Battery pack and battery pack

Abstract

The utility model relates to the field of batteries and discloses a battery pack and a battery pack. The battery pack comprises at least two batteries; the busbar is connected with the pole columns of the two batteries and electrically connects the two batteries; and the heat preservation part is attached to the surface, deviating from the battery, of the busbar and is connected with the busbar. The heat preservation sheet can be used as a physical isolation layer on the surface of the busbar to isolate the busbar from the internal environment of the battery pack, so that the influence on the busbar caused by the change of temperature and humidity in the battery pack can be reduced, and the physical isolation effect is beneficial to reducing the condensation phenomenon on the surface of the busbar. Besides, in a high-humidity environment, the content of water vapor in the air is high, water drops are more easily condensed on the surface of the busbar, the contact area between the surface of the busbar and humid air can be reduced by attaching the heat preservation sheet to the surface of the busbar, the water vapor in the air is more difficult to make contact with the surface of the busbar, and therefore the condensation opportunity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to battery packs and battery modules. Background Technology

[0002] With the continuous advancement of new energy technologies, battery packs, as one of their core components, face numerous challenges in safety design. Especially during the charging and discharging process, current is transmitted through the busbar (BUSBAR), inevitably generating heat and causing the busbar and surrounding environment temperature to rise. To maintain the normal operating temperature of the battery pack, a cooling system is typically installed to cool the busbar.

[0003] However, when the battery pack is in a humid operating environment, moisture is prone to condensation when it comes into contact with the busbar surface after being cooled by the cooling system. This condensation can not only lead to a decrease in the internal insulation performance of the battery pack, but may also cause serious safety hazards such as short circuits, thereby reducing the overall safety performance of the battery pack. Utility Model Content

[0004] In view of this, the present invention provides a battery pack and a battery stack to solve or improve the problem that moisture is prone to condensation when it encounters the manifold surface after being cooled by the cooling system.

[0005] In a first aspect, this utility model provides a battery pack, comprising:

[0006] The number of batteries is set to at least two;

[0007] A busbar that connects the terminals of two batteries and electrically connects the two batteries;

[0008] An insulation component is attached to the surface of the busbar facing away from the battery and is connected to the busbar.

[0009] In one alternative embodiment, the portion of the busbar located between the two poles is provided with a curved protrusion that protrudes toward or away from the insulation member.

[0010] In one optional embodiment, the curved protrusion protrudes in a direction away from the insulation member, and the insulation member is provided with a rib at a position corresponding to the curved protrusion, the rib being disposed in a recess on the back side of the curved protrusion.

[0011] Alternatively, the curved protrusion protrudes towards the direction of the insulation component, and the insulation component is provided with a receiving groove at the position corresponding to the curved protrusion, with the curved protrusion disposed in the receiving groove.

[0012] In one optional embodiment, the battery pack further includes a support plate connected to the top of the battery. The support plate has a groove with the opening of the groove facing away from the battery. The bottom of the groove has an opening for the terminal post to pass through. The busbar is disposed in the groove, and the groove is used to limit the movement of the busbar.

[0013] In one optional embodiment, the opening includes two through holes spaced apart, each through hole corresponding to one of the two pole posts.

[0014] The battery pack also includes a positioning element connected to the bottom of the groove and located between the two through holes. The busbar is provided with a first positioning hole through which the positioning pin passes.

[0015] In one optional embodiment, the insulation component is provided with a second positioning hole through which the positioning pin passes.

[0016] In one alternative embodiment, the insulation component is bonded, snapped, riveted, or screwed to the manifold.

[0017] Secondly, this utility model also provides a battery pack, including a housing, a cover plate, and a battery pack as described above. The housing has an opening through which the battery pack can pass, the battery pack is disposed inside the housing, and the cover plate closes to the opening.

[0018] In one alternative embodiment, the battery pack further includes a dehumidifying plate disposed above the battery.

