Battery and vehicle

Abstract

The utility model relates to the technical field of new energy, and provides a battery and a vehicle, the battery comprises a shell, a plurality of battery monomer groups and a battery management system, the plurality of battery monomer groups are arranged in the shell at intervals in the left-right direction, the battery monomer groups extend in the front-back direction, and a heat dissipation air duct is arranged between every two adjacent battery monomer groups; an installation cavity extending in the front-back direction is formed in the shell, the installation cavity and the heat dissipation air channel are arranged in the left-right direction, and the battery management system is installed in the installation cavity. According to the battery, the mounting cavity and the heat dissipation air duct are arranged in the left-right direction, and the battery management system is mounted in the mounting cavity and cannot shield the air inlet or the air outlet of the heat dissipation air duct, so that the problem that the battery management system affects ventilation of the heat dissipation air duct is solved; in addition, the battery management system is located in the shell, and the shell can be used for effectively protecting the battery management system.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a battery and a vehicle. Background Art

[0002] During the battery charging and discharging process, the battery cells will generate a lot of heat. To ensure the normal use of the battery, it is usually necessary to open a heat dissipation duct on the battery shell so that the heat generated by the battery cells can be quickly dissipated to the outside of the shell through the heat dissipation duct.

[0003] The battery also includes a BMS (Battery Management System), which is used to monitor the voltage, current, temperature and other parameters of the battery cells. Currently, the BMS is set at one end of the housing along the extension direction of the heat dissipation duct, which will block the air inlet or outlet of the heat dissipation duct, causing the BMS to affect the ventilation of the heat dissipation duct, which is not conducive to the heat dissipation of the battery. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a battery and a vehicle to solve the problem that the BMS affects the ventilation of the heat dissipation duct.

[0005] An embodiment of the first aspect of the present application proposes a battery, comprising a shell, a plurality of battery cell groups and a battery management system, wherein the plurality of battery cell groups are arranged in the shell at intervals along the left-right direction, the battery cell groups extend in the front-to-back direction, and a heat dissipation duct is provided between two adjacent battery cell groups; an installation cavity extending in the front-to-back direction is provided in the shell, the installation cavity and the heat dissipation duct are arranged along the left-to-right direction, and the battery management system is installed in the installation cavity.

[0006] The battery provided in the embodiment of the present application is provided with a heat dissipation duct between two battery cell groups so that the heat generated by the battery cells can be quickly dissipated to the outside of the housing through the heat dissipation duct, thereby ensuring the normal use of the battery during the charging and discharging process. Since the installation cavity and the heat dissipation duct are arranged in the left-right direction, the battery management system installed in the installation cavity will not block the air inlet or outlet of the heat dissipation duct, thus solving the problem of the battery management system affecting the ventilation of the heat dissipation duct, and facilitating the heat dissipation of the battery. Moreover, the battery management system is inside the housing, and the housing can be used to effectively protect the battery management system.

[0007] In some embodiments, the shell includes a bottom plate and a plurality of ribs arranged on the bottom plate, the plurality of ribs extend along the front-to-back direction, two adjacent ribs and the bottom plate form a placement cavity extending along the front-to-back direction, and the battery cell group is placed in the placement cavity; the heat dissipation duct is formed in the ribs.

[0008] In some embodiments, the shell includes a left side plate and a right side plate; the leftmost rib plate forms the left side plate, and / or the rightmost rib plate forms the right side plate.

[0009] In some embodiments, the installation cavity is located in the middle of the shell in the left-right direction, and a first reinforcing rib is provided on the inner side of the bottom wall of the installation cavity.

[0010] In some embodiments, the shell includes a front side plate and a rear side plate, the installation cavity extends from the front side plate to the rear side plate in the front-to-back direction, at least one battery cell group is provided in the installation cavity, and the battery cell group in the installation cavity and the battery management system are arranged along the front-to-back direction.

[0011] In some embodiments, the shell includes a corrugated plate having a plurality of first concave cavities opening upward and a plurality of second concave cavities opening downward; one of the first concave cavities constitutes the installation cavity, the remaining first concave cavities constitute placement cavities for placing the battery cell group, and the second concave cavities constitute the heat dissipation duct.

[0012] In some embodiments, the battery further includes a plurality of anti-collision convex portions, at least some of which are disposed on the lower side of the shell and below the battery cell group.

[0013] In some embodiments, the anti-collision protrusion extends along the front-to-back direction, and a liquid cooling channel is provided in the anti-collision protrusion.

[0014] In some embodiments, a second reinforcing rib is provided in the liquid cooling channel.

[0015] In some embodiments, a main power connector is provided on the shell, and a positive connector and a negative connector connecting the battery cell group and the main power connector are provided in the shell, and the positive connector and the negative connector are located in the installation cavity and above the battery management system.

