Battery pack and vehicle

Abstract

The utility model discloses a battery pack and vehicle, including temperature adjusting plate, guard plate and support member, the temperature adjusting plate is equipped with the flow channel for temperature adjusting medium circulation, the guard plate and the temperature adjusting plate are arranged at interval along the first direction, the support member is arranged between the temperature adjusting plate and the guard plate, and the temperature adjusting medium is arranged in the flow channel. The supporting piece comprises a supporting part used for abutting against the temperature adjusting plate, and the connecting position of the supporting part and the temperature adjusting plate and the flow channel are arranged in a staggered mode. According to the battery pack disclosed by the utility model, the condition that the exhaust channel and the runner of the temperature adjusting plate are greatly deformed when being collided by foreign matters can be improved, so that the cooling and heat dissipation performance is ensured, the exhaust smoothness during thermal runaway is also ensured, and the use safety of the battery pack is improved.

Description

Technical Field

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

[0002] As the power source of new energy vehicles, the performance of power batteries directly determines the performance of the whole vehicle. At present, a temperature regulating plate and a protection plate are usually arranged at the bottom of the battery pack, and an exhaust passage is arranged between the temperature regulating plate and the protection plate. When the protection plate is subjected to an external force, it is easy to deform and contact the temperature regulating plate, resulting in the deformation or even rupture of the flow channel of the temperature regulating plate, affecting the heat dissipation of the battery pack. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to a certain extent.

[0004] To this end, an embodiment of the utility model provides a battery pack, which can improve the situation that the flow channel of the temperature regulating plate is greatly deformed when being collided by foreign objects, thereby ensuring the cooling and heat dissipation performance.

[0005] An embodiment of the utility model further provides a vehicle including the above battery pack.

[0006] The battery pack according to the embodiment of the utility model includes:

[0007] A temperature regulating plate and a protection plate, wherein a flow channel for a temperature regulating medium to flow through is arranged in the temperature regulating plate, and the protection plate is arranged at an interval from the temperature regulating plate in a first direction;

[0008] A support member, which is arranged between the temperature regulating plate and the protection plate. The support member includes a support portion for abutting against the temperature regulating plate, and the connection portion of the support portion and the temperature regulating plate is arranged in a dislocation manner with respect to the flow channel.

[0009] In some embodiments, the support member includes a first surface and a second surface which are oppositely arranged in the first direction. The first surface is in close contact with the temperature regulating plate, the second surface is in close contact with the protection plate, and the width dimension of the first surface in a second direction is smaller than the width dimension of the second surface in the second direction, and the second direction is perpendicular to the first direction.

[0010] In some embodiments, the width dimension of at least a part of the support member in the second direction gradually increases along the direction from the first surface to the second surface.

[0011] In some embodiments, the support member further includes:

[0012] A plate portion, the plate portion and the support portion are arranged opposite to each other in the first direction, the first surface is provided on the support portion, the second surface is provided on the plate portion, and the width dimension of the plate portion in the second direction is greater than the width dimension of the support portion in the second direction;

[0013] A connecting portion, the connecting portion is connected between the plate portion and the support portion, and the width dimension of the connecting portion in the second direction gradually increases from the direction of the first surface to the second surface.

[0014] In some embodiments, the upper limit value of the width dimension of the connecting portion in the second direction is less than the width dimension of the plate portion in the second direction;

[0015] And / or, the lower limit value of the width dimension of the connecting portion in the second direction is the same as the width dimension of the support portion in the second direction.

[0016] In some embodiments, the two side walls of the connecting portion arranged opposite to each other in the second direction are inclined surfaces or curved surfaces.

[0017] In some embodiments, the support member is adhesively connected to the temperature control plate through a first adhesive, and the support member is adhesively connected to the protection plate through a second adhesive, and the adhesive strength of the first adhesive is greater than the adhesive strength of the second adhesive.

[0018] In some embodiments, the adhesive strength of the second adhesive is 2 Mpa to 3 Mpa.

[0019] In some embodiments, the material of the support member is polyurethane or aluminum.

[0020] In some embodiments, the temperature control plate is provided with a groove, the groove and the flow channel are arranged at intervals in the second direction, and part of the support member is arranged in the groove.