[0019] In one optional embodiment, the battery pack further includes protective components corresponding to the battery pack, the protective components including a first protective plate portion, a second protective plate portion and a third protective plate portion;

[0020] The first protective plate is located on the top of the battery pack, and the second and third protective plates are located on both sides of the battery pack, with the second and third protective plates connected to the first protective plate.

[0021] The battery pack provided by this utility model has a heat insulation component on the surface of the busbar. The heat insulation sheet can act as a physical isolation layer on the surface of the busbar, separating the busbar from the internal environment of the battery pack. This can reduce the impact of changes in temperature and humidity inside the battery pack on the busbar. This physical isolation helps maintain the stability of the busbar surface and reduces the occurrence of condensation.

[0022] In addition, in high humidity environments, the water vapor content in the air is higher, making it easier for water droplets to condense on the surface of the manifold. By attaching insulation sheets to the surface of the manifold, the contact area between the manifold surface and the humid air can be reduced, making it more difficult for water vapor in the air to come into contact with the manifold surface, thereby reducing the chance of condensation.

[0023] The battery pack provided by this utility model includes all the advantages of the battery pack mentioned above, since it includes the battery group provided by this utility model. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A schematic diagram of a busbar installed on a battery and the insulation component detached from the busbar, provided in an embodiment of this utility model;

[0026] Figure 2 A top view of the pole penetrating the groove through the through hole at the bottom of the groove, as provided in an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the battery pack provided in an embodiment of the present utility model;

[0028] Figure 4 This is an exploded view of the battery pack structure provided in an embodiment of the present invention;

[0029] Figure 5 A schematic diagram of the structure of the protective component provided in an embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Battery; 101. Terminal post; 2. Busbar; 201. Bending protrusion; 3. Insulation component; 301. Rib; 302. Second positioning hole; 4. Support plate; 401. Groove; 402. Through hole; 5. Positioning component; 6. Housing; 7. Cover plate; 8. Dehumidification plate; 9. Protective component; 901. First protective plate section; 902. Second protective plate section; 903. Third protective plate section. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] When the battery pack is in a humid working environment, moisture is prone to condensation when it comes into contact with the busbar surface after being cooled by the cooling system. This condensation can not only reduce the internal insulation performance of the battery pack, but also potentially cause serious safety hazards such as short circuits, thereby reducing the overall safety performance of the battery pack.

[0034] To address or improve the problem of condensation easily occurring when moisture encounters the manifold surface after being cooled by the cooling system, this utility model provides a battery pack and a battery module.

[0035] The following is combined Figures 1 to 5 This describes the battery pack provided in the embodiments of the present invention.

[0036] Specifically, the battery pack includes a battery 1, a busbar 2, and an insulation component 3.

[0037] The quantity of battery 1 is set to at least two. For example, refer to Figure 3 As shown, battery 1 can be configured in two rows. Of course, battery 1 can also be configured in one row or three rows.

[0038] Busbar 2 connects the terminals 101 of two batteries 1 and electrically connects the two batteries 1. For example, busbar 2 connects two batteries 1 in series. In the two batteries 1 connected in series through busbar 2, the positive terminal 101 of one battery 1 and the negative terminal 101 of the other battery 1 are both attached and connected to the same side surface of busbar 2. All batteries 1 of the battery pack are connected in series through busbar 2 to form a whole. For example, the positive terminal 101 of battery 1 and the negative terminal 101 of the next battery 1 are connected through busbar 2 until the last battery 1, so that the voltage of the entire battery pack is equal to the sum of the voltages of all individual batteries 1. Optionally, busbar 2 is welded to the terminals 101 of the batteries 1. For example, busbar 2 can be, but is not limited to, a copper sheet or an aluminum sheet.

