CN220324536U - Battery pack with high integration efficiency - Google Patents

Abstract

The utility model relates to the technical field of battery cooling equipment, in particular to a battery pack with high integration efficiency, which comprises a circulating pipe assembly and a battery, wherein the battery pack also comprises a cooling frame; the cooling rack is provided with at least two cooling plates; the cooling plates are arranged at intervals; the battery is erected on two adjacent cooling plates, and the bottom end surface of the battery is at least partially suspended; a diversion channel is formed in the cooling plate along the length direction of the cooling plate; the circulating pipe assembly is provided with a water outlet pipe and a water inlet pipe; one end of the flow guide channel of the cooling plate is connected with the water inlet pipe, and the other end of the flow guide channel of the cooling plate is connected with the water outlet pipe.

Description

Battery pack with high integration efficiency

Technical Field

The utility model relates to the technical field of battery cooling equipment, in particular to a battery pack with high integration efficiency.

Background

In order to meet the requirements of the endurance mileage of the electric automobile, the energy density of the battery pack is gradually increased, and the heating problem caused by the energy density is also a key element for restricting the technical research of the battery; because the liquid cooling heat exchange efficiency is better, the prior art adopts the liquid cooling temperature control mode that the cooling rack is attached to the battery module to replace the traditional air cooling temperature control mode that natural wind or air convection sweeps the battery surface.

At present, in order to be safe, the bottom of the battery is provided with an explosion-proof valve, the explosion-proof valve is of a thin sheet structure with smaller thickness, and when the air pressure changes due to temperature change in the battery, the explosion-proof valve can generate corresponding deformation so as to offset the air pressure change in the battery. When the internal air pressure of the battery is increased beyond the threshold value of the explosion-proof valve, the explosion-proof valve is exploded, so that the problem that the shell of the battery bursts is avoided.

In the prior art, as a cooling rack and a battery in China patent, the publication number is: CN219267747U specifically discloses that is provided with the double flow way of spiraling the arrangement inside the cooling frame, with the battery setting on the cooling frame, reach the radiating purpose of battery module through the bottom of battery and cooling between the frame, under certain circumstances, when explosion-proof valve explodes, the high heat energy air of battery spouts to the cooling frame, cause blocking because of battery and cooling frame closely laminating among the prior art and make high heat energy air can not in time discharge, the explosion-proof valve of this moment loses in time with the inside high pressure gas of battery directly diverges the function in order to protect the battery, further lead to the inside excessive pressure of battery or the too high temperature causes bigger interlocking reaction to cause bigger loss.

Disclosure of Invention

In view of the shortcomings of the prior art, the present utility model aims to provide a battery pack with high integration efficiency, which can improve the safety of the battery pack.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the battery pack with high integration efficiency comprises a circulating pipe assembly and a battery, and further comprises a cooling frame; the cooling rack is provided with at least two cooling plates; the cooling plates are arranged at intervals; the battery is erected on two adjacent cooling plates, and the bottom end surface of the battery is at least partially suspended; a diversion channel is formed in the cooling plate along the length direction of the cooling plate; the circulating pipe assembly is provided with a water outlet pipe and a water inlet pipe; one end of the flow guide channel of the cooling plate is connected with the water inlet pipe, and the other end of the flow guide channel of the cooling plate is connected with the water outlet pipe.

Preferably, the cooling rack further has a plurality of partitions; the baffle and cooling plate one-to-one set up, wherein, the baffle is fixed to be set up in the upper end of cooling plate and the principal plane of cooling plate is perpendicular with the principal plane of baffle.

Preferably, a diversion channel is arranged in the partition board along the length direction of the partition board; one end of the flow guide channel of the partition board is connected with the water inlet pipe, and the other end of the flow guide channel of the partition board is connected with the water outlet pipe.

Preferably, a control valve is further arranged between the partition plate and the water inlet pipe.

Preferably, the two adjacent cooling plates are aligned in the longitudinal direction.

Preferably, the cooling rack is in an L-shaped structure or an inverted T-shaped structure.

Preferably, a plurality of diversion channels are arranged in the cooling plate.

Preferably, a plurality of diversion channels of the partition board are arranged.

Preferably, the battery pack further includes a case; the housing has a bottom plate; the cooling rack is arranged on the bottom plate.

