Baffle plate of battery pack, battery pack and vehicle

Abstract

The utility model discloses a baffle plate of battery pack, battery pack and vehicle, the baffle plate of battery pack includes: main part, main part has first side and second side along its thickness, the first side is suitable for setting the battery cell, and the second side is suitable for setting the battery cell; the flow choking part is connected to the edge of the main body part; and the flow blocking part is used for blocking electrolyte flowing out of the anti-explosion valve of the battery cell on the first side from flowing to the second side. Therefore, the electrolyte flowing out of the anti-explosion valve of the battery cell on the first side can be prevented from flowing to the second side, so that the reliability and the safety of the battery cell can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a barrier plate of a battery pack, a battery pack and a vehicle. Background Art

[0002] In the prior art, for a battery pack with double-layer or multi-layer battery cells, a barrier plate may be provided between the double-layer or multi-layer battery cells. The edge of the barrier plate may be flush with the battery cells or retracted inward. After the explosion-proof valve of the upper battery cell is opened, the electrolyte may flow to the pole or connecting plate of the lower battery cell. In this way, a high-voltage short-circuit arc may occur at the connecting plate, causing the battery cell to catch fire. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a barrier plate of a battery pack, which can prevent the electrolyte flowing out of the explosion-proof valve of the battery cell on the first side from flowing to the second side, thereby improving the reliability and safety of the battery cell.

[0004] The utility model further provides a battery pack.

[0005] The utility model also provides a vehicle.

[0006] The barrier plate of the battery pack according to the embodiment of the first aspect of the utility model includes: a main body portion, the main body portion has a first side and a second side along its thickness, the first side is suitable for arranging a battery cell; a blocking portion, the blocking portion is connected to the edge of the main body portion; wherein the blocking portion is used to block the electrolyte flowing out of the explosion-proof valve of the battery cell on the first side from flowing to the second side.

[0007] Thus, the blocking plate can prevent the electrolyte flowing out of the explosion-proof valve of the battery cell on the first side from flowing to the second side, thereby improving the reliability and safety of the battery cell.

[0008] According to some embodiments of the utility model, the flow blocking portion includes: a blocking segment, which is connected to a side edge of the main body and is arranged parallel to the main body; and a bending segment, which is connected to a side edge of the blocking segment facing away from the main body, and the bending segment is bent from the blocking segment to the second side.

[0009] According to some embodiments of the present utility model, the angle between the shielding segment and the bending segment is α, and the angle α satisfies: 90°≤α≤100°.

[0010] According to some embodiments of the present invention, the width of the bending section is d1, the minimum bending edge size of the flow blocking portion after stamping and bending is d2, and d1 and d2 satisfy: d1≥d2.

[0011] According to some embodiments of the present utility model, the flow blocking portion further includes: an arc transition section, wherein the arc transition section is connected between the shielding section and the bending section.

[0012] According to some embodiments of the utility model, the baffle plate includes: a first layer plate, the first layer plate includes a first main body and a first baffle, the first baffle is connected to the edge of the first main body; a second layer plate, the second layer plate includes a second main body and a second baffle, the second baffle is connected to the edge of the second main body, the first main body is connected to the second main body and defines a cooling channel to constitute the main body, the first baffle is connected to the second baffle to constitute the baffle; the first baffle, a part of the second baffle, the first main body and the second main body are arranged parallel to each other, the first baffle is located above a part of the second baffle; the part of the second baffle is connected to the first baffle to jointly constitute the shielding section, and the other part of the second baffle is bent toward the second side to constitute the bending section.

[0013] According to some embodiments of the present invention, the flow blocking portion is connected to at least one side edge of the main body in the width direction.

[0014] According to some embodiments of the present invention, the end of the blocking portion in the length direction is flush with the end of the main body in the length direction.

[0015] According to some embodiments of the present invention, the baffle plate is configured as a cooling plate.

[0016] According to some embodiments of the present invention, the first side is located above the main body, and the second side is located below the main body.

[0017] According to some embodiments of the present invention, in a plane parallel to the main body, an orthographic projection of the explosion-proof valve of the battery cell located on the first side is located within an orthographic projection of the blocking portion.

[0018] According to the second aspect of the present invention, the battery pack includes: a plurality of battery cells and the above-mentioned barrier plate for the battery pack, and the main body is located between two adjacent battery cells.

