Battery, power utilization device and energy storage device

Abstract

The utility model discloses a battery, a power utilization device and an energy storage device, the battery comprises at least one battery monomer, and a first surface of one side of each battery monomer in a first direction is provided with a pole; the accommodating box is internally provided with an accommodating cavity, and each battery monomer is accommodated in the accommodating cavity; the heat exchange assembly is arranged on the first surfaces of the battery monomers and is used for exchanging heat with the battery monomers, and the projection of the pole in the first surface along the first direction and the projection of the heat exchange assembly in the first surface along the first direction are not overlapped with each other. According to the embodiment of the invention, the battery, the pole and the heat exchange assembly share the horizontal space between the first surface and the wall surface of the accommodating box, so that the space utilization rate in the accommodating cavity is improved, the size of the battery is reduced, and the energy density of the battery is improved. According to the power utilization device and the energy storage device, due to the fact that the battery is adopted, the space reserved for the battery can be reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to batteries, electrical devices and energy storage devices. Background Art

[0002] With the promotion and popularization of the concept of green development, new energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in the field of energy storage.

[0003] When the battery is working, it continuously releases heat, which increases the temperature inside the battery. High temperature not only affects the working efficiency of the battery, but also creates safety hazards. Therefore, in addition to the battery cells, the battery is also equipped with a heat exchange component to keep the battery working at an appropriate temperature.

[0004] How to integrate heat exchange components into batteries is one of the issues that the industry is concerned about. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a battery, an electrical device and an energy storage device, so that the heat exchange component and the pole share the horizontal space to improve the space utilization.

[0006] In a first aspect, the present application provides a battery, comprising: at least one battery cell, each of the battery cells having a pole on a first surface on one side in a first direction; a containing box, wherein a containing cavity is provided in the containing box, and each of the battery cells is contained in the containing cavity; a heat exchange component, disposed on the first surface of the battery cell, for exchanging heat with each of the battery cells, wherein a projection of the pole on the first surface along the first direction and a projection of the heat exchange component on the first surface along the first direction do not overlap with each other.

[0007] In the battery in the embodiment of the present application, since the pole and the heat exchange assembly are both arranged on the first surface, and the projection of the pole along the first direction and the projection of the heat exchange assembly along the first direction do not overlap each other, the pole and the heat exchange assembly share the horizontal space between the first surface and the wall of the storage box, thereby improving the space utilization rate in the storage cavity, which not only helps to reduce the size of the battery, but also helps to improve the energy density of the battery. Since the battery cell and the heat exchange assembly are accommodated in the storage cavity of the storage box, the storage box can protect the battery cell and the heat exchange assembly. Since the heat exchange assembly is arranged on the first surface of the battery cell, the heat exchange assembly can exchange heat with the battery cell.

[0008] In some embodiments, the first surface has a first area and a second area, the pole is disposed in the first area, and the heat exchange component is disposed in the second area.

[0009] Thus, the poles are concentrated in the first area, the heat exchange components are concentrated in the second area, and the poles arranged in the first area and the heat exchange components arranged in the second area do not interfere with each other.

[0010] In some embodiments, the number of the second regions is two, and the two second regions are located on both sides of the first region respectively.

[0011] Since the first area is located in the middle and the two second areas are located on both sides, the poles are concentrated in the first area located in the middle of the first surface, and two heat exchange components can be respectively arranged in the space on both sides of the poles. The poles and the heat exchange components make full use of the space of the accommodation cavity on the first surface. The arrangement is compact and reasonable, which improves the space utilization rate in the accommodation cavity, not only helps to reduce the size of the battery, but also helps to improve the energy density of the battery.

[0012] In some embodiments, the number of the first regions is two, and the second region is located between the two first regions.

[0013] Since the second area is located in the middle and the two first areas are located on both sides, a heat exchange component is set in the middle of the first surface, and the space on both sides of the heat exchange component is used to set the poles, and the poles and the heat exchange component fully utilize the space of the accommodation cavity on the first surface. The layout is compact and reasonable, which improves the space utilization rate in the accommodation cavity, not only helps to reduce the size of the battery, but also helps to improve the energy density of the battery.

[0014] In some embodiments, the area of ​​the second region is greater than the area of ​​the first region.

[0015] As a result, the poles are concentrated in the smaller first area, leaving a larger area for the heat exchange component, and the contact area between the heat exchange component and the battery cell is larger, so that the heat exchange component can meet the heat exchange requirements of the battery cell.

[0016] In some embodiments, the plurality of battery cells are arranged at least along a second direction, the second direction is consistent with a width direction of the first surface, and the heat exchange assembly at least partially covers the second region of each of the battery cells.

[0017] Since the plurality of battery cells are arranged along the second direction, the first area and the second area can both extend along the second direction to form a relatively regular area for setting the pole and the heat exchange assembly. Since the heat exchange assembly at least partially covers the second area of ​​each battery cell, the heat exchange assembly is in contact with each battery cell, so that the heat exchange assembly can perform heat exchange on each battery cell.

[0018] In some embodiments, the heat exchange assembly includes: a heat exchange plate; and an adhesive layer, including a first adhesive layer provided on a surface of the heat exchange plate close to the battery cell, and the heat exchange plate is bonded to the battery cell through the first adhesive layer.

[0019] Since the heat exchange plate is bonded to the surface of the battery cell through the first bonding layer, the heat exchange plate and the battery cell are in close contact, which helps to improve the heat exchange effect of the heat exchange plate on the battery cell. In addition, since the heat exchange plate and the battery cell are bonded to form an integral body, the structural strength of the battery cell is improved.

[0020] In some embodiments, the heat exchange assembly includes: a heat exchange plate; and an adhesive layer, the adhesive layer including a second adhesive layer provided on a surface of the heat exchange plate away from the battery cell, the heat exchange plate being bonded to the containing box via the second adhesive layer.

[0021] Since the heat exchange plate is bonded to the inner wall surface of the storage box through the second adhesive layer, the heat exchange plate is firmly fixed in the storage cavity. The heat exchange plate and the storage box are bonded as one, which helps to improve the structural strength of the storage box. In the case where adhesive layers are provided on both sides of the heat exchange plate, since the battery cell and the storage box are bonded on both sides of the heat exchange plate respectively, the battery cell is firmly fixed in the storage cavity.

[0022] In some embodiments, the heat exchange plate is configured to be in a flat plate shape, or the heat exchange plate is configured to be in an undulating shape along the first direction.

[0023] By forming the heat exchange plate into a flat plate, the heat exchange plate can be closely attached to the surface of the battery cell, thereby improving the heat exchange effect. The flat plate heat exchange plate has a simple structure and is easy to manufacture. By forming the heat exchange plate into a shape that undulates along the first direction, the heat exchange plate can be compressed by the force in the first direction. When the distance between the surface of the battery cell and the inner wall of the container is small due to production tolerance, the undulating heat exchange plate can deform to adapt to the smaller distance, thereby reducing the influence of production tolerance.

[0024] In some embodiments, the heat exchange plate is configured to be compressible along the first direction.

[0025] As a result, the heat exchange plate can be adapted to smaller gaps in the first direction, so that the heat exchange plate can not only continuously fit the battery cells and maintain a high heat exchange efficiency, but also reduce the impact of production tolerances.

[0026] In some embodiments, the heat exchange assembly located in the second region is in contact with the first surface of the battery and an inner wall surface of the containing box, respectively.

[0027] Since the heat exchange assembly is in contact with the first surface and the inner wall of the container respectively, the heat exchange assembly fully occupies the space of the accommodating cavity on the first surface, meeting the installation space required for the heat exchange assembly. The heat exchange assembly is limited between the first surface and the inner wall of the container, and the heat exchange assembly fits the first surface, so that the heat exchange efficiency between the heat exchange assembly and the battery cell is relatively high.

[0028] In some embodiments, in the accommodating cavity, the battery cell is a long blade battery cell, and a plurality of the long blade battery cells are arranged along a second direction to form a battery cell group, the second direction is consistent with the width direction of the first surface, and in the battery cell group, the poles are arranged along the second direction, and the heat exchange assembly extends along the second direction.

[0029] By arranging the long blade battery cells along the second direction, the poles are arranged in a straight line along the second direction, so that the accommodating cavity on the side of the pole has a larger and more complete space, which meets the space requirements for the installation of the heat exchange component. By arranging the heat exchange component in this space, the pole and the heat exchange component can make full use of the accommodating cavity space on the first surface. Since the long blade battery cells are arranged along the second direction and the heat exchange component extends along the second direction, the heat exchange component can cover multiple long blade battery cells to perform heat exchange on the long blade battery cells.

[0030] In some embodiments, in the accommodating cavity, the battery cell is a short knife battery cell, and a plurality of battery cell units are arranged along a second direction to form a battery cell group, and the battery cell unit includes two or more short knife battery cells arranged in parallel along a third direction, the second direction is consistent with the width direction of the first surface, the third direction is consistent with the length direction of the first surface, and two adjacent short knife battery cells along the third direction are arranged in parallel with the poles close to each other or with the poles far away from each other, and in the battery cell group, the poles are arranged along the second direction, and the heat exchange assembly extends along the second direction.

[0031] Since the plurality of battery cells are arranged along the second direction, and the adjacent short-blade battery cells along the third direction are arranged in parallel with the poles close to or far from each other, the accommodation cavity on the first surface of the short-blade battery cell has a larger and more complete space, which can meet the space requirements for the installation of the heat exchange component. Since the heat exchange component extends along the second direction, the heat exchange component can cover the plurality of short-blade battery cells to perform heat exchange on the short-blade battery cells.

[0032] In some embodiments, the receiving box forms a receiving portion on a side facing the battery cell, and the pole is at least partially received in the receiving portion.

[0033] By providing a receiving portion on the receiving box, on the one hand, it is helpful to adapt the shape of the space inside the receiving box to the contour shape formed by the pole, which is helpful to reduce the requirements for the arrangement of the pole; on the other hand, it is helpful to reduce the overall size and volume of the receiving box, improve the space utilization rate inside the receiving box, reduce the overall volume of the battery, and help to improve the energy density of the battery.

[0034] In some embodiments, a busbar is disposed in the first region, the busbar is used to connect the poles of adjacent battery cells, and the busbar is at least partially accommodated in the accommodation portion.

[0035] This helps to make the spatial shape inside the storage box better adapt to the arrangement relationship between the busbar and the battery cell, so that the shape of the storage cavity can adapt to the shape of the battery cell, which helps to reduce the gap between the inner wall of the storage box and the battery cell and improve the space utilization of the battery.

[0036] In some embodiments, the battery further includes: an electrical kit, the electrical kit is at least partially disposed in the first area, and the electrical kit located in the first area is at least partially accommodated in the accommodation portion.

[0037] Thus, the pole, the current collector and at least part of the electrical kit are integrated in the first area, and a receiving portion is provided on the receiving box corresponding to the first area, which can accommodate more parts protruding from the surface of the battery cell, thereby maximizing the use of the space in the receiving portion. This is beneficial to reducing the gap between the inner wall of the receiving cavity and the battery cell, and improving the space utilization of the battery.

[0038] In some embodiments, the electrical kit includes at least one of a sampling structure, a battery management system, a relay, and a high voltage power distribution unit.

[0039] Thus, at least one of the sampling structure, the battery management system, the relay and the high-voltage distribution unit can be accommodated in the accommodating portion, reducing the accommodating cavity space occupied by the original location thereof, which is beneficial to reducing the gap between the inner wall of the accommodating cavity and the battery cell, and improving the space utilization of the battery.

[0040] In some embodiments, the receiving box has a boss, which is formed by the receiving box bulging along the first direction toward the direction away from the battery cell, and the boss forms the receiving portion on the side facing the battery cell, and the pole and at least a portion of the electrical kit are located in the receiving portion and a gap is left between the inner wall at the boss.

[0041] Since the boss is formed by the accommodating box rising in the first direction away from the battery cell, the side of the boss facing the battery cell forms the accommodating part, so the space of the accommodating part can be increased by increasing the height of the boss within a certain range, and the boss can be set according to the size of the parts to be accommodated, so as to accommodate as many parts as possible in the accommodating part, thereby reducing the space occupied by the parts in the accommodating cavity. This is conducive to reducing the gap between the inner wall of the accommodating cavity and the battery cell, and improving the space utilization rate of the battery.

[0042] In some embodiments, the length direction of the boss is consistent with the second direction, the length of the boss along the second direction is greater than or equal to the length of the accommodating cavity along the second direction, and the second direction is consistent with the width direction of the first surface, or, the length direction of the boss is consistent with the third direction, the length of the boss along the third direction is greater than or equal to the length of the accommodating cavity along the third direction, and the third direction is consistent with the length direction of the first surface.

[0043] Since the length of the boss along the second direction is greater than or equal to the length of the accommodating cavity along the second direction, the projection of the boss along the first direction covers the range of all battery cells along the second direction, so that the poles of all battery cells can be accommodated in the boss. Since the length of the boss along the third direction is greater than or equal to the length of the accommodating cavity along the third direction, the boss has a larger accommodating portion, which can accommodate some poles and more electrical kits. This is conducive to reducing the space occupied by the electrical kit and other positions in the accommodating cavity, and improving the space utilization of the battery.

