Module-free power battery pack, vehicle power battery and vehicle

Abstract

The utility model provides a module-free power battery pack, a vehicle power battery and a vehicle, and relates to the technical field of power batteries, the module-free power battery pack is characterized in that a bottom plate of a box body is provided with a plurality of eruption channels and a plurality of tab avoiding grooves; the plurality of battery cells are inversely mounted on the bottom plate of the box body, the battery cell explosion-proof valve of each battery cell corresponds to one eruption channel, and each tab avoiding groove correspondingly accommodates a tab of one battery cell. The module-free power battery pack has the beneficial effects that a traditional square battery cell with a tab and an anti-explosion valve on the same side can also achieve the purpose of downward eruption, a vehicle power battery composed of the module-free power battery pack is adopted in a vehicle, eruption substances after thermal runaway of the battery cell are high-temperature conductors and erupt downwards, and the eruption efficiency is improved. High-temperature substances do not cause potential safety threats to passengers in the passenger compartment, the number of parts is reduced, the product weight is reduced, the product cost is reduced, eruption substances are directly sprayed out from the eruption channel when the battery cell is in thermal runaway and do not flow to the adjacent tab to cause short-circuit arc discharge of a tab busbar, and therefore intensified thermal diffusion is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery technical field especially relates to a moduleless power battery package, vehicle power battery and vehicle. BACKGROUND

[0002] The eruption material after thermal runaway of the lithium battery is a high-temperature conductor, if the eruption direction is upward, opposite to the passenger cabin, the high-temperature material can cause potential safety threat to the passenger, in addition, the conductive eruption material is easy to cause short circuit and arc of the adjacent electrode tab busbar, thereby aggravating heat diffusion, so downward eruption and thermal-electric separation become new design direction.In order to realize the two targets, usually the battery cell manufacturer will redevelop the battery cell, so that the electrode tab of the square battery cell and the safety valve are located in opposite directions, but the electrode tab and the safety valve of the traditional square battery cell are on the same side, so it is difficult to realize the target. SUMMARY

[0003] In view of the problems in the prior art, the utility model provides a moduleless power battery package, comprising:

[0004] The box bottom plate is provided with a plurality of eruption channels and a plurality of electrode tab avoiding grooves;

[0005] A plurality of battery cells are invertedly installed on the box bottom plate, the battery cell explosion-proof valve of each battery cell corresponds to an eruption channel, and each electrode tab avoiding groove accommodates the electrode tab of one battery cell.

[0006] Preferably, the electrode tab and the corresponding electrode tab avoiding groove are filled with heat-conducting glue.

[0007] Preferably, the box bottom plate is provided with a cooling liquid flow channel, and the cooling liquid flow channel stores cooling liquid.

[0008] Preferably, the battery cell is a square battery cell.

[0009] Preferably, the electrode tab and the battery cell explosion-proof valve of the battery cell are located on the same side of the battery cell.

[0010] The utility model also provides a vehicle power battery, which comprises the moduleless power battery package.

[0011] The utility model also provides a vehicle, which comprises the vehicle power battery, and the vehicle power battery is installed in the battery box of the vehicle.

[0012] Preferably, the eruption channel on the box bottom plate of the moduleless power battery package in the vehicle power battery faces away from the passenger cabin of the vehicle.

[0013] Preferably, the side beam of the battery box is fixedly connected with the bottom plate of the module-free power battery pack in the vehicle power battery, and an upper cover is fixed to the top of the battery box.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] 1. The bottom plate of the box is provided with a spewing channel and a tab avoiding groove, and the battery cell is installed upside down on the bottom plate of the box, so that the traditional tab and the explosion-proof valve are on the same side of the square battery cell, and the battery cell manufacturer can redevelop the battery cell to achieve the downward spewing goal, and the number of parts is reduced, the product weight is reduced, and the product cost is reduced.

[0016] 2. When the battery cell is in thermal runaway, the spewing material is directly spewed out from the spewing channel, and will not flow to the adjacent tab to cause the tab busbar short circuit and arc, thereby avoiding aggravating heat diffusion.

[0017] 3. In the vehicle, the vehicle power battery is composed of the module-free power battery pack, and the spewing material of the battery cell after thermal runaway is a high-temperature conductor spewed downward, and the high-temperature material will not cause potential safety threat to the passengers in the passenger compartment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 In a preferred embodiment of the present application, a structure diagram of a vehicle in which a module-free power battery pack is installed. DETAILED DESCRIPTION

[0019] The present application will be described in detail below with reference to the drawings and specific embodiments. The present application is not limited to this embodiment, and other embodiments can also belong to the scope of the present application as long as they comply with the main idea of the present application.

[0020] In a preferred embodiment of the present application, based on the above problems existing in the prior art, a module-free power battery pack is provided, as shown in the drawings, comprising: Figure 1

[0021] A box bottom plate 1 is provided with a plurality of spewing channels 11 and a plurality of tab avoiding grooves 12.

