Cylindrical battery thermal management system suitable for high and low temperature environment and application method thereof

Abstract

The invention provides a cylindrical battery thermal management system suitable for high and low temperature environments, which comprises a plurality of cylindrical batteries, a group member, a micro heat pipe array plate and a liquid guide plate, and is characterized in that the cylindrical batteries are arranged in a rectangular array; the plurality of group components are used for forming the cylindrical batteries in rows / columns into a linear module with a rectangular three-dimensional appearance, and the group components have heat conductivity; the number of the micro heat pipe array plates is at least two, and the two micro heat pipe array plates are of an L-shaped plate-shaped structure, are oppositely arranged and abut against the grouped components. The two micro heat pipe array plates abut against liquid guide plates respectively. According to the invention, only two liquid guide plates are required to be used as heating or cooling elements, so that the battery module has the advantages of simple structure and convenience in implementation, the temperature uniformity of the battery module can be ensured, and the application cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery modules, and in particular to a cylindrical battery thermal management system suitable for high and low temperature environments and an application method thereof. Background Art

[0002] As a functional component of electric vehicles, lithium-ion batteries have the advantages of no memory effect, high energy density, and long cycle life. However, the excellent performance of lithium-ion batteries is limited by temperature changes, and their high performance only exists in a suitable temperature range. A large number of studies have shown that the optimal operating temperature range of lithium-ion batteries is 20℃~40℃, and the temperature gradient between cells and modules does not exceed 5℃. Excessive temperature may cause thermal runaway of the battery and cause safety accidents. When the temperature is too low, the internal resistance of the lithium-ion battery increases, the capacity decays, and lithium battery charge may occur at low temperatures, posing a safety hazard. Therefore, it is crucial to develop an efficient and reasonable battery thermal management system.

[0003] The invention patent with the existing authorization announcement number CN106785236B discloses a thermal management system and method for a cylindrical battery pack. The system includes a special-shaped heat conductive plate, a micro heat pipe array plate and a heat source. When dissipating heat, the planar structure of the plate surface of the special-shaped heat conductive plate fits the evaporation section of the micro heat pipe array plate. The evaporation section of the micro heat pipe array plate absorbs the heat energy of the cylindrical battery pack transmitted by the special-shaped heat conductive plate, and then a heat pipe effect occurs, and then the heat is exchanged with the outside through the condensation section of the micro heat pipe array plate; when preheating, the heat source is set in the evaporation section of the micro heat pipe array plate, and the planar structure of the plate surface of the special-shaped heat conductive plate fits the condensation section of the micro heat pipe array plate. The evaporation section of the micro heat pipe array plate absorbs the heat energy of the heat source, and then a heat pipe effect occurs. Then the heat is released by the condensation section of the micro heat pipe array plate and is conducted to the cylindrical battery pack through the special-shaped heat conductive plate.

[0004] As in the above technical solution, the heat dissipation of the cylindrical battery is achieved through the evaporation and condensation of the micro heat pipe array plate. When heating is performed, the special-shaped heat conductive plate is heated by the heat source, and then the special-shaped heat conductive plate heats the cylindrical battery;

[0005] Among them, the heat source used is an electric heating element or a heated fluid medium. In a specific embodiment, the heat source is set on the evaporation section of the micro heat pipe array plate. However, in a battery module, there are several cylindrical batteries, which requires a large number of heat sources to meet the heating needs of the battery module. At the same time, based on the energy density of the battery module, the micro heat pipe array plate will not be set very thick, but usually thin, which will cause the problem of high difficulty in integrating the heat source. Therefore, it is urgent to improve the relevant existing technologies. Summary of the invention

[0006] In view of this, the present invention proposes a cylindrical battery thermal management system and an application method thereof which has a simple structure, is easy to prepare, and has high heating and heat dissipation efficiency and is suitable for high and low temperature environments, so as to solve the problems of difficult integration and high application difficulty of the heating and heat dissipation related structures of the existing battery modules.

