Battery pack, energy storage device and power generation system

Abstract

The utility model belongs to the technical field of energy storage power supplies, and relates to a battery pack, an energy storage device and a power generation system.The battery pack comprises a battery core set and a first air deflector, the battery core set at least comprises a first battery core and a second battery core which are arranged adjacently, and the first battery core and the second battery core are stacked in the gravity direction; a first ventilation gap is formed between the first battery cell and the second battery cell, the first air guide plate is arranged in the first ventilation gap, the first air guide plate is provided with a first air guide part and a second air guide part which are deviated from each other, the first air guide part and the second air guide part are symmetrically arranged, the first air guide part faces the first battery cell, and the second air guide part faces the second battery cell. The first battery core and the first air guide part are matched to form a first air guide channel, the second air guide part faces the second battery core, and the second battery core and the second air guide part are matched to form a second air guide channel. According to the technical scheme provided by the invention, ventilation and heat dissipation can be carried out on the interior of the battery pack, the heat dissipation uniformity of the battery cells is improved, and the temperature difference between the single battery cells is prevented from being too large.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage power supply, and more specifically, to a battery pack, an energy storage device and a power generation system. Background Art

[0002] The energy storage battery cluster is a battery module composed of multiple battery packs. The battery pack achieves the advantages of high energy and high density by combining single cells in series or series-parallel.

[0003] The battery pack will emit heat during operation and needs to be cooled. In the prior art, the heat dissipation structure mainly dissipates heat on the outer side of the battery pack, while the heat dissipation effect between the closely arranged battery cells inside the battery pack is poor. The heat dissipation of the battery pack is uneven when in use, which can easily cause excessive temperature differences between the single cells, destroy the consistency of the battery pack, and further affect the performance and service life of the battery pack. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the present application is: in the prior art, the heat dissipation of the battery pack is unevenly distributed when in use, which can easily cause excessive temperature differences between single cells, destroy the consistency of the battery pack, and further affect the performance and service life of the battery pack.

[0005] In order to solve the above technical problems, the present application provides a battery pack, which adopts the following technical solutions:

[0006] A battery pack comprises: a battery core group and a first air guide plate;

[0007] The battery core group comprises at least a first battery core and a second battery core arranged adjacent to each other, the first battery core and the second battery core are stacked along the gravity direction, and a first ventilation gap is formed between the first battery core and the second battery core;

[0008] The first air guide plate is arranged in the first ventilation gap, the first air guide plate has a first air guide surface and a second air guide surface which are opposite to each other, a first air guide portion and a first limit assembly facing the first battery core are arranged on the first air guide surface, a second air guide portion and a second limit assembly facing the second battery core are arranged on the second air guide surface, the first air guide portion and the second air guide portion are symmetrically arranged, and the first limit assembly and the second limit assembly are symmetrically arranged; the first battery core and the first air guide portion cooperate to form a first air guide channel, and the second battery core and the second air guide portion cooperate to form a second air guide channel;

[0009] The first limiting component includes a first limiting member, a second limiting member, a third limiting member and a fourth limiting member, the first limiting member and the second limiting member are relatively arranged in a first horizontal direction, the third limiting member and the fourth limiting member are relatively arranged in a second horizontal direction, the first horizontal direction is perpendicular to the second horizontal direction, and the first wind guide surface, the first limiting member, the second limiting member, the third limiting member and the fourth limiting member enclose a limiting space for accommodating the first battery cell.

[0010] Further, the first air guide portion includes a first flow divider and at least two first support members arranged at intervals, the first flow divider and the first support member are respectively in contact with the first battery core, the first air guide channel is located between the first support members arranged at intervals, the first flow dividers are distributed at intervals in the first air guide channel, and the first support member is provided with a first ventilation slot facing the first battery core;

[0011] The first limiting member and the second limiting member are arranged at the edge of the first wind guide surface opposite to each other along the first horizontal direction, the third limiting member and the fourth limiting member are arranged at the edge of the first wind guide surface opposite to each other along the second horizontal direction, and the first limiting member and / or the second limiting member are detachably connected to the first wind guide plate.

