Patent Description:
In the related art, in order to increase the battery capacity, multiple electrode cores are connected in series in the housing of the battery, so the connection parts between the electrode cores are prone to be twisted and broken during the use of the battery. In addition, under vibration and bumpy conditions, the multiple electrode cores are prone to move in the housing, and generate relative displacement therebetween, which will damage the electrode cores. For example, a current collector is damaged, a separator is wrinkled, and an active material layer on the electrode peels off, which will lead to poor stability of the battery, causing safety problems. <CIT> discloses a battery comprising adjacent electrode core sets, the gap between which being filled with a packaging portion. <CIT> discloses a different battery type also comprising an insulating spacer connected to the case via a protrusion-hole connection. <CIT> discloses yet another battery of a different type also comprising an insulating spacer connected to the case via a groove-protrusion connection. <CIT> discloses the use of a metal member in such an insulating spacer to fix the same to the housing, especially by welding. Finally, <CIT> discloses yet another different battery type wherein an insulating spacer is fixed to the battery case by an adhesive or glue.

The present invention according to the independent claims is to resolve at least one of the technical problems in the prior art. Therefore, the present invention provides a battery according to claim <NUM> in which electrode core sets are connected more reliably.

Provided is a battery, including a housing and multiple electrode core sets encapsulated in the housing. Every two adjacent electrode core sets are connected in series. The electrode core set includes an encapsulation film and at least one electrode core, and the electrode core is arranged in an accommodating cavity formed by the encapsulation film. The electrode core set includes a first electrode and a second electrode for leading out current. The first electrode and the second electrode protrude out of the encapsulation film. The first electrode of one of the two adjacent electrode core sets is electrically connected to the second electrode of the other electrode core set. A gap between the two adjacent electrode core sets is filled with an insulating material so as to form an insulating spacer between the two adjacent electrode core sets. A connection part of the two adjacent electrode core sets is arranged in the insulating spacer.

The insulating spacer is arranged between every two adjacent electrode core sets, and the connection part of the two electrode core sets is arranged in the insulating spacer. In this way, the insulating spacer can be well utilized to fix the electrode core sets, so as to prevent the relative movement between the electrode core sets, maintain the reliable connection between the electrode core sets and increase the strength of the connection part, thereby preventing the connection part between the two adjacent electrode core sets from being twisted or broken during the use of the battery, and improving the connection stability between the electrode core sets.

Provided is a battery pack, including the above-mentioned battery.

Provided is an automobile, including the above-mentioned battery pack.

Additional aspects and advantages of the present invention will be given in the following description, some of which will become apparent from the following description or may be learned from practices of the present invention.

The foregoing and/or additional aspects and advantages of the present invention will become apparent and comprehensible in the embodiment description made with reference to the following accompanying leading outs, where:.

Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in accompanying leading outs, where the same or similar elements or the elements having same or similar functions are denoted by the same or similar reference numerals throughout the description. The embodiments described below with reference to the accompanying leading outs are exemplary, and are intended to explain the present invention and cannot be construed as a limitation to the present invention.

In the description of the present invention, it should be understood that orientation or position relationships indicated by the terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on orientation or position relationships shown in the accompanying leading outs, and are used only for ease and brevity of illustration and description of the present invention, rather than indicating or implying that the mentioned apparatus or component must have a particular orientation or must be constructed and operated in a particular orientation. Therefore, such terms should not be construed as limiting of the present invention.

It should be noted that, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defining "first" and "second" may explicitly or implicitly include one or more such features. Further, in the description of the present invention, unless otherwise stated, "multiple" means two or more than two.

Provided is a battery <NUM>, including a housing <NUM> and multiple electrode core sets <NUM> encapsulated in the housing <NUM>. Every two adjacent electrode core sets <NUM> are connected in series. The electrode core set <NUM> includes an encapsulation film <NUM> and at least one electrode core <NUM>, and the electrode core <NUM> is arranged in an accommodating cavity formed by the encapsulation film <NUM>. The electrode core set <NUM> includes a first electrode <NUM> and a second electrode <NUM> for leading out current. The first electrode <NUM> and the second electrode <NUM> protrude out of the encapsulation film <NUM>. The first electrode <NUM> of one of the two adjacent electrode core sets <NUM> is electrically connected to the second electrode <NUM> of the other electrode core set. A gap between the two adjacent electrode core sets <NUM> is filled with an insulating material so as to form an insulating spacer <NUM> between the two adjacent electrode core sets <NUM>. A connection part of the two adjacent electrode core sets <NUM> is arranged in the insulating spacer <NUM>.