[0016] A second aspect of the present application provides a vehicle, comprising the battery as described in the first aspect.

[0017] The vehicle adopts all the embodiments of the above-mentioned battery, and thus has at least all the beneficial effects of the above-mentioned embodiments, which will not be described one by one here.

[0018] 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

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or conventional technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 is a top view of a battery provided in some embodiments of the present application;

[0021] Figure 2 is a front view of a battery provided in some embodiments of the present application;

[0022] Figure 3 yes Figure 2 An enlarged view of the battery shown at A;

[0023] Figure 4 is a schematic diagram of the structure of a housing provided in some embodiments of the present application;

[0024] Figure 5 is a schematic diagram of the structure of a battery cell provided in some embodiments of the present application;

[0025] Figure 6 is a schematic diagram of the current direction of a battery provided in some embodiments of the present application;

[0026] Figure 7 It is a schematic diagram of the structure of the corrugated plate provided in some embodiments of the present application.

[0027] The meanings of the marks in the figure are:

[0028] 10. Battery;

[0029] 11. Shell; 111. Front side plate; 112. Rear side plate; 113. Left side plate; 114. Right side plate; 115. Bottom plate; 116. Rib plate; 1161. Cooling duct; 117. Installation cavity; 1171. First reinforcing rib; 118. Placement cavity; 119. Corrugated plate;

[0030] 12. Battery cell group; 121. Battery cell; 1211. Battery cell positive electrode; 1212. Battery cell negative electrode;

[0031] 13. Battery management system;

[0032] 14. Anti-collision convex part; 141. Liquid cooling channel; 142. Second reinforcing rib;

[0033] 15. Main power connector;

[0034] 16. Signal line connector;

[0035] 17. Positive electrode connector;

[0036] 18. Negative electrode connector;

[0037] 19. Connecting piece. DETAILED DESCRIPTION

[0038] 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.

[0039] 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" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0040] In the description of the embodiments of the present application, the technical terms "first", "second", 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.

[0041] 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.

[0042] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. 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.

[0043] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0044] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientations or positional relationships 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 and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0045] 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.

[0046] At present, the battery management system is arranged at one end of the housing along the extension direction of the heat dissipation duct, which will block the air inlet or outlet of the heat dissipation duct, causing the battery management system to affect the ventilation of the heat dissipation duct, which is not conducive to the heat dissipation of the battery. In order to avoid the battery management system blocking the air inlet or outlet of the heat dissipation duct, the existing battery sets the battery management system on the upper cover of the housing. However, this causes the upper cover surface of the housing to be partially protruding, which is not conducive to installing the battery on the vehicle frame.

[0047] In order to solve the problem that the BMS affects the ventilation of the heat dissipation duct, the present application proposes a battery and a vehicle.

[0048] The first embodiment of the present application provides a battery, which refers to a battery cell plus a battery management system, a thermal management system and other structures to form a whole, and the battery is used in electrical equipment, such as vehicles. Figure 1 , Figure 2 and Figure 5 The battery 10 includes a housing 11, a plurality of battery cell groups 12, and a battery management system 13. The plurality of battery cell groups 12 are arranged in the housing 11 at intervals along the left-right direction, the battery cell groups 12 extend along the front-back direction, and a heat dissipation duct 1161 is provided between two adjacent battery cell groups 12; a mounting cavity 117 extending along the front-back direction is provided in the housing 11, the mounting cavity 117 and the heat dissipation duct 1161 are arranged along the left-right direction, and the battery management system 13 is installed in the mounting cavity 117.

[0049] It is understood that the housing 11 can be an independent housing, and the battery cell group 12 is installed in the housing 11 to form a battery pack, and the battery pack is installed on the frame; or the housing 11 can be a part of the frame, that is, the battery cell 121 is directly installed on the frame. Among them, a cover plate can be fixed on the top of the housing 11 to cover the housing 11 and protect the battery cell group 12 inside the housing 11.

[0050] The left-right direction is perpendicular or nearly perpendicular to the front-back direction. Figure 1 The X direction is shown, and the left and right directions are Figure 1 The Y direction is shown, and the up and down directions are Figure 4 The Z direction is shown.

[0051] It can be understood that the front-to-back direction can be the same as the driving direction of the vehicle. In this case, natural wind can be used to enter the heat dissipation duct 1161 for heat dissipation, or a cooling fan can be used to blow air into the heat dissipation duct 1161 for heat dissipation, or a cooling fan can be used to discharge the air in the heat dissipation duct 1161 for heat dissipation; the front-to-back direction can also intersect with the driving direction of the vehicle, for example, the front-to-back direction is perpendicular to the driving direction. In this case, a cooling fan can be used to blow air into the heat dissipation duct 1161 for heat dissipation, or a cooling fan can be used to discharge the air in the heat dissipation duct 1161 for heat dissipation.