[0044] In some embodiments, a length of the boss along the second direction or the third direction is no greater than 500 mm.

[0045] Therefore, on the one hand, it is beneficial for the surface of the containing box to have a larger flat area so as to adapt to other components in the electrical device and reduce the adverse effect of the boss on the layout of other components in the electrical device; on the other hand, it reduces the adverse effect of the boss's reduced structural strength due to its large size and reduces the probability of damage to components in the containing part due to deformation of the boss.

[0046] In some embodiments, a length of the boss along the second direction or the third direction is in a range of 50 mm to 300 mm.

[0047] Thus, the space in the receiving portion can be sufficient to accommodate the protruding components on the battery cell, and the receiving box can maintain sufficient structural strength.

[0048] In some embodiments, a protrusion is provided in the first region of the battery cell, the pole is provided on a surface of the protrusion on one side facing the first direction, and at least a portion of the protrusion is located in the accommodation portion.

[0049] By arranging a protrusion in the first area of ​​the battery cell and arranging the pole on the protrusion, the pole is isolated from the second area, and the heat exchange component located in the second area does not interfere with the pole, thereby reducing the risk of electrical connection between the pole and the heat exchange component; the height of the pole in the first direction can be increased without reducing the strength of the pole, so as to provide a heat exchange component accommodating space with a suitable height as needed.

[0050] In some embodiments, the electrode column includes a positive electrode column and a negative electrode column, and the positive electrode column and the negative electrode column are arranged on the protrusion with an interval between them.

[0051] By arranging the positive electrode column and the negative electrode column at intervals on the protrusion, the positive electrode column and the negative electrode column are relatively independent and do not interfere with each other, thereby reducing the risk of short circuit between the two.

[0052] In some embodiments, the number of the protrusions is one, the positive electrode column and the negative electrode column are spaced apart from each other on the protrusions, a line connecting the positive electrode column and the negative electrode column is parallel to the length direction of the first surface, or a line connecting the positive electrode column and the negative electrode column is parallel to the width direction of the first surface.

[0053] Since the positive pole and the negative pole are arranged on the same protrusion, only one protrusion needs to be manufactured to provide a mounting position for the two poles, which is conducive to reducing the manufacturing steps of the first shell wall and reducing production costs. By arranging the positive pole and the negative pole in a manner that the line connecting the two poles is parallel to the length direction of the first surface, or arranging the positive pole and the negative pole in a manner that the line connecting the two poles is parallel to the width direction of the first surface, the arrangement is more regular and convenient for later maintenance. Moreover, since the protrusion area of ​​the two poles can be designed to be larger than the protrusion area of ​​the single pole, it helps to improve the strength of the pole setting part in the battery cell.

[0054] In some embodiments, at least two of the protrusions are spaced apart from each other, the positive electrode column is disposed on one of the protrusions, and the negative electrode column is disposed on the other of the protrusions.

[0055] Since at least two protrusions are provided, and the positive electrode column and the negative electrode column are respectively provided on different protrusions, on the one hand, it is beneficial to reduce the volume of a single protrusion, making the structure more compact, which is beneficial to reducing the volume of the battery; on the other hand, there is a large distance between the positive electrode column and the negative electrode column, so that the two can be relatively independent and do not interfere with each other, reducing the risk of short circuit between the two.

[0056] In some embodiments, the length direction of the first surface and the length direction of the protrusion are consistent with a third direction, and along the third direction, the length of the protrusion accounts for 10% to 30% of the length of the battery cell.

[0057] Along the third direction, since the ratio of the length of the protrusion to the length of the battery cell is greater than or equal to 10%, the positive pole and the negative pole are arranged on the same protrusion with a sufficient safety distance between them, reducing the risk of short circuit between the two. Along the third direction, since the ratio of the length of the protrusion to the length of the battery cell is less than or equal to 30%, no less than 70% of the length of the battery cell along the third direction can be reserved for the heat exchange component, providing sufficient installation space for the heat exchange component.

[0058] In some embodiments, along the third direction, the distance between the center point of the protrusion and the center point of the first surface is 0% of the length of the battery cell, or the distance between the center point of the protrusion and the center point of the first surface is in the range of 45% to 47.5% of the length of the battery cell.

[0059] Along the third direction, since the distance between the center point of the protrusion and the center point of the first surface is 0% of the length of the battery cell, sufficient space is left on both sides of the protrusion in the third direction for setting the heat exchange component. Along the third direction, since the distance between the center point of the protrusion and the center point of the first surface is in the range of 45% to 47.5% of the length of the battery cell, sufficient space is left on one side of the protrusion for setting the heat exchange component.

[0060] In some embodiments, along the first direction, the height of the pole provided on the protrusion from the first surface of the battery is greater than or equal to the height of the heat exchange component, and a gap is left between the protrusion, the pole, the electrical kit and the inner wall surface of the boss.

[0061] As a result, the projection, the pole and the electrical assembly are not squeezed by the inner wall surface of the boss when placed in the receiving portion.

[0062] In some embodiments, the containing box is provided with a through hole for opening the first area to the outside, and a detachable closing cover is provided at the through hole, and a projection of the through hole along the first direction overlaps with a projection of the first area along the first direction.

[0063] Since the storage box is provided with a through hole, the inside of the battery can be connected to the outside world, so the maintenance personnel can perform maintenance inside the battery through the through hole. By detachably installing the closing cover at the through hole, the closing cover can close the through hole when installed at the through hole, isolating the storage cavity from the outside world, so that the battery cell can work in a stable environment; when the closing cover is removed from the through hole, the inside of the battery is connected to the outside world through the through hole, so as to be used for maintenance of the inside of the battery. Since the projection of the through hole along the first direction has an overlapping part with the projection of the first area along the first direction, the maintenance personnel can directly inspect at least part of the pole through the through hole.

[0064] In some embodiments, a sealing member is disposed around the through hole, and the sealing member is used to seal between the through hole and the closing cover.

[0065] As a result, the closing cover and the through hole can maintain a relatively tight sealing effect, preventing external dust and liquid from entering the accommodating cavity and damaging the battery cell.

[0066] In some embodiments, the closing cover is configured as a flat plate, or the closing cover is configured as a protrusion relative to the surface of the containing box, the closing cover forms the containing portion on the side facing the battery cell, and at least a portion of the pole is located in the containing portion via the through hole.

[0067] By forming the closing cover in a flat plate shape, the structure is simple and the processing of the closing cover is convenient. Since the closing cover is formed in a convex shape relative to the surface of the storage box, and a storage portion is formed on the side of the closing cover facing the battery cell, at least a part of the pole is placed in the storage portion of the closing cover, thereby reducing the space occupied by the pole in the storage cavity, which helps to reduce the volume of the storage box.

[0068] In some embodiments, the through hole is opened on the wall surface of the boss facing the battery cell.

[0069] Thus, the receiving part of the closure cover and the receiving part of the boss overlap to form a larger space, which can accommodate more poles and even electrical kits, further reducing the space occupied by the part of the battery cell protruding from the surface. The through hole connects the receiving part of the boss with the outside world, and maintenance personnel can inspect the poles and other parts in the receiving part through the through hole.

[0070] In a second aspect, the present application further provides an electrical device, the electrical device comprising the battery as described above, the battery serving as a power source for the electrical device.

[0071] Since the electrical device includes a battery that fully utilizes the internal space of the storage box, the space reserved for the battery in the electrical device can be reduced, or the overall energy of the battery can be increased while maintaining the volume. This helps to increase the freedom of arrangement of the battery and its peripheral structures in the electrical device, and helps to improve the battery life / standby capability of the electrical device.

[0072] In some embodiments, a plurality of the battery cells are arranged along a second direction to form a battery cell queue, the second direction is consistent with the width direction of the first surface, the surface of the containing box is configured to have a boss extending along the second direction, the boss is formed by the surface of the containing box bulging along the first direction toward a direction away from the battery cell, the electrical device is a vehicle, the vehicle also includes at least one seat, the battery is located on one side of the seat along the up-down direction of the vehicle and the through hole of the battery faces the other side of the up-down direction of the vehicle, the up-down direction of the vehicle is consistent with the first direction, the first direction is perpendicular to the second direction, and the projection of the seat on the battery along the up-down direction of the vehicle is outside the range of the boss.

[0073] Since the surface of the storage box is provided with a boss, the boss can provide additional space to accommodate the components in the battery, which is helpful to reduce the space required for the battery, or to increase the overall energy of the battery while maintaining the volume, thereby helping to increase the vehicle's range. Since the projection of the seat on the battery along the up and down direction of the vehicle is outside the range of the boss, the seat and the boss make full use of the same horizontal space, improving the space utilization rate in the vehicle, and have little impact on each other. Since the battery is located on one side of the seat along the up and down direction of the vehicle, and the through hole of the battery faces the other side of the up and down direction of the vehicle, the battery can be inspected and repaired in the vehicle without removing the battery, saving time and effort.

[0074] In some embodiments, the vehicle includes at least one seat row, the seat row includes at least two seats arranged along the left-right direction of the vehicle, the left-right direction of the vehicle is the third direction, the third direction is perpendicular to both the first direction and the second direction, and along the left-right direction of the vehicle, the boss is located between adjacent seats in the same seat row, and / or the boss is located on both sides of the same seat row in the left-right direction of the vehicle.

[0075] As a result, the seat is not affected by the protrusion when it is adjusted forward and backward. In addition, the setting position of the protrusion is staggered with the user's use position, which reduces the interference of the protrusion on the user's normal activities in the car, improves the user experience, and improves the space utilization rate in the vehicle.

[0076] In some embodiments, the battery cells are arranged in a battery cell array along the second direction and the third direction. When the number of the battery cells arranged along the third direction is greater than the number of the battery cells arranged along the second direction, the number of the battery cells arranged along the second direction does not exceed 2; when the number of the battery cells arranged along the third direction is less than the number of the battery cells arranged along the second direction, the number of the battery cells arranged along the third direction does not exceed 4.

[0077] As a result, the size of the battery does not exceed the size of a conventional vehicle chassis, so that the battery can be adapted to most vehicles.

[0078] In a third aspect, the present application further provides an energy storage device, which includes the battery as described above, and the battery is configured to store electrical energy and provide electrical energy.

[0079] Since the energy storage device includes batteries that fully utilize the internal space of the battery box, the space reserved for the batteries can be reduced or the overall energy of the batteries can be increased while maintaining the volume, thereby helping to reduce the space required for the energy storage device or increase the energy storage capacity.

[0080] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0082] Figure 1 An exploded perspective view of a battery with a pole disposed in the middle of a battery cell provided in some embodiments of the present application;

[0083] Figure 2 For this application Figure 1 A partial enlarged view of part A;

[0084] Figure 3 An exploded side view of a battery with a terminal disposed in the middle of a battery cell provided in some embodiments of the present application;

[0085] Figure 4 A top view of a battery with a pole in the middle of a battery cell provided in some embodiments of the present application;

[0086] Figure 5 For this application Figure 4 A cross-sectional view along the BB direction;

[0087] Figure 6 For this application Figure 5 A partial enlarged view of part C in the middle;

[0088] Figure 7 A schematic diagram of a long-blade battery cell with a pole in the middle provided in some embodiments of the present application;

[0089] Figure 8 A schematic diagram of a long-blade battery cell with poles on both sides provided in some embodiments of the present application;

[0090] Fig. 9 A schematic diagram of short-blade battery cells provided in some embodiments of the present application, arranged in parallel with the poles being away from each other;

[0091] Fig.10 A schematic diagram of short-blade battery cells provided in some embodiments of the present application arranged in parallel with their poles close to each other;

[0092] Fig.11 An exploded perspective view of a battery with poles arranged on both sides of a battery cell provided in some embodiments of the present application;

[0093] Fig.12 For this application Fig.11 A partial enlarged view of part D in the middle;

[0094] Fig.13 A top view of a battery with poles on both sides of a battery cell provided in some embodiments of the present application;

[0095] Fig.14 For this application Fig.13 A cross-sectional view along the EE direction in FIG.

[0096] Fig.15 For this application Fig.14 A partial enlarged view of part F in the middle;

[0097] Fig.16 An exploded view of a heat exchange assembly provided for some embodiments of the present application;

[0098] Fig.17 An exploded view of a heat exchange plate provided in some embodiments of the present application;

[0099] Fig.18 An exploded perspective view of a battery with a boss provided in the middle of a containing box provided in some embodiments of the present application;

[0100] Fig.19A top view of a battery with a boss provided in the middle of a containing box provided in some embodiments of the present application;

[0101] Fig. 20 For this application Fig.19 A cross-sectional view along the GG direction in FIG.

[0102] Fig.21 For this application Fig. 20 A partial enlarged view of the middle H section;

[0103] Fig. 22 An exploded perspective view of a battery with bosses provided on both sides of a containing box provided in some embodiments of the present application;

[0104] Fig.23 A top view of a battery with bosses on both sides of a container provided in some embodiments of the present application;

[0105] Fig.24 For this application Fig.23 A cross-sectional view along direction II in FIG.