The beneficial effects of such a battery are as follows:.

In such a battery, the insulating spacer <NUM> is arranged between every two adjacent electrode core sets <NUM>, and the connection part of the two electrode core sets <NUM> is arranged in the insulating spacer <NUM>. In this way, the insulating spacer <NUM> can be well utilized to fix the electrode core sets <NUM>, so as to prevent the relative movement between the electrode core sets <NUM>, maintain the reliable connection between the electrode core sets <NUM> and increase the strength of the connection part, thereby preventing the connection part between the two adjacent electrode core sets <NUM> from being twisted or broken during the use of the battery <NUM>, and improving the connection stability between the electrode core sets <NUM>.

Referring to <FIG>, a battery <NUM> includes a housing <NUM> and multiple electrode core sets <NUM> encapsulated in the housing <NUM>, and every two adjacent electrode core sets <NUM> are connected in series. Referring to <FIG>, the electrode core set <NUM> includes an encapsulation film <NUM> and at least one electrode core <NUM>, and the electrode core <NUM> is arranged in an accommodating cavity formed by the encapsulation film <NUM>. In some examples of the present invention, the encapsulation film <NUM> is an aluminum-plastic composite film or a polymer material composite film. The electrode core set <NUM> includes a first electrode <NUM> and a second electrode <NUM> for leading out current. One of the first electrode <NUM> and the second electrode <NUM> is a positive electrode, and the other is a negative electrode. The first electrode <NUM> and the second electrode <NUM> protrude out of the encapsulation film <NUM>. The first electrode <NUM> of one of the two adjacent electrode core sets <NUM> is electrically connected to the second electrode <NUM> of the other electrode core set. A gap between the two adjacent electrode core sets <NUM> is filled with an insulating material so as to form an insulating spacer <NUM> between the two adjacent electrode core sets <NUM>. A connection part of the two adjacent electrode core sets <NUM> is arranged in the insulating spacer <NUM>.

In some examples of the present invention, a length of the battery <NUM> extends along a first direction L, a thickness of the electrode core set <NUM> extends along a second direction W. The second direction W and the first direction L are perpendicular to each other. A length of the electrode core set <NUM> extends along the first direction L, and the multiple electrode core sets <NUM> are arranged along the first direction L. In addition, the first electrode <NUM> and the second electrode <NUM> of the electrode core set <NUM> are arranged at two opposite ends of the electrode core set <NUM> along the first direction L. Besides, the two electrode core sets <NUM> that are connected in series are two electrode core sets <NUM> that are adjacent to each other, that is, in the embodiments of the present invention, every two adjacent electrode core sets <NUM> are connected in series. Therefore, the multiple electrode core sets <NUM> are arranged in an end-to-end manner. In this manner, it is easy to realize series connection between every two adjacent electrode core sets <NUM>, and the connecting structure is simple. In addition, in this manner, it is easy to manufacture the battery <NUM> with a larger length. Thereby, when the battery <NUM> is to be mounted into a shell of the battery pack <NUM>, there is no need to provide support structures such as cross beams and longitudinal beams. Instead, by using the housing <NUM> of the battery <NUM> as the support, the battery <NUM> is directly mounted on the shell of the battery pack <NUM>, which thereby can save the internal space of the battery pack <NUM>, improve the volume utilization of the battery pack <NUM>, increase the energy density of the battery pack <NUM> and reduce the weight of the battery pack <NUM>.

In some examples of the present invention, the multiple electrode core sets <NUM> may form two electrode core strings. That is, the battery <NUM> may contain two electrode core strings, which may be connected in series. For example, the two electrode core strings may be connected in a U shape, that is, the corresponding electrodes of the two electrode core strings at the same end in a first direction L are connected in series, and the corresponding electrodes of the two electrode core strings at the other end in the first direction L are respectively positive and negative electrodes of the battery.

Each electrode core string has multiple electrode core sets <NUM>, the two electrode core strings are arranged along a second direction W, and the multiple electrode core sets <NUM> in each electrode core string are arranged along the first direction L. In addition, the first electrode <NUM> and the second electrode <NUM> of the electrode core set <NUM> are arranged at two opposite ends of the electrode core set <NUM> along the first direction L, and the two electrode core sets <NUM> that are connected in series are two electrode core sets <NUM> that are adjacent to each other. That is, in the embodiments of the present invention, for the multiple electrode core sets <NUM> in each electrode core string, every two adjacent electrode core sets <NUM> are connected in series. Therefore, the multiple electrode core sets <NUM> in each electrode core string are arranged in an end-to-end manner. In this manner, it is easy to realize series connection between every two adjacent electrode core sets <NUM>, and the connecting structure is simple.