[0039] The insulation component 3 is attached to the surface of the busbar 2 facing away from the battery 1, and is connected to the busbar 2. Optionally, the insulation component 3 can be configured as a porous structure or a fiber structure. The porous structure includes, but is not limited to, aerogel, flame-retardant foam, and perlite board; for example, the flame-retardant foam can be phenolic foam or polyurethane foam. The fiber structure includes, but is not limited to, insulation cotton board; for example, the insulation cotton board can be rock wool board or glass wool board. Optionally, in the battery pack, each busbar 2 is provided with a corresponding insulation component 3.

[0040] In this embodiment, by providing a heat insulation element 3 on the surface of the busbar 2, the heat insulation sheet can serve as a physical isolation layer on the surface of the busbar 2, isolating the busbar 2 from the internal environment of the battery pack. This reduces the impact of changes in temperature and humidity inside the battery pack on the busbar 2. This physical isolation helps maintain the stability of the surface of the busbar 2 and reduces the occurrence of condensation.

[0041] In addition, in high humidity environments, the water vapor content in the air is higher, making it easier for water droplets to condense on the surface of manifold 2. By attaching insulation sheets to the surface of manifold 2, the contact area between the surface of manifold 2 and the humid air can be reduced, making it more difficult for water vapor in the air to come into contact with the surface of manifold 2, thereby reducing the chance of condensation.

[0042] refer to Figure 1 As shown, in some embodiments of this utility model, the portion of the busbar 2 located between the two poles 101 is provided with a curved protrusion 201. The curved protrusion 201 protrudes towards or away from the insulation member 3.

[0043] In this embodiment, by providing a curved protrusion 201 on the busbar 2, the curved protrusion 201 can act as a reinforcing rib, thereby increasing the structural strength and rigidity of the busbar 2, and thus reducing the problem of the busbar 2 being prone to breakage due to vibration or impact.

[0044] In addition, by providing a curved protrusion 201 on the busbar 2, the rigidity and strength of the busbar 2 can be improved without increasing its weight, compared to increasing the overall thickness or material usage of the busbar 2, thereby ensuring the lightweight effect of the battery pack.

[0045] Alternatively, the curved protrusion 201 can be formed by bending or stamping. Both bending and stamping processes enable high-precision machining, ensuring that the dimensions and shape of the curved protrusion 201 are highly consistent with design requirements. Bending and stamping processes are typically carried out on automated production lines, thus improving the production efficiency of the busbar 2.

[0046] refer to Figure 1As shown, in some embodiments provided by this utility model, the curved protrusion 201 protrudes in a direction away from the heat insulation member 3, and the heat insulation member 3 is provided with a rib 301 at the position corresponding to the curved protrusion 201. The rib 301 is provided in the recess on the back of the curved protrusion 201.

[0047] When the manifold 2 bends and protrudes in the middle, the inner side (i.e., the back side) of the bending area thins due to material compression, forming a depression facing the insulation component 3, preventing the insulation component 3 from fitting against the depression. In this embodiment, by providing a rib 301 at the position corresponding to the bending protrusion 201 on the insulation component 3, and by placing the rib 301 within the depression on the back side of the bending protrusion 201, the rib 301 can fill the depression. For example, the rib 301 can fit against the depression, thereby minimizing the area of ​​the manifold 2 not covered by the insulation component 3, and thus improving the anti-condensation effect of the manifold 2.

[0048] In addition, the curved protrusion 201 is made to protrude away from the heat preservation member 3, so that the curved protrusion 201 can be placed in the space between the terminals 101 of the two batteries 1. The space between the terminals 101 of the two batteries 1 can accommodate the curved protrusion 201, making the battery pack structure more compact and avoiding interference between the curved protrusion 201 and other components.

[0049] Of course, the curved protrusion 201 is not limited to protruding away from the heat insulation member 3. For example, in other embodiments provided by this utility model, the curved protrusion 201 protrudes towards the heat insulation member 3, that is, the recess on the back of the curved protrusion 201 faces the battery 1. The heat insulation member 3 is provided with a receiving groove at the position corresponding to the curved protrusion 201, and the curved protrusion 201 is disposed in the receiving groove.