[0019] According to some embodiments of the present invention, the thickness direction of the main body is a vertical direction, and the main body is located between the battery cells of two adjacent layers.

[0020] According to some embodiments of the utility model, a pole and a high-voltage connector are provided at the end of the battery cell, and the high-voltage connector is connected to the pole; in a plane parallel to the main body, the orthographic projection of the pole and / or the high-voltage connector of the battery cell located on the second side is located within the orthographic projection of the blocking portion, and the blocking portion is used to block the electrolyte flowing out of the explosion-proof valve of the battery cell on the first side from flowing to the pole and / or the high-voltage connector of the battery cell on the second side.

[0021] According to some embodiments of the present invention, in a plane parallel to the main body, the orthographic projection of the blocking portion exceeds the orthographic projection of the pole and / or the high-voltage connector of the battery cell located on the second side, and the excess dimension is not less than 5 mm.

[0022] A vehicle according to an embodiment of the third aspect of the utility model includes: the above-mentioned battery pack.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic structural diagram of a baffle plate according to an embodiment of the utility model;

[0026] Figure 2 yes Figure 1 Enlarged view of area A in the middle;

[0027] Figure 3 This is a schematic diagram of the structure of the baffle plate in the length direction of the battery cell according to an embodiment of the utility model;

[0028] Figure 4 yes Figure 3 Enlarged view of middle area B;

[0029] Figure 5 It is a schematic diagram of the structure of the battery cell including an explosion-proof valve and a high-voltage connector according to an embodiment of the utility model;

[0030] Figure 6 It is a schematic diagram of the structure of a barrier plate between an upper battery cell and a lower battery cell according to an embodiment of the utility model.

[0031] Reference numerals:

[0032] 100. Barrier plate;

[0033] 10. Main body; 11. First side; 12. Second side;

[0034] 20. flow blocking portion; 21. shielding section; 22. bending section; 23. arc transition section;

[0035] 30. Explosion-proof valve;

[0036] 40. High-voltage connectors;

[0037] 60. first layer plate; 61. first main body; 62. first flow blocking part;

[0038] 70. second layer plate; 71. second main body; 72. second flow blocking portion;

[0039] 80. Battery cell; 90. Pallet. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0041] Reference below Figure 1-Figure 6 A barrier plate of a battery pack according to an embodiment of the present invention is described.

[0042] like Figure 1-Figure 3 As shown, a barrier plate 100 for a battery pack according to an embodiment of the first aspect of the utility model comprises: a main body 10 and a blocking portion 20, the main body 10 having a first side 11 and a second side 12 along its thickness, the first side 11 being suitable for arranging a battery cell 80, the blocking portion 20 being connected to an edge of the main body 10, wherein the blocking portion 20 is used to block the electrolyte flowing out of the explosion-proof valve 30 of the battery cell on the first side 11 from flowing toward the second side 12.

[0043] Specifically, the edge of the traditional barrier plate is flush with the edge of the battery cell or retracted. After the explosion-proof valve of the upper battery cell is opened, the electrolyte flowing out of the explosion-proof valve will flow to the pole or connecting piece of the lower battery cell because there is no shielding between the upper and lower battery cells. In this way, the battery cell will have a high-voltage short circuit arc, causing a fire.

[0044] Therefore, the baffle plate 100 of the design is mainly composed of a main body 10 and a flow blocking portion 20, wherein Figure 3In the embodiment shown, the front-to-back direction is the width direction of the baffle plate 100, the left-to-right direction is the length direction of the baffle plate 100, and the baffle 20 is connected to the edge of the main body 10. The baffle 20 can be used to shield the electrolyte. Among them, the first side 11 is located above the baffle plate 100, and the second side 12 is located below the baffle plate 100. The orthographic projection of the explosion-proof valve 30 of the battery cell located on the first side 11 is located within the orthographic projection of the baffle 20. The orthographic projection is a projection line that is parallel to and perpendicular to the plane of the baffle plate 100, and the projection direction is the up-down direction. In this way, the baffle 20 is arranged beyond the explosion-proof valve 30. When the electrolyte flowing out of the explosion-proof valve 30 flows to the baffle 20, the baffle 20 can temporarily block the electrolyte and prevent the electrolyte from flowing in other directions, thereby preventing the electrolyte flowing out of the explosion-proof valve 30 of the battery cell 80 located on the first side 11 from flowing to the second side 12, and also improving the reliability and safety of the battery cell 80.