[0012] In order to solve the above technical problems, the embodiment of the present application further provides an energy storage device, which adopts the following technical solution:

[0013] An energy storage device comprises a battery compartment, wherein the battery compartment comprises a box, an airflow driving member and an energy storage module, wherein the energy storage module is fixed in the box, the airflow driving member is arranged on the box, and the energy storage module comprises the above-mentioned battery pack;

[0014] The number of the battery packs is at least two, the battery packs are arranged at intervals along a second direction, the second direction is perpendicular to the gravity direction, and a second ventilation gap is provided between adjacent battery packs;

[0015] A third ventilation gap is provided between the outer wall surface of the energy storage module and the box body, and the first ventilation gap, the second ventilation gap, the third ventilation gap and the air outlet of the airflow driving member are connected to each other.

[0016] Furthermore, the battery pack also includes two second air guide plates, which are fixed at both ends of the battery pack along the gravity direction, and a third air guide surface is provided on the side of the second air guide plate facing the first air guide plate, and a third air guide part and a third limiting assembly are provided on the third air guide surface, and a third air guide channel is provided on the third air guide part, and the third air guide channel is connected to the third ventilation gap.

[0017] Furthermore, the box body has a first fixing plate and a second fixing plate arranged relatively to each other in the gravity direction, the battery pack is fixed between the first fixing plate and the second fixing plate, and two of the second air guide plates have heat dissipation gaps between the first fixing plate and the second fixing plate respectively, and the heat dissipation gaps are connected to the third ventilation gaps.

[0018] Furthermore, the energy storage device also includes a support member, which is arranged in the heat dissipation gap, and the second air guide plate is fixedly connected to the box body through the support member.

[0019] Furthermore, the battery compartment also includes a support rod, which extends along the gravity direction, and the two ends of the support rod are respectively fixed to the first fixing plate and the second fixing plate. The support rod is arranged in the second ventilation gap and abuts against the adjacent battery pack.

[0020] Furthermore, the second air guide plate further includes a third limiting assembly, which is arranged at the edge of the third air guide surface and extends outward perpendicularly to the third air guide surface;

[0021] The first limiting component is arranged at the edge of the first wind guiding surface and extends outward perpendicularly to the first wind guiding surface;

[0022] The second limiting assembly is arranged at an edge of the second wind guiding surface and extends outward perpendicularly to the second wind guiding surface.

[0023] Furthermore, the energy storage module further includes a first connecting member and a second connecting member;

[0024] In the gravity direction, the first battery core and the second battery core that are adjacently arranged are connected via the first connecting member;

[0025] In the second direction, the battery packs adjacent to each other are connected via the second connector.

[0026] In order to solve the above technical problems, the embodiment of the present application further provides a power generation system, which adopts the following technical solution:

[0027] A power generation system comprises the battery pack as described above or the energy storage device as described above.

[0028] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0029] (1) The battery pack structure of the present application has a first air guide plate disposed between the stacked battery cells. The air guide portion on the first air guide plate and the battery cells form an air guide channel. The cold air in the air guide channel directly contacts the surface of the battery cells and takes away the heat, which can effectively improve the heat dissipation of the battery cells located inside the battery pack. The first air guide portion and the second air guide portion are also disposed on the first air guide plate, which can ventilate and dissipate heat for two adjacent battery cells at the same time, and has high heat dissipation efficiency.

[0030] (2) The first air guide plate can be stacked with the battery core without assembly before use, which can simplify the assembly process of the first air guide plate.

[0031] (3) The first limiting assembly and the second limiting assembly can limit the two battery cells at the same time. When assembling the battery pack, there is no need to set other limiting structures to position and fix the battery cells. In addition, the first air guide portion and the second air guide portion are symmetrically arranged, and the first limiting assembly and the second limiting assembly are symmetrically arranged. When assembling the battery pack, there is no need to distinguish between the front and back sides of the first air guide plate, which can effectively improve the assembly efficiency of the battery pack.

