Battery cell shell and battery cell
By designing grooves on the outer shell of the battery cell to install the connector, the problem of the cooling medium connector protruding and occupying space is solved, realizing a compact design and high energy density of the battery cell and improving heat dissipation efficiency.
Patent Information
- Application Number
- CN202422626399.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-10-29
AI Technical Summary
When existing pouch cells are combined with prismatic cells, the cooling medium connector protrudes outwards, occupying space and increasing the external dimensions of the cell, thus affecting energy density.
Design a battery cell housing with connectors installed in grooves within the housing. Cooling medium enters and exits through these grooves. The housing is designed as a rectangular structure with L>W and L>D. Connectors are located on both sides of the housing, simplifying cover plate processing and improving structural strength.
This reduces the impact of connectors on the external dimensions of the battery cell, saves space, increases the energy density of the battery cell module, and enhances heat dissipation.
Smart Images
Figure CN223651497U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery technology field especially relates to a kind of electric core shell and electric core. BACKGROUND
[0002] Prior art is combined by soft package electric core and square shell, and soft package electric core outer sleeve square shell electric core is designed, which is beneficial to the combination of the high energy density, structural strength and other advantages.But the joint of such electric core into cooling medium is generally directly installed on the outer surface of square shell, resulting in the joint protruding and occupying space. SUMMARY
[0003] At present, after soft package electric core and square shell are combined, soft package electric core outer sleeve square shell electric core is designed, and the joint connected with the cooling medium protrudes and occupies space.In order to overcome these shortcomings and deficiencies, the purpose of the utility model is to provide a kind of electric core shell and electric core, solve the problem of joint protruding design, reduce the influence of joint on the outer size of electric core, and save space.
[0004] The purpose of the utility model is achieved by the following technical solutions:
[0005] An electric core shell comprises a shell and a joint, the shell is used for accommodating soft package electric core, the shell is provided with a groove, the joint is installed in the groove, and the joint is used for the cooling medium into and out of the shell to cool the soft package electric core.
[0006] In an embodiment, two opposite sides of the shell are respectively provided with the groove, the joint comprises an inlet joint and an outlet joint, and the inlet joint and the outlet joint are respectively arranged in the two grooves.
[0007] In an embodiment, the shell has a first length direction, a first width direction and a first thickness direction, the size of the shell in the first length direction is L, the size of the shell in the first width direction is W, and the size of the shell in the first thickness direction is D, L>W and L>D;The inlet joint and the outlet joint are respectively arranged on both sides of the shell along the first length direction.
[0008] In an embodiment, the shell comprises a shell and two cover plates, the shell is a hollow cavity structure with two open ends, two cover plates are respectively arranged on both ends of the shell, and the grooves are respectively arranged on the two cover plates.
[0009] In an embodiment, the cover plate is provided with a pole and / or an explosion-proof valve, along the length direction of the cover plate, the distance between the edge of the cover plate close to the groove and the groove is b1, the distance between the pole and the groove is b2, and the distance between the explosion-proof valve and the groove is b3; wherein, 5mm≤b1, 5mm≤b2, 5mm≤b3.
[0010] In an embodiment, the groove has a second length direction and a second width direction, the size of the groove in the second length direction is a1, and the size of the groove in the second width direction is a2; wherein, 22mm≤a2≤a1.
[0011] In an embodiment, the groove has a second depth direction, and the size of the groove in the second depth direction is a3; wherein, 5mm≤a3≤22mm.
[0012] In an embodiment, 12mm≤a3≤20mm.
[0013] The utility model also provides a kind of electric core, include soft package electric core and the electric core shell as described above, the soft package electric core is housed in the electric core shell, the joint is used to external cooling medium circulation pipeline.
[0014] The utility model has the advantages that the joint is installed in the groove of the shell, which is beneficial to reduce the influence of the joint on the outer size of the electric core, save space, and is beneficial to reduce the outer size of the module assembled by the electric core, and improve the energy density. BRIEF DESCRIPTION OF DRAWINGS
[0015] To more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced to the drawings needed to be used in the embodiment, and should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, other related drawings can be obtained according to these drawings without the creative labor.
