Battery box body and battery pack

Abstract

The utility model discloses a battery box body and a battery pack. The battery box body comprises a box assembly and an adapter. The box assembly comprises a plurality of stacked box bodies, each box body comprises a containing cavity used for containing a battery pack, every two adjacent box bodies are connected, and the containing cavities of every two adjacent box bodies communicate with each other; the adapter is arranged on the box body, the adapter is provided with a first interface and a second interface, the first interface is used for being electrically connected with the battery pack, and the second interface is used for being electrically connected with external equipment. The battery box body can meet the requirements of different products for electric quantity, and is high in reliability.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a battery box and a battery pack. Background Art

[0002] In the electric vehicle sector, the power battery pack plays an irreplaceable and important role as the power source of electric vehicles. The battery pack consists of a housing and the battery pack inside. While the battery pack housing is typically single-layer, some manufacturers are using multi-layered housings to meet the power requirements of different products.

[0003] However, in the related art, some multi-layered boxes have problems such as poor reliability. Utility Model Content

[0004] The present application provides a battery box and a battery pack. The battery box can meet the power requirements of different products and has high reliability.

[0005] An embodiment of the present application provides a battery case, comprising a case assembly and an adapter. The case assembly comprises a plurality of stacked case bodies, each of which includes a cavity for accommodating a battery pack. Adjacent case bodies are connected, and the cavities of two adjacent case bodies are interconnected. The adapter is disposed within the case body and has a first interface and a second interface. The first interface is for electrically connecting to the battery pack, and the second interface is for electrically connecting to an external device.

[0006] In some embodiments, at least some of the multiple box bodies are provided with openings and at least some of the box bodies are provided with wire holes, one of two adjacent box bodies covers the opening of the other, and the accommodating cavities of the two adjacent box bodies are connected through the wire holes.

[0007] In some embodiments, the battery box further includes a cover plate, which is placed at the opening of one of the outermost box bodies and is detachably connected to the box body.

[0008] In some embodiments, multiple box bodies are stacked along a first direction, and each box body includes a bottom wall and an opening opposite to the bottom wall along the first direction. Among two adjacent box bodies, the bottom wall of one box body covers the opening of the other box body and is provided with a wire threading hole.

[0009] In some embodiments, it also includes a fixed beam and a circuit board. The fixed beam is placed in the accommodating cavity and connected to the box body. The fixed beam divides the accommodating cavity into a first chamber and a second chamber. The battery pack is placed in the first chamber, and the circuit board is placed in the second chamber. The wire threading hole is connected to the second chamber, and the circuit board is electrically connected to the battery pack.

[0010] In some embodiments, a first connection hole is provided on one of each two adjacent box bodies among the multiple box bodies, and a second connection hole is provided on the other one, and the two adjacent box bodies are detachably connected by a first fastener passing through the first connection hole and the second connection hole.

[0011] In some embodiments, a card slot is provided on one of every two adjacent box bodies among the plurality of box bodies, and a buckle is provided on the other one, and the buckle is connected to the card slot.

[0012] In some embodiments, a positioning hole is provided on one of every two adjacent box bodies among the plurality of box bodies, and a positioning column is provided on the other one, and the positioning column is inserted into the positioning hole.

[0013] In some embodiments, the battery box further includes a heat exchange device, which is disposed in the accommodating cavity. The box body is provided with an inlet and an outlet, the inlet is connected to the heat exchange device, and the outlet is connected to the heat exchange device.

[0014] In some embodiments, a sealing member is provided between adjacent box bodies, and the sealing member is configured to seal the adjacent box bodies.

[0015] The present application also provides a battery pack comprising the aforementioned battery case, a battery pack, and a cable. The battery pack comprises stacked cells, with each cell housing a battery pack disposed within a respective cavity of the case. The cables are electrically connected to the cells within adjacent cases.