[0106] Fig.25 For this application Fig.24 A partial enlarged view of the middle J part;

[0107] Fig.26 An exploded perspective view of a container box provided with a through hole and a closed cover according to some embodiments of the present application;

[0108] Fig. 27 An exploded perspective view of a boss provided with a through hole and a closed cover according to some embodiments of the present application;

[0109] Fig.28 A schematic diagram of a convex closure cover provided in some embodiments of the present application;

[0110] Fig.29 A schematic diagram of a battery with a boss provided in some embodiments of the present application being installed on a vehicle;

[0111] Fig.30 For this application Fig.29 Schematic diagram from another perspective;

[0112] Fig.31 A top view of a battery provided with a boss provided in some embodiments of the present application installed on a vehicle;

[0113] Fig.32 For this application Fig.31 Cross-sectional view along KK direction.

[0114] Description of Reference Numerals

[0115] 10. Battery cell; 101. Pole; 102. Protrusion; 11. Receiving box; 111. Box wall; 1111. Box body; 1112. Cover body; 1113. Boss; 112. Closing cover; 113. Through hole; 114. Seal; 12. Busbar; 13. Electrical kit; 14. Heat exchange assembly; 15. Seat; X. First direction; Y. Second direction (left and right direction of vehicle); Z. Up and down direction of vehicle. DETAILED DESCRIPTION

[0116] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0117] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used 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 this application are intended to cover non-exclusive inclusions.

[0118] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0119] 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.

[0120] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0121] In the description of the embodiments of the present application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0122] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0123] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0124] At present, new energy batteries are increasingly used in life and industry. New energy batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as in aerospace and other fields.

[0125] The vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. A battery is provided inside the vehicle. The battery may be provided at the bottom, head or tail of the vehicle. The battery may be used to power the vehicle. For example, the battery may be used as an operating power source for the vehicle. The vehicle may also include a controller and a motor. The controller is used to control the battery to power the motor, for example, for starting, navigating and operating power requirements of the vehicle during driving.

[0126] In some embodiments of the present application, the battery can be used not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0127] In the embodiments of the present application, the battery may be a battery cell. A battery cell refers to a basic unit that can realize the mutual conversion between chemical energy and electrical energy, and can be used to make a battery module or a battery pack, so as to supply power to an electrical device. A battery cell may be a secondary battery, which refers to a battery cell that can be continuously used by activating the active material by charging after the battery cell is discharged. The battery cell may be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present application do not limit this.

[0128] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed between the positive electrode and the negative electrode. The separator is set between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0129] In some embodiments, the battery cell further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The present application has no specific restrictions on the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0130] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.

[0131] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in this application.

[0132] In some embodiments, the housing includes an end cap and a shell, the shell is provided with an opening, and the end cap closes the opening to form a closed space for accommodating substances such as the electrode assembly and the electrolyte. The shell may be provided with one or more openings. One or more end caps may also be provided.

[0133] In the embodiment of the present application, the battery may also be a single physical module (eg, a battery module or battery pack) including one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel, or in hybrid connection through a busbar.

[0134] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in this application.

[0135] In the embodiment of the present application, the battery may also be a single physical module (eg, a battery module or battery) including one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel, or in hybrid connection through a busbar.

[0136] In the description of the embodiments of the present application, for the convenience of explanation, Figure 1 As shown by the arrows in , the direction of arrow X is the first direction, the direction of arrow Y is the second direction and the width direction of the first surface, and the direction of arrow Z is the third direction and the length direction of the first surface. When the battery is installed in a vehicle, the direction of arrow X is also the up-down direction of the vehicle, and the direction of arrow Z is also the left-right direction of the vehicle. The direction indicated by arrow X along the vertical direction is called "up", and the opposite direction is called "down".

[0137] Below, this application is described in detail.

[0138] With the promotion and popularization of the concept of green development, new energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in the field of energy storage.

[0139] When the battery is working, it continuously releases heat, which increases the temperature inside the battery. High temperature not only affects the working efficiency of the battery, but also creates safety hazards. Therefore, in addition to the battery cells, the battery is also equipped with a heat exchange component to keep the battery working at an appropriate temperature.

[0140] How to integrate heat exchange components into batteries is one of the issues that the industry is concerned about.

[0141] The inventor of the present application hopes to develop a structure that can improve the space utilization rate inside the battery, thereby helping to reduce the volume of the battery container and improve the energy density of the battery.

[0142] Based on such a design concept, the inventor of the present application designed a battery, comprising at least one battery cell, wherein the first surface of each battery cell on one side in a first direction has a pole; a containing box, wherein a containing cavity is provided in the containing box, and each battery cell is contained in the containing cavity; and a heat exchange component is disposed on the first surface of the battery cell and is used for exchanging heat with each battery cell, wherein the projection of the pole on the first surface along the first direction and the projection of the heat exchange component on the first surface along the first direction do not overlap with each other.

[0143] Since the pole and the heat exchange assembly are both arranged on the first surface, and the projection of the pole along the first direction and the projection of the heat exchange assembly along the first direction do not overlap each other, the pole and the heat exchange assembly share the horizontal space between the first surface and the wall of the storage box, which improves the space utilization rate in the storage cavity, not only helps to reduce the size of the battery, but also helps to improve the energy density of the battery. Since the battery cell and the heat exchange assembly are accommodated in the storage cavity of the storage box, the storage box can protect the battery cell and the heat exchange assembly. Since the heat exchange assembly is arranged on the first surface of the battery cell, the heat exchange assembly can exchange heat with the battery cell.

[0144] The following is a description with reference to the accompanying drawings.

[0145] Figure 1 An exploded perspective view of a battery with a pole disposed in the middle of a battery cell provided in some embodiments of the present application; Figure 2 For this application Figure 1 A partial enlarged view of part A; Figure 3 An exploded side view of a battery with a terminal disposed in the middle of a battery cell provided in some embodiments of the present application; Figure 4 A top view of a battery with a pole in the middle of a battery cell provided in some embodiments of the present application; Figure 5 For this application Figure 4 A cross-sectional view along the BB direction; Figure 6 For this application Figure 5 A partial enlarged view of part C in the middle; Figure 7 A schematic diagram of a long-blade battery cell with a pole in the middle provided in some embodiments of the present application; Figure 8 A schematic diagram of a long-blade battery cell with poles on both sides provided in some embodiments of the present application; Fig. 9 A schematic diagram of short-blade battery cells provided in some embodiments of the present application, arranged in parallel with the poles being away from each other; Fig.10 A schematic diagram of short-blade battery cells provided in some embodiments of the present application arranged in parallel with their poles close to each other; Fig.11 An exploded perspective view of a battery with poles arranged on both sides of a battery cell provided in some embodiments of the present application; Fig.12 For this application Fig.11 A partial enlarged view of part D in the middle; Fig.13 A top view of a battery with poles on both sides of a battery cell provided in some embodiments of the present application; Fig.14 For this application Fig.13 A cross-sectional view along the EE direction in FIG. Fig.15 For this application Fig.14 A partial enlarged view of part F in the middle; Fig.16 An exploded view of a heat exchange assembly provided for some embodiments of the present application; Fig.17 An exploded view of a heat exchange plate provided in some embodiments of the present application; Fig.18 An exploded perspective view of a battery with a boss provided in the middle of a containing box provided in some embodiments of the present application; Fig.19 A top view of a battery with a boss provided in the middle of a containing box provided in some embodiments of the present application; Fig. 20 For this application Fig.19 A cross-sectional view along the GG direction in FIG. Fig.21 For this application Fig. 20 A partial enlarged view of the middle H section; Fig. 22 An exploded perspective view of a battery with bosses provided on both sides of a containing box provided in some embodiments of the present application; Fig.23 A top view of a battery with bosses on both sides of a container provided in some embodiments of the present application; Fig.24 For this application Fig.23 A cross-sectional view along direction II in FIG. Fig.25 For this application Fig.24 A partial enlarged view of the middle J part; Fig.26 An exploded perspective view of a container box provided with a through hole and a closed cover according to some embodiments of the present application; Fig. 27 An exploded perspective view of a boss provided with a through hole and a closed cover according to some embodiments of the present application; Fig.28 A schematic diagram of a convex closure cover provided in some embodiments of the present application; Fig.29 A schematic diagram of a battery with a boss provided in some embodiments of the present application being installed on a vehicle; Fig.30 For this application Fig.29 Schematic diagram from another perspective; Fig.31 A top view of a battery provided with a boss provided in some embodiments of the present application installed on a vehicle; Fig.32 For this application Fig.31 Cross-sectional view along KK direction.

[0146] First, as Figures 1 to 6 , Figures 11 to 15 , Figures 18 to 27 As shown, the present application provides a battery, comprising: at least one battery cell 10, each battery cell 10 having a pole 101 on a first surface 103 on one side in a first direction X; a receiving box 11, a receiving cavity being provided in the receiving box 11, each battery cell 10 being received in the receiving cavity; a heat exchange component 14, disposed on the first surface 103 of the battery cell 10, for exchanging heat with each battery cell 10, a projection of the pole 101 on the first surface 103 along the first direction X and a projection of the heat exchange component 14 on the first surface 103 along the first direction X not overlapping each other.

[0147] The containing box 11, i.e., the box body forming the outer contour of the battery, is used to contain other components of the battery except the containing box 11, thereby providing installation and fixing space for other components, and at the same time, plays a role of sealing and protection, and reduces the adverse effects of collision with external objects and entry of foreign matter on the normal operation of the battery during the transportation and use of the battery.

[0148] The heat exchange component 14 is provided with a flow channel 1411 and a heat exchange medium inside. The heat exchange medium can flow in the flow channel 1411 to transfer heat from one area of ​​the heat exchange component 14 to another area, thereby achieving the purpose of adjusting the temperature of the object in contact with the heat exchange component 14.

[0149] The pole 101 is disposed on the surface of the battery cell 10 and is used to be electrically connected to the components for realizing electrochemical reactions in the battery cell 10 , so as to output or input electric energy into or into the battery cell 10 through the pole 101 .

[0150] The first direction X refers to a direction perpendicular to any surface of the battery cell 10 .

[0151] The first surface 103 refers to any surface of the battery cell 10 and is perpendicular to the first direction X.

[0152] Optionally, the storage box 11 is constructed as a hollow box body with a storage cavity inside. For example, six plate-like surfaces are spliced ​​together to form a box wall, and the six plate-like surfaces surround the storage cavity; or, a box body with an opening at one end is connected to a cover body that closes the opening to form a box wall, and the storage cavity is surrounded by the closed cover 112 and the box body.

[0153] Alternatively, the box wall is constructed as a box body with an opening at one end, the box body has a receiving cavity, and the battery cell 10 placed in the receiving cavity is exposed to the outside. When the battery is installed in an electrical device, a part of the electrical device forms a cover body to close the opening to achieve the sealing of the receiving cavity.

[0154] The battery cell 10 is in the shape of a rectangular parallelepiped, and any of the six surfaces of the battery cell 10 can be the first surface 103. A pole 101 is provided on the surface of the battery cell 10. When there is one battery cell 10, the pole 101 can be provided on any surface of the battery cell 10. When there are two battery cells 10, the battery cells 10 can be arranged along the second direction Y or along the third direction Z, and no pole 101 is provided on adjacent surfaces of the battery cells 10, and the pole 101 is provided in the space between the battery cell 10 and the wall of the containing box 11. When there are multiple battery cells 10, the battery cells 10 are arranged along the second direction Y and / or the third direction Z, and no pole 101 is provided between every two adjacent battery cells 10, and the pole 101 is provided in the space between the battery cell 10 and the wall of the containing box 11.

[0155] The length direction of the first surface 103 is parallel to the direction of the longest side on the first surface 103, and the width direction of the first surface 103 is parallel to the direction of the shortest side on the first surface 103. The second direction Y is parallel to the length direction of the first surface 103, and the third direction Z is parallel to the length direction of the first surface 103.

[0156] The heat exchange assembly 14 is arranged on the surface of the battery cell 10 on which the pole 101 is arranged, and is separated from the pole 101. In other words, the pole 101 is arranged on the first surface 103 on one side of the first direction X of the battery cell 10, and the heat exchange assembly 14 is also arranged on the first surface 103, and the projection of the pole 101 along the first direction X and the projection of the heat exchange assembly 14 along the first direction X do not overlap each other. When the battery cell 10 is arranged along the second direction Y or the third direction Z, the pole 101 forms a regular area arranged in a straight line, and the heat exchange assembly 14 can be arranged in other areas outside this area. One or more heat exchange assemblies 14 can be arranged according to the size and number of other areas, and the present application does not impose any special limitation on the number of heat exchange assemblies 14.

