CN217134580U

CN217134580U - Battery stack, CTC integrated frame with batteries detached from bottom and vehicle with CTC integrated frame

Info

Publication number: CN217134580U
Application number: CN202220628917.6U
Authority: CN
Inventors: 于东海; 杨健; 王修虎; 倪婧
Original assignee: FAW Volkswagen Automotive Co Ltd
Current assignee: FAW Volkswagen Automotive Co Ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-08-05
Anticipated expiration: 2032-03-22

Abstract

The utility model provides a from integrated frame of CTC of bottom dismantlement battery, including battery pile, upper cover, frame body and end backplate, the battery pile includes electric core module and linking bridge, and electric core module includes a plurality of fixed electric core monomers as an organic whole, and linking bridge includes fixed plate and connecting piece, and the fixed plate is fixed to be set up in the relative both sides of electric core module, and the connecting piece is fixed to be set up in the outside of fixed plate. The upper cover is arranged above the frame body and is in sealing fit with the frame body; the bottom guard plate is detachably arranged below the frame body and is in sealing fit with the frame body; the upper cover, the frame body and the bottom guard plate are enclosed to form a battery compartment for accommodating a battery stack; the frame body is provided with an installation part matched with the connecting piece, and the connecting piece is positioned below the installation part and is matched and fixed with the installation part. The utility model has the advantages that pile detachably lug connection on the frame with the battery, backplate at the bottom of frame below installation detachable again can follow the frame below and dismantle the maintenance to the battery.

Description

Battery stack, CTC integrated frame with batteries detached from bottom and vehicle with CTC integrated frame

Technical Field

The utility model relates to an automobile manufacturing technical field, specific theory relates to a battery pile, dismantle the integrated frame of CTC of battery from the bottom and vehicle thereof.

Background

The power battery of the current new energy automobile develops towards a higher integration degree, the grouping efficiency from a battery cell monomer to a battery system can be further improved by the improvement of the integration degree, and the weight reduction and cost reduction are realized. Under the traditional integrated form, the battery system is an independent module, has a self frame and a surrounding structure, and integrally installs the battery system module on a whole vehicle during the assembly of the whole vehicle.

Ctc (cell To sessions) is the most highly integrated form, and the cell units are directly mounted on the frame. The frame is a carrier of the whole vehicle mounting part, but integrates the function of the battery system frame, and is also a direct mounting carrier of all battery system subcomponents, and the battery stack and other battery system subcomponents are directly mounted on the frame, so that the frame structure of the battery system is omitted, more battery cells can be arranged in the saved space, the electric quantity of the battery system is increased, and the power performance and the driving range of the vehicle are improved.

In some CTC structural schemes, the cell stack is mounted on the frame from top to bottom, and after the whole vehicle is assembled, a passenger compartment is arranged above the cell stack, the structure in the passenger compartment is complex, and the number of interior trim mounting parts is large. Therefore, when a battery fails and needs to be repaired, the battery system subcomponents are often difficult to repair, requiring disassembly of all components above the stack, and complicating the repair procedure. The development of the technical scheme which adopts a CTC integration form and can overcome the problem of poor maintainability promotes the development of the battery system integration technology, and is favorable for improving the competitiveness of new energy automobile products of companies.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a battery pile, dismantle the integrated frame of CTC of battery and vehicle thereof from the bottom sets up linking bridge on the battery pile, with battery pile detachably lug connection on the frame, at frame below installation detachable backplate again, can follow the frame below and dismantle the maintenance to the battery pile.

The utility model provides a technical problem adopt following technical scheme:

the utility model provides a battery stack, includes electric core module and linking bridge, electric core module includes a plurality of fixed electric core monomers as an organic whole, linking bridge includes fixed plate and connecting piece, the fixed plate is fixed to be set up in the relative both sides of electric core module, the connecting piece is fixed to be set up in the outside of fixed plate for fixed battery stack.

Further, the connecting piece is in a plate shape with a plurality of mounting holes or a plurality of plug connectors.