[0016] Figure 1 It is the structure schematic diagram that the electric core shell of the embodiment of the utility model is connected with quick coupling water pipe;
[0017] Figure 2 It is the exploded schematic diagram of electric core shell;
[0018] Figure 3 It is cover plate structure schematic diagram;
[0019] Figure 4 It is the exploded schematic diagram of cover plate and inner insulating piece.
[0020] In the figure: 1, the shell of the battery cell; 2, the shell; 21, the cover plate; 211, the groove; 212, the inner recess; 213, the pole; 214, the explosion-proof valve; 22, the shell; 3, the joint; 31, the inlet joint; 32, the outlet joint; 4, the inner insulating piece; 41, the cavity; 42, the cooling liquid through hole; 43, the pole through hole; 44, the valve through hole; 5, the quick-connecting water pipe. DETAILED DESCRIPTION
[0021] The specific embodiments of the present application will be described below in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the description of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0022] In the description of the present application, unless otherwise explicitly specified and limited, the terms "set", "install", "connect" and the like should be broadly understood, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0023] The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of description and simplification of description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0024] The terms "first", "second", "third" and the like are only for distinguishing similar attributes of elements, and do not indicate or imply relative importance or a particular order.
[0025] The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, in addition to including the listed elements, other elements not explicitly listed can also be included.
[0026] For the combination of soft package battery cell and square shell, a battery cell with square shell outside the soft package battery cell is designed. The prior art usually directly installs the joint for passing in the cooling medium on the outer surface of the square shell, resulting in the protrusion of the joint and the occupation of space. Figure 1As shown, the utility model provides a kind of electric core shell 1, including shell 2 and joint 3, shell 2 is used to accommodate soft package electric core (not shown), shell 2 is equipped with concave groove 211, joint 3 is installed in groove 211, joint 3 is used to supply cooling medium to and from shell 2, to cool soft package electric core.
[0027] In the embodiment, joint 3 is installed in the groove 211 of shell 2, which is beneficial to reduce the influence of joint 3 on the outer size of the electric core, save space, and is beneficial to reduce the outer size of the module assembled by the electric core, improve the energy density; cooling medium can enter and exit shell 2 through joint 3, the surface of soft package electric core can directly contact the cold source, and the liquid cooling medium (i.e. cooling liquid) can completely contact the surface of soft package electric core, which is beneficial to improve the heat dissipation effect.
[0028] As an embodiment, as shown in Figure 1 and Figure 2 As shown, two opposite sides of shell 2 are respectively provided with groove 211, joint 3 includes inlet joint 31 and outlet joint 32, inlet joint 31 and outlet joint 32 are respectively arranged in two grooves 211, which can make cooling liquid pass through the entire inside of shell 2 to fully contact soft package electric core, thereby improving the heat dissipation effect.
[0029] As an embodiment, as shown in Figure 1 and Figure 2 As shown, shell 2 has a first length direction X1, a first width direction Y1 and a first thickness direction Z1, the size of shell 2 in the first length direction X1 is L, the size in the first width direction Y1 is W, and the size in the first thickness direction Z1 is D, L>W and L>D, so that the size of shell 2 in the first length direction X1 is maximum; inlet joint 31 and outlet joint 32 are respectively arranged on the two sides of shell 2 along the first length direction X1, so that the flow path of cooling liquid in shell 2 is longer.
[0030] As an embodiment, as shown in Figures 1-3 As shown, shell 2 includes shell body 22 and two cover plates 21, shell body 22 is a hollow cavity structure with two open ends, two cover plates 21 are respectively arranged at the two ends of shell body 22, and groove 211 is arranged on the two cover plates 21. When joint 3 is arranged in groove 211 of shell 2, a through hole is needed to be arranged in communication with joint 3 to pass cooling liquid, groove 211 is arranged on cover plate 21, and through hole is needed to be arranged in groove 211, which is convenient for arranging through hole in cover plate 21, without additional processing of shell body 22, simplifying the process, and also beneficial to improve the structural strength of shell body 22 which is relatively thin at cover plate 21.