[0032] (4) The energy storage device of the present application is provided with a first ventilation gap, a second ventilation gap, a third ventilation gap and an airflow driving member which are interconnected. The airflow driving member is used to accelerate the air flow in the first ventilation gap, the second ventilation gap and the third ventilation gap, and can effectively ventilate and dissipate heat on the outer side surface of the energy storage module, the adjacent sides between the battery packs and the sides of the battery cells stacked in the battery pack at the same time. That is, the energy storage device of the present application can dissipate heat on the six sides of the battery cell monomer, which can greatly improve the heat dissipation effect of the battery cell, improve the heat dissipation uniformity of the battery cell, and prevent excessive temperature differences between the single battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the solutions in the present application or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 is an exploded schematic diagram of a battery pack provided by an embodiment of the utility model;

[0035] Figure 2 It is a schematic diagram of the three-dimensional structure of a battery pack provided by an embodiment of the utility model;

[0036] Figure 3 It is a schematic diagram of the three-dimensional structure of the first air guide plate provided in an embodiment of the utility model;

[0037] Figure 4 It is a schematic diagram of the three-dimensional structure of the second air guide plate provided in an embodiment of the utility model;

[0038] Figure 5 It is a schematic diagram of the internal structure of the battery compartment and the air conditioning compartment provided by the embodiment of the utility model;

[0039] Figure 6 is a schematic diagram of the internal structure of the battery compartment and the air conditioning compartment provided by the embodiment of the utility model from another angle;

[0040] Figure 7 It is a schematic diagram of the three-dimensional structure of the support rod and the battery pack provided by the embodiment of the utility model;

[0041] Figure 8 It is a schematic diagram of the three-dimensional structure of the energy storage device provided by the embodiment of the utility model;

[0042] Fig. 9 The utility model embodiment provides Figure 3 The enlarged view of point A in the middle;

[0043] Fig.10 The utility model embodiment provides Figure 5 Enlarged view of point B in the middle.

[0044] Reference numerals:

[0045] 100. Energy storage device; 10. Battery pack; 1. First battery cell; 2. Second battery cell;

[0046] 3. first air guide plate; 31. first air guide surface; 32. first flow divider; 33. first support member; 331. first ventilation slot; 34. first position-limiting assembly; 341. first position-limiting member; 342. second position-limiting member; 343. third position-limiting member; 344. fourth position-limiting member;

[0047] 35. Second air guide surface; 36. Second flow divider; 37. Second support member; 371. Second ventilation slot; 38. Second limit assembly; 381. Fifth limit member; 382. Seventh limit member; 383. Eighth limit member; 4. Second air guide plate; 41. Third air guide surface; 42. Third flow divider; 43. Third support member; 431. Third ventilation slot; 44. Third limit assembly; 441. Ninth limit member; 442. Tenth limit member; 443. Eleventh limit member; 444. Twelfth limit member; 5. Battery compartment; 51. First fixing plate; 52. Second fixing plate; 53. Third fixing plate; 54. Air flow driving member; 55. Heat dissipation gap; 56. Support member; 57. Support rod; 6. First connecting member; 7. Second connecting member; 8. Third connecting member; 9. Air conditioning compartment. DETAILED DESCRIPTION

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0049] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0051] Combine the following Figures 1 to 10 , describing an embodiment of the utility model.

[0052] Please refer to Figure 1 to Figure 3 As shown, the battery pack 10 of the present application includes a battery core group and a first air guide plate 3. The battery core group includes at least a first battery core 1 and a second battery core 2 arranged adjacent to each other. The first battery core 1 and the second battery core 2 are stacked along the gravity direction, and a first ventilation gap is formed between the first battery core 1 and the second battery core 2. The number and type of the first battery core 1 and the second battery core 2 are not limited. The first battery core 1 and the second battery core 2 can be battery cores of the same type or different types.