[0052] Multiple battery cell groups 12 are arranged in the housing 11 at intervals along the left-right direction, that is, multiple battery cell groups 12 are arranged at intervals along the Y direction. It can be understood that the battery cell group 12 may include multiple battery cells 121, and the multiple battery cells 121 of the same battery cell group 12 are arranged along the front-to-back direction, that is, the multiple battery cells 121 of the same battery cell group 12 are arranged along the X direction; or, the battery cell group 12 may also include only one battery cell 121, for example, the battery cell 121 is a blade battery extending along the front-to-back direction. Among them, the battery cell 121 is the basic unit of charging and discharging.

[0053] It should be noted that the number of battery cell groups 12 and the number of battery cells 121 in the same battery cell group 12 can be set according to the size of the housing 11 and the size of the battery cell 121; wherein the number of battery cells 121 included in each battery cell group 12 can be the same or different.

[0054] A heat dissipation duct 1161 is provided between any two adjacent battery cell groups 12. It can be understood that a heat dissipation duct 1161 is provided between any two adjacent battery cell groups 12, that is, the battery cell groups 12 and the heat dissipation duct 1161 are alternately arranged in the Y direction, so that the left and right sides of the battery cell groups 12 can both dissipate heat to achieve sufficient heat dissipation of each battery cell group 12; or, one heat dissipation duct 1161 is provided between some two adjacent battery cell groups 12, and two heat dissipation ducts 1161 are provided between some two adjacent battery cell groups 12; or, one heat dissipation duct 1161 is provided between some two adjacent battery cell groups 12, and no heat dissipation duct 1161 is provided between some two adjacent battery cell groups 12.

[0055] The installation cavity 117 is used to install the battery management system 13, which is used to monitor and control parameters such as voltage, current and temperature of the battery cells 121 to prevent the battery cells 121 from being overcharged and over-discharged, thereby increasing the service life.

[0056] The installation cavity 117 extends along the front-to-back direction, that is, the installation cavity 117 extends along the X direction; the installation cavity 117 and the heat dissipation duct 1161 are arranged along the left-to-right direction, that is, the installation cavity 117 and the heat dissipation duct 1161 are arranged along the Y direction.

[0057] The battery 10 provided in the embodiment of the present application is provided with a heat dissipation duct 1161 between two battery cell groups 12, so that the heat generated by the battery cell 121 can be quickly dissipated to the outside of the housing 11 through the heat dissipation duct 1161, thereby ensuring the normal use of the battery 10 during the charging and discharging process. Since the installation cavity 117 and the heat dissipation duct 1161 are arranged along the Y direction, the battery management system 13 installed in the installation cavity 117 will not block the air inlet or outlet of the heat dissipation duct 1161, thereby solving the problem that the battery management system 13 affects the ventilation of the heat dissipation duct 1161, and is beneficial to the heat dissipation of the battery 10. Moreover, the battery management system 13 is in the housing 11, and the housing 11 can be used to effectively protect the battery management system 13.

[0058] It should be noted that the electrical system of the battery 10 may also be disposed in the mounting cavity 117 , and the electrical system includes relays, contactors, fuses, sensors, and pre-charging resistors, etc.

[0059] Please also refer to Figure 1 and Figure 4 In some embodiments, the shell 11 includes a bottom plate 115 and a plurality of ribs 116 disposed on the bottom plate 115 , the plurality of ribs 116 extend in the front-to-back direction, two adjacent ribs 116 and the bottom plate 115 form a placement cavity 118 extending in the front-to-back direction, and the battery cell group 12 is placed in the placement cavity 118 ; a heat dissipation duct 1161 is formed in the rib 116 .

[0060] The bottom plate 115 supports the battery cell group 12 . The rib plate 116 is disposed on the upper side of the bottom plate 115 to limit the battery cell group 12 in the left-right direction.

[0061] It can be understood that the rib plate 116 can be integrally formed with the base plate 115, for example, by extrusion; or, the rib plate 116 can be fixed to the base plate 115, for example, by welding, riveting, clamping, fastener connection, interference connection, etc.

[0062] The rib plate 116 has a certain thickness in the left-right direction so that the heat dissipation duct 1161 can be formed in the rib plate 116; wherein, the rib plate 116 is perpendicular to the bottom plate 115. It can be understood that the rib plate 116 can be lower than the battery cell group 12, or higher than the battery cell group 12, or the rib plate 116 can be the same height as the battery cell group 12.