[0007] The technical solution of the present invention is achieved in this way:

[0008] On the one hand, the present invention provides a cylindrical battery thermal management system suitable for high and low temperature environments, including a cylindrical battery, a grouping component, a micro heat pipe array plate and a liquid guide plate, wherein:

[0009] There are several cylindrical batteries arranged in a rectangular array;

[0010] A plurality of grouping components are provided, which are used to form a linear module with a rectangular three-dimensional appearance by forming rows / columns of cylindrical batteries, and the grouping components have thermal conductivity;

[0011] At least two micro heat pipe array plates are provided, the two micro heat pipe array plates are in an L-shaped plate structure, and the two micro heat pipe array plates are arranged opposite to each other and abut against the grouped component;

[0012] The two micro heat pipe array plates are each supported by a liquid guide plate, wherein one micro heat pipe array plate and the liquid guide plate are used for heating the linear module, and the other micro heat pipe array plate and the liquid guide plate are used for heat dissipation of the linear module.

[0013] On the basis of the above technical solution, preferably, the grouped components include a plurality of heat conducting members and heat conducting pads, wherein:

[0014] The heat conductive member is in a U-shaped structure, the concave surface of the arc-shaped portion of the heat conductive member abuts against one cylindrical battery, and the convex surface of the arc-shaped portion of the heat conductive member abuts against another adjacent cylindrical battery;

[0015] The straight plate portion of the heat conductive member abuts against the arc portion of another heat conductive member; the heat conductive pad is arranged between the cylindrical battery and the heat conductive member;

[0016] The arc-shaped parts of the two heat-conducting parts located at the ends of the linear module are arranged with rectangular structures on the outside.

[0017] On the basis of the above technical solution, preferably, the heat conducting member further comprises a clamping portion, two clamping portions are provided, and the two clamping portions are connected to the straight plate portion;

[0018] The clamping portion is an arc-shaped plate structure, and the clamping portion is concentric with the arc-shaped portion.

[0019] Based on the above technical solution, preferably, the micro heat pipe array plate includes a first plate surface and a second plate surface, and one side of the first plate surface and the second plate surface are connected, wherein:

[0020] The first plate surface abuts against the grouped components, and the first plate surface corresponds to the circumference of the cylindrical battery;

[0021] The second plate surface corresponds to the end surface of the cylindrical battery, the second plate surface is spaced apart from the cylindrical battery, and the second plate surface abuts against the liquid guide plate.

[0022] Based on the above technical solution, preferably, a single linear module corresponds to four micro heat pipe array plates, wherein:

[0023] The second plate surfaces of the two micro heat pipe array plates located on the same side of the linear module each correspond to one end of the cylindrical battery;

[0024] The first plate surfaces of the two micro heat pipe array plates located on both sides of the linear module correspond to the circumference of the cylindrical battery, and the second plate surfaces of the two micro heat pipe array plates correspond to one end of the cylindrical battery respectively.

[0025] On the basis of the above technical solution, preferably, it also includes a module frame, the module frame includes side panels, clamping plates and end panels, wherein:

[0026] Two side panels, two clamping panels and two end panels are provided to form a rectangular box body;

[0027] The linear module and the micro heat pipe array plate are arranged in a rectangular box, and the second plate surface of the micro heat pipe array plate abuts against the end plate;

[0028] The end plate is provided with a containing groove, and the liquid guide plate is arranged in the containing groove.

[0029] On the basis of the above technical solution, preferably, the module frame further includes a bottom plate and a support beam, wherein:

[0030] The bottom plate and the support beam are arranged on the sides of the side plates;

[0031] The second plate surface of the micro heat pipe array plate is clamped between the bottom plate and the support beam;

[0032] The grouped components abut against the support beam, and the end of the first board surface of the micro heat pipe array board abuts against the support beam.

[0033] On the basis of the above technical solution, preferably, a single linear module corresponds to four micro heat pipe array plates, wherein two micro heat pipe array plates arranged opposite to each other are provided with channels between the other two micro heat pipe array plates;

[0034] The support beam is a hollow structure, and the inner hole of the support beam passes through the side plate.

