embodiments of the present invention are described in detail.

[0033] The embodiment of the present application discloses a flat-plate heat pipe zone cooling structure for a high-heat zone of a battery stack, and explains that the present application is mainly used in the process of heat dissipation and cooling of the high-heat zone of a battery stack, and technically achieves the effect of timely and effective heat dissipation and cooling of the battery stack after it is heated; in particular, in the process of heat dissipation and cooling, a serpentine pipeline formed by a plurality of cooling pipes and guide pipes effectively prolongs the retention time of the cooling medium in the cooling pipe; further, the present application also controls the opening and closing of the communicating vessel to control the liquid in the storage chamber to be preferentially introduced into the high-heat zone of the battery stack therein, thereby achieving a focused cooling effect on the high-temperature zone.

[0034] Example 1: Reference 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.

[0035] 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.

[0036] 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 .

[0037] A plurality of liquid wicks 3 are provided corresponding to the cooling pipes 2 and are position-limitedly connected in the vertical shell 11 .

[0038] 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.

[0039] Reference Figures 5 to 10 As shown, the communicating vessel 4 includes a connecting through-tube 40, a sliding resistance block 41, a limiting pipe sleeve 42 and an elastic member 43. A plurality of cooling pipes 2 and the liquid storage chamber 100 are commonly connected by a plurality of connecting through-tubes 40. The connecting through-tube 40 is limitedly connected with a sliding resistance block 41. A limiting pipe sleeve 42 is provided corresponding to the connecting through-tube 40 in the liquid storage chamber 100. The sliding resistance block 41 is floatingly connected to the corresponding connecting through-tube 40 and the limiting pipe sleeve 42 through the elastic member 43. During use, after the battery module located between any two adjacent vertical shells 11 is heated, the liquid working medium in the two vertical shells 11 in contact on both sides of the battery module is phase-changed into a gas working medium, and at this time, the sliding block 41 in the two cooling pipes 2 correspondingly connected to the two vertical shells 11 is driven to move upward, and the upward movement of the sliding block 41 drives the elastic member 43 connected thereto to be compressed, and at the same time, the upward movement of the sliding block 41 will disengage from the connecting through pipe 40 connected thereto, so that the connecting through pipe 40 is connected to the cooling pipe 2, and 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 through pipes 40, so as to pre-dissipate heat and dissipate the steam in contact with the two cooling pipes 2, so that the phase-changed gas working medium in the two cooling pipes 2 is phase-changed into a liquid working medium again, and then flows back into the connected vertical shells 11, so as to complete the effect of initially dissipating heat and cooling the heat of the battery module.

[0040] Reference Figure 7 and Figure 8 As shown, a guide slide rod 44 is hollow inside the connecting through pipe 40, a guide slider 45 is provided on the upper limit sleeve of the guide slide rod 44, and an adjustment spring 46 is provided on the guide slide rod 44 and located between the guide slider 45 and the cooling pipe 2. When in use, the elastic force provided by the connected adjustment spring 46 enables the guide slider 45 to always have a driving force to slide axially along the connected guide slide rod 44.

[0041] Reference Figure 8 and Fig. 9 As shown, a guide slope 450 is symmetrically provided at one end of the guide slider 45 close to the sliding block 41. When the guide slider 45 is driven to slide in the direction close to the sliding block 41, after the guide slider 45 contacts the sliding block 41, as the guide slider 45 continues to slide, the sliding block 41 moves up along the guide slope 450 on the guide slider 45, thereby being separated from the connected connecting pipe 40, so that the liquid storage chamber 100 is connected to the cooling pipe 2.

[0042] 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.

[0043] Reference Fig. 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.

[0044] 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.

[0045] Further, refer to Figures 7 to 10As shown, there are multiple guide tubes 47 between two adjacent cooling pipes 2, and the multiple guide tubes 47 are evenly spaced along the length direction of the connected cooling pipes 2. The multiple guide tubes 47 commonly set between two adjacent cooling pipes 2 effectively increase the rate at which the cooling medium in the cooling pipe 2 is introduced into another adjacent cooling pipe 2, thereby improving the efficiency of heat dissipation and cooling of the battery pack as a whole, thereby effectively controlling the temperature consistency between each battery module monomer.

[0046] Reference Figures 7 to 10 As shown, 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 guide pipes 47 together form a serpentine structure with end-to-end connection effect, wherein several guide pipes 47 on the cooling pipes 2 at both ends of the serpentine structure pass out of the horizontal shell 10 to allow the cooling medium to be introduced into the cooling pipe 2. By controlling the flow direction of the cooling medium between all cold zone pipelines, the retention time of the cooling medium in the cooling pipe 2 is increased, thereby achieving the effect of improving the heat dissipation and cooling effect of the steam after phase change therein.

[0047] Reference Figures 7 to 10 As shown, all cooling pipes 2 are fitted with the partition baffle 12. During use, since the liquid storage cavity 100 on the upper side of the partition baffle 12 stores cooling medium, when the cooling medium is not introduced into the cooling pipe 2, the fitting arrangement of the cooling pipe 2 and the partition baffle 12 can achieve the effect of pre-cooling the steam after phase change in the cooling pipe 2. After the cooling medium is introduced into the cooling pipe 2, the cold zone medium is driven to flow along the cooling pipe 2 and the guide pipe 47, and the steam after phase change is dissipated and cooled again, effectively improving the efficiency of heat dissipation and cooling of the battery pack.

[0048] Further, as an optional embodiment, one end of a plurality of guide tubes 47 passing through the horizontal shell 10 on any side of the horizontal shell 10 is connected to a bent connecting tube 48, which is passed through the horizontal shell 10 and is connected to the guide tube 47 and the liquid storage chamber 100 at the same time.