[0016] This application has at least the following beneficial effects:

[0017] The battery case provided in the present application includes a case assembly and an adapter. The case assembly includes a plurality of stacked case bodies, each of which includes a receiving cavity for receiving a battery pack, which can meet the power requirements of different products. Two adjacent case bodies are connected, and no additional connection structure is required, so that the battery case occupies a small space. The receiving cavities of two adjacent case bodies are connected, so that the battery packs in each receiving cavity can be electrically connected inside the battery case. The adapter is provided on the case body, and the adapter has a first interface and a second interface. The first interface is electrically connected to the battery pack, and the second interface is electrically connected to an external device, so that the battery case is highly safe, reduces safety hazards, and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 A schematic structural diagram of a battery box provided in one embodiment of the present application;

[0020] Figure 2 An exploded view of a battery box provided in one embodiment of the present application;

[0021] Figure 3 A schematic structural diagram of a box body and an adapter provided in one embodiment of the present application;

[0022] Figure 4 A top view of the box body and adapter provided in one embodiment of the present application.

[0023] The following are the descriptions of the reference numerals:

[0024] 10. Battery box;

[0025] 1. Box assembly; 11. Box body; 111. Opening; 112. Threading hole; 113. Bottom wall; 114. First connecting hole; 115. Second connecting hole; 116. Positioning post; 117. Positioning hole; 118. Third connecting hole; 119. Fourth connecting hole; 12. Cover plate;

[0026] 2. Adapter;

[0027] 3. Seals;

[0028] 4. Fixed beam;

[0029] 5. Circuit board;

[0030] X - first direction. DETAILED DESCRIPTION

[0031] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0033] See also Figure 1 and Figure 2 , an embodiment of the present application provides a battery case 10, including a case assembly 1 and an adapter 2. The case assembly 1 includes a plurality of stacked case bodies 11. Each case body 11 includes a accommodating cavity. The accommodating cavity is used to accommodate a battery pack. Two adjacent case bodies 11 are connected, and the accommodating cavities of two adjacent case bodies 11 are connected. The adapter 2 is arranged on the case body 11. The adapter 2 has a first interface and a second interface. The first interface is used to electrically connect to the battery pack, and the second interface is used to electrically connect to an external device.

[0034] The box assembly 1 includes a plurality of box bodies 11 stacked together, which can be understood as the box assembly 1 including a plurality of box bodies 11 stacked together along the first direction X.

[0035] Optionally, the box assembly 1 may include two box bodies 11 stacked together, or three box bodies 11 stacked together, or more box bodies 11 stacked together.

[0036] The box body 11 can be a rectangular parallelepiped or cylindrical three-dimensional structure. The material of the box body 11 can be alloy materials such as aluminum alloy, iron alloy, or polymer materials such as polycarbonate, polyisocyanurate foam, or composite materials such as glass fiber and epoxy resin.

[0037] The accommodating cavity can be a three-dimensional structure such as a cuboid or a cylinder. Further, the shape of the accommodating cavity matches the shape of the box body 11. For example, the box body 11 is a cuboid structure, and the accommodating cavity is a cuboid structure.

[0038] Two adjacent boxes are connected, and the connection can be either a fixed connection or a detachable connection. The fixed connection can be fixed by welding or bonding. The detachable connection can be detachably connected by fastening with a first fastener such as a bolt, or by partially extending one into the other for a snap-fit ​​connection.

[0039] The external device may be a vehicle, a mobile phone, or a portable device.

[0040] Optionally, the adapter 2 includes at least one of a high-voltage adapter and a low-voltage adapter, so that the battery box 10 can be used for both low-voltage equipment and high-voltage equipment, thereby increasing the scope of use of the battery box 10.

[0041] In summary, the battery case 10 provided according to one embodiment of the present application includes a case assembly 1 and an adapter 2. The case assembly 1 includes a plurality of stacked case bodies 11, each of which includes a receiving cavity for receiving a battery pack, which can meet the power requirements of different products. Two adjacent case bodies 11 are connected, and no additional connection structure is required, so that the battery case 10 occupies a small space. The receiving cavities of two adjacent case bodies 11 are interconnected, so that the battery packs in each receiving cavity can be electrically connected inside the battery case 10. The adapter 2 is provided on the case body 11, and the adapter 2 has a first interface and a second interface. The first interface is electrically connected to the battery pack, and the second interface is electrically connected to an external device, so that the battery case 10 has high safety, reduces safety hazards, and has high reliability.