Further, the fixed plate is the snakelike fixed plate with electric core module outside profile looks adaptation, makes fixed plate and the laminating of electric core module, firm in connection, the connecting piece is located the middle part position of electric core module height, avoids the battery to pile the installation back, produces stress concentration, causes the connecting piece to damage.

Further, the cell module is an energy type cell module, and/or is a hybrid type cell module, and/or is a power type cell module.

Further, the CTC integrated frame with the battery detached from the bottom comprises the battery stack, an upper cover, a frame body and a bottom guard plate, wherein the upper cover is arranged above the frame body and is in sealing fit with the frame body; the bottom guard plate is detachably arranged below the frame body and is in sealing fit with the frame body; the upper cover, the frame body and the bottom guard plate are enclosed to form a battery compartment for accommodating a battery stack; the battery pack is characterized in that the frame body is provided with an installation part matched with the connecting piece, the connecting piece is located below the installation part and is matched and fixed with the installation part, so that the battery pack is installed on the frame body from bottom to top and can be detached from the lower part of the frame body.

Furthermore, one end part of the frame body is provided with a high-voltage distribution box accommodating cavity for accommodating a high-voltage distribution box, and the high-voltage distribution box is electrically connected with the battery stack; the high voltage distribution box holds the below in chamber and is provided with detachable access panel, can follow the access panel and overhaul the interior electrical components of high voltage distribution box, reduces the dismantlement scope.

Further, the access window is arranged on the bottom guard plate and is in sealing fit with the bottom guard plate.

Further, the frame body comprises a plurality of cross beams, and the mounting part is arranged on the side wall of one side or two sides of each cross beam; a plurality of cell stack accommodating cavities are formed between the plurality of cross beams and the frame of the frame body; the battery pile is a plurality of, sets up a battery pile or a plurality of battery pile in a battery pile accommodation cavity.

Further, the mounting portion is plate-shaped having a plurality of screw holes or a plurality of slots.

Furthermore, the upper cover is provided with a cooling runner which comprises a water inlet runner and a water outlet runner.

Furthermore, the cell stack is provided with a cooling plate, and the inlet and the outlet of the cooling plate are provided with quick connectors which are respectively connected with the water inlet flow passage and the water outlet flow passage; or the cell stack is provided with a plurality of cooling plates, the inlet and the outlet of each cooling plate are respectively connected with a water inlet collecting pipe and a water outlet collecting pipe, and the water inlet collecting pipe and the water outlet collecting pipe are both provided with quick-plug connectors; the water inlet flow channel and the water outlet flow channel are provided with interfaces matched with the quick-connection connectors, so that the cell stack is convenient to disassemble and assemble.

Further, a vehicle includes the CTC integrated frame with a battery removed from the bottom.

Compared with the prior art, the beneficial effects of the utility model reside in that:

(1) the connecting support is arranged on the battery stack, and a surrounding structure is not required to be arranged outside the battery stack, so that the battery cell module of the battery stack is directly connected with the whole vehicle frame through the connecting support, the weight of the battery stack can be reduced, and the capacity of the battery stack is increased.

(2) Under the CTC integrated form, a structural scheme beneficial to lower maintenance is designed, so that the battery stack can be disassembled from the bottom of the vehicle for maintenance, and the problem of difficulty in disassembling the battery system under the CTC integrated form is solved. Simultaneously, the maintenance window is independently arranged for the high-voltage distribution box, so that the high-voltage distribution box can be maintained independently when an internal electrical element breaks down conveniently, the maintenance of the whole bottom protection plate is not required to be disassembled, the disassembly range is reduced, and the maintenance difficulty is reduced.

(3) The battery compartment upper cover integrates the cooling flow channel, a cooling pipeline does not need to be arranged in the battery compartment, the structural weakening caused by avoiding the cooling pipeline is avoided, the structural strength is ensured to the maximum extent, and the collision resistance is improved.

(4) The energy type battery cell monomer and the super capacitor monomer are integrated in the same battery stack, so that the instantaneous high-power requirement of the whole vehicle can be met, the energy type battery cell monomer can work in the most appropriate power output working interval, and the service life is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a cell stack according to the present invention.

