Vehicle-mounted battery

Abstract

The utility model relates to a vehicle-mounted battery. The vehicle-mounted battery comprises a shell and a battery module, the shell comprises a shell body, the shell body comprises a bottom wall and a side wall arranged on the bottom wall, and the bottom wall and the side wall form an accommodating space for accommodating the battery module; the battery module comprises a battery assembly, a binding belt and a pressing plate, the battery assembly comprises a first end plate, a plurality of battery cells and a second end plate which are arranged in the first direction, the binding belt is wound around the periphery of the battery assembly, the pressing plate is arranged on the binding belt in a pressing mode and located at the top of the battery assembly, and the two ends, in the second direction, of the pressing plate are detachably connected with the inner wall of the side enclosure wall; the second direction is perpendicular to the first direction. Through the arrangement, the battery assembly is limited by the pressing plate, the pressing plate is simple in structure and easy to process, and the production cost is reduced; and the pressing plate is arranged at the top of the battery assembly, so that the length and width of the battery cell are not limited, different battery cells can be compatible, and the space ratio of the battery cell in the battery assembly is not occupied.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to a vehicle-mounted battery. BACKGROUND

[0002] With the rapid development of the automobile field and the continuous improvement of user demand, the vehicle-mounted battery in the automobile needs to be subjected to a vibration test to ensure its stability to meet the requirements.

[0003] The current vehicle-mounted battery comprises a shell and a battery module, wherein the battery module comprises end plates and battery cells clamped between the end plates. The connection mode of the shell and the battery module is that a fastener passes through the end plates in the battery module and is connected with the bottom wall of the shell. In order to increase the stability of the vehicle-mounted battery, the number of end plates is multiple, and the multiple end plates are used to limit the position of the battery cells in the shell. However, the above fixing mode requires multiple end plates, which on the one hand leads to an increase in production cost, and on the other hand reduces the space ratio of the battery cells, affecting the storage capacity. Moreover, the multiple end plates strictly limit the size of the battery cells, which cannot be applied to the fixing work of multiple battery cells. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a vehicle-mounted battery in view of the problems of high production cost, low space ratio of battery cells and difficulty in being compatible with multiple battery cells of the current vehicle-mounted battery.

[0005] A vehicle-mounted battery comprises a shell and a battery module, wherein:

[0006] The shell comprises a shell body, the shell body comprises a bottom wall and a side wall arranged on the bottom wall, and the bottom wall and the side wall form a receiving space for accommodating the battery module;

[0007] The battery module comprises a battery assembly, a binding belt and a pressing plate, the battery assembly comprises a first end plate, a plurality of battery cells and a second end plate arranged in a first direction, the binding belt is arranged around the outer periphery of the battery assembly, the pressing plate is arranged on the binding belt, the pressing plate is located at the top of the battery assembly, both ends of the pressing plate extending in a second direction are first ends, the first ends are detachably connected with the inner wall of the side wall, and the second direction is perpendicular to the first direction.

[0008] In one of the embodiments, the shell further comprises a docking assembly arranged on the inner wall of the side wall, the docking assembly comprises a bearing and a first protruding column, both ends of the bearing are connected with the inner wall of the side wall, the bearing and the side wall form a containing space, the first protruding column is arranged on the bearing, the first protruding column is located in the containing space, and the first protruding column is detachably connected with the end of the pressing plate.

[0009] In one of the embodiments, the carrier comprises a first carrier wall and a second carrier wall connected with the first carrier wall at a set angle, the two sides of the first carrier wall and the second carrier wall away from each other are connecting sides, the connecting sides are connected with the inner wall of the side wall, and the first protruding column is arranged at the connecting position of the first carrier wall and the second carrier wall.

[0010] In one of the embodiments, the docking assembly further comprises a first reinforcing rib, the first reinforcing rib is located in the containing space, and the first reinforcing rib connects the inner wall of the side wall and the inner wall of the carrier.

[0011] In one of the embodiments, the top of the first protruding column abuts against the bottom of the pressing plate, the pressing plate is provided with a first fixing through hole at each end in the second direction, a first receiving hole is arranged on the first protruding column, a first fastener passes through the first fixing through hole, and the first fastener is arranged in the first receiving hole.

[0012] In one of the embodiments, the number of the pressing plates is plural, and the plural pressing plates are spaced apart.

