CN214477764U

CN214477764U - CTP battery pack

Info

Publication number: CN214477764U
Application number: CN202120871719.8U
Authority: CN
Inventors: 张芳芳; 陆荣华; 聂瑞超
Original assignee: Wuhan Weineng Battery Assets Co ltd
Current assignee: Wuhan Weineng Battery Assets Co ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-10-22
Anticipated expiration: 2031-04-26

Abstract

The utility model discloses a CTP battery package, including setting up the water-cooling board in the battery package, be provided with a plurality of mounting grooves on the up end of water-cooling board, every battery cell's bottom connect respectively in the mounting groove. Through the mode, the water cooling plate is provided with the mounting grooves, and the single batteries are connected in the mounting grooves in a gluing mode, so that the single batteries can be maintained and replaced, the cost is greatly reduced, and the safety performance of the batteries is improved; and, there is the heat dissipation way between the mounting groove for the radiating effect of group battery is better.

Description

CTP battery pack

Technical Field

The utility model relates to a lithium cell field especially relates to a CTP battery package.

Background

With the development of new energy cause in China, the energy density of a battery pack is gradually increased, and ctp (cell to pack) is used as a technology for increasing the energy density of the battery pack. The CTP (cell to pack) technology simplifies the manufacturing process of battery-module-package into battery-package, saves the intermediate process of module, and can greatly reduce the weight of the whole package, thereby improving the energy density. However, the CTP battery pack has a large difficulty in repairing the damaged battery due to the fact that the battery is adhered to the bottom plate, and the whole pack may need to be replaced. Meanwhile, under the impact working condition of the battery, the impact inertia force can increase the risk of glue failure. This increases the cost and safety risk of the battery pack to some extent.

The prior art discloses a box structure of a CTP battery pack, which comprises a box frame, a side plate structure, a partition plate structure and a water cooling plate structure, wherein the box frame comprises a frame main body, and the frame main body is provided with a box accommodating cavity; the side plate structure comprises two side plates which are respectively fixed on two side walls of the accommodating cavity of the box body; the partition plate structure comprises a plurality of transverse partition plates which are arranged side by side at intervals, two ends of the plurality of transverse partition plates are connected between the two side plates to divide the box body accommodating cavity into a plurality of accommodating cavities, and the plurality of accommodating cavities are used for accommodating batteries; the water-cooling plate structure comprises a water-cooling bottom plate, a water inlet pipe and a water outlet pipe, wherein the water-cooling bottom plate is arranged at the bottom of the box body frame, and the water inlet pipe and the water outlet pipe penetrate through the box body frame to be communicated with the water-cooling bottom plate.

Although the technology adopts the containing cavity to contain the battery, the containing cavity is formed after the internal space of the box body is separated by the diaphragm plate, the structure makes the internal structure of the battery pack more complicated, the weight of the battery pack is increased, and the diaphragm plate is in close contact with the battery and is not beneficial to heat dissipation.

Therefore, it is necessary to design a CTP battery pack that has a simple structure, low cost, high battery safety, good battery heat dissipation, and can replace a single battery.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems, the utility model provides a CTP battery pack, which is characterized in that a plurality of mounting grooves are arranged on a water cooling plate, and a single battery is glued in the mounting grooves, so that the single battery can be maintained and replaced, the cost is greatly reduced, and the safety performance of the battery is improved; and, there is the heat dissipation way between the mounting groove for the radiating effect of group battery is better.

In order to achieve the above object, the utility model adopts the following technical scheme:

a CTP battery pack comprises a water cooling plate arranged in the battery pack; a plurality of mounting grooves are formed in the upper end face of the water cooling plate, and the bottom end of each single battery is connected into each mounting groove.

Furthermore, the installation grooves comprise a plurality of region installation grooves which are arranged at intervals, and a heat dissipation channel is arranged between every two adjacent region installation grooves.

Further, each of the region mounting grooves includes at least two mounting grooves.

Furthermore, a plurality of regional mounting grooves including set up respectively in first regional mounting groove, second regional mounting groove, third regional mounting groove and the fourth regional mounting groove of the edge of water-cooling plate, first regional mounting groove, second regional mounting groove, third regional mounting groove and fourth regional mounting groove are provided with between each other and are "cross form" the heat dissipation is said.

Furthermore, the installation grooves are arranged at intervals.

Further, the single battery is glued in the mounting groove through an adhesive.

Further, the single batteries are connected in series or in parallel with each other to form a battery pack.

