Module fixing frame

Abstract

The utility model discloses a module fixing frame which is a metal piece and comprises a main frame body and a plurality of fixing parts, each fixing part is arranged on the main frame body, each fixing part is provided with a connecting hole, and the connecting holes are used for being fixedly connected with an end plate of a battery module. The fixing parts on the module fixing frame can be fixedly connected to the end plates of the modules in the battery pack respectively, so that the composite modules are integrated and fixed, the overall damage resistance of the composite modules is improved, the stability of the whole composite modules is enhanced, and safety design of a battery system is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field more specifically, relate to a module fixed frame. BACKGROUND

[0002] The composite module usually includes a plurality of battery modules, each battery module is arranged in sequence, in the related art, each battery module is bound and fixed by sleeving a steel band around the composite module, so that each battery module forms an integral structure, a cooling plate is arranged on the bottom plate of the battery pack, and the bottom of the battery module is bonded to the cooling plate by glue. This fixing mode causes the composite module to be subjected to a pressing force towards the inside, the stress of each cell in the battery module is not balanced, the integrality of the composite module is not good, in a long-term use process, adjacent battery modules can move relatively, which can cause the glue bonding at the bottom of the battery module to be not firm, and part of the battery modules can be separated, so that the bottom of the cell cannot be completely in contact with the cooling plate, leading to a heat management failure of each cell, which seriously affects the stability of the battery module and is not conducive to the safety design of the battery system.

[0003] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0004] To solve one of the above technical defects, a module fixing frame is provided in the embodiment of the application.

[0005] The application adopts the following technical solutions:

[0006] A module fixing frame is a metal piece, which comprises:

[0007] A main frame body;

[0008] A plurality of fixing parts, each fixing part is arranged on the main frame body, and each fixing part is provided with a connecting hole for connecting and fixing with an end plate of a battery module.

[0009] Optionally, the main frame body is a sheet-shaped body.

[0010] Each fixing part comprises a fixing sheet part and a connecting sheet part, the fixing sheet part is perpendicular to the main frame body, and the connecting hole is arranged on the fixing sheet part.

[0011] The connecting sheet part is connected to the fixing sheet part and the main frame body, respectively.

[0012] Optionally, the main frame body comprises a flat strip plate.

[0013] Each fixing part is arranged on the flat strip plate, and each fixing part is arranged along the length direction of the flat strip plate.

[0014] Optionally, only one connecting hole is arranged on the fixing part at two ends along the length direction of the flat strip, and two connecting holes are arranged on each fixing part at the middle part.

[0015] Optionally, a plurality of wire harness fixing holes are arranged on the flat strip, and each wire harness fixing hole is arranged in sequence and spaced along the length direction of the flat strip.

[0016] Optionally, a beam fixing hole is arranged on the side of the main frame body away from the fixing part, and the beam fixing hole is used for connecting and fixing with a module fixing beam.

[0017] Optionally, the main frame body comprises an extension plate.

[0018] The extension plate is connected to one side of the flat strip along the width direction.

[0019] A bending edge is arranged on the side of the extension plate away from the flat strip.

[0020] The beam fixing hole is arranged on the bending edge.

[0021] Optionally, a mounting hole is arranged on the extension plate.

[0022] The mounting hole is used for connecting a BMS slave plate.

[0023] Optionally, a hollow part is arranged on the extension plate.

[0024] In the state that the BMS slave plate is connected to the extension plate, the BMS slave plate can cover the hollow part.

[0025] Optionally, the module fixing frame is an integral forming piece.

[0026] By adopting the above technical scheme, the present application has the following beneficial effects:

[0027] Each fixing part on the module fixing frame of the present application can be fixed and connected to the end plate of each module in the battery pack respectively, so as to integrate and fix each composite module, improve the overall damage resistance of the composite module, enhance the stability of the entire composite module, and be beneficial to the safety design of the battery system.

[0028] The specific implementation manner of the present application will be further described in detail in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are part of the present application, serve to further understand the present application, and the schematic embodiments of the present application and the descriptions thereof serve to explain the present application but do not constitute improper limitations on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings. In the drawings:

[0030] Figure 1 The cooperation structure of the mold fixing frame and the composite mold provided by the embodiment of the present disclosure is shown;

[0031] Figure 2 Another view of the cooperation structure of the mold fixing frame and the composite mold provided by the embodiment of the present disclosure is shown;

[0032] Figure 3 The structure schematic diagram of the mold fixing frame provided by the embodiment of the present disclosure is shown.

[0033] It should be noted that these drawings and the written description are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely in conjunction with the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application but not to limit the scope of the present application.