[0035] On the basis of the above technical solution, preferably, the linear modules are spliced ​​with each other through micro heat pipe array plates to provide pre-tightening force, and the micro heat pipe array plates are spliced ​​with each other through module frames to provide pre-tightening force.

[0036] On the other hand, the present invention provides an application method of the above cylindrical battery thermal management system suitable for high and low temperature environments, comprising the following steps:

[0037] S1. According to the application environment, determine the application conditions of the cylindrical battery to perform heating or heat dissipation work;

[0038] S2. Of the two liquid guide plates, one liquid guide plate is configured to circulate a heating medium, and the other liquid guide plate is configured to circulate a cooling medium;

[0039] S3. The cylindrical battery interacts thermally with the grouped components, and the micro heat pipe array plate interacts thermally with the grouped components, so that the liquid guide plate heats or dissipates heat for the cylindrical battery.

[0040] The cylindrical battery thermal management system suitable for high and low temperature environments and its application method of the present invention have the following beneficial effects compared with the prior art:

[0041] (1) By setting an L-shaped plate-shaped micro heat pipe array plate, and two micro heat pipe array plates are relatively pressed against the two sides of the grouped components in the linear module, the micro heat pipe array plate is also connected to a liquid guide plate, so that when heating and dissipating the battery module, one liquid guide plate can be used to circulate the cooling medium, and the other liquid guide plate is used to circulate the heating medium. The grouped components can transfer the heat of the liquid guide plate to the linear module, and can also transfer the heat generated by the cylindrical battery in the linear module to the liquid guide plate circulating the cooling medium, thereby achieving heating or dissipating the battery module; in this structure, only two liquid guide plates need to be set as heating or cooling elements, which has the advantages of simple structure and convenient implementation, can ensure the uniform temperature of the battery module, and reduce the application cost;

[0042] (2) The grouped components are provided with a U-shaped heat-conducting member, and the heat-conducting member clamps a cylindrical battery and abuts against another adjacent cylindrical battery. In this way, after forming a linear module, there is good stability between the battery and the heat-conducting member, which can ensure reliable structural application;

[0043] (3) By setting up a module frame, it can provide pre-tightening force for the cylindrical battery thermal management system to ensure the stability of the overall structure. At the same time, the support beam of the module frame can support the micro heat pipe array plate to ensure the convenience of grouping; and the support beam is set as a hollow structure, which is convenient for laying lines to connect the electrodes of the cylindrical battery, and can be used for gas circulation to assist in heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 A three-dimensional diagram of a cylindrical battery thermal management system suitable for high and low temperature environments according to the present invention;

[0046] Figure 2 It is a front view of the cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0047] Figure 3 For the present invention Figure 2 Middle AA section view;

[0048] Figure 4 A top view of the cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0049] Figure 5 For the present invention Figure 4 Middle BB section;

[0050] Figure 6 An exploded diagram of the cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0051] Figure 7 An exploded diagram of a linear module of a cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0052] Figure 8 A top view of a linear module of a cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0053] Fig. 9 A three-dimensional diagram of a heat-conducting member of a cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0054] Fig.10 A three-dimensional diagram of the layout structure of the micro heat pipe array plate of the cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0055] Fig.11 This is a diagram of the matching structure of the support beam and the micro heat pipe array plate of the cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0056] Fig.12 This is a diagram of the matching structure of the linear module and the micro heat pipe array plate of the cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0057] Fig.13 This is a layout structure diagram of the support beam of the cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0058] Fig.14 This is a structural diagram of a heat-conducting component support frame of a cylindrical battery thermal management system suitable for high and low temperature environments of the present invention;

[0059] In the figure: 1. cylindrical battery; 2. grouped component; 21. heat conducting member; 211. arc portion; 212. straight plate portion; 213. clamping portion; 22. thermal pad; 3. micro heat pipe array plate; 31. first plate surface; 32. second plate surface; 301. channel; 4. liquid guide plate; 5. module frame; 51. side plate; 52. clamping plate; 53. end plate; 54. bottom plate; 55. support beam; 501. accommodating groove; 6. support plate; 100. linear module. DETAILED DESCRIPTION

[0060] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] like Figures 1 to 14 As shown, the cylindrical battery thermal management system suitable for high and low temperature environments of the present invention includes a cylindrical battery 1, a grouping component 2, a micro heat pipe array plate 3, a liquid guide plate 4, a module frame 5 and a support plate 6.