[0042] See also Figure 1-Figure 3 In some embodiments, at least some of the box bodies 11 among the multiple box bodies 11 are provided with openings 111 and at least some of the box bodies 11 are provided with wire holes 112, one of two adjacent box bodies 11 covers the opening 111 of the other, and the accommodating cavities of the two adjacent box bodies 11 are connected through the wire holes 112.

[0043] The openings 111 are provided on at least some of the box bodies 11 among the multiple box bodies 11, which includes the openings 111 being provided on some of the box bodies 11 among the multiple box bodies 11, and of course also includes the openings 111 being provided on all of the box bodies 11 among the multiple box bodies 11.

[0044] The shape of the opening 111 can be rectangular, square or circular. Further, the shape of the opening 111 matches the shape of the box body 11. Exemplarily, the box body 11 is a rectangular parallelepiped structure, and the opening 111 is rectangular or square.

[0045] Furthermore, the openings 111 provided on the plurality of box bodies 11 are of the same size and shape.

[0046] The battery case 10 provided in one embodiment of the present application has an opening 111 provided on at least a portion of the case body 11. On the one hand, it is convenient to place the battery pack into the accommodating cavity; on the other hand, it is convenient to inspect and replace the battery pack in the accommodating cavity when the battery pack is damaged.

[0047] See also Figure 2 In some embodiments, the battery box 10 further includes a cover plate 12 , which is placed at the opening 111 of one of the outermost box bodies 11 and is detachably connected to the box body 11 .

[0048] The cover plate 12 can be a rectangular, square or circular plate structure. Further, the shape of the cover plate 12 matches the shape of the opening 111. Exemplarily, the opening 111 is rectangular and the cover plate 12 is a rectangular plate structure.

[0049] The cover plate 12 may be made of alloy materials such as aluminum alloy, iron alloy, or polymer materials such as polycarbonate, polyisocyanurate foam plastic, or composite materials such as glass fiber and epoxy resin.

[0050] The battery box 10 provided in one embodiment of the present application can reduce the probability of dust and the like entering the accommodating cavity of the box body 11 and causing contamination to the battery pack in the accommodating cavity of the box body 11 by providing a cover 12 and placing the cover 12 at the opening 111 of one of the outermost box bodies 11.

[0051] The battery box 10 provided in one embodiment of the present application facilitates the maintenance and replacement of the battery pack in the accommodating cavity of the box body 11 by detachably connecting the cover plate 12 to the box body 11 .

[0052] See also Figure 2-Figure 4 Furthermore, a third connecting hole 118 is provided on the cover plate 12, and a fourth connecting hole 119 is provided on one of the outermost box bodies 11. The cover plate 12 is connected to one of the outermost box bodies 11 by a second fastener passing through the third connecting hole 118 and the fourth connecting hole 119. The structure is simple and the operation is convenient.

[0053] The second fasteners may optionally be bolts and nuts.

[0054] See also Figure 1-Figure 3 In some embodiments, multiple box bodies 11 are stacked along the first direction X, and each box body 11 includes a bottom wall 113 and an opening 111 opposite to the bottom wall 113 along the first direction X. Among two adjacent box bodies 11, the bottom wall 113 of one box body 11 covers the opening 111 of the other box body 11 and is provided with a threading hole 112.

[0055] The bottom wall 113 of one box body 11 covers the opening 111 of the other box body 11, which can be understood as the bottom wall 113 of one box body 11 completely covers the opening 111 of the other box body 11. This arrangement can prevent dust and the like from entering the accommodating cavity and contaminating the battery pack in the accommodating cavity, thereby improving the protective effect of the battery box 10.

[0056] The shape of the threading hole 112 can be rectangular, square or circular.

[0057] A battery case 10 provided in one embodiment of the present application is formed by stacking a plurality of case bodies 11 along a first direction X. Since each case body 11 includes a bottom wall 113 and an opening 111 opposite to the bottom wall 113 along the first direction X, in two adjacent case bodies 11, when the bottom wall 113 of one case body 11 covers the opening 111 of the other case body 11, the threading hole 112 on the bottom wall 113 of one case body 11 can be connected to the opening 111 of the other case body 11, thereby realizing the connection between the accommodating cavities of the two adjacent case bodies 11.