[0053] Furthermore, the first air guide plate 3 is arranged in the first ventilation gap, and the first air guide plate 3 has a first air guide surface 31 and a second air guide surface 35 which are opposite to each other, the first air guide surface 31 is provided with a first air guide portion and a first limiting assembly 34 facing the first battery core 1, and the second air guide surface 35 is provided with a second air guide portion and a second limiting assembly 38 facing the second battery core 2, the first air guide portion and the second air guide portion are symmetrically arranged, and the first limiting assembly 34 and the second limiting assembly 38 are symmetrically arranged; the first battery core 1 and the first air guide portion cooperate to form a first air guide channel, and the second battery core 2 and the second air guide portion cooperate to form a second air guide channel. In this embodiment, the cooling wind in the first air guide channel and the second air guide channel can directly contact the surface of the battery core and take away the heat, with high heat conduction efficiency and good heat dissipation effect; the two air guide surfaces of the first air guide plate 3 that are away from each other are provided with air guide parts and limit parts, and the first air guide plate 3 does not need to be assembled with other components to simultaneously ventilate and dissipate heat for the upper and lower battery cores and fix their positions, which can simplify the assembly process of the battery pack 10 and improve production efficiency; the first air guide part and the second air guide part are symmetrically arranged, the first limit assembly 34 and the second limit assembly 38 are symmetrically arranged, and the first air guide plate 3 does not need to distinguish between the front and back sides, which is convenient for assembly.

[0054] In this embodiment, the material of the first air guide plate 3 is not limited. The first air guide plate 3 can be made of plastic, aluminum alloy or other materials. Preferably, the air guide plate is made of lightweight, high-strength, and high-thermal-conductivity aluminum alloy material.

[0055] In this embodiment, the shape and area size of the first air guide plate 3 are not limited. The shape and area size of the first air guide plate 3 can be flexibly set according to the shape and area size of the battery core. Preferably, the first air guide plate 3 and the battery core are both square structures, and the area of ​​the first air guide plate 3 is approximately the same as the area of ​​the battery core.

[0056] In this embodiment, the first limiting assembly 34 is perpendicular to the first air guide surface 31 and extends in a direction close to the first battery core 1, and the second limiting assembly 38 is perpendicular to the second air guide surface 35 and extends in a direction close to the second battery core 2. The first limiting assembly 34 includes a first limiting member 341, a second limiting member 342, a third limiting member 343 and a fourth limiting member 344. The first limiting member 341 and the second limiting member 342 are arranged opposite to each other in the first horizontal direction, and the third limiting member 343 and the fourth limiting member 344 are arranged opposite to each other in the second horizontal direction. The first horizontal direction is perpendicular to the second horizontal direction. The first air guide surface 31, the first limiting member 341, the second limiting member 342, the third limiting member 343 and the fourth limiting member 344 enclose a limiting space for accommodating the first battery core 1. The second limiting assembly 38 includes a fifth limiting member 381, a sixth limiting member (not shown in the figure), a seventh limiting member 382 and an eighth limiting member 383. The fifth limiting member 381 and the sixth limiting member are arranged opposite to each other in the first horizontal direction, and the seventh limiting member 382 and the eighth limiting member 383 are arranged opposite to each other in the second horizontal direction. The first horizontal direction is perpendicular to the second horizontal direction. The second air guide surface 35, the fifth limiting member 381, the sixth limiting member, the seventh limiting member 382 and the eighth limiting member 383 are arranged to form a limiting space for accommodating the second battery core 2. The first limiting assembly 34 and the second limiting assembly 38 respectively form limiting spaces for fixing the battery core on the first air guide surface 31 and the second air guide surface 35. When fixing the battery core, the battery core is directly placed in the corresponding limiting space. The first limiting assembly 34 and the second limiting assembly 38 can prevent the battery core from slipping in the horizontal direction. The installation and fixing of the battery core is simple and firm.

[0057] In one embodiment, Figure 3 and Fig. 9 As shown, the first air guide portion includes a first diverter 32 and at least two first support members 33 arranged at intervals. The first diverter 32 and the first support members 33 are arranged on the first air guide surface 31. The first support member 33 is in close contact with the first battery core 1. The first air guide channel is located between the first support members 33 arranged at intervals. The first diverter members 32 are distributed at intervals in the first air guide channel. The first support member 33 is provided with a first ventilation groove 331 facing the first battery core 1.