[0021] In some embodiments, the temperature control plate includes a flat plate and a flow channel plate arranged opposite to each other in the first direction, the flow channel plate is located between the flat plate and the support member, the flow channel is arranged between the flat plate and the flow channel plate, and the groove is arranged on the side of the flow channel plate facing the support member.

[0022] In some embodiments, the battery pack includes a buffer member, there are a plurality of the support members, the plurality of support members are arranged at intervals, the buffer member is located between the temperature control plate and the protection plate, and the buffer member is arranged between two adjacent support members.

[0023] In some embodiments, the support member includes a plurality of the support portions, the plurality of support portions are arranged at intervals along a second direction perpendicular to the first direction, the temperature regulating plate is provided with a plurality of the flow channels, and the plurality of support portions and the plurality of flow channels are alternately arranged and connected in the second direction.

[0024] In some embodiments, the support portion and the temperature regulating plate are arranged at intervals in the first direction and form an interval cavity.

[0025] In some embodiments, the support member is provided with a plurality of limiting grooves, the plurality of limiting grooves and the plurality of support portions are alternately arranged in the second direction, the temperature regulating plate is provided with a plurality of protruding portions, the plurality of protruding portions are respectively arranged in the plurality of limiting grooves, and each of the protruding portions is provided with the flow channel.

[0026] In some embodiments, the protruding portion and the support member are arranged at intervals in the first direction and form an interval cavity.

[0027] In some embodiments, it includes a plurality of single cells, the temperature regulating plate is arranged between the plurality of single cells and the protection plate, the temperature regulating plate is provided with a plurality of pressure relief holes, the plurality of pressure relief holes are respectively arranged opposite to the explosion-proof valves of the plurality of single cells, and the interval space between the temperature regulating plate and the protection plate is connected to the plurality of pressure relief holes and is used for collecting the gas discharged during thermal runaway of the single cells.

[0028] In some embodiments, the cross-section of the support member is Z-shaped.

[0029] The vehicle according to the embodiment of the present invention includes the battery pack as described in any one of the above embodiments.

[0030] Beneficial effects: For the battery pack and the vehicle according to the embodiment of the present invention, the battery pack can improve the situation that the flow channels of the temperature regulating plate are greatly deformed when being collided by foreign objects, thereby ensuring the cooling and heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is an exploded schematic view of the temperature regulating plate, the protection plate and the support member according to the embodiment of the present invention.

[0032] Figure 2 is a top view schematic diagram of the battery pack according to the embodiment of the present invention.

[0033] Figure 3 is Figure 2 the sectional view and partial enlarged schematic view at A-A in

[0034] Figure 4 is an end view schematic diagram of the support member according to the embodiment of the present invention.

[0035] Figure 5 is Figure 4 The three-dimensional schematic diagram of the middle support member.

[0036] Figure 6 is the end face schematic diagram of the support member of another embodiment of the present utility model.

[0037] Figure 7 is Figure 6 The three-dimensional schematic diagram of the middle support member.

[0038] Figure 8 is the layout schematic diagram of the support member and the buffer member of the embodiment of the present utility model.

[0039] Figure 9 is the explosion schematic diagram of the battery pack of the embodiment of the present utility model.

[0040] Figure 10 is the schematic diagram of the assembly process of the battery pack of the embodiment of the present utility model.

[0041] Figure 11 is the partial structure explosion schematic diagram of the battery pack of another embodiment of the present utility model.

[0042] Figure 12 is Figure 11 The top view schematic diagram of the middle battery pack.

[0043] Figure 13 is Figure 12 The sectional view and partial enlarged schematic diagram at B-B in the middle.

[0044] Figure 14 is the three-dimensional schematic diagram of the support member of yet another embodiment of the present utility model.

[0045] Figure 15 is Figure 14 The side view schematic diagram of the middle support member.