[0063] It can be understood that the rib plate 116 can be formed by extrusion, and the cavity of the rib plate 116 forms the heat dissipation duct 1161; or, the rib plate 116 can include two U-shaped plate segments, and the two U-shaped plate segments are fixed (including but not limited to welding) together to form the heat dissipation duct 1161; the rib plate 116 can include a straight plate segment and a U-shaped plate segment, and the straight plate segment and the U-shaped plate segment are fixed (including but not limited to welding) together to form the heat dissipation duct 1161.

[0064] By providing a plurality of ribs 116 on the bottom plate 115, not only the structural strength of the housing 11 can be improved, but also after the battery cell group 12 is placed in the placement cavity 118 surrounded by two adjacent ribs 116 and the bottom plate 115, the ribs 116 can well limit the battery cell group 12 to ensure the stability of the battery cell group 12 after placement. In addition, the heat dissipation duct 1161 is formed in the ribs 116, so that the heat dissipation duct 1161 is isolated from the placement cavity 118, and impurities such as water vapor and dust in the air entering the heat dissipation duct 1161 are prevented from entering the placement cavity 118 and affecting the battery cell group 12.

[0065] In other embodiments, the rib plate 116 is not provided on the bottom plate 115, and the bottom plate 115 has a plurality of placement grooves, and the plurality of installation grooves extend in the front-to-back direction and are arranged at intervals in the left-to-right direction. The battery cell groups 12 are placed in the placement grooves, and a heat dissipation duct 1161 extending in the front-to-back direction is formed between two adjacent battery cell groups 12; since the air entering the heat dissipation duct 1161 can directly contact the battery cell group 12, the heat dissipation of the battery cell group 12 can be accelerated, and the heat dissipation efficiency can be further improved.

[0066] Please also refer to Figure 1 and Figure 4In some embodiments, the housing 11 includes a left side plate 113 and a right side plate 114 , the leftmost rib plate 116 forms the left side plate 113 , and the rightmost rib plate 116 forms the right side plate 114 .

[0067] The leftmost rib plate 116 forms the left side plate 113 , and the rightmost rib plate 116 forms the right side plate 114 , that is, heat dissipation ducts 1161 are formed in both the left side plate 113 and the right side plate 114 .

[0068] Optionally, the left side plate 113 and the right side plate 114 are of the same height, and the left side plate 113 and the right side plate 114 are higher than the rib plate 116 between the left side plate 113 and the right side plate 114, so that after the upper cover is buckled on the shell 11, there is space above the battery cell group 12 to arrange other components, for example, a connecting piece 19 or a wire connecting two battery cells 121, and for example, cables and lines arranged in the shell 11.

[0069] It can be understood that the left side plate 113 and / or the right side plate 114 can be integrally formed with the bottom plate 115, for example, by extrusion; or, the left side plate 113 and / or the right side plate 114 can be fixed to the bottom plate 115, for example, by welding, riveting, clamping, fastener connection, interference connection, etc.

[0070] By adopting the above technical solution, heat dissipation ducts 1161 are also formed in the left plate 113 and the right plate 114 of the housing 11 to improve the heat dissipation efficiency of the leftmost battery cell group 12 and the rightmost battery cell group 12 .

[0071] In other embodiments, the leftmost rib plate 116 forms the left side plate 113, and the right side plate 114 is a common side plate, that is, the heat dissipation duct 1161 is formed only in the left side plate 113; or, the left side plate 113 is a common side plate, and the rightmost rib plate 116 forms the right side plate 114, that is, the heat dissipation duct 1161 is formed only in the right side plate 114.

[0072] In other embodiments, the left side panel 113 and the right side panel 114 are both common side panels, that is, the heat dissipation duct 1161 is not provided in the left side panel 113 and the right side panel 114 .

[0073] Please refer to Figure 4 In some embodiments, the installation cavity 117 is located in the middle of the shell 11 in the left-right direction, and a first reinforcing rib 1171 is provided on the inner side of the bottom wall of the installation cavity 117 .

[0074] The installation cavity 117 is located in the middle of the housing 11 in the left-right direction, which means that the installation cavity 117 is located at or close to the middle of the housing 11. The installation cavity 117 is surrounded by two ribs 116 and a bottom plate 115.

[0075] The first reinforcing rib 1171 may be a solid structure or a hollow structure. Moreover, the position of the first reinforcing rib 1171 may also be arranged as required, as long as it does not affect the installation of the battery management system 13.

[0076] It can be understood that the first reinforcing rib 1171 can be integrally formed with the base plate 115; alternatively, the first reinforcing rib 1171 can be fixed to the base plate 115, for example, by welding, riveting, clamping, fastener connection, interference connection, etc.

