Battery box and battery box group

Abstract

The utility model discloses a battery box and a battery box group, the battery box comprises a battery box body, a box cover and battery modules, the battery box body and the box cover cooperate with each other to form a closed space for accommodating a plurality of groups of battery modules, and the battery box body and the box cover are both provided with stamping grooves. According to the battery box, the stamping grooves in the bottom of the box body and the box cover can realize nesting and stacking of the battery box body of the upper-layer battery box and the box cover of the lower-layer battery box, so that guide accessories for modular stacking of the battery box are saved, and the production cost is saved.

Description

Technical Field

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

[0002] In the context of promoting the realization of the "dual carbon" goal, energy storage technology has ushered in explosive growth as a core key technology for building a safe, economical and flexible smart grid and realizing renewable energy power generation. As a lithium battery energy storage technology in electrochemical energy storage, lithium iron phosphate energy storage technology has the advantages of high safety, long life and low cost, and is currently widely used in the energy storage field.

[0003] At present, household energy storage batteries are usually installed in a modular stack, with guide components between the boxes. After the boxes are stacked, external wiring is required to complete the series and parallel connection installation between household batteries. The complexity of the box components and installation accessories increases the production and installation costs; secondly, the planning of the internal space of the battery box is not reasonable, which makes the internal structure of the battery box not compact enough.

[0004] It should be noted that the statements herein merely provide background information related to the present application and do not necessarily constitute prior art. Utility Model Content

[0005] In view of the above problems, the present application proposes a battery box that overcomes the above problems or at least partially solves the above problems.

[0006] The present application embodiment adopts the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a battery box, comprising: a battery box body, a box cover and a battery module, wherein the battery box body and the box cover cooperate with each other to form a closed space for accommodating multiple groups of the battery modules, and the battery box body and the box cover are both provided with stamping grooves.

[0008] Preferably, the punching groove includes a convex bump on the box cover and a concave groove on the bottom surface of the battery box. The battery box also includes a stacking connector, which includes a box cover stacking connector on the box cover and a box stacking connector on the bottom surface of the battery box.

[0009] Preferably, a slave control mounting carrier plate for mounting a slave control board is provided inside the battery box, the slave control mounting carrier plate is vertically arranged between the battery module and the box stacking connector, and a wire binding through hole is provided on the slave control mounting carrier plate.

[0010] Preferably, the battery module includes a module end plate, which is arranged at both ends of the battery module, and the module end plate and the battery are fastened by a cable tie. The battery box also includes a fire-fighting device mounting carrier plate for mounting a fire-fighting device, and the fire-fighting device mounting carrier plate is connected and fixed to the module end plate. The fire-fighting device mounting carrier plate is provided with a thermal wire avoidance groove, and the thermal wire on the fire-fighting device passes through the thermal wire avoidance groove and is arranged around the battery module.

[0011] Preferably, the battery box further comprises a sealing gasket, which is arranged on the opening of the battery box. The battery box is also provided with an insulating support for connecting a plurality of battery boxes in series, and a handle and at least one pressure relief valve are arranged on the side of the battery box.

[0012] In a second aspect, an embodiment of the present application provides a battery box group, comprising a plurality of battery boxes as described in any one of the first aspect, wherein the plurality of battery boxes are connected and combined via a stacking connector for use.

[0013] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0014] The present application realizes the nested stacking of multiple battery boxes, upper battery box bodies and lower battery box covers through the stamping grooves on the bottom of the battery box body, thereby saving the guide accessories of household modular stacking battery boxes; secondly, the slave control mounting carrier plate in the battery box is arranged between the main circuit and the slave control board to enhance the isolation; thirdly, the fire-fighting device is installed on the rear side of the module through the fire-fighting device mounting carrier plate, and the fire-fighting thermistor is wrapped around the battery module at the same time, thereby improving the space utilization rate in the battery box.

[0015] The above description of the technical solution of the present application is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0017] Figure 1 This is an axonometric view of the battery box in the embodiment of the present application;

[0018] Figure 2 This is a three-dimensional view of the bottom of the battery box in the embodiment of the present application;

[0019] Figure 3 This is a top view of the internal layout of the battery box in the embodiment of the present application;

[0020] Figure 4 This is a three-dimensional schematic diagram of the internal module of the battery box in the embodiment of the present application;

[0021] Figure 5 This is a three-dimensional schematic diagram of the installation of the control panel in the embodiment of the present application.

[0022] In the present application, 1-battery box, 2-box cover, 3-box cover stacking connector, 4-box stacking connector, 5-handle, 6-pressure relief valve, 7-bottom groove of box, 8-convex bump on box cover, 9-slave control mounting plate, 10-battery module, 11-module end plate, 12-fire fighting device mounting plate, 13-fire fighting device, 14-thermal wire avoidance groove, 15-slave control board, 16-sealing gasket, 17-insulating pillar, 18-wire tie hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0024] The idea of ​​the present application is to design a battery box with strong universality in view of the complex and inconvenient structure of battery box stacking components and installation accessories in the prior art. By arranging stamping grooves on the bottom of the battery box and the box cover, nested stacking of multiple battery boxes, upper battery boxes and lower battery box covers can be achieved, thus saving guide accessories for modular stacking battery packs and saving production costs.