[0046] Reference numerals:

[0047] 1 - Temperature regulating plate; 11 - Flow channel; 12 - Flat plate; 13 - Flow channel plate; 14 - Groove; 15 - Protruding portion; 16 - Pressure relief hole;

[0048] 2 - Protective plate;

[0049] 3 - Support member; 31 - First face; 32 - Second face; 33 - Plate portion; 34 - Support portion; 35 - Connection portion; 351 - Side wall; 36 - Spacing cavity; 37 - Limiting groove;

[0050] 4 - Exhaust passage;

[0051] 5 - Cover body;

[0052] 6 - Housing;

[0053] 7 - Battery assembly;

[0054] 8 - Buffer;

[0055] 9 - Potting medium;

[0056] 10 - Structural adhesive. Detailed implementation manners

[0057] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0058] As Figure 1 shown, the battery pack of the embodiment of the present utility model includes a temperature regulating plate 1, a protective plate 2 and a support member 3.

[0059] A flow channel 11 for the flow of a temperature regulating medium is provided in the temperature regulating plate 1. For example, as Figure 1 shown, the temperature regulating plate 1 can generally be in the shape of a rectangular plate, the flow channel 11 is provided in the temperature regulating plate 1, and the flow channel 11 can bend and extend reciprocally in the temperature regulating plate 1. During use, a temperature regulating medium such as water can be introduced into the flow channel 11, and the temperature regulating medium can achieve heat exchange with the battery assembly 7, so as to achieve the function of regulating the operating temperature of the battery assembly 7.

[0060] The protective plate 2 and the temperature regulating plate 1 are arranged at intervals in a first direction. For example, as Figure 1 shown, the first direction can be the up - down direction, and the protective plate 2 can also be in the shape of a rectangular plate. The protective plate 2 can be arranged below the temperature regulating plate 1 and is arranged opposite to the temperature regulating plate 1. The support member 3 is arranged between the temperature regulating plate 1 and the protective plate 2. For example, as Figures 1 to 3 shown, there can be a plurality of support members 3, and the plurality of support members 3 can be evenly distributed between the temperature regulating plate 1 and the protective plate 2. The top end of each support member 3 can be connected to the temperature regulating plate 1, and the bottom end of each support member 3 can be connected to the protective plate 2.

[0061] The support member 3 is arranged between the temperature regulating plate and the protective plate. The support member 3 includes a support portion 34 for abutting against the temperature regulating plate 1, and the support portion 34 is arranged in a dislocation manner with respect to the flow channel 11. For example, as Figure 4 shown, the support portion 34 can be integrally formed at the top of the support member 1, and the support portion 34 can be the part of the support member 3 directly used for connecting or abutting against the temperature regulating plate 1.

[0062] As Figure 3As shown, the support member 3 and the flow channel 11 can be arranged at intervals in the second direction. Thus, the impact force on the guard plate 2 will be directly transmitted to the support portion 34 of the support member 3. Since the staggered arrangement of the support portion 34 and the flow channel 11 can avoid the situation where the acting force directly acts on the flow channel 11, the problem of flattening the flow channel 11 during impact is avoided, ensuring that the flow channel 11 always has good fluidity.

[0063] In the battery pack according to the embodiment of the present invention, the space between the temperature regulating plate 1 and the guard plate 2 can be used to collect the gas discharged during the thermal runaway of the single battery. At this time, the support member 3 can play a role in separating and supporting the temperature regulating plate 1 and the guard plate 2, thus avoiding the situation where the exhaust passage 4 is excessively squeezed and deformed, ensuring that the exhaust passage 4 always has good fluidity, and further ensuring good exhaust guiding effect during thermal runaway, improving the safety of using the battery pack.

[0064] Secondly, due to the staggered arrangement of the support member 3 and the flow channel 11, the acting force received by the support member 3 will not be directly transmitted to the flow channel 11, thus avoiding the problem of excessive extrusion and deformation of the flow channel 11 under the impact force, ensuring that the flow channel 11 always has good fluidity, and further ensuring the cooling effect on the battery pack.

[0065] In some embodiments, an exhaust passage 4 is defined between the temperature regulating plate 1 and the guard plate 2. A certain interval space can be reserved between the temperature regulating plate 1 and the guard plate 2, such as Figure 2 and Figure 3 As shown, this interval space is the exhaust passage 4. When a single battery in the battery assembly 7 experiences thermal runaway, the rapid exhaust function can be realized through the exhaust passage 4, thereby suppressing the rapid spread of thermal runaway.