Of course, in other embodiments, the battery <NUM> may be provided with only one electrode core string. That is, all the electrode core sets <NUM> in the battery <NUM> are sequentially arranged along the first direction L, and all the electrode core sets <NUM> are connected in series to form one electrode core string.

When the multiple electrode core sets <NUM> are connected in series, the connection parts between the electrode core sets <NUM> become the vulnerable parts of the whole battery <NUM>, and are prone to be twisted and broken during the use of the battery <NUM>, resulting in connection failure. Moreover, the multiple electrode core sets <NUM> are connected in series in the battery <NUM>, which increases the risk of the battery moving in the first direction L. Therefore, in the present invention, the insulating spacer <NUM> formed by filling the gap between two adjacent electrode core sets <NUM> with the insulating material is arranged between the two electrode core sets <NUM> connected in series. The insulating spacer <NUM> can adhere to the two adjacent electrode core sets <NUM>, so that the connection between the insulating spacer <NUM> and the two electrode core sets <NUM> adjacent thereto is more stable and reliable. Moreover, the connection part of the two electrode core sets <NUM> connected in series is arranged in the insulating spacer <NUM>, which can increase the strength of the connection part between the first electrode <NUM> and the second electrode <NUM>. Thereby, the insulating spacer <NUM> can be utilized to better fix the electrode core sets <NUM>, so as to prevent the relative movement between the electrode core sets <NUM>, maintain the effective connection between the electrode core sets <NUM> and increase the strength of the connection part, thereby preventing the connection part between the electrode core sets <NUM> from being twisted or broken during the use of the battery, and improving the connection stability between the electrode core sets <NUM>.

In some embodiments of the present invention, the two electrode core sets <NUM> that are connected in series are two electrode core sets <NUM> that are adjacent to each other, and the insulating spacer <NUM> is arranged between the two adjacent electrode core sets <NUM>.

Thereby, the insulating spacer <NUM> is arranged between every two adjacent electrode core sets <NUM>. The insulating spacer <NUM> can separate two adjacent electrode core sets <NUM>, and the insulating spacer <NUM> and the housing <NUM> are positioned relative to each other, which can further prevent the electrode core sets <NUM> from moving along its first direction L.

In some embodiments of the present invention, when the battery <NUM> contains two electrode core strings, on each side of the insulating spacer <NUM> along the first direction L, two electrode core sets <NUM> are arranged, so that the number of the electrode core sets <NUM> can be increased, thereby increasing the electric capacity of the battery <NUM>.

In some other embodiments of the present invention, only one electrode core set <NUM> is arranged in the second direction W, and the multiple electrode core sets <NUM> all extend along the first direction L. That is, on each side of the insulating spacer <NUM> along the first direction L, only one electrode core set <NUM> is arranged. This situation may be understood as only one electrode core string being arranged in the battery <NUM>.

In one embodiment of the present invention, the housing <NUM> is a metal housing, for example, an aluminum housing. Of course, other metals may also be selected as required. Thereby, the housing <NUM> has sufficient strength to avoid being damaged or deformed, thereby improving the safety of the battery <NUM>.

In some examples of the present invention, the encapsulation film <NUM> is an aluminum-plastic composite film or a polymer material composite film. The first electrode <NUM> and the second electrode <NUM> of the electrode core set <NUM> protrude out of the encapsulation film <NUM>. That is, in the embodiments of the present invention, the insulating spacer <NUM> is an insulating spacer <NUM> arranged outside the encapsulation film <NUM>. The connection reliability between the electrode core sets <NUM> is improved by arranging the insulating spacer <NUM> outside the encapsulation film.

In some embodiments of the present invention, the electrode core mentioned may also be understood as an electrode core commonly used in the field of power batteries, and the electrode core and the electrode core set <NUM> are components inside the housing <NUM> of the battery <NUM> and cannot be understood as the battery itself. The electrode core may be an electrode core formed by winding, and the electrode core generally refers to a component that is not completely sealed. Thus, the battery <NUM> mentioned in the present invention cannot be simply understood as a battery module or a battery pack for inclusion of multiple electrode cores. In the present invention, the electrode core set <NUM> may be composed of one single electrode core. The electrode core set may also include multiple electrode cores, and the multiple electrode cores are connected in parallel to form the electrode core set <NUM>.