[0058] In this embodiment, the first flow divider 32 and the first support member 33 both extend in the direction close to the first battery core 1. There are at least two first support members 33, and the first support members 33 are arranged at intervals. The first support members 33 directly abut against the first battery core 1 for fixing and supporting the first battery core 1. A first air guide channel for cooling air flow is formed between adjacent first support members 33. The position of the first support member 33 is not limited, and can be flexibly set according to the stress applied by the battery core to the first air guide plate 3. The first support member 33 is set at a position where the first air guide plate 3 is subjected to greater force.

[0059] Furthermore, a first flow diverter 32 is also provided in the first air guide channel. The number and shape of the first flow diverter 32 are not limited. The number of the first flow diverter 32 can be one or more. The first flow diverter 32 can be a strip structure, a plate structure or other structures. Preferably, the number of the first flow diverter 32 is multiple, and multiple first flow diverters 32 are distributed in the first air guide channel at intervals, and the first flow diverter 32 abuts against the first battery core 1. On the one hand, the first flow diverter 32 can support the first battery core 1 and improve the uniformity of the force of the first battery core 1. On the other hand, the first flow diverter 32 plays a role of diversion. The first flow diverter 32 can adjust the flow of cold air flowing through the first battery core 1 according to the heat generated by different parts of the first battery core 1, thereby improving the uniformity of heat dissipation of the first battery core 1.

[0060] In this embodiment, a first ventilation slot 331 is provided on the first support member 33 , and the first ventilation slot 331 can improve the ventilation and heat dissipation capability of the first air guide plate 3 .

[0061] In this example, the structure of the second air guide portion is the same as that of the first air guide portion. The second air guide portion includes a second diverter 36 and at least two second support members 37 spaced apart. The second diverter 36 and the second support members 37 are arranged on the second air guide surface 35. The second support members 37 are in close contact with the second battery core 2. The second air guide channel is located between the spaced apart second support members 37. The second diverter members 36 are spaced apart in the second air guide channel. The second support members 37 are provided with second ventilation grooves 371 facing the second battery core 2.

[0062] Further, the first stopper 341 and the second stopper 342 are arranged at the edge of the first wind guide surface 31 in a first horizontal direction, and the third stopper 343 and the fourth stopper 344 are arranged at the edge of the first wind guide surface 31 in a second horizontal direction. The specific positions of the first stopper 341, the second stopper 342, the third stopper 343, and the fourth stopper 344 are not limited. The first stopper 341, the second stopper 342, the third stopper 343, and the fourth stopper 344 can be arranged on the first flow divider 32, the first support member 33, or the first wind guide surface 31. The first stopper 341 and / or the second stopper 342 can be fixed to the first wind guide plate 3 by buckles, bolts, or other fasteners. Preferably, the first limiting member 341 is a limiting protrusion arranged at the upper end of the first diverter member 32, and the second limiting member 342 is a bolt arranged on the first air guide surface 31. When installing the first battery cell 1, the bolt is first removed to release the blocking effect of the bolt on the first battery cell, and the first battery cell 1 is pushed so that the first battery cell 1 moves along the first horizontal direction. After passing the bolt, the first battery cell continues to move to the limiting protrusion, and then the bolt is reinstalled on the first air guide plate 3 to fix the first battery cell 1. The installation of the first battery cell 1 is labor-saving and convenient.

[0063] According to the embodiments of the present utility model, Figures 5 to 8 As shown, there is also provided an energy storage device 100, comprising a battery compartment 5 and an energy storage module, wherein the energy storage module comprises the battery pack 10 as described above;

[0064] The number of the battery packs 10 is at least two. The battery packs 10 are spaced apart in the horizontal direction. A second ventilation gap is provided between adjacent battery packs 10 , and the second ventilation gap facilitates ventilation and heat dissipation of the sides between the battery packs 10 .

[0065] Furthermore, the battery compartment 5 includes a box body, on which an airflow driving member 54 is provided, the energy storage module is fixed in the box body, and a third ventilation gap is provided between the outer wall surface of the energy storage module and the inner wall surface of the box body, and the third ventilation gap facilitates ventilation and heat dissipation of the outer wall surface of the energy storage module.

