Modularized spliced battery box body and battery system

Abstract

The utility model relates to the technical field of battery box bodies, in particular to a modularized spliced battery box body and a battery system.The modularized spliced battery box body comprises a plurality of box body units which are sequentially connected, and a plurality of parallel connecting holes are formed in the box body units; the box body units are fixedly connected through long screws penetrating through the connecting holes, and a sealing piece is arranged between every two adjacent box body units. The number of the box body units can be determined according to project requirements, the box body units are convenient to disassemble, and later maintenance is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery box technology field, concretely relates to a modularization splicing battery box and battery system. BACKGROUND

[0002] The existing power battery system box usually adopts aluminum box, the box generally adopts aluminum extrusion molding, and aluminum extrusion parts are spliced through the way of friction stir welding, since the electric quantity increases or decreases in different projects, therefore, different projects cannot share a set of box, and also cannot share a mold, and every development of a power battery pack project needs to go through multiple designs and mold opening, which is long in time, high in cost and low in efficiency.

[0003] The utility model discloses a kind of electric vehicle splicing type battery pack box with the announcement number CN206992168U of Chinese utility model patent, including box left end, box right end and box middle end, by setting different number of box middle end, length of box can be changed, to meet the requirement of different projects, but the box left end, box right end and box middle end are all connected by welding, if box part is damaged, it is inconvenient to replace and maintain. UTILITY MODEL CONTENT

[0004] The utility model aims at the defects of prior art, provides a kind of modularization splicing battery box and battery system, the number of box unit can be determined according to project needs, and multiple box units are convenient to disassemble, and convenient to overhaul later.

[0005] In order to solve the above technical problems, in the first aspect, the utility model provides a kind of modularization splicing battery box, including multiple sequentially connected box units, multiple parallel connection holes are opened in the box unit, multiple box units are fixedly connected by long screw rod passing through the connection hole, and sealing element is arranged between adjacent two box units.

[0006] In some embodiments, the box unit includes a bottom plate, multiple cooling flow channels are opened in the bottom plate, and the cooling flow channels are arranged parallel to the connection holes.

[0007] Further, inlet pipe and outlet pipe connected with multiple cooling flow channels are respectively arranged on the first and last box units.

[0008] Further, the end of the cooling flow channel of each box unit is provided with a connector, so that the cooling flow channels of adjacent two box units are communicated through the connector.

[0009] In some embodiments, multiple box units include two end box units, the structure of the two end box units is the same, and the two end box units are symmetrically arranged.

[0010] Furthermore, the plurality of said housing units include a central housing unit, which is arranged between the two said end housing units.

[0011] In some embodiments, the housing unit includes a bottom plate and a side plate, the side plate being vertically disposed on the bottom plate, and the connecting hole being formed on the side plate and the bottom plate.

[0012] In some embodiments, sealing grooves are formed on the opposite end faces of two adjacent housing units, and the sealing element is disposed in the sealing groove.

[0013] Furthermore, the sealant includes a sealing strip or a sealant.

[0014] Secondly, the present invention provides a battery system, characterized in that it includes a cover and a battery module, wherein the cover is sealed and fixed to the top of the modularly assembled battery housing, and the battery module is fixed inside the modularly assembled battery housing.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model divides the battery box into multiple box units. By opening connecting holes in the box units, which are through holes, multiple box units can be connected together by multiple long screws. The multiple long screws ensure the integrity of the multiple box units after they are connected as a whole, so that the strength and rigidity of the entire battery box meet the requirements. The gaps between two adjacent box units are sealed with sealant, so that the bottom of the entire battery box is sealed. This utility model can determine the number of box units according to project needs, and multiple box units are easy to disassemble and facilitate later maintenance.

[0017] 2. This utility model eliminates the need for liquid cooling plates inside the battery box by opening cooling channels in the bottom plate of the box unit.

[0018] 3. This utility model ensures the reliability and sealing of the connection between two adjacent cooling channels by setting a connector at the end of the cooling channel of each housing unit, thus preventing leakage.

[0019] 4. The box unit of this utility model includes a middle box unit and two end box units. The two end box units have the same structure and can share a set of molds. The middle box unit uses a different set of molds. The number of middle box units can be increased or decreased according to project needs, which reduces the mold opening cost.

[0020] 5. The bottom plate and side plates of the battery box unit of this utility model are connected by long screws, which helps to improve the overall integrity of the battery box.

[0021] 6. The sealing element of this utility model is set in the sealing groove on the end face of the box unit. The sealing element can be a sealing strip or a sealant. The sealing strip can be squeezed by the end faces of the two box units to ensure the sealing between the two box units. The sealant can fill the sealing groove to seal the gap between the two box units and improve the connection strength between the two box units. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the modular splicing battery box of this utility model;

[0023] Figure 2 This is a schematic diagram of the end face structure of the middle box unit of this utility model.

[0024] Reference numerals: 1-Box unit; 11-End box unit; 12-Middle box unit; 2-Connecting hole; 3-Cooling channel; 4-Sealing groove; 5-Long screw. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0026] like Figure 1 As shown, this utility model provides a modular splicing battery box, including multiple box units 1 connected in sequence. Multiple parallel connection holes 2 are opened in the box unit 1. The connection holes 2 are through holes. The connection holes 2 of each box unit 1 correspond one-to-one. Multiple box units 1 are fixedly connected by long screws 5 passing through the connection holes 2. The two ends of the long screws 5 are fixed by nuts. A sealing element is provided between two adjacent box units 1.

