Battery box body, battery pack and battery cluster

Abstract

The utility model relates to the technical field of energy storage, and provides a battery box body, a battery pack and a battery cluster, and the battery box body is used for accommodating a battery cell module and comprises a top plate and a bottom plate which are oppositely arranged; the top plate is provided with an opening and a first annular connecting part; the first annular connection portion is located at an edge of the opening such that the opening is located within a ring of the first annular connection portion. The bottom plate is provided with a second annular connecting part; the second annular connecting part is matched with the first annular connecting part in shape and size. The first annular connecting part of one battery box body is used for being adaptively connected with the second annular connecting part of the other battery box body, so that the two battery box bodies are hermetically connected. Therefore, the top plate of one battery box body can be hermetically connected with the bottom plate of another battery box body, so that the plurality of battery box bodies can be hermetically connected in sequence along the vertical direction, water or dust can be prevented from entering the connecting parts of adjacent battery packs, and the stability of the battery cluster during operation can be improved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, specifically to a battery housing, a battery pack, and a battery cluster. Background Technology

[0002] Battery clusters are a common type of energy storage device used to store electrical energy.

[0003] To increase the capacity of a battery cluster, its size generally needs to be increased; however, an excessively large size makes transportation and installation inconvenient. To solve this problem, multiple battery modules are connected vertically in sequence to form a battery cluster.

[0004] However, when using the above solution, there is a risk of water or dust entering the connection points of adjacent battery modules, which is not conducive to the normal operation of the battery cluster. Utility Model Content

[0005] This application provides a battery housing, a battery pack, and a battery cluster. The battery housing is used to house the cell modules and includes a top plate and a bottom plate arranged opposite each other. The top plate has a first annular connecting portion, and the bottom plate has a second annular connecting portion. The shape and size of the second annular connecting portion are adapted to the first annular connecting portion. The first annular connecting portion of one battery housing is adapted to connect with the second annular connecting portion of another battery housing to seal the connection between the two battery housings. In this way, multiple battery housings can be sequentially and sealed in a vertical direction, thereby ensuring increased battery cluster capacity and facilitating the transportation and installation of the battery clusters, while preventing water or dust from entering the connection points of adjacent battery packs, thus improving the stability of the battery cluster during operation.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a battery housing for accommodating a battery cell module, comprising a top plate and a bottom plate disposed opposite to each other; the top plate is provided with an opening and a first annular connecting portion; the first annular connecting portion is located at the edge of the opening, such that the opening is located within the annulus of the first annular connecting portion;

[0008] The base plate is provided with a second annular connecting part; the shape and size of the second annular connecting part are adapted to the first annular connecting part.

[0009] The first annular connecting portion of one of the battery housings is adapted to connect with the second annular connecting portion of the other battery housing, so that the two battery housings are sealed together.

[0010] As an optional implementation, the first annular connecting portion includes an annular connecting protrusion, and the second annular connecting portion includes an annular connecting groove, wherein the shape and size of the annular connecting protrusion and the annular connecting groove are adapted to each other.

[0011] As an optional implementation, the first annular connecting portion is a flexible sealing portion.

[0012] As an optional implementation, the top plate and the opening have the same shape and area, so that the battery box is a groove.

[0013] As an optional implementation, the battery box is rectangular in shape; the top plate and the bottom plate are the two largest box plates in the battery box.

[0014] As an optional implementation, the battery housing includes multiple side panels, edge integrated reinforcements, and central integrated reinforcements;

[0015] The edges of the multiple side plates are fixedly connected to the edge of the base plate and together with the base plate form a receiving cavity, which is used to accommodate the battery cell module;

[0016] The edge integrated reinforcement includes a base plate reinforcement and a side plate reinforcement that are connected to each other; the edge integrated reinforcement is disposed along the edge of the base plate so that each base plate reinforcement is fixedly connected to the base plate and each side plate reinforcement is fixedly connected to the side plate;

[0017] The central integrated reinforcing member is fixedly connected to the center of the base plate; both the edge integrated reinforcing member and the central integrated reinforcing member are integral parts.

[0018] As an optional implementation, the battery housing includes a bottom reinforcing beam;

[0019] The bottom reinforcing beam is fixedly connected to the inner wall of the base plate and is located on one side of the central integrated reinforcing member; both ends of the bottom reinforcing beam are fixedly connected to the side plate respectively.