[0066] When driving or during the bottom ball test, foreign objects will directly impact the guard plate 2. At this time, the support member 3 can support between the temperature regulating plate 1 and the guard plate 2, thus avoiding the situation where the guard plate 2 undergoes large deformation and causes the exhaust passage 4 to be blocked or blocked, and can relieve the compression amount of the exhaust passage 4 when being impacted, ensuring that the exhaust passage 4 always has good exhaust smoothness.

[0067] In some embodiments, the support member 3 includes a first surface 31 and a second surface 32 arranged opposite to each other in the first direction. The first surface 31 is in contact with the temperature regulating plate 1, the second surface 32 is in contact with the guard plate 2, and the width dimension of the first surface 31 in the second direction is smaller than the width dimension of the second surface 32 in the second direction, and the second direction is perpendicular to the first direction.

[0068] For example, as Figures 4 to 7As shown, the first direction can be the up-down direction, and both the first surface 31 and the second surface 32 can be flat surfaces. Among them, the first surface 31 can be the upper surface of the support member 3, and the second surface 32 can be the lower surface of the support member 3. The first surface 31 can be directly attached to and connected with the lower surface of the temperature regulating plate 1, while the second surface 32 can be attached to and connected with the upper surface of the protection plate 2.

[0069] The second direction can be the left-right direction. As Figure 4 shown, the width dimension of the first surface 31 in the left-right direction can be dimension L1, and the width dimension of the second surface 32 in the left-right direction can be dimension L2. Dimension L2 is much larger than dimension L1.

[0070] Restricted by the spacing between two adjacent flow channels 11, the smaller width dimension of the first surface 31 can facilitate the offset arrangement with the flow channels 11, while the larger width dimension of the second surface 32 can make the second surface 32 have a larger area, so that when being impacted, the second surface 32 can fully absorb the impact force, avoiding the situation of relatively large local pressure.

[0071] In some embodiments, the width dimension of at least part of the support member 3 in the second direction gradually increases from the direction of the first surface 31 to the second surface 32. For example, as Figure 4 and Figure 5 shown, the width dimension of a part in the middle of the support member 3 in the left-right direction can gradually increase along the up-down direction. This design of gradually changing dimensions can achieve a slow transition of the dimensions between the first surface 31 and the second surface 32, and while meeting the dimensional design requirements, it can also ensure a good force transmission and relief effect.

[0072] In some other embodiments, the overall width dimension of the support member 3 can also gradually increase along the up-down direction (the first direction).

[0073] In some embodiments, the support member 3 further includes a plate portion 33 and a connecting portion 35. The support member 3 can be an injection molded part or a cast part, and the plate portion 33, the support portion 34, and the connecting portion 35 can be integrally formed.

[0074] The plate portion 33 and the support portion 34 are arranged oppositely in the first direction. The first surface 31 is provided on the support portion 34, and the second surface 32 is provided on the plate portion 33. For example, as Figure 4 and Figure 5 shown, the plate portion 33 can be a rectangular plate shape, the support portion 34 can be a quadrangular prism shape, the support portion 34 can be located directly above the plate portion 33, where the top end surface of the support portion 34 is the first surface 31, and the lower surface of the plate portion 33 is the second surface 32. Both the first surface 31 and the second surface 32 can be rectangular surfaces.

[0075] The width dimension of the plate portion 33 and the support portion 34 in the second direction remains the same along the first direction, and the width dimension of the plate portion 33 in the second direction is greater than the width dimension of the support portion 34 in the second direction. For example, as Figure 4 shown, the width dimension of the support portion 34 can be dimension L1, and the width dimension L1 of the support portion 34 in the up-and-down direction can always be the same. The width dimension of the plate portion 33 can be dimension L2, and the width dimension L2 of the plate portion 33 in the up-and-down direction can always be the same. Thus, the symmetry of the structure of the support member 3 can be ensured, and it is also beneficial to ensure the force transmission effect at each position.

[0076] The connecting portion 35 is connected between the plate portion 33 and the support portion 34, and the width dimension of the connecting portion 35 in the second direction gradually increases along the direction from the first surface 31 to the second surface 32. For example, as Figures 4 to 7 shown, the connecting portion 35 can be integrally formed between the support portion 34 and the plate portion 33, and the cross-section of the connecting portion 35 perpendicular to the third direction can be trapezoidal, thus facilitating the transition of different width dimensions between the first surface 31 and the second surface 32.