Referring to <FIG> together, in a non-claimed example, the spacer <NUM> includes an outer peripheral surface <NUM> facing an inner surface of the housing <NUM>, and at least one first positioning portion <NUM> is formed on the outer peripheral surface <NUM> of the spacer <NUM>. Second positioning portions <NUM> corresponding to the first positioning portions <NUM> one by one are formed on the inner surface <NUM> of the housing <NUM>. The first positioning portion <NUM> is mated with the corresponding second positioning portion <NUM> so as to fix the spacer <NUM> to the housing <NUM>.

Thereby, the first positioning portion <NUM> of the spacer <NUM> and the second positioning portion <NUM> on the housing <NUM> are mated with each other to fix the spacer <NUM> to the housing <NUM>, which can further prevent the relative movement between the electrode core sets <NUM>, thereby improving the effect of preventing movement.

In a non-claimed example, referring to <FIG>, the first positioning portion <NUM> is a groove formed by recessing the outer peripheral surface <NUM> of the insulating spacer <NUM> to the inside of the insulating spacer <NUM>. The second positioning portion <NUM> is a protrusion formed on the inner surface <NUM> of the housing <NUM>, and the protrusion is embedded into the groove so as to fix the insulating spacer <NUM> to the housing <NUM>.

Thereby, by directly forming the groove on the insulating spacer <NUM> and directly forming the protrusion on the housing <NUM> and through the mating between the protrusion on the housing <NUM> and the groove on the insulating spacer <NUM>, the insulating spacer <NUM> and the housing <NUM> are fixed and positioned relative to each other, which can further prevent the electrode core sets <NUM> from moving and also save the space occupied by the battery <NUM>.

As shown in <FIG>, the insulating spacer <NUM> may be connected to a surface of the housing <NUM> with the largest area (which may also be referred to as "large surface"). Specifically, a thickness of the battery <NUM> extends along a second direction W. The second direction W is perpendicular to the first direction L. The housing <NUM> of each battery <NUM> includes a first side surface <NUM> and a second side surface <NUM> on two opposite sides of the second direction W, and the first side surface <NUM> and the second side surface <NUM> are the largest surfaces of the battery <NUM>. The first side surface <NUM> and the second side surface <NUM> of the housing <NUM> are respectively provided with the second positioning portion <NUM>. An inner circumferential surface of the insulating spacer <NUM> corresponding to the first side surface <NUM> and the second side surface <NUM> is provided with the first positioning portion <NUM>. The first positioning portion <NUM> and the second positioning portion <NUM> are in one-to-one correspondence so as to be mated, so that the insulating spacer <NUM> is fixed to the housing <NUM>.

In another non-claimed example, referring to <FIG>, the first positioning portion <NUM> may also be a protrusion formed on the outer peripheral surface <NUM> of the insulating spacer <NUM>, the second positioning portion <NUM> may be a groove formed on the inner surface <NUM> of the housing <NUM>, and the protrusion is embedded into the groove so as to fix the insulating spacer <NUM> to the housing <NUM>.

Thereby, by directly forming the protrusion on the insulating spacer <NUM> and directly forming the groove on the inner surface <NUM> of the housing <NUM> and through the mating between the groove on the housing <NUM> and the protrusion on the insulating spacer <NUM>, the insulating spacer <NUM> and the housing <NUM> are fixed and positioned relative to each other, which can further prevent the electrode core sets <NUM> from moving and also save the space occupied by the battery <NUM>.

In still another non-claimed example, referring to <FIG>, the second positioning portion <NUM> on the first side surface <NUM> is a protrusion formed on the inner surface <NUM> of the housing <NUM>, the first positioning portion <NUM> is a groove formed on the outer peripheral surface <NUM> of the insulating spacer <NUM> corresponding to the protrusion, and the protrusion is mated with the groove. The second positioning portion <NUM> on the second side surface <NUM> is a groove formed on the inner surface <NUM> of the housing <NUM>, the first positioning portion <NUM> is a protrusion formed on the outer peripheral surface <NUM> of the insulating spacer <NUM> corresponding to the groove, and the protrusion is mated with the groove.