[0020] As an optional implementation, the bottom reinforcing beam is a straight beam, and the base plate is a rectangular plate; the axis of the bottom reinforcing beam is parallel to the short side of the base plate;

[0021] Three bottom reinforcing beams are respectively provided on both sides of the central integrated reinforcing member; along the direction from the edge integrated reinforcing member to the central integrated reinforcing member, the three bottom reinforcing beams are, in sequence, the first reinforcing beam, the second reinforcing beam, and the third reinforcing beam;

[0022] The distance between the edge integrated reinforcement and the first reinforcing beam is d1, the distance between the first reinforcing beam and the second reinforcing beam is d2, the distance between the second reinforcing beam and the third reinforcing beam is d3, and the distance between the third reinforcing beam and the central integrated reinforcement is d4; wherein d1:d2:d3:d4 = 1.5:1:1:1.5.

[0023] Secondly, this application provides a battery pack, the battery pack including the battery housing and cell module as described in any of the first aspects above, the cell module being located inside the battery housing.

[0024] As an optional implementation, the number of battery cell modules is four, and the four battery cell modules are arranged in two rows and two columns.

[0025] As an optional implementation, the battery pack includes a liquid cooling plate, the first surface of which is bonded to the cell module, and the second surface of which is bonded to the bottom plate of the battery housing;

[0026] And / or, the battery pack includes a data acquisition device; the data acquisition device is disposed on the side plate of the battery housing and is electrically connected to the cell module;

[0027] And / or, the battery pack includes a screw; the cell module includes a module end plate, the module end plate is provided with a screw hole, the screw passes through the screw hole and is fixedly connected to the battery housing.

[0028] Thirdly, this application provides a battery cluster, the battery cluster comprising a plurality of battery packs as described in any of the second aspects above; the plurality of battery packs are stacked in a vertical direction;

[0029] The first annular connecting portion of the battery box of the battery pack is adapted to connect with the second annular connecting portion of the other battery box, so that the two battery boxes are sealed together.

[0030] As an optional implementation, the battery cluster includes a high-voltage wiring harness connected to the cell modules of each battery pack;

[0031] And / or, the battery cluster includes a low-voltage wiring harness connected to a data acquisition unit in each of the battery packs.

[0032] Compared with the prior art, the beneficial effects of this application are at least as follows:

[0033] The battery housing includes a top plate and a bottom plate arranged opposite each other; the top plate has a first annular connecting portion, and the bottom plate has a second annular connecting portion; the shape and size of the second annular connecting portion are adapted to the first annular connecting portion; the first annular connecting portion of one battery housing is used to adapt and connect with the second annular connecting portion of another battery housing, so that the two battery housings are sealed together. In this way, the top plate of one battery housing can be sealed to the bottom plate of another battery housing, allowing multiple battery housings to be sequentially sealed together vertically. This ensures increased battery pack capacity and facilitates transportation and installation of the battery packs, while preventing water or dust from entering the connection points of adjacent battery packs, thus improving the stability of the battery pack during operation.

[0034] The battery housing is used to house the battery cell modules, which store electrical energy to achieve the energy storage purpose of the battery cluster. Furthermore, the battery housing also provides protection for the battery cell modules.

[0035] Because the top plate has an opening, it is easy to place the battery cell module into the battery box through the opening. Since the first annular connecting part is located at the edge of the opening, the opening is positioned within the ring of the first annular connecting part. This ensures that when the first and second annular connecting parts are fitted together, the edge of the opening is completely sealed, thus further guaranteeing the airtightness of the connection between the two battery boxes. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of a battery box provided in an embodiment of this application;

[0038] Figure 2 for Figure 1 Left view of the middle battery box;

[0039] Figure 3 For multiple Figure 1 A schematic diagram of the structure when the battery box is sealed and connected in the vertical direction to form the battery cluster shell;

[0040] Figure 4 An exploded view of a battery cluster provided in an embodiment of this application;

[0041] Figure 5 for Figure 1 Another structural diagram of the battery box;

[0042] Figure 6 for Figure 5 Top view of the battery compartment;

[0043] Figure 7 This is a schematic diagram of a battery pack portion structure provided in an embodiment of this application;

[0044] Figure 8 for Figure 7 Exploded view of the battery pack;

[0045] Figure 9 for Figure 7 A partial cross-sectional view of the battery pack formed by cutting it with a plane perpendicular to the bottom plate of the battery box;

[0046] Figure 10 for Figure 7 A schematic diagram of the structure of a cell module in the battery pack.