[0058] See also Figure 3 and Figure 4 In some embodiments, the battery box 10 further includes a fixing beam 4 and a circuit board 5. The fixing beam 4 is placed in the accommodating cavity and connected to the box body 11. The fixing beam 4 divides the accommodating cavity into a first cavity and a second cavity. The battery pack is placed in the first cavity, and the circuit board 5 is placed in the second cavity. The wire threading hole 112 is connected to the second cavity, and the circuit board 5 is electrically connected to the battery pack.

[0059] The fixed beam 4 may be a plate-shaped structure with a rectangular, square or trapezoidal cross section.

[0060] The connection of the fixed beam 4 to the box body can be understood as the connection of the fixed beam 4 to the bottom wall 113 of the box body or the connection of the fixed beam 4 to the side wall of the box body.

[0061] There may be one, two, three or more fixed beams 4. When there are multiple fixed beams 4, the multiple fixed beams 4 are arranged at intervals.

[0062] Optionally, two fixed beams 4 are provided.

[0063] A battery box 10 provided in one embodiment of the present application realizes installation and fixation of the battery pack by providing a fixing beam 4 .

[0064] A battery box 10 provided in one embodiment of the present application realizes monitoring of the battery pack by providing a circuit board 5 .

[0065] See also Figure 1 、 Figure 2 and Figure 4In some embodiments, a first connecting hole 114 is provided on one of each two adjacent box bodies 11 among the multiple box bodies 11, and a second connecting hole 115 is provided on the other one. The two adjacent box bodies 11 are detachably connected by a first fastener passing through the first connecting hole 114 and the second connecting hole 115.

[0066] The first fasteners may optionally be bolts and nuts.

[0067] A battery case 10 provided in one embodiment of the present application has a simple structure and is easy to operate by providing a first connection hole 114 on one of every two adjacent case bodies 11 among a plurality of case bodies 11 and a second connection hole 115 on the other, and utilizing a first fastener to achieve a detachable connection between the two adjacent case bodies 11.

[0068] In some embodiments, a card slot is provided on one of every two adjacent box bodies 11 in the plurality of box bodies 11 , and a buckle is provided on the other one, and the buckle is connected to the card slot.

[0069] A battery box 10 provided in one embodiment of the present application has a card slot provided on one of every two adjacent box bodies 11 among a plurality of box bodies 11, and a buckle provided on the other. By connecting the buckle to the card slot, a detachable connection between the two adjacent box bodies 11 is achieved, which has a simple structure and is easy to operate.

[0070] See also Figure 2 In some embodiments, a positioning hole 117 is provided on one of every two adjacent box bodies 11 in the plurality of box bodies 11 , and a positioning column 116 is provided on the other one, and the positioning column 116 is inserted into the positioning hole 117 .

[0071] The positioning post 116 may be a simple three-dimensional structure such as a cuboid or a cylinder. Accordingly, the shape of the positioning hole 117 matches the shape of the positioning post 116. For example, the positioning post 116 may be a cylinder, and the shape of the positioning hole 117 may be a circle.

[0072] In a battery case 10 provided by one embodiment of the present application, a positioning hole 117 is provided on one of each two adjacent case bodies 11 among a plurality of case bodies 11, and a positioning column 116 is provided on the other. By inserting the positioning column 116 into the positioning hole 117, the positioning function is realized during the connection process of the two adjacent case bodies 11, thereby facilitating the connection of the two adjacent case bodies 11.

[0073] See also Figure 1 and Figure 2 In some embodiments, a plurality of adapters 2 are provided, and the plurality of adapters 2 are provided in different box bodies 11 .

[0074] Optionally, two, three or more adapters 2 may be provided.

[0075] A battery box 10 provided in one embodiment of the present application realizes electrical connection between the battery box 10 and multiple external devices by providing multiple adapters 2 .

[0076] Furthermore, two adapters 2 are provided, and the two adapters 2 are respectively provided on the two outermost box bodies 11. This arrangement facilitates the placement of the battery box 10, and further facilitates the electrical connection of the battery box 10 with external equipment through the adapter 2.

[0077] In some embodiments, the battery box 10 further includes a heat exchange device, which is disposed in the accommodating cavity. The box body 11 is provided with an inlet and an outlet, wherein the inlet is connected to the heat exchange device and the outlet is connected to the heat exchange device.