[0025] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0026] The present application embodiment provides a battery box, combined with Figure 1-5 , including a battery box 1, a box cover 2 and a battery module 10, wherein the battery box 1 and the box cover 2 cooperate with each other to form a closed space for accommodating multiple groups of the battery modules 10, and the battery box 1 and the box cover 2 are both provided with stamping grooves.

[0027] The battery box in this application can hold multiple groups of battery modules 10. In this application, only a battery box for holding two groups of battery modules 10 is taken as an example, wherein the battery module 10 includes multiple batteries arranged in parallel. In this application, each group of battery modules is taken as an example of 8 batteries. A partition is provided in the middle of the battery in the battery module, one of its functions is to form insulation between the batteries, and the second is to facilitate ventilation and heat dissipation between the batteries to avoid heat accumulation. The stamping groove described in this application includes a convex bulge 8 on the box cover 2 and a lower groove 7 of the box body provided on the bottom surface of the battery box body. The convex bulge 8 on the box cover has a slope, which is convenient for embedding the lower groove 7 of the box body. The convex bulge 8 on the box cover and the lower groove 7 of the box body are both stamped. The convex bulge 8 on the box cover can be embedded in the lower groove 7 of the box body. It can be understood that due to the presence of the stamping groove, when the two battery boxes are placed up and down, the box cover of the lower battery box can be embedded in the bottom of the upper battery box, avoiding the lateral movement of the battery stacking, saving modular stacking battery box guide accessories, and saving production costs.

[0028] In some examples of the present application, the battery box further includes a stacking connector, and the stacking connector includes a box cover stacking connector 3 arranged on the box cover and a box body stacking connector 4 arranged on the bottom surface of the battery box body.

[0029] Combination Figure 1 The box cover 2 is provided with a stamped box cover upper convex bump 8 and a mounting position of the box cover stacking connector 3. The box cover stacking connector 3 is fixed to its mounting position and can be fixed by screws or by process welding. Figure 2 The box stacking connector 4 is arranged at the bottom of the battery box, and the battery box is provided with a reserved installation position for the box stacking connector 4. The stacking connector includes the communication connection terminal and the battery series-parallel terminal required for battery connection. When the battery boxes are stacked up and down, the upper battery box can be nested and stacked with the convex bump 8 on the box cover and the box cover stacking connector 3 of the lower battery box through the lower box groove 7 and the box stacking connector 4, saving redundant stacking guide accessories, saving production costs and installation costs of external connection cables; at the same time, the convex bump 8 on the box cover and the lower box groove 7 of the box body also strengthen the overall strength of the box.

[0030] In some examples of the present application, a slave control mounting carrier plate 9 for mounting a slave control board 15 is disposed inside the battery box 1. The slave control mounting carrier plate 9 is vertically disposed between the battery module 10 and the box stacking connector 4. A wire binding hole 18 is disposed on the slave control mounting carrier plate 9.

[0031] Combination Figure 3 and Figure 5The slave control board 15 (slave control circuit board) in the battery box is installed on the slave control mounting carrier board 9. The slave control mounting carrier board 9 is directly installed on the battery box 1 through box rivets. The slave control mounting carrier board 9 is a sheet metal part, which is arranged between the box stacking connector 4 and the slave control board 15, and can play a role in strengthening the isolation of batteries and cables. At the same time, the slave control board 15 is directly and exposedly installed on the slave control mounting carrier board 9, which increases the heat dissipation capacity of the slave control board 15 and saves the production and installation costs of the slave control housing. The slave control mounting carrier board 9 is provided with a wire tie hole 18 that can be used to fix the acquisition line and the communication line.

[0032] In some examples of the present application, the battery module 10 includes a module end plate 11, which is disposed at both ends of the battery module 10, and the module end plate 11 and the battery are fastened by a cable tie. The battery box also includes a fire-fighting device mounting carrier plate 12 for mounting a fire-fighting device 13, and the fire-fighting device mounting carrier plate 12 is disposed on the module end plate 11. The fire-fighting device mounting carrier plate 11 is provided with a thermal wire avoidance groove 14, and the thermal wire on the fire-fighting device passes through the thermal wire avoidance groove 14 and is arranged around the battery module 10.

[0033] Combination Figure 3 , Figure 4 In the present application, the battery module 10 includes batteries, partitions and module end plates 11. The module end plates 11 are arranged at both ends of the battery module 10. The module end plates 11, the batteries and the partitions between the batteries are combined by cable ties, wherein the cable ties are preferably steel cable ties. In the present application, the module end plates 11 include insulating materials, preferably plastic. In order to fix the batteries and partitions in the battery module, the present application sets module end plates 11 on the outside of the batteries at both ends of the battery module. Since the module end plates 11 are more wear-resistant and extrusion-resistant, cable tie grooves can be set on the module end plates 11, so that the cable ties are not easy to fall off when fixing the module end plates 11, the batteries and the battery partitions. Figure 4 It can be seen that each group of battery modules described in this application is tied with two cable ties.