Fig. 2 is a schematic structural diagram of another embodiment of the cell stack of the present invention.

Fig. 3 is an exploded view of the CTC integrated frame with the battery detached from the bottom according to the present invention.

Fig. 4 is an enlarged schematic view of a.

Fig. 5 is a schematic structural diagram of the upper cover of the present invention.

Fig. 6 is another angle structure diagram of the upper cover of the present invention.

In the figure: 1-a cell stack; 101-cell monomer; 102-a connecting bracket; 1021-a fixed plate; 1022-a connecting member; 2-covering the upper cover; 3-a frame body; 31-a frame; 32-a cross beam; 33-a mounting portion; 4-bottom guard board; 5-sealing glue; 6-bottom guard plate sealing gasket; 7-a high-voltage distribution box accommodating cavity; 8-a high voltage distribution box; 9-maintenance window; 10-an access window sealing gasket; 11-a water inlet channel; 12-a water outlet flow channel; 13-a cooling plate; 14-a water inlet header; 15-water outlet header; 16-a quick-connect coupling; 17-interface.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "middle", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, or the position or positional relationship which is usually understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and thus, should not be construed as limiting the present invention.

The utility model provides a battery stack, as shown in FIG. 1 and FIG. 2, including electric core module and linking bridge 102, electric core module includes a plurality of fixed electric core monomers 101 as an organic whole, can directly bond each electric core monomer 101 together through the casting glue. The connection bracket 102 includes a fixing plate 1021 and a connection member 1022, the fixing plate 1021 is fixedly disposed at two opposite sides of the cell module, and can be bonded to the cell module through a structural adhesive, and the connection member 1022 is fixedly disposed at an outer side of the fixing plate 1021, and is used for fixing the battery stack 1. Preferably, fixed plate 1021 is for the snakelike fixed plate 1021 with the looks adaptation of electricity core module outside profile, makes fixed plate 1021 and the laminating of electricity core module, and in the direction of height of electricity core module, fixed plate 1021 can cover most or whole electricity core module, increases with the area of contact of electricity core module, firm in connection, improves the installation strength of battery pile 1. Preferably, the connecting member 1022 is a plate having a plurality of mounting holes or a plurality of connectors, and may be a long strip plate or a plurality of long strip plates arranged in segments. In the height direction of the cell modules, the connecting member 1022 is located in the middle of the cell modules, including the middle height or the height slightly above or below the middle, so as to prevent the connecting member 1022 from being damaged due to stress concentration generated after the cell stack 1 is mounted. As shown in fig. 2, the connecting members 1022 may extend into the interior of the cell module, but occupy the space of the cell units 101. In order to increase the capacity of the cell module, it is preferable that the connecting members 1022 be located outside the cell module, as shown in fig. 1.

The cell modules may be energy type cell modules, and the cell monomers 101 are all energy type cell monomers 101. The battery cell module may also be a power battery cell module, and the battery cell monomers 101 are all power battery cell monomers 101. The battery cell module may also be a hybrid battery cell module, and the battery cell unit 101 is a combination of an energy type battery cell unit 101 and a power type battery cell unit 101.

The utility model also provides a CTC integrated frame for detaching the battery from the bottom, which is shown by combining the graph 3 and the graph 4, and comprises an upper cover 2, a frame body 3, a battery stack 1 and a bottom guard plate 4, wherein the upper cover 2 is arranged above the frame body 3 and is in sealing fit with the frame body 3; the bottom guard plate 4 is detachably arranged below the frame body 3 and is in sealing fit with the frame body 3; the upper cover 2, the frame body 3 and the bottom guard plate 4 enclose to form a battery compartment for accommodating the battery stack 1. The frame body 3 is provided with an installation part 33 matched with the connecting piece 1022, the connecting piece 1022 is positioned below the installation part 33 and is matched and fixed with the installation part 33, so that the battery stack 1 is installed on the frame body 3 from bottom to top and can be detached from the lower part of the frame body 3. The frame body 3 is a whole vehicle frame and is a carrier of a whole vehicle mounting component.