[0157] In the battery in the embodiment of the present application, since the pole 101 and the heat exchange assembly 14 are both arranged on the first surface 103, and the projection of the pole 101 along the first direction X and the projection of the heat exchange assembly 14 along the first direction X do not overlap each other, the projection here refers to the projection in the same plane perpendicular to the first direction X, for example, both can be projected on the first surface 103. Therefore, the pole 101 and the heat exchange assembly 14 share the horizontal space between the first surface 103 and the wall of the storage box 11, which improves the space utilization rate in the storage cavity, not only helps to reduce the size of the battery, but also helps to improve the energy density of the battery. Since the battery cell 10 and the heat exchange assembly 14 are accommodated in the storage cavity of the storage box 11, the storage box 11 can protect the battery cell 10 and the heat exchange assembly 14. Since the heat exchange assembly 14 is arranged on the first surface 103 of the battery cell 10, the heat exchange assembly 14 can exchange heat with the battery cell 10.

[0158] In some embodiments, Figures 7 to 10 As shown, the first surface 103 has a first area 1031 and a second area 1032 , the pole 101 is disposed in the first area 1031 , and the heat exchange component 14 is disposed in the second area 1032 .

[0159] The first surface 103 is divided into two regions, namely, a first region 1031 where the pole 101 is arranged and a second region 1032 where the heat exchange component 14 is arranged. A plurality of first regions 1031 and / or second regions 1032 may be divided on the first surface 103 .

[0160] For a battery cell 10, the area of ​​the first region 1031 may be larger than the projection area of ​​the pole 101 itself onto the first surface 103, and the edge of the first region 1031 may be located outside the contour of the pole 101. Generally, two poles 101 are provided, and the area occupied by the pole 101 itself and the area between the two poles 101 are both considered as the range of the first region 1031. The length of the second direction Y of the first region 1031 is greater than the maximum distance between the edges of the second direction Y of the two poles 101. Optionally, the length of the second direction Y of the first region 1031 is the length of the second direction Y of the first surface 103.

[0161] If the distance between the two poles 101 along the third direction Z is small, the length of the first area 1031 in the third direction Z is greater than the maximum distance between the edges of the two poles 101 in the third direction Z; if the distance between the two poles 101 along the third direction Z is large, two first areas 1031 are set, the poles 101 and the first areas 1031 are arranged in a one-to-one correspondence, and the length of the first area 1031 in the third direction Z is greater than the edge distance of the poles 101 in the third direction Z.

[0162] Among them, along the third direction Z, when the maximum distance between the outer contours of the two poles 101 is greater than half the length of the first surface 103, the distance between the two poles 101 along the third direction Z is considered to be large; otherwise, the distance between the two poles 101 along the third direction Z is considered to be small.

[0163] For the plurality of battery cells 10, the plurality of battery cells 10 are arranged along the second direction Y, so that the pole 101 extends along the second direction Y, and the first region 1031 extends along the second direction Y, that is, the first region 1031 extends from the battery cell 10 located on one side of the second direction Y to the battery cell 10 located on the other side of the second direction Y. The length of the first region 1031 in the third direction Z is greater than the maximum distance between the edges of the poles 101 in the third direction Z.

[0164] If the distance between the two poles 101 in each battery cell 10 along the third direction Z is small, the length of the first area 1031 in the third direction Z is greater than the maximum distance between the edges of the two poles 101 in the third direction Z; if the distance between the two poles 101 in each battery cell 10 along the third direction Z is large, two first areas 1031 are set, and the poles 101 located on the same side are set in the same first area 1031, and the length of the first area 1031 in the third direction Z is greater than the edge distance between the poles 101 located on the same side in the third direction Z.

[0165] The entire area on the first surface 103 except the first area 1031 is regarded as the second area 1032 , and the heat exchange component 14 is disposed at least partially in the second area 1032 .

[0166] It is understandable that the first region 1031 and the second region 1032 may both be constructed in the form of a rectangle, a parallelogram, etc., and the present application does not impose any special limitation on the shapes of the first region 1031 and the second region 1032 .

[0167] Thus, the poles 101 are concentrated in the first area 1031 , and the heat exchange components 14 are concentrated in the second area 1032 . The poles 101 arranged in the first area 1031 and the heat exchange components 14 arranged in the second area 1032 do not interfere with each other.

[0168] In some embodiments, Figures 1 to 7 , Fig.10 , Figures 18 to 21 , Fig.26 and Fig. 27 As shown, the number of the second regions 1032 is two, and the two second regions 1032 are respectively located on both sides of the first region 1031 .

[0169] The first surface 103 can be divided into two second areas 1032 and one first area 1031. The first area 1031 extends from one end of the first surface 103 to the other end of the first surface 103, separating the first surface 103 into two second areas 1032, and the two second areas 1032 are located on both sides of the first area 1031 respectively.

[0170] The two second regions 1032 have the same area and shape, and the first region 1031 is located on the midline of the first surface 103 .

[0171] Since the first area 1031 is located in the middle and the two second areas 1032 are located on both sides, the poles 101 are concentrated in the first area 1031 relatively located in the middle of the first surface 103 (for example, concentrated in the first area 1031 extending along the midline of the first surface 103 and symmetrical about the midline), and two heat exchange components 14 can be respectively arranged in the space on both sides of the pole 101, and the pole 101 and the heat exchange component 14 fully utilize the accommodation cavity space on the first surface 103. The arrangement is compact and reasonable, which improves the space utilization rate in the accommodation cavity, not only helps to reduce the size of the battery, but also helps to improve the energy density of the battery.

[0172] In some embodiments, Figure 8 , Fig. 9 , Figures 11 to 15 , Figure 22 to Figure 25 , the number of the first regions 1031 is two, and the second region 1032 is located between the two first regions 1031 .

[0173] The first surface 103 can be divided into two first regions 1031 and one second region 1032. The second region 1032 extends from one end of the first surface 103 to the other end of the first surface 103, separating the first surface 103 into two first regions 1031, and the two first regions 1031 are located on both sides of the second region 1032 respectively.

[0174] The two first regions 1031 have the same area and shape, and the second region 1032 is located on the midline of the first surface 103 .

[0175] Since the second area 1032 is located in the middle and the two first areas 1031 are located on both sides, a heat exchange component 14 is arranged in the middle of the first surface 103, and the spaces on both sides of the heat exchange component 14 are used to arrange the poles 101, and the poles 101 and the heat exchange component 14 fully utilize the space of the accommodation cavity on the first surface 103. The arrangement is compact and reasonable, which improves the space utilization rate in the accommodation cavity, not only helps to reduce the size of the battery, but also helps to improve the energy density of the battery.

[0176] In some embodiments, the area of ​​the second region 1032 is greater than the area of ​​the first region 1031 .

[0177] Optionally, a first region 1031 and two second regions 1032 are provided. The lengths of the second direction Y of the first region 1031 and the second region 1032 are both the same as the length of the second direction Y of the first surface 103, and the length of the third direction Z of the first region 1031 is not greater than half of the length of the third direction Z of the first surface 103, so that the two poles 101 are arranged close to each other in the third direction Z. A heat exchange component 14 is provided on at least one of the two second regions 1032. Furthermore, the area of ​​the second region 1032 is greater than the contact area required by the heat exchange component 14 to meet the heat exchange requirements of the battery cell 10.

[0178] Likewise, optionally, two first regions 1031 and one second region 1032 are provided. The lengths of the second direction Y of the first region 1031 and the second region 1032 are both the same as the length of the second direction Y of the first surface 103, and the two first regions 1031 are respectively provided on both sides of the third direction Z of the first surface 103, and the length of the third direction Z of the first region 1031 is greater than the edge distance of the pole 101 located in the region in the third direction Z. Further, the area of ​​the second region 1032 is greater than the contact area required by the heat exchange assembly 14 to meet the heat exchange requirements of the battery cell 10.

[0179] As a result, the poles 101 are concentrated in the smaller first area 1031 , leaving a larger area for the heat exchange assembly 14 , and the contact area between the heat exchange assembly 14 and the battery cell 10 is larger, so that the heat exchange assembly 14 can meet the heat exchange requirements of the battery cell 10 .

[0180] In some embodiments, Figure 1 , Fig.11 , Fig.18 , Fig. 22 , Fig.26 and Fig. 27 As shown, the plurality of battery cells 10 are arranged at least along the second direction Y, the second direction Y is consistent with the width direction of the first surface 103 , and the heat exchange assembly 14 at least partially covers the second region 1032 of each battery cell 10 .

[0181] Optionally, the plurality of battery cells 10 are arranged along the second direction Y, and the first region 1031 and the second region 1032 both extend along the second direction Y. The heat exchange assembly 14 is disposed in the second region 1032 and is in contact with each battery cell 10 .

[0182] Also optionally, the plurality of battery cells 10 are arranged along the third direction Z. On two adjacent battery cells 10 , the first regions 1031 and the second regions 1032 alternate with each other. The heat exchange assembly 14 is disposed in at least one second region 1032 on each battery cell 10 .

[0183] Also optionally, a plurality of battery cells 10 are arranged along the third direction Z to form a battery cell unit, and a plurality of battery cell units are arranged along the second direction Y. The first region 1031 and the second region 1032 both extend along the second direction Y, and the first region 1031 and the second region 1032 alternate with each other along the third direction Z. The heat exchange assembly 14 is disposed in at least one second region 1032 on each battery cell 10 .

[0184] Since the plurality of battery cells 10 are arranged along the second direction Y, the first region 1031 and the second region 1032 can both extend along the second direction Y to form a relatively regular region for arranging the pole 101 and the heat exchange assembly 14. Since the heat exchange assembly 14 at least partially covers the second region 1032 of each battery cell 10, the heat exchange assembly 14 is in contact with each battery cell 10, so that the heat exchange assembly 14 can perform heat exchange on each battery cell 10.

[0185] In some embodiments, Fig.15 , Fig.16 , Fig.18 , Fig.26 and Fig. 27 As shown, the heat exchange assembly 14 includes: a heat exchange plate 141; and an adhesive layer 142, including a first adhesive layer 1421 provided on the surface of the heat exchange plate 141 on the side close to the battery cell 10, and the heat exchange plate 141 is bonded to the battery cell 10 through the first adhesive layer 1421.

[0186] The heat exchange plate 141 contains a heat exchange medium, such as water. Fig.17 As shown, a flow channel 1411 may be provided inside the heat exchange plate 141, and the heat exchange medium flows in the flow channel 1411. Optionally, the flow channel 1411 is arranged inside the heat exchange plate 141 in a serpentine shape.

[0187] The heat exchange plate 141 can be bonded to the battery cell 10 or fixed to the container box 11 by screws. A structure that can be mutually engaged can also be provided in the heat exchange plate 141 and the container box 11. The present application does not impose any special limitation on the fixing method of the heat exchange plate 141.

[0188] The heat exchange plate 141 can be fixed by the adhesive layer 142. The adhesive layer 142 includes a first adhesive layer 1421. The first adhesive layer 1421 is disposed on a side surface of the heat exchange plate 141 close to the battery cell 10, that is, the heat exchange plate 141 is bonded to the first surface 103 of the battery cell 10 through the first adhesive layer 1421. The projection of the heat exchange plate 141 onto the first surface 103 is located within the range of the second area 1032.

[0189] Optionally, along the first direction X, the sum of the thickness of the first adhesive layer 1421 and the thickness of the heat exchange plate 141 is not greater than the distance between the first surface 103 and the inner wall of the containing box 11. A gap is provided between the heat exchange plate 141 and the inner wall of the containing box 11 to accommodate tolerances that may occur during production and installation.

[0190] Since the heat exchange plate 141 is bonded to the surface of the battery cell 10 through the first adhesive layer 1421, the heat exchange plate 141 and the battery cell 10 are in close contact, which helps to improve the heat exchange effect of the heat exchange plate 141 on the battery cell 10. In addition, since the heat exchange plate 141 and the battery cell 10 are bonded to form a whole, the structural strength of the battery cell 10 is improved.

[0191] In some embodiments, see Fig.15 , Fig.16 , Fig.18 , Fig.26 and Fig. 27 The heat exchange assembly includes: a heat exchange plate 141; and an adhesive layer 142, the adhesive layer 142 includes a second adhesive layer 1422 provided on the surface of the heat exchange plate 141 away from the battery cell 10, and the heat exchange plate 141 is bonded to the containing box 11 through the second adhesive layer 1422.

[0192] The adhesive layer 142 also includes a second adhesive layer 1422. The second adhesive layer 1422 is disposed on the surface of the heat exchange plate 141 facing away from the battery cell 10, filling the gap between the heat exchange plate 141 and the inner wall surface of the container 11, so that the heat exchange plate 141 is bonded to the inner wall surface of the container 11. The heat exchange plate 141 is fixed in the container 11, and the battery cell 10 bonded to the heat exchange plate 141 is also fixed.

[0193] In addition, the adhesive layer 142 may include only the second adhesive layer 1422 , that is, the heat exchange plate 141 is bonded to the housing box 11 via the second adhesive layer 1422 , and no adhesive layer is disposed between the heat exchange plate 141 and the battery cell 10 .

[0194] Since the heat exchange plate 141 is bonded to the inner wall surface of the storage box 11 through the second adhesive layer 1422, the heat exchange plate 141 is firmly fixed in the storage cavity. The heat exchange plate 141 and the storage box 11 are bonded as one, which helps to improve the structural strength of the storage box 11. In the case where the adhesive layer 142 is provided on both sides of the heat exchange plate 141, since the two sides of the heat exchange plate 141 are respectively bonded to the battery cell 10 and the storage box 11, the battery cell 10 is firmly fixed in the storage cavity.