[0062] A plurality of cylindrical batteries 1 are arranged in a rectangular array; a plurality of grouping components 2 are arranged to form a linear module 100 having a rectangular three-dimensional appearance by forming the cylindrical batteries 1 in rows / columns, and the grouping components 2 have thermal conductivity;

[0063] like Figures 6 to 8 As shown, by using the grouping member 2 to form the cylindrical battery 1 into a linear module 100 with a rectangular three-dimensional external plug-in, the convenience of grouping the cylindrical battery 1 can be improved to facilitate the formation of a battery module;

[0064] Specifically, the battery module is composed of a plurality of linear modules 100 .

[0065] Specifically, the grouped component 2 includes a plurality of heat-conducting members 21 and a heat-conducting pad 22, wherein the heat-conducting member 21 is in a U-shaped structure, the concave surface of the arc-shaped portion 211 of the heat-conducting member 21 abuts against one cylindrical battery 1, and the convex surface of the arc-shaped portion 211 of the heat-conducting member 21 abuts against another adjacent cylindrical battery 1; the straight plate portion 212 of the heat-conducting member 21 abuts against the arc-shaped portion of another heat-conducting member 21; the heat-conducting pad 22 is arranged between the cylindrical battery 1 and the heat-conducting member 21;

[0066] As in the above structure, in the grouped component 2, the heat conductive member 21 clamps the cylindrical battery 1 through the arc portion 211, and the arc portion 211 also abuts against the adjacent cylindrical battery 1, and the straight plate portion 212 connects another adjacent heat conductive member 21. This structure can ensure that the grouped component 2 and the cylindrical battery 1 form a linear module 100 with good structural stability;

[0067] When used, if heating is required, the grouping component 2 can transfer heat to the cylindrical battery 1 to achieve heating of the battery module; when heat dissipation is required, the heat generated by the cylindrical battery 1 can be transferred to the grouping component 2 to achieve heat dissipation;

[0068] Specifically, Figure 8 As shown, the arc-shaped portions 211 of the two heat-conducting members 21 at the ends of the linear module 100 are arranged with rectangular structures on the outside; thus, the linear module 100 can have a rectangular three-dimensional appearance;

[0069] Specifically, in a single linear module 100, six cylindrical batteries 1 and six heat conducting members 21 are provided. In order to connect the heat conducting members 21, the end shape of the straight plate portion 212 in the heat conducting member 21 is adaptively adjusted so that adjacent heat conducting members 21 can be spliced.

[0070] In the figure, the three heat-conducting parts 21 on one side are symmetrical with the three heat-conducting parts 21 on the other side, which leaves a cavity in the middle part. The cavity can be filled with fillers such as silicone thermal conductive glue to ensure the relative stability of the two cylindrical batteries 1 in the middle.

[0071] Specifically, the thermal pad 22 is a silicone pad and is installed between the cylindrical battery 1 and the thermal conductive member 21 by interference fit;

[0072] Specifically, the heat conducting member 21 may be an aluminum heat conducting element.

