Large module structure of novel integrated liquid cooling plate

Abstract

The utility model relates to the technical field of battery packs, in particular to a large module structure of a novel integrated liquid cooling plate, which comprises a plurality of battery cell modules, each battery cell module consists of a plurality of battery cells, and a battery cell transverse partition plate is arranged between every two adjacent battery cells; a battery cell longitudinal partition plate is arranged between every two adjacent battery cell modules; the battery cell modules are mutually spliced to form a single-layer battery cell module; a liquid cooling plate is arranged at the bottom, and mutually symmetrical module end plates are arranged on the liquid cooling plate; the two module end plates act on the two ends of the single-layer battery cell module respectively; the single-layer battery cell module and the outer side module of the two module end plates are tightly hooped by a binding belt; and a CCS assembly capable of corresponding to each battery cell in each battery cell module is arranged above the single-layer battery cell module. The large module structure provided by the scheme is simple in structure, can be used for orderly transversely or longitudinally stacking the battery cell modules, is compact in structure after being connected, is not easy to displace, and is also easy to disassemble and maintain in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a novel large module structure of an integrated liquid cooling plate. Background Art

[0002] At present, new energy vehicles have attracted wide attention from all walks of life due to their excellent environmental performance. The requirements for new energy vehicles are also constantly increasing. As a new energy vehicle, electric vehicles are also developing in the direction of high safety, high energy ratio and light weight. The main factor that determines the mileage of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different models to meet driving requirements.

[0003] The power supply battery for electric vehicles is generally a battery pack composed of multiple battery modules, which are spliced ​​horizontally or up and down and then fixed by an outer frame. When this frame structure fixes multiple battery modules, when the battery modules are hit or vibrated externally, it is very easy to cause the displacement between the battery modules stacked up and down or left and right, and it is not easy to install the heat dissipation coolant device for dissipating heat from the battery, which in turn affects the life of the battery pack; in addition, this structure is not conducive to the rapid disassembly and maintenance of the battery cells that constitute the battery module.

[0004] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned problems of the prior art and to provide a new large module structure of an integrated liquid cooling plate, which is used to solve the technical problems that the frame structure is prone to displacement between the stacked battery modules up and down or left and right due to external collision, as well as the troublesome disassembly and the difficulty in installing the cooling device, thus affecting the life of the battery pack.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A novel large module structure of an integrated liquid cooling plate includes a plurality of battery modules, each of which is composed of a plurality of battery cells, and a battery cell transverse partition is provided between adjacent battery cells; a battery cell longitudinal partition is provided between adjacent battery cell modules; each of the battery cell modules is spliced ​​together to form a single-layer battery cell module;

[0008] A liquid cooling plate is provided at the bottom of the single-layer battery module, and mutually symmetrical module end plates are provided on the liquid cooling plate; the two module end plates act on the two ends of the single-layer battery module respectively; the outer side of the single-layer battery module and the two module end plates are tightly bound with module tie bands;

[0009] A CCS assembly corresponding to each of the battery cells in each of the battery cell modules is arranged above the single-layer battery cell module.

[0010] Furthermore, a plurality of first bolt through holes are arranged on the module end plate, and second bolt through holes corresponding to the first bolt through holes are opened on the liquid cooling plate. Bolts penetrate the first bolt through holes from the top of the module end plate downward and are screwed to the second bolt through holes.

[0011] Furthermore, there are three second bolt through holes on each module end plate, which are arranged at equal intervals.

[0012] Furthermore, the longitudinal partition of the battery cell is an insulating plate.

[0013] Furthermore, double-sided adhesive tapes are provided on both sides of the longitudinal separator of the battery cell, respectively, for bonding the battery cells on both sides thereof.

[0014] Furthermore, the height of the longitudinal partition of the battery cell is not higher than the height of the battery cell.

[0015] Furthermore, a heat preservation plate is provided between the two ends of the single-layer battery cell module and the two module end plates.

[0016] Furthermore, the insulation board is an insulation cotton board.

[0017] Furthermore, the cell transverse partition is made of insulating material.

[0018] Furthermore, the liquid cooling plate includes a first liquid cooling plate that can contact the bottom of the single-layer battery cell module, and a second liquid cooling plate with a flow channel arranged on the lower side of the first liquid cooling plate, and the first liquid cooling plate and the second liquid cooling plate are connected to each other to form a liquid cooling channel; a first liquid inlet and outlet interface and a second liquid inlet and outlet interface that can connect to the liquid cooling channel are arranged on the first liquid cooling plate.