[0078] The heat exchange device may be a liquid cooling plate.

[0079] A battery case 10 provided in one embodiment of the present application realizes heat exchange of the battery pack in the accommodating cavity by providing a heat exchange device, an inlet and an outlet, thereby preventing the battery pack from overheating or overcooling, and improving the service life and safety performance of the battery pack.

[0080] See also Figure 2 In some embodiments, a seal 3 is provided between adjacent box bodies 11 , and the seal 3 is configured to seal the adjacent box bodies 11 .

[0081] The sealing member 3 may be a rubber ring.

[0082] The battery case 10 provided in one embodiment of the present application improves the waterproof and dustproof levels of the battery case 10 by arranging a seal 3 between adjacent case bodies 11 .

[0083] The present invention provides a battery pack comprising the aforementioned battery case 10, a battery pack, and a cable. The battery pack includes stacked battery cells. Each case 11 has a housing containing a battery pack. The cables are electrically connected to the battery cells in adjacent cases 11.

[0084] The battery pack provided in one embodiment of the present application includes the above-mentioned battery case 10, so the battery pack also has the advantages of small space occupation and high reliability.

[0085] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. A battery box, characterized in that: include: A box assembly includes a plurality of stacked box bodies, each of the box bodies including a receiving cavity for receiving a battery pack, two adjacent box bodies being connected, and the receiving cavities of two adjacent box bodies being in communication; An adapter is provided on the box body, and the adapter has a first interface and a second interface, the first interface is used for electrically connecting to the battery pack, and the second interface is used for electrically connecting to an external device.

2. The battery box according to claim 1, characterized in that: At least some of the box bodies among the multiple box bodies are provided with openings and at least some of the box bodies are provided with wire threading holes, one of two adjacent box bodies covers the opening of the other, and the accommodating cavities of two adjacent box bodies are connected through the wire threading holes.

3. The battery box according to claim 2, characterized in that: The battery box further includes a cover plate, which is placed on the opening of one of the outermost box bodies and is detachably connected to the box body.

4. The battery box according to claim 2, characterized in that: Multiple box bodies are stacked along a first direction, and each box body includes a bottom wall and an opening opposite to the bottom wall along the first direction. Among two adjacent box bodies, the bottom wall of one box body covers the opening of the other box body and is provided with the wire threading hole.

5. The battery case according to any one of claims 2 to 4, characterized in that: It also includes a fixing beam and a circuit board, wherein the fixing beam is placed in the accommodating cavity and connected to the box body, the fixing beam divides the accommodating cavity into a first cavity and a second cavity, the battery pack is placed in the first cavity, the circuit board is placed in the second cavity, the wire threading hole is connected to the second cavity, and the circuit board is electrically connected to the battery pack.

6. The battery case according to any one of claims 1 to 4, characterized in that: One of each two adjacent box bodies among the plurality of box bodies is provided with a first connecting hole, and the other is provided with a second connecting hole, and the two adjacent box bodies are detachably connected by a first fastener penetrating through the first connecting hole and the second connecting hole; And / or, one of every two adjacent box bodies among the plurality of box bodies is provided with a card slot, and the other is provided with a buckle, and the buckle is connected to the card slot.

7. The battery case according to any one of claims 1 to 4, characterized in that: One of every two adjacent box bodies in the plurality of box bodies is provided with a positioning hole, and the other is provided with a positioning column, and the positioning column is inserted into the positioning hole.

8. The battery case according to any one of claims 1 to 4, characterized in that: The battery box further includes a heat exchange device, which is disposed in the accommodating cavity. The box body is provided with an inlet and an outlet, wherein the inlet is in communication with the heat exchange device, and the outlet is in communication with the heat exchange device.

9. The battery case according to any one of claims 1 to 4, characterized in that: A sealing member is provided between adjacent box bodies, and the sealing member is configured to seal the adjacent box bodies.

10. A battery pack, characterized in that: include: The battery box according to any one of claims 1 to 9; A battery pack, comprising stacked battery cells, wherein each of the accommodating cavities of the box body is provided with the battery pack; Cables are electrically connected to the battery cells in adjacent box bodies respectively.

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