[0047] Explanation of reference numerals in the attached figures:

[0048] 100-Battery cluster, 120-High voltage wiring harness, 130-Low voltage wiring harness, 140-Coolant pipe, 150-Panel, 110-Battery pack, 112-Cell module, 1121-Module end plate, 11211-Screw hole, 113-Liquid cooling plate, 114-Data acquisition component, 111-Battery housing, 1111-Top plate, 1112-Bottom plate, 1113-Opening, 1114-First annular connection part, 1114 1- Annular connecting protrusion; 1115- Second annular connecting part; 11151- Annular connecting groove; 1116- Side plate; 1117- Edge integrated reinforcement; 11171- Bottom plate reinforcement; 11172- Side plate reinforcement; 1118- Middle integrated reinforcement; 1119- Receiving cavity; 1120- Bottom reinforcing beam; 11201- First reinforcing beam; 11202- Second reinforcing beam; 11203- Third reinforcing beam. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0050] Battery clusters are a common type of energy storage device used to store electrical energy. To continuously power high-power devices for extended periods, the capacity of the battery cluster needs to be increased. A common method to increase the capacity of a battery cluster is to increase the number of cells it contains. However, this increases the overall size of the battery cluster, making it too large for transportation and installation.

[0051] To address the aforementioned issues, existing technologies connect multiple battery modules sequentially along a vertical direction to form a battery cluster. This allows for the individual transport and installation of each battery cell module, making the transport and installation of the battery cluster more convenient.

[0052] However, when using the above solution, the connection points between adjacent battery modules cannot be completely sealed, which poses a risk of water or dust ingress, thus hindering the normal operation of the battery cluster.

[0053] To address the aforementioned technical problems, the battery housing provided by this utility model solves these issues by respectively providing a first annular connecting portion and a second annular connecting portion on the top and bottom plates, which are arranged opposite to each other. Specifically, the battery housing includes a top plate and a bottom plate arranged opposite to each other; the top plate is provided with a first annular connecting portion, and the bottom plate is provided with a second annular connecting portion; the shape and size of the second annular connecting portion are adapted to the first annular connecting portion; the first annular connecting portion of one battery housing is used to adapt and connect with the second annular connecting portion of another battery housing, so that the two battery housings are sealed together. In this way, the top plate of one battery housing can be sealed to the bottom plate of another battery housing, allowing multiple battery housings to be sequentially sealed together in a vertical direction. This ensures increased battery pack capacity and facilitates transportation and installation of the battery packs, while preventing water or dust from entering the connection points of adjacent battery packs, thus improving the stability of the battery pack during operation.

[0054] The battery housing is used to house the battery cell modules, which store electrical energy to achieve the energy storage purpose of the battery cluster. Furthermore, the battery housing also provides protection for the battery cell modules.

[0055] Because the top plate has an opening, it is easy to place the battery cell module into the battery box through the opening. Since the first annular connecting part is located at the edge of the opening, the opening is positioned within the ring of the first annular connecting part. This ensures that when the first and second annular connecting parts are fitted together, the edge of the opening is completely sealed, thus further guaranteeing the airtightness of the connection between the two battery boxes.

[0056] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0057] The following provides a detailed description of the specific structure of the battery housing and various possible implementation methods.

[0058] Figure 1 This is a schematic diagram of the structure of a battery housing 111 provided in an embodiment of this application. Figure 2 for Figure 1 Left view of the battery housing 111 Figure 3 For multiple Figure 1 A schematic diagram of the structure when the battery box 111 is sealed and connected in the vertical direction to form the battery cluster shell. Figure 4 An exploded view of a battery cluster 100 provided in an embodiment of this application.

[0059] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The battery housing 111 is used to accommodate the battery cell module 112, and includes a top plate 1111 and a bottom plate 1112 disposed opposite to each other. The top plate 1111 has an opening 1113 and a first annular connecting portion 1114. The first annular connecting portion 1114 is located at the edge of the opening 1113, so that the opening 1113 is located within the ring of the first annular connecting portion 1114. The bottom plate 1112 has a second annular connecting portion 1115. The shape and size of the second annular connecting portion 1115 are adapted to the first annular connecting portion 1114. The first annular connecting portion 1114 of one battery housing 111 is adapted to connect with the second annular connecting portion 1115 of the other battery housing 111, so that the two battery housings 111 are sealed together.

[0060] In this embodiment, the battery housing 111 includes a top plate 1111 and a bottom plate 1112 disposed opposite to each other. The top plate 1111 is provided with a first annular connecting portion 1114, and the bottom plate 1112 is provided with a second annular connecting portion 1115. The shape and size of the second annular connecting portion 1115 are adapted to the first annular connecting portion 1114. The first annular connecting portion 1114 of one battery housing 111 is adapted to connect with the second annular connecting portion 1115 of another battery housing 111, so that the two battery housings 111 are sealed together. In this way, the top plate 1111 of such a battery housing 111 can be sealed together with the bottom plate 1112 of another battery housing 111, so that multiple battery housings 111 can be sealed together in sequence along the vertical direction. This not only ensures increased capacity of the battery cluster 100 and facilitates transportation and installation of the battery cluster 100, but also prevents water or dust from entering the connection parts of adjacent battery packs 110, thus improving the stability of the battery cluster 100 during operation.