[0073] like Figures 2 to 4 As shown, at least two micro heat pipe array plates 3 are provided, and the two micro heat pipe array plates 3 are in an L-shaped plate structure. The two micro heat pipe array plates 3 are arranged opposite to each other and abut against the grouped component 2; the two micro heat pipe array plates 3 each abut against a liquid guide plate 4, wherein one micro heat pipe array plate 3 and the liquid guide plate 4 are used for heating the linear module 100, and the other micro heat pipe array plate 3 and the liquid guide plate 4 are used for heat dissipation of the linear module 100;

[0074] As in the above structure, after the cylindrical battery 1 forms a linear module 100, it is convenient to arrange the micro heat pipe array plate 3. Two micro heat pipe array plates 3 are relatively arranged on both sides of the linear module 100, and the micro heat pipe array plate 3 is connected to the liquid guide plate 4;

[0075] When heating is required, a liquid guide plate 4 is used to circulate the heat supply medium, and then the heat is transferred to the cylindrical battery 1 through the grouping component 2, thereby achieving heating of the linear module 100;

[0076] When heat dissipation is required, another liquid guide plate 4 is used to circulate the coolant. After the heat of the cylindrical battery 1 is transferred to the grouping component 2, the liquid guide plate 4 can take away the heat through the circulation of the coolant, thereby achieving heat dissipation of the linear module 100.

[0077] In the specific arrangement, the condensing section of one micro heat pipe array plate 3 abuts against the grouped component 2 , and the evaporating section of another micro heat pipe array plate 3 abuts against the grouped component 2 , which are respectively used to realize heating and heat dissipation of the linear module 100 .

[0078] In specific applications, the liquid guide plate 4 for circulating the heating medium can be replaced by a heating plate, such as an electric heating plate;

[0079] In specific application, a snake-shaped flow channel is provided inside the liquid guide plate 4, one end of the flow channel is a liquid inlet, and the other end is a liquid outlet, so as to allow the medium to circulate and increase the heat transfer area.

[0080] Specifically, in the cylindrical battery thermal management system structure, the internal flow channel diameter of the liquid guide plate 4 is 4 mm, and the thickness of the thermal pad 22 is 1 mm.

[0081] like Fig. 9 As shown, the heat conducting member 21 further includes a clamping portion 213, two clamping portions 213 are provided, and the two clamping portions 213 are connected to the straight plate portion 212; the clamping portion 213 is an arc-shaped plate structure, and the clamping portion 213 is concentric with the arc-shaped portion 211;

[0082] As in the above structure, when the heat conductive member 21 fixes the cylindrical battery 1, the cylindrical battery 1 is clamped between the arc portion 211 and the clamping portion 213, so that the overall structural stability of the linear module 100 can be ensured;

[0083] At the same time, this structure can ensure that the cylindrical battery 1 and the thermal pad 22 are stably attached to each other to improve the heat conduction efficiency, and can also ensure the stability of the electrical connection structure between the cylindrical batteries 1.

[0084] like Fig.10 and Fig.12As shown, the micro heat pipe array plate 3 includes a first plate surface 31 and a second plate surface 32, and one side of the first plate surface 31 and the second plate surface 32 are connected, wherein the first plate surface 31 abuts against the grouping component 2, and the first plate surface 31 corresponds to the circumferential surface of the cylindrical battery 1; the second plate surface 32 corresponds to the end surface of the cylindrical battery 1, the second plate surface 32 is spaced from the cylindrical battery 1, and the second plate surface 32 abuts against the liquid guide plate 4;

[0085] As in the above structure, when the micro heat pipe array plate 3 is installed, the first plate surface 31 is used to support the grouped component 2, and the second plate surface 32 is used to connect the liquid guide plate 4. At the same time, the second plate surface 32 is spaced from the cylindrical battery 1, so that it is convenient to lay out the circuit to realize the series and parallel connection between the cylindrical batteries 1.