[0195] In some embodiments, Figure 1 , Figure 3 , Fig.11 ,like Figures 16 to 18 , Fig. 22 , Fig.26 and Fig. 27 As shown, the heat exchange plate 141 is configured to be a flat plate, or the heat exchange plate 141 is configured to be undulating along the first direction X.

[0196] Optionally, the heat exchange plate 141 is in a flat plate shape. The surface of the heat exchange plate 141 is a plane and can be closely attached to the surface of the battery cell 10 .

[0197] Also optionally, the heat exchange plate 141 is configured to be undulating along the first direction X. The maximum distance between the edges of the heat exchange plate 141 in the first direction X is smaller than the distance between the first surface 103 and the inner wall of the containing box 11 .

[0198] In the actual manufacturing process, the container 11 includes a box body with an opening at one end and a cover body that closes the opening. The battery cell 10 is placed in the box body, and the surface of the battery cell 10 close to the opening is regarded as the first surface 103, and the heat exchange plate 141 is placed on the first surface 103. Adhesive is applied to at least one side surface of the heat exchange plate 141 in the first direction X, and the cover body is pressed against the opening and the heat exchange plate 141 at the same time. The heat exchange plate 141 is deformed in the first direction X, and the adhesive moves from the position with high pressure to the periphery to adapt to the space between the heat exchange plate 141 and the inner wall surface of the container 11.

[0199] By forming the heat exchange plate 141 into a flat plate, the heat exchange plate 141 can be closely attached to the surface of the battery cell 10, thereby improving the heat exchange effect. The flat plate-shaped heat exchange plate 141 has a simple structure and is easy to manufacture. By forming the heat exchange plate 141 into a shape that undulates along the first direction X, the heat exchange plate 141 can be compressed by the force in the first direction X. When the distance between the surface of the battery cell 10 and the inner wall of the container 11 is small due to production tolerance, the undulating heat exchange plate 141 can deform to adapt to the smaller distance, thereby reducing the influence of production tolerance.

[0200] In some embodiments, the heat exchange plate 141 is configured to be compressible along the first direction X.

[0201] Optionally, the heat exchange plate 141 is configured to have an undulating shape along the first direction X. This structure allows the heat exchange plate 141 to have a space that allows deformation.

[0202] Also optionally, at least part of the heat exchange plate 141 is made of elastic material, such as rubber. The entire outer wall of the heat exchange plate 141 can be made of elastic material, or both surfaces of the heat exchange plate 141 in the first direction X can be made of elastic material.

[0203] Therefore, the heat exchange plate 141 can be adapted to smaller gaps in the first direction X, so that the heat exchange plate 141 can not only continuously fit the battery cell 10 and maintain a high heat exchange efficiency, but also reduce the impact of production tolerances.

[0204] In some embodiments, Figure 6 , Fig.15 , Fig.21 and Fig.25 As shown, the heat exchange assembly 14 located in the second area 1032 is in contact with the first surface 103 of the battery and the inner wall surface of the containing box 11 respectively.

[0205] Since the heat exchange assembly 14 is in contact with the first surface 103 and the inner wall surface of the container box 11 respectively, the heat exchange assembly 14 fully occupies the accommodating cavity space on the first surface 103, meeting the installation space required for the heat exchange assembly 14. The heat exchange assembly 14 is limited between the first surface 103 and the inner wall surface of the container box 11, and the heat exchange assembly 14 is in contact with the first surface 103, so that the heat exchange efficiency between the heat exchange assembly 14 and the battery cell 10 is relatively high.

[0206] In some embodiments, Figure 7 and Figure 8 As shown, in the accommodating cavity, the battery cell 10 is a long-blade battery cell, and multiple long-blade battery cells are arranged along the second direction Y to form a battery cell group. The second direction Y is consistent with the width direction of the first surface 103. In the battery cell group, the pole 101 is arranged along the second direction Y, and the heat exchange assembly 14 extends along the second direction Y.

[0207] The Changdao battery cells are produced using a stacking process, skipping the standardized module link and directly integrating a single battery cell into the battery pack, forming a slender arrangement structure similar to a honeycomb aluminum plate.

[0208] Optionally, the length dimension of the long-blade battery cell in the third direction Z is in the range of 800 mm to 1200 mm. For example, the length dimension may be 800 mm, 850 mm, 900 mm, 1000 mm, 1100 mm, or 1200 mm.

[0209] A plurality of long-blade battery cells are arranged along the second direction Y to form a battery cell group, and the poles 101 are arranged along the second direction Y. The surface of the battery cell group, the poles 101 and the inner wall surface of the receiving box 11 form an "I"-shaped arrangement, and at least one side of the poles 101 in the third direction Z has a space capable of accommodating the heat exchange assembly 14. The heat exchange assembly 14 is arranged in the space.

[0210] Optionally, the pole 101 is arranged in the middle of each first surface 103 so that all poles 101 of the battery cell group are located on a midline parallel to the second direction Y, and both sides of the pole 101 in the third direction Z have enough space to accommodate the heat exchange assembly 14.

[0211] Also optionally, the two poles 101 are respectively arranged on both sides of the third direction Z of the first surface 103, and there is a space sufficient to accommodate the heat exchange component 14 between all the poles 101 on one side of the third direction Z of the battery cell group and all the poles 101 on the other side of the third direction Z of the battery cell group, and the heat exchange component 14 is arranged in the space.

[0212] By arranging the long blade battery cells along the second direction Y, the pole 101 is arranged in a straight line along the second direction Y, so that the accommodating cavity on the side of the pole 101 has a larger and more complete space, which meets the space requirement for installing the heat exchange component 14. By arranging the heat exchange component 14 in the space, the pole 101 and the heat exchange component 14 can make full use of the accommodating cavity space on the first surface 103. Since the long blade battery cells are arranged along the second direction Y, the heat exchange component 14 extends along the second direction Y, so the heat exchange component 14 can cover multiple long blade battery cells to perform heat exchange on the long blade battery cells.

[0213] In some embodiments, Fig. 9 and Fig.10As shown, in the accommodating cavity, the battery cell 10 is a short-knife battery cell, and a plurality of battery cell units are arranged along the second direction Y to form a battery cell group. The battery cell unit includes two or more short-knife battery cells arranged in parallel along the third direction Z. The second direction Y is consistent with the width direction of the first surface 103, and the third direction Z is consistent with the length direction of the first surface 103. Two adjacent short-knife battery cells along the third direction Z are arranged in parallel with the poles 101 close to each other or with the poles 101 far away from each other. In the battery cell group, the poles 101 are arranged along the second direction Y, and the heat exchange component 14 extends along the second direction Y.

[0214] The short-blade battery cells are produced using the stacking process, skipping the standardized module link, combining multiple battery cells into components, and integrating the components into the battery pack.

[0215] Optionally, the length dimension of the short-blade battery cell in the third direction Z is in the range of 350 mm to 700 mm. For example, the length dimension may be 350 mm, 400 mm, 450 mm, 500 mm, 550 mm, 600 mm, 650 mm, or 700 mm.

[0216] The battery cell unit includes at least two short-blade battery cells arranged in parallel along the third direction Z. The length of the battery cell unit in the second direction Y is the same as the length of the battery cell 10 in the second direction Y. The length of the battery cell unit in the third direction Z is the sum of the lengths of all the battery cells 10 included in it in the third direction Z. A plurality of battery cell units are arranged along the first direction X to form a battery cell group, and the battery cells 10 in the battery cell group are arranged in a matrix.

[0217] The pole 101 is arranged on one side of the first surface 103 in the third direction Z. Optionally, two adjacent short-blade battery cells along the third direction Z are arranged in parallel with the poles 101 close to each other. The pole 101 is located on the center line of the battery cell group parallel to the second direction Y, and the heat exchange assembly 14 can be arranged on both sides of the center line in the third direction Z.

[0218] Alternatively, two adjacent short-blade battery cells along the third direction Z are arranged in parallel in a manner that the poles 101 are away from each other. All poles 101 on one side of the battery cell group in the third direction Z are arranged along the second direction Y, and all poles 101 on the other side of the battery cell group in the third direction Z are arranged along the second direction Y. A heat exchange assembly 14 may be provided in the space between the poles 101 along the third direction Z.

[0219] Since the plurality of battery monomer units are arranged along the second direction Y, and the adjacent short-blade battery monomers along the third direction Z are arranged in parallel with the poles 101 being close to or far from each other, the accommodation cavity on the first surface 103 of the short-blade battery monomer has a larger and more complete space, which can meet the space requirement for installing the heat exchange component 14. Since the heat exchange component 14 extends along the second direction Y, the heat exchange component 14 can cover the plurality of short-blade battery monomers to perform heat exchange on the short-blade battery monomers.

[0220] In some embodiments, Figures 18 to 25 As shown, the receiving box 11 forms a receiving portion on a side facing the battery cell 10 , and the pole 101 is at least partially received in the receiving portion.

[0221] The accommodating portion, i.e., the space formed on the surface of the box wall of the accommodating box 11 facing the accommodating cavity, is connected to the space of the accommodating cavity on at least one side facing the accommodating cavity, so that at least part of the components protruding from the surface of the battery cell 10 can extend into the space of the accommodating portion through the open position of the accommodating portion.

[0222] The specific structural form of the receiving portion is not limited, for example, it can be a receiving groove. The components protruding from the surface of the battery cell 10 include the pole 101 .

[0223] By providing a receiving portion on the receiving box 11, on the one hand, it is helpful to adapt the spatial shape of the receiving box 11 to the contour shape formed by the pole 101, which is helpful to reduce the requirements for the arrangement of the pole 101; on the other hand, it is helpful to reduce the overall size and volume of the receiving box 11, improve the space utilization rate in the receiving box 11, reduce the overall volume of the battery, and help to improve the energy density of the battery.

[0224] In some embodiments, Fig.12 , Fig.15 , Fig.21 and Fig.25 As shown, a busbar 12 is provided in the first area 1031 . The busbar 12 is used to connect the poles 101 of adjacent battery cells 10 . The busbar 12 is at least partially accommodated in the accommodation portion.

[0225] The busbar 12 is used to electrically connect the plurality of battery cells 10 so as to realize series connection or parallel connection between the battery cells 10 .

[0226] It should be noted that the specific structure of the busbar 12 and the method of realizing the series and parallel connection between the battery cells 10 have been applied in the relevant technology and will not be elaborated here.

[0227] The battery cells 10 are arranged along the second direction Y and / or the third direction Z, and the poles 101 on adjacent battery cells 10 are connected by busbars 12. The busbars 12 span the adjacent poles 101, and the projection of the busbars 12 onto the first surface 103 is within the range of the first area 1031. The busbars 12 and at least a portion of the poles 101 are accommodated in the accommodation portion.

[0228] This helps to make the spatial shape inside the storage box 11 better adapt to the arrangement relationship between the busbar 12 and the battery cell 10, so that the shape of the storage cavity can adapt to the shape of the battery cell 10, which helps to reduce the gap between the inner wall of the storage box 11 and the battery cell 10 and improve the space utilization of the battery.

[0229] In some embodiments, Fig.18 , Fig.21 , Fig. 22 , Figure 25 to Figure 27 As shown, the battery further includes: an electrical kit 13, the electrical kit 13 is at least partially disposed in the first area 1031, and the electrical kit 13 in the first area 1031 is at least partially accommodated in the accommodation portion.

[0230] The electrical kit 13 is a variety of electrical components in the battery used to control the input or output of electrical energy into or out of the battery.

[0231] The battery further includes an electrical assembly 13. At least part of the electrical assembly 13 is disposed in the first area 1031. Along the first direction X, the projection of the accommodating portion onto the first surface 103 and the projection of the electrical assembly 13 disposed in the first area 1031 onto the first surface 103 at least partially overlap, and the part of the electrical assembly 13 can be accommodated in the accommodating portion.

[0232] Thus, the first area 1031 is integrated with at least part of the pole 101, the current collector 12 and the electrical kit 13, and a receiving portion is provided on the receiving box 11 corresponding to the first area 1031, which can accommodate more parts protruding from the surface of the battery cell 10, thereby maximizing the use of the space in the receiving portion. This is beneficial to reducing the gap between the inner wall of the receiving cavity and the battery cell 10, and improving the space utilization of the battery.

[0233] In some embodiments, the electrical kit 13 includes at least one of a sampling structure, a battery management system, a relay, and a high voltage power distribution unit.

[0234] The battery management system is used to manage and control each electrical device in each battery, monitor the operating status of the battery, and adopt appropriate control strategies according to its operating status to prevent the battery from overcharging and over-discharging, so as to extend the battery life.

[0235] Relay, when the battery in the electrical device needs to be charged or discharged, the relay responds to the instructions of the power system to open or close the connection between the battery and other electrical components in the electrical device to achieve the transmission or interruption of electrical energy.

[0236] The high-voltage distribution unit is used to monitor the high-voltage connection status and insulation status of the battery in real time, so as to manage the safety of high-voltage electricity use in the battery.