Thereby, on the housing <NUM> of the battery <NUM>, the second positioning portion <NUM> on the first side surface <NUM> is the protrusion, and the corresponding first positioning portion <NUM> is the groove. The second positioning portion <NUM> on the second side surface <NUM> is the groove, and the corresponding first positioning portion <NUM> is the protrusion. The protrusion is mated with the groove, so that the insulating spacer <NUM> and the housing <NUM> are fixed and positioned relative to each other, and the housing <NUM> and the housing <NUM> are also fixed and positioned relative to each other, which can further prevent the electrode core sets <NUM> from moving and also prevent the relative movement between the housings <NUM> of adjacent batteries <NUM>.

Referring to <FIG>, in a non-claimed example, the insulating spacer <NUM> includes an outer peripheral surface <NUM> facing an inner surface of the housing <NUM>. The housing <NUM> includes the inner surface <NUM> facing the insulating spacer <NUM>. A first adhesive layer <NUM> is arranged between the outer peripheral surface <NUM> of the insulating spacer <NUM> and the inner surface of the housing <NUM> so as to fix the insulating spacer <NUM> to the housing <NUM>.

Thereby, by arranging the first adhesive layer <NUM> between the outer peripheral surface <NUM> of the insulating spacer <NUM> and the inner surface of the housing <NUM>, the insulating spacer <NUM> is fixed to the housing <NUM>, which can further prevent the relative movement between the electrode core sets <NUM>, thereby improving the effect of preventing movement.

In another non-claimed example, the first adhesive layer <NUM> is a heat-sensitive adhesive. After the electrode core set <NUM> is mounted into the housing <NUM>, the first adhesive layer <NUM> is heated by a preset temperature to become sticky, so as to fix the insulating spacer <NUM> to the housing <NUM>. It should be noted that the first adhesive layer <NUM> is not sticky before the electrode core set <NUM> is mounted into the housing <NUM>. After the electrode core set <NUM> is mounted into the housing <NUM>, the first adhesive layer <NUM> is heated to become sticky, so that the insulating spacer <NUM> is fixed to the housing <NUM>. In this way, the insulating spacer <NUM> can be fixed to the housing <NUM>, and the mounting is convenient.

In some other non-claimed examples, the first adhesive layer <NUM> is a pressure-sensitive adhesive. The first adhesive layer <NUM> is not sticky before the electrode core set <NUM> is mounted into the housing <NUM>. After the electrode core set <NUM> is mounted into the housing <NUM>, the first adhesive layer <NUM> is compressed by a preset pressure to become sticky, so that the insulating spacer <NUM> is fixed to the housing <NUM>. In this way, the insulating spacer <NUM> can be fixed to the housing <NUM>, and the mounting is convenient.

Of course, in other non-claimed examples, the first adhesive layer <NUM> may also be another type of adhesive, such as a double-faced adhesive tape, which is not limited here.

It can be understood that the first adhesive layer <NUM> may be arranged on all of the outer peripheral surface <NUM> of the insulating spacer <NUM>, or on part of the outer peripheral surface <NUM> of the insulating spacer <NUM>, which is not limited here.

In some non-claimed examples, a second adhesive layer <NUM> is arranged between an outer surface of the electrode core set <NUM> and the inner surface <NUM> of the housing <NUM> so as to fix the electrode core set <NUM> to the housing <NUM>.

Thereby, the electrode core set <NUM> is fixed to the housing <NUM> through the second adhesive layer <NUM>, so that the electrode core set <NUM> is fixed more stably, which can further avoid the relative movement between the electrode core sets <NUM>.

In some non-claimed examples, the second adhesive layer <NUM> is a heat-sensitive adhesive or a pressure-sensitive adhesive.

In some non-claimed examples, the second adhesive layer <NUM> is a heat-sensitive adhesive. After the electrode core set <NUM> is mounted into the housing <NUM>, the second adhesive layer <NUM> is heated by a preset temperature to become sticky, so as to fix the electrode core set <NUM> to the housing <NUM>. It should be noted that the second adhesive layer <NUM> is not sticky before the electrode core set <NUM> is mounted into the housing <NUM>. After the electrode core set <NUM> is mounted into the housing <NUM>, the second adhesive layer <NUM> is heated to become sticky, so that the electrode core set <NUM> is fixed to the housing <NUM>. In this way, the electrode core set <NUM> can be fixed to the housing <NUM>, and the mounting is convenient.

