Battery pack and vehicle

Abstract

The embodiment of the utility model provides a battery pack and a vehicle. The battery pack comprises a shell; a cover body assembly; and a heat generating device; the cover body assembly is connected to the top of the shell, and the cover body assembly and the shell define a containing cavity. Wherein a cooling structure is arranged in the cover body assembly; and the heating device is arranged in the accommodating cavity. The installation convenience of the heating device can be improved, the structure of the battery pack is simplified, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack and a vehicle. Background Art

[0002] The existing battery disconnect unit (BDU) is a special BDU for electric vehicle power batteries. When there is a cooling demand, the traditional BDU will design a liquid cooling plate that integrates water channels, water inlets, water outlets and insulating membranes, install the BDU on the liquid cooling plate, and then install the liquid cooling plate and BDU assembly in the battery pack. However, the contacts and copper bars in the BDU that need to dissipate heat are inverted and abut against the liquid cooling plate to achieve heat dissipation. The structure of the BDU is relatively complex, difficult to install, and high in cost. Utility Model Content

[0003] In view of the above problems, embodiments of the present utility model are proposed to provide a battery pack and a vehicle that overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above problems, the embodiment of the utility model discloses a battery pack, including: a shell; a cover assembly;

[0005] and heating devices;

[0006] The cover assembly is connected to the top of the shell and encloses the shell to form a receiving cavity; wherein,

[0007] A cooling structure is provided in the cover assembly;

[0008] The heating device is arranged in the accommodating cavity.

[0009] Optionally, the battery pack further comprises a heat conducting member;

[0010] The heat conducting member is disposed between the heating device and the cover assembly, and is connected to the cover assembly and the heating device respectively to conduct the heat generated by the heating device to the cooling structure in the cover assembly.

[0011] Optionally, the cover assembly includes a cover plate, a connecting plate and a cooling plate;

[0012] The cooling plate is arranged between the cover plate and the heat conducting member, the cooling plate is opposite to the cover plate and is arranged at a distance, and the cooling plate is connected to the heat conducting member;

[0013] The two opposite ends of the connecting plate are respectively connected to the cover plate and the cooling plate, and the connecting plate, the cooling plate and the cover plate enclose a cooling cavity;

[0014] The cover plate is provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively connected to the cooling cavity;

[0015] The cooling structure includes the water injection port, the water outlet and the cooling cavity.

[0016] Optionally, the cooling structure further includes a plurality of groups of flow guide components;

[0017] A plurality of groups of the guide components are arranged at intervals along a first direction, and the first direction is a direction from the water inlet to the water outlet.

[0018] Optionally, one of the plurality of groups of flow guide components is a first flow guide component, the first flow guide component comprising a plurality of partitions spaced apart along a second direction, wherein the second direction intersects the first direction;

[0019] The partition extends along a first direction, is arranged between the water inlet and the water outlet along the first direction, and is arranged close to the water inlet. A plurality of the partitions divide the cooling cavity into a plurality of cooling flow paths extending along the first direction.

[0020] Optionally, one of the plurality of groups of flow guide components is a second flow guide component, and the second flow guide component includes first spoiler columns arranged in an array;

[0021] The first spoiler column is arranged between the water inlet and the water outlet along the first direction;

[0022] Wherein, opposite ends of the first spoiler column are connected to the cover plate and the cooling plate respectively.

[0023] Optionally, the cooling cavity includes a first section cavity and a second section cavity adjacent to each other along the first direction, and one group of the flow guide components in the plurality of groups of the flow guide components is a third flow guide component, and the third flow guide component includes a flow guide plate;

[0024] The guide plate is disposed at the intersection between the first section of the cavity and the second section of the cavity to conduct the cooling medium in the first section of the cavity to the second section of the cavity;

[0025] Wherein, two opposite sides of the guide plate are respectively connected to the cover plate and the cooling plate.

[0026] Optionally, the third flow guide assembly further includes a first flow guide block;

[0027] The first guide block extends along a second direction, the first guide block is spaced apart from the connecting plate, and the second direction intersects the first direction;

[0028] Wherein, two opposite sides of the first guide block are respectively connected to the cover plate and the cooling plate.

[0029] Optionally, the third flow guide assembly further includes second spoiler columns arranged in an array;

[0030] Along the first direction, the second spoiler column is arranged on at least one side of the first guide block;

[0031] Wherein, opposite ends of the second spoiler column are respectively connected to the cover plate and the cooling plate.

[0032] Optionally, the cooling cavity further includes a third section cavity, the third section cavity is arranged close to the water outlet, one group of the plurality of groups of flow guide components is a fourth flow guide component, and the fourth flow guide component includes a second flow guide block;

[0033] Along the second direction, one end of the second guide block is connected to the connecting plate, the other end of the second guide block is spaced apart from the connecting plate, and the second direction intersects the first direction;

[0034] Wherein, two opposite sides of the second guide block are respectively connected to the cover plate and the cooling plate.