[0013] In one of the embodiments, the battery module further comprises a fixing support, the first end plate and the second end plate are provided with the fixing support on the side away from the battery cell, and the fixing support is detachably connected with the bottom wall.

[0014] In one of the embodiments, the shell further comprises a fixing assembly arranged on the bottom wall, the fixing assembly comprises a second protruding column, the top of the second protruding column abuts against the bottom of the fixing support, the fixing support is provided with a second fixing through hole, a second receiving hole is arranged on the second protruding column, a second fastener passes through the second fixing through hole, and the second fastener is arranged in the second receiving hole.

[0015] In one of the embodiments, the fixing assembly further comprises a plurality of second reinforcing ribs, and the plurality of second reinforcing ribs are arranged along the outer periphery of the second protruding column.

[0016] In one of the embodiments, the fixing support comprises a fixing bottom plate and a fixing vertical plate connected with the fixing bottom plate, and the fixing bottom plate is provided with the second fixing through hole.

[0017] The aforementioned vehicle-mounted battery uses a pressure plate located on top of the battery assembly. The two ends of the pressure plate along the second direction are detachably connected to the inner wall of the side panel. This pressure plate effectively limits the battery assembly's position, eliminating the current method of using fasteners to penetrate the end plates and connect to the bottom wall of the casing for positioning. Firstly, the pressure plate structure is simple and easy to manufacture, reducing production costs. Secondly, eliminating the end plate connection method reduces the number of end plates in the battery assembly, increasing the space ratio of the battery cells without affecting the energy storage capacity. Furthermore, since the pressure plate is located on top of the battery assembly, it does not restrict the length and width dimensions of the cells, making it suitable for limiting various types of cells and offering good overall versatility. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an exploded view of the structure of the vehicle battery provided in this application.

[0021] Figure 2 for Figure 1 A schematic diagram of the shell structure.

[0022] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure 4 This is a schematic diagram of the battery module installed in the housing provided in this application.

[0024] Figure 5 for Figure 1 A schematic diagram of the battery module in the diagram.

[0025] Figure 6 for Figure 2 Enlarged schematic diagram of the structure at point B.

[0026] in:

[0027] 10. Vehicle battery; a. First direction; b. Second direction;

[0028] 100, housing; 110, shell; 111, bottom wall; 112, side wall; 113, receiving space; 120, upper cover; 130, docking assembly; 131, carrier; 1311, first carrier wall; 1312, second carrier wall; 132, first protruding column; 1321, first receiving hole; 133, accommodating space; 134, first reinforcing rib; 140, fixing assembly; 141, second protruding column; 1411, second receiving hole; 142, second reinforcing rib;

[0029] 200, battery module; 210, battery assembly; 211, first end plate; 212, battery cell; 2121, top cover; 213, second end plate; 220, binding belt; 230, pressing plate; 240, fixing support; 241, fixing bottom plate; 242, fixing vertical plate; 243, side plate; 2431, inclined wall;

[0030] 300, first fastener; 400, second fastener. DETAILED DESCRIPTION

[0031] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application.

[0032] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0034] In the present application, unless specifically defined otherwise, if there are terms such as "mount", "connect", "connect", "fix", and the like, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the present application, unless specifically defined otherwise, if there are similar descriptions such as "on" or "below" the first feature of the second feature, it means that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and are not the only embodiment.

[0037] Referring to Figure 1 and Figure 2 shown, Figure 1 shows the structure of the vehicle-mounted battery 10 in an embodiment of the present application, Figure 2 for Figure 1A structural schematic view of the shell 110 in FIG. 1. The vehicle-mounted battery 10 provided by an embodiment of the present application includes a shell 100 and a battery module 200, wherein the shell 100 includes a shell 110 and an upper cover 120 arranged on the shell 110. In a specific arrangement, the shell 110 and the upper cover 120 are detachably connected, and the shell 110 and the upper cover 120 can be in a concave-convex fit, a buckle connection or a fastener connection. The shell 110 includes a bottom wall 111 and a side wall 112 arranged on the bottom wall 111, and the bottom wall 111 and the side wall 112 form a receiving space 113 for accommodating the battery module 200. In a specific arrangement, the bottom wall 111 and the side wall 112 form a cavity structure with an open end, and the open end receives the upper cover 120.