[0066] In this example, the first ventilation gap, the second ventilation gap, the third ventilation gap and the airflow driving member 54 are connected. The airflow driving member 54 is used to accelerate the air flow in the first ventilation gap, the second ventilation gap and the third ventilation gap. The cold air can contact and exchange heat with each surface of the battery core, greatly improving the heat dissipation effect of the battery core, improving the heat dissipation uniformity of the battery core, and preventing excessive temperature differences between single battery cells.

[0067] In one embodiment, Figure 4 and Figure 5As shown, the battery pack 10 further includes two second air guide plates 4, which are fixed at both ends of the battery pack 10 along the gravity direction, and a third air guide surface 41 is provided on the side of the second air guide plate 4 facing the first air guide plate 3, and a third air guide portion and a third limiting assembly 44 are provided on the third air guide surface 41, and a third air guide channel is provided on the third air guide portion, and the third air guide channel is connected to the third ventilation gap. The second air guide plates 4 can fix the battery cells at both ends of the battery pack 10, and dissipate heat from the surfaces of the battery cells at both ends through the third air guide portion.

[0068] In one embodiment, Figure 4 As shown, the third air guide portion includes a third diverter 42 and at least two third support members 43 arranged at intervals. The third diverter 42 and the third support member 43 are arranged on the third air guide surface 41. The third support member 43 is in close contact with the battery core. The third air guide channel is located between the third support members 43 arranged at intervals. The third support member 43 is provided with a third ventilation slot 431. The third diverter 42 is distributed in the third air guide channel at intervals. The third limiting component 44 is perpendicular to the third air guide surface 41 and extends in the direction close to the first air guide plate 3. The third limiting component 44 includes a ninth limiting member 441, a tenth limiting member 442, an eleventh limiting member 443 and a twelfth limiting member 444, the ninth limiting member 441 and the tenth limiting member 442 are relatively arranged in a first horizontal direction, the eleventh limiting member 443 and the twelfth limiting member 444 are relatively arranged in a second horizontal direction, the first horizontal direction is perpendicular to the second horizontal direction, and the third wind guide surface 41, the ninth limiting member 441, the tenth limiting member 442, the eleventh limiting member 443 and the twelfth limiting member 444 enclose a limiting space for accommodating a battery cell.

[0069] In one embodiment, Figure 5 , Figure 6 and Fig.10 As shown, the box body has a first fixing plate 51 and a second fixing plate 52 arranged opposite to each other in the direction of gravity, the battery pack 10 is fixed between the first fixing plate 51 and the second fixing plate 52, and a heat dissipation gap 55 is left between the second air guide plates 4 at both ends of the battery pack 10 and the first fixing plate 51 and the second fixing plate 52, respectively, and the heat dissipation gap 55 is connected to the third ventilation gap. In this embodiment, the second air guide plates 4 at both ends of the battery pack 10 have a heat dissipation gap 55 between the first fixing plate 51 and the second fixing plate 52, respectively, so that cold air can dissipate heat from the second air guide plates 4, thereby improving the heat dissipation effect on the battery core.

[0070] In one embodiment, Figure 5 and Figure 6As shown, the energy storage device 100 further includes a support member 56, which is disposed in the heat dissipation gap 55, and the second air guide plate 4 is fixedly connected to the box body through the support member 56. The support member 56 is used to connect the second air guide plate 4 and the box body, and the support member 56 and the first fixing plate 51 and the second fixing plate 52 limit and fix the battery pack 10 in the gravity direction; in addition, the support member 56 allows the second air guide plates 4 at both ends of the battery pack 10 to have heat dissipation gaps 55 respectively between the first fixing plate 51 and the second fixing plate 52.

[0071] In one embodiment, Figure 6 and Figure 7 As shown, the battery compartment 5 further includes a support rod 57, which extends in the direction of gravity, and the two ends of the support rod 57 are respectively fixed to the first fixing plate 51 and the second fixing plate 52, and the support rod 57 is arranged in the second ventilation gap, and the support rod 57 is respectively in contact with the adjacent battery packs 10. On the one hand, the support rod 57 can support the first fixing plate 51 and the second fixing plate 52, thereby improving the strength of the box body of the battery compartment 5; on the other hand, the support rod 57 can position and limit the battery packs 10, thereby ensuring that the second ventilation gap is left between adjacent battery packs 10.