[0035] Optionally, the fourth flow guide assembly further includes third spoiler columns arranged in an array;

[0036] Along the first direction, the third spoiler column is arranged on at least one side of the second guide block;

[0037] Wherein, opposite ends of the third spoiler column are respectively connected to the cover plate and the cooling plate.

[0038] Optionally, the heating device includes a cover and a heating element;

[0039] The cover body is provided with a plurality of groups of first through holes arranged in an array, and the cover body is arranged between the cover body assembly and the heating element;

[0040] A group of the first through holes is arranged corresponding to one of the heat conducting members, and at least a portion of the heat conducting member passes through the corresponding first through hole.

[0041] Optionally, the heating device includes a busbar and a relay, the busbar is provided with a second through hole, and the relay includes a contact;

[0042] The busbar is arranged between the heat conducting member and the relay;

[0043] The contact abuts against a side of the bus bar away from the heat conducting member, and at least a portion of the contact is inserted into the second through hole, and the contact and the bus bar are connected via a connecting member;

[0044] The second through holes are arranged corresponding to the first through holes, and the corresponding second through holes are opposite to the first through holes.

[0045] Optionally, the first through hole is arranged opposite to the cooling plate;

[0046] The second through hole is arranged opposite to the cooling plate.

[0047] Optionally, the second through hole is a stepped hole, and an inner wall of the second through hole has a stepped surface;

[0048] The connecting piece is threadedly connected to the contact and fixed to the step surface.

[0049] Optionally, the cover body has a limiting groove on one side facing the cover body assembly;

[0050] The portion of the cover assembly provided with the cooling structure is embedded in the limiting groove.

[0051] In a second aspect, an embodiment of the utility model further discloses a vehicle, comprising the above-mentioned battery pack.

[0052] The utility model embodiment includes the following advantages:

[0053] In the embodiment of the utility model, the cover assembly is arranged on the top of the shell and encloses the shell to form a receiving cavity. Since a cooling structure is arranged in the cover assembly, the heating device is arranged in the receiving cavity, so that the heat generated by the heating device can be transferred to the cooling structure in the cover assembly to achieve heat dissipation. Since the cooling structure can be integrated on the cover assembly and facilitates the forward installation of the heating device, the installation convenience of the heating device can be improved, the structure of the battery pack can be simplified, and the cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is an exploded diagram of a battery pack of the utility model;

[0055] Figure 2 This utility model Figure 1 Schematic diagram of the enlarged structure at A in the middle

[0056] Figure 3 This is a disassembled structural diagram of a cover assembly of the utility model.

[0057] Description of reference numerals:

[0058] 11-housing, 12-cover assembly, 121-cover plate, 1211-water inlet, 1212-water outlet, 122-cooling plate, 123-convex edge, 124-cooling cavity, 1241-first cavity, 1242-second cavity, 1243-third cavity, 125-connecting plate, 2-heating device, 21-heating element, 211-bus, 2111-second through hole, 212-relay, 2121 -contact, 22-box cover, 221-first through hole, 23-box body, 3-heat conducting member, 4-flow guide assembly, 41-first flow guide assembly, 411-partition plate, 42-second flow guide assembly, 421-first spoiler column, 43-third flow guide assembly, 431-flow guide plate, 432-first flow guide block, 433-second spoiler column, 44-fourth flow guide assembly, 441-second flow guide block, 442-third spoiler column, 5-connecting member. DETAILED DESCRIPTION

[0059] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0060] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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, and therefore should not be understood as a limitation on the present invention.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] One of the core concepts of the embodiment of the utility model is to disclose a battery pack, which may specifically include: a shell 11; a cover assembly 12; and a heating device 2; the cover assembly 12 is connected to the top of the shell 11 and is enclosed with the shell 11 to form a accommodating cavity; wherein a cooling structure is arranged in the cover assembly 12; the heating device 2 is arranged in the accommodating cavity.

[0064] In the embodiment of the utility model, the cover assembly 12 is arranged on the top of the shell 11 and encloses the shell to form a receiving cavity. Since a cooling structure is arranged in the cover assembly 12, the heating device 2 is arranged in the receiving cavity, so that the heat generated by the heating device 2 can be conducted to the cooling structure in the cover assembly 12 to achieve heat dissipation. Since the cooling structure can be integrated on the cover assembly 12 and facilitates the forward installation of the heating device 2, the installation convenience of the heating device 2 can be improved, the structure of the battery pack can be simplified, and the cost can be reduced.

[0065] In an embodiment of the utility model, the battery pack may include a shell 11 and a cover assembly 12, the cover assembly 12 is connected to the top of the shell 11, and can be enclosed with the shell 11 to form a accommodating cavity, and the accommodating cavity is used to accommodate a battery management system and a cooling system, etc.

[0066] Specifically, a cooling structure may be integrated on the cover assembly 12, so that the cover assembly 12 can function as both a protective cover and a liquid cooling plate.

[0067] Specifically, the battery pack also includes a heating device 2, which can generate heat during operation. The heating device 2 can be a BDU, a relay, a resistor, a bus, etc.