[0022] A plurality of battery cells 2 are installed upside down on the box bottom plate 1, the battery cell explosion-proof valve 21 of each battery cell 2 corresponds to a spewing channel 11, each tab avoiding groove 12 accommodates a tab 22 of a battery cell, the tab 22 of the battery cell and the battery cell explosion-proof valve 21 are located on the same side of the battery cell 2, and the battery cell 2 is a square battery cell.

[0023] ​Specifically, in the embodiment, the spewing channel 11 and the tab avoiding groove 12 are arranged on the box bottom plate 1 of the module-free power battery pack, and the battery cell 2 is installed upside down on the box bottom plate 1, so that the square battery cell with the traditional tab and the explosion-proof valve on the same side can also achieve the goal of downward spewing of the battery cell redeveloped by the battery cell manufacturer, and the number of parts is reduced, the product weight is reduced, and the product cost is reduced. And because the tab 22 is placed in the tab avoiding groove 12, the battery cell explosion-proof valve 21 is aligned with the spewing channel 11, and the spewing channel 11 is a rectangular strip-shaped channel penetrating through the box bottom plate 1, Figure 1 As shown in the cross-sectional view of the spewing channel 11, when the battery cell 2 is in thermal runaway, the spewing material is directly spewed from the battery cell explosion-proof valve 21 into the spewing channel 11, and will not flow to the adjacent tab 22 to cause the tab busbar short circuit and arc, thereby avoiding aggravating heat diffusion.

[0024] In the preferred embodiment of the utility model, as shown in Figure 1 The tab 22 and the corresponding tab avoiding groove 12 are filled with heat-conducting glue 3.

[0025] Specifically, in the embodiment, the tab 22 and the corresponding tab avoiding groove 12 are filled with heat-conducting glue 3, and the heat-conducting glue 3 can enhance the fixing effect of the battery cell installed on the box bottom plate after solidification, and the heat-conducting glue 3 can fill the gap of the tab avoiding groove 12 and wrap the tab, avoiding the spewing material flowing to the adjacent tab 22.

[0026] In the preferred embodiment of the utility model, as shown in Figure 1 The box bottom plate 1 is provided with a cooling liquid flow channel 13, and the cooling liquid flow channel 13 stores cooling liquid.

[0027] Specifically, the box bottom plate 1 in the embodiment is an integrated bottom plate, and the cooling liquid flow channel 13 is integrated, so that the heat generated by the battery cell 2 in the battery pack can be taken away by the flowing cooling liquid to dissipate heat and improve the safety of the battery pack, the number of parts is reduced, the product weight is reduced, the overall energy density is improved, and the product cost is reduced.

[0028] The utility model also provides a vehicle, as shown in Figure 1 The vehicle comprises a vehicle power battery composed of the module-free power battery pack, and the vehicle power battery is installed in a battery box of the vehicle, and the spewing channel 12 on the box bottom plate 1 of the module-free power battery pack in the vehicle power battery faces away from the passenger compartment of the vehicle.

[0029] Specifically, the vehicle in the embodiment adopts the module-free power battery pack in the foregoing embodiment, the orientation of the spewing channel is downward, and the spewing channel faces away from the passenger compartment of the vehicle, so that the high-temperature conductive body of the spewing material after thermal runaway of the lithium battery spews downward, and the high-temperature material will not pose a potential safety threat to the passengers.

[0030] Specifically, as shown inFigure 1 As shown, the side beam 4 of the battery box is fixedly connected with the bottom plate 1 of the module-free power battery pack in the vehicle power battery, and the top of the battery box is fixed with an upper cover 5, so that the installation stability of the vehicle power battery in the vehicle can be improved.

[0031] The above is only the preferred embodiment of the present application, and does not limit the implementation and protection scope of the present application. For those skilled in the art, it should be realized that any equivalent replacement and obvious change made according to the content of the present application and drawings should be included in the protection scope of the present application.

Claims

1. A module-free power battery pack, characterized in that, The application relates to a module-free power battery pack. The application relates to a vehicle power battery. The application relates to a vehicle power battery.

2. The modular free power battery pack of claim 1, wherein, The application relates to a vehicle power battery.

3. The modular free power battery pack of claim 1, wherein, The application relates to a vehicle power battery.

4. The modular free power battery pack of claim 1, wherein, The application relates to a vehicle power battery.

5. The modular free power battery pack of claim 1, wherein, The application relates to a vehicle power battery.

6. A traction battery for a vehicle, characterized in that The application relates to a vehicle power battery.

7. A vehicle characterized by comprising: The application relates to a vehicle power battery.

8. The vehicle of claim 7, wherein, ​ 9. The vehicle of claim 7, wherein, ​

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