CN219203270U

CN219203270U - CTP power battery pack

Info

Publication number: CN219203270U
Application number: CN202223340205.3U
Authority: CN
Inventors: 张增高
Original assignee: Cornex New Energy Co ltd
Current assignee: Cornex New Energy Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-06-16
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to the field of power batteries and provides a CTP power battery pack which comprises a box body, a plurality of cooling devices and CTP modules, wherein the cooling devices and the CTP modules are distributed in the box body at equal intervals, one CTP module is arranged between two adjacent cooling devices, can sealing heat-conducting glue is arranged between the CTP modules and the cooling devices, a fastening device is sleeved on the outer side face of the CTP module, and a raised vertical flow guide rib is arranged on one side, close to the cooling devices, of the fastening device. The guide rib plays roles of guiding heat exchange and strength increase, and improves the heat conduction efficiency of the module and the cooling device by arranging the guide rib, and meanwhile, the structural strength of the cooling device is further improved.

Description

CTP power battery pack

Technical Field

The utility model relates to the field of power batteries, in particular to a CTP power battery pack.

Background

The electric vehicle is accepted by society due to the characteristics of energy conservation and environmental protection, and the power battery is used as an energy source of the electric vehicle to directly influence the dynamic property, reliability, safety and economy of the vehicle. The packaging reliability of the square lithium battery with the aluminum shell is high; the system has high energy efficiency; the weight is relatively light, and the energy density is high; the structure is simpler, the expansion is relatively convenient, and the method is an important option for improving the energy density by improving the monomer capacity at present.

The current design process of the module and the pack requires high integration and weight reduction of parts, the module and the pack are required to be designed to be light, the battery cell is required to have a good heat dissipation function, and the pack is required to have quick charging capability, so that the temperature can be effectively and quickly reduced and heated. Along with the increasing requirements of the battery pack on quick charge performance and energy density, CTP (non-module battery technology) and CTC design concepts are promoted, the traditional side plate fixing mode cannot meet the requirements of energy density and increasing heat dissipation, and besides bottom water cooling, the current design requirements on side water cooling are also increasing.

The utility model patent with the patent number of CN114361690A discloses a side water cooling plate structure, and a battery module with CTP configuration is directly connected with the side water cooling plate through heat conduction structural adhesive, and because the strength of the side water cooling plate is limited, the side water cooling and the CTP module cannot be compatible, so that the longitudinal strength of a box body is insufficient, and potential safety hazards are easily caused.

Disclosure of Invention

In view of the above, the utility model provides a CTP power battery pack with high strength of a water cooling plate and good heat dissipation effect.

The technical scheme of the utility model is realized as follows: the utility model provides a CTP power battery pack which comprises a box body, a plurality of cooling devices and CTP modules, wherein the plurality of cooling devices are uniformly distributed in the box body at intervals, one CTP module is arranged between two adjacent cooling devices, a can sealing heat-conducting adhesive is arranged between the CTP module and the cooling devices, a fastening device is sleeved on the outer side face of the CTP module, and a raised vertical flow guide rib is arranged on one side, close to the cooling devices, of the fastening device.

On the basis of the technical scheme, preferably, at least one fastening device is sleeved on the outer side surface of each CTP module.

On the basis of the technical scheme, preferably, the guide ribs of two adjacent fastening devices are arranged in a staggered mode.

On the basis of the technical scheme, preferably, the cross section of the guide rib is one of semicircle, triangle, trapezoid and wave.

On the basis of the technical scheme, preferably, the fastening device is a clamp or a ribbon.

On the basis of the technical scheme, preferably, the cooling device is a water cooling plate or a cooling wing.

On the basis of the technical scheme, the thickness of the cooling device is preferably 2-10cm.

On the basis of the technical scheme, preferably, the box comprises an upper cover, a CTPP ack frame and a bottom plate, wherein the upper cover is detachably arranged on the top of the CTPP ack frame, the bottom plate is detachably arranged on the bottom of the CTPP ack frame, and the bottom plate is a water-cooled plate.

On the basis of the above technical scheme, preferably, the CTP module comprises a plurality of electric cores, the electric cores are arranged in parallel, and the width direction of the electric cores is the same as the length direction of the cooling device.

On the basis of the technical scheme, preferably, the left and right polarities of the adjacent two battery cells are opposite. Compared with the prior art, the CTP power battery pack has the following beneficial effects:

(1) According to the CTP cooling device, the fastening device is sleeved outside the CTP module, so that the strength of the module is improved, meanwhile, the guide ribs are added on the outer side face of the fastening device, and play roles in guiding heat exchange and strength enhancement, so that the heat conduction efficiency of the module and the cooling device is improved, and the structural strength of the cooling device is further improved.

(2) The utility model eliminates the longitudinal beam, uses the cooling device to replace, reduces the weight of the module, and improves the energy density.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of the CTP power cell pack structure of the present utility model;

FIG. 2 is an internal block diagram of the CTP power cell pack of the present utility model;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an enlarged view of portion B of FIG. 2;

fig. 5-8 are exemplary illustrations of flow-guiding ribs on the surface of a CTP power battery pack fastening device of the present utility model.

In the figure, a 1-box body, a 2-cooling device, a 3-CTP module, 4-heat conducting glue, a 5-fastening device, 6-flow guide ribs, an 11-upper cover, a 12-CTPP rack frame, a 13-bottom plate and a 31-electric core.

Detailed Description

The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model. In the description of the present utility model, "plurality" means two or more.

As shown in fig. 1-8, the CTP power battery pack of the present utility model comprises a box 1, a cooling device 2 and a CTP module 3, wherein the box 1 is rectangular, the cooling device 2 is a water cooling plate or a cooling fin, and the thickness is 2-10cm, preferably 6cm; CTP module 3 is a battery module composed of a plurality of square cells 31.