[0068] Optionally, the battery pack further includes a heat conductor 3 ; the heat conductor 3 is disposed between the heating device 2 and the cover assembly 12 , and the heat conductor 3 is respectively connected to the cover assembly 12 and the heating device 2 to conduct the heat generated by the heating device 2 to the cooling structure inside the cover assembly 12 .

[0069] In the embodiment of the utility model, the heat conductive member 3 is respectively connected to the cover assembly 12 and the heating device 2, so that the heat conductive member 3 can conduct the heat generated by the heating device 2 to the cooling structure in the cover assembly 12 to achieve heat dissipation, which can accelerate the heat dissipation speed.

[0070] Specifically, the heat-conducting member 3 can be an insulating heat-conducting adhesive or a heat-conducting structural adhesive, etc., which can conduct heat, insulate, and bond the cover assembly 12 and the heating device 2. In addition, the heat-conducting member 3 can also play a role in vibration reduction and buffering, and can isolate the direct contact between the heating device 2 and the cover assembly 12, thereby effectively preventing the heating device 2 and the cover assembly 12 from being damaged by mutual friction due to mechanical vibration and impact during operation of the battery pack, thereby protecting the coating of the heating device 2 and the insulating film on the inner surface of the cover assembly 12 to avoid leakage.

[0071] Specifically, the cover assembly 12 can be arranged above the BDU 2, so that the heating device 2 can be installed in a positive direction with the cover assembly 12 and complete heat dissipation. Compared with the traditional battery pack, the embodiment of the utility model can better save costs and simplify the structure.

[0072] Optionally, the cover body assembly 12 may include a cover plate 121, a connecting plate 125 and a cooling plate 122; the cooling plate 122 is arranged between the cover plate 121 and the heat conductive member 3, the cooling plate 122 and the cover plate 121 are opposite and spaced apart, and the cooling plate 122 is connected to the heat conductive member 3; the opposite ends of the connecting plate 125 are respectively connected to the cover plate 121 and the cooling plate 122, and the connecting plate 125, the cooling plate 122 and the cover plate 121 enclose a cooling cavity 124; a water inlet 1211 and a water outlet 1212 are provided on the cover plate 121, and the water inlet 1211 and the water outlet 1212 are respectively connected to the cooling cavity 124; the cooling structure includes the water inlet 1211, the water outlet 1212 and the cooling cavity 124.

[0073] In the embodiment of the utility model, the connecting plate 125, the cooling plate 122 and the cover plate 121 enclose a cooling cavity 124, and the water inlet 1211 and the water outlet 1212 are respectively connected to the cooling cavity 124, so that the cooling medium can enter the cooling cavity 124 from the water inlet 1211 and then be discharged from the water outlet 1212, thereby facilitating the heat dissipation of the heating device 2.

[0074] Specifically, the cooling plate 122 may abut against the heat conducting member 3 , so that the heat conducting member 3 may conduct the heat to the cooling medium in the cooling cavity 124 through the cooling plate 122 , and then be carried away by the cooling medium.

[0075] Specifically, the water inlet 1211 and the water outlet 1212 can be connected to the external cooling medium circulation system respectively, so that the cooling medium circulates in the cooling cavity 124. The cooling medium can be gas or liquid, and the embodiment of the utility model is only described by taking the cooling medium as water as an example.

[0076] Specifically, the heat conducting member 3 may be in contact with or fixedly connected to the cooling plate 122 , and may be specifically configured according to actual needs, and the embodiment of the present utility model does not specifically limit this.

[0077] Optionally, the cooling plate 122 is opposite to the cover plate 121 and is spaced apart, the size of the cooling plate 122 is smaller than the size of the cover plate 121 , one end of the connecting plate 125 is connected to the cover plate 121 , and the other end of the connecting plate 125 can be connected to the circumference of the cooling plate 122 .

[0078] Furthermore, the connecting plate 125 and the cooling plate 122 may be integrally formed, and the connecting plate 125 and the cover plate 121 may be fixedly connected.

[0079] Alternatively, the cooling plate 122 is opposite to the cover plate 121 and is spaced apart, the size of the cooling plate 122 is equal to the size of the cover plate 121, one end of the connecting plate 125 is connected to the circumference of the cover plate 121, and the other end of the connecting plate 125 can be connected to the circumference of the cooling plate 122.

[0080] Furthermore, a flange 123 is provided at one end where the connecting plate 125 is connected to the cover plate 121, and the flange 123 extends outward along the circumference of the connecting plate 125. The connecting plate 125 is fixedly connected to the cover plate 121, and the planes where the cover plate 121 and the flange 123 are located coincide with each other; the connecting plate 125, the flange 123 and the cooling plate 122 can be integrally formed.