[0077] Typically, the shell 11 of the battery 10 is relatively large in size. By setting the installation cavity 117 in the middle position of the shell 11, the number of battery cell groups 12 on the left and right sides of the installation cavity 117 is made to be basically the same, thereby ensuring the force balance of the shell 11. At the same time, a first reinforcing rib 1171 is provided on the inner side of the bottom wall of the installation cavity 117. The first reinforcing rib 1171 can reinforce the middle position of the shell 11, thereby ensuring the structural strength of the shell 11.

[0078] In addition, bolt holes may also be provided on the bottom wall of the mounting cavity 117 so that the housing 11 can fix the battery 10 on the frame at three positions: the left side, the middle, and the right side, to ensure the stability of the battery 10 being fixed on the frame.

[0079] In other embodiments, the installation cavity 117 is located on the left side of the shell 11 in the left-right direction, for example, the installation cavity 117 is surrounded by the bottom plate 115, the left side plate 113 and the rib plate 116; or, the installation cavity 117 is located on the right side of the shell 11 in the left-right direction, for example, the installation cavity 117 is surrounded by the bottom plate 115, the right side plate 114 and the rib plate 116.

[0080] Please also refer to Figure 1 and Figure 4 In some embodiments, the shell 11 includes a front side plate 111 and a rear side plate 112, and the installation cavity 117 extends from the front side plate 111 to the rear side plate 112 in the front-to-back direction. At least one battery cell group 12 is provided in the installation cavity 117, and the battery cell group 12 in the installation cavity 117 and the battery management system 13 are arranged along the front-to-back direction.

[0081] It can be understood that the front side panel 111 and the rear side panel 112 can be integrally formed with the bottom plate 115, for example, by extrusion; or, the front side panel 111 and the rear side panel 112 can be fixed to the bottom plate 115, for example, by welding, riveting, clamping, fastener connection, interference connection, etc.

[0082] It is understandable that after the battery management system 13 is installed, one, two, three or more battery cell groups 12 may be arranged in the installation cavity 117 according to the remaining space in the installation cavity 117 .

[0083] Since the installation cavity 117 extends from the front side plate 111 to the rear side plate 112 in the front-to-back direction, the size of the installation cavity 117 in the front-to-back direction is relatively large; and the battery management system 13 does not occupy the entire installation cavity 117, so by arranging the battery cell group 12 in the installation cavity 117, the space of the installation cavity 117 can be fully utilized, thereby improving the energy density of the battery 10. Moreover, the installation cavity 117 is in the middle position, and the battery cell group 12 in the installation cavity 117 can also play a role of switching, realizing the conduction of the battery cell groups 12 on the left and right sides of the installation cavity 117.

[0084] It should be noted that the front side panel 111 is provided with a plurality of air inlets, and the rear side panel 112 is provided with a plurality of air outlets. The plurality of air inlets on the front side panel 111 are arranged corresponding to the front ends of the plurality of heat dissipation air ducts 1161, and the plurality of air outlets on the rear side panel 112 are arranged corresponding to the rear ends of the plurality of heat dissipation air ducts 1161. When working, air enters the heat dissipation air duct 1161 from the air inlets and is discharged from the air outlets.

[0085] Please refer to Figure 7 In some embodiments, the shell 11 includes a corrugated plate 119, which has a plurality of first concave cavities with openings facing upward and a plurality of second concave cavities with openings facing downward, wherein one of the first concave cavities constitutes an installation cavity 117, and the remaining first concave cavities constitute a placement cavity 118 for placing the battery cell group 12, and the second concave cavities constitute a heat dissipation duct 1161.

[0086] There are many ways to form the corrugated plate 119 . For example, the corrugated plate 119 can be formed by bending, stamping, etc.

[0087] Optionally, the corrugated plate 119 is a rectangular corrugated plate, that is, the first cavity and the second cavity are both rectangular when viewed from the front end of the corrugated plate 119. Of course, in order to avoid stress concentration problems, the bottom wall of the first cavity and the top wall of the second cavity can be designed to be arc-shaped.

[0088] It is understandable that reinforcing ribs extending in the left-right direction may be provided at the bottom of the corrugated plate 119 to improve the structural strength of the corrugated plate 119 ; of course, if the structural strength of the corrugated plate 119 itself is sufficient, reinforcing ribs may not be provided.

[0089] On the one hand, the molding of the corrugated plate 119 is relatively simple, which is conducive to the formation of the installation cavity 117, the placement cavity 118 and the heat dissipation duct 1161; on the other hand, the lower part of the heat dissipation duct 1161 is provided with an opening, which is more conducive to the air entering and exiting the heat dissipation duct 1161, further improving the heat dissipation efficiency.