In some other non-claimed examples, the second adhesive layer <NUM> is a pressure-sensitive adhesive. The second adhesive layer <NUM> is not sticky before the electrode core set <NUM> is mounted into the housing <NUM>. After the electrode core set <NUM> is mounted into the housing <NUM>, the second adhesive layer <NUM> is compressed by a preset pressure to become sticky, so that the electrode core set <NUM> is fixed to the housing <NUM>. In this way, the electrode core set <NUM> can be fixed to the housing <NUM>, and the mounting is convenient.

Of course, in other non-claimed examples, the second adhesive layer <NUM> may also be another type of adhesive, such as a double-faced adhesive tape, which is not limited here.

It can be understood that in one of the non-claimed examples, the second adhesive layer <NUM> is arranged on a large surface among the outer surfaces of the encapsulation film <NUM> of the electrode core set <NUM>. The large surface refers to one or two outer surfaces among the outer surfaces of the encapsulation film <NUM> of the electrode core set <NUM> with larger area. In other non-claimed examples, the second adhesive layer <NUM> may be arranged on any one of the outer surfaces of the encapsulation film <NUM> of the electrode core set <NUM>, which is not limited here.

According to the present invention, referring to <FIG>, the housing <NUM> is a metal housing. The insulating spacer <NUM> includes an outer peripheral surface <NUM> facing an inner surface <NUM> of the housing <NUM>. The outer peripheral surface <NUM> of the insulating spacer <NUM> is provided with a metal member <NUM>. The metal member <NUM> is connected to the housing <NUM> so as to fix the insulating spacer <NUM> to the housing <NUM>.

Thereby, in the present invention, the insulating spacer <NUM> includes the outer peripheral surface <NUM> facing the inner surface <NUM> of the housing <NUM>. The outer peripheral surface <NUM> of the insulating spacer <NUM> is provided with the metal member <NUM>. The metal member <NUM> is connected to the housing <NUM> so as to fix the insulating spacer <NUM> to the housing <NUM>, which can further prevent the relative movement between the electrode core sets <NUM>, thereby improving the effect of preventing movement.

According to the present invention, referring to <FIG>, in order to fix the metal member <NUM> to the insulating spacer <NUM>, the outer peripheral surface <NUM> of the insulating spacer <NUM> is provided with a snap-fit groove <NUM>. The metal member <NUM> includes a mating portion <NUM> and a connecting portion <NUM> connected to the mating portion <NUM>. The mating portion <NUM> is snapped into the snap-fit groove <NUM>. The connecting portion <NUM> is exposed on the outer peripheral surface <NUM> so as to be connected to the housing <NUM>.

Thereby, with the snap fit between the snap-fit groove <NUM> and the mating portion <NUM>, the connection stability between the insulating spacer <NUM> and the metal member <NUM> is improved.

In some embodiments of the present invention, the mating portion <NUM> is multiple mating pieces <NUM> vertically protruding from a periphery of the connecting portion <NUM>, and there is a clearance between the mating pieces <NUM>. For example, in this embodiment, there are <NUM> mating pieces <NUM>, and there is a clearance between every two mating pieces <NUM>. Similarly, a clamping slot <NUM> corresponding to each of the mating pieces <NUM> is arranged inside the snap-fit groove <NUM>. For example, in this embodiment, <NUM> clamping slots <NUM> may be arranged inside the snap-fit groove <NUM>, and the six clamping slots <NUM> are attached to side walls of the snap-fit groove <NUM>. Each mating piece <NUM> is correspondingly inserted into one clamping slot <NUM>.

Thereby, the mating pieces <NUM> make the mating portion <NUM> have good interchangeability, and thus can be mated with the corresponding clamping slots <NUM> more easily.

In some embodiments of the present invention, the metal member <NUM> is of a groove structure, and a shape of the snap-fit groove <NUM> is matched with that of an opening of the groove structure. A side wall of the groove structure is snapped into the snap-fit groove <NUM> as the mating portion <NUM>, and a bottom wall of the groove of the groove structure is connected to the housing <NUM> as the connecting portion <NUM>.

Thereby, the metal member <NUM> occupies less space, which makes the overall structure of the battery <NUM> more compact.

In some embodiments of the present invention, the snap-fit groove <NUM> and the mating portion <NUM> form an interference fit so as to be fixed to each other.

In a non-claimed example, the metal member <NUM> is integrally formed with the insulating spacer <NUM> by insert molding, and the metal member is made of an aluminum material.