[0081] Specifically, the connecting plate 125 and the cover plate 121 can be fixedly connected. To ensure the sealing of the cooling chamber 124, the cover plate 121 can be fixed to the connecting plate 125 by stir friction welding. Through the friction, stirring of the stirring head and the friction of the shaft shoulder, the material of the cover plate 121 is thermoplasticized. The thermoplasticized material is transferred from the front to the rear of the stirring needle under the rotating friction of the stirring head. At the same time, it is squeezed and forged under the action of the stirring shaft shoulder, and finally a weld joint composed of fine forging structure is obtained. Since the welded metal material does not undergo the "melting-solidification" process during the entire welding process, an excellent solid phase joint connection is obtained, thereby ensuring that there will be no leakage in the cooling chamber 124.

[0082] Optionally, the cooling structure further includes a plurality of groups of flow guide components 4 ; the plurality of groups of flow guide components 4 are arranged at intervals along a first direction, and the first direction is a direction from the water injection port 1211 to the water outlet 1212 .

[0083] In the embodiment of the utility model, a flow guide component 4 is provided in the cooling cavity 124, which can increase the heat exchange area and further improve the heat exchange effect of the cooling structure.

[0084] Specifically, the number of the guide components 4 may include multiple groups, and the multiple groups of guide components 4 may be arranged at intervals along the first direction to increase the heat exchange area of ​​the cooling structure while effectively ensuring the smooth flow of the cooling medium in the cooling cavity 124.

[0085] Alternatively, if Figure 3 As shown, one group of guide components 4 among the multiple groups of guide components 4 is a first guide component 41, and the first guide component 41 includes a plurality of partitions 411 arranged at intervals along a second direction, wherein the second direction intersects with the first direction; the partition 411 extends along the first direction, and the partition 411 is arranged between the water injection port 1211 and the water outlet 1212 along the first direction, and the partition 411 is arranged close to the water injection port 1211, and the plurality of partitions 411 divide the cooling chamber 124 into a plurality of cooling flow paths extending along the first direction.

[0086] In the embodiment of the utility model, a plurality of partitions 411 divide the cooling cavity 124 into a plurality of cooling flow paths extending along the first direction, so that the cooling medium can more evenly cover the entire cooling cavity 124 when flowing in the cooling cavity 124, thereby improving the cooling efficiency.

[0087] Specifically, the partition 411 can extend along the first direction, that is, the first direction is the length direction of the partition 411. The number of partitions 411 can be set according to actual needs, and the embodiment of the utility model does not specifically limit this. A cooling flow path can be formed between adjacent partitions 411; the connecting plate 125 and the partition 411 closest to it are arranged at intervals, and the gap between the connecting plate 125 and the partition 411 closest to it can also form a cooling flow path.

[0088] Furthermore, since the partition 411 is arranged between the water injection port 1211 and the water outlet 1212 along the first direction, after the cooling medium is injected into the cooling chamber 124 through the water injection port 1211, under the action of the partition 411, the cooling medium can flow to the water outlet 1212 through multiple cooling flow paths, so that the cooling medium can fully contact the cooling structure to improve the cooling efficiency.

[0089] Specifically, the first direction may be the flow direction of the cooling medium, the second direction may intersect with the first direction, and the second direction may be the width direction of the cover assembly 12, such as Figure 3 As shown, the embodiment of the utility model is only illustrated by taking the first direction as the X-axis direction and the second direction as the Y-axis direction.

[0090] Optionally, two opposite sides of the partition 411 may be respectively connected to the cover plate 121 and the cooling plate 122 to improve the convenience of fixing the partition 411 .

[0091] Specifically, the partition 411 may be fixedly connected to the cooling plate 122 , and the partition 411 and the cover plate 121 may be abutted or fixedly connected, so that the partition 411 may be vertically arranged to the cover plate 121 .

[0092] Optionally, two opposite sides of the partition 411 may be respectively connected to the connecting plate 125 , and both opposite sides of the partition 411 may be fixedly connected to the connecting plate 125 , so that the partition 411 may be arranged parallel to the cover plate 121 .

[0093] Optionally, one of the multiple groups of guide components 4 is a second guide component 42 , and the second guide component 42 includes first spoiler columns 421 arranged in an array; the first spoiler columns 421 are arranged between the water inlet 1211 and the water outlet 1212 along the first direction.

[0094] In an embodiment of the utility model, the first spoiler columns 421 arranged in an array along the first direction are set between the water inlet 1211 and the water outlet 1212. The first spoiler columns 421 can divert the cooling medium, and the contact between the first spoiler columns 421 and the cooling medium can increase the heat exchange area and improve the cooling efficiency of the cooling structure.

[0095] Specifically, the number of the first spoiler columns 421 can be set according to actual needs, such as Figure 3 As shown, a situation where a plurality of first spoiler columns 421 are arranged in an array along the first direction and the second direction is illustrated. Other situations may refer to the settings, and the embodiments of the present utility model do not specifically limit this.

[0096] Specifically, along the first direction, the second guide component 42 can be arranged between the water injection port 1211 and the first guide component 41, or the second spoiler column 433 can also be arranged between the first guide component 41 and the water outlet 1212, which can be specifically limited according to actual needs.