[0019] Beneficial Effects

[0020] The utility model provides a new large module structure with integrated liquid cooling plate, which realizes the rapid assembly of battery module by trusting the transverse partition and the longitudinal partition of the battery, and realizes the end clamping by the module end plates arranged at both ends, and realizes the compact connection under the action of the module tie; and realizes the overall heat dissipation of the single-layer battery module by the liquid cooling plate arranged at the bottom. The large module structure provided by this scheme is not only simple in structure, and can orderly stack the battery modules horizontally or vertically, but also has a compact structure after connection, is not easy to shift, and is easy to disassemble and maintain later. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a first-view structural schematic diagram of a large module structure of a novel integrated liquid cooling plate described in the utility model;

[0022] Figure 2This is a second perspective structural schematic diagram of a large module structure of a novel integrated liquid cooling plate described in the utility model;

[0023] Figure 3 This is an exploded view of a large module structure of a novel integrated liquid cooling plate described in the utility model;

[0024] Figure 4 A schematic diagram of the connection between the battery cell and the battery cell transverse partition of a large module structure of a novel integrated liquid cooling plate described in the utility model;

[0025] Figure 5 This is a schematic diagram of the connection between the liquid cooling plate and the single-layer battery cell module in the large module structure of a novel integrated liquid cooling plate described in the utility model.

[0026] Graphic marking:

[0027] 1-battery cell module, 101-battery cell;

[0028] 2- horizontal separator of battery cell;

[0029] 3- Longitudinal separator of battery cell;

[0030] 4- Single-layer battery cell module;

[0031] 5-liquid cooling plate, 501-second bolt through hole, 502-first liquid cooling plate, 503-second liquid cooling plate, 504-flow channel, 505-liquid cooling channel, 506-first liquid inlet and outlet interface, 507-second liquid inlet and outlet interface;

[0032] 6-module end plate, 601-first bolt through hole;

[0033] 7- Insulation board;

[0034] 8-module cable ties;

[0035] 9-CCS assembly. DETAILED DESCRIPTION

[0036] The utility model is further described in detail below based on the accompanying drawings and embodiments. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] like Figure 1 to Figure 3As shown, the present solution provides a novel large module structure of an integrated liquid cooling plate, including a plurality of battery modules 1, each of the battery modules 1 is composed of a plurality of battery cells 101, and a battery cell transverse partition 2 is arranged between adjacent battery cells 101; a battery cell longitudinal partition 3 is arranged between adjacent battery cell modules 1; each of the battery cell modules 1 is spliced ​​together to form a single-layer battery cell module 4;

[0038] A liquid cooling plate 5 is provided at the bottom of the single-layer battery module 4, and a mutually symmetrical module end plate 6 is provided on the liquid cooling plate 5; the two module end plates 6 act on the two ends of the single-layer battery module 4 respectively to limit the two ends of the single-layer battery module 4; the outer module tie 8 of the single-layer battery module 4 and the two module end plates 6 is tightly bound;

[0039] A CCS assembly 9 corresponding to each of the battery cells 101 in each of the battery cell modules 1 is arranged above the single-layer battery cell module 4. The CCS assembly 9 is an electronic component in the battery responsible for connecting the battery cell with the external circuit. Its main function is to convert the electric energy of the battery cell into electric energy that can be output to external equipment. At the same time, the CCS assembly 9 can also monitor parameters such as the voltage, current and temperature of the battery cell 101 to ensure the safe operation of the battery.

[0040] Specifically, in this embodiment, the two module tie ties 8 and the single-layer battery cell module 4 are connected to each other to form a rectangular structure, which can compact the battery cells 101 in each battery cell module 1; and the two module end plates 6 are respectively connected to the liquid cooling plate 5 to achieve rapid assembly.

[0041] As a form of connection between the module end plate 6 and the liquid cooling plate 5 in this embodiment, a plurality of first bolt through holes 601 are provided on the module end plate 6, and second bolt through holes 501 corresponding to the first bolt through holes 601 are opened on the liquid cooling plate 5. Bolts penetrate the first bolt through holes 601 from the top of the module end plate 6 downward and are screwed to the second bolt through holes 501, thereby realizing a vertical connection between the module end plate 6 and the liquid cooling plate 5.

[0042] As a specific embodiment of the present solution, there are three second bolt through holes 501 on each module end plate 6, which are arranged at equal intervals; this structure can realize the vertical connection of the module end plate 6 tightly to the liquid cooling plate 5, thereby increasing stability.

[0043] It should be noted that the longitudinal separator 3 of the battery cell in this embodiment is an insulating plate, which can effectively prevent the battery cell on one side from thermally running away and then being transmitted to the other side to cause a chain reaction.

[0044] Specifically, double-sided adhesives are provided on both sides of the longitudinal separator 3 of the battery cell for bonding the battery cells 101 on both sides thereof; this structure can effectively prevent the battery cells from generating Z-direction displacement.

[0045] As Figure 3 shown, in this embodiment, heat insulation plates 7 are provided between the two ends of the single-layer battery cell module 4 and the two module end plates 6. It has an insulation function, a heat insulation effect, and can provide a group force for the battery.

[0046] Specifically, the heat insulation plate 7 is a heat insulation cotton plate, which is a new type of non-toxic, harmless, and pollution-free heat insulation material made from raw materials such as high-purity clay clinker, alumina powder, silica powder, and chromite sand.