[0045] Thus, the blocking plate 100 can prevent the electrolyte flowing out of the explosion-proof valve 30 of the battery cell 80 located on the first side 11 from flowing to the second side 12 , thereby improving the reliability and safety of the battery cell 80 .

[0046] According to some embodiments of the present invention, Figure 4 As shown, the blocking portion 20 includes: a blocking segment 21 and a bending segment 22, the blocking segment 21 is connected to one side edge of the main body 10, and the blocking segment 21 is arranged parallel to the main body 10, the bending segment 22 is connected to one side edge of the blocking segment 21 facing away from the main body 10, and the bending segment 22 is bent from the blocking segment 21 to the second side 12.

[0047] The shielding segment 21 is arranged parallel to the main body 10, which can be understood as the thickness direction of the shielding segment 21 is parallel to the thickness direction of the main body 10, and the surface of the shielding segment 21 perpendicular to the thickness direction is parallel to the surface of the main body 10 perpendicular to the thickness direction. The shielding segment 21 extends outward, so that the shielding segment 21 can be away from the pole and high-voltage connector 40 of the battery cell located on the second side 12, so that the electrolyte flowing out of the explosion-proof valve 30 of the battery cell located on the first side 11 will be guided away from the pole and high-voltage connector 40 of the battery cell located on the second side 12 by the shielding segment 21, thereby preventing the pole and high-voltage connector 40 of the battery cell located on the second side 12 from short circuit.

[0048] Furthermore, the bending section 22 is bent toward the second side 12. When the electrolyte at the shielding section 21 flows toward the bending section 22, the bending section 22 can guide the electrolyte to flow downward, thereby preventing the electrolyte from splashing, thereby achieving the effect of protecting the high-voltage connector 40 of the battery cell located on the second side 12.

[0049] According to the specific embodiment of the utility model, Figure 4As shown, the included angle between the shielding segment 21 and the bending segment 22 is α, and the included angle α satisfies: 90°≤α≤100°.

[0050] Specifically, the angle formed by the shielding segment 21 and the bending segment 22 is in the range of 90° to 100°. If the angle is set to be less than 90°, the electrolyte in the shielding segment 21 will flow through the bending segment 22 to the lower area of ​​the high-voltage connector 40 of the battery cell located on the second side 12. When the angle is set to be greater than 100°, the guiding effect of the bending segment 22 will be reduced, which may easily cause the electrolyte to splash. Therefore, the angle formed by the shielding segment 21 and the bending segment 22 is set in the range of 90° to 100°, so as to improve the safety and reliability of the battery cell 80.

[0051] According to some embodiments of the present invention, the width of the bending section 22 is d1, the minimum bending edge size of the flow blocking portion 20 after stamping and bending is d2, and d1 and d2 satisfy: d1≥d2.

[0052] Among them, the width d1 of the bending section 22, that is, the dimension of the bending section 22 extending downward, and the minimum bending edge dimension d2 of the blocking portion 20 by stamping and bending are in the range of 4mm to 6mm. Therefore, the width d1 of the bending section 22 can be set to 6mm, 7mm, etc., so that the bending section 22 can prevent the electrolyte from flowing to the high-voltage connector 40.

[0053] According to some embodiments of the present invention, Figure 4 As shown, the flow blocking portion 20 further includes: an arc transition section 23 , and the arc transition section 23 is connected between the shielding section 21 and the bending section 22 .

[0054] The provision of the arc transition section 23 can prevent the electrolyte at the shielding section 21 from flowing quickly to the bending section 22, thereby avoiding splashing of the electrolyte. Moreover, since stress concentration is prone to occur at the connection between the shielding section 21 and the bending section 22, the arc transition section 23 is provided at the connection between the shielding section 21 and the bending section 22, which can reduce the stress at the connection between the shielding section 21 and the bending section 22, thereby preventing the bending section 22 from deformation or fracture.