Furthermore, a heat management module is integrated in the water cooling plate and used for cooling the battery pack.

Further, the top of group battery is provided with the BMS mounting panel, the integration is provided with BMS control module on the BMS mounting panel, BMS control module with thermal management module electricity is connected.

Further, a cooling cavity containing cooling liquid is formed between the water cooling plate and the lower shell, a liquid inlet and a liquid outlet are formed in the lower shell, and the liquid inlet and the liquid outlet are used for achieving exchange of the cooling cavity and the external cooling liquid.

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

1. the utility model discloses a set up a plurality of mounting grooves on the water-cooling board to splice single cell in the mounting groove, compare in prior art electric core directly glue and connect on the bottom plate, single cell separately the mode that splices makes single cell maintain and change, and reduced the use amount of adhesive, the cost is reduced, and the mounting groove plays certain spacing and supporting role to the battery, make the battery package when receiving the impact, be difficult to open and glue, the security performance of battery has been improved greatly.

2. The utility model discloses a set up the mounting groove interval for form the heat dissipation way between the battery cell, keep good heat dissipation circulation, the battery heat dissipation of being convenient for.

Drawings

Fig. 1 is an exploded view schematically illustrating embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a water-cooling plate according to embodiment 1 of the present invention;

fig. 3 is a schematic view of the area distribution of the installation groove of embodiment 1 of the present invention;

fig. 4 is a schematic structural view of a water-cooling plate according to embodiment 2 of the present invention;

the parts in the drawings are numbered as follows: 101. a lower housing; 1011. a liquid inlet; 1012. a liquid outlet; 102. a water-cooling plate; 1021. mounting grooves; 1022. a heat dissipation channel; 1023. a first region mounting groove; 1024. a second region mounting groove; 1025. a third area mounting groove; 1026. a fourth region mounting groove; 103. a single battery; 104. a BMS mounting plate; 1041. a BMS control module; 105. and an upper housing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not relevant to the present invention are omitted.

In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

As shown in fig. 1 to 2, a CTP battery pack includes an upper case 105 and a lower case 101 connected to each other, and a water cooling plate 102, a battery pack, and a BMS mounting plate 104 are sequentially disposed from bottom to top in a cavity formed by the upper case 105 and the lower case 101. The upper end surface of the water cooling plate 102 is provided with a plurality of mounting grooves 1021, and the bottom end of each single battery 103 is connected in the mounting grooves 1021 respectively. Particularly, the installation direction of each installation groove 1021 is kept consistent, which is convenient for saving the internal space. The unit cells 103 are glued in the mounting grooves 1021 by an adhesive. So set up, through set up a plurality of mounting grooves 1021 on water-cooling board 102, and splice battery cell 103 in mounting groove 1021, compare in prior art battery cell direct gluing connect on the bottom plate, the mode that battery cell 103 part splices makes battery cell 103 maintain and change, and reduced the use amount of adhesive, the cost is reduced, and mounting groove 1021 plays certain spacing and supporting role to the battery, make the battery when receiving the impact, be difficult to open glue, the security performance of battery has been improved greatly.

As shown in fig. 2, in some embodiments, the mounting grooves 1021 include a plurality of region mounting grooves, and the region mounting grooves are arranged at intervals, so that a heat dissipation channel 1022 is formed between two adjacent region mounting grooves, and the batteries in different region mounting grooves are separated to maintain a certain distance, which is beneficial to forming a good heat dissipation cycle. Each region mounting groove comprises at least two mounting grooves 1021; and, the mounting grooves 1021 in each section mounting groove are immediately adjacent to each other to ensure that the unit cells 103 fixed in each section mounting groove are closely arranged, effectively utilizing the space in the battery pack. So set up, mounting groove 1021 is regional distribution, has not only sparingly installed the space, has still guaranteed the heat dissipation between the battery cell 103 to battery regional distribution also does benefit to the battery cell 103 of follow-up quick replacement damage.

As shown in fig. 3, specifically, the plurality of area mounting grooves include a first area mounting groove 1023, a second area mounting groove 1024, a third area mounting groove 1025, and a fourth area mounting groove 1026 respectively disposed at corners of the water cooling plate 102, and the first area mounting groove 1023, the second area mounting groove 1024, the third area mounting groove 1025, and the fourth area mounting groove 1026 are provided with a heat dissipation channel 1022 in a "cross shape" therebetween. It should be noted that the number and arrangement of the mounting grooves 1021 in the first section mounting groove 1023, the second section mounting groove 1024, the third section mounting groove 1025 and the fourth section mounting groove 1026 can be adjusted according to the shape of the water cooling plate 102, the size of the space inside the box body or the row of the single batteries 103.