[0038] The battery module 200 includes a battery assembly 210, a binding belt 220 and a pressing plate 230. The battery assembly 210 includes a first end plate 211, a plurality of battery cells 212 and a second end plate 213 arranged along a first direction a. In a specific arrangement, the number of battery cells 212 can be 2, 3, 5, 7 or more, and the specific number of battery cells 212 can be designed according to requirements.

[0039] The binding belt 220 is arranged around the outer periphery of the battery assembly 210, and is used to bind the first end plate 211, the second end plate 213 and the battery cells 212 between the two end plates. In a specific arrangement, the binding belt 220 is preferably a steel-plastic belt, and the arrangement path of the binding belt 220 includes extending along the height direction of the first end plate 211, then passing through the plurality of battery cells 212, and then winding back to the starting point along the height direction of the second end plate 213. In order to make the structure of the battery assembly 210 compact, the number of binding belts 220 is multiple, and the multiple binding belts 220 are arranged at intervals.

[0040] The pressing plate 230 is arranged on the binding belt 220, and the pressing plate 230 is located at the top of the battery assembly 210. The two ends of the pressing plate 230 extending along a second direction b are first ends, and the first ends are detachably connected to the inner wall of the side wall 112. The second direction b is perpendicular to the first direction a. In a specific arrangement, in order to avoid the influence of the pressing plate 230 on the top cover 2121 of the battery cell 212, the pressing plate 230 is not arranged opposite to the top cover 2121 of the battery cell 212.

[0041] The aforementioned vehicle-mounted battery 10 uses a pressure plate 230 located on top of the battery assembly 210. Both ends of the pressure plate 230 along the second direction b are detachably connected to the inner wall of the side wall 112. This pressure plate 230 limits the position of the battery assembly 210, eliminating the current method of using fasteners to penetrate the end plates and connect to the bottom wall of the casing for battery assembly positioning. On one hand, the pressure plate 230 has a simple structure and is easy to manufacture, reducing production costs. On the other hand, eliminating the end plate connection method reduces the number of end plates in the battery assembly 210, increasing the space ratio of the battery cells 212 without affecting the energy storage capacity. Furthermore, since the pressure plate 230 is located on top of the battery assembly 210, it does not restrict the length and width dimensions of the battery cells 212, making it suitable for limiting various types of cells and offering good overall versatility.

[0042] Combination Figure 3 and Figure 4 As shown, Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle. Figure 4 This is a schematic diagram of the battery module installed in the housing provided in this application. To facilitate the connection between the pressure plate 230 and the side wall 112, in a preferred embodiment, the housing 100 further includes a docking assembly 130 disposed on the inner wall of the side wall 112. The docking assembly 130 includes a support member 131 and a first protrusion 132. Both ends of the support member 131 are connected to the inner wall of the side wall 112 so that the support member 131 and the side wall 112 form a receiving space 133. The first protrusion 132 is disposed on the support member 131 and is located within the receiving space 133. The first protrusion 132 is detachably connected to one end of the pressure plate 230 along the second direction b.

[0043] It should be noted that the support member 131 is used to support the pressure plate 230, and the first protrusion 132 is connected to the pressure plate 230. This enables the pressure plate 230 to be connected to the side wall 112 through the docking assembly 130. In other words, the docking assembly 130 provides a convenient installation point for fixing the pressure plate 230 to the side wall 112, facilitating the connection between the pressure plate 230 and the side wall 112. In specific settings, the shape of the support member 131 can be any geometric shape with one open end, such as semi-circular, elliptical, or U-shaped. The open end of the support member 131 is connected to the side wall 112, and correspondingly, the shape of the accommodating space 133 formed by the support member 131 and the side wall 112 can be a semi-circular cavity, an elliptical cavity, a U-shaped cavity, etc.

[0044] In order to meet the structural strength while facilitating production, specifically, the bearing part 131 comprises a first bearing wall 1311 and a second bearing wall 1312 connected with the first bearing wall 1311 at a set angle, so that the first bearing wall 1311 and the second bearing wall 1312 are connected to form a triangular structure, thereby enhancing the stability of the bearing part 131. In a specific arrangement, the angle between the first bearing wall 1311 and the second bearing wall 1312 is preferably an obtuse angle. The two sides of the first bearing wall 1311 and the second bearing wall 1312 away from each other are connected sides, which are connected with the inner wall of the side wall 112, and the first protruding column 132 is arranged at the connection between the first bearing wall 1311 and the second bearing wall 1312.