[0055] According to the specific embodiment of the utility model, Figure 4As shown, the baffle plate 100 includes: a first layer plate 60 and a second layer plate 70, the first layer plate 60 includes a first main body portion 61 and a first baffle portion 62, the first baffle portion 62 is connected to the edge of the first main body portion 61, the second layer plate 70 includes a second main body portion 71 and a second baffle portion 72, the second baffle portion 72 is connected to the edge of the second main body portion 71, the first main body portion 61 is connected to the second main body portion 71, and the first main body portion 61 and the second main body portion 71 define a cooling flow channel, thereby forming a main body portion 10, the first baffle portion 62 is connected to the second baffle portion 72, thereby forming a baffle portion 20, the first baffle portion 62, a part of the second baffle portion 72, the first main body portion 61 and the second main body portion 71 are arranged parallel to each other, a part of the second baffle portion 72 is connected to the first baffle portion 62 to form a shielding section 21 together, and another part of the second baffle portion 72 is bent toward the second side 12 to form a bending section 22.

[0056] Specifically, the baffle plate 100 is mainly composed of a first layer plate 60 and a second layer plate 70. The first layer plate 60 composed of a first main body 61 and a first flow blocking part 62 and the second layer plate 70 composed of a second main body 71 and a second flow blocking part 72 can cooperate to strengthen the strength of the baffle plate 100, and can also make the first flow blocking part 62 and the second flow blocking part 72 play a role in strengthening the strength of the flow blocking part 20.

[0057] Furthermore, the first main body portion 61 and the second main body portion 71 define a cooling channel, and the cooling channel is arranged in a multi-circle manner on the main body portion 10, wherein the main body portion is also provided with a liquid inlet channel and a liquid outlet channel, and the cooling liquid enters through the liquid inlet channel, and then the cooling liquid passes through the multi-circle cooling channel. In this way, the cooling area of ​​the baffle plate 100 can be increased, so that the baffle plate 100 can be cooled to achieve a good cooling effect.

[0058] In addition, a portion of the second blocking portion 72 and the first blocking portion 62 can enhance the strength of the shielding section 21 , thereby ensuring the strength of the blocking portion 20 and increasing the service life of the blocking plate 100 .

[0059] According to some embodiments of the present invention, Figure 5 As shown, the blocking portion 20 is arranged corresponding to the battery core explosion-proof valve 30 and the high-voltage connector 40 , and is connected to at least one side edge of the main body 10 in the width direction.

[0060] Among them, the blocking part 20 is arranged corresponding to the high-voltage connector 40 on the battery cell 80. When the high-voltage connector 40 is only arranged on one side of the battery cell 80, the blocking part 20 is connected to one side of the width direction of the main body 10. When the high-voltage connector 40 is arranged on both sides of the battery cell 80, the blocking part 20 is respectively arranged on both sides of the width direction of the main body 10. In this way, the electrolyte flowing out of the explosion-proof valve 30 of the battery cell located on the first side 11 can be prevented from flowing into the high-voltage connector 40 of the battery cell located on the second side 12.

[0061] According to some embodiments of the present invention, Figure 4 As shown, the end of the blocking portion 20 in the length direction is flush with the end of the main body 10 in the length direction, so that the accumulation of electrolyte can be avoided, thereby ensuring the safety of the battery cell 80.

[0062] According to some embodiments of the present invention, the baffle plate 100 is configured as a cooling plate, so that the baffle plate 100 can facilitate cooling of the battery cell 80 .

[0063] According to some embodiments of the present invention, Figure 3 As shown, the first side 11 is located above the main body 10 , and the second side 12 is located below the main body 10 .

[0064] The main body 10 separates the battery cells on the first side 11 from the battery cells on the second side 12 , thereby preventing a short circuit from occurring between the battery cells on the first side 11 and the battery cells on the second side 12 .

[0065] According to some embodiments of the present invention, Figure 3 and Figure 5 As shown, in a plane parallel to the main body 10 , the orthographic projection of the explosion-proof valve 30 of the battery cell located at the first side 11 is located within the orthographic projection of the blocking portion 20 .

[0066] Among them, since the orthographic projection of the explosion-proof valve 30 of the battery cell located on the first side 11 is located within the orthographic projection of the blocking portion 20, the electrolyte flowing out of the explosion-proof valve 30 of the battery cell located on the first side 11 will be blocked by the blocking portion 20, so that the electrolyte flowing out of the explosion-proof valve 30 will not flow to the pole of the battery cell located on the second side 12 or the high-voltage connector 40.