[0086] like Fig.12 As shown, a single linear module 100 corresponds to four micro heat pipe array plates 3, wherein the second plate surfaces 32 of the two micro heat pipe array plates 3 located on the same side of the linear module 100 correspond to one end of the cylindrical battery 1; the first plate surfaces 31 of the two micro heat pipe array plates 3 located on both sides of the linear module 100 correspond to the circumferential surface of the cylindrical battery 1, and the second plate surfaces 32 of the two micro heat pipe array plates 3 correspond to one end of the cylindrical battery 1;

[0087] As in the above structure, when the micro heat pipe array plates 3 are arranged, by relatively arranging two micro heat pipe array plates 3 on both sides of the linear module 100, the linear module 100 can be stably clamped to ensure the stability of the grouped structure;

[0088] At the same time, the second plate surfaces 32 of the two micro heat pipe array plates 3 located on the same side of the linear module 100 correspond to one end of the cylindrical battery 1, so that corresponding to one linear module 100, there are two micro heat pipe array plates 3 connected to the liquid guide plate for heating, and two micro heat pipe array plates 3 connected to the liquid guide plate for heat dissipation;

[0089] This structure allows the heat of the linear module 100 to be transferred through both ends and both sides when heating and dissipating heat, thereby improving the heat conduction efficiency, enhancing the heating and heat dissipation capabilities, and fully ensuring the temperature uniformity of the battery module.

[0090] like Figures 1 to 6 As shown, the module frame 5 includes a side plate 51, a clamping plate 52 and an end plate 53, wherein two side plates 51, two clamping plates 52 and two end plates 53 are provided to form a rectangular box; the linear module 100 and the micro heat pipe array plate 3 are arranged in the rectangular box, and the two plate surfaces 32 of the micro heat pipe array plate 3 abut against the end plate 53; the end plate 53 is provided with a receiving groove 501, and the liquid guide plate 4 is arranged in the receiving groove 501;

[0091] As in the above structure, when the cylindrical battery 1 is grouped, the linear module 100 and the micro heat pipe array plate 3 can be clamped and fixed by the side plate 51, the clamping plate 52 and the end plate 53. When fastening, the side plate 51, the clamping plate 52 and the end plate 53 can be fixedly connected by bolts;

[0092] Specifically, the second plate surface 32 of the micro heat pipe array plate 3 abuts against the end plate 53, and then the liquid guide plate 4 is assembled onto the end plate 53. When heat transfer is performed, the micro heat pipe array plate 3 and the liquid guide plate 4 perform thermal interaction through the end plate 53.

[0093] In order to ensure the stability of the installation of the liquid guiding plate 4 , the end plate 53 is provided with a receiving groove 501 for receiving the liquid guiding plate 4 .

[0094] like Fig.11 and Fig.13 As shown, the module frame 5 further includes a bottom plate 54 and a support beam 55, wherein the bottom plate 54 and the support beam 55 are arranged on the side of the side plate 51; the second plate surface 32 of the micro heat pipe array plate 3 is clamped between the bottom plate 54 and the support beam 55; the grouping component 2 abuts against the support beam 55, and the end of the first plate surface 31 of the micro heat pipe array plate 3 abuts against the support beam 55;

[0095] As in the above structure, the bottom plate 54 and the support beam 55 are used to clamp the second plate surface 32 of the micro heat pipe array plate 3 to achieve positioning of the micro heat pipe array plate 3, so as to facilitate integration of the linear module 100 on the micro heat pipe array plate 3;

[0096] At the same time, by providing the support beam 55 , a certain gap can be left between the linear module 100 and the second plate surface 32 of the micro heat pipe array plate 3 , thereby facilitating the layout of the circuits for connecting the cylindrical batteries 1 in series and parallel.

[0097] When assembling the battery module, the linear module 100 is first integrated on the two side plates 51 , and then the two side plates 51 and the integrated linear module 100 are integrated and fixed by the clamping plate 52 and the end plate 53 .

[0098] like Figure 3 and Fig.13 As shown, a single linear module 100 corresponds to four micro heat pipe array plates 3 , wherein two micro heat pipe array plates 3 disposed opposite to each other are provided with channels 301 between the other two micro heat pipe array plates 3 ;

[0099] As in the above structure, the channel 301 is used to lay out the circuits of the cylindrical batteries 1 in series and parallel, and a through hole is opened on the clamping plate 52 to lead out the circuits;

[0100] In some embodiments, the support beam 55 is a hollow structure, and the inner hole of the support beam 55 passes through the side plate 51;

[0101] In this structure, the support beam 55 is a hollow structure. Firstly, it is convenient to lay out the lines into the module frame 5 to connect the electrodes of the cylindrical battery 1. Secondly, it can be used for gas circulation to assist in heat dissipation.