[0077] In some embodiments, the upper limit value of the width dimension of the connecting portion 35 in the second direction is less than the width dimension of the plate portion 33 in the second direction. For example, as Figure 4 shown, the upper limit value of the width dimension of the connecting portion 35 can be dimension L3, and dimension L3 can be less than the above-mentioned dimension L2, so that while ensuring better force conduction stability, the use of materials can be reduced, thereby playing a role in reducing costs.

[0078] In some embodiments, the lower limit value of the width dimension of the connecting portion 35 in the second direction is the same as the width dimension of the support portion 34 in the second direction. For example, as Figure 4 shown, the lower limit value of the width dimension of the connecting portion 35 can be dimension L4, and dimension L4 can be the same as the above-mentioned dimension L1. Thus, better connection structural strength and force transmission effect between the connecting portion 35 and the support portion 34 can be ensured.

[0079] In some embodiments, the two side walls 351 of the connecting portion 35 arranged oppositely in the second direction are inclined surfaces, specifically as Figure 4 and Figure 5 shown. In some other embodiments, the two side walls 351 of the connecting portion 35 arranged oppositely in the second direction can also be curved surfaces, specifically as Figure 6 and Figure 7 shown. Each curved surface can be recessed toward the inside of the connecting portion 35, thus realizing the smooth connection between the surface of the connecting portion 35 and the surfaces of the support portion 34 and the plate portion 33.

[0080] In some embodiments, the support member 3 is adhesively connected to the temperature regulating plate 1 through a first adhesive member, and the support member 3 is adhesively connected to the protection plate 2 through a second adhesive member. Both the first adhesive member and the second adhesive member can be materials such as adhesives. The adhesive strength of the first adhesive member is greater than that of the second adhesive member. Thus, during maintenance or after-sales service, the protection plate 2 can be relatively easily disassembled from the plurality of support members 3, thereby improving the convenience of repairing or replacing the protection plate 2.

[0081] In some other embodiments, the support member 3 can also be directly connected to the temperature regulating plate 1 by welding, thereby ensuring a high connection strength between the two.

[0082] In some embodiments, the adhesive strength of the second adhesive member is 2 Mpa to 3 Mpa. Thus, it can avoid the situation that the cracking occurs between the support member 3 and the protection plate 2 due to bumps during driving when the adhesive strength is too low (less than 2 Mpa), and also avoid the situation that it is not convenient to disassemble the protection plate 2 because the adhesive strength between the support member 3 and the protection plate 2 is too strong when the adhesive strength is too high (greater than 3 Mpa).

[0083] In some embodiments, the material of the support member 3 is polyurethane or aluminum. Among them, polyurethane can be formed by fiber pultrusion, thereby ensuring that the support member 3 has good side impact mechanical properties.

[0084] In some embodiments, the temperature regulating plate 1 is provided with a groove 14. The groove 14 and the flow channel 11 are arranged at intervals in the second direction, and part of the support members 3 are arranged in the groove 14. For example, as Figure 3 shown, the groove 14 can be provided on the bottom side of the temperature regulating plate 1, and the notch of the groove 14 can be arranged facing, and the groove 14 can specifically be a rectangular groove. The second direction can be the left-right direction. The temperature regulating plate 1 can be provided with a plurality of grooves 14 and a plurality of flow channels 11, and the plurality of grooves 14 and the plurality of flow channels 11 can be arranged alternately one by one in the left-right direction.

[0085] As Figure 3 shown, the above-mentioned supporting portion 34 of the support member 3 can be inserted into the groove 14 and be in close contact with the bottom wall of the groove 14, so that the groove 14 can play a positioning effect on the support member 3. Secondly, the space in the groove 14 is communicated with the exhaust passage 4 and can be regarded as a part of the exhaust passage 4, so that the exhaust passage 4 has a larger flow cross-section and ensures the exhaust effect.