[0061] The battery housing 111 is used to house the cell module 112, which stores electrical energy to enable the battery cluster 100 to achieve energy storage. Furthermore, the battery housing 111 also provides protection for the cell module 112.

[0062] Because the top plate 1111 has an opening 1113, it is easy to place the battery cell module 112 into the battery housing 111 through the opening 1113. Since the first annular connecting portion 1114 is located at the edge of the opening 1113, the opening 1113 is positioned within the ring of the first annular connecting portion 1114. Thus, when the first annular connecting portion 1114 and the second annular connecting portion 1115 are fitted together, the edge of the opening 1113 can be completely sealed, thereby further ensuring the sealing of the connection between the two battery housings 111.

[0063] It should be noted that the battery box 111 is made of metal sheet. In addition to metal sheet, the battery box 111 can also be made of other types of sheet material. This application embodiment does not limit this.

[0064] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 4 The first annular connecting part 1114 includes an annular connecting protrusion 11141, and the second annular connecting part 1115 includes an annular connecting groove 11151. The annular connecting protrusion 11141 and the annular connecting groove 11151 are adapted in shape and size.

[0065] In this way, the annular connecting protrusion 11141 can be inserted into the annular connecting groove 11151 to achieve a sealed connection between the first annular connecting part 1114 and the second annular connecting part 1115. In addition, when the annular connecting protrusion 11141 is connected to the annular connecting groove 11151, relative movement between the two connected battery boxes 111 can be avoided, thus improving the structural stability of the battery cluster 100.

[0066] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 4 The first annular connecting part 1114 is a flexible sealing part.

[0067] When the flexible sealing part is adapted to and connected with the second annular connecting part 1115, the flexible sealing part can deform, thereby avoiding the formation of gaps between the flexible sealing part and the second annular connecting part 1115, thus further improving the sealing performance of the connection part of the two battery boxes 111.

[0068] It should be noted that the first annular connecting part 1114 is a flexible structure as a whole, that is, the annular connecting protrusion 11141 is also a flexible structure.

[0069] It should also be noted that the aforementioned flexible sealing part can be an elastic element or a plastic element. When it is an elastic element, it can be a rubber element or a silicone element, or a structural element made of other materials; this application does not limit this.

[0070] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 4 The top plate 1111 and the opening 1113 have the same shape and area, so that the battery box 111 is a groove.

[0071] At this time, the entire top plate 1111 of the battery housing 111 is set as an opening 1113, which makes it easier to place the cell module 112 inside the battery housing 111, thereby improving the production efficiency of the battery cluster 100. In addition, setting the entire top plate 1111 of the battery housing 111 as an opening 1113 can save the profile of the battery housing 111, thus helping to reduce the production cost of the battery housing 111.

[0072] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 4 The battery box 111 is rectangular in shape; the top plate 1111 and the bottom plate 1112 are the two largest box plates in the battery box 111.

[0073] Since the shape of the cell module 112 is generally cuboid, setting the shape of the battery box 111 to cuboid can adapt to the shape of the cell module 112, which helps to reduce the gaps inside the battery box 111, thus helping to reduce the volume of the battery cluster 100.

[0074] Since the top plate 1111 and the bottom plate 1112 of the battery box 111 are the two largest box plates in the battery box 111, when the bottom plate 1112 of the battery box 111 is set horizontally and multiple battery boxes 111 are sequentially sealed and connected in the vertical direction, the total height of the battery cluster 100 is minimized, which helps to improve the structural stability of the battery cluster 100.

[0075] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The battery housing 111 includes multiple side plates 1116, edge integrated reinforcement members 1117, and central integrated reinforcement members 1118. The edges of the multiple side plates 1116 are fixedly connected to the edges of the base plate 1112, and together with the base plate 1112, they form a receiving cavity 1119, which is used to receive the battery cell module 112.

[0076] The edge integrated reinforcement 1117 includes a base plate reinforcement 11171 and a side plate reinforcement 11172 that are interconnected. The edge integrated reinforcement 1117 is disposed along the edge of the base plate 1112, such that each base plate reinforcement 11171 is fixedly connected to the base plate 1112 and each side plate reinforcement 11172 is fixedly connected to the side plate 1116. The central integrated reinforcement 1118 is fixedly connected to the center of the base plate 1112; both the edge integrated reinforcement 1117 and the central integrated reinforcement 1118 are integral parts.

[0077] In this embodiment, the battery housing 111 includes a base plate 1112, multiple side plates 1116, edge integrated reinforcement members 1117, and a central integrated reinforcement member 1118. The edges of the multiple side plates 1116 are fixedly connected to the edges of the base plate 1112, and together with the base plate 1112, they form a receiving cavity 1119 for accommodating the battery cell module 112. Thus, the battery housing 111 can protect the battery cell module 112, fulfilling the basic function of the battery housing 111.