[0097] Optionally, two opposite ends of the first spoiler column 421 are respectively connected to the cover plate 121 and the cooling plate 122 to improve the reliability of fixing the first spoiler column 421 .

[0098] Specifically, one end of the first spoiler column 421 may be fixedly connected to the cooling plate 122 , and the other end may be abutted against or fixedly connected to the cover plate 121 .

[0099] Optionally, the cooling cavity 124 may include adjacent first-section cavity 1241 and second-section cavity 1242 along the first direction, one group of guide components 4 in the multiple groups of guide components 4 may be a third guide component 43, and the third guide component 43 may include a guide plate 431; the guide plate 431 is arranged at the intersection between the first-section cavity 1241 and the second-section cavity 1242 to conduct the cooling medium in the first-section cavity 1241 to the second-section cavity 1242; wherein, the opposite sides of the guide plate 431 are respectively connected to the cover plate 121 and the cooling plate 122.

[0100] In an embodiment of the utility model, the guide plate 431 is arranged at the intersection between the first section cavity 1241 and the second section cavity 1242 to conduct the cooling medium in the first section cavity 1241 to the second section cavity 1242, and can also divert the cooling medium, which can further improve the cooling efficiency of the cooling structure.

[0101] Specifically, the number of the guide plates 431 may be one or at least two, and at least two guide plates 431 may be disposed opposite to each other and spaced apart.

[0102] Specifically, the guide plate 431 may extend along the first direction, and the guide plate 431 may be an arc-shaped plate or a V-shaped plate, etc.

[0103] Specifically, one end of the guide plate 431 may be fixedly connected to the cooling plate 122 , and the other end may be abutted against or fixedly connected to the cover plate 121 .

[0104] Optionally, the third guide assembly 43 also includes a first guide block 432; the first guide block 432 can extend along the second direction, the first guide block 432 is spaced apart from the connecting plate 125, and the second direction intersects with the first direction; wherein, the opposite sides of the first guide block 432 are respectively connected to the cover plate 121 and the cooling plate 122.

[0105] In the embodiment of the utility model, the first guide block 432 is spaced apart from the connecting plate 125 so that the cooling medium can pass through the gap between the first guide block 432 and the connecting plate 125. The first guide block 432 can change the flow direction of the cooling medium, which is beneficial for the cooling medium to cover the cooling cavity 124 more evenly when flowing, thereby increasing the heat exchange area of ​​the cooling structure and improving the cooling efficiency.

[0106] Specifically, one side of the first guide block 432 may be fixedly connected to the cooling plate 122 , and the other side may be abutted against or fixedly connected to the cover plate 121 .

[0107] Optionally, the third guide assembly 43 further includes second spoiler columns 433 arranged in an array; along the first direction, the second spoiler columns 433 are disposed on at least one side of the first guide block 432; wherein the opposite ends of the second spoiler columns 433 are respectively connected to the cover plate 121 and the cooling plate 122.

[0108] In the embodiment of the utility model, the second spoiler column 433 can divert the cooling medium, and a plurality of second spoiler columns 433 are in contact with the cooling medium, so as to increase the heat exchange area and improve the cooling efficiency.

[0109] Specifically, the number of the second spoiler columns 433 can be set according to actual needs, such as Figure 3 As shown, a situation where a plurality of second spoiler columns 433 are arranged in an array along the first direction and the second direction is illustrated. Other situations may refer to the settings, and the embodiments of the present utility model do not make specific limitations on this.

[0110] Specifically, one end of the second spoiler column 433 may be fixedly connected to the cooling plate 122 , and the other end may be abutted against or fixedly connected to the cover plate 121 .

[0111] Optionally, the cooling chamber 124 also includes a third section cavity 1243, which is arranged near the water outlet 1212, and one group of guide components 4 among the multiple groups of guide components 4 is a fourth guide component 44, and the fourth guide component 44 includes a second guide block 441; along the second direction, one end of the second guide block 441 is connected to the connecting plate 125, and the other end of the second guide block 441 is spaced apart from the connecting plate 125, and the second direction intersects with the first direction; wherein, the opposite sides of the second guide block 441 are respectively connected to the cover plate 121 and the cooling plate 122.

[0112] In an embodiment of the utility model, the gap between the second guide block 441 and the connecting plate 125 can pass cooling medium, which can reduce the cooling channel, so that the cooling medium can fully exchange heat with the second guide block 441 and the cover assembly 12, thereby improving the heat exchange efficiency.

[0113] Specifically, one end of the second guide block 441 is fixedly connected or abutted to the connecting plate 125, and the other end is spaced apart from the connecting plate 125; one side of the second guide block 441 is fixedly connected or abutted to the cooling plate 122, and the other side can be fixedly connected or abutted to the cover plate 121.

[0114] Optionally, the fourth guide assembly 44 also includes third spoiler columns 442 arranged in an array; along the first direction, the third spoiler columns 442 are arranged on at least one side of the second guide block 441, wherein the opposite ends of the third spoiler columns 442 are respectively connected to the cover plate 121 and the cooling plate 122.