[0086] In some embodiments, the temperature regulating plate 1 includes a flat plate 12 and a flow channel plate 13 arranged opposite to each other in the first direction. The flow channel plate 13 is located between the flat plate 12 and the support member 3. The flow channel 11 is arranged between the flat plate 12 and the flow channel plate 13, and the groove 14 is arranged on the side of the flow channel plate 13 facing the support member 3.

[0087] For example, the flat plate 12 can be disposed above the flow channel plate 13, and the flat plate 12 and the flow channel plate 13 can be fixedly connected by means such as welding. The flow channel plate 13 can be in a serrated or city wall-like structure, that is, a plurality of groove-like structures can be provided on both the upper side and the lower side of the flow channel plate 13. Among them, the groove-like structures on the upper side can form the flow channels 11 after the flat plate 12 and the flow channel plate 13 are attached, and the groove-like structures on the lower side are the grooves 14. The split design of the temperature regulating plate 1 facilitates the processing and production of the temperature regulating plate 1.

[0088] In some embodiments, the battery pack includes a buffer member 8. There are a plurality of support members 3, and the plurality of support members 3 are arranged at intervals. The buffer member 8 is located between the temperature regulating plate 1 and the protection plate 2, and the buffer member 8 is disposed between two adjacent support members 3.

[0089] For example, the material of the buffer member 8 can be microcellular foamed polypropylene (MPP), foamed silica gel, etc. The plurality of support members 3 can be arranged in a matrix, specifically, as Figure 8 shown, the plurality of support members 3 can be arranged at intervals in the second direction or the third direction. For example, the plurality of support members 3 can be arranged in columns along the second direction and in rows along the third direction. A buffer member 8 can be provided between any two support members 3, and the buffer member 8 can act between the temperature regulating plate 1 and the protection plate 2, thereby achieving a buffering effect.

[0090] In some embodiments, the support member 3 includes a plurality of support portions 34, and the plurality of support portions 34 are arranged at intervals along a second direction perpendicular to the first direction. For example, as Figure 11 shown, the support member 3 can be in a long row shape and can extend along the second direction. The plurality of support portions 34 can be integrally formed on the support member 3 and can be arranged at equal intervals along the second direction, and each support portion 34 can extend along the third direction.

[0091] As Figure 12 and Figure 13 shown, the temperature regulating plate 1 is provided with a plurality of flow channels 11, and the plurality of support portions 34 and the plurality of flow channels 11 are alternately arranged in the second direction. Thus, the staggered arrangement and connection of the plurality of support portions 34 and the plurality of flow channels 11 are realized.

[0092] In some embodiments, the support member 3 is provided with a plurality of limiting grooves 37, the plurality of limiting grooves 37 and the plurality of support portions 34 are alternately arranged in the second direction, the temperature regulating plate 1 is provided with a plurality of protruding portions 15, the plurality of protruding portions 15 are respectively disposed in the plurality of limiting grooves 37, and a flow channel 11 is provided in each protruding portion 15.

[0093] For example, as Figure 13As shown, each support portion 34 can protrude upward from the support member 3, and a limiting groove 37 can be defined between any two adjacent support portions 34. The limiting groove 37 can be a rectangular groove. A plurality of protruding portions 15 can be integrally formed on the bottom side of the temperature regulating plate 1. The plurality of protruding portions 15 can all be in the shape of convex ribs, and the plurality of protruding portions 15 can be respectively embedded in the plurality of limiting grooves 37 one by one. Thereby, the limiting and assembling effect between the temperature regulating plate 1 and the support member 3 can be enhanced, ensuring the structural stability between the two.

[0094] In some embodiments, the protruding portion 15 and the support member 3 are arranged at intervals in the first direction and form an interval cavity 36. For example, as Figure 13 shown, the protruding portion 15 can be integrally formed on the bottom side of the temperature regulating plate 1. The bottom side of the protruding portion 15 and the bottom wall of the limiting groove 37 can be arranged at intervals in the up and down direction and form the above-mentioned interval cavity 36. The interval cavity 36 can be regarded as a part of the internal space of the above-mentioned limiting groove 37. When a single battery undergoes thermal runaway, the gas discharged from the single battery can also flow along the interval cavity 36, thereby enhancing the exhaust effect.