[0072] In this embodiment, the support rod 57 is made of high-strength aluminum alloy, and both ends of the support rod 57 are fixedly connected to the first fixing plate 51 and the second fixing plate 52 by welding, screw connection or other connection methods.

[0073] In one embodiment, Figure 6 As shown, the energy storage module further includes a first connector 6 and a second connector 7; in the gravity direction, the adjacent first battery core 1 and the second battery core 2 are connected by the first connector 6; in the second direction, the adjacent battery cores are connected by the second connector 7. The first connector 6 and the second connector 7 make the connection between the battery cores more secure.

[0074] In one embodiment, Figure 6 As shown, the box body of the battery compartment 5 is surrounded by a first fixing plate 51, a second fixing plate 52, a third fixing plate 53, a fourth fixing plate (not shown in the figure), a fifth fixing plate (not shown in the figure) and a sixth fixing plate (not shown in the figure), wherein the first fixing plate 51 and the second fixing plate 52 are respectively arranged on the upper side and the lower side of the box body, the third fixing plate 53 and the fourth fixing plate are respectively arranged on the left side and the right side of the box body, and the fifth fixing plate and the sixth fixing plate are respectively arranged on the front side and the rear side of the box body. The battery compartment 5 also includes a third connecting member 8, and the battery pack 10 is connected to the box body through the third connecting member 8.

[0075] In one embodiment, Figure 5 and Figure 6As shown, the energy storage device 100 also includes an air conditioning cabin 9, which is arranged at both ends of the battery cabin 5 along the gravity direction. A temperature control component (not shown in the figure) is arranged in the air conditioning cabin 9, and the temperature control component is used to control the temperature of the battery core in the battery cabin 5 to maintain the temperature balance inside the battery cabin 5. The temperature control component cooperates with the air flow driving component to effectively ensure the heat dissipation effect of the battery core.

[0076] According to an embodiment of the present invention, there is also provided a power generation system, comprising the battery pack 10 as described above or the energy storage device 100 as described above.

[0077] In the present embodiment, the battery pack of the power generation equipment is provided with a first air guide plate between the stacked battery cells. The air guide portion on the first air guide plate and the battery cells form an air guide channel. The cold air in the air guide channel directly contacts the surface of the battery cells and takes away the heat. This can effectively improve the heat dissipation on the surface of the battery cells inside the battery pack, reduce the temperature difference between the single battery cells, improve the consistency and performance of the battery pack, and thus improve the power generation effect of the power generation equipment.

[0078] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A battery pack (10), characterized in that: include: A battery core group and a first air guide plate (3); The battery core group comprises at least a first battery core (1) and a second battery core (2) which are arranged adjacent to each other, the first battery core (1) and the second battery core (2) are stacked along the gravity direction, and a first ventilation gap is formed between the first battery core (1) and the second battery core (2); The first air guide plate (3) is arranged in the first ventilation gap, the first air guide plate (3) has a first air guide surface (31) and a second air guide surface (35) which are separated from each other, the first air guide surface (31) is provided with a first air guide portion and a first limit assembly facing the first battery core (1), the second air guide surface (35) is provided with a second air guide portion and a second limit assembly facing the second battery core (2), the first air guide portion and the second air guide portion are symmetrically arranged, and the first limit assembly and the second limit assembly are symmetrically arranged; the first battery core (1) and the first air guide portion cooperate to form a first air guide channel, and the second battery core (2) and the second air guide portion cooperate to form a second air guide channel; The first limiting component (34) comprises a first limiting member (341), a second limiting member (342), a third limiting member (343) and a fourth limiting member (344); the first limiting member (341) and the second limiting member (342) are arranged relative to each other in a first horizontal direction; the third limiting member (343) and the fourth limiting member (344) are arranged relative to each other in a second horizontal direction; the first horizontal direction is perpendicular to the second horizontal direction; the first wind guide surface (31), the first limiting member (341), the second limiting member (342), the third limiting member (343) and the fourth limiting member (344) enclose a limiting space for accommodating the first battery core (1).