[0102] Specifically, the linear modules 100 and the linear modules 100 are spliced ​​together through the micro heat pipe array plate 3 to provide pre-tightening force, and the micro heat pipe array plate 3 and the micro heat pipe array plate 3 are spliced ​​together through the module frame 5 to provide pre-tightening force;

[0103] As described above, in the grouping structure of the battery modules in the present system, the linear modules 100 are fastened only by the micro heat pipe array plates 3, and the micro heat pipe array plates 3 are fastened only by the module frames 5. Thus, no additional fasteners are required for grouping, which improves the convenience of grouping, disassembly and maintenance of the battery modules and reduces the difficulty of grouping and application costs.

[0104] like Fig.14 As shown, in some embodiments, a support plate 6 is provided on the micro heat pipe array plate 3 to assist the support beam 55 in supporting the grouped component 2 .

[0105] The application method of the cylindrical battery thermal management system of the present invention is suitable for high and low temperature environments, comprising the following steps:

[0106] S1. According to the application environment, determine the application condition of the cylindrical battery 1 to perform heating or heat dissipation work;

[0107] S2. Of the two liquid guide plates 4, one liquid guide plate 4 is configured to flow a heating medium, and the other liquid guide plate 4 is configured to flow a cooling medium;

[0108] S3, the cylindrical battery 1 and the grouped component 2 perform thermal interaction, and the micro heat pipe array plate 3 and the grouped component 2 perform thermal interaction, so that the liquid guide plate 4 heats or dissipates heat for the cylindrical battery 1 .

[0109] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cylindrical battery thermal management system suitable for high and low temperature environments, comprising a cylindrical battery (1), characterized in that: It also includes a grouping component (2), a micro heat pipe array plate (3) and a liquid guide plate (4), wherein: The cylindrical batteries (1) are arranged in a rectangular array in a plurality of numbers; The grouping components (2) are provided in plurality and are used to form a linear module (100) having a rectangular three-dimensional appearance by forming the cylindrical batteries (1) in rows or columns, and the grouping components (2) have thermal conductivity; At least two of the micro heat pipe array plates (3) are provided, the two micro heat pipe array plates (3) are in an L-shaped plate structure, and the two micro heat pipe array plates (3) are arranged opposite to each other and abut against the grouping component (2); The two micro heat pipe array plates (3) are each abutted against a liquid guide plate (4), wherein one of the micro heat pipe array plates (3) and the liquid guide plate (4) is used for heating the linear module (100), and the other of the micro heat pipe array plates (3) and the liquid guide plate (4) is used for heat dissipation of the linear module (100).

2. The cylindrical battery thermal management system suitable for high and low temperature environments as claimed in claim 1, characterized in that: The grouped component (2) comprises a plurality of heat-conducting members (21) and heat-conducting pads (22), wherein: The heat conducting member (21) has a U-shaped structure, the concave surface of the arc-shaped portion (211) of the heat conducting member (21) abuts against one of the cylindrical batteries (1), and the convex surface of the arc-shaped portion (211) abuts against another adjacent cylindrical battery (1); The straight plate portion (212) of the heat conducting member (21) abuts against the arc-shaped portion of another heat conducting member (21); The thermal pad (22) is arranged between the cylindrical battery (1) and the thermal conductive element (21); The arc-shaped portions (211) of the two heat-conducting members (21) located at the ends of the linear module (100) are arranged with rectangular structures on the outside.

3. The cylindrical battery thermal management system suitable for high and low temperature environments as claimed in claim 2, characterized in that: The heat conducting member (21) further comprises a clamping portion (213), two of the clamping portions (213) are provided, and the two clamping portions (213) are connected to the straight plate portion (212); The clamping portion (213) is an arc-shaped plate-shaped structure, and the clamping portion (213) is concentric with the arc-shaped portion (211).