[0095] In some embodiments, the battery pack includes a plurality of single batteries. In the up and down direction, the temperature regulating plate 1 is arranged between the plurality of single batteries and the protection plate 2, and the plurality of single batteries can be arranged above the temperature regulating plate 1.

[0096] As Figure 11 and Figure 12 shown, the temperature regulating plate 1 is provided with a plurality of pressure relief holes 16. The plurality of pressure relief holes 16 are respectively arranged opposite to the explosion-proof valves of the plurality of single batteries. The interval space between the temperature regulating plate 1 and the protection plate 2 is connected to the plurality of pressure relief holes 16 and is used to collect the gas discharged from the thermal runaway of the single battery. The interval space can be regarded as the above-mentioned exhaust passage.

[0097] During use, when a single battery undergoes thermal runaway, the gas discharged from the single battery can be quickly discharged into the interval space through the pressure relief hole 16, thereby playing a role in pressure relief and exhaust, which is beneficial to suppressing thermal diffusion.

[0098] In some embodiments, as Figure 14 and Figure 15 shown, the cross-section of the support member 3 is Z-shaped. At this time, the support member 3 can include two flat plates arranged opposite to each other in the first direction. The two flat plates can be connected by an inclined plate, and the flat plate located on the top side can be regarded as the above-mentioned support portion 34.

[0099] In some embodiments, as Figure 9As shown in the figure, the battery pack includes a housing 6, a cover 5, a battery assembly 7, and a potting medium 9. The housing 6 is disposed between the cover 5 and the temperature regulating plate 1, and the protection plate 2 is disposed on the side of the temperature regulating plate 1 away from the housing 6. Specifically, the housing 6 can be in a square shape, and the housing 6 can be an aluminum welded structure, a cast aluminum part, a sheet metal stamping part, an injection molded part, etc. The temperature regulating plate 1 and the protection plate 2 can both be disposed on the bottom side of the housing 6 to seal the bottom of the housing 6, wherein the temperature regulating plate 1 is located above the protection plate 2. The cover 5 can be installed on the top side of the housing 6 by means of bonding, fastening with fasteners, etc., so as to achieve the overall sealing protection of the battery pack.

[0100] The battery assembly 7 includes a plurality of single cells. For example, the plurality of single cells can be arranged in a matrix. The battery assembly 7 is disposed in the housing 6, and the battery assembly 7 is adhesively connected to the temperature regulating plate 1. Specifically, the battery assembly 7 can be adhesively fixed to the temperature regulating plate 1 by a structural adhesive 10.

[0101] The potting medium 9 can be a potting glue. The potting medium 9 is filled in the housing 6, and the potting medium 9 is adhesively connected to the cover 5. Thereby, the cover 5, the housing 6, the temperature regulating plate 1, etc. can be connected into one body, which can improve the stiffness of the entire battery pack and also improve the overall pressure resistance performance.

[0102] When assembling the battery pack according to the embodiment of the present invention, as Figure 10 shown, the assembly of the housing 6, the temperature regulating plate 1, the support member 3, the protection plate 2, etc. can be completed first. Specifically, as shown in FIG. a in Figure 10 , then the structural adhesive 10 can be bonded in the housing 6, and then the assembled battery assembly 7 can be placed into the housing 6 and adhesively fixed to the upper surface of the temperature regulating plate 1 by the structural adhesive 10. Specifically, as shown in FIG. b in Figure 10 . Then the potting medium 9 can be poured into the housing 6. After pouring, as shown in FIG. c in Figure 10 . Finally, the cover 5 is quickly fixed to the top side of the housing 6, and the top side of the potting medium 9 is adhesively fixed to the cover 5. Specifically, as shown in FIG. d in Figure 10 .

[0103] The vehicle according to the embodiment of the present invention will be described below.

[0104] The vehicle according to the embodiment of the present invention includes a battery pack, and the battery pack can be the battery pack described in any of the above embodiments. The vehicle can be a sedan, an SUV, a truck, a bus, etc., and of course, it can also be other vehicles that need to install a battery pack.

[0105] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present invention.