[0067] like Figure 5 As shown, the battery pack according to the embodiment of the second aspect of the utility model includes: a plurality of battery cells 80 and the above-mentioned barrier plate 100 for the battery pack, and the main body 10 is located between two adjacent battery cells 80 .

[0068] According to some embodiments of the present invention, Figure 5 As shown, the thickness direction of the main body 10 is the vertical direction, and the main body 10 is located between two adjacent layers of battery cells 80 .

[0069] Specifically, the blocking plate 100 can be a cooling plate, and the main body 10 of each cooling plate is respectively located between two adjacent layers of battery cells 80. The cooling plate can cool the upper battery cells and the lower battery cells, and can achieve a good heat dissipation effect. By providing a flow blocking portion 20 on each cooling plate, the electrolyte flowing out of the explosion-proof valve 30 of the upper battery cell can be prevented from flowing to the high-voltage connector 40 of the adjacent lower battery cell, so that a high-voltage short-circuit arc can be avoided, which can cause a fire.

[0070] Furthermore, the multi-layer battery cells 80 are arranged on the tray 90, and the tray 90 can support the battery cells 80. The electrolyte flowing out of the explosion-proof valve 30 of the upper battery cell first reaches the shielding section 21, and the shielding section 21 can shield the electrolyte. The shielding section 21 can prevent the electrolyte from continuing to flow downward, so that the shielding section 21 can temporarily store the electrolyte. When the electrolyte on the shielding section 21 accumulates to a certain amount, the electrolyte on the shielding section 21 passes through the arc transition section 23 to the bending section 22. The bending section 22 can change the flow direction of the electrolyte, so that the electrolyte can flow away from the high-voltage connector of the lower battery cell to the tray.

[0071] Furthermore, in some embodiments, the tray 90 may also cool and dissipate heat for the battery cells 80 .

[0072] According to some embodiments of the present invention, Figure 3 and Figure 4 As shown, a pole and a high-voltage connector 40 are provided at the end of the battery cell 80, and the high-voltage connector 40 connects the pole. In a plane parallel to the main body 10, the positive projection of the pole and / or the high-voltage connector 40 of the battery cell 80 located on the second side 12 is located within the positive projection of the blocking portion 20. The blocking portion 20 is used to block the electrolyte flowing out of the explosion-proof valve 30 of the battery cell 80 on the first side 11 from flowing to the pole and / or the high-voltage connector 40 of the battery cell 80 on the second side 12. The first side 11 is located above the main body 10, and the second side 12 is located below the main body 10.

[0073] Among them, since the orthographic projection of the high-voltage connector 40 of the battery cell located on the second side 12 in a plane parallel to the main body 10 is included in the orthographic projection range of the blocking portion 20 in a plane parallel to the main body 10. Therefore, the blocking portion 20 is arranged beyond the high-voltage connector 40, and the high-voltage connector 40 is located below the blocking portion 20. The blocking portion 20 can shield the high-voltage connector 40, and play a certain protective role for the high-voltage connector 40. In this way, the electrolyte flowing out of the explosion-proof valve 30 of the battery cell located on the first side 11 will be blocked by the blocking portion 20, and the electrolyte flowing out of the explosion-proof valve 30 will not flow to the high-voltage connector 40 of the battery cell located on the second side 12, thereby avoiding the occurrence of high-voltage short-circuit arcing at the high-voltage connector 40, causing fire.

[0074] According to the specific embodiment of the utility model, Figure 3 As shown, in a plane parallel to the main body 10, the orthographic projection of the blocking portion 20 exceeds the orthographic projection of the pole of the battery cell 80 and / or the high-voltage connector 40 located on the second side 12, and the orthographic projection of the blocking portion 20 exceeds the size by not less than 5 mm.

[0075] Specifically, the outer edge of the blocking portion 20 exceeds the pole and / or the high-voltage connector 40 of the battery cell located on the second side 12, and the outer edge of the blocking portion 20 exceeds the high-voltage connector 40 by at least 5 mm in the length direction of the battery cell 80, which can prevent the electrolyte flowing out of the explosion-proof valve 30 of the battery cell located on the first side 11 from flowing to the pole and / or the high-voltage connector 40 of the battery cell located on the second side 12. In this way, the safety of the battery cell 80 located on the second side 12 can be guaranteed.