[0035] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or components referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] Referring to Figures 1 to 3As shown, the embodiment of the present application provides a module fixing frame 2, which is a metal piece and comprises a main frame body and a plurality of fixing portions 22. Each fixing portion 22 is arranged on the main frame body, and each fixing portion 22 is provided with a connecting hole 2211 for connecting and fixing with an end plate 11 of a battery module 1. Each fixing portion 22 on the module fixing frame 2 of the present application can be fixedly connected to the end plate 11 of each module in the battery pack, so as to integrate and fix each composite module (a plurality of battery modules), improve the overall damage resistance of the composite module, enhance the stability of the entire composite module, and be beneficial to the safe design of the battery system.

[0038] In some possible embodiments, the main frame body is a sheet-shaped body, each fixing portion 22 comprises a fixing sheet portion 221 and a connecting sheet portion 222, the fixing sheet portion 221 is perpendicular to the main frame body, the connecting sheet portion 222 can be located in the same plane as the main frame body, the connecting hole 2211 is arranged on the fixing sheet portion 221, and the connecting sheet portion 222 is connected to the fixing sheet portion 221 and the main frame body, respectively. The main frame body can be located on one side of the outer surface of the end plate 11 of each battery module 1, and can even be attached to each end plate 11 of the battery module 1.

[0039] In some possible embodiments, the main frame body can comprise a flat strip plate 211, each fixing portion 22 is arranged on the flat strip plate 211, and each fixing portion 22 is sequentially and spacedly arranged along the length direction of the flat strip plate 211. The flat strip plate 211 can extend along the arrangement direction of each battery module 1, and the length of the flat strip plate 211 is substantially equal to the sum of the lengths of the end plates 11 at the same end of each battery module 1.

[0040] Each end plate 11 of the battery module 1 is provided with a longitudinal through hole on each side, the end plate 11 has two large faces and a thickness end face connecting the two large faces, which are sequentially arranged along the thickness direction, and the longitudinal through hole is perpendicular to the thickness end face. The fixing sheet portion 221 covers the thickness end face of the end plate 11 of the battery module 1, and the connecting sheet portion 222 is attached to the large face of the end plate 11 of the battery module 1. One end of the connecting piece sequentially passes through the connecting hole 2211 on the fixing sheet portion 221 and the longitudinal through hole of the end plate 11 and is connected to the module fixing beam 4 on the shell of the battery pack, and the other end of the connecting piece is limited on the fixing sheet portion 221. The connecting piece can be a bolt, which connects the battery module 1 and the fixing portion 22 at the same time, fixes the battery module 1 on the shell (the module fixing beam 4) of the battery pack, simplifies the assembly structure, makes the installation of the battery module 1 more convenient, improves the assembly efficiency, and provides great convenience for the later maintenance work.

[0041] In some possible embodiments, referring to Figure 1As shown, along the length direction of the flat strip 211, only one connecting hole 2211 is arranged on the fixed part 22 at both ends, and two connecting holes 2211 are arranged on each fixed part 22 at the middle part. The fixed part 22 at both ends is connected and matched with the longitudinal through hole on the outer side of the end plate 11 at both ends, and the two connecting holes 2211 on each fixed part 22 at the middle part are arranged to be connected to the two adjacent end plates 11 by the connecting piece respectively.

[0042] In some possible embodiments, referring to Figure 3 As shown, a plurality of wire harness fixing holes 2111 are arranged on the flat strip 211, and each wire harness fixing hole 2111 is arranged in sequence and at intervals along the length direction of the flat strip 211. In the case that the wire harness is distributed more in the battery pack and there is no installation point at present, the wire harness fixing hole 2111 is reserved on the flat strip 211 of the module fixing frame 2 according to the characteristics of the module fixing frame 2, the wire harness in the battery pack is fixed, the wire harness in the battery pack is regular, and the problem that the wire harness is disordered and disconnected in operation is reduced, which affects the normal operation of the battery pack.

[0043] The battery pack can be equipped with a plurality of wire fixing devices, the wire fixing device forms a sleeve ring, and the sleeve ring can be sleeved on a plurality of cables to fix the cables. The wire fixing device can be provided with a plug-in part, which can be plugged and fixed in the wire harness fixing hole 2111 on the flat strip 211.

[0044] In some possible embodiments, referring to Figure 1 As shown, the main frame body is provided with a beam fixing hole 2131 on the side away from the fixed part 22, and the beam fixing hole 2131 is used for connecting and fixing the module installation beam 3112. The bottom plate 311 (usually a water cooling plate) of the box shell of the battery pack is usually provided with a module fixing beam 4, which is used for connecting the end plate 11 of the battery module 1. In the embodiment of the application, the module fixing frame 2 is also fixed to the module fixing beam 4, so as to connect and fix the box shell of the battery pack and each battery module 1, and form an integrated structure.

[0045] In some possible embodiments, referring to Figure 1 and Figure 3 As shown, the main frame body includes an extension plate 212 connected to one side of the flat strip 211 in the width direction, and the extension plate 212 is provided with a bent edge 213 away from the flat strip 211, and the beam fixing hole 2131 is arranged on the bent edge 213.