[0031] As an embodiment, as shown in Figure 3 and Figure 4As shown, the cover plate 21 is provided with a pole 213 and / or an explosion-proof valve 214, along the length direction X3 of the cover plate 21, the distance between the edge of the cover plate 21 close to the groove 211 and the groove 211 is b1, the distance between the pole 213 and the groove 211 is b2, and the distance between the explosion-proof valve 214 and the groove 211 is b3; wherein 5mm≤b1, 5mm≤b2, 5mm≤b3. In this way, the difficulty of opening the cover plate 21 during processing is avoided when the groove 211 is too close to the edge of the cover plate 21, the pole 213 or the explosion-proof valve 214, and the cover plate 21 is not too narrow between the groove 211 and the edge of the cover plate 21, the pole 213 or the explosion-proof valve 214, which is prone to breakage. Wherein, the edge of the cover plate 21 refers to the edge of the surface of the cover plate 21 perpendicular to the thickness direction of the cover plate 21.
[0032] As an embodiment, as shown in Figure 1 and Figure 3 As shown, the groove 211 has a second length direction X2 and a second width direction Y2, the size of the groove 211 in the second length direction X2 is a1, and the size of the groove 211 in the second width direction Y2 is a2; wherein 22mm≤a2≤a1; so that the groove 211 can accommodate a joint 3 of a certain aperture.
[0033] As an embodiment, as shown in Figure 3 and Figure 4 As shown, the groove 211 has a second depth direction Z2, and the size of the groove 211 in the second depth direction Z2 is a3; wherein 5mm≤a3≤22mm. In this way, when the distance between the cover plate 21 and the soft-pack battery cell is appropriate, the installation of the soft-pack battery cell is avoided by the groove 211 being too deep, and the accommodation of the joint 3 is avoided by being too shallow, which leads to a greater impact of the joint 3 on the outer size of the battery cell.
[0034] As an embodiment, 12mm≤a3≤20mm; within this size range, not only can the joint 3 be accommodated more, avoiding too much exposure of the joint 3, but also the installation of the soft-pack battery cell will not be affected.
[0035] As an embodiment, as shown in Figure 1 and Figure 3 As shown, the second depth direction Z2 is parallel to the first length direction X1; the second length direction X2, the length direction L of the cover plate 21, and the first width direction Y1 are parallel; and the second width direction W2 is parallel to the first thickness direction Z1.
[0036] As an embodiment, as shown in Figure 3 and Figure 4 As shown, the cover plate 21 is a metal cover plate, and the cover plate 21 forms an inner recess 212 at the groove 211, which is formed integrally by the cover plate 21.
[0037] As an embodiment, as shown inFigures 2 to 4 As shown in the drawings, the electric core shell 1 further comprises an inner insulating piece 4, which is arranged between the cover plate 21 and the soft package electric core, and is provided with a recessed cavity 41 for accommodating the inner recessed portion 212, the recessed cavity 41 is provided with a cooling liquid through hole 42 for the cooling liquid to pass through, and the inner insulating piece 4 is provided with a pole column through hole 43 and a valve through hole 44 corresponding to the pole column 213 and the explosion-proof valve 214, which are in communication with the inner cavity of the shell 2. The inner recessed portion 212 of the cover plate 21 is accommodated in the recessed cavity 41 of the inner insulating piece 4, which is beneficial to improve the insulation performance.
[0038] As an embodiment, the soft package electric core is electrically connected with the pole column 213 of the cover plate 21.