[0115] In the embodiment of the utility model, the third spoiler column 442 can change the flow direction of the cooling medium, and the third spoiler column 442 is in contact with the cooling medium, which can increase the heat exchange area and improve the cooling efficiency.

[0116] Specifically, Figure 3 As shown, a situation where the third spoiler columns 442 are arranged in an array along the first direction and the second direction respectively is illustrated. Other situations may refer to the settings, and the embodiment of the utility model does not make specific limitations on this.

[0117] In some other optional embodiments of the utility model, the heating device 2 may include a box cover 22 and a heating element 21; a plurality of groups of first through holes 221 arranged in an array are provided on the box cover 22, and the box cover 22 is arranged between the cover body assembly 12 and the heating element 21; a group of first through holes 221 is arranged corresponding to a heat conductive member 3, and at least a portion of the heat conductive member 3 is passed through the corresponding first through holes 221.

[0118] In the embodiment of the utility model, the heat conductive member 3 is passed through the first through hole 221, so that the heat conductive member 3 is connected to the cover assembly 12 and the heating element 21 respectively, and the heat conductive member 3 can conduct the heat field of the heating element 21 to the cooling structure in the cover assembly 12.

[0119] Specifically, a plurality of groups of first through holes 221 arranged in an array may be spaced apart along the first direction. A group of first through holes 221 arranged in an array may be combined to form a square hole, so that the heat conducting member 3 may pass through the plurality of first through holes 221 respectively.

[0120] Specifically, the first through holes 221 arranged in an array in each group can be evenly distributed, so that the contact area between the heat conductor 3 and the cooling plate 122 and the bus 211 can be further guaranteed, and the thickness and uniformity of the heat conductor 3 can be effectively guaranteed, thereby achieving stable and efficient heat conduction.

[0121] Optionally, combined Figure 1 and Figure 2 As shown, the heating element 21 includes a bus 211 and a relay 212, the bus 211 is provided with a second through hole 2111, and the relay 212 includes a contact 2121; the bus 211 is arranged between the heat-conducting member 3 and the relay 212; the contact 2121 abuts against the side of the bus 211 away from the heat-conducting member 3, and at least part of the contact 2121 is penetrated into the second through hole 2111, and the contact 2121 and the bus 211 are connected by a connecting member 5; the second through hole 2111 is arranged corresponding to the first through hole 221, and the corresponding second through hole 2111 is opposite to the first through hole 221.

[0122] In the embodiment of the utility model, the heat generated by the heating device 2 during operation can be transferred out through the contact 2121 of the relay 212, the bus 211, the heat conducting member 3 and the cover assembly 12 in sequence, thereby achieving the purpose of heat dissipation of the heating device 2. Without increasing the specifications of the relay 212 and the current-carrying area of ​​the bus 211, the heating device 2 can still cope with the high heat generated at a high charging rate, thereby improving the current-carrying capacity of the battery pack.

[0123] Specifically, Figure 1 As shown, the heating device 2 includes a box body 23 , and the bus bar 211 and the relay 212 are both arranged in the box body 23 .

[0124] Specifically, multiple groups of first through holes 221 can be provided on the box cover 22, so that multiple heat-conducting parts 3 can fix the heating element 21 and the cover assembly 12 from multiple positions, and can conduct the heat generated by the relay 212 and the bus 211 from multiple positions to the cooling structure in the cover assembly 12 for heat dissipation.

[0125] Specifically, the heat conductive member 3 may be evenly coated on the outer surface of the cooling plate 122 , ie, the side of the cooling plate 122 opposite to the cover plate 121 , and the heat conductive member 3 directly contacts the bus 211 through the first through holes 221 arranged in an array.

[0126] Specifically, the contacts 2121 , the second through holes 2111 and the connectors 5 are arranged in a one-to-one correspondence, and the contacts 2121 can be inserted into the corresponding second through holes 2111 ; the connectors 5 can fix the corresponding contacts 2121 and the busbar 211 .

[0127] Specifically, Figure 1 As shown, the cover assembly 12, the box cover 22, the bus 211 and the relay 212 are stacked in sequence, the contact 2121 of the relay 212 is penetrated through the second through hole 2111 on the bus 211, the heat conductor 3 is penetrated through the first through hole 221 on the box cover 22, and the heat conductor 3 is respectively abutted against the bus 211 and the cover assembly 12. While ensuring the operation of the high-voltage circuit, the heat of the contact 2121 of the relay 212 can be transferred to the heat conductor 3 through the bus 211, and then dissipated through the cooling structure, thereby achieving the purpose of cooling the relay 212 and the bus 211.

[0128] Optionally, the first through hole 221 can be arranged opposite to the cooling plate 122, and the second through hole 2111 can be arranged opposite to the cooling plate 122, which can further enhance the cooling effect of the cooling structure on the heating device 2 and improve the heat dissipation speed of the heating device 2.