[0078] Since the central integrated reinforcing member 1118 is fixedly connected to the center of the base plate 1112, and the central integrated reinforcing member 1118 is a single piece, it can replace the combination of the partition beam and the two structural beams on both sides of the partition beam in the prior art, that is, one component replaces three components in the prior art. Since the edge integrated reinforcing member 1117 includes interconnected base plate reinforcing parts 11171 and side plate reinforcing parts 11172; the edge integrated reinforcing member 1117 is disposed along the edge of the base plate 1112, such that each base plate reinforcing part 11171 is fixedly connected to the base plate 1112 and each side plate reinforcing part 11172 is fixedly connected to the side plate 1116, and the edge integrated reinforcing member 1117 is a single piece, it can replace the combination of the end structural beams and frame beams in the prior art, that is, one component replaces two components in the prior art. Therefore, the aforementioned edge integrated reinforcement 1117 and central integrated reinforcement 1118 can both improve the integration of the battery box 111, thereby simplifying the structure of the battery box 111, reducing the manufacturing difficulty of the battery box 111, and thus improving the production efficiency and reducing the production cost of the battery box 111.

[0079] Furthermore, since the edge integrated reinforcement 1117 includes an interconnected base plate reinforcement 11171 and a side plate reinforcement 11172, and the edge integrated reinforcement 1117 is disposed along the edge of the base plate 1112, such that each base plate reinforcement 11171 is fixedly connected to the base plate 1112 and each side plate reinforcement 11172 is fixedly connected to the side plate 1116. That is, the edge integrated reinforcement 1117 is disposed along the short side of the base plate 1112, thereby avoiding a gap between the edge integrated reinforcement 1117 and the short side of the base plate 1112. In this way, all the space within the receiving cavity 1119 of the battery box 111 can accommodate the cell module 112, thereby making full use of the internal space of the battery box 111 and thus improving the energy density of the battery pack 110.

[0080] It should be noted that the battery box 111 is made of pressed metal sheet, and the bottom plate 1112 and multiple side plates 1116 of the battery box 111 are formed from the same metal sheet through cutting, bending and welding. Therefore, the battery box 111 has good integrity. In addition, the battery box 111 can be made of other materials besides metal sheet, and this application embodiment does not limit this.

[0081] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The battery housing 111 includes a bottom reinforcing beam 1120. The bottom reinforcing beam 1120 is fixedly connected to the inner wall of the base plate 1112 and is located on one side of the central integrated reinforcing member 1118; both ends of the bottom reinforcing beam 1120 are fixedly connected to the side plates 1116 respectively.

[0082] In this way, the bottom reinforcing beam 1120 can connect the two oppositely arranged long sides of the base plate 1112, thereby further increasing the stiffness of the base plate 1112 along the short side direction, and thus further increasing the structural strength of the battery box 111. The bottom reinforcing beam 1120 is welded to the inner wall of the base plate 1112, which further enhances the overall strength of the battery box 111.

[0083] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The bottom reinforcing beam 1120 is a straight beam, and the base plate 1112 is a rectangular plate; the axis of the bottom reinforcing beam 1120 is parallel to the short side of the base plate 1112. Three bottom reinforcing beams 1120 are respectively arranged at intervals on both sides of the central integrated reinforcing member 1118; along the direction from the edge integrated reinforcing member 1117 to the central integrated reinforcing member 1118, the three bottom reinforcing beams 1120 are, in sequence, the first reinforcing beam 11201, the second reinforcing beam 11202, and the third reinforcing beam 11203. The distance between the edge integrated reinforcement 1117 and the first reinforcing beam 11201 is d1, the distance between the first reinforcing beam 11201 and the second reinforcing beam 11202 is d2, the distance between the second reinforcing beam 11202 and the third reinforcing beam 11203 is d3, and the distance between the third reinforcing beam 11203 and the central integrated reinforcement 1118 is d4; wherein d1:d2:d3:d4 = 1.5:1:1:1.5.

[0084] In this embodiment, since the bottom reinforcing beam 1120 is a straight beam, and straight beams have greater stiffness, this further enhances the structural strength of the battery box 111. Because the axis of the bottom reinforcing beam 1120 is parallel to the short side of the base plate 1112, the length of the bottom reinforcing beam 1120 is minimized while ensuring the connection of the two long sides of the base plate 1112. Furthermore, the axis of the bottom reinforcing beam 1120 is perpendicular to the long side of the base plate 1112, thus further enhancing the structural strength of the battery box 111.