Claims

1. A battery pack, characterized in that, Comprising: A temperature regulating plate and a protection plate, wherein a flow channel for the circulation of a temperature regulating medium is provided in the temperature regulating plate, and the protection plate is arranged at an interval from the temperature regulating plate in a first direction; A support member, which is arranged between the temperature regulating plate and the protection plate. The support member includes a support portion for abutting against the temperature regulating plate, and the support portion is arranged in a dislocation manner with respect to the flow channel.

2. The battery pack according to claim 1, wherein The support member includes a first surface and a second surface that are oppositely arranged in the first direction. The first surface is in fitting contact with the temperature regulating plate, and the second surface is in fitting contact with the protection plate. Moreover, the width dimension of the first surface in a second direction perpendicular to the first direction is smaller than the width dimension of the second surface in the second direction.

3. The battery pack according to claim 2, characterized in that, At least a part of the width dimension of the support member in the second direction gradually increases in the direction from the first surface to the second surface.

4. The battery pack according to claim 3, wherein The support member further includes: A plate portion, which is oppositely arranged with the support portion in the first direction. The first surface is arranged on the support portion, and the second surface is arranged on the plate portion. Moreover, the width dimension of the plate portion in the second direction is larger than the width dimension of the support portion in the second direction; A connecting portion, which is connected between the plate portion and the support portion. The width dimension of the connecting portion in the second direction gradually increases in the direction from the first surface to the second surface.

5. The battery pack according to claim 4, characterized in that, The upper limit value of the width dimension of the connecting portion in the second direction is smaller than the width dimension of the plate portion in the second direction; And / or, the lower limit value of the width dimension of the connecting portion in the second direction is consistent with the width dimension of the support portion in the second direction.

6. The battery pack according to claim 4, characterized in that, The two side walls of the connecting portion that are oppositely arranged in the second direction are inclined surfaces or curved surfaces.

7. The battery pack according to claim 1, characterized in that, The support member is adhesively connected to the temperature regulating plate through a first adhesive, and the support member is adhesively connected to the protection plate through a second adhesive. The adhesive strength of the first adhesive is greater than the adhesive strength of the second adhesive.

8. The battery pack according to claim 1, characterized in that, The temperature regulating plate is provided with a groove, the groove and the flow channel are arranged at an interval in the second direction, and a part of the support member is arranged in the groove.

9. The battery pack according to claim 8, characterized in that, The temperature regulating plate includes a flat plate and a flow channel plate that are oppositely arranged in the first direction. The flow channel plate is located between the flat plate and the support member. The flow channel is arranged between the flat plate and the flow channel plate, and the groove is arranged on the side of the flow channel plate facing the support member.

10. The battery pack according to claim 1, wherein Comprising a buffer member. There are a plurality of the support members, and the plurality of support members are arranged at intervals. The buffer member is located between the temperature regulating plate and the protection plate, and the buffer member is arranged between two adjacent support members.

11. The battery pack according to any one of claims 1 to 3, characterized in that, The support member includes a plurality of the support portions, and the plurality of support portions are arranged at intervals in a second direction perpendicular to the first direction. The temperature regulating plate is provided with a plurality of the flow channels, and the plurality of support portions and the plurality of flow channels are alternately arranged in the second direction.

12. The battery pack according to claim 11, wherein, The support member is provided with a plurality of limiting grooves, and the plurality of limiting grooves and the plurality of support portions are alternately arranged and connected in the second direction. The temperature regulating plate is provided with a plurality of protruding portions, and the plurality of protruding portions are respectively arranged in the plurality of limiting grooves, and each protruding portion is provided with the flow channel.

13. The battery pack according to claim 12, characterized in that, The protruding part and the support are arranged at intervals in the first direction and form an interval cavity.

14. The battery pack according to claim 1, characterized in that, It includes a plurality of single cells. The temperature regulating plate is arranged between the plurality of single cells and the protection plate. The temperature regulating plate is provided with a plurality of pressure relief holes, and the plurality of pressure relief holes are respectively arranged opposite to the explosion-proof valves of the plurality of single cells. The interval space between the temperature regulating plate and the protection plate is connected to the plurality of pressure relief holes and is used to collect the gas discharged during the thermal runaway of the single cells.

15. The battery pack according to claim 1, wherein, The cross section of the support is Z-shaped.

16. A vehicle, characterized in that, It includes a battery pack according to any one of the above claims 1-15.

Images