Example 1

In this embodiment, the cell stack 1 is suspended from the bottom to the top on the frame body 3 by bolts. The attachment bracket 102 has a plurality of mounting holes, preferably non-threaded through holes, as shown in FIG. 1. The mounting portion 33 has a plurality of threaded holes as shown in fig. 4. The upper cover 2 and the frame body 3 are in sealing fit through the sealant 5, the battery compartment is guaranteed to be sealed, during assembly, the upper cover 2 is installed on the frame body 3 from top to bottom, and under the bonding effect of the sealant 5, the upper cover 2 and the frame body 3 are sealed. Then, the mounting holes of the connecting members 1022 are aligned with the threaded holes of the mounting portions 33, the hole diameters of the mounting holes are slightly larger than the hole diameters of the threaded holes, so that bolts can be conveniently screwed in from below, and the cell stack 1 is hung on the frame body 3 in a bolt connection mode from bottom to top. Other all battery system subcomponents, such as copper bar, pencil, sensor etc. also fix on frame body 3 through the mode of can dismantling the connection from bottom to top, backplate 4 at the bottom can be dismantled in the below installation again, sets up the sealed pad 6 of backplate at the bottom between backplate 4 and the frame body 3 at the bottom, and sealed 6 and the frame 31 adaptation of frame body 3 of backplate at the bottom can play sealed effect. The bottom guard plate 4 is connected with the frame body 3 through bolts, the bolts penetrate through the bottom guard plate 4 and the bottom guard plate sealing gasket 6, and the bottom guard plate sealing gasket 6 is compressed to realize sealing. When in maintenance, the bottom protection plate 4 is detached, so that the cell stack 1 and the cell system subcomponents can be detached from the lower part of the frame body 3, and all the cell stack 1 and the cell system subcomponents can be maintained and replaced.

Preferably, the frame body 3 includes a plurality of cross beams 32, the mounting portions 33 are disposed on the side walls of the two sides of the cross beam 32 when the cross beam 32 is located at the middle position, the mounting portions 33 are disposed on the inner side walls of the cross beam 32 when the cross beam 32 is located at the edge position, that is, when the cross beam 32 is the transverse edge of the frame 31, and the threaded holes on the mounting portions 33 are arranged along the extending direction of the cross beam 32. Form a plurality of battery piles 1 between the frame 31 of a plurality of crossbeams 32 and frame body 3 and hold the chamber, can hold a plurality of battery piles 1, every battery pile 1 all can dismantle with frame body 3 and be connected, can dismantle each battery pile 1 alone, only maintains to trouble battery pile 1 and changes, reduces the maintenance degree of difficulty and cost of maintenance. Specifically, according to design requirements, one cell stack 1 may be disposed in the accommodating cavity of one cell stack 1, or a plurality of cell stacks 1 may be disposed. For example, only one energy type cell stack 1 or one power type cell stack 1 is accommodated in one cell stack 1 accommodating cavity, or one energy type cell stack 1 and one power type cell stack 1 are accommodated simultaneously. Different cell stacks 1 can be arranged according to the shape and the size of the accommodating cavity of the cell stacks 1, and preferably, the cell stacks 1 are the same, so that the installation process and the part type can be simplified.

Preferably, the plurality of cell stacks 1 are hybrid cell stacks 1, and include a combination of a plurality of energy type cell units 101 and a plurality of super capacitor units. The combination of the energy type battery cell monomer 101 and the super capacitor monomer can be set in various combination modes according to needs, wherein one part of the battery stack 1 is an energy type module of the energy type battery cell monomer 101, and the other part of the battery stack 1 is a super capacitor module of the super capacitor monomer; or a hybrid module in which the energy type battery cell unit 101 and the super capacitor unit are integrated simultaneously in the battery stack 1; any combination of hybrid modules and energy-type modules and/or super-capacitor modules is also possible.