[0085] Furthermore, three bottom reinforcing beams 1120 are spaced apart on both sides of the central integrated reinforcing member 1118. This further enhances the structural strength of the battery box 111 compared to a solution with only one bottom reinforcing beam 1120. Tests show that, with three bottom reinforcing beams 1120 spaced apart on both sides of the central integrated reinforcing member 1118, the structural strength of the battery box 1111 is maximized when the distance between the edge integrated reinforcing member 1117 and the first reinforcing beam 11201 is d1, the distance between the first reinforcing beam 11201 and the second reinforcing beam 11202 is d2, the distance between the second reinforcing beam 11202 and the third reinforcing beam 11203 is d3, and the distance between the third reinforcing beam 11203 and the central integrated reinforcing member 1118 is d4, and d1:d2:d3:d4 = 1.5:1:1:1.5.

[0086] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 This application embodiment also provides a battery pack 110, which includes any of the above-mentioned battery housing 111 and cell module 112, with the cell module 112 located inside the battery housing 111.

[0087] In this embodiment, the battery housing 111 includes a top plate 1111 and a bottom plate 1112 arranged opposite to each other. The top plate 1111 is provided with a first annular connecting portion 1114, and the bottom plate 1112 is provided with a second annular connecting portion 1115. The shape and size of the second annular connecting portion 1115 are adapted to the first annular connecting portion 1114. The first annular connecting portion 1114 of one battery housing 111 is adapted to connect with the second annular connecting portion 1115 of another battery housing 111, so that the two battery housings 111 are sealed together. In this way, the top plate 1111 of such a battery housing 111 can be sealed together with the bottom plate 1112 of another battery housing 111, so that multiple battery housings 111 can be sealed together in sequence along the vertical direction. This not only ensures increased capacity of the battery cluster 100 and facilitates transportation and installation of the battery cluster 100, but also prevents water or dust from entering the connection parts of adjacent battery packs 110, thus improving the stability of the battery cluster 100 during operation.

[0088] The battery housing 111 is used to house the cell module 112. The cell module 112 is used to store electrical energy, enabling the battery cluster 100 to achieve the purpose of energy storage. In addition, the battery housing 111 can protect the cell module 112, thereby extending the service life of the battery pack 110, and thus extending the service life of the battery cluster 100.

[0089] Because the top plate 1111 has an opening 1113, it is convenient to place the cell module 112 into the battery box 111 through the opening 1113, thereby improving the installation efficiency of the battery pack 110. Since the first annular connecting part 1114 is located at the edge of the opening 1113, the opening 1113 is located within the ring of the first annular connecting part 1114. Thus, when the first annular connecting part 1114 and the second annular connecting part 1115 are fitted together, the edge of the opening 1113 can be completely sealed, thereby further ensuring the sealing of the connection between the two battery boxes 111, and also further ensuring the sealing of the connection between the two battery packs 110.

[0090] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 There are four battery cell modules 112, which are arranged in two rows and two columns.

[0091] In this embodiment, a partition is provided in the middle of the battery box 111 along the longest side extension direction. The partition divides the battery box 111 into two battery cavities of equal size. Each battery cavity accommodates two parallel battery cell modules 112, so that the four battery cell modules 112 are arranged in two rows and two columns.

[0092] Tests have shown that when the battery pack 110 includes four cell modules 112, its weight is manageable by a single technician. This means that the battery pack 110's capacity can be maximized while ensuring easy installation of the battery cluster 100.

[0093] It should be noted that the above-mentioned cell module 112 includes two rows of square cells arranged side by side, with 13 cells in each row, and each cell module 112 includes 26 cells.

[0094] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 3 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The battery pack 110 includes a liquid cooling plate 113. The first surface of the liquid cooling plate 113 is bonded to the cell module 112, and the second surface of the liquid cooling plate 113 is bonded to the bottom plate 1112 of the battery housing 111. The first and second surfaces of the liquid cooling plate 113 are arranged opposite to each other.

[0095] The liquid cooling plate 113 is used to absorb the heat generated by the cell module 112 during operation, thus improving the heat dissipation capacity of the battery pack 110. Since the first surface of the liquid cooling plate 113 is bonded to the cell module 112 and the second surface of the liquid cooling plate 113 is bonded to the bottom plate 1112 of the battery housing 111, the cell module 112, the liquid cooling plate 113 and the bottom plate 1112 of the battery housing 111 can be connected as a whole, thus enhancing the structural stability of the battery pack 110.

[0096] It should be noted that the adhesive layer thickness between the first surface of the liquid cooling plate 113 and the battery cell module 112 is 1.5mm. Tests have shown that when the adhesive layer thickness is set to 1.5mm, the heat dissipation speed of the battery cell module 112 can be guaranteed while ensuring bonding strength.