[0034] In the present application, the fire-fighting device 13 is installed on the fire-fighting device mounting plate 12, and the fire-fighting device mounting plate 12 is arranged on the module end plate 11, wherein the fire-fighting device mounting plate 12 can span the module end plate 11 on the same side. The fire-fighting device mounting plate 12 can be arranged on a side close to the slave control mounting plate 9, or on a side away from the slave control mounting plate 9, according to the specific planned space. In the present application, a thermistor is provided on the fire-fighting device 13, which is tied and arranged around the battery module 10 through the thermistor avoidance groove 14 on the fire-fighting device mounting plate 12, wherein the fire-fighting device 13 is installed vertically, which effectively utilizes the redundant space in the box.

[0035] In some examples of this application, such as Figure 3 As shown, the battery box further comprises a sealing gasket 16, which is disposed on the opening of the battery box body, so that the box cover 2 and the battery box body 1 are more sealed when closed, and at the same time buffers the buckling pressure of the box cover 2 and the battery box body 1.

[0036] In some examples of the present application, the battery box 1 is further provided with an insulating support 17 for connecting multiple battery boxes in series, and a handle 5 and a pressure relief valve 6 are provided on one side of the battery box, or a handle 5 and a pressure relief valve 6 are provided on opposite sides. Figure 2 , Figure 3 The handles 5 are arranged in pairs on opposite sides to facilitate the transportation of the battery. The pressure relief valve 6 is arranged on any side of the battery box to maintain the balance of pressure inside and outside the battery. It can be understood that the pressure relief valve 6 can also be arranged in pairs on opposite sides of the battery box 1. The insulating pillars 17 arranged in the battery box can assist in the series wiring inside the battery box. When the battery boxes are connected in series, the two series terminals connected in series are connected by the insulating pillars. When the battery boxes are connected in parallel, the battery connection can be completed only by stacking the connectors. In this way, the series-parallel connection of battery modules inside multiple battery boxes can share the same battery box.

[0037] The present application also provides a battery box group, which is composed of multiple battery boxes connected by stacking connectors. When the battery boxes are stacked up and down, the upper battery box is nested and stacked with the lower battery box through the lower groove 7 of the box body and the box stacking connector 4, and the upper convex bulge 8 of the box cover and the box cover stacking connector 3 to form a battery box group. It saves unnecessary stacking guide accessories, saves production costs and installation costs of external connection cables; at the same time, the upper convex bulge 8 of the box cover and the lower groove 7 of the box body also strengthen the overall strength of the box body.

[0038] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0039] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0043] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A battery box, characterized in that: include: A battery box, a box cover and a battery module, wherein the battery box and the box cover cooperate with each other to form a closed space for accommodating multiple groups of battery modules, and the battery box and the box cover are both provided with stamping grooves.

2. The battery box according to claim 1, characterized in that: The punching groove comprises a convex bump on the box cover and a concave groove under the box body on the bottom surface of the battery box body.

3. The battery box according to claim 2, characterized in that: The battery box further comprises a stacking connector, and the stacking connector comprises a box cover stacking connector arranged on the box cover and a box body stacking connector arranged on the bottom surface of the battery box body.

4. The battery box according to claim 3, characterized in that: A slave control mounting carrier plate for mounting a slave control board is arranged inside the battery box, the slave control mounting carrier plate is vertically arranged between the battery module and the box stacking connector, and a wire binding through hole is arranged on the slave control mounting carrier plate.

5. The battery box according to claim 1, characterized in that: The battery module comprises a module end plate, which is arranged at both ends of the battery module, and the module end plate and the battery are fastened by a cable tie.

6. The battery box according to claim 5, characterized in that: The battery box also includes a fire-fighting device mounting carrier plate for mounting a fire-fighting device, and the fire-fighting device mounting carrier plate is connected and fixed to the module end plate.

7. The battery box according to claim 6, characterized in that: The fire-fighting device mounting carrier is provided with a thermal wire avoidance groove, and the thermal wires on the fire-fighting device pass through the thermal wire avoidance groove and are arranged around the battery module.

8. The battery box according to claim 1, characterized in that: The battery box also includes a sealing gasket, which is arranged on the opening of the battery box body.

9. The battery box according to claim 1, characterized in that: The battery box is also provided with insulating pillars for connecting multiple battery boxes in series, and the side of the battery box is provided with a handle and at least one pressure relief valve.

10. A battery box assembly, characterized in that: The invention comprises a plurality of battery boxes as claimed in any one of claims 1 to 9, wherein the plurality of battery boxes are connected and combined by a stacking connector.

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