The energy type electric core single body 101 is high in energy density, but low in power density, on one hand, the peak output power cannot well meet the instantaneous power requirement of the whole vehicle, on the other hand, the output power fluctuates instantaneously and greatly to generate potential adverse effects on the service life of the whole vehicle, and on the other hand, the super capacitor is opposite, and the super capacitor is characterized in that the instantaneous high power requirement can be met, but the energy density is low. The hybrid battery stack 1 organically combines the two, takes the energy type battery cell monomer 101 as a main power output source under the working condition that the power requirement of the whole vehicle is stable, and is powered by the super capacitor monomer when the whole vehicle needs instantaneous high power. The two are combined, so that the instantaneous high-power requirement of the whole vehicle can be met, the energy type battery cell unit 101 can work in the most appropriate power output working interval, and the service life is prolonged.

One tip of frame 31 of frame body 3 is provided with high voltage distribution box and holds chamber 7, is formed by the sealed cooperation of bottom open-ended box body and frame 31 for hold high voltage distribution box 8, high voltage distribution box 8 is connected with 1 electricity of battery pile, for the consumer carries out distribution power supply and management. The frequency of the need for maintenance of the electrical components in the high voltage distribution box 8 is higher than that of other sub-components, and a detachable access window 9 is provided below the high voltage distribution box accommodating chamber 7. An access window 9 of the high-voltage distribution box 8 can be provided separately on the bottom panel 4, preferably the bottom panel seal 6 can cover the battery compartment and the access window 9 of the high-voltage distribution box 8. Maintenance window 9 is a part of end backplate 4, conveniently dismantles the maintenance alone to high voltage distribution box 8, overhauls from maintenance window 9 to electric elements in the high voltage distribution box 8, can reduce the dismantlement scope, reduces and dismantles the degree of difficulty. The access panel 9 and the bottom guard plate 4 are connected through bolts, an access panel sealing gasket 10 is further arranged between the access panel 9 and the bottom guard plate 4, the bolts penetrate through the access panel sealing gasket 10 and compress the access panel sealing gasket 10 to realize sealing, and the bolts and the bottom guard plate sealing gasket 6 are used together to enhance the sealing effect.

As shown in fig. 5 and 6, the upper cover 2 is provided with a cooling flow passage including a water inlet flow passage 11 and a water outlet flow passage 12. The cooling flow channel is integrated on the upper cover 2 of the battery compartment, so that a cooling pipeline is prevented from being arranged in the battery compartment, and the cooling pipeline is arranged in the battery compartment, so that material removal is required to be carried out on the beam 32 part of the frame body 3 to avoid the cooling pipeline, the effective connection height between the beam 32 part of the frame body 3 and the frame 31 part of the frame body 3 is reduced, the connection strength is weakened, and the collision resistance of the frame body 3 is influenced. And the cooling flow channel is not in direct contact with the external environment, so that collision damage caused by the external environment can be avoided, for example, damage caused by scraping or stone impact in the running process can be avoided, and the service life can be prolonged. The cell stack 1 is provided with a cooling plate 13 for cooling or heating the cell stack 1. If necessary, a cooling plate 13 may be provided on the cell stack 1, and the inlet and outlet of the cooling plate 13 are provided with quick connectors 16 connected to the inlet channel 11 and the outlet channel 12, respectively. A plurality of cooling plates 13 may be provided for a cell stack 1, the inlet and outlet of each cooling plate 13 are connected to an inlet manifold 14 and an outlet manifold 15, respectively, and the inlet manifold 14 and the outlet manifold 15 are provided with quick connectors 16 connected to the inlet flow channels 11 and the outlet flow channels 12, respectively. The inlet flow channel 11 and the outlet flow channel 12 are provided with interfaces 17 matched with the quick connectors 16, and the cell stack 1 can be conveniently and quickly disassembled and assembled through the quick connectors 16.

Example 2

In this embodiment, the other components are the same as those in embodiment 1, and different from embodiment 1, the connection holder 102 has a plurality of plug-in units, and the attachment portion 33 also has a plurality of slots adapted to each other. During assembly, the plug-in connector of the connecting bracket 102 is inserted into the slot from the lower part of the mounting part 33 and locked, and the battery stack 1 is hung on the frame body 3 from the bottom to the top.