[0097] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 3 , Figure 7 , Figure 8 , Figure 9 and Figure 10The battery pack 110 includes a data acquisition unit 114; the data acquisition unit 114 is disposed on the side plate of the battery housing 111 and is electrically connected to the cell module 112.

[0098] Since the data acquisition device 114 is located on the side panel of the battery housing 111, it can be prevented from being damaged by the battery housing 111 when the battery pack 110 is connected. Furthermore, since the data acquisition device 114 is electrically connected to the cell module 112, it can collect relevant parameters of the cell module 112 to achieve automatic control of the cell module 112.

[0099] Specifically, the data acquisition device 114 can acquire the temperature or voltage of the battery cell module 112, or it can acquire other types of parameters.

[0100] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 3 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The battery pack 110 includes a screw; the cell module 112 includes a module end plate 1121, the module end plate 1121 is provided with a screw hole 11211, the screw passes through the screw hole 11211 and is fixedly connected to the battery box 111.

[0101] In this way, the screw can fix the module end plate 1121 to the battery box 111, and the screw can fix the cell module 112 to the battery box 111, thus enhancing the structural stability of the battery pack 110.

[0102] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 This application embodiment also provides a battery cluster 100, which includes a plurality of battery packs 110 as described above; the plurality of battery packs 110 are stacked in a vertical direction. The first annular connecting portion 1114 of the battery housing 111 of the battery pack 110 is adapted to and connected to the second annular connecting portion 1115 of another battery housing 111, so that the two battery housings 111 are sealed together.

[0103] In this embodiment, the battery housing 111 includes a top plate 1111 and a bottom plate 1112 disposed opposite to each other. The top plate 1111 is provided with a first annular connecting portion 1114, and the bottom plate 1112 is provided with a second annular connecting portion 1115. The shape and size of the second annular connecting portion 1115 are adapted to the first annular connecting portion 1114. The first annular connecting portion 1114 of one battery housing 111 is adapted to connect with the second annular connecting portion 1115 of another battery housing 111, so that the two battery housings 111 are sealed together. In this way, the top plate 1111 of such a battery housing 111 can be sealed together with the bottom plate 1112 of another battery housing 111, so that multiple battery packs 110 can be sealed together in sequence along the vertical direction. This not only ensures increased capacity of the battery cluster 100 and facilitates transportation and installation of the battery cluster 100, but also prevents water or dust from entering the connection parts of adjacent battery packs 110, thus improving the stability of the battery cluster 100 during operation.

[0104] The battery housing 111 is used to house the cell module 112. The cell module 112 is used to store electrical energy, enabling the battery cluster 100 to achieve the purpose of energy storage. In addition, the battery housing 111 can protect the cell module 112, thereby extending the service life of the battery pack 110, and thus extending the service life of the battery cluster 100.

[0105] Because the top plate 1111 has an opening 1113, it is convenient to place the cell module 112 into the battery box 111 through the opening 1113, thereby improving the installation efficiency of the battery pack 110. Since the first annular connecting part 1114 is located at the edge of the opening 1113, the opening 1113 is located within the ring of the first annular connecting part 1114. Thus, when the first annular connecting part 1114 and the second annular connecting part 1115 are fitted together, the edge of the opening 1113 can be completely sealed, thereby further ensuring the sealing of the connection between the two battery boxes 111, and also further ensuring the sealing of the connection between the two battery packs 110.

[0106] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 The battery cluster 100 includes a high-voltage wiring harness 120, which is connected to the cell modules 112 of each battery pack 110. The high-voltage wiring harness 120 is used to charge the cell modules 112 or to output the electrical energy in the cell modules 112 to external electrical devices, thus meeting the charging or discharging requirements of the battery cluster 100.

[0107] Alternatively, the battery cluster 100 may include a low-voltage wiring harness 130, which is connected to the data acquisition unit 114 of each battery pack 110. The low-voltage wiring harness 130 is used to transmit the data acquired by the data acquisition unit 114 to the control component, thereby facilitating the control component to control the cell module 112, thus enabling automated control of the battery cluster 100.

[0108] In addition, the battery cluster 100 also includes a coolant pipe 140 and multiple panels 150. The coolant pipe 140 is connected to the liquid cooling plate 113 and is used to supply coolant to the liquid cooling plate 113. The panels 150 are detachably connected to the side panels of the battery housing 111 by bolts, which facilitates the inspection and maintenance of the inside of the battery housing 111.

[0109] The number of battery packs 110 included in the battery cluster 100 can be adjusted according to the power demand of the battery cluster 100. Specifically, the number of battery packs 110 can be increased when the capacity of the battery cluster 100 needs to be increased, and the number of battery packs 110 can be decreased when the capacity of the battery cluster 100 needs to be decreased.