[0237] The sampling structure is used to obtain parameter information such as voltage and temperature of each component in the battery, such as the battery cell 10, and transmit the obtained parameter information to the battery management system (BMS) so that the battery management system can reasonably implement different control strategies to enable the battery to charge and discharge safely and efficiently.

[0238] It should be noted that the specific structures of the sampling structure, battery management system, relay, and high-voltage distribution unit and the principles for realizing corresponding functions have been applied in related technologies and will not be elaborated here.

[0239] Thus, at least one of the sampling structure, the battery management system, the relay and the high-voltage distribution unit can be accommodated in the accommodating portion, reducing the accommodating cavity space occupied by the original location thereof, which is beneficial to reducing the gap between the inner wall of the accommodating cavity and the battery cell 10 and improving the space utilization of the battery.

[0240] In some embodiments, Figures 18 to 25 , Fig. 27 As shown, the receiving box 11 has a boss 111, and the boss 111 is formed by the receiving box 11 bulging along the first direction X toward the direction away from the battery cell 10. The boss 111 forms a receiving portion on the side facing the battery cell 10, and at least a portion of the pole 101 and the electrical kit 13 are located in the receiving portion and a gap is left between the inner wall at the boss 111.

[0241] There may be multiple bosses 111. The receiving portion of the boss 111 is at least used to receive the pole 101. When the distance between the two poles 101 along the third direction Z is small, only one boss 111 is required to be constructed on the receiving box 11 corresponding to the setting position of the pole 101, and the projection of the boss 111 along the first direction X to the first surface 103 is located within the range of the pole 101, and at least a portion of the pole 101 is located in the receiving portion. When the distance between the two poles 101 along the third direction Z is large, two bosses 111 are respectively provided corresponding to the poles 101 located on both sides to receive at least a portion of the pole 101.

[0242] The receiving portion can also be used to receive the electrical kit 13. Optionally, at least part of the electrical kit 13 is disposed between the pole 101 and the boss 111, so that at least part of the electrical kit 13 is received in the receiving portion. Also optionally, part of the electrical kit 13 is disposed on a surface of the battery cell 10 adjacent to or opposite to the first surface 103, and the boss 111 is constructed on the receiving box 11 corresponding to the location of the electrical kit 13.

[0243] Along the first direction X, the sum of the length of the pole 101 and the length of the electrical kit 13 is smaller than the distance between the inner wall surface of the boss 111 and the first surface 103, so that a gap is left between the pole 101 and the electrical kit 13 and the inner wall of the boss 111, thereby reducing the probability that the boss 111 is deformed by the pressure in the first direction X and damages the pole 101 and the electrical kit 13 in the accommodating portion.

[0244] Since the boss 111 is formed by the accommodating box 11 bulging in the direction away from the battery cell 10 along the first direction X, the accommodating portion is formed on the side of the boss 111 facing the battery cell 10. Therefore, the space of the accommodating portion can be increased by increasing the bulging height of the boss 111 within a certain range. The boss 111 can be set according to the size of the parts to be accommodated, and as many parts as possible can be accommodated in the accommodating portion, thereby reducing the space occupied by the parts in the accommodating cavity. This is conducive to reducing the gap between the inner wall of the accommodating cavity and the battery cell 10, and improving the space utilization rate of the battery.

[0245] In some embodiments, the length direction of the boss 111 is consistent with the second direction Y, the length of the boss 111 along the second direction Y is greater than or equal to the length of the accommodating cavity along the second direction Y, and the second direction Y is consistent with the width direction of the first surface 103, or, the length direction of the boss 111 is consistent with the third direction Z, the length of the boss 111 along the third direction Z is greater than or equal to the length of the accommodating cavity along the third direction Z, and the third direction Z is consistent with the length direction of the first surface 103.

[0246] The length direction of the boss 111 refers to the direction of the longest side of the boss 111 .

[0247] Since the length of the boss 111 along the second direction Y is greater than or equal to the length of the accommodating cavity along the second direction Y, the projection of the boss 111 along the first direction X covers the range of all battery cells 10 along the second direction Y, so that the poles 101 of all battery cells 10 can be accommodated in the boss 111. Since the length of the boss 111 along the third direction Z is greater than or equal to the length of the accommodating cavity along the third direction Z, the boss 111 has a larger accommodating portion, which can accommodate part of the poles 101 and more electrical kits 13. This is conducive to reducing the space occupied by the electrical kit 13 and other parts in other positions in the accommodating cavity, and improving the space utilization of the battery.

[0248] In some embodiments, the length of the boss 111 along the second direction Y or the third direction Z is not greater than 500 mm. For example, the length may be 50 mm, 100 mm, 150 mm, 200 mm, 250 mm, 300 mm, 350 mm, 400 mm, 450 mm, or 500 mm.

[0249] Therefore, on the one hand, it is beneficial for the surface of the containing box 11 to have a larger flat area so as to adapt to other components in the electrical device and reduce the adverse effect of the boss 111 on the arrangement of other components in the electrical device; on the other hand, it reduces the adverse effect of the boss 111 caused by its large size and resulting in reduced structural strength, and reduces the probability of damage to components in the containing part due to deformation of the boss 111.

[0250] In some embodiments, the length of the boss 111 along the second direction Y or the third direction Z is in the range of 50 mm to 300 mm. For example, the length may be 50 mm, 80 mm, 100 mm, 150 mm, 160 mm, 200 mm, 220 mm, 250 mm, or 300 mm.

[0251] Thus, the space in the receiving portion can be sufficient to accommodate the protruding components on the battery cell 10, and the receiving box 11 can maintain sufficient structural strength.

[0252] In some embodiments, Figure 2 , Figure 6 , Fig.12 , Fig.15 , Fig.21 and Fig.25 As shown, a protrusion 102 is provided in the first region 1031 of the battery cell 10 , and the pole 101 is provided on a surface of the protrusion 102 facing the first direction X, and at least a portion of the protrusion 102 is located in the receiving portion.

[0253] A protrusion 102 protruding toward the box wall is constructed in the first area 1031 . The shape of the protrusion 102 can be a cylinder, a cube, etc. The present application does not impose any special limitation on the specific shape of the protrusion 102 .

[0254] The pole 101 is arranged on the side surface of the protrusion 102 away from the battery cell 10. The plurality of battery cells 10 are arranged at least along the second direction Y, and the first area 1031 and the protrusion 102 both extend along the second direction Y. Corresponding to the protrusion 102 in each first area 1031, a boss 111 is constructed on the receiving box 11, so that at least part of the pole 101 is received in the receiving portion. In the first direction X, the length of the protrusion 102 can be greater than the distance between the inner wall surface of the receiving box 11 and the first surface 103, so that all the poles 101 and part of the protrusion 102 are received in the receiving portion.

[0255] Furthermore, the busbar 12 connecting the adjacent poles 101 is received in the receiving portion. A portion of the electrical assembly 13 may be disposed on a side surface of the protrusion 102 away from the battery cell 10 , so that the portion of the electrical assembly 13 is received in the receiving portion.

[0256] By setting a protrusion 102 in the first area 1031 of the battery cell 10, and setting the pole 101 on the protrusion 102, the pole 101 is isolated from the second area 1032, and the heat exchange component 14 located in the second area 1032 does not interfere with the pole 101, thereby reducing the risk of the pole 101 and the heat exchange component 14 being connected and conducting electricity; it is also possible to increase the height of the pole 101 in the first direction X without reducing the strength of the pole, so as to provide a heat exchange component accommodating space with a suitable height as needed.

[0257] In some embodiments, Figure 2 , Figure 3 , Figure 5 , Figure 6 , Fig.14 , Fig.15 , Fig. 20 , Fig.21 , Fig.24 and Fig.25 As shown, the pole 101 includes a positive pole and a negative pole, and the positive pole and the negative pole are arranged on the protrusion 102 at an interval.

[0258] Two poles 101 are provided on a battery cell 10, namely a positive pole connected to the positive pole of the battery cell 10 and a negative pole connected to the negative pole of the battery cell 10. The positive pole and the negative pole are arranged on a protrusion 102 at intervals. A protrusion 102 can be constructed on the surface of the battery cell 10, and the positive pole and the negative pole can be arranged on the same protrusion 102; or relatively independent protrusions 102 can be constructed on the surface of the battery corresponding to the positive pole and the negative pole, respectively.

[0259] By arranging the positive electrode column and the negative electrode column at intervals on the protrusion 102, the positive electrode column and the negative electrode column are relatively independent and do not interfere with each other, thereby reducing the risk of short circuit between the two.

[0260] In some embodiments, Figure 2 , Figure 3 , Figure 5 , Figure 6 , Fig. 20 and Fig.21 As shown, the number of protrusions 102 is one, the positive pole and the negative pole are spaced apart from each other on the protrusion 102, and the line connecting the positive pole and the negative pole is parallel to the length direction of the first surface 103, or the line connecting the positive pole and the negative pole is parallel to the width direction of the first surface 103.

[0261] Only one protrusion 102 is constructed on the surface of the battery cell 10, and the positive electrode column and the negative electrode column are arranged on the protrusion 102 at intervals. The positive electrode column and the negative electrode column can be arranged on the diagonal line of the protrusion 102, or the positive electrode column and the negative electrode column can be arranged on the protrusion 102 at intervals along the second direction Y, or the positive electrode column and the negative electrode column can be arranged on the protrusion 102 at intervals along the third direction Z.

[0262] Among them, when the positive electrode column and the negative electrode column are arranged at intervals from each other along the second direction Y, the line connecting the positive electrode column and the negative electrode column is parallel to the width direction of the first surface 103; when the positive electrode column and the negative electrode column are arranged at intervals from each other along the third direction Z, the line connecting the positive electrode column and the negative electrode column is parallel to the length direction of the first surface 103.

[0263] The plurality of battery cells 10 are arranged at least along the second direction Y, and the first region 1031 and the protrusion 102 both extend along the second direction Y. A heat exchange assembly 14 may be disposed in the second region 1032 on at least one side of the protrusion 102 in the third direction Z.

[0264] The protrusion 102 may be disposed in the middle or on one side of the first surface 103 . The present application does not impose any particular limitation on the location of the protrusion 102 on the surface of the battery cell 10 .

[0265] Since the positive pole and the negative pole are arranged on the same protrusion 102, only one protrusion 102 needs to be manufactured to provide a mounting position for the two poles 101, which is conducive to reducing the manufacturing steps of the first shell wall and reducing production costs. By arranging the positive pole and the negative pole in a manner that the line connecting the two poles is parallel to the length direction of the first surface 103, or arranging the positive pole and the negative pole in a manner that the line connecting the two poles is parallel to the width direction of the first surface 103, the arrangement is more regular and convenient for later maintenance. Moreover, since the area of ​​the protrusion 102 for setting two poles 101 can be designed to be larger than the area of ​​the protrusion for setting a single pole 101, it helps to improve the strength of the location where the pole 101 is set in the battery cell 10.

[0266] In some embodiments, Fig.14 , Fig.15 , Fig.24 and Fig.25 As shown, at least two protrusions 102 are arranged at intervals from each other, the positive pole is arranged on one protrusion 102, and the negative pole is arranged on the other protrusion 102.

[0267] Two protrusions 102 are constructed in the first area 1031 of the first surface 103. The two protrusions 102 are arranged in the first area 1031 at intervals, and the two protrusions 102 can be arranged along the second direction Y or the third direction Z. The positive electrode column is arranged on one protrusion 102, and the negative electrode column is arranged on the other protrusion 102. The two protrusions 102 can be arranged at intervals on one side or in the middle of the first surface 103, or the two protrusions 102 can be arranged on both sides of the first surface 103. The present application does not impose any special restrictions on the arrangement position of the protrusions 102 on the surface of the battery cell 10.

[0268] Specifically, the first region 1031 may be located in the middle of the first surface 103. The plurality of battery cells 10 are arranged at least along the second direction Y, the first region 1031 and the protrusion 102 both extend along the second direction Y, and the second regions 1032 on both sides of the first region 1031 in the third direction Z may be provided with heat exchange components 14.

[0269] The first region 1031 may be located on one side of the first surface 103 in the third direction Z. The plurality of battery cells 10 are arranged at least along the second direction Y, the first region 1031 and the protrusion 102 both extend along the second direction Y, and the heat exchange assembly 14 may be disposed in the second region 1032 located on the other side of the third direction Z of the first surface 103 .

[0270] The two first regions 1031 may be located on both sides of the first surface 103 in the third direction Z. A protrusion 102 is disposed in each first region 1031. The plurality of battery cells 10 are arranged at least along the second direction Y, the first regions 1031 and the protrusions 102 both extend along the second direction Y, and the heat exchange assembly 14 may be disposed in the second region 1032 between the two first regions 1031.

[0271] Since at least two protrusions 102 are provided, and the positive electrode column and the negative electrode column are respectively provided on different protrusions 102, on the one hand, it is beneficial to reduce the volume of a single protrusion 102, making the structure more compact, which is beneficial to reducing the volume of the battery; on the other hand, there is a large distance between the positive electrode column and the negative electrode column, so that the two can be relatively independent and do not interfere with each other, reducing the risk of short circuit between the two.