[0076] A vehicle according to an embodiment of the third aspect of the utility model includes: a battery pack of the above embodiment.

[0077] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0079] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A barrier plate for a battery pack, characterized in that: include: A main body portion, wherein the main body portion has a first side and a second side along a thickness thereof, wherein the first side is suitable for arranging a battery cell; A flow blocking portion, the flow blocking portion being connected to an edge of the main body; The blocking portion is used to block the electrolyte flowing out of the explosion-proof valve of the battery cell on the first side from flowing toward the second side.

2. The barrier plate for a battery pack according to claim 1, characterized in that: The blocking portion comprises: A shielding section, the shielding section is connected to a side edge of the main body and is arranged parallel to the main body; A bending section, wherein the bending section is connected to an edge of a side of the shielding section facing away from the main body, and the bending section is bent from the shielding section to the second side.

3. The barrier plate for a battery pack according to claim 2, characterized in that: The included angle between the shielding section and the bending section is α, and the included angle α satisfies: 90°≤α≤100°.

4. The barrier plate for a battery pack according to claim 3, characterized in that: The width of the bending section is d1, the minimum bending edge size of the flow blocking portion after stamping and bending is d2, and d1 and d2 satisfy: d1≥d2.

5. The barrier plate for a battery pack according to claim 2, characterized in that: The blocking portion further comprises: An arc transition section, wherein the arc transition section is connected between the shielding section and the bending section.

6. The barrier plate for a battery pack according to claim 2, characterized in that: The baffle plate comprises: A first layer plate, the first layer plate comprising a first main body portion and a first flow blocking portion, the first flow blocking portion being connected to an edge of the first main body portion; A second layer plate, the second layer plate comprises a second main body and a second flow blocking portion, the second flow blocking portion is connected to an edge of the second main body, the first main body is connected to the second main body and defines a cooling channel to form the main body, and the first flow blocking portion is connected to the second flow blocking portion to form the flow blocking portion; The first flow blocking portion, a portion of the second flow blocking portion, the first main body portion and the second main body portion are arranged parallel to each other, and the first flow blocking portion is located above a portion of the second flow blocking portion; A portion of the second flow blocking portion is connected to the first flow blocking portion to jointly form the shielding section, and another portion of the second flow blocking portion is bent toward the second side to form the bent section.

7. The barrier plate for a battery pack according to claim 1, characterized in that: The flow blocking portion is connected to at least one side edge of the main body portion in a width direction.

8. The barrier plate for a battery pack according to claim 7, characterized in that: The end of the blocking portion in the length direction is flush with the end of the main body in the length direction.

9. The barrier plate for a battery pack according to claim 1, characterized in that: The baffle plate is configured as a cooling plate.

10. The barrier plate for a battery pack according to any one of claims 1 to 9, characterized in that: The first side is located above the main body, and the second side is located below the main body.

11. The barrier plate for a battery pack according to any one of claims 1 to 9, characterized in that: In a plane parallel to the main body, an orthographic projection of the explosion-proof valve of the battery cell located on the first side is located within an orthographic projection of the blocking portion.

12. A battery pack, characterized in that: include: A barrier plate for a battery pack according to any one of claims 1 to 11 and a plurality of battery cells, wherein the main body is located between two adjacent battery cells.

13. The battery pack according to claim 12, characterized in that: The thickness direction of the main body is the vertical direction, and the main body is located between the battery cells of two adjacent layers.

14. The battery pack according to claim 12 or 13, characterized in that: The ends of the battery cell are provided with poles and high-voltage connectors, and the high-voltage connectors are connected to the poles; in a plane parallel to the main body, the orthographic projection of the poles and / or the high-voltage connectors of the battery cell located on the second side is located within the orthographic projection of the blocking portion, and the blocking portion is used to block the electrolyte flowing out of the explosion-proof valve of the battery cell on the first side from flowing to the poles and / or the high-voltage connectors of the battery cell on the second side.

15. The battery pack according to claim 14, characterized in that: In a plane parallel to the main body, the orthographic projection of the blocking portion exceeds the orthographic projection of the pole and / or the high-voltage connector of the battery cell located on the second side, and the excess dimension is not less than 5 mm.

16. A vehicle, characterized in that: include: A battery pack as claimed in any one of claims 12 to 15.

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