[0046] The bent edge 213 can be directly attached to the module installation beam 3112, and one end of the fastener 9 passes through the beam fixing hole 2131 of the bent edge 213 and is connected to the module fixing beam 4, and the other end of the fastener 9 is limited in the bent edge 213.

[0047] In some possible embodiments, the extension plate 212 is provided with mounting holes 2121 for connecting the BMS slave 5. The extension plate 212 has a large area and can be used to fix the BMS slave 5.

[0048] The module fixing frame 2 can be combined and fixed with the BMS slave to reduce the waste of space and avoid the contact between the BMS slave and the battery module 1, thereby improving the safety.

[0049] Optionally, in some possible embodiments, the extension plate 212 is provided with a hollow part 2122, and the BMS slave 5 can cover the hollow part 2122 when the BMS slave 5 is connected to the extension plate 212. The hollow part 2122 has the effect of reducing weight and is beneficial to lightweight design.

[0050] In some possible embodiments, the module fixing frame 2 is an integrally formed piece, has high overall structural strength, and is durable.

[0051] The side edge of the main frame body is bent to one side of the end plate 11, so that the edge of the side of the main frame body away from the end plate 11 is a smooth transition arc surface, without abrupt edges and corners, thereby avoiding cutting the wire harness and copper bar.

[0052] The installation of the module fixing frame 2 provided in the embodiments of the present application can make the stress of each battery module 1 balanced, the adjacent battery modules 1 not easily move relative to each other, and a large steel belt not needed to be sleeved outside the composite module, but a small steel belt can be sleeved on each battery module. The problem of unbalanced stress of each cell of the battery module 1 is avoided, the structural stability of the composite module is greatly improved, and the quality of the battery pack is improved.

[0053] The battery pack includes a busbar 6 and a terminal seat 7. The busbar 6 covers each battery module 1. The busbar 6 is provided with an aluminum bar group 61. The aluminum bar group 61 is connected with the cells of each battery module 1. The extension plate 212 is located at one side of the straight strip plate 211 along the length direction. The terminal seat 7 is located at the other side of the straight strip plate 211 along the length direction, and the terminal seat 7 is electrically connected with the aluminum bar group 61. The terminal seat 7 is connected with an electrical copper bar for transmitting the current of the battery module 1. In the present application, the extension plate 212 is arranged at one end of the straight strip plate 211 along the length direction, so as to avoid the terminal seat 7 and not interfere with the arrangement of the electrical copper bar.

[0054] Referring to Figure 3 As shown in the figure, the composite module can be provided with two module fixing frames 2 of the present application. The two module fixing frames 2 are arranged at two ends of the composite module and are used to fix each end plate at the same end of the composite module. One of the module fixing frames 2 can not be provided with an extension plate 212.

[0055] The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any skilled person in the art can make minor changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and equivalent embodiments with equivalent changes are equivalent. Any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application shall still fall within the scope of the present application.

Claims

1. A module fixing frame, which is a metal part, characterized in that: include: Main frame; A plurality of fixing parts are each arranged on the main frame, and each fixing part is provided with a connection hole, and the connection hole is used to connect and fix with the end plate of the battery module.

2. The module fixing frame according to claim 1, characterized in that: The main frame is a sheet-like body; The fixing parts each include a fixing piece and a connecting piece, the fixing piece is perpendicular to the main frame, and the connecting hole is provided on the fixing piece; The connecting piece portion is respectively connected to the fixing piece portion and the main frame.

3. The module fixing frame according to claim 1, characterized in that: The main frame includes straight strips; Each of the fixing portions is arranged on the straight strip, and each of the fixing portions is arranged in sequence and spaced apart along the length direction of the straight strip.

4. The module fixing frame according to claim 3, characterized in that: Along the length direction of the straight strip, only one connecting hole is provided on the fixing parts at both ends, and two connecting holes are provided on each fixing part in the middle.

5. The module fixing frame according to claim 3, characterized in that: A plurality of harness fixing holes are arranged on the flat strip, and the harness fixing holes are sequentially spaced apart along the length direction of the flat strip.

6. The module fixing frame according to claim 3, characterized in that: A beam fixing hole is provided on a side of the main frame away from the fixing portion, and the beam fixing hole is used to be connected and fixed to the module fixing beam.

7. The module fixing frame according to claim 6, characterized in that: The main frame includes an extension plate; The extension plate is connected to one side of the straight strip along the width direction; A bent edge is provided on a side of the extension plate facing away from the straight strip; The beam fixing hole is provided on the bent edge.

8. The module fixing frame according to claim 7, characterized in that: The extension plate is provided with a mounting hole; The mounting holes are used to connect the BMS slave board.

9. The module fixing frame according to claim 8, characterized in that: A hollow portion is provided on the extension plate; In a state where the BMS slave board is connected to the extension board, the BMS slave board can cover the hollow portion.

10. The module fixing bracket according to any one of claims 1 to 9, characterized in that: The module fixing frame is an integrally formed part.

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