[0272] In some embodiments, the length direction of the first surface 103 and the length direction of the protrusion 102 are consistent with the third direction Z. Along the third direction Z, the length of the protrusion 102 accounts for 10% to 30% of the length of the battery cell 10 .

[0273] Along the third direction Z, since the ratio of the length of the protrusion 102 to the length of the battery cell 10 is greater than or equal to 10%, the positive pole and the negative pole are arranged on the same protrusion 102 with a sufficient safety distance between them, reducing the risk of short circuit between the two. Along the third direction Z, since the ratio of the length of the protrusion 102 to the length of the battery cell 10 is less than or equal to 30%, no less than 70% of the length of the battery cell 10 along the third direction Z can be reserved for the heat exchange assembly 14, providing sufficient installation space for the heat exchange assembly 14.

[0274] Furthermore, if the pole 101 is disposed on the first surface 103 , the area of ​​the pole 101 occupies 10% to 30% of the area of ​​the first surface 103 ; if the pole 101 is disposed on the protrusion 102 , the area of ​​the protrusion 102 occupies 10% to 30% of the area of ​​the first surface 103 .

[0275] In some embodiments, Figure 2 , Figure 3 , Figure 5 , Figure 6 , Fig.14 , Fig.15 , Fig. 20 , Fig.21 , Fig.24 and Fig.25 As shown, along the third direction Z, the distance between the center point of the protrusion 102 and the center point of the first surface 103 is 0% of the length of the battery cell 10, or the distance between the center point of the protrusion 102 and the center point of the first surface 103 is in the range of 45% to 47.5% of the length of the battery cell 10.

[0276] Optionally, along the third direction Z, the distance between the center point of the protrusion 102 and the center point of the first surface 103 is 0% of the length of the battery cell 10. In other words, the protrusion 102 is disposed in the middle of the first surface 103. The plurality of battery cells 10 are arranged at least along the second direction Y, and the protrusion 102 extends along the second direction Y. The protrusion 102 divides the accommodation cavity space on the first surface 103 into two spaces, which are of similar size and sufficient to accommodate the heat exchange assembly 14.

[0277] Also optionally, along the third direction Z, the distance between the center point of the protrusion 102 and the center point of the first surface 103 is in the range of 45% to 47.5% of the length of the battery cell 10. In other words, one protrusion 102 is arranged on one side of the third direction Z of the first surface 103, or two protrusions 102 are respectively arranged on both sides of the third direction Z of the first surface 103. A plurality of battery cells 10 are arranged at least along the second direction Y, and the protrusion 102 extends along the second direction Y. If one protrusion 102 is arranged on one side of the third direction Z of the first surface 103, the heat exchange component 14 can be arranged in the accommodation cavity space on the other side of the third direction Z of the first surface 103; if two protrusions 102 are respectively arranged on both sides of the third direction Z of the first surface 103, the heat exchange component 14 can be arranged in the accommodation cavity space between the two protrusions 102.

[0278] Along the third direction Z, since the distance between the center point of the protrusion 102 and the center point of the first surface 103 is 0% of the length of the battery cell 10, sufficient space is left on both sides of the protrusion 102 in the third direction Z to set the heat exchange component 14. Along the third direction Z, since the distance between the center point of the protrusion 102 and the center point of the first surface 103 is in the range of 45% to 47.5% of the length of the battery cell 10, sufficient space is left on one side of the protrusion 102 to set the heat exchange component 14.

[0279] In some embodiments, Fig.21 As shown, along the first direction X, the height of the pole 101 provided on the protrusion 102 from the first surface 103 of the battery is greater than or equal to the height of the heat exchange component 14, and a gap is left between the protrusion 102, the pole 101, the electrical kit 13 and the inner wall surface of the boss 111.

[0280] Optionally, along the first direction X, the height of the protrusion 102 from the first surface 103 of the battery can be greater than or equal to the height of the heat exchange assembly 14, and the pole 101 is arranged on a side surface of the protrusion 102 away from the battery cell 10, so that the pole 101 is spatially separated from the heat exchange assembly 14, thereby reducing the risk of the pole 101 and the heat exchange assembly 14 being connected and conducting electricity.

[0281] Also optionally, along the first direction X, the height of the protrusion 102 from the first surface 103 of the battery may not exceed the height of the heat exchange component 14 , but the height of the pole 101 provided on the protrusion 102 from the first surface 103 of the battery exceeds the height of the heat exchange component 14 .

[0282] Along the first direction X, the sum of the length of the protrusion 102, the length of the pole 101 and the length of the electrical kit 13 is smaller than the distance between the inner wall surface of the boss 111 and the first surface 103, so that a gap is left between the protrusion 102, the pole 101 and the electrical kit 13 and the inner wall of the boss 111, thereby reducing the probability that the boss 111 is deformed by the pressure in the first direction X and damages the protrusion 102, the pole 101 and the electrical kit 13 in the accommodating portion.

[0283] As a result, the protrusion 102 , the pole 101 , and the electrical assembly 13 are not pressed by the inner wall surface of the boss 111 when they are placed in the receiving portion.

[0284] In some embodiments, Figure 26 to Figure 28 As shown, the receiving box 11 is provided with a through hole 113 that opens the first area 1031 to the outside, and a detachable closing cover 112 is provided at the through hole 113, and the projection of the through hole 113 along the first direction X has an overlapping portion with the projection of the first area 1031 along the first direction X.

[0285] A through hole 113 is provided through the box wall of the storage box 11, and the through hole 113 enables the storage chamber to communicate with the outside. A detachable closing cover 112 is provided at the through hole 113, and the closing cover 112 is installed on the storage box 11 and covers the through hole 113. The through hole 113 is provided corresponding to at least a portion of the first area 1031, so that the projection of the through hole 113 along the first direction X and the projection of the first area 1031 along the first direction X have an overlapping portion, so as to facilitate the maintenance of at least a portion of the first area 1031 through the through hole 113.

[0286] Optionally, a through hole 113 is provided on a wall surface of the boss 111 away from the battery cell 10 , and the through hole 113 connects the accommodation portion with the outside, exposing components such as the pole 101 and the busbar 12 accommodated in the boss 111 to the outside for easy maintenance.

[0287] Since the storage box 11 is provided with a through hole 113, the inside of the battery can be connected to the outside world, so the maintenance personnel can perform maintenance inside the battery through the through hole 113. By detachably installing the closing cover 112 at the through hole 113, the closing cover 112 can close the through hole 113 when installed at the through hole 113, and isolate the storage chamber from the outside world, so that the battery cell 10 can work in a stable environment; when the closing cover 112 is removed from the through hole 113, the inside of the battery is connected to the outside world through the through hole 113, so as to be used for maintenance of the inside of the battery. Since the projection of the through hole 113 along the first direction X and the projection of the first area 1031 along the first direction X have an overlapping part, the maintenance personnel can directly inspect at least part of the pole 101 through the through hole 113.

[0288] In some embodiments, Fig. 27 and Fig.28 As shown, a sealing member 114 is provided around the through hole 113 , and the sealing member 114 is used to seal between the through hole 113 and the closing cover 112 .

[0289] The sealing member 114 is made of an elastic material, such as rubber, and the present application does not impose any special restrictions on this. The sealing member 114 is arranged between the closing cover 112 and the through hole 113, and the sealing member 114 is arranged around the edge of the through hole 113. When the closing cover 112 closes the through hole 113, the sealing member 114 is pressed tightly to reduce the gap between the closing cover 112 and the through hole 113.

[0290] Thus, the closing cover 112 and the through hole 113 can maintain a relatively tight sealing effect, preventing external dust and liquid from entering the accommodation cavity and damaging the battery cell 10 .

[0291] In some embodiments, Figure 26 to Figure 28 As shown, the closing cover 112 is configured as a flat plate, or the closing cover 112 is configured as a protrusion relative to the surface of the receiving box 11 , and the closing cover 112 forms a receiving portion on the side facing the battery cell 10 , and at least a portion of the pole 101 is located in the receiving portion via the through hole 113 .

[0292] Optionally, the closing cover 112 is configured in a flat plate shape. The closing cover 112 is closely fitted to the surface of the box wall receiving box 11, and completely covers the through hole 113, so that the through hole 113 is sealed. After the closing cover 112 closes the through hole 113, there is a gap between the pole 101 and the closing cover 112, that is, the length of the pole 101 in the first direction X is less than the distance between the first surface 103 and the closing cover 112, so that the pole 101 is received in the receiving cavity.

[0293] Also optionally, the closing cover 112 is configured to be convex relative to the surface of the receiving box 11. The closing cover 112 protrudes 102 in the direction away from the battery cell 10, and the closing cover 112 forms a receiving portion on the side facing the battery cell 10. The receiving cavity can be connected to the receiving portion through the through hole 113, and at least a part of at least one of the pole 101, the busbar 12 and the electrical kit 13 can be received in the receiving portion.

[0294] By forming the closing cover 112 in a flat plate shape, the structure is simple, and the processing of the closing cover 112 is facilitated. Since the closing cover 112 is formed in a convex shape relative to the surface of the storage box 11, and a storage portion is formed on the side of the closing cover 112 facing the battery cell 10, at least a portion of the pole 101 is placed in the storage portion of the closing cover 112, thereby reducing the space occupied by the pole 101 in the storage cavity, which helps to reduce the volume of the storage box 11.

[0295] In some embodiments, Fig. 27 and Fig.28As shown, the through hole 113 is opened on the wall surface of the boss 111 facing the battery cell 10 .

[0296] A through hole 113 is formed on a wall surface of the boss 111 away from the battery cell 10, and a convex closing cover 112 can be provided at the through hole 113. The receiving portion of the boss 111 and the receiving portion of the closing cover 112 form a larger receiving space in the first direction X to accommodate more components such as the pole 101.

[0297] Optionally, the inner wall surface of the closing cover 112 surrounds and is in close contact with the outer surface of the boss 111, and a sealing member 114 may be provided between the inner wall surface of the closing cover 112 and the outer surface of the boss 111, so that at least a portion of the boss 111 is received in the receiving portion of the closing cover 112. In the first direction X, the distance between the inner wall surface of the closing cover 112 and the first surface 103 is greater than the distance between the surface of the boss 111 away from the battery cell 10 and the first surface 103, so that the components received in the boss 111 can be received in the closing cover 112 through the through hole 113.

[0298] Optionally, the closing cover 112 is disposed on the surface of the boss 111 away from the battery cell 10. In the first direction X, the receiving portion of the boss 111 and the receiving portion of the closing cover 112 overlap in the first direction X to form a larger receiving space to accommodate more components such as the pole 101.

[0299] Thus, the receiving part of the closing cover 112 and the receiving part of the boss 111 overlap each other to form a larger space, which can accommodate more poles 101 and even electrical kits 13, further reducing the space occupied by the portion protruding from the surface of the battery cell 10. The through hole 113 connects the receiving part of the boss 111 with the outside world, and maintenance personnel can inspect the poles 101 and other components in the receiving part through the through hole 113.

[0300] In a second aspect, the present application also provides an electrical device, including a battery, and the battery serves as a power source for the electrical device.

[0301] Since the electrical device includes a battery that fully utilizes the internal space of the housing box 11, the space reserved for the battery in the electrical device can be reduced, or the overall energy of the battery can be increased while maintaining the volume, thereby helping to increase the degree of freedom in arranging the battery and its peripheral structures in the electrical device, and helping to improve the battery life / standby capability of the electrical device.

[0302] In some embodiments, Figure 29 to Figure 32As shown, a plurality of battery cells 10 are arranged along a second direction Y to form a battery cell queue, the second direction Y is consistent with the width direction of the first surface 103, the surface of the receiving box 11 is configured to have a boss 111 extending along the second direction Y, the boss 111 is formed by the surface of the receiving box 11 bulging along the first direction X in a direction away from the battery cell 10, the electrical device is a vehicle, the vehicle further includes at least one seat 15, the battery is located on one side of the seat 15 along the vehicle up-down direction X and the through hole 113 of the battery faces the other side of the vehicle up-down direction X, the vehicle up-down direction X is consistent with the first direction X, the first direction X is perpendicular to the second direction Y, and the projection of the seat 15 on the battery along the vehicle up-down direction X is located outside the range of the boss 111.

[0303] The vehicle up-down direction X refers to the direction perpendicular to the plane on which the vehicle travels.

[0304] The first direction X refers to a direction perpendicular to any surface of the battery cell 10. In this embodiment, the first direction X is consistent with the up-down direction X of the vehicle.

[0305] The second direction Y is a direction consistent with the width direction of the first surface 103 and is perpendicular to the first direction X.

[0306] Along the vehicle up-down direction X, the battery is installed on the lower side of the seat 15, and a boss 111 is constructed on the surface of the storage box 11 close to the seat 15, that is, the boss 111 is constructed on the upper surface of the storage box 11, and the boss 111 is formed by protruding in the direction away from the battery cell 10. The boss 111 has a housing portion to accommodate components protruding from the surface of the battery cell 10. The battery cells 10 in the storage cavity are arranged along the second direction Y to form a battery cell queue, and the boss 111 extends along the second direction Y. The housing portion of the boss 111 can at least accommodate the pole 101. In order to avoid the boss 111 and the seat 15 from interfering with each other, the projection of the seat 15 on the battery along the vehicle up-down direction X is arranged outside the range of the boss 111.