2. The battery pack (10) according to claim 1, characterized in that: The first air guide portion comprises a first flow divider (32) and at least two first support members (33) arranged at intervals, the first flow divider (32) and the first support member (33) respectively abut against the first battery core (1), the first air guide channel is located between the first support members (33) arranged at intervals, the first flow divider (32) is distributed at intervals in the first air guide channel, and the first support member (33) is provided with a first ventilation slot (331) facing the first battery core (1); The first limiting member (341) and the second limiting member (342) are arranged at the edge of the first wind guide surface (31) opposite to each other along the first horizontal direction, and the third limiting member (343) and the fourth limiting member (344) are arranged at the edge of the first wind guide surface (31) opposite to each other along the second horizontal direction. The first limiting member (341) and / or the second limiting member (342) are detachably connected to the first wind guide plate (3).

3. An energy storage device (100), characterized in that: The battery compartment (5) comprises a box, an airflow driving member (54) and an energy storage module, the energy storage module is fixed in the box, the airflow driving member (54) is arranged on the box, and the energy storage module comprises at least two battery packs (10) according to claim 1 or 2; The battery packs (10) are arranged at intervals along a second direction, the second direction is perpendicular to the gravity direction, and second ventilation gaps are provided between adjacent battery packs (10); A third ventilation gap is provided between the outer wall surface of the energy storage module and the box body, and the first ventilation gap, the second ventilation gap, the third ventilation gap and the air outlet of the airflow driving member (54) are interconnected.

4. The energy storage device (100) according to claim 3, characterized in that: The battery pack (10) further comprises two second air guide plates (4), the two second air guide plates (4) being fixed at two ends of the battery pack (10) along the gravity direction, the second air guide plate (4) being provided with a third air guide surface (41) on one side facing the first air guide plate (3), the third air guide surface (41) being provided with a third air guide portion and a third limit assembly (44), the third air guide portion being provided with a third air guide channel, and the third air guide channel being connected to the third ventilation gap.

5. The energy storage device (100) according to claim 4, characterized in that: The box body has a first fixing plate (51) and a second fixing plate (52) arranged opposite to each other in the gravity direction, the battery pack (10) is fixed between the first fixing plate (51) and the second fixing plate (52), and two second air guide plates (4) have heat dissipation gaps (55) respectively between the first fixing plate (51) and the second fixing plate (52), and the heat dissipation gaps (55) are connected to the third ventilation gaps.

6. The energy storage device (100) according to claim 5, characterized in that: The energy storage device (100) further comprises a support member (56), wherein the support member (56) is arranged in the heat dissipation gap (55), and the second air guide plate (4) is fixedly connected to the box body via the support member (56).

7. The energy storage device (100) according to claim 5 or 6, characterized in that: The battery compartment (5) further comprises a support rod (57), wherein the support rod (57) extends along the gravity direction, and the two ends of the support rod (57) are respectively fixed to the first fixing plate (51) and the second fixing plate (52), and the support rod (57) is arranged in the second ventilation gap and abuts against the adjacent battery pack (10).

8. The energy storage device (100) according to claim 7, characterized in that: The second wind guide plate (4) further comprises a third limiting component (44), wherein the third limiting component (44) is arranged at the edge of the third wind guide surface (41) and extends outward perpendicularly to the third wind guide surface (41); The first limiting component is arranged at the edge of the first wind guiding surface (31) and extends outward perpendicularly to the first wind guiding surface (31); The second limiting assembly is arranged at the edge of the second wind guiding surface (35), and extends outwardly perpendicularly to the second wind guiding surface (35).

9. The energy storage device (100) according to claim 8, characterized in that: The energy storage module further comprises a first connecting member (6) and a second connecting member (7); In the gravity direction, the first battery core (1) and the second battery core (2) arranged adjacent to each other are connected via the first connecting member (6); In the second direction, the battery packs (10) arranged adjacent to each other are connected via the second connecting member (7).

10. A power generation system, characterized in that: A battery pack (10) comprising the battery pack (10) according to claim 1 or 2, or an energy storage device (100) according to any one of claims 3 to 9.

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