4. The cylindrical battery thermal management system suitable for high and low temperature environments as claimed in claim 1, characterized in that: The micro heat pipe array plate (3) comprises a first plate surface (31) and a second plate surface (32), wherein one side of the first plate surface (31) and the second plate surface (32) are connected, wherein: The first plate surface (31) abuts against the grouping component (2), and the first plate surface (31) corresponds to the circumferential surface of the cylindrical battery (1); The second plate surface (32) corresponds to the end surface of the cylindrical battery (1), the second plate surface (32) is spaced apart from the cylindrical battery (1), and the second plate surface (32) abuts against the liquid guide plate (4).

5. The cylindrical battery thermal management system suitable for high and low temperature environments as claimed in claim 4, characterized in that: A single linear module (100) corresponds to four micro heat pipe array plates (3), wherein: The second plate surfaces (32) of the two micro heat pipe array plates (3) located on the same side of the linear module (100) each correspond to an end of the cylindrical battery (1); The first plate surfaces (31) of the two micro heat pipe array plates (3) located on both sides of the linear module (100) correspond to the circumferential surface of the cylindrical battery (1), and the second plate surfaces (32) of the two micro heat pipe array plates (3) each correspond to an end of the cylindrical battery (1).

6. The cylindrical battery thermal management system suitable for high and low temperature environments as claimed in claim 4 or 5, characterized in that: It also includes a module frame (5), the module frame (5) includes a side plate (51), a clamping plate (52) and an end plate (53), wherein: The side plates (51), the clamping plates (52) and the end plates (53) are each provided with two to form a rectangular box body; The linear module (100) and the micro heat pipe array plate (3) are arranged in the rectangular box, and the second plate surface (32) of the micro heat pipe array plate (3) abuts against the end plate (53); The end plate (53) is provided with a containing groove (501), and the liquid guide plate (4) is arranged in the containing groove (501).

7. The cylindrical battery thermal management system suitable for high and low temperature environments as claimed in claim 6, characterized in that: The module frame (5) further comprises a bottom plate (54) and a support beam (55), wherein: The bottom plate (54) and the support beam (55) are arranged on the side surface of the side plate (51); The second plate surface (32) of the micro heat pipe array plate (3) is clamped between the bottom plate (54) and the support beam (55); The grouping component (2) abuts against the support beam (55), and the end of the first plate surface (31) of the micro heat pipe array plate (3) abuts against the support beam (55).

8. The cylindrical battery thermal management system suitable for high and low temperature environments as claimed in claim 7, characterized in that: A single linear module (100) corresponds to four micro heat pipe array plates (3), wherein two of the micro heat pipe array plates (3) disposed opposite to each other are provided with a channel (301) between the other two micro heat pipe array plates (3); The support beam (55) is a hollow structure, and the inner hole of the support beam (55) passes through the side plate (51).

9. The cylindrical battery thermal management system suitable for high and low temperature environments as claimed in claim 6, characterized in that: The linear modules (100) and the linear modules (100) are spliced ​​together through the micro heat pipe array plate (3) to provide a pre-tightening force, and the micro heat pipe array plates (3) and the micro heat pipe array plates (3) are spliced ​​together through the module frame (5) to provide a pre-tightening force.

10. An application method of a cylindrical battery thermal management system suitable for high and low temperature environments as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. According to the application environment, determining the application condition of the cylindrical battery (1) to perform heating or heat dissipation work; S2. Of the two liquid-conducting plates (4), one of the liquid-conducting plates (4) is configured to circulate a heating medium, and the other of the liquid-conducting plates (4) is configured to circulate a cooling medium; S3. The cylindrical battery (1) and the grouped component (2) perform thermal interaction, and the micro heat pipe array plate (3) and the grouped component (2) perform thermal interaction, so as to enable the liquid guide plate (4) to heat or dissipate heat for the cylindrical battery (1).

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