[0129] Optionally, the second through hole 2111 may be a stepped hole, and the inner wall of the second through hole 2111 has a stepped surface; the connecting member 5 is threadedly connected to the contact 2121 and fixed to the stepped surface.

[0130] In the embodiment of the utility model, the bolt is threadedly connected to the contact 2121 and fixed to the step surface, so that the contact 2121 and the bus 211 are fixed by the bolt. Moreover, the bolt is fixed to the step surface so that the bolt can sink into the second through hole 2111, which can prevent the end face of the bolt from protruding from the surface of the bus 211, and can increase the contact area between the contact 2121 and the bus 211 and the heat conducting member 3, thereby achieving more efficient heat conduction.

[0131] Specifically, the connector 5 can be a bolt or a flat head screw, so that after the connector 5 is threadedly connected to the contact 2121, the connector 5 cooperates with the step surface, and the connector 5 sinks to the surface of the bus 211, and the connector 5 does not protrude from the surface of the bus 211, that is, the end surface of the connector 5 can be slightly recessed from the surface of the bus 211. In this way, the contact 2121 and the bus 211 can contact the heat conductor 3 with a larger area, thereby achieving more efficient heat conduction.

[0132] Specifically, the end surface of the connector 5 may be slightly recessed from the surface of the busbar 211 , and the end surface of the connector 5 may be lower than the surface of the busbar 211 by about 0.5 mm.

[0133] Optionally, the box cover 22 has a limiting groove on one side facing the cover body assembly 12 ; the portion of the cover body assembly 12 provided with the cooling structure can be embedded in the limiting groove, which can improve the reliability of the fit between the box cover 22 and the cover body assembly 12 .

[0134] The battery pack described in the embodiment of the utility model has at least the following advantages:

[0135] In the embodiment of the utility model, the cover assembly is arranged on the top of the shell and encloses the shell to form a receiving cavity. Since a cooling structure is arranged in the cover assembly, the heating device is arranged in the receiving cavity, so that the heat generated by the heating device can be transferred to the cooling structure in the cover assembly to achieve heat dissipation. Since the cooling structure can be integrated on the cover assembly and facilitates the forward installation of the heating device, the installation convenience of the heating device can be improved, the structure of the battery pack can be simplified, and the cost can be reduced.

[0136] In a second aspect, an embodiment of the utility model further discloses a vehicle, comprising the above-mentioned battery pack.

[0137] The vehicle described in the embodiment of the utility model has at least the following advantages:

[0138] In the embodiment of the utility model, the cover assembly is arranged on the top of the shell and encloses the shell to form a receiving cavity. Since a cooling structure is arranged in the cover assembly, the heating device is arranged in the receiving cavity, so that the heat generated by the heating device can be transferred to the cooling structure in the cover assembly to achieve heat dissipation. Since the cooling structure can be integrated on the cover assembly and facilitates the forward installation of the heating device, the installation convenience of the heating device can be improved, the structure of the battery pack can be simplified, and the cost can be reduced.

[0139] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0140] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0141] The battery pack and vehicle provided by the present invention are introduced in detail above. The principle and implementation mode of the present invention are explained in detail using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A battery pack, characterized in that: include: Housing (11); A cover assembly (12); and a heating device (2); The cover assembly (12) is connected to the top of the shell (11) and is enclosed with the shell (11) to form a receiving cavity; wherein: A cooling structure is provided in the cover assembly (12); The heating device (2) is arranged in the accommodating cavity.

2. The battery pack according to claim 1, characterized in that: The battery pack also includes a heat conducting member (3); The heat conducting member (3) is arranged between the heating device (2) and the cover assembly (12), and the heat conducting member (3) is respectively connected to the cover assembly (12) and the heating device (2) so as to conduct the heat generated by the heating device (2) to the cooling structure in the cover assembly (12).

3. The battery pack according to claim 2, characterized in that: The cover assembly (12) comprises a cover plate (121), a connecting plate (125) and a cooling plate (122); The cooling plate (122) is arranged between the cover plate (121) and the heat conducting member (3); the cooling plate (122) and the cover plate (121) are opposite to each other and arranged at a distance; and the cooling plate (122) is connected to the heat conducting member (3); The opposite ends of the connecting plate (125) are respectively connected to the cover plate (121) and the cooling plate (122); the connecting plate (125), the cooling plate (122) and the cover plate (121) enclose a cooling cavity (124); The cover plate (121) is provided with a water inlet (1211) and a water outlet (1212), and the water inlet (1211) and the water outlet (1212) are respectively connected to the cooling cavity (124); The cooling structure comprises the water injection port (1211), the water outlet (1212) and the cooling cavity (124).

4. The battery pack according to claim 3, characterized in that: The cooling structure also includes a plurality of groups of flow guide components (4); A plurality of groups of the guide components (4) are arranged at intervals along a first direction, wherein the first direction is a direction from the water injection port (1211) to the water outlet (1212).