[0090] Please also refer to Figure 2 and Figure 3In some embodiments, the battery 10 further includes a plurality of anti-collision protrusions 14 , at least some of which are disposed on the lower side of the housing 11 and below the battery cell group 12 .

[0091] Optionally, the plurality of anti-collision convex portions 14 are arranged in the front-to-back direction, that is, the arrangement direction of the anti-collision convex portions 14 is consistent with the extension direction of the placement cavity 118. Since the bottom of the battery 10 is more susceptible to impact after the battery 10 is installed on the vehicle, the anti-collision convex portions 14 are arranged on the lower side of the housing 11 and are located below the battery cell group 12 to effectively protect the battery cell group 12.

[0092] At least part of the anti-collision protrusions 14 are arranged on the lower side of the shell 11, which can be understood as that all of the anti-collision protrusions 14 are arranged on the lower side of the shell 11; or, part of the anti-collision protrusions 14 are arranged on the lower side of the shell 11, and part of the anti-collision protrusions 14 are arranged on other sides of the shell 11, for example, the upper side of the shell 11.

[0093] It can be understood that the anti-collision protrusion 14 can be integrally formed with the shell 11, and the anti-collision protrusion 14 can also be fixed (can be but not limited to welding) on ​​the shell 11.

[0094] The anti-collision convex portion 14 may have various shapes, for example, the anti-collision convex portion 14 may be semicircular, semi-elliptical, rectangular, trapezoidal, etc.

[0095] By providing an anti-collision protrusion 14 on the lower side of the shell 11 and placing the anti-collision protrusion 14 below the battery cell group 12, the bottom of the battery 10 can be prevented from directly hitting the battery cell 121 when a collision occurs, thereby reducing the impact on the battery cell 121 and improving the safety of the battery 10.

[0096] Please also refer to Figure 2 and Figure 3 In some embodiments, the anti-collision protrusion 14 extends in the front-to-back direction, and a liquid cooling channel 141 is provided in the anti-collision protrusion 14 .

[0097] Optionally, each liquid cooling channel 141 may be connected in series through a connector, for example, the connector may be a connecting elbow, a connecting plate, etc. When the connector is a connecting elbow, a plurality of connecting elbows are respectively provided at the front end and the rear end of the shell 11, each connecting elbow connects two liquid cooling channels 141 to achieve the connection between the two liquid cooling channels 141, and finally the series connection of each liquid cooling channel 141 is achieved; when the connector is a connecting plate, a connecting plate is respectively provided at the front end and the rear end of the shell 11, each connecting plate is provided with a plurality of connecting channels, each connecting channel connects two liquid cooling channels 141 to achieve the connection between the two liquid cooling channels 141, and finally the series connection of each liquid cooling channel 141 is achieved.

[0098] The liquid cooling channel 141 is formed in the anti-collision convex portion 14, and the liquid cooling channel 141 can cooperate with the heat dissipation duct 1161 to dissipate heat from the battery cell 121 to improve the heat dissipation efficiency. Moreover, the anti-collision protection and liquid cooling of the battery cell 121 are integrated together, which is conducive to reducing the weight of the battery 10.

[0099] In other embodiments, when the heat dissipation duct 1161 is sufficient for dissipating heat to the battery cells 121 , the liquid cooling channel 141 may not be provided.

[0100] In some embodiments, a second reinforcing rib 142 is disposed in the liquid cooling channel 141 .

[0101] Optionally, the second reinforcing rib 142 extends along the front-to-back direction, and the second reinforcing rib 142 is perpendicular to the bottom plate 115 .

[0102] Optionally, the second reinforcing rib 142 is located in the middle of the liquid cooling channel 141 in the left-right direction.

[0103] By adopting the above technical solution, the second reinforcing rib 142 can increase the structural strength of the anti-collision convex portion 14, and prevent the anti-collision convex portion 14 from being greatly deformed and affecting the passage of liquid coolant.

[0104] In other embodiments, when the anti-collision protrusion 14 itself has sufficient structural strength, the second reinforcing rib 142 may not be provided.

[0105] Please refer to Figure 1 In some embodiments, a main power connector 15 is provided on the shell 11, and a positive connector 17 and a negative connector 18 connecting the battery cell group 12 and the main power connector 15 are provided in the shell 11. The positive connector 17 and the negative connector 18 are located in the installation cavity 117 and above the battery management system 13.