[0050] In this embodiment, by providing a receiving groove at the position corresponding to the curved protrusion 201 of the insulation member 3, and the receiving groove can be used to insert the curved protrusion 201, for example, the receiving groove can fit with the curved protrusion 201, thereby minimizing the area of ​​the manifold 2 not covered by the insulation member 3, and thus improving the anti-condensation effect of the manifold 2.

[0051] refer to Figure 1 and Figure 2 As shown, in some embodiments provided by this utility model, the battery pack also includes a support plate 4.

[0052] The support plate 4 is connected to the top of the battery 1. For example, the support plate 4 can be connected to the top of the battery 1 by adhesive or fasteners. The support plate 4 has a groove 401, the opening of which faces away from the battery 1, for example, refer to... Figure 1As shown, the opening of the groove 401 faces upward. The bottom of the groove 401 has an opening through which the electrode post 101 passes, and the electrode post 101 enters the groove 401 through the opening. The busbar 2 is disposed within the groove 401 and connected to the electrode post 101 within the groove 401. The groove 401 serves to limit the movement of the busbar 2.

[0053] In this embodiment, a support plate 4 is provided on the top of the battery 1 to facilitate the arrangement of other components on the support plate 4. That is, the support plate 4 can serve as a mounting platform for other components, achieving insulation between other components and the battery. In addition, by providing a groove 401 on the support plate 4 to limit the busbar 2, displacement of the busbar 2 can be avoided, ensuring the stability of the connection between the busbar 2 and the terminal post 101.

[0054] Meanwhile, the busbar 2 is limited by the groove 401. During the installation process, the busbar 2 is placed in the groove 401, so that the busbar 2 and the pole post 101 are in the correct relative position, thereby reducing the installation difficulty of the busbar 2.

[0055] Furthermore, the opening at the bottom of the groove 401 is matched with the terminal post 101 of the battery 1 for positioning. In this way, the terminal post 101 can limit the support plate 4 in a direction perpendicular to the opening, so that there is a unique and accurate relative positional relationship between the support plate 4 and the battery 1. This can ensure the accurate installation position of the busbar 2 on the one hand, and reduce the positioning and installation difficulty of the support plate 4 on the other hand.

[0056] refer to Figure 2 As shown, in some embodiments of this utility model, the opening includes two through holes 402 arranged at intervals, each corresponding to one of the two pole posts 101. The two through holes 402 are arranged at intervals, and the portion between the two through holes 402 can form an installation area.

[0057] The battery pack also includes a positioning element 5. The positioning element 5 is connected to the bottom of the groove 401 and located between the two through holes 402, i.e., the positioning element 5 is disposed in the mounting area. The positioning element 5 can be configured as a positioning pin. The busbar 2 is provided with a first positioning hole through which the positioning pin passes.

[0058] In this embodiment, the opening includes two through holes 402 arranged at intervals, and the space between the through holes 402 can form an installation area for installing the positioning member 5. The positioning member 5 cooperates with the first positioning hole on the busbar 2, thereby limiting the busbar 2. This ensures that the installation position of the busbar 2 is accurate and improves the connection strength between the busbar 2 and the pole post 101.

[0059] In some embodiments of this utility model, the insulation component 3 is provided with a second positioning hole 302 for the positioning pin to pass through. In this embodiment, by providing the second positioning hole 302 on the insulation component 3, it is convenient to install the insulation component 3, and it can improve the connection strength between the insulation component 3 and the busbar 2, preventing the insulation component 3 from sliding or shifting on the surface of the busbar 2.