5. The battery pack according to claim 4, characterized in that: One of the plurality of groups of flow guide components (4) is a first flow guide component (41), the first flow guide component (41) comprising a plurality of partitions (411) spaced apart along a second direction, wherein the second direction intersects with the first direction; The partition (411) extends along a first direction, and the partition (411) is arranged between the water injection port (1211) and the water outlet (1212) along the first direction, and the partition (411) is arranged close to the water injection port (1211), and a plurality of the partitions (411) divide the cooling cavity (124) into a plurality of cooling flow paths extending along the first direction.

6. The battery pack according to claim 4, characterized in that: One of the plurality of groups of flow guide components (4) is a second flow guide component (42), and the second flow guide component (42) comprises first spoiler columns (421) arranged in an array; The first spoiler column (421) is arranged between the water inlet (1211) and the water outlet (1212) along the first direction; Wherein, opposite ends of the first spoiler column (421) are respectively connected to the cover plate (121) and the cooling plate (122).

7. The battery pack according to claim 4, characterized in that: The cooling cavity (124) comprises a first cavity section (1241) and a second cavity section (1242) adjacent to each other along the first direction; one of the plurality of groups of flow guide components (4) is a third flow guide component (43); and the third flow guide component (43) comprises a flow guide plate (431); The guide plate (431) is arranged at the intersection between the first section cavity (1241) and the second section cavity (1242) to conduct the cooling medium in the first section cavity (1241) to the second section cavity (1242); Wherein, opposite sides of the guide plate (431) are respectively connected to the cover plate (121) and the cooling plate (122).

8. The battery pack according to claim 7, characterized in that: The third flow guide component (43) further comprises a first flow guide block (432); The first guide block (432) extends along a second direction, the first guide block (432) and the connecting plate (125) are arranged at a distance, and the second direction intersects with the first direction; Wherein, opposite sides of the first guide block (432) are respectively connected to the cover plate (121) and the cooling plate (122).

9. The battery pack according to claim 8, characterized in that: The third flow guide component (43) further comprises second spoiler columns (433) arranged in an array along the first direction and the second direction; Along the first direction, the second spoiler column (433) is arranged on at least one side of the first guide block; Wherein, opposite ends of the second spoiler column (433) are respectively connected to the cover plate (121) and the cooling plate (122).

10. The battery pack according to claim 4, characterized in that: The cooling cavity (124) further comprises a third cavity section (1243), the third cavity section (1243) being arranged close to the water outlet (1212), one group of the flow guide components (4) among the plurality of groups of the flow guide components (4) being a fourth flow guide component (44), the fourth flow guide component (44) comprising a second flow guide block (441); Along the second direction, one end of the second guide block (441) is connected to the connecting plate (125), the other end of the second guide block (441) is spaced apart from the connecting plate (125), and the second direction intersects with the first direction; Wherein, two opposite sides of the second guide block (441) are respectively connected to the cover plate (121) and the cooling plate (122).

11. The battery pack according to claim 10, characterized in that: The fourth flow guide component (44) further includes third spoiler columns (442) arranged in an array; Along the first direction, the third spoiler column (442) is arranged on at least one side of the second guide block (441); Wherein, opposite ends of the third spoiler column (442) are respectively connected to the cover plate (121) and the cooling plate (122).

12. The battery pack according to claim 3, characterized in that: The heating device (2) comprises a box cover (22) and a heating element (21); The box cover (22) is provided with a plurality of groups of first through holes (221) arranged in an array, and the box cover (22) is arranged between the cover body assembly (12) and the heating element (21); A group of the first through holes (221) is arranged corresponding to one of the heat conducting components (3), and at least a portion of the heat conducting component (3) passes through the corresponding first through hole (221).

13. The battery pack according to claim 12, characterized in that: The heating element (21) comprises a busbar (211) and a relay (212); the busbar (211) is provided with a second through hole (2111); and the relay (212) comprises a contact (2121); The busbar (211) is arranged between the heat conducting element (3) and the relay; The contact (2121) abuts against a side of the busbar (211) away from the heat conducting member (3), and at least a portion of the contact (2121) is inserted into the second through hole, and the contact (2121) and the busbar (211) are connected via a connecting member; The second through hole (2111) is arranged corresponding to the first through hole (221), and the corresponding second through hole (2111) is opposite to the first through hole (221).

14. The battery pack according to claim 13, characterized in that: The first through hole (221) is arranged opposite to the cooling plate (122); The second through hole (2111) is arranged opposite to the cooling plate (122).

15. The battery pack according to claim 13, characterized in that: The second through hole (2111) is a stepped hole, and the inner wall of the second through hole (2111) has a stepped surface; The connecting piece is threadedly connected to the contact (2121) and fixed to the step surface.

16. The battery pack according to claim 12, characterized in that: The box cover (22) has a limiting groove on one side facing the cover body assembly (12); The portion of the cover assembly (12) provided with the cooling structure is embedded in the limiting groove.

17. A vehicle, characterized in that: A battery pack comprising any one of claims 1-16.

Images