[0106] It can be understood that when the installation cavity 117 is in the middle position, the main power connector 15 can be provided on the front side plate 111 or the rear side plate 112; when the installation cavity 117 is on the left side, the main power connector 15 can be provided on the front side plate 111, the rear side plate 112 or the left side plate 113; when the installation cavity 117 is on the right side, the main power connector 15 can be provided on the front side plate 111, the rear side plate 112 or the right side plate 114. Optionally, a battery cell positive electrode 1211 and a battery cell negative electrode 1212 are provided on the top of the battery cell 121. Among any two adjacent battery cells 121, the battery cell positive electrode 1211 of one battery cell 121 and the battery cell negative electrode 1212 of the other battery cell 121 are connected by a connecting sheet 19, and finally all battery cells 121 are connected in series. Furthermore, the two battery cells 121 at the head and the tail are connected to the positive electrode connector 17 and the negative electrode connector 18 respectively, and the positive electrode connector 17 and the negative electrode connector 18 pass through the installation cavity 117 .

[0107] Among them, the external ends of the positive connector 17 and the negative connector 18 are on the same side of the shell 11 and are both connected to the main power connector 15. The main power connector 15 supplies power to the electrical device through a wiring harness, which can reduce the number of power connectors.

[0108] It can be understood that the positive electrode connector 17 and the negative electrode connector 18 can be connecting rods, connecting bars, connecting sheets, connecting wires, etc.

[0109] By adopting the above technical solution, the positive electrode connector 17 , the negative electrode connector 18 and the battery management system 13 share the installation cavity 117 , so that the installation cavity 117 is fully utilized.

[0110] In other embodiments, the external ends of the positive connector 17 and the negative connector 18 may also be located at different sides of the housing 11. In this case, instead of the main power connector 15, a positive power connector and a negative power connector are provided, the external end of the positive connector 17 is connected to the positive power connector, and the external end of the negative connector 18 is connected to the negative power connector. For example, the external ends of the positive connector 17 and the negative connector 18 are located at the front end and the rear end of the housing 11, respectively, and the positive power connector and the negative power connector are provided on the front side plate 111 and the rear side plate 112, respectively.

[0111] In some embodiments, a signal line connector 16 is further provided on the housing 11 , and a signal line connects the signal line connector 16 and the battery management system 13 to transmit a signal to the outside through the signal line connector 16 .

[0112] It can be understood that when the installation cavity 117 is in the middle position, the signal line connector 16 can be arranged on the front side panel 111 or the rear side panel 112; when the installation cavity 117 is on the left side, the signal line connector 16 can be arranged on the front side panel 111, the rear side panel 112 or the left side panel 113; when the installation cavity 117 is on the right side, the signal line connector 16 can be arranged on the front side panel 111, the rear side panel 112 or the right side panel 114.

[0113] Optionally, the main power connector 15 and the signal line connector 16 are located on the same side of the housing 11 .

[0114] Please refer to Figure 5 In some embodiments, the battery cell 121 is a hard shell battery cell.

[0115] Among them, the outer shell of the hard shell battery cell is a steel shell, an aluminum shell, etc.

[0116] It can be understood that the hard shell battery cell can be a square battery cell, a cylindrical battery cell, etc.

[0117] Compared with soft-pack cells, since the positive and negative electrodes of hard-shell cells are at the top, two adjacent hard-shell cells can be arranged closely, so that the arrangement of the battery cell group 12 in the front-to-back direction is more compact, which is conducive to improving energy density.

[0118] In other embodiments, the battery cell 121 may be a soft-pack battery cell, and the shell of the soft-pack battery cell is an aluminum-plastic film.

[0119] Please also refer to Figure 1 , Figure 5 and Figure 6 In some embodiments, all battery cells 121 in the housing 11 are connected in series via the connecting piece 19, so that the voltage of the battery cells 121 after being connected in series reaches the rated voltage of the new energy vehicle battery (usually DC 300-500V).

[0120] The serial connection method of all battery cells 121 in the present application is not limited. For example, it can be Figure 1 The series connection method shown in the figure, the current direction after series connection is as follows Figure 6 Direction indicated by the arrow.

[0121] Specifically, the installation cavity 117 is located in the middle position of the shell 11 in the left-right direction, the battery management system 13 is installed at the front of the installation cavity 117, and the battery cell group 12 is installed at the rear of the installation cavity 117; at the same time, multiple battery cell groups 12 are also installed on both sides of the installation cavity 117 in the shell 11; the main power connector 15 and the signal line connector 16 are both arranged on the front side plate 111, and the main power connector 15 and the signal line connector 16 are located in the middle position of the front side plate 111 in the left-right direction; the positive connector 17 and the negative connector 18 are located in the front of the installation cavity 117, and the front ends of the positive connector 17 and the negative connector 18 are connected to the main power connector 15, and the rear ends of the positive connector 17 and the negative connector 18 are respectively connected to the battery cells 121 on the left and right sides of the installation cavity 117.