[0060] In some embodiments provided by this utility model, at least two positioning elements 5 are provided at the bottom of the groove 401, the at least two positioning elements 5 are arranged sequentially, and the arrangement direction of the positioning elements 5 is perpendicular to the arrangement direction of the two pole posts 101. The busbar 2 is provided with a first positioning hole corresponding to each positioning element 5, and the heat insulation element 3 is provided with a second positioning hole 302 corresponding to each positioning element 5.

[0061] In this embodiment, by providing at least two positioning elements 5, the busbar 2 or the insulation element 3 can be prevented from deflecting, thereby improving the positioning effect of the busbar 2 or the insulation element 3. By arranging the positioning elements 5 perpendicular to the arrangement direction of the two pole posts 101, the space between the two pole posts 101 can be fully utilized to install and arrange the positioning elements 5, thereby improving the utilization rate of the space between the two pole posts 101.

[0062] In some embodiments provided by this utility model, the heat insulation component 3 is bonded to the busbar 2, for example, the heat insulation component 3 and the busbar 2 are bonded together with adhesive.

[0063] Alternatively, the insulation component 3 can also be snapped into the busbar 2. For example, one of the insulation component 3 and the busbar 2 is provided with a snap head, and the other is provided with a snap groove for the snap head to be inserted.

[0064] Alternatively, the insulation component 3 can also be riveted or screwed to the manifold 2. Specifically, it can be riveted or screwed to the manifold 2 through a connector. For example, the connector can be a riveted component or a threaded connector.

[0065] This utility model also provides a battery pack in this embodiment.

[0066] Specifically, the battery pack includes a housing 6, a cover 7, and a battery pack as described above.

[0067] The housing 6 has an opening through which the battery pack can pass, and the battery pack is located inside the housing 6. The cover 7 is closed over the opening.

[0068] In this embodiment, the battery pack includes the battery array and thus all the advantages of the battery array mentioned above, so further details will not be elaborated upon. Additionally, the housing 6 provides structural support for the battery pack, protecting the battery 1 from mechanical shocks and vibrations, ensuring the stability of the battery 1. The housing 6 also prevents the battery 1 from being affected by external environmental factors such as dust and moisture, protecting the battery 1 from corrosion and damage.

[0069] In some embodiments of this utility model, the battery pack further includes a dehumidifying plate 8. The dehumidifying plate 8 is disposed above the battery 1. In this embodiment, by setting the dehumidifying plate 8, moisture inside the housing 6 can be absorbed, thereby reducing the humidity inside the battery pack and preventing condensation. That is, the dehumidifying plate 8 absorbs moisture inside the battery pack at the entire pack level, while the insulation layer corresponds one-to-one with the busbar 2, isolating high-temperature and high-humidity air at the busbar 2 level. In other words, the dehumidifying plate 8 can cooperate with the insulation layer to prevent condensation from occurring on the busbar 2 at two different levels, thereby improving the anti-condensation effect.

[0070] Optionally, the dehumidifier plate 8 can be a condensation barrier, for example, a DFC condensation barrier.

[0071] In some embodiments provided by this utility model, the battery pack further includes protective components 9 corresponding to the battery packs. The protective components 9 include a first protective plate portion 901, a second protective plate portion 902, and a third protective plate portion 903.

[0072] The first protective plate 901 is located on the top of the battery pack, and the second protective plate 902 and the third protective plate 903 are located on both sides of the battery pack, and both the second protective plate 902 and the third protective plate 903 are connected to the first protective plate 901.

[0073] In this embodiment, the first protective plate 901 is disposed above the battery pack, providing buffering and protection for the top of the battery pack. The second protective plate 902 and the third protective plate 903 are disposed on both sides of the battery pack, providing buffering and protection for both sides of the battery pack. Furthermore, both the second protective plate 902 and the third protective plate 903 are connected to the first protective plate 901, forming a cover that covers the top of the battery pack, thus protecting it. For example, in the extreme case where water droplets form on the top of the housing 6, the water droplets will flow down the protective member 9 and will not drip onto the busbar 2 or the terminal post 101.