The cooling device 2 and the CTP module 3 are all a plurality of, a plurality of cooling devices 2 are equally spaced inside the box 1, the length direction of the plurality of cooling devices 2 is the same as the length direction of the box 1, an accommodating space is formed between two adjacent cooling devices 2, a CTP module 3 is arranged, a gap is reserved between the CTP module 3 and the cooling devices 2, a heat conducting glue 4 is sealed in the gap, a fastening device 5 is sleeved on the outer side face of the CTP module 3, and one side, close to the cooling device 2, of the fastening device 5 is provided with a raised vertical guide rib 6.

The heat-conducting glue 4 plays a role in increasing the heat dissipation effect between the CTP module 3 and the side cooling device 2 and increasing the structural strength of the cooling device 2.

The thickness of the heat-conducting glue is 0.2-0.5mm, and the CTP module 3 and the cooling device 2 have small gaps, and after the fastening device 5 is sleeved, the fastening device 5 blocks the heat-conducting glue 4 from flowing to the bottom of the box body 1. The raised flow guide ribs 6 play a good role in drainage, so that the heat conduction glue 4 can smoothly flow into the bottom of the box body 1 and fill the gap between the CTP module 3 and the cooling device 2, and therefore the flow guide ribs play a role in increasing the heat conduction and flow guide of the heat conduction glue 4.

In addition, the guide rib 6 is the same as the reinforcing rib, so that the vertical structural strength of the heat conducting glue 4 is increased, and meanwhile, the structural strength of the cooling device is further increased.

In a specific embodiment, the width of the fastening device 5 is smaller than the height of the CTP module 3, the fastening device 5 is a clamp or a ribbon, the ribbon is a plastic ribbon or a rigid ribbon, and at least one fastening device 5 is sleeved on the outer side of each CTP module 3, so that the effect of increasing the strength of the CTP module 3 is achieved.

If there are multiple fastening devices 5, the multiple fastening devices 5 are arranged on the outer side surface of the CTP module 3 in parallel, and the guide ribs 6 of the multiple fastening devices 5 are staggered. As shown in fig. 1, two fastening devices 5 are provided, two fastening devices are hoops, and the flow guide ribs on the two hoops are staggered.

In a specific embodiment, the guide rib 6 protrudes from the surface of the fastening device 5, and the cross section of the guide rib 6 has various shapes, such as a semicircle, a triangle, a trapezoid or a wave (see fig. 5-8).

As shown in fig. 1, the case 1 includes an upper cover 11, a CTPPack frame 12, and a bottom plate 13, wherein the upper cover 11 is detachably mounted on the top of the CTPPack frame 12, the bottom plate 13 is detachably mounted on the bottom of the CTPPack frame 12, and the bottom plate 13 is a water-cooled plate.

In a specific embodiment, the CTP module 3 includes a plurality of electric cores 31, the electric cores 31 are arranged in parallel, the electric cores 31 are connected with the electric cores 31 in an adhesive connection manner, no water cooling plate is arranged between two adjacent electric cores 31, the width direction of the electric cores 31 is the same as the length direction of the cooling device 2, and the left and right polarities of the two adjacent electric cores 31 are opposite, so that the adjacent electric cores 31 are more convenient to connect in series, and the electric cores 31 are connected in series at two sides of the length direction through series connection sheets.

According to the CTP power battery pack, the side water cooling plates or cooling fins are used for replacing longitudinal beams, so that the weight of a module is reduced, and the overall pack energy density is improved; meanwhile, the flow guide ribs are added, so that the heat conduction efficiency between the module and the cooling plate or the cooling fins is improved, and the structural strength of the water cooling module is further improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a CTP power battery package, includes box (1), cooling device (2) and CTP module (3) all have a plurality ofly, a plurality of cooling device (2) equidistant distribution in inside box (1), adjacent two be equipped with one between cooling device (2) CTP module (3), CTP module (3) with seal jar heat conduction glue (4), its characterized in that between cooling device (2): the outer side surface of the CTP module (3) is sleeved with a fastening device (5), and one side of the fastening device (5) close to the cooling device (2) is provided with a raised vertical guide rib (6).

2. The CTP power battery pack according to claim 1, wherein: at least one fastening device (5) is sleeved on the outer side surface of each CTP module (3).

3. The CTP power battery pack according to claim 2, wherein: the guide ribs (6) of two adjacent fastening devices (5) are arranged in a staggered manner.

4. The CTP power battery pack according to claim 1, wherein: the cross section of the guide rib (6) is one of semicircle, triangle, trapezoid and wave.

5. The CTP power battery pack according to claim 1, wherein: the fastening device (5) is a clamp or a ribbon.

6. The CTP power battery pack according to claim 1, wherein: the cooling device (2) is a water cooling plate or a cooling wing.

7. The CTP power battery pack according to claim 1, wherein: the thickness of the cooling device (2) is 2-10cm.

8. The CTP power battery pack according to claim 1, wherein: the box body (1) comprises an upper cover (11), a CTP Pack frame (12) and a bottom plate (13), wherein the upper cover (11) is detachably installed on the top of the CTP Pack frame (12), the bottom plate (13) is detachably installed at the bottom of the CTP Pack frame (12), and the bottom plate (13) is a water cooling plate.

9. The CTP power battery pack according to claim 1, wherein: the CTP module (3) comprises a plurality of electric cores (31), the electric cores (31) are arranged in parallel, and the width direction of the electric cores (31) is the same as the length direction of the cooling device (2).

10. The CTP power battery pack as recited in claim 9, wherein: the left and right polarities of the adjacent two battery cells (31) are opposite.