[0039] As an embodiment, as shown in the drawings, Figures 1-3 As shown in the drawings, the joint 3 is connected with the total liquid cooling pipe line on the battery pack through the quick connecting water pipe 5, and the total liquid cooling pipe line is connected with the cooling unit of the vehicle to form a cooling liquid circulating system.
[0040] The utility model also provides a kind of electric core, as shown in the drawings, Figure 1 And Figure 3 As shown in the drawings, it comprises soft package electric core (not shown) and the electric core shell 1 as described above, and the soft package electric core is accommodated in the electric core shell 1, and the joint 3 is used to externally connect the cooling medium circulating pipe line. The cooling medium circulating pipe line is made of insulating material.
[0041] As an embodiment, the electric core shell 1 contains one soft package electric core, to better protect the soft package electric core.
[0042] The joint 3 of the utility model is installed in the groove 211 of the shell 2, which is beneficial to reduce the influence of the joint 3 on the outer dimension of the electric core, save space, and reduce the outer dimension of the module assembled by the electric core, improve the energy density; the cooling liquid can enter and exit the shell 2 through the joint 3, the surface of the soft package electric core can directly contact the cooling source, and the liquid cooling liquid can completely contact the surface of the soft package electric core, which is beneficial to improve the heat dissipation effect.
[0043] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has been disclosed as above, however, it is not intended to limit the utility model, any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution range of the utility model, to make equivalent embodiments, but as long as it does not depart from the technical solution content of the utility model, any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model, all still belong to the protection range of the technical solution of the utility model.
Claims
1. An electric cell housing, characterized by, The shell (2) is used for containing the soft package battery cell, and the recess (211) is arranged on the shell (2); the joint (3) is arranged in the recess (211) and is used for the cooling medium to enter or exit the shell (2) to cool the soft package battery cell. The two opposite sides of the shell (2) are respectively provided with the recess (211), and the joint (3) comprises an inlet joint (31) and an outlet joint (32), wherein the inlet joint (31) and the outlet joint (32) are respectively arranged in the two recesses (211).
2. The cell case of claim 1, wherein, The shell (2) has a first length direction (X1), a first width direction (Y1) and a first thickness direction (Z1), the size of the shell (2) in the first length direction (X1) is L, the size of the shell (2) in the first width direction (Y1) is W, and the size of the shell (2) in the first thickness direction (Z1) is D, L>W and L>D; the inlet joint (31) and the outlet joint (32) are respectively arranged on the two sides of the shell (2) along the first length direction (X1).
3. The cell case of claim 1, wherein, The shell (2) comprises a shell body (22) and two cover plates (21), the shell body (22) is a hollow cavity structure with two open ends, and the two cover plates (21) are respectively arranged on the two ends of the shell body (22); the recess (211) is arranged on each of the two cover plates (21).
4. The cell case of claim 3, wherein, The cover plate (21) is provided with a pole (213) and / or an explosion-proof valve (214), along the length direction (X3) of the cover plate (21), the distance between the edge of the cover plate (21) close to the recess (211) and the recess (211) is b1, the distance between the pole (213) and the recess (211) is b2, and the distance between the explosion-proof valve (214) and the recess (211) is b3; wherein 5mm≤b1, 5mm≤b2, 5mm≤b3.
5. The cell case of claim 1, wherein, The recess (211) has a second length direction (X2) and a second width direction (Y2), the size of the recess (211) in the second length direction (X2) is a1, and the size of the recess (211) in the second width direction (Y2) is a2; wherein 22mm≤a2≤a1.
6. The cell housing of claim 1, wherein, The recess (211) has a second depth direction (Z2), and the size of the recess (211) in the second depth direction (Z2) is a3; wherein 5mm≤a3≤22mm.
7. The cell housing of claim 6, wherein, 12mm≤a3≤20mm.
8. An electric cell characterized by The shell (2) is used for containing the soft package battery cell, and the recess (211) is arranged on the shell (2); the joint (3) is arranged in the recess (211) and is used for the cooling medium to enter or exit the shell (2) to cool the soft package battery cell.