[0110] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0111] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0112] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something,” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “above something” or “on top of something,” but also “on something” or “on top of something” without an intermediate feature or layer therebetween, i.e., directly on something.

[0113] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations rotated 90° or be in other orientations, and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery housing, characterized in that, For accommodating a battery cell module, a top plate and a bottom plate are disposed opposite to each other; the top plate is provided with an opening and a first annular connecting portion; the first annular connecting portion is located at the edge of the opening, so that the opening is located inside the annular connection portion. The base plate is provided with a second annular connecting part; the shape and size of the second annular connecting part are adapted to the first annular connecting part. The first annular connecting portion of one of the battery housings is adapted to connect with the second annular connecting portion of the other battery housing, so that the two battery housings are sealed together.

2. The battery housing according to claim 1, characterized in that, The first annular connecting portion includes an annular connecting protrusion, and the second annular connecting portion includes an annular connecting groove. The shape and size of the annular connecting protrusion and the annular connecting groove are adapted to each other.

3. The battery housing according to claim 2, characterized in that, The first annular connecting part is a flexible sealing part.

4. The battery housing according to any one of claims 1-3, characterized in that, The top plate and the opening have the same shape and area, so that the battery box is a groove.

5. The battery housing according to any one of claims 1-3, characterized in that, The battery box is rectangular in shape; the top plate and the bottom plate are the two largest boxes in the battery box.

6. The battery housing according to any one of claims 1-3, characterized in that, The battery housing includes multiple side panels, edge integrated reinforcements, and central integrated reinforcements; The edges of the multiple side plates are fixedly connected to the edge of the base plate and together with the base plate form a receiving cavity, which is used to accommodate the battery cell module; The edge integrated reinforcement includes a base plate reinforcement and a side plate reinforcement that are connected to each other; the edge integrated reinforcement is disposed along the edge of the base plate so that each base plate reinforcement is fixedly connected to the base plate and each side plate reinforcement is fixedly connected to the side plate; The central integrated reinforcing member is fixedly connected to the center of the base plate; both the edge integrated reinforcing member and the central integrated reinforcing member are integral parts.

7. The battery housing according to claim 6, characterized in that, The battery housing includes a bottom reinforcing beam; The bottom reinforcing beam is fixedly connected to the inner wall of the base plate and is located on one side of the central integrated reinforcing member; both ends of the bottom reinforcing beam are fixedly connected to the side plate respectively.

8. The battery housing according to claim 7, characterized in that, The bottom reinforcing beam is a straight beam, and the base plate is a rectangular plate; the axis of the bottom reinforcing beam is parallel to the short side of the base plate; Three bottom reinforcing beams are respectively provided on both sides of the central integrated reinforcing member; along the direction from the edge integrated reinforcing member to the central integrated reinforcing member, the three bottom reinforcing beams are, in sequence, the first reinforcing beam, the second reinforcing beam, and the third reinforcing beam; The distance between the edge integrated reinforcement and the first reinforcing beam is d1, the distance between the first reinforcing beam and the second reinforcing beam is d2, the distance between the second reinforcing beam and the third reinforcing beam is d3, and the distance between the third reinforcing beam and the central integrated reinforcement is d4. in d1： d2： d3:d4=1.5:1:1:1.

5.

9. A battery pack, characterized in that, include: The battery housing according to any one of claims 1-8; A battery cell module, wherein the battery cell module is located inside the battery box.

10. The battery pack according to claim 9, characterized in that, The number of battery cell modules is four, and the four battery cell modules are arranged in two rows and two columns.

11. The battery pack according to claim 9, characterized in that, The battery pack includes a liquid cooling plate, the first surface of which is bonded to the cell module, and the second surface of which is bonded to the bottom plate of the battery box. And / or, the battery pack includes a data acquisition device; the data acquisition device is disposed on the side plate of the battery housing and is electrically connected to the cell module; And / or, the battery pack includes a screw; the cell module includes a module end plate, the module end plate is provided with a screw hole, the screw passes through the screw hole and is fixedly connected to the battery housing.

12. A battery cluster, characterized in that, Includes multiple battery packs as described in any one of claims 9-11; the multiple battery packs are stacked in a vertical direction; The first annular connecting portion of the battery box of the battery pack is adapted to connect with the second annular connecting portion of the other battery box, so that the two battery boxes are sealed together.

13. The battery cluster according to claim 12, characterized in that, The battery cluster includes a high-voltage wiring harness, which is connected to the cell module of each battery pack. And / or, the battery cluster includes a low-voltage wiring harness connected to a data acquisition unit in each of the battery packs.

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