Thereby, the process of mounting the metal member <NUM> is avoided, and the connection stability between the metal member <NUM> and the insulating spacer <NUM> is improved.

In a non-claimed example, the metal member <NUM> is fixed to the housing <NUM> by welding, for example, laser welding. As shown in <FIG>, a laser welding joint <NUM> is formed between the metal member <NUM> and the housing <NUM>.

Thereby, the connection stability between the metal member <NUM> and the housing <NUM> is improved, which can prevent the relative movement between the electrode core sets <NUM> along the first direction L, maintain the effective connection between the electrode core sets <NUM> and increase the mechanical strength of the battery <NUM>, thereby preventing the battery <NUM> from being twisted or broken during the use.

Referring to <FIG>, when the battery <NUM> contains two electrode core strings, i.e., when on each side of the insulating spacer <NUM> along the first direction L, two electrode core sets <NUM> are arranged, the insulating spacer <NUM> includes a first insulating part <NUM>, a second insulating part <NUM> and a third insulating part <NUM> that are arranged sequentially along the second direction W. The second insulating part <NUM> is arranged between the first insulating part <NUM> and the third insulating part <NUM>. Outer sides of the first insulating part <NUM> and the third insulating part <NUM> are respectively provided with the snap-fit groove <NUM>. A through hole <NUM> is formed between the first insulating part <NUM> and the second insulating part <NUM> for allowing the connection part of one of the electrode core strings to pass through. Another through hole (not shown) is formed between the second insulating part <NUM> and the third insulating part <NUM> for allowing the connection part of the other electrode core string to pass through.

In some embodiments of the present invention, the battery <NUM> is substantially a cuboid. The battery <NUM> has a length L, a thickness W and a height H. The length L is greater than the height H. The height H is greater than the thickness W. The length of the battery <NUM> is <NUM>-<NUM>. A ratio of the length to the height of the battery <NUM> is <NUM>-<NUM>.

It should be noted that "the battery <NUM> is substantially a cuboid" can be understood as "the battery <NUM> may be a cuboid or cube, or roughly a cuboid or cube but irregularly shaped in part, or approximately a cuboid or cube that has notches, protrusions, chamfers, arcs and bends in part.

The present invention further provides a battery pack, including multiple batteries <NUM> provided by the present invention or multiple battery modules provided by the present invention. Referring to <FIG>, the battery pack <NUM> provided by the present invention includes a tray <NUM> and the batteries <NUM> arranged on the tray <NUM>.

The present invention provides an automobile <NUM>, including: a battery pack <NUM> provided by the present invention.

Claim 1:
A battery (<NUM>), comprising a housing (<NUM>) and a plurality of electrode core sets (<NUM>) encapsulated in the housing, wherein every two adjacent electrode core sets (<NUM>) are connected in series, the electrode core set comprises an encapsulation film (<NUM>) and at least one electrode core (<NUM>), and the electrode core (<NUM>) is arranged in an accommodating cavity formed by the encapsulation film; and
the electrode core set (<NUM>) comprises a first electrode (<NUM>) and a second electrode (<NUM>) for leading out current, the first electrode and the second electrode protrude out of the encapsulation film (<NUM>), the first electrode (<NUM>) of one of the two electrode core sets (<NUM>) is connected to the second electrode (<NUM>) of the other electrode core set, a gap between the two adjacent electrode core sets (<NUM>) is filled with an insulating material so as to form an insulating spacer (<NUM>) between the two adjacent electrode core sets, and a connection part of the two adjacent electrode core sets is arranged in the insulating spacer (<NUM>);
wherein the insulating spacer (<NUM>) comprises an outer peripheral surface (<NUM>) facing an inner surface (<NUM>) of the housing (<NUM>), the outer peripheral surface of the insulating spacer (<NUM>) is provided with a metal member (<NUM>), and the metal member is connected to the housing (<NUM>) so as to fix the insulating spacer to the housing; and
wherein the outer peripheral surface (<NUM>) of the insulating spacer (<NUM>) is provided with a snap-fit groove (<NUM>), the metal member (<NUM>) comprises a mating portion (<NUM>) and a connecting portion (<NUM>) connected to the mating portion (<NUM>), the mating portion is snapped into the snap-fit groove (<NUM>), and the connecting portion (<NUM>) is exposed on the outer peripheral surface (<NUM>) so as to be connected to the housing (<NUM>).