[0047] In addition, as Figure 3-4 shown, in this embodiment, the transverse separator 2 of the battery cell is made of an insulating material, which can be made of a modified polypropylene material or aerogel, and its shape can be set as a zigzag shape. In this embodiment, the transverse separator 2 of the battery cell has an insulation function, a heat insulation effect, and can provide a group force for the battery.

[0048] As Figure 5 shown, in this embodiment, the liquid cooling plate 5 includes a first liquid cooling plate 502 that can contact the bottom of the single-layer battery cell module 4, and a second liquid cooling plate 503 with a flow channel groove 504 provided on the lower side of the first liquid cooling plate 502. The first liquid cooling plate 502 and the second liquid cooling plate 503 are connected to each other to form a liquid cooling channel 505; a first liquid inlet / outlet interface 506 and a second liquid inlet / outlet interface 507 that can communicate with the liquid cooling channel 505 are provided on the first liquid cooling plate 502.

[0049] Specifically, when the first liquid cooling plate 502 and the second liquid cooling plate 503 are connected to each other, the outside of the flow channel groove 504 and the first liquid cooling plate 502 form the liquid cooling channel 505. The first liquid inlet / outlet interface 506 and the second liquid inlet / outlet interface 507 correspond to the two ends of the liquid cooling channel 505 respectively. By connecting the first liquid inlet / outlet interface 506 and the second liquid inlet / outlet interface 507 to an external hose, it is possible to input a coolant into the liquid cooling channel 505, thereby realizing the cooling of the first liquid cooling plate 502 that contacts the bottom of the single-layer battery cell module 4.

[0050] It should be noted that in this embodiment, the first liquid cooling plate 502 is a flat plate, and this structure can completely contact the bottom of the single-layer battery cell module 4, thereby better realizing heat dissipation.

[0051] In addition, the liquid cooling channel 505 can be set into any shape that increases the heat dissipation area, such as an S shape, etc.

[0052] The above description is only for illustrating the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel large module structure of an integrated liquid cooling plate, characterized in that: It comprises a plurality of battery cell modules (1), each of the battery cell modules (1) being composed of a plurality of battery cells (101), a battery cell transverse partition (2) being arranged between adjacent battery cells (101); a battery cell longitudinal partition (3) being arranged between adjacent battery cell modules (1); and each of the battery cell modules (1) being spliced ​​together to form a single-layer battery cell module (4); A liquid cooling plate (5) is provided at the bottom of the single-layer battery module (4), and mutually symmetrical module end plates (6) are provided on the liquid cooling plate (5); the two module end plates (6) act on the two ends of the single-layer battery module (4) respectively; the outer sides of the single-layer battery module (4) and the two module end plates (6) are tightly bound with module tie bands (8); A CCS assembly (9) corresponding to each of the battery cells (101) in each of the battery cell modules (1) is arranged above the single-layer battery cell module (4).

2. According to claim 1, a large module structure of a novel integrated liquid cooling plate is characterized in that: A plurality of first bolt through holes (601) are provided on the module end plate (6), and second bolt through holes (501) corresponding to the first bolt through holes (601) are opened on the liquid cooling plate (5). Bolts penetrate the first bolt through holes (601) from the top of the module end plate (6) downward and are screwed to the second bolt through holes (501).

3. The large module structure of a novel integrated liquid cooling plate according to claim 2 is characterized in that: There are three second bolt through holes (501) on each module end plate (6), which are arranged at equal intervals.

4. The large module structure of a novel integrated liquid cooling plate according to claim 1 is characterized in that: The battery core longitudinal partition (3) is an insulating plate.

5. A novel large module structure of an integrated liquid cooling plate according to claim 1 or 4, characterized in that: Double-sided adhesive tape is provided on both sides of the battery core longitudinal partition (3) for bonding the battery cores (101) on both sides thereof.

6. The large module structure of a novel integrated liquid cooling plate according to claim 1 is characterized in that: The height of the battery core longitudinal partition (3) is not higher than the height of the battery core (101).

7. The large module structure of a novel integrated liquid cooling plate according to claim 1 is characterized in that: Insulation plates (7) are provided between the two ends of the single-layer battery module (4) and the two module end plates (6).

8. The large module structure of a novel integrated liquid cooling plate according to claim 7 is characterized in that: The thermal insulation board (7) is a thermal insulation cotton board.

9. The large module structure of a novel integrated liquid cooling plate according to claim 1 is characterized in that: The cell transverse partition (2) is made of insulating material.

10. The large module structure of a novel integrated liquid cooling plate according to claim 1 is characterized in that: The liquid cooling plate (5) comprises a first liquid cooling plate (502) capable of contacting the bottom of the single-layer battery cell module (4), and a second liquid cooling plate (503) with a flow channel groove (504) arranged at the lower side of the first liquid cooling plate (502), wherein the first liquid cooling plate (502) and the second liquid cooling plate (503) are connected to each other to form a liquid cooling channel (505); a first liquid inlet and outlet interface (506) and a second liquid inlet and outlet interface (507) capable of communicating with the liquid cooling channel (505) are arranged on the first liquid cooling plate (502).

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