[0045] In order to strengthen the structural strength of the docking assembly 130, specifically, the docking assembly 130 further comprises a first reinforcing rib 134, which is located in the accommodation space 133, and the first reinforcing rib 134 is connected with the inner wall of the side wall 112 and the inner wall of the bearing part 131. In a specific arrangement, the number of the first reinforcing rib 134 is multiple, and the multiple first reinforcing ribs 134 are arranged at intervals, and the first reinforcing rib 134 is also arranged between the first protruding column 132 and the side wall 112, so as to increase the strength of the docking assembly 130.

[0046] In order to more conveniently realize the detachable connection between the first protruding column 132 and the pressing plate 230, specifically, the top of the first protruding column 132 abuts against the bottom of the pressing plate 230, the pressing plate 230 is provided with a first fixing through hole at both ends in the second direction b, and the first protruding column 132 is provided with a first receiving hole 1321, and the first fastener 300 passes through the first fixing through hole and is arranged in the first receiving hole 1321. It should be noted that in the current mode of connecting the end plate with the bottom wall 111 of the shell 100 by using the fastener, the fastener has a long penetrating path, and the fastener is preferably a long screw, which is prone to alignment deviation during installation, which is not conducive to assembly. In the present application, the docking assembly 130 is arranged on the inner wall of the side wall 112, and the top of the first protruding column 132 in the docking assembly 130 abuts against the bottom of the pressing plate 230, and when the first fastener 300 is used to connect the pressing plate 230 and the first protruding column 132, the penetrating path of the first fastener 300 is shortened, and the assembly can be efficiently completed, and the first fastener 300 is preferably a short screw.

[0047] In combination with Figure 5 as shown, Figure 5 In order to Figure 1A structural schematic view of the battery module in FIG. 1. In order to ensure the firmness of the battery assembly 210, one preferred embodiment is that the number of the pressing plates 230 is multiple, and the multiple pressing plates 230 are spaced. In the specific arrangement, the number of the pressing plates 230 can be 2, 3, 5, 7, and more, and each pressing plate 230 is distributed at both ends of the second direction b corresponding to one docking assembly 130, so as to quickly realize the positioning of the pressing plate 230 to the battery assembly 210.

[0048] In combination with Figure 6 as shown, Figure 6 for Figure 2 A structural enlarged schematic view at B in FIG. 1. In order to better prevent the battery assembly 210 from generating displacement during the vibration test, one preferred embodiment is that the battery module 200 further comprises a fixing support 240, and the first end plate 211 and the second end plate 213 are provided with the fixing support 240 away from one side of the battery cell 212, and the fixing support 240 is detachably connected with the bottom wall 111. Through the above arrangement, the connection between the battery assembly 210 and the shell 100 is strengthened by using the fixing support 240, and the battery assembly 210 is more firmly fixed in the shell 100, which is beneficial to prevent the battery assembly 210 from generating displacement in the vibration test.

[0049] In order to more conveniently realize the detachable connection of the fixing support 240 and the bottom wall 111, specifically, the shell 100 further comprises a fixing assembly 140 provided on the bottom wall 111, and the fixing assembly 140 comprises a second protruding column 141, the top of the second protruding column 141 abuts against the bottom of the fixing support 240, the fixing support 240 is provided with a second fixing through hole, and the second protruding column 141 is provided with a second receiving hole 1411, and the second fastener 400 passes through the second fixing through hole and is arranged in the second receiving hole 1411.

[0050] Through the above arrangement, the distance between the fixing support 240 and the bottom wall 111 is shortened by using the fixing assembly 140, that is, the passing path of the second fastener 400 is shortened, and the second fastener 400 adopts a short screw to realize the indirect connection between the fixing support 240 and the bottom wall 111, avoiding the alignment deviation during the installation of the long screw, which is not conducive to assembly. In the specific arrangement, the fixing support 240 is at the middle position of the end plate along the height direction of the end plate, which is convenient for the connection between the battery module 200 and the shell 100 after the battery module 200 is put into the shell.