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

the cooling plates of the cooling frames are distributed at intervals, the batteries are arranged on the two adjacent cooling plates, and at least part of the bottoms of the batteries are not contacted with the cooling plates, so that the cooling plates can not block the explosion-proof valve, the explosion-proof valve can be ensured to play a role under the condition of overhigh internal temperature and pressure of the batteries, and the safety of the battery pack is improved;

through set up the baffle in the cooling frame, set up cold liquid water conservancy diversion passageway in the baffle, the water conservancy diversion passageway in the baffle is connected with circulating pipe subassembly, has improved the radiating efficiency of battery side, has further improved the security of battery package.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the cooling rack of the present utility model;

fig. 3 is a schematic view showing the structure of the battery pack according to the present utility model with the outer casing removed;

fig. 4 is a schematic view showing the structure of the battery pack according to the present utility model with the lower side of the case removed;

fig. 5 is a schematic structural diagram of a second embodiment of the present utility model.

In the figure: the cooling system comprises a first cooling frame, a second cooling frame, a 3-circulation pipe assembly, a 31 shunt pipe, a 32 collecting pipe, a 33-connection pipe, a 34-outlet pipe, a 35-inlet pipe, a 4-shell, a 5-battery, a 51 explosion-proof valve, a 6-cooling plate, a 7-partition board and an 8-diversion channel.

Detailed Description

The following detailed description of the utility model, taken in conjunction with the accompanying drawings, will provide those skilled in the art with a more readily understood understanding of how the utility model may be practiced. While the present utility model has been described in connection with the preferred embodiments thereof, these embodiments are set forth only and are not intended to limit the scope of the utility model.

First embodiment: referring to fig. 1-4, a high integration efficiency battery pack, comprising: the cooling system comprises a first cooling frame 1, a second cooling frame 2, a circulating pipe assembly 3, a shell 4 and a battery 5, wherein the first cooling frame 1, the second cooling frame 2, the circulating pipe assembly 3 and the battery 5 are arranged in the shell 4; the housing 4 has a bottom plate.

Referring to fig. 2, the first cooling rack 1 and the second cooling rack 2 are each composed of a cooling plate 6 and a partition plate 7, wherein the main plane of the cooling plate 6 is perpendicular to the main plane of the partition plate 7; the first cooling rack 1 is in an L-shaped structure, and the second cooling rack 2 is in an inverted T-shaped structure; a plurality of diversion channels 8 which are mutually parallel are arranged in the cooling plate 6 along the length direction.

Referring to fig. 3 and 4, two first cooling frames 1 are provided, and the two first cooling frames 1 are provided as side frames on two opposite sides of the second cooling frame 2; the second cooling rack 2 is also provided with two; the first cooling rack 1 and the second cooling rack 2 are fixedly arranged on the bottom plate of the shell 4 in a line, and a space is reserved between the cooling racks, so that a distance is reserved between two cooling plates 6 at adjacent positions.

The circulating pipe assembly 3 comprises a shunt pipe 31, a collecting pipe 32, a connecting pipe 33, a water outlet pipe 34 and a water inlet pipe 35; the shunt pipes 31 are arranged on the front sides of the first cooling frame 1 and the second cooling frame 2, and the shunt pipes 32 are arranged on the rear sides of the first cooling frame 1 and the second cooling frame 2; the shunt tubes 31 and the collection tubes 32 are communicated with the diversion channels 8 of the first cooling frame 1 and the second cooling frame 2; the shunt tube 31 is connected with a water inlet tube 35; the water outlet pipe 34 is connected with the collecting pipe 32 through a connecting pipe 33; cooling water or cold liquid enters the cooling plates 6 of the first cooling frame 1 and the second cooling frame 2 through the split pipes 31 from the water inlet pipes 35 and then is gathered to the collecting pipes 32, and is discharged through the connecting pipes 33 and the water outlet pipes 34 to complete a cold liquid circulation, and when the battery 5 is placed on the cooling plates 6, heat generated during discharging of the battery 5 can be taken away by circulation of the cold liquid.

Referring to fig. 3 and 4 again, the battery 5 is transversely erected on two cooling plates 6 at adjacent positions, at this time, the parts at two ends of the bottom plate of the battery 5 are in direct contact with the cooling plates 6 to obtain heat exchange, the middle part of the bottom plate of the battery 5 is not in contact with the cooling plates 6, a certain distance exists between the explosion-proof valve 51 positioned on the bottom plate of the battery 5 and the bottom plate of the housing 4, when the explosion-proof valve is exploded, high-heat energy air of the battery 5 is sprayed to the housing 4, and the high-heat energy air of the battery 5 can be timely discharged through a gap existing between the bottom plate of the battery 5 and the bottom plate of the housing 4, so that the larger loss caused by chain reaction in the battery pack is avoided.