The utility model also provides a vehicle, include the integrated frame of CTC of dismantling the battery from the bottom can realize dismantling the battery from the vehicle bottom.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a battery stack, its characterized in that includes electric core module and linking bridge (102), electric core module includes a plurality of fixed electric core monomers (101) as an organic whole, linking bridge (102) include fixed plate (1021) and connecting piece (1022), fixed plate (1021) are fixed to be set up in the relative both sides of electric core module, connecting piece (1022) are fixed to be set up in the outside of fixed plate (1021) for fixed battery stack (1).

2. The battery stack according to claim 1, wherein the connection member (1022) has a plate shape having a plurality of mounting holes or a plurality of plug-in members.

3. The battery stack according to claim 2, characterized in that the fixing plate (1021) is a serpentine fixing plate (1021) adapted to the outer profile of the cell modules, and the connecting element (1022) is located at the middle position of the height of the cell modules.

4. The battery stack according to claim 1 or 2, characterized in that the cell modules are energy-type cell modules, and/or are hybrid-type cell modules, and/or are power-type cell modules.

5. A CTC integrated frame for bottom removal of batteries, comprising a battery stack (1) according to any of claims 1-4, further comprising an upper cover (2), a frame body (3) and a floor shield (4), said upper cover (2) being arranged above the frame body (3) in sealing engagement with the frame body (3); the bottom guard plate (4) is detachably arranged below the frame body (3) and is in sealing fit with the frame body (3); the upper cover (2), the frame body (3) and the bottom guard plate (4) enclose to form a battery compartment for accommodating the battery stack (1); be provided with on frame body (3) with installation department (33) of connecting piece (1022) looks adaptation, connecting piece (1022) are located the below of installation department (33), and are fixed with installation department (33) cooperation.

6. A CTC integrated frame for the bottom removal of batteries according to claim 5, characterized in that the frame body (3) is provided at one end with a high voltage distribution box housing chamber (7) for housing a high voltage distribution box (8), the high voltage distribution box (8) being electrically connected to the battery stack (1); and a detachable maintenance window (9) is arranged below the high-voltage distribution box accommodating cavity (7).

7. A CTC-integrated vehicle frame for bottom removal of batteries according to claim 6, characterized in that the access window (9) is provided on the bottom fender (4), the access window (9) being in sealing engagement with the bottom fender (4).

8. A CTC integrated frame for bottom removal of batteries according to claim 5, characterized in that the frame body (3) comprises a plurality of cross beams (32), the mounting portions (33) being provided on the side walls of one or both sides of the cross beams (32); a plurality of battery stack (1) accommodating cavities are formed between the plurality of cross beams (32) and the frame of the frame body (3); the battery pile (1) is a plurality of, and one battery pile (1) or a plurality of battery piles (1) are arranged in the accommodating cavity of one battery pile (1).

9. The CTC integrated frame for bottom removal of batteries according to claim 5 or 8, wherein the mounting portion (33) is plate-shaped with a plurality of threaded holes or a plurality of slots.

10. The CTC integrated frame for bottom removal of batteries according to claim 5, wherein said upper cover (2) is provided with cooling channels, including a water inlet channel (11) and a water outlet channel (12).

11. A CTC integrated frame for bottom removal of batteries according to claim 10, characterized in that said battery stack (1) is provided with a cooling plate (13), said cooling plate (13) being provided with quick connectors (16) at both inlet and outlet; or the cell stack (1) is provided with a plurality of cooling plates (13), the inlet and the outlet of each cooling plate (13) are respectively connected with a water inlet collecting pipe (14) and a water outlet collecting pipe (15), and the water inlet collecting pipe (14) and the water outlet collecting pipe (15) are both provided with quick-plug connectors (16); the water inlet flow passage (11) and the water outlet flow passage (12) are provided with interfaces (17) matched with the quick-connection connectors (16).

12. A vehicle comprising a CTC integrated chassis for bottom removal of a battery of any of claims 5-11.