[0051] To strengthen the structural strength of the second convex column 141, more specifically, the fixing assembly 140 further comprises a plurality of second reinforcing ribs 142, which are arranged along the outer periphery of the second convex column 141. In a specific arrangement, the number of second reinforcing ribs 142 can be 2, 4, 8, 10 or more, and each second reinforcing rib 142 extends along the height direction of the second convex column 141 to be connected with the bottom wall 111.

[0052] To facilitate the design of the fixing support 240, more specifically, the fixing support 240 comprises a fixing bottom plate 241 and a fixing vertical plate 242 connected with the fixing bottom plate 241, the fixing bottom plate 241 is provided with a second fixing through hole, and the fixing vertical plate 242 is detachably connected with the corresponding end plate through a fastener. In a specific arrangement, the fixing support 240 further comprises side plates 243 arranged on the opposite sides of the fixing vertical plate 242, and the outer wall of the side plate 243 is arranged as an inclined wall 2431 to facilitate the entry of the battery module 200 into the shell. Through the above arrangement, the fixing support 240 has a simple structure, low cost, and is beneficial to the cost reduction and efficiency improvement of enterprises.

[0053] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0054] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A vehicle-mounted battery, characterized in that, The vehicle battery includes a casing and a battery module, wherein: The outer casing includes a housing, the housing includes a bottom wall and a side wall disposed on the bottom wall, the bottom wall and the side wall forming a receiving space for accommodating the battery module; The battery module includes a battery assembly, a binding strap, and a pressure plate. The battery assembly includes a first end plate, multiple battery cells, and a second end plate arranged along a first direction. The binding strap is wrapped around the outer periphery of the battery assembly, and the pressure plate is pressed onto the binding strap. The pressure plate is located on the top of the battery assembly. The two ends of the pressure plate extending along a second direction are the first ends. The first ends are detachably connected to the inner wall of the side wall. The second direction is perpendicular to the first direction.

2. The vehicle battery according to claim 1, characterized in that, The outer casing also includes a docking assembly disposed on the inner wall of the side enclosure. The docking assembly includes a support member and a first protrusion. Both ends of the support member are connected to the inner wall of the side enclosure. The support member and the side enclosure form an accommodating space. The first protrusion is disposed on the support member and is located within the accommodating space. The first protrusion is detachably connected to the end of the pressure plate.

3. The vehicle battery according to claim 2, characterized in that, The support member includes a first support wall and a second support wall connected to the first support wall at a set angle. The two sides of the first support wall and the second support wall that are opposite to each other are both connection sides. The connection sides are connected to the inner wall of the side enclosure wall. The first protruding post is disposed at the connection between the first support wall and the second support wall.

4. The vehicle battery according to claim 2, characterized in that, The docking assembly further includes a first reinforcing rib, which is located in the receiving space and connects the inner wall of the side wall to the inner wall of the bearing member.

5. The vehicle battery according to claim 2, characterized in that, The top of the first protrusion abuts against the bottom of the pressure plate. The pressure plate has a first fixing through hole at each end along the second direction. The first protrusion has a first receiving hole. The first fastener passes through the first fixing through hole and is disposed in the first receiving hole.

6. The vehicle battery according to claim 1, characterized in that, The number of pressure plates is multiple, and the multiple pressure plates are spaced apart.

7. The vehicle battery according to claim 1, characterized in that, The battery module also includes a fixing bracket. The fixing bracket is provided on the side of the first end plate and the second end plate away from the battery cell. The fixing bracket is detachably connected to the bottom wall.

8. The vehicle battery according to claim 7, characterized in that, The housing also includes a fixing component disposed on the bottom wall. The fixing component includes a second protrusion, the top of which abuts against the bottom of the fixing bracket. The fixing bracket has a second fixing through hole, and the second protrusion has a second receiving hole. A second fastener passes through the second fixing through hole and is disposed in the second receiving hole.

9. The vehicle battery according to claim 8, characterized in that, The fixing component also includes a plurality of second reinforcing ribs, which are spaced apart along the outer periphery of the second protrusion.

10. The vehicle battery according to claim 8, characterized in that, The fixed bracket includes a fixed base plate and a fixed upright plate connected to the fixed base plate, and the fixed base plate has a second fixed through hole.

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