Further, the number of the second cooling frames 2 may be increased or decreased according to the actual battery pack integration condition, for example, the number of the batteries is large, so that the number of the second cooling frames 2 may be increased, otherwise, for example, the number of the batteries is small, so that the number of the second cooling frames 2 may be reduced or the second cooling frames 2 may be omitted, and only two first cooling frames 1 disposed in opposite directions may be reserved.

Embodiment two: referring to fig. 5, in order to improve the heat exchange efficiency between the first cooling rack 1 and the second cooling rack 2 and the battery 5, a plurality of parallel flow guiding channels 8 are disposed in the separator 7 along the length direction thereof, the front ends of the flow guiding channels 8 in the separator 7 are connected with the flow dividing pipes 31, and the rear ends thereof are connected with the flow collecting pipes 32, so as to receive the cooling liquid, and the cooling liquid circulates in the separator 7, so that the heat of the side surfaces of the battery 5 can be taken away, and the heat exchange efficiency between the first cooling rack 1 and the second cooling rack 2 and the battery 5 can be further improved.

Furthermore, in order to realize the adjustable efficiency of heat exchange between the first cooling rack 1 and the second cooling rack 2 and the battery 5, a control valve (not shown in the figure) can be arranged between the diversion channel 8 of the baffle 7 and the diversion pipe 31, and the energy consumption can be saved by closing the valve under low power consumption; under high power consumption, opening the valve can improve battery package radiating efficiency and then improve battery package working property.

Through this technical scheme, through the cooling plate interval distribution setting with the cooling frame to erect the battery on two adjacent cooling plates, the at least partial non-contact cooling plate in battery bottom makes the cooling plate can not lead to the fact the blocking to the explosion-proof valve, has guaranteed that the explosion-proof valve can play a role under the inside temperature of battery and the too high condition of pressure, has improved the security of battery package.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a battery package of high integrated efficiency, includes circulating pipe assembly (3), battery (5), its characterized in that: the battery pack also comprises a cooling rack; the cooling rack has at least two cooling plates (6); the cooling plates (6) are arranged at intervals; the batteries (5) are erected on two adjacent cooling plates (6), and the bottom end surfaces of the batteries (5) are at least partially suspended; a diversion channel is arranged in the cooling plate (6) along the length direction of the cooling plate; the circulating pipe assembly (3) is provided with a water outlet pipe (34) and a water inlet pipe (35); one end of a diversion channel of the cooling plate (6) is connected with the water inlet pipe (35), and the other end is connected with the water outlet pipe (34).

2. The high integration efficiency battery pack of claim 1, wherein: the cooling rack also has a plurality of partitions (7); the partition plates (7) are arranged in one-to-one correspondence with the cooling plates (6), wherein the partition plates (7) are fixedly arranged at the upper ends of the cooling plates (6), and the main plane of the cooling plates (6) is perpendicular to the main plane of the partition plates (7).

3. The high integration efficiency battery pack of claim 2, wherein: a diversion channel is arranged in the partition board (7) along the length direction of the partition board; one end of the flow guide channel of the partition plate (7) is connected with the water inlet pipe (35), and the other end is connected with the water outlet pipe (34).

4. A high integration efficiency battery pack according to claim 3, wherein: a control valve is also arranged between the partition plate (7) and the water inlet pipe (35).

5. The high integration efficiency battery pack of claim 1, wherein: the length direction of two adjacent cooling plates (6) is the same.

6. The high integration-efficiency battery pack according to claim 1 or 2, wherein: the cooling rack is in an L-shaped structure or an inverted T-shaped structure.

7. The high integration efficiency battery pack of claim 1, wherein: the flow guide channels in the cooling plate (6) are provided with a plurality of flow guide channels.

8. A high integration efficiency battery pack according to claim 3, wherein: the flow guide channels of the partition plate (7) are provided with a plurality of flow guide channels.

9. The high integration efficiency battery pack of claim 1, wherein: the battery pack further comprises a housing (4); the housing (4) has a base plate; the cooling rack is arranged on the bottom plate.