[0049] During use, the cooling medium is first injected into the liquid storage chamber 100, and then flows into the cooling pipe 2 through the bent connecting tube 48 and the connected guide tube 47, so that the cooling medium in the liquid storage chamber 100 always maintains a low temperature, so as to pre-transfer the low temperature to the cooling pipe 2 attached to the lower side of the liquid storage chamber 100, thereby effectively increasing the efficiency and effect of the cooling pipe 2 in dissipating heat and cooling the gas medium after phase change.

[0050] Example 2: Reference Figures 7 to 10As shown, on the basis of Example 1, in order to further improve the effect of heat dissipation and cooling of the high-heat area of ​​the battery stack, the size of the guide slider 45 is set to be slightly smaller than the internal size of the cooling pipe 2, and all the guide sliders 45, connecting through pipes 40, limiting pipe sleeves 42 and sliding blocks 41 are arranged close to the side of the bent connecting pipe 48, that is, located close to one end of the connected cooling pipe 2. In the initial state, the guide slider 45 is spaced a distance from the driven slide rod 410 and is closer to the end of the cooling pipe 2.

[0051] During use, since the size of the guide slider 45 in the cooling pipe 2 is slightly smaller than the internal size of the cooling pipe 2 and is set toward one end of the cooling pipe 2, the gas medium after the temperature rises and phase change in the vertical shell 11 is passively divided into a large area a and a small area b after rising to the connected cooling pipe 2. Then, as the rising gas medium increases, the air pressure in the small area b will first be greater than that in the large area a, and then gradually become 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 will tend to flow toward the large area a along the guide slope 450 on the guide slider 45 and the gap between the guide slider 45 and the cooling pipe 2, thereby pushing the guide slider 45 in the cooling pipe 2 to slide in the direction close to the driven slide rod 410, and at the same time driving the connected elastic member 43 to be compressed. It should be noted that in this process, the cooling medium has not yet been introduced into the liquid storage chamber 100 and several cooling pipes 2.

[0052] After the guiding inclined surface 450 on the guide slider 45 contacts the driven slider 410, the driven slider 410 and the blocking block are pushed upward, so that the cooling pipe 2, the connecting pipe 40 and the liquid storage chamber 100 are connected. At this time, the cooling medium is introduced into the liquid storage chamber 100, so that the cooling medium in the liquid storage chamber 100 moves down to the cooling pipe 2 at the connecting point first, and at the same time enters the serpentine structure formed by several cooling pipes 2 and guide pipes 47 through the bending connecting pipe 48 and the guide pipe 47, so as to achieve the effect of preferentially dissipating heat and cooling the high temperature area in the battery pack, and then dissipating heat and cooling all the battery packs in turn, effectively improving the efficiency and effect of heat dissipation and cooling of the battery pack.

[0053] During operation: the first step is to inject the cooling medium into the liquid storage chamber 100 in the cooling shell 1, so that the cooling medium flows from the liquid storage chamber 100 to the guide tube 47, then flows to the cooling pipe 2, and flows in sequence along the guide tube 47 between two adjacent cooling pipes 2, so as to achieve the effect of heat dissipation and cooling of the battery pack as a whole.

[0054] Step 2: Before the cooling medium in the liquid storage chamber 100 flows to the cooling pipe 2 through the guide pipe 47, due to the heat generated by the battery module monomer, the guide sliders 45 in the two cooling pipes 2 on both sides of the battery module are driven by the pressure difference formed by the heated steam in the cooling pipes, and the connecting vessels 4 on the two cooling pipes are opened, so that the cooling medium injected into the liquid storage chamber 100 is introduced into the two connected cooling pipes through the connecting vessel 4 in advance, and the battery module in the cooling interval is cooled in advance.

[0055] Step 3: At the same time, the cooling medium in the liquid storage chamber 100 enters into the serpentine structure pipeline formed between the plurality of guide tubes 47 and the cooling pipeline through the bent connecting tube 48 and the guide tube 47, and performs secondary heat dissipation cooling on the battery modules generating heat in the above cooling interval, thereby achieving uniform cooling of the battery pack as a whole and effectively controlling the temperature consistency between each battery module.

[0056] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered as exemplary and non-restrictive in all respects.

[0057] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flat plate heat pipe zoned cooling structure for a high-heat zone 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 absorbing cores (3) are provided corresponding to the cooling pipes (2) and are position-limitedly connected in the vertical shell (11).

2. The flat plate heat pipe zoned cooling structure for the high heat zone of a battery stack according to claim 1 is characterized in that: 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).

3. The flat plate heat pipe zoned cooling structure for the high heat zone of a battery stack according to claim 1 is characterized in that: 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).

4. The flat plate heat pipe zoned cooling structure for the high heat zone of a battery stack according to claim 3 is characterized in that: 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).

5. The flat plate heat pipe zoned cooling structure for the high heat zone of a battery stack according to claim 4 is characterized in that: A guiding inclined surface (450) is symmetrically arranged at one end of the guide sliding block (45) close to the sliding resistance block (41).

6. The flat plate heat pipe zoned cooling structure for the high heat zone of a battery stack according to claim 4 is characterized in that: A limiting clamp 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).

7. The flat plate heat pipe zoned cooling structure for the high heat zone of a battery stack according to claim 1 is characterized in that: Any two adjacent cooling pipes (2) are connected to each other via a guide pipe (47).

8. The flat plate heat pipe zoned cooling structure for the high heat zone of a battery stack according to claim 1 is characterized in that: 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).

9. The flat plate heat pipe zoned cooling structure for the high heat zone of a 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.

10. The flat plate heat pipe zoned cooling structure for the high heat zone of a battery stack according to claim 1, characterized in that: All of the cooling pipes (2) are arranged to fit in with the partition baffle (12).

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