[0122] The current first flows into the front half of each battery cell group 12 on the right side of the installation cavity 117 through the positive electrode connector 17, and flows back and forth in the front half of each battery cell group 12 on the right side of the installation cavity 117, and then flows to the rear half of each battery cell group 12 on the right side of the installation cavity 117 through the rightmost battery cell group 12, and flows back and forth in the rear half of each battery cell group 12 on the right side of the installation cavity 117; then, the current flows to the rear half of each battery cell group 12 on the left side of the installation cavity 117 through the battery cell group 12 in the installation cavity 117, and flows back and forth in the rear half of each battery cell group 12 on the left side of the installation cavity 117; then, the current flows to the front half of each battery cell group 12 on the left side of the installation cavity 117 through the leftmost battery cell group 12, and flows back and forth in the front half of each battery cell group 12 on the left side of the installation cavity 117; finally, it flows out through the negative electrode connector 18.

[0123] In other embodiments, multiple battery cells 121 in the same battery cell group 12 can be connected in series, and multiple battery cell groups 12 can be connected in parallel, so that all battery cells 121 in the housing 11 can be connected in series, parallel or mixed via the connecting piece 19 .

[0124] In some embodiments, the housing 11 is a metal housing, for example, the housing 11 is an aluminum profile housing.

[0125] The second aspect of the present application provides a vehicle, wherein the vehicle includes the battery 10 as in the first aspect, wherein the vehicle also includes a frame, the battery 10 is mounted on the frame, and the battery 10 is used to supply power to electrical devices of the vehicle.

[0126] The vehicle provided in the embodiment of the present application, on the basis of having the above-mentioned battery 10, can make the extension direction of the heat dissipation duct 1161 of the battery 10 the same as the driving direction of the vehicle. When the vehicle is driving, natural wind can enter the heat dissipation duct 1161 to fully dissipate the heat of the battery cells 121, thereby ensuring the normal and safe driving of the vehicle. In this way, there is no need to set up an additional fan, thereby reducing costs.

[0127] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: It includes a shell, multiple battery cell groups and a battery management system. The multiple battery cell groups are arranged in the shell at intervals along the left-right direction. The battery cell groups extend in the front-to-back direction, and a heat dissipation duct is provided between two adjacent battery cell groups. An installation cavity extending in the front-to-back direction is provided in the shell, the installation cavity and the heat dissipation duct are arranged along the left-to-right direction, and the battery management system is installed in the installation cavity.

2. The battery according to claim 1, characterized in that: The shell includes a bottom plate and a plurality of ribs arranged on the bottom plate, the plurality of ribs extend along the front-to-back direction, two adjacent ribs and the bottom plate form a placement cavity extending along the front-to-back direction, the battery cell group is placed in the placement cavity; the heat dissipation duct is formed in the ribs.

3. The battery according to claim 2, characterized in that: The shell includes a left side plate and a right side plate; the leftmost rib plate forms the left side plate, and / or the rightmost rib plate forms the right side plate.

4. The battery according to claim 1, characterized in that: The installation cavity is located in the middle of the shell in the left-right direction, and a first reinforcing rib is provided on the inner side of the bottom wall of the installation cavity.

5. The battery according to claim 4, characterized in that: The shell includes a front side plate and a rear side plate, the installation cavity extends from the front side plate to the rear side plate in the front-to-back direction, at least one battery cell group is arranged in the installation cavity, and the battery cell group in the installation cavity and the battery management system are arranged along the front-to-back direction.

6. The battery according to claim 1, characterized in that: The shell includes a corrugated plate, which has a plurality of first concave cavities with openings facing upward and a plurality of second concave cavities with openings facing downward; one of the first concave cavities constitutes the installation cavity, the remaining first concave cavities constitute placement cavities for placing the battery cell group, and the second concave cavities constitute the heat dissipation duct.

7. The battery according to any one of claims 1 to 6, characterized in that: The battery further comprises a plurality of anti-collision convex parts, at least some of which are arranged on the lower side of the shell and below the battery cell group.

8. The battery according to claim 7, characterized in that: The anti-collision convex portion extends along the front-rear direction, and a liquid cooling channel is arranged in the anti-collision convex portion.

9. The battery according to claim 8, characterized in that: A second reinforcing rib is arranged in the liquid cooling channel.

10. The battery according to any one of claims 1 to 6, characterized in that: A main power connector is provided on the shell, and a positive connector and a negative connector connecting the battery cell group and the main power connector are provided in the shell. The positive connector and the negative connector are located in the installation cavity and above the battery management system.

11. A vehicle, characterized in that: Comprising the battery according to any one of claims 1 to 10.

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