[0307] Optionally, along the vehicle up-down direction X, the upper side wall of the storage box 11 constitutes the vehicle's floor, the seat 15 is arranged on the upper side of the floor, and the storage cavity is located on the lower side of the floor. Optionally, the vehicle also includes a floor. Along the vehicle up-down direction X, the seat 15 is arranged on the upper side of the floor, the storage box 11 is arranged on the lower side of the floor, and a protrusion toward the upper side is constructed on the floor corresponding to the boss 111 to accommodate the boss 111.

[0308] Since the surface of the storage box 11 is provided with a boss 111, the boss 111 can provide additional space to accommodate the components in the battery, which is helpful to reduce the space required for the battery, or to increase the overall energy of the battery while maintaining the volume, thereby helping to improve the vehicle's range. Since the projection of the seat 15 on the battery along the vehicle's vertical direction X is outside the range of the boss 111, the seat 15 and the boss 111 make full use of the same horizontal space, thereby improving the space utilization rate in the vehicle and having little influence on each other. Since the battery is located on one side of the seat 15 along the vehicle's vertical direction X, and the through hole 113 of the battery faces the other side of the vehicle's vertical direction X, the battery can be inspected and repaired in the vehicle without removing the battery, saving time and effort.

[0309] In some embodiments, see Figure 29 to Figure 32 The vehicle includes at least one seat row, the seat row includes at least two seats 15 arranged along the left-right direction Z of the vehicle, the left-right direction Z of the vehicle is a third direction Z, the third direction Z is perpendicular to both the first direction X and the second direction Y, along the left-right direction Z of the vehicle, the boss 111 is located between adjacent seats 15 in the same seat row, and / or the boss 111 is located on both sides of the same seat row in the left-right direction Z of the vehicle.

[0310] The third direction Z refers to a direction consistent with the length direction of the first surface 103 .

[0311] The left-right direction Z of the vehicle refers to the direction parallel to the plane on which the vehicle is traveling, and is consistent with the third direction Z.

[0312] There are multiple seats 15, at least two seats 15 are arranged at intervals along the left-right direction Z of the vehicle, the seats 15 arranged along the left-right direction Z of the vehicle are regarded as a seat row, and at least one seat row is arranged at intervals along the second direction Y. Along the left-right direction Z of the vehicle, the boss 111 is located between adjacent seats 15 in the same seat row, and / or the boss 111 is located on both sides of the same seat row in the left-right direction Z of the vehicle.

[0313] Thus, the seat 15 is not affected by the protrusion 102 when adjusting forward and backward. In addition, the setting position of the boss 111 is staggered with the user's use position, which reduces the interference of the boss 111 on the user's normal activities in the car, improves the user experience, and improves the space utilization rate in the vehicle.

[0314] In some embodiments, the battery cells 10 are arranged in a battery cell array along the second direction Y and the third direction Z. When the number of battery cells 10 arranged along the third direction Z is greater than the number of battery cells 10 arranged along the second direction Y, the number of battery cells 10 arranged along the second direction Y does not exceed 2; when the number of battery cells 10 arranged along the third direction Z is less than the number of battery cells 10 arranged along the second direction Y, the number of battery cells 10 arranged along the third direction Z does not exceed 4.

[0315] As a result, the size of the battery does not exceed the size of a conventional vehicle chassis, so that the battery can be adapted to most vehicles.

[0316] In a third aspect, the present application also provides an energy storage device, comprising a battery as described above, wherein the battery is configured to store electrical energy and provide electrical energy.

[0317] Since the energy storage device includes a battery that fully utilizes the internal space of the containing box 11, the space reserved for the battery can be reduced, or the overall energy of the battery can be increased while maintaining the volume, thereby helping to reduce the space required for the energy storage device or increase the energy storage capacity.

[0318] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. A battery, characterized in that: include: At least one battery cell, each of the battery cells having a pole on a first surface of one side in a first direction; A storage box, wherein a storage cavity is provided in the storage box, and each of the battery cells is stored in the storage cavity; a heat exchange component, disposed on the first surface of the battery cell, for exchanging heat with each of the battery cells, A projection of the pole along the first direction on the first surface and a projection of the heat exchange component along the first direction on the first surface do not overlap with each other.

2. The battery according to claim 1, characterized in that The first surface has a first area and a second area, the pole is arranged in the first area, and the heat exchange component is arranged in the second area.

3. The battery according to claim 2, characterized in that The number of the second regions is two, and the two second regions are respectively located on both sides of the first region.

4. The battery according to claim 2, characterized in that The number of the first regions is two, and the second region is located between the two first regions.

5. The battery according to claim 2, characterized in that The area of ​​the second region is greater than that of the first region.

6. The battery according to claim 2, characterized in that The plurality of battery cells are arranged at least along a second direction, and the second direction is consistent with a width direction of the first surface. The heat exchange assembly at least partially covers the second region of each of the battery cells.

7. The battery according to any one of claims 1 to 6, characterized in that The heat exchange component comprises: Heat exchange plates; and The adhesive layer includes a first adhesive layer provided on a surface of the heat exchange plate on a side close to the battery cell, The heat exchange plate is bonded to the battery cell through the first bonding layer.

8. The battery according to claim 1, characterized in that The heat exchange component comprises: Heat exchange plates; and The adhesive layer includes a second adhesive layer provided on a surface of a layer of the heat exchange plate that is away from the battery cell, and the heat exchange plate is bonded to the containing box through the second adhesive layer.

9. The battery according to claim 7, characterized in that The heat exchange plate is configured to be in a flat plate shape, or the heat exchange plate is configured to be in a shape that undulates along the first direction.

10. The battery according to claim 8, characterized in that The heat exchange plate is configured to be compressible along the first direction.

11. The battery according to any one of claims 2 to 6, characterized in that The heat exchange assembly located in the second area is in contact with the first surface of the battery and the inner wall surface of the containing box respectively.

12. The battery according to any one of claims 1 to 6 and 8, characterized in that: In the accommodating cavity, the battery cell is a long-blade battery cell, and a plurality of the long-blade battery cells are arranged along a second direction to form a battery cell group, and the second direction is consistent with the width direction of the first surface, In the battery cell group, the poles are arranged along the second direction, and the heat exchange assembly extends along the second direction.

13. The battery according to any one of claims 1 to 6 and 8, characterized in that: In the accommodating cavity, the battery cell is a short-blade battery cell, a plurality of battery cell units are arranged along a second direction to form a battery cell group, the battery cell unit includes two or more short-blade battery cells arranged in parallel along a third direction, the second direction is consistent with the width direction of the first surface, and the third direction is consistent with the length direction of the first surface, Two adjacent short-blade battery cells along the third direction are arranged in parallel with the poles close to each other or in parallel with the poles far away from each other. In the battery cell group, the poles are arranged along the second direction, and the heat exchange assembly extends along the second direction.

14. The battery according to claim 2, characterized in that The receiving box forms a receiving portion on a side facing the battery cell, and the pole is at least partially received in the receiving portion.

15. The battery according to claim 14, characterized in that A busbar is disposed in the first region, and the busbar is used to connect the poles of the adjacent battery cells. The busbar is at least partially accommodated in the accommodation portion.

16. The battery according to claim 14, characterized in that The battery further includes an electrical kit, wherein the electrical kit is at least partially disposed in the first area, and the electrical kit in the first area is at least partially accommodated in the accommodation portion.

17. The battery according to claim 16, characterized in that The electrical kit includes at least one of a sampling structure, a battery management system, a relay, and a high voltage power distribution unit.

18. The battery according to claim 16, characterized in that The receiving box has a boss, which is formed by the receiving box bulging along the first direction toward the direction away from the battery cell. The boss forms the receiving portion on the side facing the battery cell, and the pole and at least a portion of the electrical kit are located in the receiving portion and a gap is left between the inner wall at the boss.

19. The battery according to claim 18, characterized in that The length direction of the boss is consistent with the second direction, the length of the boss along the second direction is greater than or equal to the length of the accommodating cavity along the second direction, and the second direction is consistent with the width direction of the first surface, or, The length direction of the boss is consistent with the third direction, the length of the boss along the third direction is greater than or equal to the length of the accommodating cavity along the third direction, and the third direction is consistent with the length direction of the first surface.

20. The battery according to claim 19, characterized in that The length of the boss along the second direction or the third direction is not greater than 500 mm.

21. The battery according to claim 20, characterized in that A length of the boss along the second direction or the third direction is in a range of 50 mm to 300 mm.

22. The battery according to any one of claims 14 to 21, characterized in that A protrusion is provided in the first region of the battery cell, the pole is provided on a surface of the protrusion on one side facing the first direction, and at least a portion of the protrusion is located in the accommodation portion.

23. The battery according to claim 22, characterized in that The poles include a positive pole and a negative pole, and the positive pole and the negative pole are arranged on the protrusion at intervals.

24. The battery according to claim 23, characterized in that The number of the protrusions is one, the positive electrode column and the negative electrode column are spaced apart from each other on the protrusions, the line connecting the positive electrode column and the negative electrode column is parallel to the length direction of the first surface, or the line connecting the positive electrode column and the negative electrode column is parallel to the width direction of the first surface.

25. The battery according to claim 23, characterized in that At least two of the protrusions are arranged at intervals from each other, the positive electrode column is arranged on one of the protrusions, and the negative electrode column is arranged on the other of the protrusions.

26. The battery according to claim 22, characterized in that The length direction of the first surface and the length direction of the protrusion are consistent with the third direction, Along the third direction, the length of the protrusion accounts for 10% to 30% of the length of the battery cell.

27. The battery according to claim 26, characterized in that Along the third direction, the distance between the center point of the protrusion and the center point of the first surface is 0% of the length of the battery cell, or the distance between the center point of the protrusion and the center point of the first surface is in the range of 45% to 47.5% of the length of the battery cell.

28. The battery according to claim 22, characterized in that The housing box has a boss, and the boss is formed by the housing box bulging along the first direction toward the direction away from the battery cell. Along the first direction, the height of the pole arranged on the boss from the first surface of the battery is greater than or equal to the height of the heat exchange component, and a gap is left between the boss, the pole, the electrical kit and the inner wall surface of the boss. Wherein, the electrical kit includes at least one of a sampling structure, a battery management system, a relay and a high-voltage distribution unit.

29. The battery according to any one of claims 14 to 17, characterized in that The storage box is provided with a through hole for opening the first area to the outside, and a detachable closing cover is provided at the through hole. A projection of the through hole along the first direction and a projection of the first region along the first direction have an overlapping portion.

30. The battery according to claim 29, characterized in that A sealing member is arranged around the through hole, and is used for sealing between the through hole and the closing cover.

31. The battery according to claim 29, characterized in that The closure cover is formed in a flat plate shape, or The closing cover is configured to be convex relative to the surface of the receiving box, and the closing cover forms the receiving portion on a side facing the battery cell, and at least a portion of the pole is located in the receiving portion via the through hole.

32. The battery according to claim 29, characterized in that The receiving box has a boss, and the boss is formed by the receiving box bulging along the first direction toward a direction away from the battery cell. The through hole is formed on a wall surface of the boss facing the battery cell.

33. An electrical device, characterized in that: The invention comprises the battery according to any one of claims 1 to 32, wherein the battery serves as a power source for the electrical device.

34. The electrical device according to claim 33, characterized in that: The plurality of battery cells are arranged along a second direction to form a battery cell queue, and the second direction is consistent with the width direction of the first surface. The surface of the storage box is configured to have a boss extending along the second direction, and the boss is formed by the surface of the storage box bulging along the first direction toward a direction away from the battery cell. The electrical device is a vehicle, and the vehicle further comprises at least one seat, the battery is located on one side of the seat along the up-down direction of the vehicle, and the through hole of the battery faces the other side of the up-down direction of the vehicle, the up-down direction of the vehicle is consistent with the first direction, and the first direction is perpendicular to the second direction, A projection of the seat on the battery along the vertical direction of the vehicle is located outside the range of the boss.

35. The electrical device according to claim 34, characterized in that: The vehicle includes at least one seat row, the seat row includes at least two seats arranged along the left-right direction of the vehicle, the left-right direction of the vehicle is a third direction, and the third direction is perpendicular to both the first direction and the second direction. Along the left-right direction of the vehicle, the boss is located between adjacent seats in the same seat row, and / or the boss is located on both sides of the same seat row in the left-right direction of the vehicle.

36. The electrical device according to claim 35, characterized in that: The battery cells are arranged in a battery cell array along the second direction and the third direction, In the case where the number of the battery cells arranged along the third direction is greater than the number of the battery cells arranged along the second direction, the number of the battery cells arranged along the second direction does not exceed 2; In a case where the number of the battery cells arranged along the third direction is less than the number of the battery cells arranged along the second direction, the number of the battery cells arranged along the third direction does not exceed four.

37. An energy storage device, characterized in that: A battery comprising the battery of any one of claims 1 to 32, wherein the battery is configured to store electric energy and to provide electric energy.

Images