[0074] Optionally, the second protective plate 902 or the third protective plate 903 is disposed between the battery packs to prevent collisions between the battery packs. Alternatively, the second protective plate 902 or the third protective plate 903 is disposed between the battery pack and the housing 6 to prevent collisions between the battery pack and the housing 6.

[0075] Optionally, the first protective plate portion 901 is connected to the cover body; for example, the first protective plate portion 901 can be bonded to the cover body. This arrangement can prevent the protective component 9 from shifting and improve the stability of the protective component 9.

[0076] Optionally, the dehumidifying plate 8 is connected to the side of the first protective plate portion 901 facing the battery pack, for example, the dehumidifying plate 8 is bonded to the first protective plate portion 901. This arrangement can prevent the dehumidifying plate 8 from shifting and improve the stability of the dehumidifying plate 8.

[0077] Optionally, the protective component 9 can be made of thermal insulation material, such as, but not limited to, aerogel, vacuum insulation board, expanded perlite and polyurethane foam.

[0078] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery pack, characterized in that, include: Battery (1), wherein the number of batteries (1) is set to at least two; Busbar (2), the busbar (2) connects the terminals (101) of the two batteries (1) and electrically connects the two batteries (1); The heat insulation component (3) is attached to the surface of the busbar (2) away from the battery (1) and connected to the busbar (2).

2. The battery pack according to claim 1, characterized in that, The busbar (2) located between the two poles (101) is provided with a curved protrusion (201), which protrudes toward or away from the insulation member (3).

3. The battery pack according to claim 2, characterized in that, The curved protrusion (201) protrudes away from the insulation member (3), and the insulation member (3) is provided with a rib (301) at the position corresponding to the curved protrusion (201). The rib (301) is located in the recess on the back of the curved protrusion (201). Alternatively, the curved protrusion (201) protrudes towards the heat insulation member (3), and the heat insulation member (3) is provided with a receiving groove at the position corresponding to the curved protrusion (201), and the curved protrusion (201) is located in the receiving groove.

4. The battery pack according to any one of claims 1-3, characterized in that, The battery pack also includes a support plate (4), which is connected to the top of the battery (1). The support plate (4) has a groove (401) with the opening of the groove (401) facing away from the battery (1). The bottom of the groove (401) has an opening for the terminal post (101) to pass through. The busbar (2) is located in the groove (401), and the groove (401) is used to limit the busbar (2).

5. The battery pack according to claim 4, characterized in that, The opening includes two through holes (402) arranged at intervals, and the two through holes (402) correspond one-to-one with the two pole posts (101); The battery pack also includes a positioning element (5), which is connected to the bottom of the groove (401) and located between the two through holes (402). The busbar (2) is provided with a first positioning hole through which the positioning element (5) passes.

6. The battery pack according to claim 5, characterized in that, The insulation component (3) is provided with a second positioning hole (302) through which the positioning component (5) passes.

7. The battery pack according to any one of claims 1-3, characterized in that, The insulation component (3) is bonded, snapped, riveted or screwed to the busbar (2).

8. A battery pack, characterized in that, The device includes a housing (6), a cover plate (7), and a battery pack as described in any one of claims 1-7, wherein the housing (6) has an opening through which the battery pack passes, the battery pack is disposed inside the housing (6), and the cover plate (7) covers the opening.

9. The battery pack according to claim 8, characterized in that, The battery pack also includes a dehumidifying plate (8), which is disposed above the battery (1).

10. The battery pack according to claim 8 or 9, characterized in that, The battery pack also includes protective components (9) corresponding to the battery pack, and the protective components (9) include a first protective plate (901), a second protective plate (902) and a third protective plate (903). The first protective plate (901) is located on the top of the battery pack, the second protective plate (902) and the third protective plate (903) are respectively located on both sides of the battery pack, and the second protective plate (902) and the third protective plate (903) are both connected to the first protective plate (901).

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