[0027] It is understood that this utility model divides the battery box into multiple box units 1. By opening connecting holes 2 in the box unit 1, the connecting holes 2 are through holes, so that multiple box units 1 can be connected together by multiple long screws 5. The multiple long screws 5 ensure the integrity of the multiple box units 1 after they are connected as a whole, so that the strength and rigidity of the entire battery box meet the requirements. The gap between two adjacent box units 1 is sealed with a sealing element, so that the bottom of the entire battery box is sealed. This utility model can determine the number of box units 1 according to the needs of the project, and multiple box units 1 can be separated by disassembling the long screws 5, which facilitates later maintenance.

[0028] In some embodiments, such as Figure 2 As shown, the housing unit 1 includes a base plate, and multiple cooling channels 3 are opened in the base plate. The cooling channels 3 are arranged parallel to the connecting holes 2.

[0029] By opening a cooling channel 3 in the bottom plate of the housing unit 1, the housing and the liquid cooling plate are integrated into one, eliminating the need to arrange the liquid cooling plate separately. The cooling channel 3 and the connecting hole 2 do not interfere with each other, and each cooling channel 3 is an independent channel.

[0030] Furthermore, the first and last housing units 1 are respectively equipped with inlet pipes and outlet pipes connected to multiple cooling channels 3. That is, the coolant enters each cooling channel 3 from the inlet pipe, then collects in the outlet pipe, and is discharged from the outlet pipe. Figure 1 The inlet and outlet pipes are not shown in the diagram.

[0031] Furthermore, a connector is provided at the end of the cooling channel 3 of each housing unit 1, so that the cooling channels 3 of two adjacent housing units 1 are connected through the connector. The sealing between the cooling channels 3 of two adjacent housing units 1 cannot be guaranteed by the end face pressing alone, which is prone to leakage. Therefore, by providing a connector, the sealing and reliability of the connection between the cooling channels 3 of two adjacent housing units 1 are guaranteed.

[0032] In some embodiments, such as Figure 1 As shown, the multiple box units 1 include two end box units 11. The two end box units 11 have the same structure and are arranged symmetrically.

[0033] Furthermore, the plurality of housing units 1 include a central housing unit 12, which is arranged between the two end housing units 11.

[0034] It is understandable that the two end box units 11 have the same structure and can share a set of molds, while the middle box unit 12 uses a different set of molds. The number of middle box units 12 can be increased or decreased according to project needs, which reduces the mold opening cost.

[0035] In some embodiments, the housing unit 1 includes a bottom plate and side plates, with the side plates vertically disposed on the bottom plate, and connecting holes 2 formed on the side plates and the bottom plate. The end housing unit 11 includes three side plates, and the middle housing unit 12 includes two side plates. The bottom plate and side plates of the housing unit 1 are connected by long screws 5, which helps to improve the overall integrity of the battery housing.

[0036] In some embodiments, such as Figure 2 As shown, sealing grooves 4 are opened on the opposite end faces of two adjacent box units 1, and sealing elements are set in the sealing grooves 4.

[0037] Furthermore, the seal includes a sealing strip or a sealant.

[0038] Understandably, the sealing element is set in the sealing groove 4 on the end face of the housing unit 1. The sealing element can be a sealing strip or a sealant. The sealing strip can be squeezed by the end faces of the two housing units 1 to ensure the sealing between the two housing units 1. The sealant can fill the sealing groove 4 to seal the gap between the two housing units 1 while improving the connection strength between the two housing units 1. Figure 2 Two sealing grooves 4 are provided in the middle, and sealing elements are provided in both sealing grooves 4, which helps to ensure the sealing between the box units 1.

[0039] In addition, a mortise and tenon structure can be provided on the end face of the housing unit 1 to improve the connection strength between housing units 1.

[0040] The present invention also provides a battery system, including a cover and a battery module, wherein the cover is sealed and fixed to the top of a modularly assembled battery box, and the battery module is fixed inside the modularly assembled battery box.

[0041] The above-described 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A modular, splicable battery box, characterized in that: It includes multiple box units (1) connected in sequence, with multiple parallel connecting holes (2) opened in the box unit (1). The multiple box units (1) are fixedly connected by long screws (5) passing through the connecting holes (2), and a seal is provided between two adjacent box units (1).

2. The modular splicing battery box according to claim 1, characterized in that: The housing unit (1) includes a base plate, and multiple cooling channels (3) are opened in the base plate. The cooling channels (3) are arranged parallel to the connecting holes (2).

3. The modular splicing battery box according to claim 2, characterized in that: The first and last two box units (1) are respectively provided with inlet pipes and outlet pipes connected to the multiple cooling channels (3).

4. The modular splicing battery box according to claim 2, characterized in that: Each of the housing units (1) has a connector at the end of the cooling channel (3) so that the cooling channels (3) of two adjacent housing units (1) are connected through the connector.

5. The modular splicing battery box according to any one of claims 1 to 4, characterized in that: The plurality of said housing units (1) include two end housing units (11), the two end housing units (11) have the same structure and are arranged symmetrically.

6. The modular splicing battery box according to claim 5, characterized in that: The plurality of said housing units (1) include a central housing unit (12) arranged between two said end housing units (11).

7. The modular splicing battery box according to any one of claims 1 to 4, characterized in that: The housing unit (1) includes a bottom plate and a side plate. The side plate is vertically arranged on the bottom plate, and the connecting hole (2) is opened on the side plate and the bottom plate.

8. The modular splicing battery box according to any one of claims 1 to 4, characterized in that: Sealing grooves (4) are provided on the opposite end faces of two adjacent box units (1), and the sealing element is provided in the sealing grooves (4).

9. The modular splicing battery box according to claim 8, characterized in that: The sealing element includes a sealing strip or a sealant.

10. A battery system comprising a modularly assembled battery housing as described in any one of claims 1 to 9, characterized in that: It includes a cover and a battery module. The cover is sealed and fixed to the top of the modular battery box, and the battery module is fixed inside the modular battery box.

Images