Meanwhile, according to the understanding of the technical solution of the present invention by the skilled in the art, the number and arrangement of the regional mounting grooves 1021 in the present invention can be adjusted as required, for example, six or eight groups of regional mounting grooves 1021 are provided, and two rows or three rows of two or three rows of two are provided for the single battery 103 in the regional mounting grooves 1021, so that the above equivalent structure can be understood as the equivalent embodiment of the present invention.

In some embodiments (as shown in fig. 1 in particular), the cells 103 are connected in series or in parallel with each other to form a battery pack. The wiring between the battery packs is arranged according to the structural adaptability of the mounting groove 1021. In addition, a heat management module for cooling the battery pack is integrated in the water cooling plate 102. Specifically, a BMS mounting plate 104 is disposed above the battery pack, a BMS control module 1041 is integrally disposed on the BMS mounting plate 104, and the BMS control module 1041 is electrically connected to the thermal management module. The start and stop of the thermal management module are controlled by the BMS control module 1041 to timely cool the battery pack according to the internal temperature feedback of the battery pack.

In some embodiments (specifically, as shown in fig. 1), a cooling cavity for accommodating a cooling liquid is formed between the water-cooling plate 102 and the lower housing 101, a liquid inlet 1011 and a liquid outlet 1012 are disposed on the lower housing 101, and the liquid inlet 1011 and the liquid outlet 1012 are used for exchanging the cooling cavity with an external cooling liquid, so as to implement a cooling cycle of the cooling liquid.

Example 2

As shown in fig. 4, in the present embodiment, the mounting grooves 1021 are spaced apart from each other. Certain gaps exist between every two adjacent mounting grooves 1021, so that any two adjacent single batteries 103 are distributed at intervals, and stable thermal circulation is formed between the single batteries 103 conveniently.

Other structures of the present embodiment are the same as those of embodiment 1 except for the above structure.

The above description is only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings of the utility model, or the direct or indirect application in other related technical fields, are included in the patent protection scope of the utility model.

Claims

1. A CTP battery pack comprising a water-cooled plate (102) disposed within the battery pack; the water cooling plate is characterized in that a plurality of mounting grooves (1021) are formed in the upper end face of the water cooling plate (102), and the bottom end of each single battery (103) is connected into each mounting groove (1021).

2. The CTP battery pack according to claim 1, wherein said plurality of mounting grooves (1021) comprises a plurality of region mounting grooves, said plurality of region mounting grooves are spaced apart from each other, and a heat dissipation channel (1022) is disposed between two adjacent region mounting grooves.

3. The CTP battery pack according to claim 2, wherein each of said region mounting grooves comprises at least two of said mounting grooves (1021).

4. The CTP battery pack of claim 3, wherein the plurality of zone mounting grooves comprise a first zone mounting groove (1023), a second zone mounting groove (1024), a third zone mounting groove (1025), and a fourth zone mounting groove (1026) respectively disposed at corners of the water-cooling plate (102), the first zone mounting groove (1023), the second zone mounting groove (1024), the third zone mounting groove (1025), and the fourth zone mounting groove (1026) being disposed with the heat dissipation channel (1022) in a cross shape therebetween.

5. The CTP battery pack according to claim 1, wherein said several mounting grooves (1021) are arranged at intervals.

6. The CTP battery pack according to claim 1, wherein said single battery (103) is glued in said mounting groove (1021) by an adhesive.

7. The CTP battery pack according to claim 1, wherein said single cells (103) are connected in series or in parallel to each other to form a battery pack.

8. The CTP battery pack according to claim 7, wherein a thermal management module is integrated in said water cooling plate (102) for cooling said battery pack.

9. The CTP battery pack according to claim 8, wherein a BMS mounting plate (104) is disposed above said battery pack, a BMS control module (1041) is integrally disposed on said BMS mounting plate (104), and said BMS control module (1041) is electrically connected to said thermal management module.

10. The CTP battery pack according to claim 1, wherein a cooling cavity containing a cooling liquid is formed between said water cooling plate (102) and said lower casing (101), said lower casing (101) is provided with a liquid inlet (1011) and a liquid outlet (1012), said liquid inlet (1011) and said liquid outlet (1012) are used for exchanging said cooling cavity with an external cooling liquid.